JP2001297568A - Index device, recording medium with rfid for storing index used for this device, and its rfid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain information about a program recorded in a recording medium without inserting a recording medium into a recording and reproducing device and without contacting the recording medium to the recording and reproducing device. SOLUTION: A storage means provided in a recording and reproducing device stores program information transmitted with the program, a RFID 14 provided in the recording medium 11 has a coil 16 and an IC chip 17. a write-in/read-out means provided in the recording and reproducing device writes information about the program recorded in the recording medium out of the program information stored in the storage means in the IC chip without contacting, also reads out the program information stored in the IC chip without contacting. The program information read out from the IC chip by the write-in/read-out means is displayed on a display section. Also, the write-in/read-out means has a transmitting and receiving antenna transmitting a radio wave to the coil and receiving a radio wave from the coil, and the write-in/read-out means can read information written in the IC chip in a state in which the recording medium is separated from the recording and reproducing device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium for recording a program transmitted from a broadcasting station, and a recording / reproducing apparatus for recording and reproducing a program on and from the recording medium. Device for displaying information related to a selected program, and RFI for storing a table of contents used in the device
It relates to a recording medium with D and its RFID.

[0002]

2. Description of the Related Art Conventionally, as an apparatus of this type, information relating to a program transmitted from a predetermined station providing various programs is stored in a storage means, and a recording for specifying a program to be recorded on a predetermined recording medium is performed. Based on the information, the program information detecting means refers to the program information in the storage means and detects program information corresponding to the program to be recorded from the program information, and the program information and the cue information of the program are used as index information. An automatic index device configured to be written in a predetermined area of a recording medium by index information writing means is disclosed (JP-A-7-297794). In this automatic indexing apparatus, recording media include a video tape, a cassette tape for recording, an optical disk, a floppy disk, and the like. In the automatic index apparatus configured as described above, a video tape (recording medium) is inserted into a recording / reproducing apparatus (video deck), and a program is recorded on the video tape. Can be created. This index information is written in the index information area at the beginning of the video tape.

[0003]

However, in the above-mentioned automatic index apparatus disclosed in Japanese Patent Application Laid-Open No. Hei 7-297794, index information is written in an index information area at the beginning of a video tape. In order to use the method, the video tape must be inserted into the recording / reproducing apparatus and the video tape must be rewound, so that a troublesome operation is required. A DVD-RAM (Digital Versatile Disc-Rando) is used as a recording medium.
m Access Memory), DVD-R (DVD-Recordable),
DVD-RW (DVD-ReWritable) CD-R (Compact Di
sc-Recordable), CD-RW (Compact Disc-ReWritab)
When an optical disk such as le) is used, a rewinding operation such as a video tape is not required, but the optical disk has to be inserted into a recording / reproducing apparatus, which has a relatively troublesome problem.

[0004] An object of the present invention is to provide an index capable of promptly knowing information about a program recorded on a recording medium without inserting the recording medium into the recording / reproducing apparatus and without bringing the recording medium into contact with the recording / reproducing apparatus. It is to provide a device. Another object of the present invention is to enable information relating to a recorded program to be stored in the RFID, and to be stored in the RFID without being inserted into the recording / reproducing device and without being brought into contact with the recording / reproducing device. An object of the present invention is to provide a recording medium with a table of contents storing RFID which can read out program information. Still another object of the present invention is to store information on a program recorded on a recording medium, and without inserting the program into a recording / reproducing device and without contacting the recording / reproducing device. An object of the present invention is to provide a table-of-contents storage RFID capable of reading information quickly.

[0005]

The invention according to claim 1 is
As shown in FIGS. 1, 3 and 4, a recording / reproducing device 12 for receiving a program transmitted from a predetermined station providing various programs and recording and reproducing the program on a recording medium 11; A storage means 13 provided in the playback device 12 for storing program information transmitted together with the program; a coil 16 provided in the recording medium 11 for resonating with radio waves of a predetermined frequency; and IC chips connected to both ends of the coil 16 And information on a program recorded on the recording medium 11 among program information stored in the storage means 13 provided in the recording / reproducing device 12 and written to the IC chip 17 in a non-contact manner and stored in the IC chip 17. Writing / reading means 20 for reading stored program information in a non-contact manner, and display unit 2 for displaying program information read from IC chip 17 by writing / reading means 20 An indexing device comprising: a writing / reading means 20 having a transmitting / receiving antenna 21 for transmitting a radio wave toward the coil 16 and receiving a radio wave from the coil 16; The writing / reading means 20 is configured to be able to read information written in the IC chip 17 while being away from the IC chip 17.

In the index apparatus according to the first aspect, the recording medium 11 is first stored in the recording / reproducing apparatus 12, and in this state, a predetermined station is selected and a predetermined program is recorded on the recording medium 11. Since the program information is transmitted together with the program from the predetermined station, the storage means 13 stores the program information. At the same time that the recording on the recording medium 11 is completed, the writing / reading unit 20 writes the program information on the program recorded on the recording medium 11 among the program information stored in the storage unit 13 into the IC chip 17 of the RFID 14. On the other hand, from among a large number of recorded recording media 11,
To find a recording medium 11 on which a program to be reproduced is recorded, without inserting the recording medium 11 into the recording / reproducing device 12,
The coil 16 of the RFID 14 is made to face the transmitting / receiving antenna 21 of the writing / reading means 20. Thereby, the writing / reading means 20 reads out the program information stored in the IC chip 17 of the RFID 14 and displays it on the display unit 28. As a result,
Since the program information recorded on each recording medium 11 can be known without inserting the recording medium 11 into the recording / reproducing device 12 and without bringing the recording medium 11 into contact with the recording / reproducing device 12, a desired program Can be promptly searched for the recording medium 11 on which is recorded.

A second aspect of the present invention is a recording medium with a table-of-contents storing RFID for use in an index device as shown in FIGS.
According to a third aspect of the present invention, as shown in FIGS. 1 to 4, the recording medium 11 of the index device according to the first aspect is described.
The RFID 14 is provided to the user. In the recording medium or the RFID according to claim 2 or 3, the recording medium 1
1 information of the program recorded in
The recording medium 11 can be stored in the chip 17.
The program information stored in the IC chip 17 can be quickly read out without inserting the program information into the recording / reproducing device 12 and without making the recording / reproducing device 12 contact.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. As shown in FIGS. 1 to 4, an index device receives a program transmitted from a broadcast station and records and reproduces the program on a recording medium 11.
2, a storage unit 13 provided in the recording / reproducing apparatus 12 for storing program information transmitted together with the program, and an RFID 14 (Radio Frequency Identification) provided on the recording medium 11 and having the coil 16 and the IC chip 17. . As shown in FIGS. 1 and 2, a recording medium 11 is formed on a disk main body 11a made of polycarbonate, and on a surface of the disk main body 11a around the center hole 11b at a predetermined interval from an edge of a center hole 11b of the disk main body 11a. The formed recording film 11c, a reflective film 11d formed by evaporating aluminum or gold on the recording film 11c, and a protective film 11e made of an ultraviolet curable resin formed on the surface of the reflective film 11d Have. Recording medium 1
Reference numeral 1 denotes a DVD-RAM (hereinafter, referred to as a DVD) capable of recording audio and video and reproducing the recorded audio and the like. Audio and video are formed as pits on the recording film 11c by laser light emitted from the back side of the disk body 11a, and the pits of the recording film 11c are analyzed and reproduced by the laser light. The recording medium is not DVD-RAM, but DVD-R, DVD
A write-once or rewritable optical disk such as RW, CD-R or CD-RW, a video tape, a cassette tape for recording, or the like may be used.

A broadcasting station is a predetermined station that provides various programs on radio waves, and the program information includes a title of the program, names of performers, a summary of program contents, and the like. Recording / reproducing device 1
Reference numeral 2 denotes a deck for recording a program on the DVD 11 and reproducing the recorded program (FIG. 3). The deck 12 is provided with a tray 12a which is provided so as to be able to protrude and retract from the deck 12, and on which a DVD 11 is mounted, and a rectangular insertion hole 12b which can be stored in the deck 12 with the DVD 11 mounted on the tray 12a. The coil 16 of the RFID 14 is
It is formed by winding around the center hole 11b of FIG. 1A one or more times, and is configured to resonate with a radio wave of a predetermined frequency (FIGS. 1 and 2). The IC chip 17 is connected to both ends of the coil 16. The coil 16 and the IC chip 17 are provided inside the disk main body 11a. Specifically, the coil 16 is formed in a spiral shape by removing an unnecessary portion of a conductive material such as an aluminum foil or a copper foil laminated on the insulating base sheet 18 by an etching method, a punching method, or the like. 16 between the inner edge of the center hole 11b and the hole edge of the center hole 11b
Is 0.1 mm or more, and the interval B between the outer edge of the coil 16 and the inner edge of the reflection film 11d is formed to be 2.5 mm or more. The IC chip 17 is mounted on the insulating base sheet 18 while being connected to both ends of the coil 16, and is formed in a state where the insulating base sheet 18 on which the coil 16 and the IC chip 17 are mounted is mounted on a mold. The disk body 11
a is formed. As a result, the RFID 14 has the center hole 11
disc body 1 between the hole edge of b and the inner edge of reflective film 11d
1a is provided inside. The RFID may be provided not on the inside of the disk body but on the surface of the disk body.

As shown in FIG. 4, an IC chip 17 includes a power supply circuit 17a, a radio frequency (RF) circuit 17b, a modulation circuit 17c, a demodulation circuit 17d, a CPU 17e,
A memory 17f that is connected to the PU 17e and stores information on programs recorded on the DVD 11. The power supply circuit 17a has a built-in capacitor (not shown), and this capacitor forms a resonance circuit with the coil 16. This capacitor is charged with electric power generated by electromagnetic induction when the coil 16 receives a radio wave having a specific resonance frequency. The power supply circuit 17a rectifies and stabilizes this electric power, and
U17e to activate the IC chip 17. The memory 17f includes a ROM (read only memory) and a RAM (ramd
om access memory) and EEPROM (electrically e
rasablepogramable read only memory), CPU
Under the control of 17e, data is written in response to a write command by radio data communication from the write / read means 20 described later, and the data is stored in response to a read command from the write / read means 20. The read data is read.

A conductive film 11f is formed on the surface of the protective film 11e (FIG. 1). This conductive film 11f is attached to the surface of the protective layer 11e via an adhesive layer (not shown). The conductive film may be provided on the surface of the protective film by an evaporation method, or may be formed by applying a paint containing conductive flakes to the surface of the protective film. When the conductive film is formed of an aluminum foil, a copper foil, a silver film, or the like, the thickness is 5 μm to 30 μm.
m, and a preferable thickness when the conductive film is formed by an evaporation method is 0.05 μm to 0.50 μm.
It is in the range of μm. When a conductive film is formed by applying a paint containing conductive flakes, the thickness of the conductive film is 0.1 cm in width and 1 cm in length when the electric resistance is 0.1 cm in accordance with the specific resistance.
It is selected so as to be 25Ω or less. Note that the conductive film may be formed between the reflective film and the protective film instead of the surface of the protective film, or the protective film itself may be formed of the conductive film.

The deck 12 is provided with writing / reading means 20 (FIG. 4). The writing / reading means 20 includes a transmission / reception antenna 21, a radio frequency (RF) circuit 22 connected to the transmission / reception antenna 21, and an AC power supply (not shown).
, A modulation circuit 24, a demodulation circuit 25, and a CPU 26. Transmitting / receiving antenna 21
Is a first provided opposite the tray 12a of the deck 12.
It comprises an antenna 21a and a second antenna 21b facing the front of the deck 12. The first antenna 21a is the deck 12
The radio wave transmitted from the coil 16 of the RFID 14 of the DVD 11 inserted in the DVD 11 can be transmitted and received.
Is the RFI of the DVD 11 approached to the front of the deck 12
The radio wave from the coil 16 of D14 can be transmitted and received. The writing / reading means 20 transmits a radio wave of a specific frequency to the coil 16 of the RFID 14 via the transmission / reception antenna 21 to activate the IC chip 17 and writes / reads data to / from the memory 17f of the chip 17. That is, of the program information stored in the storage means 13,
Is stored in the memory 17f of the IC chip 17 in a non-contact manner, and the program information stored in the memory 17f is read out in a non-contact manner.

Further, a display section 28 for displaying program information read from the memory 17f of the IC chip 17 is connected to the CPU 27 of the writing / reading means 20, and the display section 28 is provided on the front of the deck 12. The display unit 28 displays the program information (program information stored in the memory 17f of the IC chip 17 of the DVD 11 stored in the deck 12) received by the first antenna 21a, and the second antenna 21b. Received the program information (I of the DVD 11 facing the front of the deck 12 at a predetermined distance or less from the deck 12).
And a second display unit 28b for displaying the program information stored in the memory 17f of the C chip 17. The display unit may be a display or monitor connected to the deck.

A method of using the index device thus configured will be described. First, the DVD 11 is placed on the tray 12a of the deck 12, and in this state, the tray 12a is
1 together with the deck 1. When a predetermined station is selected and a recording switch (not shown) is pressed in this state, the deck 12 receives the program provided by the broadcasting station and records the program on the DVD 11. On the other hand, since the broadcast station transmits the program information together with the program, the storage means 13 provided in the deck 12 stores the program information. When the recording on the DVD 11 is completed and the rotation of the DVD 11 is stopped, the writing / reading means 20
Of the program recorded on the DVD 11 out of the program information stored in the IC chip 17 in the memory 17f of the IC chip 17. More specifically, the writing / reading means 20 transmits a signal from the first antenna 21a of the transmitting / receiving antenna 21 to the R / R of the DVD 11.
The signal of the program information is transmitted to the coil 16 of the FID 14 on a radio wave of a specific frequency. The signal of the program information is a binarized digital signal. A digital signal emitted from the writing / reading means 20 is emitted from a signal generator (not shown) and is modulated by a modulation circuit 24. The RF circuit 22 amplifies the modulated signal to obtain the first antenna 2
1a. The modulation includes, for example, ASK (amplitude modulation), FSK (frequency modulation), or PSK (phase modulation).

The radio wave including the transmitted program information signal is D
The power is received by the coil 16 of the RFID 14 of the VD 11 and the power generated by the electromagnetic induction is charged in the capacitor of the power supply circuit 17a by this reception. At this time, the conductive film 11f formed on the surface of the protective film 11e, together with the reflective film 11d, has an effect on a resonance circuit including the coil 16 and the capacitor as a circuit having a small electric resistance. Conductive film 11
Although a current flows through f due to mutual induction, at high frequencies, even if the resistance of the conductive film 11f is low, the current flowing due to the influence of the self-inductance of the conductive film 11f does not increase. Will be higher. For this reason, the Q value of the resonance circuit is increased by the conductive film 11f, and the power supply circuit 17a rectifies and stabilizes the power, and
It is supplied to the PU 17e to activate the IC chip 17. Next, the RF circuit 17b of the IC chip 17 fetches only the signal necessary for demodulation, and the demodulation circuit 17d reproduces the original digital program information signal and stores it in the memory 17f. As described above, various programs are recorded on the plurality of DVDs 11, and the program information is stored in the memory 17f of the IC chip 17 of each DVD 11.

On the other hand, if the number of recorded DVDs 11 increases, the title of the program or the like may be forgotten to be written on the DVD 11 or its case (not shown), or since many programs are recorded on one DVD 11, In some cases, it may not be possible to enter the title of the document. In such a case,
To find the DVD 11 that has recorded the program you want to play,
D11 is opposed one by one to the front of the deck 12 at a predetermined distance or less from the deck 12, ie, the coil 1 of the RFID 14
6 is opposed to the transmitting / receiving antenna 21 of the writing / reading means 20 so that the writing / reading means 20
The program information stored in the memory 17f is read and displayed on the second display unit 28b. Specifically, the writing / reading means 20 transmits the RFID 1 of the DVD 11 from the second antenna 21b.
The interrogation signal is transmitted on the radio wave of a specific frequency toward the coil 16 of the fourth embodiment. This interrogation signal is a binary digital signal. The digital signal emitted from the writing / reading means 20 is emitted from a signal generator (not shown), is modulated by the modulation circuit 24, is amplified by the RF circuit 22, and is transmitted from the second antenna 21b.

The radio wave including the transmitted interrogation signal is DVD1
The power is generated by electromagnetic induction in the capacitor of the power supply circuit 17a. At this time, similarly to the above, the resonance circuit constituted by the coil 16 and the capacitor forms the conductive film 11f.
The power supply circuit 17a rectifies and stabilizes the power, supplies it to the CPU 17e, and activates the IC chip 17. Next, the RF circuit 17b of the IC chip 17 fetches only the signal necessary for demodulation, and the demodulation circuit 17d reproduces the original digital signal interrogation signal and reads out the program information stored in the memory 17f. The data of this program information is binarized, modulated by the modulation circuit 17c of the IC chip 17, amplified by the RF circuit 17b, and then transmitted from the coil 16. The transmitted data is received by the writing / reading means 20 via the second antenna 21b, and only the signal necessary for demodulation is fetched by the RF circuit 22 of the writing / reading means 20. The signal of the program information of the signal is reproduced and displayed on the second display unit 28b. As a result, even if the DVD 11 is not inserted into the deck 12 and the DVD 11 is not brought into contact with the deck 12,
Since the program information recorded on the DVD 11 can be known, the DVD 11 on which the desired program has been recorded can be quickly found. Note that the D inserted in the deck 12
The program information stored in the memory 17 f of the IC chip 17 of the VD 11 is transmitted to the first display unit 28 a via the coil 16 of the RFID 14 and the first antenna 21 a of the writing / reading unit 20.
Will be displayed.

[0018]

As described above, according to the present invention, when the recording / reproducing apparatus finishes recording on the recording medium, the writing / reading is completed.
The reading means reads the program information relating to the program recorded on the recording medium among the program information stored in the storage means, by using an RFID IC.
The writing / reading means writes the data on the chip, and makes the recording medium face the recording / reproducing device, that is, the coil of the RFID faces the transmitting / receiving antenna of the writing / reading means. Is read out and displayed on the display unit. As a result, the program information recorded on each recording medium can be known without inserting the recording medium into the recording / reproducing apparatus and without bringing the recording medium into contact with the recording / reproducing apparatus. The searched recording medium can be quickly searched.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a DVD including an index device according to a first embodiment of the present invention, taken along line CC of FIG. 2;

FIG. 2 is a plan view of the DVD.

FIG. 3 is a front view of a deck that records and reproduces a program on the DVD.

FIG. 4 is a block diagram including an RFID provided on a DVD facing the front of the deck and a writing / reading means provided on the deck.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 DVD (recording medium) 12 deck (recording / reproducing apparatus) 13 storage means 14 RFID 16 coil 17 IC chip 20 writing / reading means 21 transmitting / receiving antenna 28 display part

Claims (3)

[Claims] A recording / reproducing device (12) for receiving a program transmitted from a predetermined station that provides various programs and recording and reproducing the program on a recording medium (11); A storage means (13) provided in the storage medium (12) for storing program information transmitted together with the program, a coil (16) provided in the recording medium (11) and resonating with radio waves of a predetermined frequency, and the coil (16) I connected to both ends of
An RFID (14) having a C chip (17); and a program recorded on the recording medium (11) among program information stored in the storage means (13) provided in the recording / reproducing device (12). Writing / reading means (20) for writing information on the IC chip (17) in a non-contact manner and reading program information stored in the IC chip (17) in a non-contact manner; A display unit (28) for displaying the program information read from the IC chip (17) by means of (20), wherein the writing / reading means (20) faces the coil (16). A transmitting / receiving antenna (21) for transmitting a radio wave and receiving a radio wave from the coil (16), and wherein the recording / reproducing device (12) is away from the recording / reproducing device (12). An index characterized in that the reading means (20) is configured to be able to read the program information written on the IC chip (17). Location. 2. A recording medium with an RFID for table of contents storage used in the index device according to claim 1. 3. An RFID provided on a recording medium (11) of the index device according to claim 1.