JP3898994B2 - Recording / reproducing apparatus and data erasing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device in which data, that are objects for erasing, are properly selected and erased. <P>SOLUTION: A system control microcomputer executes a protect detecting process to detect a protection track in a disk (a step S30) when all erasing is instructed (steps S11 to S15) through an operating section. When a protection track is detected, the microcomputer executes an erasing object selecting process (a step S40) in which erasing objects are selected as the protection track or the tracks excluding the protection track. Then, confirmation display of ERASE is conducted and erasing object tracks are erased (a step S18) when execution of ERASE is instructed (steps S16 and S17). In other words, tracks, which are objects being selected to be erased by a user, are erased from the disk. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording / reproducing apparatus and a data erasing method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, electronic devices such as printers and modems that are connected to a control device such as a personal computer (personal computer) are known. Such an electronic device has an interface such as RS232C or Centronics, for example, is connected to a control device via a predetermined cable, and operates according to control from the control device.
In recent years, USB (Universal Serial Bus) or the like has attracted attention as an interface standard adopted for personal computers and the like (control devices). This USB is supported by a general OS (Operating System) installed in a personal computer. To use a hot plug-in or electronic device that can be connected to an electronic device with the personal computer turned on. It features plug-and-play that can automatically set up.
[0003]
Recently, a new interface standard called “NetMD (registered trademark)” for connecting a personal computer and an MD (mini disk) recording / reproducing device using the USB has been developed.
The NetMD standard is an extension standard for music MD, and based on a strong copyright protection technology, music data recorded on a hard disk of a personal computer is transferred to an MD recording / reproducing device and recorded on a commercially available recording MD. Is. At that time, since the music data in a state before decoding is transferred as it is, deterioration in sound quality due to decoding / encoding or the like is prevented. Further, unlike the recording associated with the reproduction, since the data transfer is substantial, the recording is completed several times to several tens of times faster than the normal recording.
[0004]
Each audio maker manufactures various MD recording / reproducing devices corresponding to the NetMD standard having such characteristics and has started to put them on the market. Such MD recording / reproducing devices are gradually spreading among users who own personal computers.
[0005]
As described above, the NetMD standard is characterized by a strong copyright protection technology, and prevents random diffusion of music data. Specifically, copyright protection is effectively implemented by a check-out / check-in function.
Here, “checkout” refers to transferring music data (contents) from a personal computer to an MD recording / reproducing device (copied to a recording MD).
On the other hand, the check-in means that the music data (actually the content hash) transferred and recorded to the MD recording / playback device by the check-out is returned to the personal computer (the same personal computer as the transfer source) to record and play back the MD. To make the music data unusable on the device.
Further, each music data has a prescribed number of check-outs (for example, three times as an initial value). Then, each time the check-out is performed, the personal computer decreases the limit number by one and prohibits check-out exceeding the limit number. In addition, since the limit number is increased by 1 at the time of check-in, the user can freely download music data between the PC and the MD recording / playback device on condition that check-in after check-out is performed appropriately. Can be moved.
[0006]
The MD on which the music data checked out according to the NetMD standard is recorded can be reproduced by a recording / reproducing device such as an ordinary MD recorder. For example, in a recording / playback device compliant with the MDLP standard, music data can be played back even when the MD is checked out in the long-time recording mode of “ATRAC3 LP2” or “ATRAC3 LP4”.
[0007]
A conventional recording / reproducing apparatus will be described below with reference to the block diagram shown in FIG. As shown in the figure, this recording / reproducing apparatus includes a system control microcomputer 111, an operation unit 112, a display panel 113, and an MD mechanical unit 120.
[0008]
The system control microcomputer 111 controls the MD mechanical unit 120 to record music data on the disk d (MD) and reproduce the music data recorded on the disk d. Specifically, the system control microcomputer 111 controls the MD mechanical unit 120 by issuing a predetermined control command to an MD mechanical control microcomputer 121 described later.
The operation unit 112 generates an instruction signal according to a user operation and supplies the instruction signal to the system control microcomputer 111. Specifically, the operation unit 112 has a “TRACK EDIT key” for instructing editing of music data, an “UP / DOWN key” for instructing change of editing items, and a “TRACK EDIT key” for instructing selection of editing items. A “SET key” and an “ENTER key” for instructing execution of editing are included. When these keys are operated by the user, the operation unit 112 supplies a corresponding instruction signal to the system control microcomputer 111.
The display panel 113 is controlled by the system control microcomputer 111 and displays characters, graphics, and the like indicating the operating status of the recording / reproducing apparatus.
[0009]
The MD mechanical unit 120 includes an MD mechanical control microcomputer 121, a head driver 122, a recording head 123, a spindle motor 124, an optical pickup 125, a feed motor 126, an RF amplifier 127, a digital signal processing circuit 128, A buffer memory 129.
[0010]
The MD mechanical control microcomputer 121 controls the digital signal processing circuit 128 according to the control command sent from the system control microcomputer 111.
The head driver 122 controls the recording head 123 to write music data or the like on the disk d.
The spindle motor 124 rotates the disk d mounted on the turntable. The optical pickup 125 reads out music data and the like from the disk d carried by the feed motor 126 and supplies it to the digital signal processing circuit 128 via the RF amplifier 127.
[0011]
The digital signal processing circuit 128 operates as an ADIP (ADdress In Pre-groove) decoder, an EFM (Eight to Fourteen Modulation) decoder, a shock proof memory controller, an ATRAC (Adaptive TRansform Acoustic Coding) encoder / decoder, and a servo controller. To do.
The buffer memory 129 temporarily stores a predetermined amount of music data during reproduction or the like.
[0012]
The recording / reproducing apparatus having such a configuration reproduces music data checked out according to the NetMD standard or normally recorded music data, and edits (deletes, divides, combines, etc.) the music data. Can do.
Hereinafter, an example of the editing operation of the recording / reproducing apparatus shown in FIG. 8 will be briefly described with reference to FIG. FIG. 9 is a flowchart for explaining data erasure processing for erasing all music data recorded on the disk d (ALL ERASE). This data erasure process is executed by the system control microcomputer 111 in response to the operation of the operation unit 112 by the user.
[0013]
First, the system control microcomputer 111 waits for subsequent processing until the TRACK EDIT key is input (step S101). Then, when the TRACK EDIT key is input, it is determined whether or not the reproduction operation or the recording operation is stopped and the data can be written to the disk d (step S102).
The system control microcomputer 111 returns the process to step S101 when it is not stopped and is not in a state where writing is possible.
[0014]
On the other hand, when the system control microcomputer 111 is stopped and in a state where writing is possible, the system control microcomputer 111 inputs the UP / DOWN key on the operation unit 112 and selects the ALL ERASE item with the SET key. Then, the execution of the subsequent process is waited (steps S103 to S105).
When the item “ALL ERASE” is selected, the system control microcomputer 111 displays a message for confirming ALL ERASE on the display panel 113 (step S106), and the ENTER key is input on the operation unit 112. (Step S107).
[0015]
When the ENTER key is input, the system control microcomputer 111 executes ALL ERASE (step S108). That is, the system control microcomputer 111 controls the MD mechanical control microcomputer 121 to erase all music data recorded on the disk d.
[0016]
The system control microcomputer 111 determines whether or not the execution result returned from the MD mechanical control microcomputer 121 is information indicating successful erasure (step S109).
The system control microcomputer 111 displays a predetermined error message on the display panel 113 when the erasure is not successful (step S110). On the other hand, when the erasure is successful, the system control microcomputer 111 displays a message indicating the completion of ALL ERASE. The image is displayed on the display panel 113 (step S111).
[0017]
[Problems to be solved by the invention]
However, the conventional recording / reproducing apparatus as shown in FIG. 8 has a problem that the checked-out music data is not considered at all in the data erasing process shown in FIG. That is, in the conventional recording / reproducing apparatus, when ALL ERASE is instructed, not only the normally recorded music data but also the checked out music data is erased.
This is because, even if the protect information is set in the track mode (information defining the attribute, etc.) of the music data (track) that is checked out, this protect information is not taken into account when erasing all music data. Is due to not being.
[0018]
For this reason, if ALL ERASE is instructed to the disc d on which normally recorded music data and checked-out music data are recorded, even music data that should not be erased carelessly is erased. It will be.
If the music data that has been checked out is erased alone by the recording / playback device, check-in cannot be performed, so the number of check-outs on the personal computer remains reduced and the next check-out cannot be performed. is there.
[0019]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a recording / reproducing apparatus and a data erasing method capable of appropriately selecting and erasing data to be erased.
[0020]
[Means for Solving the Problems]
  In order to achieve the above object, a recording / reproducing apparatus according to the first aspect of the present invention provides:
  With copyright protection from external devicesFor data transferThanA recording / reproducing apparatus for recording / reproducing data using a recording medium capable of recording data set in a protected state,
  Instruction means for instructing batch erasure of a plurality of data recorded on the recording medium;
  When batch erasure is instructed by the instruction means, detection means for detecting the protection state of each data;
  When at least one protected state data is detected by the detecting means, at least data other than the protected state, protected data, and all data regardless of the protected state are selected as erasable objects. Presenting means to present;
  Selecting means for selecting one of the erasure targets presented by the presenting means;
  Erasing means for erasing data to be erased selected by the selecting means from a recording medium;
  It is characterized by providing.
[0021]
The detecting means may detect a protected state of each data according to information included in a track mode that defines an attribute of each data recorded on the recording medium.
[0022]
  In order to achieve the above object, a recording / reproducing apparatus according to the second aspect of the present invention provides:
  A recording / reproducing apparatus for recording / reproducing music data using a recording medium capable of recording music data to be checked out by prescribed data transfer,
  SaidInstruction means for instructing batch erasure of all music data recorded on the recording medium;
  When batch erasure is instructed by the instruction means,ToDetection means for detecting whether the checked out music data is included;
  If at least one piece of checked-out music data is detected by the detecting means, at leastPresenting means for presenting music data excluding checked-out music data, checked-out music data, and all music data regardless of check-out as selectable deletion targets;
  Selecting means for selecting one of the erasure targets presented by the presenting means;
  Erasure means for erasing music data to be erased selected by the selection means from a recording medium;
  It is characterized by providing.
[0023]
  In order to achieve the above object, a data erasing method according to the third aspect of the present invention includes:
  With copyright protection from external devicesFor data transferThanA data erasing method in a recording / reproducing apparatus for recording / reproducing music data using a recording medium capable of recording music data set in a protected state,
  An instruction step for instructing batch erasure of all music data recorded on the recording medium;
  When batch erasure is instructed in the instructing step, a detecting step for detecting a protected state of each music data;
  If at least one protected music data is detected in the detection step, at least music data other than the protected state, protected music data, and all music data regardless of the protected state are selected. A presentation step to present as possible erasure targets;
  A selection step of selecting any of the deletion targets presented in the presenting step;
  An erasing step of erasing the music data to be erased selected in the selection step from a recording medium;
  It is characterized by providing.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
A recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.
[0025]
FIG. 1 is a block diagram showing an example of the configuration of a system including a recording / reproducing apparatus 1 applied to the embodiment of the present invention. As shown in the figure, this system is configured by connecting a recording / reproducing apparatus 1 and a personal computer 3 via a USB cable C.
[0026]
The recording / reproducing apparatus 1 is an audio device compliant with the “NetMD (registered trademark)” standard, and as shown in the figure, a security circuit 11, a security control microcomputer 12, a system control microcomputer 13, an operation unit 14, and a display The panel 15 and the MD mechanical unit 16 are configured.
[0027]
That is, the recording / reproducing apparatus 1 records the music data transferred from the personal computer 3 on the disc d (MD; mini disc) at the time of checkout according to the NetMD standard. At the time of check-in, the music data recorded on the disk d is returned to the personal computer 3 (actually, a content hash is returned and the music data is deleted from the disk d).
At the time of check-out / check-in, the recording / reproducing apparatus 1 generates a content hash (information uniquely determined according to music data and used to specify music data) for appropriately protecting the copyright. , Send to PC 3.
[0028]
Incidentally, the disk d is provided with a UTOC (User Table Of Contents) recording area, and stores UTOC information as shown in FIG.
The UTOC information is information for managing music data recorded on the disk d. For example, a track mode is set in an area indicated by hatching in the drawing.
The track mode is information defining whether or not the music data can be protected, the type of recording mode, and the like, and the meaning of each bit value is defined as shown in FIG.
Note that “0” (Write Protected) is set to d1 (Write Protect) in the figure for music data checked out in accordance with the NetMD standard. On the other hand, “1” (Write Permitted) is set to d1 in the figure for normally recorded music data.
[0029]
Returning to FIG. 1, the security circuit 11 includes a USB interface for communicating with the personal computer 3 via the USB cable C, and is controlled by the security control microcomputer 12 to authenticate with the personal computer 3. Etc.
[0030]
The security control microcomputer 12 generates a content hash from the sound group data, track mode, and content size acquired by the system control microcomputer 13 from the MD mechanical unit 16.
[0031]
The system control microcomputer 13 controls the recording / reproducing apparatus 1 as a whole by controlling the security control microcomputer 12 and the MD mechanism unit 16 (MD mechanism control microcomputer 21).
For example, the system control microcomputer 13 executes a data erasing process or the like, which will be described later, checks the protected state of the music data (track), receives the selection of the erasing track, and erases the target track from the disk d.
The system control microcomputer 13 includes a memory and can store information indicating the track protection state.
[0032]
The operation unit 14 includes, for example, a plurality of key switch groups, and supplies instruction information in accordance with a user operation (pressing and the like) to the system control microcomputer 13.
Specifically, the operation unit 14 has a “TRACK EDIT key” for instructing editing of music data, an “UP / DOWN key” for instructing change of editing items, and a “UP / DOWN key” for instructing selection of editing items. A “SET key” and an “ENTER key” for instructing execution of editing are included. When these keys are operated by the user, the operation unit 14 supplies a corresponding instruction signal to the system control microcomputer 13.
[0033]
The display panel 15 is composed of a liquid crystal display panel or the like, and displays characters, figures, and the like indicating the operation status of the recording / reproducing apparatus 1 in accordance with display data supplied from the system control microcomputer 13.
For example, when music data is edited (ALL ERASE), information indicating a track to be erased (such as a protected track or other tracks) is displayed.
[0034]
The MD mechanical unit 16 includes an MD mechanical control microcomputer 21, a head driver 22, a recording head 23, a spindle motor 24, an optical pickup 25, a feed motor 26, an RF amplifier 27, a digital signal processing circuit 28, And a buffer memory 29.
[0035]
The MD mechanical control microcomputer 21 controls the digital signal processing circuit 28 in accordance with a control command sent from the system control microcomputer 13.
For example, when the music data is completely erased (ALLERASE) from the disk d in accordance with the control command, the MD mechanical control microcomputer 21 reads the track mode of each music data via the digital signal processing circuit 28, and the system control microcomputer 13 To supply.
The head driver 22 controls the recording head 23 to write music data, title information, etc. on the disk d.
The recording head 23 records music data or the like on the disk d by magnetizing the recording surface of the disk d heated to the Curie point or higher by the optical pickup 25. Further, the selected music data (track) is erased from the disk d.
[0036]
The spindle motor 24 rotationally drives a turntable (not shown) on which the disk d is mounted.
The optical pickup 25 irradiates a recording surface of the disk d with laser light having a predetermined wavelength when reproducing music data, receives the reflected light, and converts it into an electrical signal. The optical pickup 25 supplies the converted electric signal to the RF amplifier 27.
The optical pickup 25 irradiates the recording surface of the disk d with laser light when recording music data, and heats it until it reaches the Curie point or higher.
The feed motor 26 is controlled by the digital signal processing circuit 28 and moves the optical pickup 25 to a predetermined position on the disk d.
The RF amplifier 27 generates an RF signal, a focus error signal, a tracking error signal, and the like from the electrical signal supplied from the optical pickup 25. The RF amplifier 27 supplies the generated RF signal or the like to the digital signal processing circuit 28 or the like.
[0037]
The digital signal processing circuit 28 is controlled by the MD mechanical control microcomputer 21 to control the spindle motor 24, the optical pickup 25, the feed motor 26, the head driver 22, and the like.
For example, when the digital signal processing circuit 28 is instructed to read the track mode of the music data from the MD mechanical control microcomputer 21, the digital signal processing circuit 28 controls the optical pickup 25, the feed motor 26, and the like from the UTOC information as shown in FIG. Read the target track mode.
When the MD mechanical control microcomputer 21 instructs to erase the music data (track), the optical pickup 25, the head driver 22 and the like are controlled to erase the target track from the disk d (specifically, FIG. 2) update the UTOC information as shown in FIG.
The buffer memory 29 temporarily stores a predetermined amount of music data during reproduction or recording.
[0038]
On the other hand, the personal computer 3 includes a general-purpose personal computer equipped with an arithmetic unit such as a CPU, a storage element such as a memory and a hard disk, an operation device such as a mouse and a keyboard, a display device such as a display, and a USB interface.
The personal computer 3 operates in accordance with an OS (Operating System) installed on a hard disk or the like, and executes application software corresponding to the NetMD standard on the OS.
Specifically, the personal computer 3 uses the checkout function to transfer music data (contents) stored in advance on the hard disk to the recording / reproducing apparatus 1 and record it on the disk d.
[0039]
Hereinafter, an example of the editing operation of the recording / reproducing apparatus 1 according to the embodiment of the present invention will be briefly described with reference to FIG. FIG. 4 is a flowchart for explaining data erasure processing for appropriately erasing music data recorded on the disk d. This data erasure process is executed by the system control microcomputer 13 in response to the operation of the operation unit 14 by the user.
[0040]
First, the system control microcomputer 13 waits for subsequent processing until a TRACK EDIT key for instructing editing of music data is input on the operation unit 14 (step S11).
When the TRACK EDIT key is input, the system control microcomputer 13 is in a state in which the playback operation and the recording operation are stopped in the recording / reproducing apparatus 1 and data can be written to the disk d. It is determined whether or not (step S12).
If the system control microcomputer 13 is not stopped and is not in a state in which writing is possible, the system control microcomputer 13 returns the process to step S11.
[0041]
On the other hand, when the recording / reproducing apparatus 1 is stopped and in a state where writing is possible, the system control microcomputer 13 receives the UP / DOWN key for instructing the change of the edit item, and the edit item Until the SET key for selecting is input and the ALL ERASE item is selected, the execution of the subsequent processing is waited (steps S13 to S15). The UP / DOWN key and the SET key are input through the operation unit 14.
[0042]
When the ALL ERASE item is selected, the system control microcomputer 13 executes a protection detection process (step S30).
Specifically, the system control microcomputer 13 executes the protection detection process shown in FIG. 5 and detects whether music data (track) set in the protection information is checked out according to the NetMD standard and is set in the disk d. .
[0043]
That is, as shown in FIG. 5, the system control microcomputer 13 sets the track number and requests reading of the track mode (step S31). That is, the system control microcomputer 13 sets the track number corresponding to one music data recorded on the disk d and requests the MD mechanism control microcomputer 21 to read the track mode of this music data.
[0044]
Then, the system control microcomputer 13 waits until the MD mechanism control microcomputer 21 controls the digital signal processing circuit 28 to finish reading the corresponding track mode from the UTOC information as shown in FIG. S32).
When the MD mechanical control microcomputer 21 finishes reading the track mode, the system control microcomputer 13 receives the supply of the track mode and stores information indicating the track protection state in its own memory (step S33).
Specifically, the system control microcomputer 13 stores the bit value of the most significant bit (d1; Write Protect) in the track mode shown in FIG. 3 in its own memory.
[0045]
The system control microcomputer 13 determines whether or not reading of the track mode for all tracks (for all music data) recorded on the disk d has been completed (step S34).
If the system control microcomputer 13 determines that reading for all tracks has not been completed, the system control microcomputer 13 returns the process to step S31 and repeatedly executes the processes of steps S31 to S34 described above.
On the other hand, when it is determined that the reading for all tracks has been completed, the system control microcomputer 13 finishes the protection detection process and returns the process to the data erasure process of FIG.
[0046]
When the process is returned to the data erasure process, the system control microcomputer 13 subsequently executes the erasure target selection process (step S40).
Specifically, the system control microcomputer 13 executes the erasure target selection process shown in FIG. 6 and receives the selection of the erasure target track by the user while presenting the erasure target.
[0047]
That is, as shown in FIG. 6, the system control microcomputer 13 determines whether or not the presence of a protected track is detected in the disk d by the above-described protection detection process (step S41).
If the system control microcomputer 13 determines that the protect track does not exist, the system control microcomputer 13 ends the erasure target selection process. That is, since music data checked out in accordance with the NetMD standard does not exist in the disk d, all music data (tracks) normally recorded are to be erased.
[0048]
On the other hand, if it is determined that a protected track exists, the system control microcomputer 13 displays on the display panel 15 that the protected track is to be erased (step S42). That is, music data checked out in accordance with the NetMD standard exists in the disk d, and only the checked-out music data is to be erased, so a message indicating that is displayed on the display panel 15.
The system control microcomputer 13 waits for subsequent processing until an UP / DOWN key for instructing an item change is input or a SET key for selecting an item is input (steps S43 and S44).
When the system control microcomputer 13 determines that the SET key has been input, the erasure target selection process ends. That is, as displayed on the display panel 15, all checked-out music data (tracks) are to be erased.
[0049]
On the other hand, if it is determined that the UP / DOWN key has been input, the system control microcomputer 13 displays on the display panel 15 that the object other than the protected track is to be erased (step S45). That is, the checked-out music data exists in the disk d, but except for these, only the normally recorded music data is to be erased, so a message indicating that is displayed on the display panel 15.
The system control microcomputer 13 waits for execution of subsequent processing until the UP / DOWN key is input or the SET key is input (steps S46 and S47).
When the system control microcomputer 13 determines that the SET key has been input, the erasure target selection process ends. That is, as displayed on the display panel 15, all music data (tracks) excluding the checked-out music data are to be erased.
[0050]
On the other hand, when determining that the UP / DOWN key has been input, the system control microcomputer 13 displays on the display panel 15 that all tracks are to be erased (step S48).
The system control microcomputer 13 waits for execution of subsequent processing until the UP / DOWN key is input or the SET key is input (steps S49 and S50).
When the system control microcomputer 13 determines that the UP / DOWN key has been input, the system control microcomputer 13 returns the process to step S42 and repeatedly executes the processes of steps S42 to S49 described above.
On the other hand, when it is determined that the SET key has been input, the system control microcomputer 13 ends the erasure target selection process. That is, as displayed on the display panel 15, all music data (tracks) in the disk d are to be erased.
When the erasure target selection process is completed, the system control microcomputer 13 returns the process to the data erasure process of FIG.
[0051]
When the process is returned to the data erasure process, the system control microcomputer 13 displays a message for confirming the ERASE on the display panel 15 (step S16), and waits for the ENTER key to be input on the operation unit 14 (step S16). Step S17).
[0052]
When the ENTER key is input, the system control microcomputer 13 executes ERASE (step S18). That is, the system control microcomputer 13 controls the MD mechanical control microcomputer 21 on the erasure target track selected by the user in the erasure target selection process shown in FIG. Erase from disk d.
[0053]
The system control microcomputer 13 determines whether or not the execution result returned from the MD mechanical control microcomputer 21 is information indicating successful erasure (step S19).
The system control microcomputer 13 displays a predetermined error message on the display panel 15 when the erasure is not successful (step S20). On the other hand, when the erasure is successful, a message indicating the completion of ERASE is displayed. Displayed on the panel 15 (step S21).
[0054]
4 to 6 described above, it is determined whether or not there is music data checked out in the disk d (a track on which protect information is set), and when there is music data that is checked out, The user can arbitrarily select a track to be erased.
That is, when all tracks are erased from the disk d, if there are protected tracks, the user can select all erase only the protect tracks, all normal tracks except the protect tracks, or all track erase. .
[0055]
Thereby, it is possible to prevent the checked-out track from being erased carelessly.
Further, even if it is not connected to the personal computer 3, the music data can be completely erased only by the recording / reproducing apparatus 1.
As a result, data to be erased can be appropriately selected and erased.
[0056]
In the above-described embodiment, a case has been described in which the track mode of each music data is read from the disk d and protection information is acquired after an instruction for editing (ALL ERASE) is given. However, the timing for reading the track mode and acquiring the protection information is arbitrary. For example, the protection information of each track may be acquired (the protected state is detected) at the timing of reading the UTOC information (for example, after power-on, after inserting the disc, after writing to the disc, and after various edits). .
Hereinafter, the operation of the recording / reproducing apparatus 1 that acquires the protection information when the UTOC information is read will be briefly described with reference to FIG. FIG. 7 is a flowchart for explaining data erasure processing according to another embodiment of the present invention. Note that this data erasing process is automatically started after power-on or disc insertion, for example.
[0057]
First, the system control microcomputer 13 controls the MD mechanism control microcomputer 21 and waits until reading of UTOC information from the disk d is completed (step S51). When reading is completed, the read UTOC information is stored in its own memory. Store (step S52).
The system control microcomputer 13 executes protection detection processing (step S30). That is, the system control microcomputer 13 executes the protection detection process shown in FIG. 5 before editing (all erasure; ALL ERASE) is instructed.
[0058]
When the protect detection process is completed, the system control microcomputer 13 waits for the subsequent process to be executed until the TRACK EDIT key is input (step S53). Then, when the TRACK EDIT key is input, it is determined whether or not the reproduction operation or the recording operation is stopped and the data can be written to the disk d (step S54).
The system control microcomputer 13 returns the process to step S53 when it is not stopped and is not in a state where writing is possible.
[0059]
On the other hand, when the system is stopped and writing is possible, the system control microcomputer 13 inputs the UP / DOWN key on the operation unit 14 and selects the ALL ERASE item with the SET key. Then, the execution of the subsequent process is waited (steps S55 to S57).
When the ALL ERASE item is selected, the system control microcomputer 13 executes an erasure target selection process (step S40). That is, the system control microcomputer 13 executes the erasure target selection process shown in FIG.
[0060]
When the erasing target selection processing is completed, the system control microcomputer 13 displays a message for confirming ERASE on the display panel 15 (step S58), and waits for the ENTER key to be input on the operation unit 14 (step S58). S59).
When the ENTER key is input, the system control microcomputer 13 executes ERASE (step S60). That is, the system control microcomputer 13 controls the MD mechanical control microcomputer 21 on the erasure target track selected by the user in the erasure target selection process shown in FIG. Erase from disk d.
[0061]
The system control microcomputer 13 determines whether or not the execution result returned from the MD mechanical control microcomputer 21 is information indicating successful erasure (step S61).
The system control microcomputer 13 displays a predetermined error message on the display panel 15 when the erasure is not successful (step S62). On the other hand, when the erasure is successful, a message indicating the completion of ERASE is displayed. The information is displayed on the panel 15 (step S63).
[0062]
The presence or absence of checked-out music data is also determined in advance by the above-described data erasing process shown in FIG. 7 and the track to be erased is used when the checked-out music data exists in the disc. The user can select arbitrarily.
That is, when there is a protected track, the user can select all erasure of only the protected track, all erasure of only normal tracks excluding the protected track, or erasure of all tracks.
[0063]
Thereby, it is possible to prevent the checked-out track from being erased carelessly.
Further, even if it is not connected to the personal computer 3, the music data can be completely erased only by the recording / reproducing apparatus 1.
As a result, data to be erased can be appropriately selected and erased.
[0064]
In the above embodiment, when all the music data in the disk d is erased and there is checked out music data, the protected track, the track excluding the protected track, or all the tracks are The case where the user selects each time has been described. However, when the content to be selected is determined in advance, the target track may be automatically deleted by setting the selected content in the recording / reproducing apparatus 1.
For example, a user who has decided not to delete a protected track sets a track other than the protected track in the recording / reproducing apparatus 1 as a selection content. In this case, when the checked-out music data exists in the disk d, tracks other than the protected track are automatically selected and deleted.
[0065]
In the above embodiment, the recording / reproducing apparatus corresponding to the NetMD standard has been described. However, the recording / reproducing apparatus not corresponding to the NetMD standard can be appropriately applied. Moreover, although the case where music data was recorded on the disk d which consists of MD was demonstrated, the recording medium of the object which records music data etc. is not restricted to MD, and is arbitrary.
For example, music data or the like may be recorded on a recording medium such as MO (Magneto-Optical disk), DVD-RAM (Digital Versatile Disk-RAM), etc., and SmartMedia (registered trademark), Memorytech (registered) Music data or the like may be recorded on a recording medium such as a trademark.
Furthermore, the data to be recorded on the recording medium is not limited to music data, but may be video data or the like.
[0066]
In the above embodiment, the case has been described in which whether or not the music data is checked out is determined based on the value of the write protect (d1 in the track mode shown in FIG. 3). However, the present invention is not limited to this. is not. That is, it is only necessary to determine whether or not the music data is checked out, and the method is arbitrary. Alternatively, the recording mode (track modes d5, d6, d7 shown in FIG. 3) (ATRAC Stereo, ATRAC3 LP2 Stereo, ATRAC3 LP4 Stereo, etc.) may be used as a reference.
[0067]
In the above-described embodiment, the recording / reproducing apparatus 1 and the personal computer 3 each have a USB interface, and the audio system in which the recording / reproducing apparatus 1 and the personal computer 3 are connected via the USB cable C has been described. . However, the interfaces provided in the recording / reproducing apparatus 1 and the personal computer 3 are not limited to USB and are arbitrary. For example, an interface such as IEEE 1394 may be used, and the recording / reproducing apparatus 1 and the personal computer 3 may be connected via an IEEE 1394 cable.
[0068]
【The invention's effect】
As described above, according to the present invention, data to be erased can be appropriately selected and erased.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of the configuration of a system including a recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic diagram for explaining the structure of UTOC information.
FIG. 3 is a schematic diagram for explaining a data structure of a track mode in UTOC information.
FIG. 4 is a flowchart for explaining data erasure processing according to the embodiment of the present invention;
FIG. 5 is a flowchart for explaining protection detection processing according to the embodiment of the present invention;
FIG. 6 is a flowchart for explaining erasure target selection processing according to the embodiment of the present invention;
FIG. 7 is a flowchart for explaining data erasure processing according to another embodiment of the present invention;
FIG. 8 is a block diagram for explaining an example of a configuration of a conventional recording / reproducing apparatus.
FIG. 9 is a flowchart for explaining data erasure processing executed in a conventional recording / reproducing apparatus.
[Explanation of symbols]
1 Recording and playback device
11 Security circuit
12 Security control microcomputer
13 System control microcomputer
14 Operation unit
15 Display panel
16 MD mechanical unit
21 MD mechanical control microcomputer
22 Head driver
23 Recording head
24 spindle motor
25 Optical pickup
26 Feed motor
27 RF amplifier
28 Digital signal processing circuit
29 Buffer memory
3 PC
C USB cable

Claims (4)

The data set in more protected state for data transfer with the copyright protection from an external device using a recording medium capable of recording, a recording and reproducing apparatus for recording and reproducing data,
Instruction means for instructing batch erasure of a plurality of data recorded on the recording medium;
When batch erasure is instructed by the instruction means, detection means for detecting the protection state of each data;
When at least one protected state data is detected by the detecting means, at least data other than the protected state, protected data, and all data regardless of the protected state are selected as erasable objects. Presenting means to present;
Selecting means for selecting one of the erasure targets presented by the presenting means;
Erasing means for erasing data to be erased selected by the selecting means from a recording medium;
A recording / reproducing apparatus comprising: The detecting means detects a protection state of each data according to information included in a track mode that defines an attribute of each data recorded on the recording medium;
The recording / reproducing apparatus according to claim 1. A recording / reproducing apparatus for recording / reproducing music data using a recording medium capable of recording music data to be checked out by prescribed data transfer,
Instruction means for instructing batch erasure of all music data recorded on the recording medium;
When batch erasure is instructed by the instruction means, detection means for detecting whether or not the music data checked out is included in all music data;
When at least one piece of checked-out music data is detected by the detecting means, at least all of the music data except the checked-out music data, the checked-out music data, and all of the data regardless of the check-out Presenting means for presenting music data as selectable erasure targets;
Selecting means for selecting one of the erasure targets presented by the presenting means;
Erasure means for erasing music data to be erased selected by the selection means from a recording medium;
A recording / reproducing apparatus comprising: Using a recording medium capable of recording the music data to be set to a protect state in the data transfer with the copyright protection from an external device, a data erasing method in a recording and reproducing apparatus for recording and reproducing music data,
An instruction step for instructing batch erasure of all music data recorded on the recording medium;
When batch erasure is instructed in the instructing step, a detecting step for detecting a protected state of each music data;
If at least one protected music data is detected in the detection step, at least music data other than the protected state, protected music data, and all music data regardless of the protected state are selected. A presentation step to present as possible erasure targets;
A selection step of selecting any of the deletion targets presented in the presenting step;
An erasing step of erasing the music data to be erased selected in the selection step from a recording medium;
A data erasing method comprising:

Images