JPH0711900B2 - Recording / reproducing apparatus and recording apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus, such as a digital audio tape recorder (hereinafter referred to as DAT), for converting an analog signal into a digital signal for recording, and a recording apparatus.

[0002]

2. Description of the Related Art In recent years, standardization of interface specifications, which is a transmission method for connecting digital audio signals between audio devices, has progressed, and CD players and satellite broadcast tuners (hereinafter referred to as BS
In addition to the analog output terminal,
Those equipped with a digital output terminal have been commercialized. Further, a recording / reproducing apparatus and a recording apparatus such as DAT, which can convert an analog signal into a digital signal and record and reproduce it, have been put into practical use.

As an example of the above-mentioned recording / reproducing apparatus and recording apparatus, DAT will be described below with reference to the drawings.

FIG. 3 is a connection diagram of audio equipment centering on DAT, FIG. 4 is a part of a signal format of a digital audio interface, and FIG. 5 is a part of a recording format of DAT.

In FIG. 3, reference numeral 61 is a BS tuner, and 61A and 61D are analog output terminals and digital output terminals of the BS tuner 61. Reference numeral 62 is a CD player, and 62A and 62D are analog output terminals and digital output terminals of the CD player. 63 is DAT, 6
3A and 63D are analog output terminals and digital output terminals of the DAT 63. Reference numeral 64 is an analog audio device such as an FM tuner or analog record player, and 64A is an analog output terminal of the analog audio device 64. 65 and 66 are DAT,
65B, 66B analog input of DAT65, DAT66
Power terminal, 65C, 66C are DAT65, DAT66 digital input terminal, 65A, 66A are DAT65, DAT
66 analog output terminals, 65D and 66D are DAT6
5, DAT 66 digital output terminal. From the digital output terminals 61D, 62D, 63D and 65D of each device to the digital input terminals 65C and DAT of the DAT 65
Signals are transferred to and from the digital input terminal 66C of 66 in the format of the transmission system defined as shown in FIG. As shown in FIG. 4A, two subframes of the left channel and the right channel are formed at the time of sampling the analog signal. Each subframe consists of 32 bits as shown in FIG. 4B, and is used for a 4-bit synchronization amble and for extension of auxiliary information and audio data.
It is configured to transfer 20-bit audio data after a bit auxiliary signal . The remaining 4 bits are 1 byte indicating the validity of audio data.
Validity flag, one bit for transmitting other information
Information and output about user data and audio data
1-bit channel for transmitting information such as
1 for detecting status and transmission signal errors
It is a parity bit of the
The channel status is 192 as shown in FIG.
It is configured so that 192 bits over the frame have a meaning as one block. The 6 bits from bit 0 to bit 5 of the channel status signal are control bits, and indicate the use of audio data and the propriety of digital copying. That is, as shown in FIG.
Of the signal input to the digital input terminal 65C of the control signal in the channel status signal
When the bit 2 which is a bit is "0", the DAT 65 cannot perform digital copy. (See, for example, "Electronic Life", Vol. 655, pp. 18-19). Also, in the case of a copyright-recognized one such as a compact disc, a signal indicating prohibition of digital copying is recorded on the reproduction medium like a compact disc. When this compact disc is reproduced, bit 2 of the channel status signal is reproduced. Is output from the digital output terminal. Therefore, when a compact disc on which such a music source is recorded is reproduced, the CD player 6
The signal from the digital output terminal 62D of 2 is DAT6 because bit 2 of the channel status signal is "0".
5 cannot be recorded.

Further, DAT63, DAT65, DAT6
The tape No. 6 has a recording format as shown in FIG.
A main ID for reproducing data is stored in the PCM area in the central part of the tape. PCM shown in FIG.
The area consists of 128 blocks, and one block is shown in FIG.
It consists of 288 bits as shown in (b). Main ID
As shown in FIG. 5 (c), the format ID, ID1 to ID6, ID7 are repeatedly recorded every one block. As shown in FIG. 5D, the format ID
2 bits of “00”, that is, when the DAT tape is recording audio data, the ID 6 is 2
When the bit is "00", digital copy is possible,
When "10", digital copying is prohibited. That is, the tape recorded by the DAT user has ID6 of "0".
It becomes 0 ", and digital copying is possible. However, in the case of a soft tape such as a music source, if" 10 "is recorded in ID6, digital copying cannot be performed.

However, recording from the analog output terminal 62A of the CD player 62 to the analog input terminal 65B of the DAT 65, and the analog output terminal 63A to D of the DAT 63.
Recording on the analog input terminal 65B of the AT 65 is possible, and analog copying is possible on a compact disc or DAT soft tape even if digital copying is prohibited. However, in this case, the DA conversion circuit of the CD player 62 or the DA conversion circuit of the DAT 63, and the DAT 65
Since it goes through the AD conversion circuit of, the sound quality may be deteriorated to some extent as compared with the digital copy. Furthermore, since the ID6 shown in (d) of FIG. 5 is “00” for the tape which has been analog-recorded once, the digital copy without deterioration of the sound quality becomes infinitely possible thereafter, for example, from DAT65 to DAT66.

[0008]

As described above,
With the conventional DAT, the DAT recorded once with an analog signal
Since the main tape ID6 is recorded as "00", the digital tape can be infinitely copied thereafter.
Although the sound quality of the compact disc or the music soft tape of DAT is slightly deteriorated at the time of analog recording, it is possible to make a duplicate product by digital copying without deterioration of the sound quality. Therefore, it has a problem that it may bring disadvantages to the software industry such as music.

That is, since the conventional recording / reproducing apparatus such as DAT and the recording apparatus determine whether or not the digital copying is possible by only one bit of bit 2 of the channel status signal, the compact disc and the music soft tape of the DAT are digital signals. However, there was a problem that the analog signal could not be copied even once and the analog signal could be recorded indefinitely even if the contents did not change.

In view of the above-mentioned problems, the present invention provides a recording / reproducing apparatus and a recording apparatus including a DAT that limits the number of generations of digital copy even for an analog-recorded DAT tape.

[0011]

In order to solve the above-mentioned problems, is the recording / reproducing apparatus of the present invention a medium of a generation that updates the generation when a digital copy is made from a copy control subcode signal recorded on the medium? , Or a medium identifying means for identifying whether or not the medium has reached a certain generation and cannot be digitally copied thereafter, and the generation information obtained from the medium identifying means is converted into a copy control signal to be digitized.
For example, copy control signal converting means for outputting as digital output signal together with audio signal, copy control subcode signal generating means for generating copy control subcode signal which is generation information to be recorded on the medium, and converting analog signal to digital signal is obtained and a recording means for recording with.

The recording apparatus of the present invention is digital.
Copy control transmitted along with an audio signal, for example
Digital input means for inputting signals and analog input means
A copy control subcode signal generating means for generating a copy control subcode signal which is generation information to be recorded on the medium, and the input of the digital input means is digitally recorded,
An input analog signal from the serial analog input unit is obtained and a recording means for recording is converted into a digital signal. A recording / reproducing apparatus according to claim 1 of the present invention,
In this recording device, the copy control signal is digital
One sampling period for connecting audio equipment
2 frames for one sampling period
Each subframe is composed of
Audio data, and at least audio data
Various types including channel status for transmitting information
Digital audio interface consisting of accompanying data
Of multiple channels of the channel status
A channel transmitted with an audio signal as a unit.
Multiple bits in the channel status signal are related to generation information
It is attached to the
The recording / reproducing apparatus according to claim 1 and the recording apparatus according to claim 2
And the copy control signal is sent between the digital audio equipment.
1 sampling period is 1 frame
The sampling period consists of two subframes,
One subframe is a 4-bit synchronization amble and auxiliary information
4-bit oki used for audio and audio data expansion
Jari signal, 20-bit audio data, audio
A 1-bit validity flag that indicates the validity of the data
1-bit user data for transmitting other information
Information about the audio data, information indicating the output device, etc.
1-bit channel status to transmit and transmit
1-bit parity bit for error detection
32 bit digital audio interface
The channel status 192 frame of the face signal
It is transmitted with the audio signal as a unit
The control bit of the channel status signal
"0" of bit 2 and a specific bit in the category code
It is characterized by including a combination of.

[0013]

The present invention has the following actions due to the above-mentioned configuration.

According to a first aspect of the present invention, when a medium recorded by converting an analog signal into a digital signal is reproduced, the medium discriminating means discriminates that the medium is a generation medium which updates the generation when digital copying is performed. Copy control signal conversion means controls copy of the generation information obtained from the medium identification means.
Signal and convert it to a digitized audio signal
In addition, the copy control subcode signal generating means outputs a digital output signal, and when the copy control subcode signal generating means converts an analog signal into a digital signal and records the digital signal, the copy control subcode signal having a predetermined value is generated. Therefore, even if the first generation is an analog-recorded tape, the number of digital copy generations can be limited.

According to a second aspect of the present invention, there is provided a recording device which converts an analog signal into a digital signal and reproduces the recorded medium.
The world that updates the generation when the body identification means makes a digital copy
And the copy control signal converting means
Generation information obtained from the medium identification means is used as a copy control signal.
The converted and digitized audio signal along with the
When the digital signal is output as a digital output signal and the copy control sub-code signal generating means converts the analog signal of the analog input means into a digital signal for recording, a copy control sub-code signal of a predetermined value is generated. Therefore, when the medium recorded by the recording apparatus of the present invention is digitally copied by another recording / reproducing apparatus, the number of generations of digital copy can be limited.

A recording / reproducing apparatus according to claim 1 and claim 2
According to the third aspect and the fourth aspect of the present invention, a recording control signal for limiting the number of generations of subsequent digital copies is transmitted by an audio channel.
Multiple bits in the tas signal are associated with generation information
And more specifically, claim 5 and claim
As shown in item 6, the copy control signal is the channel status.
Bit 2 of the control signal, which is the control bit
The combination of "0" and a specific bit in the category code
Since the signal includes the signal, the recording / reproducing apparatus of the present invention and the medium recorded by the recording apparatus cannot be digitally copied even if an attempt is made to perform digital copying using the conventional reproducing apparatus and the conventional recording apparatus. You can limit the number of generations.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the recording / reproducing apparatus and the recording apparatus of the present invention will be described in detail below with reference to the drawings by taking DAT as an example.

FIG. 1 is a block diagram of a DAT in one embodiment of the present invention. In FIG. 1, 1 is an analog input terminal, 2 is an AD converter, 3 is (a), (b) of FIG.
Transmission between digital audio devices shown in (c)
1 sampling period, 1 sampling period
The ringing period consists of two subframes, and one subframe
The ram is a 4-bit sync amble and auxiliary information and audio.
4-bit auxiliary signal used to extend audio data
No., 20-bit audio data, and audio data
1-bit validity flag indicating the validity of the data, other
1-bit user data for transmitting information, audio data
Information related to the data, information indicating the output device, etc.
Detects 1-bit channel status and transmission signal error
32 bits in total, 1 bit parity bit to output
A digital audio interface signal consisting of
A digital input terminal for inputting, 4 is input to the digital input terminal 3 according to the transmission system of one embodiment of the present invention.
Demodulates a digital audio interface signal
A digital demodulation circuit 5 for selecting an output signal of the AD converter 2 or an output signal of the digital demodulation circuit 4, an interleave process 6 for changing the time sequence of the digital signals, addition of an error correction code, which will be described later. A recording signal processing circuit for adding an output signal of the subcode encoder 13, 7 is a recording amplifier, 8 is a recording head, and 9 is a magnetic tape which is a medium of an embodiment of the present invention. 10
FIGS. 4 (a) from the output signal of the digital demodulating circuit 4,
The digital audio interface shown in (b) and (c)
The channel status 192 frame of the face signal
A channel status decoder for obtaining a channel status signal to be transmitted together with an audio signal as one unit .

[0019]

[Table 1]

11 indicates, for example, as shown in Table 1, bit 2 of the channel status signal is "0" and bit 14 is "
1 "is a discriminating unit that prohibits digital copying, and discriminates so as to enable digital copying when bit 2 and bit 14 are other than the above. 12 is a channel that has passed through the discriminating unit 11 in the case of digital copying. From bit 2 and bit 14 of the status signal, FIG. 5 (a), (b), (c)
, The PCM is divided into predetermined blocks.
With the PCM data in the same block unit as the data
This is the information for reproducing the PCM data to be recorded.
The main ID6 in the main ID is obtained, for example, as shown in Table 2, and in the case of analog recording, the ID6 is a digital copy control sub-code signal generating section which becomes "00". 1
Reference numeral 3 is a subcode encoder for creating a subcode including ID6.

[0021]

[Table 2]

Reference numeral 14 denotes an operation switch including a recording switch, a reproduction switch, and an input changeover switch for switching between recording of a signal input to the analog input terminal 1 and copying of a signal input to the digital input terminal 3. Controls the selection switch 5 according to the input selector switch,
In the case of analog recording, it is an input setting unit that controls ID6 to be "00". Reference numeral 16 denotes a recording prohibition setting unit that controls the recording signal processing circuit 6 so as to prohibit recording according to the output signal of the determination unit 11. Reference numeral 8 is a reproduction head, 17 is a reproduction amplifier, 18 is a reproduction signal processing circuit for performing error correction of digital signals and deinterleave processing for restoring the temporal arrangement, 19 is a DA converter, and 20 is an analog output terminal. Is. Reference numeral 21 denotes a sub-code decoder for obtaining a signal such as a main ID, and reference numeral 22 denotes, for example, as shown in Table 3, from the output signal ID6 of the sub-code decoder 21, bit 2 and bit 14 of the channel status signal.
Is a digital copy control signal converter for obtaining

[0023]

[Table 3]

Reference numeral 23 is a digital copy control signal converter 22.
It is a channel status encoder including the output signal of. 25 is an output signal of the reproduction signal processing circuit 18 or an output signal of the channel status encoder 23.
The channel signals are combined with the audio signals shown in (a) and (b) .
Digital audio system for transmitting status signals
26 is a digital modulation circuit for obtaining a digital output signal which is an interface signal, and 26 is a digital audio interface.
It is a digital output terminal that outputs a source signal . 27 is a discrimination unit 11, a digital copy control subcode signal generation unit 1
2, a system controller including an input setting unit 15, a recording prohibition setting unit 16, and a digital copy control subcode signal generation unit 22, and is configured by, for example, a microcomputer.

Regarding the DAT configured as described above,
The operation will be described below with reference to the drawings and tables.
FIG. 2 is a flowchart showing a part of the processing of the system controller 27.

First, when a digital copy of a compact disc or a DAT soft tape is made, the signals shown in FIGS. 4A and 4B are input to the digital input terminal 3 of the recording side DAT to switch the input of the operation switch 14. When the switch is set to digital copy and the recording switch is pressed, the system controller 27 causes the decision step 31 in FIG.
It is judged that the recording switch is pressed, and the process goes to a judgment step 32. In the judgment step 32, it is judged that the digital copy is set, and the input setting unit 15
Sets the selection switch 5 so that the output signal of the digital demodulation circuit 4 is input to the recording signal processing circuit 6, and the processing step 33 is reached. In the processing step 33, the determination unit 1
1 receives the output signal of the channel status decoder 10, and inputs bit 2 and bit 14 of the channel status signal.
Check. Bit 2 when a compact disk or DAT soft tape is played back is a signal indicating digital copy inhibition, that is, "0", and bit 14 is
Since it is currently “0”, it is determined from Table 1 that digital copying is possible. Therefore, the process goes from the judgment step 34 to the processing step 35. In the processing step 35, the digital copy control sub-code signal generator 12 uses
The signal that D6 becomes “10” is output by the subcode encoder 13
Output to. Then, in process step 36, the system controller 27 sets the recording mode. ID6
The output signal of the sub-code encoder 13 and the output signal of the selection switch 5 including the signal are recorded on the magnetic tape 9 by the recording head 8 through the recording signal processing circuit 6 and the recording amplifier 7. Therefore, even a compact disc or a DAT soft tape can be digitally copied.

Next, a tape in which a compact disc or a soft tape of DAT is digitally copied is reproduced by DAT,
A case will be described in which the reproduced digital output signal is digitally copied by another DAT.

When the reproduction switch in the operation switch 14 of the reproduction side DAT is pressed, the system controller 27 recognizes that the reproduction switch has been pressed in the discrimination step 39, and outputs the signal recorded on the magnetic tape 9 to the reproduction head. Two
8 reproduces, passes through a reproduction amplifier 17 and a reproduction signal processing circuit 18, and converts a digital signal of an audio signal into a DA converter 1
9 and the digital modulation circuit 25, and the subcode signal is input to the digital copy control signal converter 22 through the subcode decoder 21. In processing step 40, the digital copy control signal converter 22 converts the main ID ID6 into the bit 2 and the bit 14 of the channel status signal according to Table 3. Since the ID 6 of the tape 9 being reproduced is "10", the bit 2 of the channel status signal is "0" and the bit 14 thereof is "1". The output signal of the digital copy control signal converter 22 is input to the channel status encoder 23, and the channel status encoder 23 creates the signal shown in FIG. 4 (c). Subsequently, in processing step 41, the digital modulation circuit 25 obtains the digital signals shown in FIGS. 4A and 4B from the output signals of the channel status encoder 23 and the reproduction signal processing circuit 18, and outputs the digital signals from the digital output terminal 26. Output. This signal is input to the recording DAT digital input terminal 3
When recording is attempted by connecting to, the discriminating unit 11 discriminates that digital copying is prohibited as shown in Table 1 in the discriminating step 34 of the system controller 27 of the recording side DAT. As a result, the recording prohibition setting unit 16 prohibits recording by, for example, blocking the signal output from the recording signal processing circuit 6 to the recording amplifier 7. Therefore, from the tape recorded with a compact disc or DAT soft tape, DAT
Therefore, digital copying is not possible.

Next, a case where a signal input from the analog input terminal 1 is recorded and this tape is digitally copied will be described.

When the input switch of the operation switch 14 of the recording side DAT is set to analog recording and the recording switch is pressed, when analog recording is judged in the judgment step 32 of the system controller 27, it is inputted to the analog input terminal 1. The signal converted into a digital signal by the AD converter 2 is input to the selection switch 5. The input setting unit 15 controls the selection switch 5 to select the output of the AD converter, and in the processing step 37, outputs a control signal to the digital copy control subcode signal generation unit 12 so that ID6 becomes “00”. To do. Next, in process step 36, the subcode signal including ID6 and the output signal of the selection switch 5 are recorded on the magnetic tape 9.
The tape thus recorded is referred to as a first-generation tape.

When the first generation tape is digitally copied to make the second generation tape, when the first generation tape is reproduced, in the processing step 40 of the system controller 27 of the reproduction side DAT, the digital copy control signal conversion unit is executed. 22 has an ID6 of "00", and therefore, from Table 3, a signal in which bit 2 of the channel status signal is "1" and bit 14 is "1" is output. When the signal from the digital output terminal 26 including this signal is digitally copied by another DAT, in the determination step 34 of the system controller 27 of the recording DAT, the determination unit 15 determines that the bit 2 of the channel status signal is "1", the bit 14 Is "1", digital copying is possible according to Table 1, and the processing step 35 is reached. The digital copy control subcode signal generator 12 sets ID6 from Table 2 to "01". The tape thus recorded is referred to as a second generation tape.

Similarly, in the case where the second generation tape is digitally copied to make the third generation tape, when the second generation tape is reproduced, the digital copy control signal conversion unit 22 of the reproduction side DAT displays Outputs a signal in which both bit 2 and bit 14 of the channel status signal are "0". When the signal from the digital output terminal 26 including this signal is input to the digital input terminal 3 of the recording side DAT and digitally copied, the discriminator 15 indicates that both bit 2 and bit 14 of the channel status signal are "0". From the table 2, the digital copy control subcode signal generation unit 12 can perform digital copy from No. 1 and ID6 is “10”.
To be set. The tape thus recorded is referred to as a third generation tape.

Similarly, if an attempt is made to digitally copy a third generation tape to make a fourth generation tape,
When the generational tape is reproduced, the digital copy control signal conversion unit 22 of the reproduction side DAT outputs a signal in which bit 2 of the channel status signal is "0" and bit 14 is "1" from Table 3. Digital output terminal 26 containing this signal
When a signal from is input to the digital input terminal 3 of the recording side DAT and a digital copy is to be performed, in the determination step 34 of the system controller 27, the determination unit 11 determines that the digital copy is prohibited as shown in Table 1. As a result, the recording prohibition setting unit 16 prohibits recording by, for example, blocking the signal output from the recording signal processing circuit 6 to the recording amplifier 7. Therefore, a digital copy fourth generation tape is not possible.

As described above, when the analog signal is converted into the digital signal and recorded, the copy control subcode signal generating section for recording the copy control subcode signal having a predetermined value on the medium and the medium are reproduced. In this case, by providing a copy control signal conversion unit that outputs a copy control signal that limits the number of subsequent digital copy generations, even if the medium is a medium recorded by first converting an analog signal into a digital signal, You can limit the number of digital copy generations.

Further, even if the medium recorded by the recording / reproducing apparatus and the recording apparatus of the present invention is combined with the conventional DAT for digital copying, the bit of the channel status signal which is the copy control signal in the digital output signal is used. Two
Include a signal that is "0", digital copying after the second generation is not possible, and the number of generations of digital copying can be limited.

In the above description, the 2-bit copy control signal has been described as an example, but there is an undefined portion in the subcode signal area of DAT, and as shown in FIG. 5C, the channel status signal is also unused. There are departments. Therefore, it is also possible to use a copy control signal in which the number of bits is increased according to the number of copy generations.

As described above, the number of generations of subsequent digital copies of the medium in which an analog signal is digitally converted and recorded by the recording / reproducing apparatus and recording apparatus such as DAT of the present invention is limited. That is, it becomes impossible to make unlimited copies without deterioration by digital copying from a medium recorded by converting a compact disc or a music soft tape of DAT into an analog signal. Therefore, it is less likely to bring a disadvantage to the software industry such as music. In addition, the copy that is the generation information recorded on the medium.
-Convert the control subcode signal to the copy control signal,
By outputting as a digital output signal, each
Each recording medium has its own recording
The copy control subcode signal recorded by the format
Digital output signal
As a result, it is possible to transmit with the unified standard. Obey
The same applies to recording / playback equipment of different categories.
A transmission line transmits generation information at the same time as an audio signal.
You can limit the number of copy generations by sending
In addition, even if the first-generation tape was recorded analog,
It has excellent effects such as limiting the number of generations of tar copy
It

[Brief description of drawings]

FIG. 1 is a block diagram of a DAT according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the processing of the system controller of FIG.

FIG. 3 is a connection diagram of audio equipment centering on DAT.

FIG. 4 is a format diagram showing a main part of a signal format of a digital audio interface.

FIG. 5 is a format diagram showing a main part of a DAT recording format.

[Explanation of symbols]

 3 Digital Input Terminal 10 Channel Status Decoder 11 Discrimination Section 12 Digital Copy Control Subcode Signal Generation Section 13 Subcode Encoder 21 Subcode Decoder 22 Digital Copy Control Signal Conversion Section 23 Channel Status Encoder 26 Digital Output Terminal 27 System Controller

Claims (6)

[Claims] 1. A medium of a generation in which the generation is updated when a digital copy is performed from a copy control subcode signal recorded in the medium, or a medium of a generation which reaches a certain generation and cannot perform the subsequent digital copy. and medium identification means for identifying whether converts generation information obtained from the medium identification means to the copy control signal, for example digitized
Copy control signal conversion means for outputting a digital output signal together with an audio signal, copy control subcode signal generation means for generating a copy control subcode signal which is generation information to be recorded on a medium, and an analog signal for converting to a digital signal When recording medium is provided with a recording means for recording and converting an analog signal into a digital signal,
The medium identifying unit identifies the medium as a generation medium that updates the generation when digital copying is performed, and the copy control signal converting unit outputs a copy control signal that limits the number of subsequent digital copy generations. A recording / reproducing apparatus, wherein the copy control subcode signal generating means is configured to generate a copy control subcode signal having a predetermined value when an analog signal is converted into a digital signal for recording. 2. A digitized audio signal, for example
Digital input to input the copy control signal transmitted with
The input means , the analog input means, the copy control subcode signal generating means for generating the copy control subcode signal which is the generation information to be recorded on the medium, and the digital input means.
Input is digitally recorded and input from the analog input means.
And recording means for recording by converting the force analog signal into a digital signal, when reproducing the medium on which is recorded by converting the analog signal into a digital signal, the medium identification means digital
Talcopy is a medium of the generation that updates the generation
Identify the as copy control signal converting means outputs a copy control signal that limits the number of generations since the digital copy, the copy control subcode signal generating means, said
A recording apparatus configured to generate a copy control subcode signal having a predetermined value when an analog signal of an analog input means is converted into a digital signal and recorded. 3. The copy control signal is a digital audio signal.
1 frame for 1 sampling period for connecting devices
And one sampling period consists of two subframes.
Each subframe is composed of multiple bits of audio data.
Data, and at least information about audio data
Various accompanying data including channel status for transmitting
Of the digital audio interface signal
Multiple frames of the channel status as one unit
Channel stay transmitted with audio signal as
Multiple bits in the tas signal are associated with generation information
The recording / reproducing apparatus according to claim 1, wherein the recording / reproducing apparatus is provided. 4. The copy control signal is a digital audio signal.
1 frame for 1 sampling period for connecting devices
And one sampling period consists of two subframes.
Each subframe is composed of multiple bits of audio data.
Data, and at least information about audio data
Various accompanying data including channel status for transmitting
Of the digital audio interface signal
Multiple frames of the channel status as one unit
Channel stay transmitted with audio signal as
Multiple bits in the tas signal are associated with generation information
The recording apparatus according to claim 2, wherein: 5. The copy control signal is digital audio.
1 frame for 1 sampling period for connecting devices
And one sampling period consists of two subframes.
1 subframe consists of a 4-bit synchronization amble,
4 bits used to extend auxiliary information and audio data
Audio signal, 20-bit audio data,
1-bit validator that indicates the validity of audio data
Flag, 1-bit user data for transmitting other information
Data, information about audio data and information indicating the output device.
1-bit channel status for transmitting information, and
And 1-bit parite for detecting errors in transmission signals
Digital audio consisting of 32 bits in total
.Channel status 19 of the interface signal
Two frames worth of audio signal as one unit
The control status of the transmitted channel status signal
Bit 2 "0", which is a bit, and the identification in the category code
2. A combination with a bit is included.
Recording / playback described in apparatus. 6. The copy control signal is digital audio.
1 frame for 1 sampling period for connecting devices
And one sampling period consists of two subframes.
1 subframe consists of a 4-bit synchronization amble,
4 bits used to extend auxiliary information and audio data
Audio signal, 20-bit audio data,
1-bit validator that indicates the validity of audio data
Flag, 1-bit user data for transmitting other information
Data, information about audio data and information indicating the output device.
1-bit channel status for transmitting information, and
And 1-bit parite for detecting errors in transmission signals
Digital audio consisting of 32 bits in total
.Channel status 19 of the interface signal
Two frames worth of audio signal as one unit
The control status of the transmitted channel status signal
Bit 2 "0", which is a bit, and the identification in the category code
3. A combination with a bit is included.
The recording device according to 1.