JPH0734290B2 - Recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICABILITY The present invention can apply a predetermined limitation to a copying operation or charge a fee depending on the industrial or economic value of information to be recorded or copied or the degree of privacy. The present invention relates to a recording device.

2. Description of the Related Art In recent years, various techniques as preventive measures have been disclosed from the standpoint of protection against copying of copyrighted works. In a digital audio tape recorder (hereinafter referred to as DAT), in order to physically limit dubbing (copying via a digital interface) of a digital information signal with a particularly low deterioration, for example, a sampling frequency peculiar to a compact disc 4
The method of controlling the recording of the main information by disabling the input processing at 4.1 kHz or by the identification information indicating the propriety of copying inputted together with the audio signal which is the main information is beginning to be used.
Also, as an effective method for dubbing analog information signals, a recording device detects this and stops recording by cutting a specific frequency band of an audio signal for which copying is prohibited with a steep filter to make a mark. The method etc. are proposed.

However, the conventional identification information is unilaterally fixed whether or not copying is possible, and there is no input device or update recording device for billing information, so it is recorded or copied. It has not been possible to impose a predetermined limit on the copying operation or charge a fee depending on the industrial or economic value of information or the degree of privacy.

The present invention solves the above-mentioned conventional problems, and provides a recording apparatus capable of controlling recording of main information by identification information of main information input together with main information and recording control information input separately from the identification information. The main purpose is to do.

Another object of the present invention is to provide a recording device that can form a charging system that also uses an external recording device.

Means for Solving the Problems In order to solve the above problems, the recording apparatus of the present invention comprises a first input means for inputting a signal containing main information and its identification information, and a second input means for inputting recording control information. An input means, a first recording means for recording the main information and the identification information on a first recording medium, and a system control means for controlling the system and updating the information are provided.

Further, in claim 2, the first input means for inputting a signal containing main information and its identification information, the second input means for inputting recording control information, the main information and the identification information A first recording means for recording on a first recording medium, and a second recording means for updating and recording the recording control information.
The recording means and the system control means for controlling the system and updating the information are provided.

Operation The present invention has the above-mentioned configuration, and inputs the identification information input together with the main information to the system control means, and records the industrial information, the economic value of the main information or the degree of confidentiality or privacy of the main information, that is, It is possible to know the protection level of the copyrighted work required by the person who has the intellectual property right.

Further, the recording control information input separately from this can be input to the system control means to know the degree of copying permission for the person who wants to record the main information.

Using these two pieces of information, the system control means can control the recording of the main information. Further, the identification information can be updated according to the recording condition. Then, the main information and the identification information can be recorded on the first medium through the first recording device.

Further, according to the structure of claim 2, the system control means can control the recording of the main information and update the identification information according to the recording condition, and further update the recording control information.

The main information and the identification information can be recorded on the first medium by the first recording device. Also, the recording control information can be recorded on the second medium through the second recording means.

Examples Hereinafter, examples of the present invention will be described with reference to the drawings.

FIG. 1 shows a first application of the present invention to a rotary head type digital audio tape recorder (hereinafter referred to as DAT).
3 is a configuration diagram of the embodiment of FIG. In FIG.
Reference numeral 101 is a first input unit for inputting a signal composed of main information and its identification information, 102 is a main information processing unit, 103 is an identification information processing unit for updating identification information, and 104 is a second input unit for inputting recording control information. An input unit, 105 is a system control unit, 106 is a recording signal generation unit, and 107 is a first recording unit that records the output of the recording signal generation unit 106 on a recording medium.

FIG. 4 is a schematic diagram showing the first recording unit 106 in the DAT of FIG. In FIG. 4, 401a and 401b are rotary magnetic heads, 402 is a cylinder to which the rotary magnetic heads 401a and 401b are attached, 403a and 403b are tape guides, 404 is a magnetic tape as a recording medium, and 405a and 405b are recording media. A take-up supply reel and a take-up reel, and 406 is a cassette that houses a recording medium.

FIG. 5 is a schematic diagram showing the second input unit 104 in the DAT of FIG. In FIG. 5, 501 is a recording control card, 502a and 502b are guide rollers for detecting insertion of the recording control card 501, 503 is a capstan, 504 is a pinch roller, 505 is a magnetic head, and 506 is a recording control card. 501
Pad 507a, 507b for supporting the recording control card 501.

Regarding the recording apparatus of the present embodiment configured as described above,
The operation will be described below.

First, an outline of the DAT used as one embodiment of the present invention will be described.

As shown in FIG. 4, the DAT records a signal on the magnetic tape 404 by the two magnetic heads 401a and 401b that are attached so as to face the cylinder 402. FIG. 6 is a schematic diagram showing a recording signal format on the tape. In FIG. 6, MARGIN1 and MARGIN2 represent recording margins at both ends of the track, and SUB1 and SUB2 represent sub-data areas where time codes and program numbers are recorded.
1, ATF2 is recorded the signal to control the tape running
In the ATF (Auto Track Finding) area, MAIN represents the main data area for recording the audio signal which is the main information and the identification information indicating the attribute thereof.

FIG. 7 is a schematic diagram showing a data structure in which a part of the main data area (MAIN) is taken out. The main data area is composed of 128 pieces of 1-block data shown in FIG. One block is called Sync, Main ID, ID Parity, Main Data that is grouped into 8 bits.
Etc. consists of a total of 36 symbols (288 bits) of data. S
ync is a block synchronization signal and is arranged at the beginning of each block. The Main ID is identification information indicating the attribute of the main information, and is composed of identification information (W1) such as sampling frequency and emphasis characteristic and a block address (W2). ID Parity is the simple parity of W1 and W2. The Main Data is obtained by re-arranging the audio signal, which is the main information, by source encoding, interleaving, and adding an error correction code.

In this way, the identification information of the present invention is recorded as the Main ID in the main data area (MAIN), that is, the identification information indicating the attribute of the main information.

DAT when playing back a tape recorded in this way
The outline of the operation of the digital audio interface standard will be described below, and the digital signal format in the 2-channel mode of the digital audio interface standard will be described with reference to FIGS.
It will be explained with reference to the figure.

During reproduction, signals read from the tape are subjected to signal processing such as decoding and error correction, and main information and identification information are extracted. The identification information is supplied to the system control means, and the processing according to the content is performed. Main information, that is, voice signal is D / A
At the same time as being output as an analog signal through the converter, it is also output in the form of a digital signal. As a method of outputting a digital signal, a digital audio interface standard CP-340 defined by the Japan Electronic Machinery Manufacturers Association Standard (EIAJ) as shown in FIGS. 8 and 9 is used.
There is a digital signal format based on.

The digital signal format is constructed as follows.

The audio signal digitized as shown in FIG. 8 is time-axis compressed for each sample to form a subframe. In the case of the 2-channel mode, each subframe of channel 1 (CH1) and channel 2 (CH2) constitutes one frame together with a preamble which is a synchronization signal. In the case of stereo, channel 1 and channel 2 correspond to the left and right channels, respectively. Such a frame
Collect 192 pieces to form one block.

The preamble at the beginning of each subframe has three types of patterns: pattern B at the beginning of the block, pattern M before channel 1, and pattern W before channel 2 Also, the beginning of the frame can be detected.

Each subframe consists of 32 bits as shown in FIG. Of these, the first 4 bits of 0 to 3 are the preamble, the 4 bits of 4 to 7 are the auxiliary data (Aux),
20 bits 8 to 27 are audio data, and each bit 28, 29, 30, 31 is a valid flag (V), a user bit (U), a channel status bit (C), and a parity bit (P).

In the format thus defined, the identification information of the present invention can be assigned to the logical frame structure in which the channel status bits (C) are collected in 192 frames.

As described above, the digital audio interface can be used for the connection between the input / output devices and the identification information can be transmitted.

The operation of the recording apparatus of this embodiment will be described based on the above-mentioned outline of the conventional DAT.

A signal including main information and its identification information is input to the first input unit 101 in a format of a digital audio interface standard described later. The first input unit 101 is a receiving unit of a digital audio interface, demodulates a signal, and outputs main information to the main information processing unit 102 and identification information to the identification information processing unit 103. Main information processing unit 102
Adds an error correction code to the main information and performs signal processing according to the DAT format. The identification information is detected by the identification information processing unit 103, and information indicating the industrial or economic value of the main information to be copied or the strength of the degree of privacy is transmitted to the system control unit 105.

On the other hand, the recording control information is input to the second input unit 104 as follows. That is, in FIG. 5, when the recording control card 501 is inserted into the input section, the guide roller 5
02a and 502b detect this, and the system control unit 105 in FIG.
Command to start the capstan 503 and record control card 5
01 is pulled into the device. At that time, the recording control information recorded on the recording control card 501 is read by the magnetic head 505. Based on the recording control information indicating the degree or frequency of copying permitted in this way and the above-mentioned identification information, the system control unit 105 determines whether recording is possible using an algorithm as shown in FIG. judge. As a result of the determination, if the recording is not permitted, the recording signal generation unit 106 is prohibited from operating, and the subsequent processing is not performed. On the other hand, when the recording is permitted, the recording signal generation unit 106 is instructed to operate, and the identification information processing unit 103 is instructed to update the identification information according to the recording control information. The output results of both the main information processing unit 102 and the identification information processing unit 103 in the recording signal generation unit 106 are combined into a recording format and recorded in a recording medium via the first recording unit 107.

Next, an example of the determination algorithm in the system control unit 105 shown in FIG. 3 will be described.

When the main information is operated to be recorded via the digital audio interface (Start), the system control unit 105 records the main information from the identification information input in step 301 (Main ID) in FIG. , The protection level based on the economic value or the degree of confidentiality and privacy is judged to be A, B, or C, and branches accordingly.

When the protection level is A, recording is unconditionally permitted, and therefore the process directly proceeds to step 304 (Rec) to immediately start the recording operation.

When the protection level is B, the condition is further checked and the process branches. That is, in step 302 (Det Ctl) and step 303 (Ctl Inf), valid recording control information is input, and it is determined whether the input recording control information meets the conditions, and the process branches. If the result of determination is that the recording control information is valid and satisfies the conditions, step 304
In (Rec), the recording operation starts.

If the protection level is C or if the recording is not permitted in step 302 or step 303, the process proceeds to step 305 (Void) to prohibit the recording operation. In this case, it is possible to display that recording is not possible.

In step 304 (Rec), the identification information processing unit 103 updates the identification information according to the identification information and the recording control information, and the recording signal generation unit 106 outputs the output results of the main information processing unit 102 and the identification information processing unit 103. Are combined and recorded on the medium via the first recording unit 107.

As described above, the recording control of the main information and the update of the identification information are performed.

As the identification information in the first embodiment, the required level of protection related to the industrial or economic value of the main information to be copied or the degree of confidentiality or privacy, for example, whether copying is possible or not, the number of times copying is protected, Information such as copy generation and control information regarding billing can be applied.

Further, as the recording control information, information indicating the degree of permission of copying for protection, for example, information regarding whether or not prepaid copying fee is charged, information regarding a user, information regarding a recording medium, and the like can be applied.

The present invention provides a recording apparatus capable of realizing a new copy management system for controlling the copying of main information or the update recording of identification information by the combination of the above and the judgment by the system control means.

As an application example of this case, for example, a cassette for recording main information is provided with control information indicating whether or not copying of a copyrighted material is possible, thereby differentiating the price, whereby the copying can be charged. Further, the number of times of copying, which is the identification information, is updated each time copying is performed, and when the number of times of copying exceeds a predetermined value defined as control information, the number of times of copying can be limited by prohibiting recording.

FIG. 2 shows a block diagram of a second embodiment in which the present invention is applied to a DAT. In FIG. 2, blocks 101 to 107 are the same as in FIG. A second recording unit 200 updates and outputs the recording control information.

Regarding the recording apparatus of the present embodiment configured as described above,
The operation will be described below.

The process in which a signal including main information and its identification information is input to the input unit 101 and whether recording is possible or not is determined by the determination by the system control unit 105 is the same as that of the first embodiment of the present invention in FIG. 1 described above. Is. This solves the basic problem.

The difference from the first embodiment is that, as a result of the determination in FIG. 3, if the recording is permitted, the recording signal generation unit 106 is permitted to operate, and the identification information processing unit 103 is changed to the recording control information. The update processing of the corresponding identification information is instructed, the update processing of the recording control information according to the information from the identification information processing unit 103 is performed, and the updated recording control information is output via the second recording unit 200. This is where That is, in FIG. 5, the recording control information of the recording control card 501 is the magnetic head 505.
Read by. Then, it is updated by the system control unit 105 in response to the copy or in association with the identification information. When the recording of the main information is completed and the recording control card 501 is to be taken out, the capstan 503 is rotated in the direction of sending the recording control card 501 to the outside of the apparatus according to a command from the system control unit 105. At this time, the recording control card 501 is sent out and the updated recording control information is recorded on the recording control card 501 by the magnetic head 505.

As described above, the recording control of the main information, the updating of the identification information, and the updating of the recording control information are further performed.

The recording control information in the second embodiment indicates the degree or frequency at which copying is allowed for protection, for example, information regarding whether or not prepaid copying fee is charged, information regarding frequency of prepaid copying fee, update right of generation information, or Information about the right to update generational update limit information, information about users,
Information about the recording medium can be applied.

Not only can a copy management system that controls copying of the main information or update recording of the identification information be realized by the combination of these, but the system control means can determine the information, the generation information or the generation limit. The present invention provides an excellent recording apparatus that can realize a new billing system for copying because it is possible to manage information regarding the right to update information.

As one application example in this case, the recording control information can be recorded on the magnetic card. In this magnetic card, it is assumed that the copyable frequency S permitted by advance payment of the fee and the privilege information D indicating the privilege given to the operation manager of the accounting system for copying are recorded. It is also assumed that the identification information that is input along with the main information includes the protection level L and the copy generation G information. By inputting these pieces of information to the system control unit 105, both the control information and the identification information can be updated. At this time, the advance payment frequency S ′ updated by copying is expressed as follows using the function f (G, D) of the copy generation G and the ID information D in the system control unit 105.

S '= S-L * f (G, D) where L: protection level G: copy generation D: privilege information S, S': prepaid frequency The function f (G, D) in the formula can be set arbitrarily. is there. For example, if f (G, D) = G ² (content of D = non-privileged person) = 0 (content of D = privileged person), the copy frequency gradually decreased by the copying operation is zero for the privileged person. In the case of a non-privileged person, it changes depending on the information of the protection level L and the copy generation G. In this case, it is possible to define that the value increases sharply as the copy generation G increases with respect to the non-privileged person, that is, it becomes difficult to copy because the charging frequency increases. It is possible to prevent it from increasing arithmetically.

EFFECTS OF THE INVENTION As described above, according to the present invention, first input means for inputting a signal composed of main information and its identification information, second input means for inputting recording control information, the main information and the above First recording means for recording the identification information on the first recording medium;
The system control means for controlling the system and updating the information is provided, and the recording of the main information and the update recording of the identification information can be controlled by using the identification information and the recording control information. Therefore, the recording apparatus of the present invention can be used in a system for imposing a predetermined limitation on the copying operation or charging according to the industrial or economic value of information or the degree of privacy.

Further, by providing a means for recording the recording control information, it becomes possible to update both the identification information and the recording control information by the mutual relationship between the identification information and the recording control information when the main information is recorded, and it is possible to charge or copy the number of times. The management of can be configured to be more complete.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment in which the present invention is applied to a rotary head type digital audio tape recorder (DAT), and FIG. 2 is a configuration diagram of a second embodiment in which the present invention is applied to a DAT. 3 is an algorithm for determining whether recording is possible in the system control unit, FIG. 4 is a schematic diagram showing the first recording unit 106 in the DAT of FIG. 1, and FIG. 5 is a second input in the DAT of FIG. 6 is a schematic diagram showing the recording signal format on the tape, FIG. 7 is a schematic diagram showing the data structure in the main data area, FIG. 8 is a signal format in the digital audio digital interface standard, FIG. 9 is a signal format showing the contents of the subframe in FIG. 101 …… first input section, 102 …… main information processing section, 103 ……
Identification information processing unit, 104 ... Second input unit, 105 ... System control unit, 106 ... Recording signal generation unit, 107 ... First recording unit, 200 ... Second recording unit.

Claims (2)

[Claims] 1. A first input means for inputting a signal containing main information and its identification information, a second input means for inputting recording control information, and a first recording medium for storing the main information and the identification information. And a system control means for controlling the system and updating the information, and at least a record of the main information and an update record of the identification information by the identification information and the record control information. A recording device characterized by being controlled. 2. A first input means for inputting a signal containing main information and its identification information, a second input means for inputting recording control information, a first recording medium for storing the main information and the identification information. A first recording means for recording the recording control information, a second recording means for recording the recording control information, and a system control means for controlling the system and updating the information, and based on the identification information and the recording control information. A recording apparatus, wherein at least the recording of the main information, the update of the identification information, and the update of the recording control information are controlled.