JP4876189B2 - Digital information receiving apparatus and digital information recording / reproducing method - Google Patents

Description

The present invention relates to a playback apparatus and an information recording / playback apparatus for playing back digital information such as video and audio, and in particular, gives restrictions on recording the played back information on other media with the authority of the copyright holder or the like. Relates to the device.

In the field of television broadcasting, recording and reproducing devices, and package media such as movie software, digital broadcasting has started, and consumer-use digital recording / reproducing devices corresponding to this have been put on the market. Package software for this device will appear in the near future. The advantage of digital broadcasting and digital recording devices is that there is no or very little quality degradation in the information transmission process and recording / reproduction process. However, there are problems in that many good quality copies of information are made around the place where the copyright holder does not know, and when the copy is repeated, profits are not returned to the copyright holder.

U.S. Pat. US Pat. No. 5,896,454 discloses a method of attaching 2-bit copy control information to information. This is to control the operation of the recording apparatus by selecting any one of copy prohibition, copy authorization, and copy authorization for only one generation according to the will of the copyright holder and information creator. The recording device does not perform the recording operation if the copy is prohibited, and performs the recording operation if the copy is authorized. If copying is permitted for only one generation, the recording apparatus rewrites the control information to information that does not permit further copying, and then performs a recording operation.

When the copy control information is prohibited from being copied in broadcasting, there is a problem that the user has no means to view the broadcast, such as when there is a visitor. Therefore, JP 2000-149 A
Japanese Patent No. 417 discloses a method for solving this problem by using a means of temporary recording even when the copy control information indicates copy prohibition. In this method, information is physically recorded once on a recording medium. However, a period of time for reproduction and viewing is limited to, for example, 90 minutes and deleted after reproduction or after the time limit. In other words, it is not stored for a long time and recorded for multipurpose use, but is equivalently delayed and viewed within 90 minutes.
Since the recording medium does not remain for a long time, the above inconvenience for the user can be solved without penalizing the copyright holder. Temporary recording is often performed using a hard disk recorder or the like built in the receiving device due to its nature.

Similar temporary recording is possible when the copy control information indicates copy authorization for only one generation. For example, a restriction of 90 minutes or the like is set, and the copy control information on the recording medium is left indicating only one generation of copy authorization within the time limit, and after the time limit has passed, no further copying is permitted. rewrite. This also has the effect of substantially delaying the broadcast by, for example, 90 minutes.

After being rewritten to information that does not permit further copying, it is impossible to copy information from a disk to a tape, for example. This may be inconvenient for the user.
Therefore, an operation of “move” is allowed to re-record on another recording medium on condition that the information on the original recording medium cannot be reproduced. Since the number of recording media is not increased, the recording media can be changed without penalizing the copyright holder.

U.S. Pat. 5,896,454 JP 2000-149417 A

The matter disclosed in the above-mentioned prior art is intended for the case where digital information is recorded by a digital recording device or the case where it is copied between a plurality of digital recording or reproducing devices. However, analog recording devices that have been widely used in the past are considered to be used frequently. There appears to be a great need for information that has been recorded or temporarily recorded in a new digital recording device to, for example, “move” to a conventional analog recording device. This is not described in the above literature. There is a need to provide the user with the means to do so without penalizing the copyright holder.

In view of the above problems, an object of the present invention is to provide an apparatus that realizes an operation such as moving or outputting to an analog recording apparatus without violating the original intention of a copyright holder or the like.

The above object can be achieved by, for example, the configuration described in the claims.

As described above, according to the present invention, it is possible to move to an analog recording apparatus that has been widely used in the past, and the user-friendliness can be improved. In addition, when a plurality of devices are connected, the user can select which device to move to. In addition, when both digital and analog devices are connected, if the former is preferentially selected as the destination of movement, the original operation in the movement mode of not increasing the number of recorded media can be performed. There are effects such as being able to.

In addition, even in a recording / reproducing apparatus having a plurality of apparatuses in the same housing, when moving to one of these analog recording apparatuses, the original operation of the movement mode is performed so as not to increase the number of recorded media. There is an effect such as being able to.

1 is a block diagram showing an embodiment of an entire digital information transmission / reception recording system to which the present invention is applied. FIG. 2 is a block diagram showing an example of a configuration of an information providing station 1 such as a broadcasting station in FIG. The block diagram which shows an example of a structure of the receiver 3 in FIG. The block diagram which shows an example of a structure of the recording / reproducing apparatus 4 in FIG. The block diagram which shows an example of the periphery of the recording medium of the recording / reproducing apparatus in FIG. The block diagram which shows an example of a structure of the control information signal in this invention. (A) shows what is sent from the information providing station, and (b) shows what is recorded on the recording medium. FIG. 4 is a block diagram illustrating an example of a configuration of a decoding circuit 308 in FIG. 3. The block diagram which shows other embodiment of the whole digital information transmission / reception recording system to which this invention is applied. The block diagram which shows an example of a structure of 6 A of recording / reproducing apparatuses in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings as necessary. The present invention relates to an apparatus for reproducing digital information and supplying it to an analog recording apparatus, in particular, an information moving apparatus. Prior to the description, the entire system to which the present invention is applied will be described.

FIG. 1 is a block diagram showing an embodiment of the entire system used in the present invention, and shows an example in which information is transmitted / received by broadcasting and recorded / reproduced. This includes devices to which the present invention is applied. 1 is an information providing station such as a broadcasting station, 2 is a relay station, 3 is a receiving device, 4 is a first recording / reproducing device, 5 is a display, 6 is a second recording / reproducing device, and 7 is a third recording / reproducing device. It is. When recording a broadcast or the like here, at least one of the first recording / reproducing apparatus 4, the second recording / reproducing apparatus 6, and the third recording / reproducing apparatus 7 is selected according to the copy control information attached thereto. Can be recorded. The first recording / reproducing apparatus 4 is described here as being based on a digital recording system built in the receiving apparatus 3. As the recording medium, for example, a hard disk that cannot be removed can be used. Video discs and video tapes that can be removed may be used, but a recording / reproducing device built in the receiving device is often used for storing information for a relatively short period of time. For example, the above-mentioned temporary recording is mainly used. It is desirable that it cannot be removed. The second recording / reproducing apparatus 6 will be explained here using a digital recording system, and the third recording / reproducing apparatus 7 will be explained here using an analog recording system. As described above, since the present invention relates to recording and movement to an analog recording apparatus, the third recording / reproducing apparatus 7 is indispensable for performing the intended operation of the present invention. However, either the first recording / reproducing apparatus 4 or the second recording / reproducing apparatus 6 does not exist,
Alternatively, the target operation can be realized if it exists but is not operating. Further, if only the information currently being broadcast is recorded on the third recording / reproducing apparatus 7, neither the first recording / reproducing apparatus 4 nor the second recording / reproducing apparatus 6 exists or exists. However, it is possible if it is not operating.

An information providing station 1 such as a broadcasting station transmits a signal radio wave modulated by information via a relay station 2 such as a broadcasting satellite. Of course, other transmissions such as cable transmission, telephone line transmission, and terrestrial broadcast transmission may be used. As will be described later, the signal radio wave received by the receiving device 3 on the receiving side is demodulated into an information signal, and if necessary,
The first recording / reproducing apparatus 4, the second recording / reproducing apparatus 6, or the third recording / reproducing apparatus 7 is recorded as a signal suitable for recording. Also, it is sent to the display 5. Here the user
Information content can be viewed directly. The information reproduced by the first recording / reproducing apparatus 4 and the second recording / reproducing apparatus 6 is given to the display 5 via the receiving apparatus 3 and the information such as the original video / audio is viewed. The information reproduced by the third recording / reproducing device 7 may also be given to the display 5 through the same route. However, since this is a conventional analog device, its reproduction output is supplied to the analog input terminal of the display 5. You may give it directly. When a removable recording medium in which information is recorded in advance, such as package software, is provided, the reproduction operation and the like in the second recording / reproducing apparatus 6 to the third recording / reproducing apparatus 7 to which the information is attached is performed. Is called. Information is often exchanged between devices using digital signals. For example, the receiving device 3 and the display 5 may be connected using analog signals.

FIG. 2 is a block diagram showing a configuration example of the information providing station 1 such as a broadcasting station in the above system. 11 is a source generation unit, 12 is an encoding circuit that performs compression by the MPEG system, 13 is a scramble circuit, 14 is a modulation circuit, 15 is a transmission antenna, 16 is a management information adding circuit, 1
Reference numeral 7 denotes an input terminal.

Information such as video and audio generated by the source generation unit 11 including a camera and a recording / reproducing device is compressed by the encoding circuit 12 so that it can be transmitted in a smaller occupied band. If necessary, the scramble circuit 13 performs transmission encryption so that only a specific viewer can view. After being modulated by the modulation circuit 14 to be a signal suitable for transmission, the signal is emitted from the transmission antenna 15 as a radio wave toward the relay station 2 such as a broadcasting satellite. At this time, the management information addition circuit 16 adds information such as the current time including the copy control information described above. Further, from the input terminal 17, for example, request information is input via a telephone line, which is omitted in FIG. This is utilized in a system for determining information to be transmitted in response to a viewer's request such as video on demand.

In practice, a plurality of information is often multiplexed in one radio wave by a method such as time division or spread spectrum. Although not shown in FIG. 2 for simplicity, in this case, the source generator 11
There are a plurality of systems of the encoding circuit 12 and the encoding circuit 12 and the scramble circuit 13.
A multiplex circuit for multiplexing a plurality of pieces of information is placed between the two.

FIG. 3 is a block diagram showing an example of the configuration of the receiving device 3 in the system of FIG. 3
01 is an RF / IF conversion circuit, 302 is a demodulation circuit, 303 is an error correction circuit, 304 is a descrambling circuit for canceling transmission encryption applied to the signal, 305 is a first demultiplexing circuit, and 306 is an input / output terminal 307 is a second demultiplexing circuit, 308 is a decoding circuit,
Reference numerals 309 and 310 denote output terminals, 311 denotes a control circuit for controlling the entire receiving apparatus 3, 312 denotes an information management circuit, 313 denotes a command input circuit, and 314 denotes an input terminal. Reference numeral 4 denotes a first recording / reproducing apparatus, which is incorporated in the receiving apparatus 3 as described in FIG. In the figure,
The solid line shows the main information flow such as video and audio, and the dotted line shows the flow of control signal information between the components.

First, the flow of information such as video and audio indicated by solid lines will be described with respect to the components 301 to 310. For example, radio waves from a relay station such as a broadcasting satellite are input to the RF / IF conversion circuit 301. Here, the radio wave in the RF band is frequency-converted to an IF band (Intermediate Frequency) and becomes a signal in a certain band independent of the reception channel.
The modulation operation performed for transmission is demodulated. Further, after an error in the code generated during transmission is detected and corrected by the error correction circuit 303, the descrambling circuit 304 releases the transmission cipher. Thereafter, the data is sent to the first and second demultiplexing circuits 305 and 307. As described above, particularly in the case of digital broadcasting, a plurality of pieces of information are often multiplexed on one channel by a method such as time division or spread spectrum. The demultiplexing circuit separates only desired information from this. The reason why the two demultiplex circuits are provided is not only to enable so-called back program recording but also to remove information not worth recording in the first demultiplex circuit 305. In other words, additional information such as weather forecasts, program broadcast schedules, etc. is often included in the information, which is good to see at the time of broadcasting, but it is not worth recording and seeing at a later date. It can also be removed.

The output of the first demultiplexing circuit 305 is given to the first recording / reproducing apparatus 4 and recorded on the recording medium as necessary. The signal is also given to the input / output terminal 306 and exchanges signals with the second recording / reproducing apparatus 6 connected thereto. The input / output terminal 306 is a bidirectional terminal and exchanges information to be recorded / reproduced with the second recording / reproducing apparatus 6 as digital data, for example. Of course, one information line does not necessarily have to be bidirectional, and may be composed of a plurality of unidirectional or bidirectional information lines. Generally IEEE 139
Connections according to four standards are often used. The second demultiplexing circuit 307 includes information sent from the descrambling circuit 304, information reproduced by the first recording / reproducing device 4, or a second recording / reproducing device from the input / output terminal 306. The information reproduced in step 6 is connected, and information to be viewed is selected, and desired information is further separated. In the next decoding circuit 308, the data compression of the moving image performed before the transmission is decoded, and the output terminal 309 is decoded.
, 310 to an external device. For digital broadcasting, the number of scanning lines is, for example, 10
More than 00 HD (High Definition) information and around 500 SD (Standard Definiti)
on) There is information. Accordingly, if the former is HD output and the latter is SD output, the information of the output terminal 309 is displayed on the HD compatible display, and the SD compatible display and the third recording / reproducing apparatus 7 in FIG. Information on the output terminal 310 may be supplied. Therefore, the output terminal 31
The information of 0 is better converted to analog, but the information of the output terminal 309 may be either digital or analog depending on the input of the display.

Next, control signals indicated by dotted lines will be described. The control circuit 311 is 3 from the above 301.
Control signals are exchanged between the components 05, 307, and 308, and the entire receiving apparatus 3 is controlled to perform a desired operation. The information management circuit 312 supplies management data when the control circuit 311 performs control in response to a request. For example, reception contract information is managed here. When the user designates a channel to be viewed, this designation is input from the input terminal 314 and sent to the control circuit 311 via the command input circuit 313. The control circuit 311 requests the reception contract information from the information management circuit 312. When it is determined that there is a contract with the channel designated by the user, a control signal is sent to each of the above-described components to instruct the receiving operation of the corresponding channel. The information management circuit 312 manages timer reservation information by the user.
When it is time to reserve viewing, the control circuit 311 sends a control signal to each component described above,
Start receiving operation.

When the first recording / reproducing device 4 is built in the receiving device 3, the input terminal 314 is used.
The recording / reproducing operation is performed according to the user's instruction input from. For this reason, the output of the command input circuit 313 is supplied. This control signal may be supplied from the control circuit 311.

Next, the recording / reproducing operation of the digital recording / reproducing apparatus will be described with reference to FIGS. The first recording / reproducing apparatus 4 and the second recording / reproducing apparatus 6 described above may have the same basic circuit block configuration, and an example thereof is shown here. Here, the third recording / reproducing apparatus 7 is an apparatus based on analog recording, and its configuration has been widely known so far, so that the description with reference to the drawings is omitted.

Many digital recording / reproducing apparatuses for general use record compressed bit streams that have been digitally transmitted or broadcast as they are. In this case, information exchange between the receiving device 3 and, for example, the second recording / reproducing device 6 is preferably performed in a digital manner according to the IEEE 1394 standard as described above. The recording medium can be various media such as a removable disk such as a digital video disk and a disk built in an apparatus such as a hard disk as well as a tape. As described above, the first recording / reproducing device 4 may be a hard disk, and the second recording / reproducing device 6 may be a removable disk as a medium.

FIG. 4 is a circuit block diagram of the digital recording / reproducing apparatus. In particular, it is suitable for a recording medium using a disk. 41 is a recording circuit, 4101 is an input terminal for signals to be recorded,
Reference numeral 4102 denotes storage means such as a semiconductor memory, 4103 denotes an encryption circuit, 4104 denotes an input terminal for an encryption key, 4105 denotes a recording encoding circuit, 4106 denotes an output terminal for a signal to be recorded on the recording medium, 4107 denotes a medium detection circuit, 4108 Is a control detection circuit, 4109 is a recording control circuit, 411
0 is an input / output terminal for a control signal, and 4111 is an output terminal for a control signal. 42 is a reproduction circuit, 4201 is a reproduction signal input terminal, 4202 is a reproduction / decryption circuit, 4203 is a block reproduction circuit, 4204 is a storage means such as a semiconductor memory, 4205 is an error correction circuit, 4206 is an encryption / decryption circuit, 4207 is Key input terminal for decrypting the encryption, 4208 is a signal output circuit, 42
09 is an output terminal for sending a reproduction signal to a receiver, 4210 is a control signal detection circuit, 4211
Is a clock, 4212 is a reproduction control circuit, 4213 is a control signal input / output terminal, and 4214 is a control signal output terminal.

FIG. 5 is a block diagram showing the periphery of the recording medium of the recording / reproducing apparatus. 43 is a recording / reproducing unit,
Reference numeral 4301 denotes an input terminal, 4302 denotes a recording amplifier, 4303 denotes a recording medium drive equipped with a recording medium such as a hard disk, a video disk, and a video tape, 4304 denotes a reproduction amplifier,
Reference numeral 4305 denotes an output terminal, 4306 denotes a mechanism control circuit, and 4307 denotes an input terminal.

First, the operation will be described with reference to FIG. The recording circuit 41 will be described. Information to be recorded is input from the input terminal 4101. This is because the first multiplex circuit 305 of FIG.
It is supplied from The information after the transmission cipher is decrypted by the descramble circuit 304 is, of course, within the scope of the present invention when it is supplied without being decrypted.

In the case of the second recording / reproducing apparatus 6, this information is further supplied via the input / output terminal 306, and the output of the information output terminal 4209 reproduced by the reproducing circuit 42 described later is also the input / output terminal shown in FIG. To 306. Therefore, in the second recording / reproducing apparatus 6, 4101 and 4209
Can be combined into a single input / output terminal. Of course, this does not necessarily mean that there is only one signal line, but it may be a plurality of unidirectional or bidirectional signal lines. It may be defined by the IEEE 1394 standard.

The input information is temporarily stored in the storage unit 4102 for each block. In addition to digital information such as video and audio, various control information as shown in FIG. In the case of broadcasting, for example, it is given by the management information giving circuit 16 of FIG. This is given to the control detection circuit 4108 to detect control information. As will be described in detail later, the recording control circuit 4109 determines whether or not this signal can be recorded based on this, whether or not to encrypt the signal, and the result is the encryption circuit 4103. To the recording encoding circuit 4105.

On the other hand, information such as video and audio in the storage unit 4102 is encrypted in the encryption circuit 4103 according to the control signal from the recording control circuit 4109 as necessary. Encryption is performed based on information from the input terminal 4104, for example. This is a device key such as an identification number of the device, a user key such as a personal ID read by attaching an IC card held by the user to the device, or content randomly generated for each information (content) to be recorded. Keys are used. Copy control information means that recording is prohibited Copy Never
For example, Copy One Generation, which means that only one generation is authorized,
Since high security is required, encryption may be performed so that it is not used by a third party when performing temporary recording with the conditions described above.

When encryption is performed in units of programs (contents), the key may be changed over time in the same content, for example, the key may be changed in units of sectors. The encrypted information is given to the recording encoding circuit 4105. In the recording encoding circuit 4105, the recording control circuit 410
Based on the control information from No. 9, if recording is not performed, the information is blocked here. If recording is performed, modulation suitable for the medium to be used is performed and output to the output terminal 4106.

In addition to the copy control information, the current time of recording output from the clock 4211 is also given from the recording control circuit 4109 to the recording encoding circuit 4105. When recording is possible,
This is also recorded at the same time if necessary. If the current time is included in the received information, it may be used, or the clock 4211 may be calibrated with the received information.

Further, the information signal at the output terminal 4106 is input to the input terminal 43 of the recording / reproducing unit 43 shown in FIG.
Is given to 01. This signal is amplified by the recording amplifier 4302 so that the laser generating element and the magnetic head can be driven, and then recorded on the recording medium as described above by the recording medium drive 4303. A mechanism control circuit 4306 such as a motor for driving the recording medium drive 4303 controls the recording medium by a control signal from the input terminal 4307.

The output of the recording control circuit 4109 shown in FIG. 4 is given to the output terminal 4111. If necessary, this may be given to the input terminal 4307 in FIG. 5 and when the information forbidden to be recorded including the temporary recording described above is inputted, the mechanism control circuit 4306 may be instructed to stop the recording operation. In addition, an input / output terminal 4110 in FIG. 4 performs input / output of a control signal to / from an external device. For example, there is a method in which control information is not detected by the control detection circuit 4108 but is provided from the outside separately from data such as video and audio, which is used in this case. In the case of the second recording / reproducing apparatus 6, it can be shared with the input terminal 4101 and the output terminal 4209 in accordance with the IEEE 1394 standard.

Next, an operation when reproducing recorded information will be described. Recording medium drive 4303 in FIG.
The information signal reproduced from is amplified to a level that allows signal processing in the subsequent stage by the regenerative amplifier 4304 and then output to the output terminal 4305. A control signal from the output terminal 4214 in FIG. 4 is input to the input terminal 4307 to control the mechanism control circuit 4306. This is generated by the reproduction control circuit 4212. Previous recording control circuit 4109 and this reproduction control circuit 42
12 is actually on the same semiconductor device, and in this case, the output terminals of 4111 and 4214 can be made common.

The information signal at the output terminal 4305 in FIG. 5 is applied to the input terminal 4201 of the reproduction circuit 42 in FIG. This is supplied to the reproduction decoding circuit 4202. Here, the modulation applied on the recording side for recording / reproducing on the medium is demodulated, the waveform is equalized, and the data is determined by the clock. Next, the block reproduction circuit 4203 detects a synchronization signal, an ID signal, etc., and the reproduction data is temporarily stored in a predetermined position of the storage means 4204 based on the detection. The error correction circuit 4205 detects an error in the sign generated in the recording / reproducing process and corrects it to a correct value by a calculation operation from the stored data. The data after error correction is given to the encryption / decryption circuit 4206. This is for decrypting the recording encryption performed by the previous encryption circuit 4103 during recording. Here, decryption is performed using a device key of the apparatus from the input terminal 4207, a user key such as a personal ID, or a content key. If this is not a predetermined one, normal decryption is not performed and viewing is impossible. Accordingly, although the recorded device or user can view it, it is extremely difficult for another device or user to reproduce and view the recorded medium. The decryption key from the input terminal 4207 is the encryption information 111 shown in FIG. 6B later.
Or obtained by decrypting a cipher from this.

On the other hand, the control signal detection circuit 4210 detects, for example, copy control information, recording time, and the like from the data subjected to the previous error correction. Next, the reproduction control circuit 4212 determines whether or not reproduction output is possible based on the detected information and the current time from the clock 4211 and controls the output of the signal output circuit 4208. Alternatively, the encryption / decryption circuit 4206 is operated or stopped. For example, when there is a time limit in the period of reproduction and viewing and this has passed, the signal output circuit 4208 does not output at least information that can be normally viewed. If necessary, control information may be sent from the output terminal 4214 to the input terminal 4307 in FIG. 5 to stop the reproduction operation of the recording medium drive 4303 itself.

When it is permitted to output the reproduced information, this information is given to the output terminal 4209 and supplied to the display 5 via the receiving device 3 of FIG. Encoding circuit 1 in FIG.
2 is performed by the decoding circuit 30 of the receiving device 3.
8 is restored. For this reason, the user can view the information content. The decoding circuit 308 may be built in the display 5.

When copy control information or the like is different from what has been described so far, when the digital watermark is embedded in the video information, the same control may be performed using the information detected from the digital watermark during reproduction.

Of course, the watch 4211 is required to have a certain degree of accuracy. Anything that can be easily changed by the user's malicious intentions will not serve the purpose. It is desirable that the time information from a broadcasting station or the like be controlled. If the time is changed intentionally, the apparatus may not be operated thereafter.

The input / output terminal 4213 exchanges control information with an external device. For example, it is used when the reproduced information is recorded on an external recording device. Input / output terminal 411
0 and 4213 can be shared. In the second recording / reproducing apparatus 6, for example, IE
According to the EE 1394 standard, information can be exchanged in one system including information on the input terminal 4101 and the output terminal 4209, or wirelessly using infrared rays or the like.

A control signal given from the reproduction control circuit 4212 to the recording encoding circuit 4105 instructs, for example, erasure of information during reproduction. As will be described later, it is used when information that has passed the time limit for viewing is deleted, and information that has been reproduced once is deleted regardless of the time limit.
When moving the reproduced information to another recording medium, it is necessary to erase it after reproduction, and this is also used at this time. In the case where the recording medium is a disk or the like, the recording encoding circuit 4 according to this control signal
105 generates a meaningless signal as information and erases the information by recording it on the medium.
Alternatively, encryption information such as an encryption key is deleted. In this case, the recording medium must be erasable. The medium detection circuit 4107 is provided for this purpose. This is effective for an apparatus in which a recording medium can be removed, such as the second recording / reproducing apparatus 6. In the case of recording information that is allowed to be recorded on the condition that it is to be deleted, recording is not performed if a medium such as a CD-R that cannot delete information is attached. Also, the reproduction operation is stopped when information is moved from a medium that cannot be erased. These are realized by sending control signals from the medium detection circuit 4107 to the recording encoding circuit 4105 and the reproduction control circuit 4212. The above is the basic operation description of FIG. 4 and FIG.

Next, FIG. 6 is a block diagram illustrating a configuration example of the control information signal in the present embodiment. 6A shows control information received by the receiving device 3 and input to the first recording / reproducing device 4 or the second recording / reproducing device 6 and detected by the control detection circuit 4108 on the recording side. . FIG.
FIG. 6B shows control information that is rewritten as necessary based on the control information shown in FIG. 6A in the recording encoding circuit 4105 and is added to the recording medium and recorded on the recording medium. Control information shown in FIG. 6B is recorded in advance in package software or the like. Among FIG. 6B, FIG.
Items based on the information in a) are associated with the same numbers. For example, in the case of a tape medium, it is sufficient that one piece of information shown in FIG. 6B is recorded on one recording track. Naturally, the information is recorded in a fixed relationship with information data such as video and audio, and can be easily reproduced. Can be separated.

The operation of the embodiment of the present invention will be described while describing the contents of FIG. 6 in comparison with the circuit block diagram of FIG. 4 as necessary. In FIG. 6B, the program number 100 indicates what number program is in the medium.

Sector information 101 is a sector number obtained by dividing a program by a predetermined unit when recording on a medium. The division may be a fixed unit, for example, a unit of 2 kbytes, or a fixed unit of information, for example, a unit for division when encoding. The number may be given in the program or may be a serial number for the entire recording medium. Recording time 107 to be described later
Information such as b is added in units of sectors. The time information 102 indicates how long the recorded part has passed since the start of the program. The above has been added when recording information on a recording medium.

The type 103b indicates attribute information such as whether the program is sold, rented, self-made, or broadcast. As indicated by reference numeral 103a in FIG. 6 (a), this may be recorded as it is if it has been added from the transmission stage.

Next, the copy control 104a in FIG. 6A indicates whether or not the information can be recorded on the medium. Copy Never (copy prohibited), Copy One Generation (copy authorization for one generation only)
, Copy Free (copy authorization) is selected and determined by the copyright holder, such as the creator of the information. In broadcasting, it is often given by the management information adding circuit 16 shown in FIG.
The copy control 104b shown in FIG. 6B is obtained by rewriting the recording / coding circuit 4105 shown in FIG. 4 as necessary based on the information 104a. 104a is Copy
If it indicates Free, you can record it as it is. When indicating Copy One Generation, in principle, copy and record as Copy No more (copied once with Copy One Generation, copy prohibited beyond this). If the temporary recording described later is allowed, Copy One G
It is temporarily recorded as either eneration or rewritten as Copy No More. If 104a indicates Copy Never, recording is not possible in principle, but if temporary recording is permitted, recording is performed with Copy Never. If the information software is provided on a recording medium,
The right holder records it at the time of creation. That is, Copy Never, Copy One Generation, Copy No
Since there are a total of four states, More and Copy Free, it can be transmitted with 2-bit information. Copy
Never is (1,1), Copy One Generation is (1,0), Copy No More is (0,1)
, Copy free is (0, 0).

APS 105a is a copy control information (APS; Analogue Protec) to analog recording device.
tion System; corresponding to an analog copy control signal). For example, this is disclosed in JP-A-6.
Whether or not copying to the analog recording apparatus is controlled by adding a pseudo sync pulse to the analog video signal as described in Japanese Patent Application Laid-Open No. 1-288582. Third recording / reproducing apparatus 7
This will be described later again in relation to the operation of. This may be recorded as it is as the APS 105b. The previous copy controls 104a and 104b and APSs 105a and 105b are one of the most important elements in the present invention in FIG.

Pause 106a indicates whether or not temporary recording can be performed when the copy control information 104a indicates Copy Never. Temporary recording is called a Pause function because it works like a pause for a certain period of time. For example, if temporary recording is permitted, “0
"If it is prohibited, it can be transmitted in 1 bit if it is set to" 1 ", etc. This allows the copyright holder to manage whether or not temporary recording is possible.

Furthermore, temporary recording may be permitted for the information of Copy One Generation, and the use of this bit may be used to control whether temporary recording is possible. When this is “1” which does not permit temporary recording, the copy control information is rewritten as Copy No More and recorded. If “0”, which allows temporary recording, copy control information is recorded as Copy One Generation, or is rewritten as Copy No More, and if it is within the time limit when played back and output. , Copy One Generation and the signal output circuit 4208 in FIG.

In either case, when “0” is recognized for temporary recording, it may be recorded as “1” by rewriting it with the recording encoding circuit 4105 of FIG. It is possible to solve the problem of being repeatedly recorded temporarily in another device within the time limit.

The time 107a is, for example, the current time at the time of broadcasting given by the management information adding circuit 16 of FIG. This may be recorded as it is as the recording time 107b, or the clock 42 in FIG.
11 may be calibrated and recorded. This recording is performed, for example, in units of sectors.
For example, the temporary recording of information in which the copy control information is set to Copy Never has a time limit for reproduction and viewing, but the times 107a and 107b are important in performing this management.

The broadcast system 108a includes HD information (HD; High Definition; high definition), SD information (SD
; Standard Definition; standard definition), etc., indicating the broadcasting system used by the information. This may be recorded as it is as 108b.

In the case of Copy Never information, the Pause time 109a means a time limit for playback and viewing after temporary recording. Since this is generally as short as 90 to 120 minutes, it may be inconvenient for the user. For example, if you record temporarily at midnight, you must watch it before going to bed. So, for example, if 3 bits are added as Pause time 109a,
Various time settings can be made. “001” is 90 minutes, “010” is one day, “011” is one week, “100” is one month, “101” is six months, “110” is one year, “111” is unlimited, and so on. Thereby, the inconvenience of the user due to the short Pause time can be solved under the management of the copyright holder or the like. This may be recorded as it is as 109b. Copy On
This bit may also be used when temporary recording is permitted for e Generation information. After the temporary recording, the copy control information 104b remains in Copy One Generation during this period, and after the time limit has elapsed, it is rewritten as Copy No More. Alternatively, when the copy control information 104b is rewritten and recorded as Copy No More and played back within the time limit,
Opy One Generation is rewritten and output by the signal output circuit 4208 in FIG.

In FIG. 6B, the user identification 110 is recorded when a user-specific code is used so that it can be reproduced only by the same device or user as at the time of recording. Encryption information 1
11 is used when reproducing the information recorded by encryption and decrypting the encryption. When the data amount of the information itself is large, the code number may be recorded and the corresponding information stored in advance by the playback device may be extracted and used. The encryption key in the encryption circuit 4103 in FIG. 4 or the one further encrypted with the device key may be put here. The user identification 110 and the encryption information 111 are added when recording.

The above is recorded at relatively fine time intervals such as every frame of video or every fixed amount of data as necessary. The configuration of the control information signal shown in FIG. 6 is an example, and various configurations such as the configuration, the recording position on the medium, and the frequency can be applied. Further, in the present invention, all of the contents are not essential, and some of them may be omitted. Of course, the order is not limited to this.

Next, a configuration example of the decoding circuit 308 used in the present invention will be described with reference to the circuit block diagram of FIG. 7, and in particular, the movement operation for the third recording / reproducing apparatus 7 which is an analog recording apparatus will be described.

In FIG. 7, the terminals 309 and 310 may be the same as those shown in FIG. 30801 is an input terminal, 30802 is a decoding circuit for compression operation performed before transmission, such as MPEG, 30803 is a control information detection circuit, 30804 is an up converter, 30805 is a down converter, 30806 is a first switch, and 30807 is a second switch. 30808 is a resolution limiting circuit, 30809 is an APS addition circuit, 30810
Is a third switch, and 30811 is an input terminal.

The most important operation of the decoding circuit 308 is compression decoding, and therefore the decoding circuit 30802 is a representative component. However, since this is a circuit block that outputs information from the receiving device 3 to an external device, other than the decoding circuit 30802, such as signal format conversion, signal addition, resolution limitation, conversion to analog signal, etc. as necessary There are also a large number of components.

The input terminal 30801 is the output of the second demultiplexing circuit 307 shown in FIG. 3, for example, information currently being broadcast, the first recording / reproducing apparatus 4, or the first input from the input / output terminal 306. Reproduction information from the second recording / reproducing apparatus 6 is given. This is decoded by the decoding circuit 30802, and the compression operation such as MPEG performed before transmission is restored. Among them, at least information such as video and audio is up-converter 30804,
The down converter 30805, the first switch 30806, and the second switch 30807 are provided. At least control information is given to the control information detection circuit 30803. As described above, the output terminal 309 is suitable for outputting information to an HD-compatible display, and the output terminal 310 is suitable for outputting information to a third recording / reproducing apparatus 7 using conventional analog recording. Format conversion and the like are performed as follows.

In the embodiment shown in FIG. 6, the decoding circuit 30802 to the control information detection circuit 3080
3 shows that information is input, but the information may be directly input from the second demultiplexing circuit 307 shown in FIG. 3 to the control information detection circuit 30803. The control information detection circuit 30803 detects the APS 105 from the control information shown in FIG. 4 and gives the result to the APS signal addition circuit 30809. Further, the broadcasting system 108 is detected, and the result is given to the first switch 30806, the second switch 30807, and the third switch 30810. Further, limit information such as resolution is detected, and the result is displayed as a limit circuit 3080 such as resolution.
Give to 8. This control information was not entered in FIG. 4 in order to avoid complicated explanation,
If necessary, for example, it may be added as 1-bit information to limit the resolution as described below.

First, a case will be described in which the control information detection circuit 30803 determines that the information is SD information from the broadcasting system 108 of FIG. At this time, the first switch 30806 and the second switch 30
Reference numeral 807 denotes a lower side (denoted by b in the figure), and a third switch 30810 indicates an upper side (
The signal a) in the figure is selected and connected to the next component. This information is about 480 to 540 interlace signals (hereinafter referred to as 480i to 540i) in terms of the number of scanning lines.

Of the output of the decoding circuit 30802, the output sent from the output terminal 310 to the external third recording / reproducing device 7 or the like passes through the second switch 30807 as it is and is given to the APS adding circuit 30809. In the control information detection circuit 30803, from the APS 105 in FIG.
If a request to output by applying copy control information APS to an analog recording device is detected, AP
In the S addition circuit 30809, information is normally recorded in the external third recording / reproducing circuit 7 by adding a pseudo-synchronization signal as described in, for example, Japanese Patent Laid-Open No. 61-288582. Make it impossible.

Of the outputs of the decode circuit 30802, those sent from the output terminal 309 to the external display 5 (here, HD-compatible ones are preferred)
The number of scanning lines is converted to about 1080 interlace signals (hereinafter referred to as 1080i), and the number of scanning lines apparently corresponds to HD information. Thereafter, the signal is supplied to the output terminal 309 via the first switch 30806 and the third switch 30810.

Next, a case where the control information detection circuit 30803 determines that the information is HD information will be described. This information is, for example, about 1080 interlace signals (1080i) in terms of the number of scanning lines.
At this time, the first switch 30806 and the second switch 30807 are on the upper side (a in FIG.
) Of the third switch 30810 selects the signal on the lower side (b in the figure) on the drawing and connects it to the next component.

Of the output of the decode circuit 30802, the output sent from the output terminal 310 to the external third recording / reproducing device 7 or the like is first reduced in the number of scanning lines by the down-converter 30805 to be, for example, a signal of 480i to 540i. The pseudo-synchronization signal is added to the output terminal 310 via the second switch 30807 by the APS adding circuit 30809 as required.

Of the output of the decoding circuit 30802, the output sent from the output terminal 309 to the external display 5 passes through the first switch 30806 as it is, and the limiting circuit 3 for resolution etc.
0808 is given. When the control information detection circuit 30803 detects a request for limiting the resolution or the like when outputting HD information from the apparatus in an analog manner, for example, the resolution limiting circuit 30808 resamples or filters the horizontal direction, For example, 9
The vertical direction is limited to, for example, a progressive signal (hereinafter referred to as 540P) having about 540 scanning lines or 480P, 480i, 540i, or the like in the vertical direction. Thereafter, the signal passes through the third switch 30810 and is supplied to the output terminal 309. Since the quality of HD information is high, output in an analog format that can be easily processed by a third party is often avoided. Therefore,
This limitation may be performed when analog output is performed from the output terminal 309. Used especially when the copy control information is other than Copy Free.

Even if the information is HD information, if the resolution restriction is not required, the restriction information such as the resolution outputs the input information as it is without restricting the resolution. Or the third switch 3
This can also be realized by selecting the a-side input information in 0810.

In addition, when information of 480i, 540i, 540P (or less than 720P) is output from the output terminal 309 and input to the display 5, if the display 5 is HD compatible, it is up-converted here to obtain high-definition information. In many cases, it is displayed after being converted to this format. This up-conversion process can also be performed by a limiting circuit 30808 for resolution or the like.

A DA converter circuit that converts information into analog information has not been described so far, but the location is not particularly limited. If connected to the display by analog information, the third switch 30810 and the output terminal 309 are connected. Further, the APS adding circuit 30809 and the output terminal 3 are connected.
Between 10 and the like is conceivable. Of course, in the former case, the display 5 is outside the output terminal 309.
May be in front of. If it is connected to the display 5 by digital information, it is naturally inside the display 5. Even in this case, particularly when an analog output is provided on the display 5, there may be a case where a restriction such as resolution is required.

Next, an operation mode called “movement” or “move” will be described. This is because the information that the copy control information was Copy One Generation is recorded and becomes Copy No More,
Alternatively, after the temporary recording, the above-mentioned time limit is passed, and the copy No More is output and then applied. Even if it is Copy No More, if the number of recorded media is not increased, even if the media is changed, there is no disadvantage to the copyright holder. For the user, for example, means recorded on the hard disk for the first time is transferred to a tape and stored, which improves usability.

The conditions for performing this movement are as follows. (1) When recording on a new medium,
The information on the original medium cannot be reproduced and output from the original medium by erasing all or part of the information on the original medium. (2) There must be only one device to move to.

Of these conditions, (1) is, for example, in the case of a disk medium, the previous recording encoding circuit 41.
The purpose can be achieved by generating a meaningless code as information in 05 and overwriting the encrypted information 111, for example.

(2) When both the source device and the destination device are new digital recording devices, device authentication is performed between them by exchanging keys, etc., and this is only between the two devices. It may be established on a one-to-one basis. In this way, even if a bus is connected in addition to the destination device, there is no fear of recording there, and the number of recorded media will not increase. At the time of migration, the copy control information output from the migration source device may be rewritten as Copy One Generation so that recording can be performed by the migration destination device.
At this time, unlike the original Copy One Generation, it must be prevented from being recorded on a plurality of devices. If authentication as described above is performed, this can be satisfied.

However, it is necessary to consider the case where the apparatus connected as the destination is the third recording / reproducing apparatus 7 which is a conventional analog recording apparatus. This only supplies an analog signal and does not have the one-to-one device authentication function as described above.

Here, it is assumed that the source device is the first recording / reproducing device 4. When the second recording / reproducing apparatus 6 is the movement source, the functions of the first and second recording / reproducing apparatuses are merely reversed, and thus the description thereof is omitted.

Assume that the only device that functions as the destination is the third recording / reproducing device 7 connected to the output terminal 310 of FIG. That is, it is assumed that the second recording / reproducing apparatus 6 is not connected to the input / output terminal 306 or is not authenticated as a destination even if connected by a cable. It is assumed that the user gives an instruction to move with a command from the input terminal 314. The reproduction output from the first recording / reproducing apparatus 4 reaches the output terminal 310 through the above-described process and is given to the third recording / reproducing apparatus 7. If the copy control information originally imposes a restriction such as Copy One Generation, it may require the addition of APS to the conventional analog output, and cannot move to the third recording / reproducing apparatus 7 as it is. In the case of movement, a command is sent from the control circuit 311 to the APS adding circuit 30809 via the input terminal 30811 in FIG. 7, and FIG.
The APS signal is not added regardless of the content of the APS 105b. After the movement, the first recording / reproducing apparatus 4 uses the recording / encoding circuit 4105 to record a meaningless code as information in a corresponding portion of the recording medium so that further reproduction cannot be performed. with this,
Movement to an analog recording device can be realized. In this case, it is possible to move to a plurality of analog recording devices, and the subsequent copying can be repeated. However, in the case of a general-purpose analog device, it is rare that the quality is higher than a certain level, especially copying. There is no problem because the repetition of the process results in significant quality degradation.

Note that the APS in FIG. 4 is effective only when the copy control information is Copy No More, depending on the system, and may be used as information indicating whether or not recording to the analog recording apparatus is permitted at this time. In this case, when performing the movement operation instead of the recording, if the control information for adding the APS signal is detected according to the APS information detected by the control detection circuit 30803, the control information is added to the analog recording apparatus. There is a method for enabling the movement of information when it is impossible to move and information that is not added is detected. However, as described above, moving does not increase the number of recorded media, so there is no disadvantage to the copyright holder. Therefore, there is a method that enables movement without adding an APS signal regardless of the information of the APS. In the former, the input terminal 30811
To the APS additional circuit 30809 is not necessary. In addition, if the copy control information is Copy No.
In cases other than “More”, whether or not recording to the analog recording apparatus is permitted is determined separately, and the instruction from the control detection circuit 30803 to the APS addition circuit 30809 is Copy No Mor.
Other than e, it is determined according to the detected copy control information.

Next, consider a case where both the second recording / reproducing apparatus 6 and the third recording / reproducing apparatus 7 are connected as destination devices. It is assumed that authentication between the former and the first recording / reproducing apparatus 4 has already been established. As described above, since there is a limit to the quality of what is recorded with a general-purpose analog recording apparatus, it may be acceptable to move to both apparatuses. (However, movement to multiple digital recording devices is not allowed)
However, considering the original intention of movement, consider either case. First, there is a method for inquiring the user to which device to move. In response to the response command from the input terminal 314, the destination device is selected.

If the second recording / reproducing apparatus 6 is selected, a command is sent from the control circuit 311 to the APS adding circuit 30809 via the input terminal 30811, regardless of the content of the APS 105b in FIG.
The copy control information of information to be sent to the second recording / reproducing device 6 is rewritten and output by Copy One Generation and the first recording / reproducing device 4. After the movement to the second recording / reproducing apparatus 6, the information on the corresponding part in the first recording / reproducing apparatus 4 cannot be reproduced any more.

If the movement to the third recording / reproducing apparatus 7 is selected, the APS adding circuit 3 is recorded so that recording can be performed here.
In 0809, an APS signal is not added, and the device authentication established between the first and second recording / reproducing devices is discarded, and no movement is performed between them. Thereafter, the information of the corresponding part in the first recording / reproducing apparatus 4 makes further reproduction impossible.

It is also possible to automatically set the destination device instead of letting the user select it. Any of these may be selected. However, if the second recording / reproducing apparatus 6 that can be limited to only one destination is selected with priority, there is no problem of increasing the number of recorded media.

Next, consider a case where two recording / reproducing functions are provided in the same recording / reproducing apparatus. It is called a so-called double deck. In the block diagram showing an example of the entire digital information transmission / reception recording system of FIG. 8, the second recording / reproducing apparatus 6A corresponds to this, one being a digital recording / reproducing apparatus and the other being a conventional analog recording / reproducing apparatus. And The digital recording / reproducing apparatus 6A1 of the second recording / reproducing apparatus 6A may have the same configuration as the second recording / reproducing apparatus 6 of FIG. 1, and the analog recording / reproducing apparatus 6A2 is the third recording / reproducing apparatus of FIG. The same configuration as in FIG.

The digital recording / reproducing device 6A1 and the analog recording / reproducing device 6A2 may independently perform recording / reproducing operations and exchange information signals with the receiving device 3. In addition, information signals recorded on the recording medium can be exchanged between the digital recording / reproducing apparatus 6A1 and the analog recording / reproducing apparatus 6A2, and copying and moving operations can be performed. Since the main point of the present invention is the movement operation to the analog recording apparatus, the movement operation from the digital recording / reproducing apparatus 6A1 to the analog recording / reproducing apparatus 6A2 will be described below. The second recording / reproducing apparatus 6A is a new apparatus that will appear in the future. Therefore, it is possible to set a new operation even in a portion that handles analog signals.

In the embodiment of FIG. 8, the first is that at least when the above movement is performed, the signal output to the outside of the second recording / reproducing apparatus 6A in the analog signal format depends on the content of the APS 105b of FIG. First, an APS signal is added so that recording or movement cannot be performed on an externally connected analog recording / reproducing apparatus. Also, authentication with the externally connected digital recording / reproducing apparatus is not performed, and if it has already been performed, it is discarded. As a result, the moving destination can be limited to one internal analog recording / reproducing apparatus 6A2. When moving
The corresponding information in the digital recording / reproducing apparatus 6A1 is erased, or only reproduction information at a level that is not practical can be obtained.

In the previous example, the case where the APS addition circuit 30809 is inside the receiving apparatus 3 as shown in FIG. 7 has been described. In the present embodiment, it is necessary inside the digital recording / reproducing apparatus 6A1 of FIG. In this case, the configuration is as shown in the circuit block diagram of FIG. That is, the APS addition circuit 4215 is provided at the subsequent stage of the signal output circuit 4208. While this is controlled by the reproduction control circuit 4212, the information output to both the output terminals 4216 and 4217,
It is determined whether or not to add an APS signal separately to each. In the case of movement, an APS signal is added to the information given to the output terminal 4216 for outputting to the outside of the apparatus, and an APS signal is added to the information given to the output terminal 4217 for giving to the internal analog recording / reproducing apparatus 6A2. Do not.

Information on the output terminals 4216 and 4217 becomes analog at any stage. For this purpose, the DA conversion circuit may be located at any position, for example, before or after the APS addition circuit 4215.

In this embodiment, after moving to the analog recording / reproducing apparatus 6A2, copying can be performed with an external analog recording / reproducing apparatus. Then, next, the method of making this impossible is described. As a result, the number of recording media does not increase even when the recording medium is moved to the analog recording apparatus, and the original operation of the movement can be realized completely.

This is because the output terminals 4216 and 4217 in the circuit block diagram of FIG.
An APS signal is added to both pieces of information. The internal analog recording / reproducing apparatus 6A2 does not respond to the APS signal when moving. That is, the above-mentioned JP-A-61-2
As described in Japanese Patent No. 88582, the APS signal is, for example, an AGC (Automatic Gain) of a luminance signal by adding a pseudo sync pulse to a temporally specified position in a vertical blanking period of a video signal. Control (automatic gain control) circuit malfunctions.
For this reason, normally, only a reconstructed image that cannot be put into practical use can be obtained even if recording is forced.

In the present embodiment, in the case of movement, the AGC circuit of the analog recording / reproducing apparatus 6A2
When amplitude detection for gain control is performed, amplitude detection is not performed only during a period in which an APS signal is added. Alternatively, only the signal input to the amplitude detection circuit is removed using the gate circuit.

As a result, recording is performed on the medium in a state where an APS signal is added during movement and in a state where a normal image can be obtained during reproduction. Therefore, it is impossible to record from this point to another analog recording apparatus and increase the number of media, and there is an effect of making use of the original intention of movement. Further, as described above, since the analog recording / reproducing apparatus 6A2 of FIG. 8 will appear in the future, the information recorded with the APS signal added is moved between the analog recording / reproducing apparatuses 6A2, that is, the original. It is also possible to perform a one-to-one movement between only two devices without increasing the number of recorded media on the assumption that the above information is erased.

Next, copy control information for an analog recording apparatus can be considered in addition to the APS signal as described above. In particular, in the second recording / reproducing apparatus 6A shown in FIG. 8, when copying or moving between two built-in recording / reproducing apparatuses, there is no problem of a decrease in signal level at the time of delivery. There is no need to go through the AGC circuit on the recording / reproducing apparatus 6A2 side. The APS signal using the pseudo sync pulse is premised on a device that performs signal processing in an analog manner. Along with the advancement of digital circuit technology, signal processing is generally digital even in an analog recording apparatus, and there is a contradiction here.

Therefore, a new copy control signal for an analog recording apparatus that will appear in the future is required.
The copy controls 104a and 104b shown in FIG. 6 have been described as copy control signals for the digital recording apparatus. This is CGMS-D (Copy Generation Management S
ystem Digital). On the other hand, what corresponds to CGMS-A (Analogue) is examined. For example, copy control information 104a, 10 consisting of 2 bits.
The same as 4b may be used. The reason for providing a bit different from CGMS-D is to enable the contents of copy control set on the producer side to be changed depending on whether analog recording or digital recording is performed.

Even in an analog recording device, it will be possible to design copy control in response to the CGMS-A, which will appear in the future, and the above-described problem of the APS signal can be solved. The operation when moving to the analog recording / reproducing apparatus using the CGMS-A conforms to the operation of the apparatus using the APS signal. That is, when moving within the same device, only the information to be given to the destination device may be CGMS-A as information corresponding to Copy One Generation, and while outputting with information corresponding to Copy No More, Recording may be performed as it is only with a device that has already been authenticated. A mentioned above
The same effect as when using the PS signal can be obtained. When performing the above operations, CGM
The circuit configuration for rewriting SA is not particularly shown, but it may be arranged instead of this at the position of the APS additional circuit 4215 in FIG.

In FIG. 8, the apparatus having a plurality of recording / reproducing apparatuses in the same apparatus is referred to as the second recording / reproducing apparatus 6A. However, the first recording / reproducing apparatus 4 built in the receiving apparatus 3 is configured in this way. They may be included in the scope of the present invention. Even when the digital recording / reproducing apparatus 6A1 does not have a recording function and the analog recording / reproducing apparatus 6A2 does not have a reproducing function, the movement operation as described so far is possible, which is also within the scope of the present invention.

1... Information providing station 16 such as a broadcasting station... Management information giving circuits 104 a and 10
4b: Copy control 105a, 105b: APS (Analogue Protection System)
2... Relay station 3... Receiving device 308... Decoding circuit 30803
Control information detection circuit 30809 APS addition circuit 4 First recording / reproducing device 4
DESCRIPTION OF SYMBOLS 1 ... Recording circuit 4108 ... Control detection circuit 4109 ... Recording control circuit 42 ...
... Reproduction circuit 4208 ... Signal output circuit 4210 ... Control detection circuit 4212 ...
Reproduction control circuit 4215... APS addition circuit 43... Recording / reproduction unit 5... Display 6 6 A second recording / reproduction device 6 A 1.
A2... Analog recording / reproducing device 7... Third recording / reproducing device

Claims (4)

  In the digital information receiving apparatus for receiving the digital video information transmitted together with the copy control information, recording it on the recording medium, and reproducing from the recording medium,
  The copy control information includes at least first copy control information that controls whether or not the digital video information can be copied, and second that controls whether or not the copy can be performed by adding an analog copy control signal in an analog output of the digital video information. Copy control information of
  Receiving means for receiving the digital video information;
  Recording and reproducing means for recording the received digital video information on the recording medium and reproducing the recorded digital video information from the recording medium;
  Analog signal output means for adding the analog copy control information and the analog copy control signal as analog signals to the received digital video information or digital video information reproduced by the recording / reproducing means;
  Control means for controlling the recording / reproducing means and the analog signal output means by the copy control information,
  When the first copy control information of the received digital video information indicates that only one generation is allowed to be recorded, the control means sets the received digital video information as a copy prohibition for the first copy control information. Record,
  When the received digital video information or the digital video information reproduced from the recording / reproducing means is output as an analog signal from the analog signal output means, the analog video signal is output in accordance with first copy control information of the output digital video information. The analog copy control information is added to the signal, and the addition of the analog copy control signal to the analog signal is controlled by a combination of the first copy control information of the digital video information to be output and the second copy control information. ,
  When the first copy control information of the digital video information to be output indicates that copy is prohibited any more, analog copy control information indicating that copy is prohibited is added to the analog signal; and Validating the second copy control information, controlling the addition of the analog copy control signal according to the second copy control information, and outputting,
  When the first copy control information of the output digital video information indicates that only one generation is allowed to be recorded, analog copy control information indicating that only one generation is allowed to be recorded is added to the analog signal; and 2. A digital information receiving apparatus, wherein the second copy control information is not validated and is output without adding the analog copy control signal.   In a digital information recording / reproducing method for receiving digital video information transmitted together with copy control information, recording it on a recording medium, and reproducing from the recording medium,
  The copy control information includes at least first copy control information that controls whether or not the digital video information can be copied, and second that controls whether or not the copy can be performed by adding an analog copy control signal in an analog output of the digital video information. Copy control information of
  Receiving the digital video information;
  A recording / reproducing step of recording the received digital video information on the recording medium and reproducing the recorded digital video information from the recording medium;
  An output step of outputting the received digital video information or the digital video information reproduced from the recording medium as an analog signal;
  When the first copy control information of the received digital video information indicates that only one generation is allowed to be recorded, the received digital video information is recorded with the first copy control information no more copy prohibited,
  When the received digital video information or the reproduced digital video information is output as an analog signal, the analog copy control information is added to the analog signal according to the first copy control information of the digital video information to be output, and the digital signal is output Controlling the addition of the analog copy control signal to the analog signal by a combination of the first copy control information of the video information and the second copy control information;
  When the first copy control information of the digital video information to be output indicates that copy is prohibited any more, analog copy control information indicating that copy is prohibited is added to the analog signal; and Validating the second copy control information, controlling the addition of the analog copy control signal according to the second copy control information, and outputting,
  When the first copy control information of the output digital video information indicates that only one generation is allowed to be recorded, analog copy control information indicating that only one generation is allowed to be recorded is added to the analog signal; and 2. A digital information recording / reproducing method, wherein the second copy control information is not validated and the analog copy control signal is not added.   In a digital information receiving apparatus that receives digital video information, records it on a recording medium, and reproduces it from the recording medium,
  The digital video information is information transmitted together with copy control information for controlling whether or not digital video information can be copied and APS control information for controlling addition of a pseudo sync pulse signal in an analog output of the digital video information,
  Receiving means for receiving the digital video information;
  Recording and reproducing means for recording the received digital video information on the recording medium and reproducing the recorded digital video information from the recording medium;
  Analog signal output means for outputting received digital video information or digital video information reproduced by the recording / reproducing means as an analog signal;
  Control means for controlling the recording / reproducing means and the analog signal output means,
  The control means includes
  When the copy control information of the received digital video information indicates that only one generation is allowed to be recorded, the received digital video information is recorded with copy control information no more copy prohibited,
  When outputting the received digital video information or the digital video information reproduced from the recording / reproducing means as an analog signal from the analog signal output means,
  When the copy control information of the digital video information to be output indicates that copy is prohibited any more, CGMS information indicating that copy is prohibited is added to the analog signal, and the APS control information is added. It is set as valid, and the addition of the pseudo sync pulse signal is controlled and output according to the APS control information,
  When the copy control information of the digital video information to be output indicates that only one generation can be recorded, CGMS information indicating that only one generation can be recorded is added to the analog signal, and the APS control information is made valid. The digital information receiving apparatus outputs the pseudo sync pulse signal without adding the pseudo sync pulse signal.   In a digital information recording / reproducing method for receiving and recording digital video information on a recording medium and reproducing from the recording medium,
  The digital video information is information transmitted together with copy control information for controlling whether or not digital video information can be copied and APS control information for controlling addition of a pseudo sync pulse signal in an analog output of the digital video information,
  Receiving the digital video information;
  A recording / reproducing step of recording the received digital video information on the recording medium and reproducing the recorded digital video information from the recording medium;
  An output step of outputting the received digital video information or the digital video information reproduced from the recording medium as an analog signal;
  When the copy control information of the received digital video information indicates that only one generation is allowed to be recorded, the received digital video information is recorded with copy control information no more copy prohibited,
  When outputting received digital video information or reproduced digital video information as an analog signal,
  When the copy control information of the digital video information to be output indicates that copy is prohibited any more, CGMS information indicating that copy is prohibited is added to the analog signal, and the APS control information is added. It is set as valid, and the addition of the pseudo sync pulse signal is controlled and output according to the APS control information,
  When the copy control information of the digital video information to be output indicates that only one generation can be recorded, CGMS information indicating that only one generation can be recorded is added to the analog signal, and the APS control information is made valid. And a digital information recording / reproducing method characterized in that the pseudo sync pulse signal is output without being added.

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