JP3693442B2 - DVD copyright fee charging method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a DVD copyright fee charging method for charging a copyright fee for information recorded on a DVD (digital video disc) when reproducing or copying the information. The present invention relates to a DVD copyright fee charging method capable of suppressing a so-called pirate board.
[0002]
[Prior art]
In general, since high-quality video, audio, and data can be recorded on a DVD, it is necessary to protect the copyright of the video, audio, and data from illegal copies (so-called pirated boards). As a copyright protection method, the copyright management information is scrambled in advance and recorded on the disc, and a part of the copyright management information is used as a copy protection key, so that playback is performed when the player properly reads the copy protection key. Or digital output. On the other hand, if the disc cannot be read normally, it is considered that the disc is illegally copied and no reproduction is performed, or reproduction is performed but digital output is not performed.
[0003]
[Problems to be solved by the invention]
By the way, it is better that the copy protection key recorded in advance on the DVD, that is, the so-called “encryption key”, to be charged by the copyright holder when the user plays the DVD, is easy to handle. Also, if a special “encryption key” is issued every time the disk is manufactured, the process of confirming the validity of the “encryption key” becomes complicated and difficult, and management becomes very troublesome.
[0004]
In view of the above-described conventional problems, the present invention can be charged with a simple copy protection key, and can be used to prevent illegally manufactured copies (so-called pirated discs). An object is to provide a billing method.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides
Audio data Has a data area Recorded in units of sectors consisting of user data, Sub header And the ISRC code related to the formatted data and the audio data, Copy prohibition code and When the copyright information including the copy permission count information is recorded on a DVD as a DVD format, and the recorded DVD is reproduced by a reproduction device on the user side and copied to another recording medium by the recording device on the user side. A DVD copyright fee charging method for charging information to be copied,
Transmitting at least the ISRC code of the copyright information from at least one of the playback device and the recording device to a host device connected via the Internet;
Charging the user for the copy if the host device permits the copy based on the copyright information;
When the copy is performed from the playback device on the user side to the recording device on the user side by a predetermined serial interface, the copy permission number information of the copyright information of the DVD is Will be erased and the copy prohibition code A step that is copied to copy prohibited,
A method for charging a copyright fee for a DVD comprising:
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a format for realizing an embodiment of a DVD copyright fee charging method according to the present invention, and FIG. 2 is an explanatory diagram showing details of the copyright management information of FIG.
[0011]
FIG. 1 shows a recording format of a lead-in portion of a DVD-audio as an example of a disc. The area of the disk is roughly composed of a PCA (post-cutting area) part, a lead-in part, a data part, and a lead-out part from the inner periphery to the outer periphery, and one sector is composed of 2048 bytes. Yes. The control area of the lead-in portion is composed of 16 sectors “1” to “16”, physical format information is recorded in sector “1”, disk manufacturing information is recorded in sector “2”, and sector “3”. And “4” records copyright information as shown in detail in FIG.
[0012]
A 4-bit copy prohibition code is recorded in the first byte of sectors “3” and “4”. In the copy prohibition code, “1000” represents “copy prohibited”, “1100” represents “copy allowed”, and “1010” represents “one copy allowed” (others are reserved). The 2nd to 18th bytes are an ISRC (International Standard Recording Code) code indicating the music (program source) and an SID (Source ID) code indicating the disc producer. In the second byte, an 8-bit ISRC code and a scrambled synchronization signal for the SID code are recorded, and in the third to tenth bytes, a 60-bit ISRC code is scrambled and recorded. The SID code for 8 characters is scrambled and recorded.
[0013]
Similarly, an ISRC code and SID code for one title are recorded in 16 bytes, and a total of 99 titles are recorded. Note that instead of scrambling both the ISRC code and the SID code, only the SID code may be scrambled. In addition, "IFPIIL 231-7" shown as an example of the SID code in FIG. “L231-7” indicates the IFPI mastering code of Victor Company of Japan. The ISRC code is composed of 12 characters, the first to fifth characters are composed of 6 bits, and the sixth to twelfth characters are composed of 4 bits (6 bits are blank).
[0014]
FIG. 3 shows another example format. In this format, a variable length copyright management information (CMI) area of 16 bytes (128 bits) to 188 bytes (1504 bits) is provided in the lead-in portion of the disk, not in the sector. And in this CMI area, for example, 64-bit disc manufacturing date data, 52-bit factory code, 8-bit scramble synchronization signal, 60-bit ISRC code, 8-byte SID code, and copy permission A 4-bit CGMCAPS (Copy Generation Management Control Audio Protection System) code indicating the number of times is recorded. This data is repeatedly recorded several times, and the ISRC code and SID code are scrambled and recorded. Further, this CMI area is recorded by manufacturing the control data area of the lead-in portion as a RAM area in advance.
[0015]
FIG. 4 shows still another example format. In this format, a variable length CMI area of 16 bytes (128 bits) to 188 bytes (1504 bits) is provided in the lead-in portion of the disk as in the case shown in FIG. 3, and an 8-byte SID code is provided in this CMI area. In order to scramble, a dummy disc production date is arranged after the SID code and the scramble is included or recorded, or only the SID code is scrambled and recorded. Similarly, the CMI area is manufactured and recorded in advance as a RAM area. Here, the control data scrambling method may be the same as the method of scrambling the program source recorded in the data portion of the disc, or may be another method.
[0016]
FIG. 5 is a block diagram showing a main apparatus for realizing an embodiment of a DVD copyright fee charging method according to the present invention, FIG. 6 is a block diagram showing an encoder for producing DVD-audio, and FIG. 6 is an explanatory diagram showing sampling periods and data strings of the two A / D converters of FIG. 6, FIG. 8 is an explanatory diagram showing user data packed by the packing encoder of FIG. 6, and FIG. 9 is in the recording / reproducing apparatus of FIG. FIG. 10 is an explanatory diagram showing a data string decoded by the decoder of FIG. 9 and a sampling period, FIG. 11 is a block diagram showing in detail the encoder in the recording / reproducing apparatus of FIG. 5, and FIG. 5 is a block diagram showing in detail the converter of FIG. 5, FIG. 13 is a flowchart for explaining the processing of the host of FIG. 5 during copying, and FIG. 14 is the host of FIG. 5 during reproduction Flow chart for describing processing, Fig. 15 is a flowchart for explaining the processing of the host of FIG. 5 at the time of playback / copy.
[0017]
In FIG. 5, the analog information of the copyright owner is legally encoded by the encoder ENC 2 and supplied to the user via the recording medium 401. The user can have the recording / reproducing apparatuses 500a and 500b having the same configuration, and the authentic user can start from the authentic medium 401 using the recording / reproducing apparatus 500a as the copy source and the recording / reproducing apparatus 500b as the copy destination as described later. The converters 200a and 200b shown in detail in FIG. 12 can be directly connected to perform copying or reproduction only.
[0018]
As recording / reproducing apparatuses 500a and 500b, for example, DVC (Digital Video Camcorder), D-VHS- capable of recording a bitstream as encoded such as compression using a new VHS format based on VHS video as a standard mode. A VTR can be used. Each of the recording / reproducing apparatuses 500a and 500b includes a decoder DEC2 detailed in FIG. 9 and an encoder ENC2 ′ detailed in FIG.
[0019]
When copying using the recording / reproducing apparatus 500a as the copy source and the recording / reproducing apparatus 500b as the copy destination, or when reproducing using the recording / reproducing apparatus 500a or 500b, the converters 200a and 200b, the IEEE 1394 host adapter 604, and Copyright collection through a communication line such as the Internet using a personal computer (hereinafter referred to as a personal computer) 603 having a personal computer main body 605, a card reader 606 of an IC card type and a card type electronic money 607 of “EMV” standard. A recording permission request signal and a reproduction permission request signal are transmitted to the host device 608 on the side.
[0020]
Next, the configuration of the encoder ENC2 for producing DVD-audio will be described with reference to FIG. An analog signal such as an audio signal is input to the input terminal 1, and this input signal is applied to the A / D converters 2 and 3. A relatively low sampling frequency, for example, 48 kHz sampling clock f and a relatively high sampling frequency, for example, 96 kHz sampling clock 2 f are applied to the A / D converters 2 and 3 from the clock generator 5.
[0021]
As shown in FIG. 7, the A / D converter 2 samples the input signal at a cycle of a sampling clock f of 48 kHz,
xa1, xa2, xa3, ..., xai, ...
To a relatively low quality digital data string xai. Further, as shown in FIG. 7, the A / D converter 3 samples the input signal at a cycle of the sampling clock 2f of 96 kHz,
(Xb1, xc1), (xb2, xc2), (xb3, xc3,)
..., (xbi, xci,) ...
To a relatively high quality digital data string (xbi, xci,).
[0022]
Here, in the data string (xbi, xci), the sampling position of the data string xbi is the same as the data string xai at 48 kHz, and the sampling position of the data string xci is an intermediate position of the data string xai at 48 kHz. The sampling data is converted with a resolution of 24 bits, for example.
[0023]
The data string (xbi, xci) A / D converted by the A / D converter 3 is applied to the switch 4, and the data string at the same sampling position as the data string xai based on the 96 kHz sampling clock 2f from the clock generator 5. Only xbi is selected, and the data string xci at the intermediate sampling position of the data string xai is thinned out. The difference calculator 6 generates difference data Δi based on the sampling data xai A / D converted by the A / D converter 2 and the sampling data xbi selected by the switch 4.
xbi-xai = Δi
Is calculated as Here, the difference data Δi is 24 bits or less.
[0024]
The subsequent packing encoder 7 receives the data string xai A / D converted by the A / D converter 2, the difference data string Δi calculated by the difference calculator 6, and the copyright data from the copyright data supply unit 100 as shown in FIG. Are packed as user data, and the user data is output via an output terminal 8 to be recorded on a recording medium such as a DVD (digital video disc or digital versatile disc). To the transmission medium. The copyright data from the copyright data supply unit 100 can also be output as it is through the output terminal OUT3.
[0025]
In the example shown in FIG. 8, one user data is composed of a subheader, n sampling data xa1 to xan, and n difference data Δ1 to Δn, and when the user data is 2034 bytes as in a DVD. The data xa1 to xan and the difference data Δ1 to Δn are all 338 (= n), and the subheader is 6 bytes. In DVD, user data is called a packet, and a subheader is called a packet header.
[0026]
Next, the decoder DEC2 will be described with reference to FIG. User data input via the input terminal 9 is applied to the unpacking decoder 10 and can be output via the copyright data rewriting unit 30, the switch 21, and the digital output terminal (bitstream output terminal) 22. The unpacking decoder 10 separates the data string xai, the difference data string Δi, and the copyright data. The data string xai is applied to the adder 11 and the level control unit 118, and further applied to the adder 120 via the delay unit 122. The difference data sequence Δi is applied to the adder 11, and the copyright data is applied to the decryption unit 20 and the FM modulator 114.
[0027]
In the adder 11,
Δi + xai = xbi
Is calculated, and this data string xbi is applied to the interpolation processing circuit 12 and the switch 13. The number of bits of each data in the data string xbi is 24 bits. The interpolation processing circuit 12 interpolates the data string xci between them using a plurality of data of the data string xbi. For example, by using an upsampling method, the interpolation data string xci can be obtained by filling 0 data in each and passing through a low-pass filter. In the subsequent switch 13, the data strings xbi and xci are alternately selected based on the 96 kHz sampling clock 2f from the clock generator 14. Accordingly, the encoder ENC2 shown in FIG. 6 restores the data string (xbi, xci) A / D-converted at the sampling frequency of 96 kHz (see FIG. 10), and this data string (xbi, xci) passes through the delay unit 123. Applied to the adder 121.
[0028]
The output signal of the copyright data rewriting unit 30 is input to another unpacking decoder 10 ′, and the copyright data reproduced from the subheader is given to the FM modulator 114. In the FM modulator 114, the copyright data is modulated by a frequency of, for example, 5 kHz from the oscillator 115. Then, the modulated signal is spread by the spread modulator 116 using the spread code 117 so that it cannot be heard even if it is D / A converted, and its frequency spectrum is spread to a low level. Then, the level is controlled according to the level of the data string xbi. The modulated data is applied to the adder 121, and every other thinning out is applied to the adder 120 by the thinning circuit 119. Alternatively, the level control unit 118 controls the frequency spectrum level according to the frequency spectrum level of the data string xbi.
[0029]
The output data string xai of the delay device 122 is output through the digital output terminal 23 as it is. Further, the adder 120 embeds the modulation data from the thinning circuit 119 in the output data string xai of the delay unit 122, and this data string xai ′ is converted to D by the D / A converter 15 based on the sampling frequency f of 48 kHz. / A converted and output via the analog output terminal 17.
[0030]
The output data string (xbi, xci) of the delay unit 123 is output through the digital output terminal 24 as it is. Further, the adder 121 embeds the modulation data from the level control unit 118 in the output data string (xbi, xci) of the delay unit 122, and this data string (xbi, xci) ′ is generated by the D / A converter 16. D / A conversion is performed based on a sampling frequency 2 f of 96 kHz and output via the analog output terminal 18.
[0031]
Therefore, relatively low quality digital data xai that has been A / D converted at 48 kHz, compressed and recorded on the recording medium, and relatively high data that has been A / D converted at 96 kHz, recorded on the recording medium, and decoded. The quality digital data (xbi, xci) is not output as it is, but is output as digital data xai ′, (xbi, xci) ′ in which modulation data is embedded.
[0032]
In this embodiment, the bit stream transmitted through the medium and input through the input terminal 9 is output through the copyright data rewriting unit 30, the switch 21 and the bit stream output terminal 22 as it is. Is possible. The terminal 19 is connected to the personal computer 603 via the converter 200, and outputs a copy (recording) permission request signal and a reproduction permission request signal, and receives a copy (recording) permission signal and a reproduction permission signal. The decryption unit 20 turns on the switch 21 and controls the copyright data rewriting unit 30 through the terminal 19 based on the input / output signal and the copyright data from the unpacking decoder 10.
[0033]
In this embodiment, the personal identification number generator 125 is provided, and the personal identification number is output via the output terminal 126. Further, clocks f and 2f are output from the output terminals 23B and 24B, respectively.
[0034]
As shown in FIG. 5, the terminals 19 of the recording / reproducing apparatuses 500a and 500b, the PIN number output terminal 126, the bit stream input terminal 9 and the bit stream output terminal 22 are converted into the converters 200a and 200b and IEEE 1394 shown in detail in FIG. Connected via the bus line BL. Here, the data input to the bit stream input terminal 9 of the copy destination 500b is sent to, for example, an optical pickup (not shown) and recorded on the copy destination medium.
[0035]
The recording / reproducing apparatuses 500a and 500b both include an encoder ENC2 ′ shown in detail in FIG. The encoder ENC2 ′ is substantially the same as the encoder ENC shown in FIG. 6, and has an analog input terminal 1, digital input terminals 1F and 2F, and clock input terminals 5A and 5B. The analog input terminal 1 can receive analog signals from the analog output terminals 17 and 18 (see FIG. 9) of the copy source 500a and other microphones and analog playback devices. The analog signals are input by the A / D converters 2 and 3, respectively. A / D conversion is performed. The data A / D converted by the A / D converters 2 and 3 are applied to the difference calculator 6 and the packing encoder 7 via the switches SW1, SW2, and 4, respectively.
[0036]
The digital input terminals 1F and 2F and the clock input terminals 5A and 5B are connected to the digital output terminals 23 and 24 and the clock output terminals 23B and 24B of the copy source 500a, respectively. Each data input via the digital input terminals 1F and 2F is applied to the difference calculator 6 and the packing encoder 7 via the switches SW1, SW2 and 4, respectively, and input via the clock input terminals 5A and 5B. The clocks f and 2f are applied to the clock generator 5. The clock generator 5 has a PLL circuit that locks to the input clocks f and 2f, and switches the switches SW1 and SW2 so as to select each data input via the digital input terminals 1F and 2F.
[0037]
12, the converter 200 includes a CPU 206, a physical layer processing unit 202, a link layer processing unit 203, a controller 204, a buffer memory 205, and latches 207 to 210, and the latches 207 to 210 are terminals. 19, the personal identification number output terminal 126, the bit stream output terminal 22, and the bit stream input terminal 9. When data such as a personal identification number and a bit stream on the bus line BL reaches the controller 204 via the physical layer processing unit 202 and the link layer processing unit 203, the data is sorted by the controller 204 and the buffer memory 205, and is latched by parallel data 207. , 209, 210. Note that the copy destination recording / reproducing apparatus 500b can record PCM data using, for example, a DAT (digital audio tape) recorder. Further, as a transmission interface, a SCSI parallel bus may be used instead of the IEEE 1394 serial bus. Further, a USB (Universal Serial Bus) may be used instead of the IEEE 1394 serial bus.
[0038]
Next, a process for charging a copyright fee at the time of copying (playback + recording) will be described with reference to FIG. First, in FIG. 5, when the reproduction button of the copy source 500a is pressed and the recording button of the copy destination 500b is pressed, the ISRC code and the SID code are detected from the recording medium 401 by the decryption unit 20 of the copy source 500a. , The terminal 19 and the converter 200a. The personal computer 603 reads the user code recorded in advance in the electronic money 607 and sends it to the host 608 together with the ISRC code, SID code and recording permission request signal.
[0039]
When the host 608 receives the recording permission request signal, it starts the processing shown in FIG. 13 (step S100), and when it receives the ISRC code and SID code, it checks whether the SID code is authentic (step S101 → S102). If YES, a recording fee (for example, 300 yen) is charged to the user code (step S103), and then a recording permission signal is transmitted to the personal computer 603 (step S104). On the other hand, if the SID code is not authentic in step S102, a recording non-permission signal is transmitted to the personal computer 603 (step S105).
[0040]
When the personal computer 603 receives the recording permission signal, it sends it to the copy source 500a and the copy destination 500b via the converters 200a and 200b, respectively, and validates the playback button and the recording button. When a recording disapproval signal is received, playback and recording are invalidated.
[0041]
Here, as a copyright fee charged at the time of recording, an ISRC code, that is, a fee determined in advance for each song can be charged. Further, as a method for saving the charged copyright fee, it can be saved in the memory on the host 608 side or in the electronic money 607 on the user side. As a collecting method, when a user code and a payment account are registered in advance on the host 608 side and the charged copyright fee is stored in a memory on the host 608 side, for example, the user is collected from the account every month. In addition, when the charged copyright fee is stored in the electronic money 607 on the user side, for example, the host 608 receives the copyright fee data from the personal computer 603 in a polling manner every month and receives it from the account. Can be collected. As another method for charging and collecting the copyright fee, the “EMV” standard prepaid method can be used.
[0042]
FIG. 14 shows a process of charging a copyright fee at the time of reproduction as a modification. Here, in order to simplify the description, it is assumed that the user has a playback device 500 (and converter 200, personal computer 603) having only a playback function (decoder DEC2) in FIG. When the playback button of the playback device 500 is pressed, the ISRC code and the SID code are detected from the recording medium 401 by the decryption unit 20 of the playback device 500 and sent to the personal computer 603 via the terminal 19 and the converter 200a. The personal computer 603 reads the user code recorded in advance in the electronic money 607 and sends it to the host 608 together with the ISRC code, SID code, and reproduction permission request signal.
[0043]
When the host 608 receives the reproduction permission request signal, it starts the processing shown in FIG. 14 (step S200), and when it receives the ISRC code and the SID code, it checks whether the SID code is authentic (step S201 → S202). In the case of YES, a reproduction fee (for example, 30 yen) is charged to the user code (step S203), and then a reproduction permission signal is transmitted to the personal computer 603 (step S204). On the other hand, if the SID code is not authentic in step S202, a reproduction non-permission signal is transmitted to the personal computer 603 (step S205). When the personal computer 603 receives the playback permission signal, it sends it to the playback device 500 via the converter 200 to enable the playback button. Further, when the reproduction non-permission signal is received, the reproduction is invalidated.
[0044]
In the case of reproduction, since it is desired that the reproduction terminal 500b “disappears” after reproduction once so that it cannot be copied without permission on the user's terminal, the copyright data rewriting unit 30 causes the ISRC code and SID code in the reproduction terminal 500b. And all the copyright data such as the number of copies are deleted, and the copy prohibition code is set to copy prohibition. Alternatively, if the user ID and the date of permission are added to the copyright data, the new copyright data is added to the analog output signal, and copying can be suppressed.
[0045]
FIG. 15 shows a process for charging different copyright fees at the time of reproduction and copying (reproduction + recording) as another modification. Here, the personal computer 603 transmits a reproduction permission request signal to the host 608 when the user desires only reproduction, and transmits a recording permission request signal when the user desires copying. When the host 608 receives the reproduction / recording permission request signal, the host 608 starts the processing shown in FIG. 15 (step S300). When the host 608 receives the ISRC code and the SID code, the host 608 checks whether the SID code is authentic (steps S301 → S302). If the SID code is not authentic, a reproduction / recording disapproval signal is transmitted to the personal computer 603 (step S308).
[0046]
On the other hand, if the SID code is authentic, the reproduction permission request signal or the recording permission request signal is checked (step S303). In the case of a recording permission request signal, a recording fee (for example, 300 yen) is charged to the user code (step S304), and then a recording permission signal is transmitted to the personal computer 603 (step S305). On the other hand, in the case of the reproduction permission request signal, a reproduction fee (for example, 30 yen) is charged to the user code (step S306), and then the reproduction permission signal is transmitted to the personal computer 603 (step S307).
[0047]
Next, a second embodiment will be described with reference to FIGS. This system is generally composed of a copyright fee management center 608a, a software transmission center 800, and a user side 801, and the three parties are connected via a communication line such as the Internet. In this system, the copyright fee management center 608a charges and collects the copyright fee from the software transmission center 800 in return for supplying the music to the user side 801 by the software transmission center 800 by the music on demand method. Yes.
[0048]
The software transmission center 800 is provided with the recording / reproducing apparatus 500a, the converter 200a, the personal computer 603, the card reader 606, and the card-type electronic money 607 shown in the first embodiment. An autochanger is provided for selective playback. The user side 801 has a playback device 500b, a converter 200b, a personal computer 703, a DVD player, an audio amplifier 802, a speaker 803, and the like.
[0049]
Next, copyright fee charging processing will be described with reference to FIGS. When the user inputs encryption and requested music to the personal computer 703, first, as shown in FIG. 17, the personal computer 703 makes a request for the music title to the personal computer 603 of the software transmission center 800 (step S211) and waits (step S211). S212). On the software transmission center 800 side, as shown in FIG. 18 (a), after searching the recording medium 401 on which the music requested by the user 801 is recorded, it is reproduced and the ISRC code and SID code of the music title are detected. (Step S221), and sent to the copyright management center 608a (Step S222).
[0050]
The processing of the copyright management center 608a is almost the same as the processing at the time of reproduction by the host 608 in the first embodiment. As shown in FIG. 18B, first, the ISRC code and SID code are obtained from the software transmission center 800. When it is received, it is checked whether or not the SID code is authentic (steps S201 → S202). In the case of YES, a reproduction fee is charged to the software transmission center 800 (step S203), and then a reproduction permission signal is transmitted to the software transmission center 800 (step S204). On the other hand, if the SID code is not authentic in step S202, a reproduction non-permission signal is transmitted to the software transmission center 800 (step S205).
[0051]
As shown in FIG. 18A, the software transmission center 800 executes a process of paying a reproduction fee to the copyright management center 608a when a reproduction permission signal is received from the copyright management center 608a (step S223). → S224) Next, the music is reproduced and transmitted to the user side as a bit stream signal (or a PCM signal) (step S225). On the other hand, when the reproduction non-permission signal is received, this process is terminated without performing reproduction. In this case, a comment such as “I'm sorry. The song you want can't be sent right now” may be sent. As shown in FIG. 17, the user side receives the information transmitted from the software transmission center, and when the requested song is received, the bit stream signal is reproduced in analog (step S213).
[0052]
FIG. 19 shows a modification of the processing of the soft transmission center 800 in the second embodiment. In this process, step S226 is added to the process shown in FIG. 18 (a), and when the requested song is transmitted to the user side, a reproduction fee is issued by issuing a bill to the user as the price. Collect.
[0053]
Next, another method of recording the SID code will be described with reference to FIGS. In the above embodiment, the SID code or the like is recorded in the RAM area of the disk. In this embodiment, however, the PCA (post cutting area) provided on the inner periphery side from the lead-in portion as shown in FIG. Write by laser cutting. As shown in FIG. 21, the signal in this case is an RZ (Return to Zero) signal, which is modulated by a PE (Phase Encoding) signal having a phase different according to bits “1” and “0”, and pit data (bar code) ) Is recorded.
[0054]
This writing can be realized by a laser cutting process of about several seconds using a laser cutting unit 807 as shown in FIG. 22 after the disc stamping (molding process), so that the productivity of the disc is not deteriorated. . The writing method will be described with reference to FIGS. 22 and 23. First, when the copyright information is input to the copyright encoding circuit 805 (step S21), the copyright information is scrambled by the copyright encoding circuit 805. (Step S22), then formatted into a predetermined format (step S23), and then converted into a PE-RZ signal (step S24). Next, the laser cutting unit 807 modulates the laser beam with the PE-RZ signal and writes it to the PCA of the disk (step S25).
[0055]
In the above embodiment, the card-type electronic money has been described as merely having a function as a cash card. However, a user's Internet ID code is further inserted into the card-type electronic money, and a single card is used as a personal computer. The Internet may be automatically connected to the terminal 603, thereby eliminating the need for a single card, or recording the Internet ID code of the host and automatically connecting to the host. It may be. Thereby, the connection is automated, and the troublesomeness of the user can be reduced.
[0056]
【The invention's effect】
As described above, according to the present invention, DVD format Copyright information for information copied / reproduced from a DVD having a data recording structure DVD In advance, this copyright information is detected and checked to see if it is authentic. Charges can be made with the copy protection key, and unauthorized copies (so-called pirated copies) can be suppressed.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a format for realizing an embodiment of a DVD copyright fee charging method according to the present invention;
FIG. 2 is an explanatory diagram showing details of the copyright management information of FIG. 1;
FIG. 3 is an explanatory diagram showing another format.
FIG. 4 is an explanatory diagram showing still another format.
FIG. 5 is a block diagram showing a main apparatus for realizing an embodiment of a DVD copyright fee charging method according to the present invention;
FIG. 6 is a block diagram showing an encoder for producing a DVD-audio.
7 is an explanatory diagram showing sampling periods and data strings of the two A / D converters of FIG. 6. FIG.
FIG. 8 is an explanatory diagram showing user data packed by the packing encoder of FIG. 6;
FIG. 9 is a block diagram showing a decoder in the recording / reproducing apparatus of FIG. 5;
10 is an explanatory diagram showing a data string and a sampling cycle decoded by the decoder of FIG. 9;
11 is a block diagram showing in detail an encoder in the recording / reproducing apparatus of FIG. 5. FIG.
12 is a block diagram illustrating in detail the converter of FIG.
13 is a flowchart for explaining processing of the host of FIG. 5 at the time of copying.
14 is a flowchart for explaining the processing of the host of FIG. 5 during reproduction.
15 is a flowchart for explaining processing of the host of FIG. 5 during reproduction / copying.
FIG. 16 is a block diagram showing a main apparatus for realizing a second embodiment of the DVD copyright fee charging method according to the present invention;
FIG. 17 is a flowchart for explaining processing of the user-side playback device of FIG. 16;
18 is a flowchart for explaining processing of the software transmission center and the copyright management center of FIG.
FIG. 19 is a flowchart for explaining a modification of the process of the software transmission center of FIG. 16;
FIG. 20 is an explanatory diagram showing PCA as another copyright management information area.
FIG. 21 is an explanatory diagram showing a write signal to the PCA of FIG.
22 is a block diagram showing a writing device to the PCA of FIG.
23 is a flowchart for explaining processing of the writing device in FIG. 22;
[Explanation of symbols]
200a, 200b Converter
401 Recording medium (DVD)
500a Recording / reproducing apparatus (reproducing apparatus)
500b Recording / reproducing device (recording device)
603 PC
606 card reader
607 Card type electronic money
608 Host device
608a Copyright Management Center (Copyright fee charge side)
800 Software supply center (information supply side)
801 User side

Claims (1)

The audio data is recorded in units of sectors including user data having a subheader and a data area, and is formatted so that copy permission count information is stored in the subheader of the user data of the sector, and the formatted data and the audio data The ISRC code, the copy prohibition code, and the copyright information including the copy permission number information are recorded on the DVD as a DVD format, and the recorded DVD is reproduced by the user-side reproducing device, and the user-side recording device reproduces the other information. A DVD copyright fee charging method for charging information to be copied when copying to a recording medium,
Transmitting at least the ISRC code of the copyright information from at least one of the playback device and the recording device to a host device connected via the Internet;
Charging the user for the copy if the host device permits the copy based on the copyright information;
When the copying is performed from the playback device on the user side to the recording device on the user side by a predetermined serial interface, the copy permission number information in the copyright information of the DVD is deleted, and the copy prohibition code is changed to copy prohibition. The steps to be copied
A method for charging copyright fees for DVDs.

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