JP2006270704A - Video audio output apparatus and function restriction releasing method of the apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for providing digital television receivers to users at a relatively reasonable price in an initial step of sale while limiting a part of various functions and later releasing the limitation of the functions equivalent to the amount of payment, and to provide a concrete method for providing advertisement to the users with respect to the release of limitation. <P>SOLUTION: Information about a usable tuner is read and recognized from an operation control code memory (PROM) 118 for holding function limiting data for limiting the function of a corresponding function section in the digital television receiver 100 so that the data can be changed. The output of one tuner section selected from among a plurality of tuners (101, 102 and 103) of a tuner block 104 which are permitted to function is demodulated on the basis of this recognition, thereby obtaining video data and audio data for generating video audio outputs. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to, for example, a video / audio output device such as a digital television receiver, and a function that is initially restricted in such a video / audio output device. Relates to the method of canceling.

In recent years, for example, consumer electronic devices such as television receivers have become extremely sophisticated. For this reason, there is a concern that a beginner who is unfamiliar with handling may perform an erroneous operation, and countermeasures have been proposed.
For example, in order to provide an electronic device that can be used in accordance with the level of user operation knowledge and operation capability, a plurality of functions are grouped with respect to the electronic device, and each group and / or individual function is grouped. There is a proposal to attach a key and compare data supplied from the outside with the key so that the function corresponding to the key can be activated when the key and the data match.
That is, first, a key is attached to each of a plurality of functions of the electronic device or to each group when the plurality of functions are grouped. Then, the data supplied from the outside is compared with this key. Only when the key and the data match, the function corresponding to the key can be activated.

  General users can use electronic devices at a level that suits their own operational knowledge and ability, and can use other functions when the user's own operational knowledge and ability improve. Has the effect of preventing mistakes in operation. Furthermore, since the attached user's manual may be the minimum necessary, it can be made thin and simple, it is easy for general users to accept, and the user's manual can be expected to be used effectively. (See Patent Document 1).

  On the other hand, a function restricting means for restricting at least a part of functions of an image pickup apparatus such as a digital camera capable of taking a still image and / or a moving image by the image pickup device, and restriction of functions restricted by the function restricting means. A restriction canceling means for canceling the restriction, holding the key data used for releasing the restriction in the restriction canceling means, and comparing the externally input data with the key data by an external means. A technique has been proposed in which restriction of a restricted function is released when the data input from the key matches the key data.

In this proposal, there are further provided an advertisement display control means for displaying an advertisement on the display means, a step of releasing the function restriction in the imaging device, and a step of charging along with the release of the function restriction. Setting is disclosed.
As a specific example, first, a camera producer delivers a price to a camera seller. The camera seller registers advertisement data and a function restriction code for a camera in a factory-shipped state. The user purchases a camera at a price B from a camera seller. In this case, if A> B, the camera seller pays the price for AB at this point.

The camera seller receives the advertising price E from the advertiser of the advertising data registered above, and compensates for the price burden. Camera sellers can pass and cancel the price burden by earning profits higher than the price burden A-B through advertising revenue, and the camera seller can lower the camera sales price. Can purchase a high-performance camera (see Patent Document 2).
JP 05-183828 A (paragraphs 0006 to 0009, FIG. 2) JP 2003-274276 A (paragraphs 0005 to 0007, paragraphs 0112 to 0115, FIGS. 5 and 8)

  With the technique proposed in Patent Document 1 described above, there is a risk of erroneous operation by making it possible to gradually release restrictions on advanced or various functions that were initially restricted according to the proficiency level of the user of the electronic device. If there is no idea to deal with the complexities related to the operation of releasing the function restriction, and the manufacturer or the seller bears the burden, it is commensurate with the increase in the burden. It is impossible to eliminate the concern that the improvement in business performance could not be expected and that it would eventually lead to cost increase.

On the other hand, although the technique proposed in Patent Document 2 discloses a case in which the function restriction and the cancellation thereof are applied to a digital camera, it is applied to other equipment, for example, a video / audio output device such as a digital television receiver. No specific proposals have been made as to what kind of device configuration or method should be constructed.
The present invention has been made in view of the situation described above, and in an audio / video output apparatus such as a digital television receiver, some advanced or various functions are limited at the beginning of sales. In addition to providing the video / audio output device at a relatively low price, the technology for removing the restriction of the function corresponding to the price paid later, and the advertisement to the user in relation to the removal of the restriction of this function It aims at providing the specific technique concerning the technique to show and application of these techniques.

In order to solve the above-described problems, the present application proposes the following techniques.
(1) A set of selectable broadcast channels that are selectable broadcast channels, and may be a plurality of sets in which at least some of the selectable broadcast channels included in each channel are different. A plurality of tuner units provided corresponding to each selected broadcast channel group, and a video for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizes the demodulator that obtains data and audio data, the function-restricted data holding unit that holds the function-restricted data that restricts the functions related to the function unit in a changeable manner, and the function-restricted data held in the function-restricted data holding unit The output of one tuner unit selected from among the tuner units allowed to function among the plurality of tuner units based on the recognized function restriction data is Audio-video output device, characterized in that it comprises a system controller that controls to supply the contrast portion.

 In the video / audio output device according to (1), each of the plurality of tuner units is a set of selectable broadcast channels that are selectable broadcast channels, and the selectable broadcast channels included in each of the tuner channels. It is possible to select a set of selectable broadcast channels corresponding to each of the selectable broadcast channel groups, which are a plurality of sets of at least some of which are different.

The demodulating unit demodulates the output of the selected one of the plurality of tuner units to obtain video data and audio data for generating video / audio output. On the other hand, the video / audio output device is provided with a function restriction data holding unit such as a PROM for holding the function restriction data for restricting the function related to the corresponding function unit in a changeable manner.
One or a plurality of tuners that the system controller recognizes the function restriction data held in the function restriction data holding unit and is allowed to function among a plurality of tuner units depending on the recognized function restriction data. Control is performed so that the output of one tuner selected from the units is supplied to the demodulator. The demodulator demodulates the output of the one tuner unit supplied as described above to generate a video / audio output.

  The remaining tuners except those that are restricted by the function restriction data are allowed to function, and only those broadcast channels that can be selected by these tuners are demodulated as described above. Video and audio output can be generated. When the function restriction data held in a changeable manner as described above is changed, the functionable tuner unit, and thus the broadcast channel in a selectable range is changed corresponding to the change.

(2) A tuner unit for selecting a channel, a demodulating unit for obtaining video data and audio data for demodulating the output of the tuner unit to generate video / audio output, and function restriction data for limiting functions related to the corresponding functional unit A function restriction data holding unit that holds the changeable data, and voice data that is output from the demodulation unit based on the recognized function restriction data by recognizing the function restriction data held in the function restriction data holding unit A system controller that controls a corresponding sound output function unit to output sound in one sound output mode selected from among sound output modes allowed to function among a plurality of sound output modes. A video / audio output device.

In the video / audio output device of (2) above, the demodulator obtains video data and audio data for demodulating the channel selection output from the tuner and generating video / audio output. On the other hand, the video / audio output device is provided with a function restriction data holding unit such as a PROM for holding the function restriction data for restricting the function related to the corresponding function unit in a changeable manner.
The system controller recognizes the function restriction data held in the function restriction data holding unit and relies on the recognized function restriction data to function among a plurality of sound output modes related to the sound data that is output from the demodulation unit. One audio output mode selected from among the audio output modes allowed to be allowed (for example, when the surround mode is subject to function restriction, the standard stereo mode which is not one of these modes) The corresponding voice output function unit is controlled so as to output the voice.

  As described above, it is allowed to function in the remaining audio output modes other than the audio output mode that is restricted from functioning by the function restriction data, and the audio output can be generated in such an allowed mode. it can. Further, when the function restriction data held so as to be changeable is changed, the permissible audio output mode is changed corresponding to the change.

(3) A tuner unit that selects a channel, a demodulator unit that obtains video data and audio data for demodulating the output of the tuner unit to generate video and audio output, and function restriction data that restricts functions related to the corresponding functional unit A function restriction data holding unit that holds the changeable data, and video data that is output from the demodulation unit based on the recognized function restriction data by recognizing the function restriction data held in the function restriction data holding unit The corresponding video display output function unit is controlled to display the video in one video output mode selected from the video output modes allowed to function among a plurality of video output modes having different resolutions. A video / audio output device comprising: a system controller;

In the video / audio output device of (3) above, the demodulator obtains video data and audio data for demodulating the channel selection output from the tuner and generating video / audio output. On the other hand, the video / audio output device is provided with a function restriction data holding unit such as a PROM for holding the function restriction data for restricting the function related to the corresponding function unit in a changeable manner.
A plurality of video output modes in which the system controller recognizes the function restriction data held in the function restriction data holding unit and relies on the recognized function restriction data to vary the resolution of the video data output from the demodulation unit One video output mode selected from among video output modes that are allowed to function (for example, when a video output mode with a resolution of 1080p is subject to function restriction, one video output that is not in this mode) The corresponding video display output function unit is controlled so that the video is displayed in the mode (video output mode of resolution 480p or 720p).

  As described above, it is allowed to function in the remaining video output modes except for the video output mode that is restricted from functioning by the function restriction data, and the video output is generated in such an allowed mode. Can do. When the function restriction data held in a changeable manner as described above is changed, the allowable video output mode is changed in accordance with the change.

(4) A set of selectable broadcast channels, which are selectable broadcast channels, and a plurality of sets different from each other in at least some of the selectable broadcast channels included in each. A plurality of tuner units provided corresponding to each selected broadcast channel group, and a video for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizes the demodulator that obtains data and audio data, the function-restricted data holding unit that holds the function-restricted data that restricts the functions related to the function unit in a changeable manner, and the function-restricted data held in the function-restricted data holding unit The output of one tuner unit selected from among the tuner units allowed to function among the plurality of tuner units based on the recognized function restriction data is Control to be supplied to the control unit, and the audio is output in one audio output mode selected from among the audio output modes allowed to function among a plurality of audio output modes related to the audio data that is the output of the demodulator. Among the video output modes that are allowed to function among a plurality of video output modes that control the corresponding audio output function unit to output and that have different resolutions for the video data that is the output of the demodulator And a system controller that controls a corresponding video display output function unit so as to display and output a video in one video output mode selected from the video and audio output device.

  In the video / audio output device of (4) above, each of the plurality of tuner units is a set of selectable broadcast channels that are selectable broadcast channels, and the selectable broadcast channels included in each of the tuner units. It is possible to select a set of selectable broadcast channels corresponding to each of the selectable broadcast channel groups, which are a plurality of sets of at least some of which are different.

The demodulating unit demodulates the output of the selected one of the plurality of tuner units to obtain video data and audio data for generating video / audio output.
On the other hand, the video / audio output device is provided with a function restriction data holding unit such as a PROM that holds the function restriction data for restricting the function related to the corresponding function unit in a changeable manner.

  Among the tuner units that the system controller recognizes the function restriction data held in the function restriction data holding unit and is allowed to function among the plurality of tuner units depending on the recognized function restriction data. Among the audio output modes that are allowed to function among a plurality of audio output modes related to the audio data that is the output of the demodulator. A function among a plurality of video output modes that controls the corresponding audio output function unit to output audio in one audio output mode selected from the above, and that has different resolutions for the video data that is output from the demodulator Applicable video display to display and output video in one video output mode selected from video output modes allowed to To control the force function unit.

  The remaining functional units other than the functional units that are restricted from functioning by the function restriction data are allowed to function, and the audio / video output may be generated within the range of the functional units that are the target of these functions. it can. When the function restriction data held in a changeable manner as described above is changed, the function unit capable of functioning is changed corresponding to the change.

(5) A set of selectable broadcast channels that are selectable broadcast channels, and a plurality of sets that differ in at least some of the selectable broadcast channels included in each channel. A plurality of tuner units provided corresponding to each selected broadcast channel group, and a video for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizes the demodulator that obtains data and audio data, the function-restricted data holding unit that holds the function-restricted data that restricts the functions related to the function unit in a changeable manner, and the function-restricted data held in the function-restricted data holding unit The output of one tuner unit selected from among the tuner units allowed to function among the plurality of tuner units based on the recognized function restriction data is A system controller for controlling to supply to the control unit, wherein the system controller is provided with release data for releasing a part or all of the functions restricted by the function restriction data, and of the demodulation unit The demodulating enabled to be displayed by the release data when the advertiser provides advertisement display data accompanying the release data for displaying the advertisement video superimposed on the video based on the output video data A video / audio output device for controlling a corresponding video display output function unit to display an advertisement video based on the advertisement video data superimposed on a video based on the output video data of the unit.

  In the video / audio output device of (5) above, each of the plurality of tuner units is a set of selectable broadcast channels that are selectable broadcast channels, and the selectable broadcast channels included in each of the tuner units. It is possible to select a set of selectable broadcast channels corresponding to each of the selectable broadcast channel groups, which are a plurality of sets of at least some of which are different.

The demodulating unit demodulates the output of the selected one of the plurality of tuner units to obtain video data and audio data for generating video / audio output. On the other hand, the video / audio output device is provided with a function restriction data holding unit such as a PROM for holding the function restriction data for restricting the function related to the corresponding function unit in a changeable manner.
One or a plurality of tuners that the system controller recognizes the function restriction data held in the function restriction data holding unit and is allowed to function among a plurality of tuner units depending on the recognized function restriction data. Control is performed so that the output of one tuner selected from the units is supplied to the demodulator.

The demodulator demodulates the output of the one tuner unit supplied as described above to generate a video / audio output.
The system controller is further provided with release data for releasing a part or all of the functions restricted by the function restriction data and superimposes the advertisement video on the video based on the output video data of the demodulation unit. When the advertiser provides the advertisement projection data (data representing the advertisement or data corresponding to the instruction for projecting the advertisement) associated with the release data for the release, the release data can be displayed. The corresponding video display output function unit is controlled so that the advertisement video based on the advertisement video data is projected on the video based on the output video data of the demodulation unit.
The user enjoys an improvement in the specification that the range of selectable functions is expanded by accepting the advertisement display.

  (6) A set of selectable broadcast channels, which are selectable broadcast channels, and a plurality of sets different from at least some of the selectable broadcast channels included in each channel. A plurality of tuner units provided corresponding to each selected broadcast channel group, and a video for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizes the demodulator that obtains data and audio data, the function-restricted data holding unit that holds the function-restricted data that restricts the functions related to the function unit in a changeable manner, and the function-restricted data held in the function-restricted data holding unit The output of one tuner unit selected from among the tuner units allowed to function among the plurality of tuner units based on the recognized function restriction data is A function restriction release method for a video / audio output device including a system controller that controls to supply to the control unit, the video / audio output relating to the function of the video / audio output device that the user desires to release the function restriction The function restriction release data for executing the release of the function restriction by the first computer under the control of the device manufacturer is transferred to the second computer under the control of the distributor of the video / audio output device for a fee. A second sales process and a second supply of the transferred function release data to the user from the second computer under the management of the seller in a form that can be input to the video / audio output device. The function restriction by the system controller based on the function release data acquired by the sales process and the supply in the second sales process Function restriction release method for the audio-video output device which comprises a function restriction release step of releasing.

  In the function restriction release method for the video / audio output device according to (6) above, in the first sales process, the management of the video / audio output device manufacturer regarding the function of the video / audio output device that the user desires to release the function restriction is performed. The function restriction release data for executing the release of the function restriction by the lower first computer is transferred to the second computer under the management of the distributor of the video / audio output device for a fee.

  In other words, in the first sales process, the manufacturer of the video / audio output device sells (wholesales) the function restriction release data desired by the user to the seller. Next, in the second sales process, the function restriction release data transferred to the second computer under the management of the seller as described above is transferred from the second computer under the management of the seller to the user. The video / audio output device is supplied with a chargeable form.

In other words, in the second sales process, the seller sells (retails) the function restriction release data that the user desires to the user.
In the function restriction release process, the function restriction by the system controller of the video / audio output device is released based on the function release data acquired by the supply in the second sales process, and the function related to the release operates effectively. It will be.

  (7) Before the first sales step, the second computer transmits data representing the function of the video / audio output device desired to be released from the function restriction to the first computer through the communication network. The function restriction releasing method for the video / audio output device according to (6), wherein the communication step 1 is executed.

In the function restriction release method for the video / audio output device of (7) above, in particular, in the operation of the function restriction release method for the video / audio output device of (6) above, the manufacturer makes a function related to the user's request to the seller. Prior to the first sales process for selling (wholesaling) the restriction release data, the user wishes to release the function restriction from the second computer of the dealer's jurisdiction to the first computer of the manufacturer's jurisdiction. A first communication step in which data representing the function of the video / audio output device is transmitted through the communication network is executed.
In the first computer of the manufacturer's jurisdiction, the function restriction release data desired by the user to be sold can be quickly and accurately recognized.

  (8) The video / audio output according to (6), wherein the second selling step is a step of transferring the function release data from the second computer to the user by storing it in a memory card. Function restriction release method for the device.

  In the function restriction release method for the video / audio output device of (8) above, in particular, in the operation of the function restriction release method for the video / audio output device of (6), the seller restricts the user to the function restriction according to the user's desire. In the second sales process for selling (retailing) the release data, the function restriction release data is stored in the memory card and transferred. For this reason, even in an environment where facilities such as a separate communication network are not available, it is possible to reliably transfer data to be sold using a memory card which is highly reliable and is widely used.

  (9) A set of selectable broadcast channels, which are selectable broadcast channels, and may be a plurality of sets in which at least some of the selectable broadcast channels included in each channel are different. A plurality of tuner units provided corresponding to each selected broadcast channel group, and a video for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizes the demodulator that obtains data and audio data, the function-restricted data holding unit that holds the function-restricted data that restricts the functions related to the function unit in a changeable manner, and the function-restricted data held in the function-restricted data holding unit The output of one tuner unit selected from among the tuner units allowed to function among the plurality of tuner units based on the recognized function restriction data is A system controller for controlling to supply to the control unit, wherein the system controller is provided with release data for releasing a part or all of the functions restricted by the function restriction data, and of the demodulation unit When the advertisement projection data for displaying the advertisement video superimposed on the video based on the output video data is provided by the advertiser as accompanying the cancellation data, the projection data can be displayed by the cancellation data This is a function restriction release method for a video / audio output device that controls a corresponding video display output function unit to display an advertisement video based on the advertisement video data by superimposing the video based on the output video data of the demodulation unit. Notification about the function of the video / audio output device that the user wishes to release the function restriction on. Received by the first computer under the control of the manufacturer of the device, the function restriction release data for the first computer receiving the notification to execute the function restriction release is advertised through the video / audio output device. A first supply step for supplying to a second computer under management of the advertiser to be paid, and the transferred function release data from the second computer under management of the advertiser to the user A second supply step of supplying the advertisement projection data as accompanying the release data at a free or relatively low price in a form that can be input to the audio output device, and supply in the second supply step The function restriction by the system controller is released based on the function release data acquired by the above and is superimposed on the video based on the output video data of the demodulator. And a function restriction releasing method for the video / audio output apparatus, the method including a function restriction releasing for displaying the advertisement video and an advertisement projecting step.

  In the function restriction release method for the video / audio output device of (9) above, in the first supply step, the manufacturer of the video / audio output device is notified of the function of the video / audio output device that the user desires to release the function restriction. Advertisers who advertise through the video / audio output device function restriction release data for the first computer receiving the notification received by the first computer under the control of the function to release the function restriction To a second computer under the control of

  That is, in the first supply process, the manufacturer of the video / audio output device sells the function restriction release data desired by the user to the advertiser (sold between the vendors). Next, in the second supply step, the function restriction release data transferred to the second computer under the advertiser's management as described above is transferred from the second computer under the advertiser's management to the user. The advertisement projection data is supplied as accompanying the release data at a free or relatively inexpensive price in a form that can be input to the video / audio output device.

  That is, in the second supply step, the advertiser transfers the function restriction release data desired by the user to the user on the condition that the display is accompanied by the advertisement. The user can enjoy a desired function with respect to the video / audio output device at the price of allowing the advertisement to be displayed.

  (10) Before the first supply step, the second computer transmits data representing the function of the video / audio output device that the user desires to release the function restriction to the first computer through the communication network. The function restriction releasing method for the video / audio output device according to (9), wherein the communication step 1 is executed.

In the function restriction release method for the video / audio output device of (10) above, in particular, in the function restriction release method for the video / audio output device of (9), the manufacturer releases the functional restriction according to the user's request to the advertiser. Prior to the first sales process in which data is sold (sold between vendors), the user wishes to release the functional restriction from the second computer at the advertiser's jurisdiction to the first computer at the manufacturer's jurisdiction. A first communication step in which data representing the function of the video / audio output device is transmitted through the communication network is executed.
In the first computer of the manufacturer's jurisdiction, the function restriction release data desired by the user to be sold can be quickly and accurately recognized.

  (11) The video / audio output according to (9), wherein the second supply step is a step of supplying the function release data from the second computer to the user by storing it in a memory card. Function restriction release method for the device.

  In the function restriction release method for the video / audio output device of (11) above, in particular, in the function restriction release method for the video / audio output device of (9), the advertiser sends the function restriction release data according to the user's request to the user. In the second supply step to be provided, the function restriction release data is stored in the memory card and transferred. For this reason, even in an environment where equipment such as a separate communication network is not available, it is possible to reliably transfer the data to be supplied using a memory card that is highly reliable and widely used.

  (12) The function for the video / audio output device according to (9), wherein the second supply step is a step of supplying the function release data from the second computer to the user through a communication network. Restriction release method.

  In the function restriction release method for the video / audio output device of (12) above, in particular, in the operation of the function restriction release method for the video / audio output device of (9), the advertiser restricts the user to the function restriction according to the user's desire. In the second supply step of providing release data, the function restriction release data is supplied through a communication network. For this reason, the function restriction release data according to the user's request can be quickly transferred.

  (13) After the function restriction release and the advertisement projecting step, when the advertiser recognizes that the user has purchased a product related to the advertisement, the projection release data for preventing the advertisement video from being displayed The function restriction release method for a video / audio output device according to (9), wherein an advertisement display release data supply step is provided for providing the user free of charge through the communication network from the computer in (2).

  In the function restriction release method for the video / audio output device of (13) above, the function restriction release method for the video / audio output device of (9) particularly relates to the advertisement after the function restriction release and the advertisement projecting step. Advertisement display cancellation data for providing the display cancellation data from the second computer to the user free of charge through the communication network when the advertiser recognizes that the user has purchased the product. After the supply process is set and this condition is satisfied on the condition that the product is purchased, the user is freed from accepting the advertisement, while the advertiser can give the advertisement.

  (14) When the advertiser recognizes that the accumulated purchase amount of the user related to the predetermined product of the advertiser has reached a certain amount after the function restriction release and the advertisement projection process, an advertisement video is displayed. The video / audio output device according to (9), characterized in that an advertisement projection cancellation data supply step is provided for providing the projection cancellation data to be disabled from the second computer to the user through the communication network free of charge. Function restriction release method.

  In the function restriction release method for the video / audio output device of (14) above, in particular, in the operation of the function restriction release method for the video / audio output device of (9) above, the advertiser predetermined When the advertiser recognizes that the accumulated purchase amount of the user related to the product has reached a certain amount, the network cancels the display cancellation data to prevent the advertisement video from being displayed from the second computer to the user. Since the advertisement release data supply process to be provided free of charge is set through the condition that the accumulated purchase amount of the user related to the advertiser's predetermined product has reached a certain amount, The user is freed from accepting the advertisement, while the advertiser can make a sale.

  (15) The video / audio according to any one of (6) and (9), wherein as the function restriction release data, data in a form in which the function restriction is released with a release period being limited is applied. A function restriction release method for the output device.

  In the function restriction release method for the video / audio output device of (15) above, in particular, in the operation by the function restriction release method for the video / audio output device of (6) or (9), the function restriction is restricted by the function restriction release data. It is released for a limited time, but if this timed release meets the user's desired or desired, the function restriction release data is sold at a lower price than the case where the function restriction is permanently released, This opens the possibility of a reasonable sale that can be purchased by the user.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings to be referred to below, for the sake of convenience, the main part that is the subject of the description is exaggerated as appropriate, and other than the main part is appropriately simplified or omitted.
FIG. 1 is a block diagram showing a video / audio output apparatus (digital television receiver) as an embodiment of the present invention. In this digital television receiver 100, a plurality of selectable broadcast channels that are selectable broadcast channels, and at least some of the selectable broadcast channels included in each are different. A plurality of channels provided corresponding to each analog / digital broadcast wave (a set of broadcast channels) such as a terrestrial broadcast signal, a satellite broadcast signal, and a CATV broadcast signal as a selectable broadcast channel group. As the tuner unit, a terrestrial broadcast tuner 101, a satellite broadcast tuner 102, and a CATV tuner 103 are provided.

  These terrestrial broadcast tuner 101, satellite broadcast tuner 102, and CATV tuner 103 constitute a tuner block 104 as a whole. Each tuner (101, 102, 103) tunes to a channel designated by the user with respect to the broadcast radio wave or broadcast signal supplied to each tuner of this tuner block 104 via an antenna or cable. Receive broadcast signals.

Demodulation as a demodulating unit for obtaining video data and audio data for demodulating the output of a selected one of the tuners (101, 102, 103) of the tuner block 104 to generate video / audio output A video signal is stored in the VRAM 115 via the host controller 106.
On the other hand, the system controller 117 that operates in cooperation with the host controller 106 holds the function restriction data that restricts the function related to the corresponding function unit in the video / audio output device in a changeable manner (for example, permitted or restricted operation modes). Information on the usable tuner is read out from the operation control code memory (PROM) 118 and recognized, and based on this recognition, whether each tuner of the tuner block 104 can function properly via the tuner controller 119 To control.

  Of the plurality of tuners (101, 102, 103), only the broadcast channels that can be selected by the tuner that is allowed to operate can be demodulated as described above to generate video and audio output. . In addition, when the function restriction data retained so as to be changeable is changed, the tuner that can function properly, and therefore the broadcast channel in the selectable range is changed corresponding to the change.

The system controller 117 reads information related to the resolution of the video displayed on the display device 110 from the operation control code memory 118 and controls the display resolution by the video controller 108.
The host controller 106 outputs the video signal stored in the VRAM 115 to the video decoder 107 at appropriate timing, and the video decoder 107 performs a decoding process corresponding to the display resolution controlled by the video controller 108. The video controller 108 outputs the video signal decoded as described above to a display device 110 such as liquid crystal or plasma.

That is, the operation control code memory (PROM) 118 changes the function relating to each tuner (101, 102, 103) of the tuner block 104 as the corresponding function unit and the function restriction data for restricting the display resolution of the display device 110. A function restriction data holding unit is configured to be held as possible.
The system controller 117 also reads and recognizes information related to the audio mode of the audio signal output from the operation control code memory 118 to the audio output device 111, and controls the audio mode by the audio controller 109 based on the recognition. That is, the host controller 106 outputs audio signals to the audio decoder 120 at appropriate timings, and the audio decoder 120 performs a decoding process corresponding to the audio mode controlled by the audio controller 109. The audio controller 109 outputs the decoded audio signal to an audio output device 111 such as a speaker.

That is, the operation control code memory 118 also functions as a function restriction data holding unit that holds the function restriction data that restricts the audio mode that is a function of the audio controller 109 and the audio decoder 120 as the corresponding function units in a changeable manner. .
The memory card interface (I / F) 112 reads update data of the operation mode of the video / audio output device stored in the operation control code memory 118 from a memory card outside the video / audio output device.

The remote control interface (I / F) 113 is not only a normal function for controlling the video / audio output device such as the channel / audio volume change of the video / audio output device, but also the video / audio stored in the operation control code memory 118 in particular. A function for inputting update data (data for releasing the function restriction) of the operation mode (function restriction) of the output device is provided.
On the other hand, the RTC 114 is a real-time clock that constitutes a clock function in the video / audio output device, and the CM-VRAM 116 stores data other than broadcast signals, for example, advertisement and message data.

FIG. 2 is a conceptual diagram showing a function restriction release method for the video / audio output device of FIG.
First, the user notifies the dealer (seller) of the function desired to be released from the restricted functions of the video / audio output device and the device manufacturing number (1).
Next, the dealer notifies the manufacturer (manufacturer of the video / audio output device) of the desired function and device serial number to be released by the user. This notification is transmitted, for example, from the second computer under the jurisdiction of the distributor to the first computer under the jurisdiction of the manufacturer through the communication network, which represents the function of the video / audio output device that the user desires to release the function restriction. This is executed as the first communication process. According to this method, the function restriction release data desired by the user to be sold can be quickly and accurately recognized in the first computer under the jurisdiction of the manufacturer ... (2)
The manufacturer sells to the store a release key (function restriction release data) that is unique to the video / audio output device corresponding to the device serial number notified from the store side and that the user wants to release. In this sale, for example, the function restriction is canceled by the first computer under the control of the manufacturer of the video / audio output device with respect to the function of the video / audio output device that the user desires to release the function restriction. This function restriction release data is transferred as a first sales process for a fee to a second computer under the control of the distributor of the video / audio output device (3).
The store sells the release key to the user. The product form of the release key includes a print medium on which the release key is printed, a memory card, or the like. In this sale, for example, the function release data transferred in the first sale process is supplied to the user from the second computer under the management of the seller in a form that can be input to the video / audio output device for a fee. The second sales process is performed. When this supply is performed using a memory card as described above, even in an environment where facilities such as a separate communication network are not available, a memory card that is highly reliable and is widely used is sold. There is an advantage that data can be transferred reliably ... (4)
A function restriction release step of releasing the function restriction by the system controller 117 based on the function release data acquired by the user as described above (for example, updating of data relating to the function restriction held in the operation control code memory 118). Is executed, and the function restriction as originally desired by the user is released.

FIG. 3 is a flowchart showing a processing procedure for releasing or updating a restricted function related to the video / audio output device of FIG. 1.
4 is a conceptual diagram showing the initial contents of the operation control code as the function restriction data held in the operation control code memory (PROM) 118 as the function restriction data holding unit in the video / audio output device of FIG. .

FIG. 5 is a conceptual diagram showing the changed contents of the operation control code as the function restriction data held in the operation control code memory (PROM) 118 as the function restriction data holding unit in the video / audio output device of FIG. is there.
In FIG. 3, when the video / audio output device is powered on, the system controller 117 reads and recognizes the “operation control code” held in the operation control code memory 118 (S301).

As shown in FIG. 4, the “operation control code” restricts three types of operations, “resolution”, “sound”, and “tuner”. It should be noted that the operation restriction target is not limited to these three. Each function includes a password for comparison with a release key, an operation state (indicating whether the function is in a release state or a restricted state), an operation deadline (function release deadline), etc. The state of the audio output device is as follows for the sake of explanation: “Resolution”: 480p is usable and indefinite.

720p can be used and will expire on November 23, 2004.
1080p cannot be used.
“Voice”: Standard stereo function can be used and will be used indefinitely.
Surround function cannot be used "Tuner": Digital terrestrial tuners can be viewed and will not expire.

BS digital tuner cannot be used.
The CATV tuner can be used and will expire on December 31, 2004.
The system controller 117 determines the operation time limit by comparing the operation time limit of the “operation control code” in the operation control code memory 118 with the real-time clock RTC 114 in the video / audio output device (S302).

Now, it is assumed that the operation date and time of this video / audio output apparatus is November 24, 2004. The “Resolution” 720p in FIG. 4 “Mode 2” is initialized until the December 23, 2004 operation period, so that the operation mode is initialized in Step S303 and cannot be used as in “Mode 2” in FIG. Set to “close”.
In step S304, the release key obtained by the user is performed via the remote control interface 113. In other words, a release key purchased from a store with a print medium is received from the remote control. The function purchased by the user corresponds to the sound surround of “mode 5” in FIG. If the function can be canceled by comparing the cancel key input by the remote controller with the password “PQRSTU”, the sound surround function is set to “open” which can be used as in “mode 5” in FIG. 5 in step S306. Updated. The expiration date is until January 31, 2005 because the user desires a short period. The release key for the limited period is less expensive than the unlimited period.

  In step S306, the release key obtained by the user is read via the memory card interface 112. That is, the function is canceled by a release key purchased from a store with a memory card. The function purchased by the user corresponds to the BS digital of the tuner of “Mode 7” in FIG. A memory card on which a release key that can be purchased is recorded is inserted into the memory card interface 112 of the video / audio output apparatus. If the function can be canceled by comparing the cancel key in the memory card with the password “2A3B4C” (S308), then in step S309, the BS digital function of the tuner can be used as in “mode 7” of FIG. It is updated to “open”.

The system controller 117 controls the tuner controller 119, the video controller 108, and the audio controller 109 according to the updated “operation control code” in the operation control code memory 118.
FIG. 6 is a conceptual diagram showing another example of a function restriction release method for the video / audio output apparatus of FIG. In the example of FIG. 6, the function restriction is released with the release key acquired by the user so that the advertiser provides the user with a release key for releasing the restricted function.

The user notifies the advertiser of the function desired to be released from the restricted functions of the video / audio output device and the device manufacturing number (1).
Upon receiving this notification, the advertiser notifies the manufacturer (manufacturer of the video / audio output device) of the function and device serial number that the user wants to cancel. In this notification, for example, data representing the function of the video / audio output device that the user desires to release the function restriction is transmitted from the second computer of the advertiser's jurisdiction to the first computer of the manufacturer's jurisdiction through the communication network. This is executed as the first communication process. According to this method, the function restriction release data desired by the user to be sold can be quickly and accurately recognized on the first computer under the jurisdiction of the manufacturer ... (2)
The manufacturer sells to the advertiser a release key (function restriction release data) that is unique to the video / audio output device corresponding to the device serial number notified from the advertiser side and that the user wants to release. In this sale, for example, the function restriction is canceled by the first computer under the control of the manufacturer of the video / audio output device with respect to the function of the video / audio output device that the user desires to release the function restriction. This is performed as a first supply step of transferring the function restriction release data to the second computer under the control of the advertiser who performs the advertisement using the video / audio output device ... (3)
The advertiser provides the user with advertisement data and a function release key for displaying an advertisement on the video / audio output device at no cost or at low cost. The provision form is distributed to the user by e-mail as data, or the user downloads the data from the server designated by the advertiser. The user writes this data to the memory card and uses it. The release key may have a time limit or may be indefinite depending on the business content. This provision (supply) is performed by, for example, transferring the function restriction release data transferred to the second computer under the control of the advertiser in the first supply step from the second computer under the control of the advertiser. Further, it is performed as a second supply step of supplying the advertisement projection data as accompanying the release data at a free or relatively low price in a form that can be input to the video / audio output device. In the second supply step, the advertiser transfers the function restriction release data desired by the user to the user on the condition that the display is accompanied by the advertisement. The user can enjoy a desired function with respect to the video / audio output device at the price of allowing the advertisement to be displayed. (4)
When a user purchases an advertising product by viewing an advertisement ... (5)
It is also possible to select a method in which the advertiser provides a release key with no advertisement. (6)
FIG. 7 is a flowchart showing an example of another processing procedure when the restricted function related to the video / audio output device of FIG. 1 is released or updated.

FIG. 8 shows another example of the changed contents of the operation control code as the function restriction data held in the operation control code memory (PROM) 118 as the function restriction data holding unit in the video / audio output device of FIG. FIG.
FIG. 9 is a diagram illustrating a state in which an advertisement is displayed on the display screen based on the advertisement data acquired in the processing procedure of FIG.

In FIG. 7, when the power of the video / audio output device is turned on, the “operation control code” in the operation control code memory 118 is read and recognized by the system controller 117 (S701). It is assumed that the “operation control code” in the operation control code memory 118 is initially in the state shown in FIG. That is,
“Resolution”: 480p is usable and indefinite.

720p can be used and will expire on November 23, 2004.
1080p cannot be used.
“Voice”: Standard stereo function can be used and will be used indefinitely.
Surround function cannot be used "Tuner": Digital terrestrial tuners can be viewed and will not expire.

BS digital tuner cannot be used.
The CATV tuner can be used and will expire on December 31, 2004.
The system controller 117 determines the operation time limit by comparing the operation time limit of the “operation control code” in the operation control code memory 118 with the real-time clock RTC 114 in the video / audio output device (S702).

Now, it is assumed that the operation date and time of this video / audio output apparatus is November 24, 2004. The “Resolution” 720p in FIG. 4 “Mode 2” is not usable as in “Mode 2” in FIG. 8 because the operation mode is initialized in Step S703 because the operation period is until December 23, 2004. Set to “close”.
In step S 704, the release key obtained by the user is performed via the memory card interface (I / F) 112. That is, the function is canceled using the release key provided by the advertiser. The function that the user desires to release and is provided by the advertiser is BS digital compatible with an operation period until January 23, 2005 of the tuner of “Mode 7” in FIG.

  A memory card in which a release key provided to the memory card interface (I / F) 112 of the video / audio output device is recorded is inserted. If the function can be canceled by comparing the release key in the memory card and the password “2A3B4C” (S705), the BS digital function of the tuner operates as in “mode 7” in FIG. 8 in the next step S706. The status is updated to “open” and the operation deadline is updated to “January 23, 2005”.

  In step S707, the advertisement data provided from the advertiser together with the release key is read from the memory card. The advertisement data read in step S707 is written in the CM-VRAM 116 provided for storing advertisements, and the video decoder 107 performs decoding processing by superimposing the video signal stored in the VRAM 115 and the advertisement data in the CM-VRAM 116. Do.

  The video controller 108 outputs the decoded video signal to the display device 110 such as liquid crystal or plasma, whereby an advertisement is displayed at an arbitrary place as shown in FIG. There are various patterns for displaying advertisements in the form of providing data, such as when the power is turned on, at regular intervals. The system controller 117 controls the tuner controller 119 according to the updated “operation control code” in the operation control code memory 118 so that the BS digital tuner 102 of the tuner block 104 can be used.

  When the user purchases a product displayed on the display device, the advertisement effect is improved by providing a release key with no expiration date and other function release keys from the advertiser.

1 is a block diagram showing a video / audio output device (digital television receiver) as an embodiment of the present invention. FIG. It is a conceptual diagram showing the function restriction release method with respect to the audiovisual output apparatus of FIG. It is a flowchart which shows the process sequence in the case of canceling | releasing or updating the restricted function regarding the video / audio output device of FIG. FIG. 2 is a conceptual diagram showing initial contents of an operation control code as function restriction data held in an operation control code memory as a function restriction data holding unit in the video / audio output device of FIG. 1. It is a conceptual diagram showing the content after the change of the operation control code as the function restriction data held in the operation control code memory as the function restriction data holding unit in the video / audio output device of FIG. It is a conceptual diagram showing the other example of the function restriction release method with respect to the audiovisual output apparatus of FIG. 12 is a flowchart illustrating another example of processing procedures when a restricted function related to the video / audio output device of FIG. 1 is canceled or updated. It is a conceptual diagram showing the other example of the content after a change of the operation control code as the function restriction data hold | maintained in the operation control code memory as a function restriction data holding | maintenance part in the video / audio output device of FIG. It is a figure showing the state by which an advertisement is displayed on a display screen based on the advertisement data acquired by the processing procedure of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Digital television receiver 101 ... Terrestrial broadcast tuner 102 ... Satellite broadcast tuner 103 ... CATV tuner 104 ... Tuner block 105 ... Demodulator 106 ... Host controller 107 ... Video decoder 108 ... Video controller 109 ... Audio controller 110 ... Display device DESCRIPTION OF SYMBOLS 111 ... Audio | voice output device 112 ... Memory card interface (I / F) 113 ... Remote control interface (I / F) 114 ... RTC 115 ... VRAM 116 ... CM-VRAM 117 ... System controller 118 ... Operation control code memory (PROM) 119 ... Tuner controller 120 ... Audio decoder

Claims (15)

  A selectable broadcast that is a set of selectable broadcast channels that are selectable broadcast channels and that is a set of a plurality of selectable broadcast channels that are included in each of the selectable broadcast channels. A plurality of tuner units provided corresponding to each channel group, and video data and audio for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizing and recognizing the function restriction data held in the function restriction data holding part, the function restriction data holding part that holds the function restriction data that restricts the function related to the corresponding function part in a changeable manner, and the function restriction data holding part The demodulating unit outputs the output of one tuner unit selected from the tuner units allowed to function among the plurality of tuner units depending on the function restriction data. Audio-video output device, characterized in that it comprises a system controller that controls to supply.   Tunable tuning unit, demodulating unit for obtaining video and audio data for demodulating the output of the tuner unit to generate video / audio output, and function restriction data for limiting functions related to the corresponding functional unit can be changed A function restriction data holding unit held in the function restriction data, and a plurality of pieces of audio data that are output from the demodulation unit based on the recognized function restriction data, recognizing the function restriction data held in the function restriction data holding unit A system controller that controls the corresponding audio output function unit to output audio in one audio output mode selected from the audio output modes allowed to function in the audio output mode A video / audio output device.   Tunable tuning unit, demodulating unit for obtaining video and audio data for demodulating the output of the tuner unit to generate video / audio output, and function restriction data for limiting functions related to the corresponding functional unit can be changed A function restriction data holding unit that holds the image data, and a resolution related to the video data that is output from the demodulating unit based on the recognized function restriction data by recognizing the function restriction data held in the function restriction data holding unit. A system controller for controlling a corresponding video display output function unit to display a video in one video output mode selected from video output modes allowed to function among a plurality of different video output modes; And a video / audio output device.   A selectable broadcast that is a set of selectable broadcast channels that are selectable broadcast channels and that is a set of a plurality of selectable broadcast channels that are included in each of the selectable broadcast channels. A plurality of tuner units provided corresponding to each channel group, and video data and audio for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizing and recognizing the function restriction data held in the function restriction data holding part, the function restriction data holding part that holds the function restriction data that restricts the function related to the corresponding function part in a changeable manner, and the function restriction data holding part The demodulating unit outputs the output of one tuner unit selected from the tuner units allowed to function among the plurality of tuner units depending on the function restriction data. Control to supply and output sound in one sound output mode selected from sound output modes allowed to function among a plurality of sound output modes related to sound data that is output from the demodulator. Selected from among video output modes that are allowed to function among a plurality of video output modes that control audio output function units corresponding to the above and that have different resolutions related to video data that is output from the demodulation unit And a system controller that controls a corresponding video display output function unit to display and output video in one video output mode.   A selectable broadcast that is a set of selectable broadcast channels that are selectable broadcast channels and that is a set of a plurality of selectable broadcast channels that are included in each of the selectable broadcast channels. A plurality of tuner units provided corresponding to each channel group, and video data and audio for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizing and recognizing the function restriction data held in the function restriction data holding part, the function restriction data holding part that holds the function restriction data that restricts the function related to the corresponding function part in a changeable manner, and the function restriction data holding part The demodulating unit outputs the output of one tuner unit selected from the tuner units allowed to function among the plurality of tuner units depending on the function restriction data. A system controller for controlling to supply, wherein the system controller is provided with release data for releasing part or all of the functions restricted by the function restriction data, and output video data of the demodulator Output from the demodulator enabled to be displayed by the release data when the advertiser provides advertisement display data associated with the release data for displaying the advertisement video superimposed on the video based on A video / audio output device for controlling a corresponding video display output function unit to project an advertisement video based on the advertisement video data by superimposing it on a video based on the video data.   A selectable broadcast that is a set of selectable broadcast channels that are selectable broadcast channels and that is a set of a plurality of selectable broadcast channels that are included in each of the selectable broadcast channels. A plurality of tuner units provided corresponding to each channel group, and video data and audio for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizing and recognizing the function restriction data held in the function restriction data holding part, the function restriction data holding part that holds the function restriction data that restricts the function related to the corresponding function part in a changeable manner, and the function restriction data holding part The demodulating unit outputs the output of one tuner unit selected from the tuner units allowed to function among the plurality of tuner units depending on the function restriction data. A function restriction release method for a video / audio output device including a system controller that controls the supply of the video / audio output device for which the user desires to release the function restriction. First, the function restriction release data for executing the release of the function restriction by the first computer under the management of the merchant is transferred to the second computer under the management of the distributor of the video / audio output device for a fee. And a second selling step of supplying the transferred function release data to the user from the second computer under the management of the seller in a form that can be input to the video / audio output device for a fee. The function restriction by the system controller is released based on the function release data acquired by the supply in the second sales process. That function restriction release process and the function restriction release method for the audio-video output device, which comprises a.   Prior to the first sales step, the first communication for transmitting data representing the function of the video / audio output device that the user desires to release the function restriction from the second computer to the first computer through the communication network. The function restriction releasing method for the video / audio output device according to claim 6, wherein the step is executed.   7. The function for an audio / video output apparatus according to claim 6, wherein the second selling step is a step of transferring the function release data from the second computer to the user by storing it in a memory card. Restriction release method.   A selectable broadcast that is a set of selectable broadcast channels that are selectable broadcast channels and that is a set of a plurality of selectable broadcast channels that are included in each of the selectable broadcast channels. A plurality of tuner units provided corresponding to each channel group, and video data and audio for demodulating the output of one of the plurality of tuner units to generate a video / audio output Recognizing and recognizing the function restriction data held in the function restriction data holding part, the function restriction data holding part that holds the function restriction data that restricts the function related to the corresponding function part in a changeable manner, and the function restriction data holding part The demodulating unit outputs the output of one tuner unit selected from the tuner units allowed to function among the plurality of tuner units depending on the function restriction data. A system controller for controlling to supply, wherein the system controller is provided with release data for releasing part or all of the functions restricted by the function restriction data, and output video data of the demodulator When the advertising projection data for displaying the advertising video superimposed on the video based on the video is provided by the advertiser as accompanying the cancellation data, the demodulator of the demodulator enabled to display by the cancellation data A function restriction release method for a video / audio output device for controlling a corresponding video display output function unit to superimpose an advertisement video based on the advertisement video data by superimposing it on a video based on output video data, comprising: A notification regarding the function of the video / audio output device for which the function restriction is desired to be released. Advertisement that is received by the first computer under the management of the trader, and that advertises function restriction release data for the first computer that has received the notification to release the function restriction through the video / audio output device A first supply step for supplying to a second computer under the control of the main for a fee, and outputting the transferred function release data from the second computer under the control of the advertiser to the user. Acquired by a second supply step of supplying the advertisement projection data as accompanying the release data at a free or relatively low price in a form that can be input to the device, and supply in the second supply step The function restriction by the system controller is released based on the function release data, and the image is broadened by superimposing on the video based on the output video data of the demodulator. A function restriction release method for a video and audio output device, comprising: a function restriction release for projecting a notification video and an advertisement projecting step.   Prior to the first supply step, a first communication for transmitting data representing a function of the video / audio output device that the user desires to release the function restriction from the second computer to the first computer through the communication network. The function restriction releasing method for the video / audio output device according to claim 9, wherein the step is executed.   10. The function for a video / audio output device according to claim 9, wherein the second supply step is a step of supplying the function release data from the second computer to the user by storing it in a memory card. Restriction release method.   10. The function restriction release method for a video / audio output device according to claim 9, wherein the second supply step is a step of supplying the function release data from the second computer to the user through a communication network. .   When the advertiser recognizes that the user has purchased a product related to the advertisement after the function restriction release and advertisement display process, the display cancellation data for preventing the advertisement video from being displayed on the second computer. 10. The function restriction release method for an audio / video output apparatus according to claim 9, wherein an advertisement display release data supply step is provided for providing the user free of charge through a communication network.   After the function restriction release and the advertisement projecting process, when the advertiser recognizes that the accumulated purchase amount of the user related to the advertiser's predetermined product has reached a certain amount, the advertisement video is not projected. 10. The function restriction release for the video / audio output device according to claim 9, wherein an advertisement projection cancellation data supply step is provided for providing projection cancellation data from the second computer to the user free of charge via a communication network. Method.   The video / audio output device according to claim 6, wherein the function restriction release data is data in a form in which the release of the function restriction is performed with a release period limited. Function restriction release method.

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