JP2001195828A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively protect data to be protected from duplication and to record many pieces of the data with a recorder which makes the duplication of the original data difficult. SOLUTION: The recorder in the device has a flash ROM 10 and a hard disk device 11 and records the original data by separating the data to the flash ROM 10 and the hard disk device 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus that makes it difficult to copy original data.

In recent years, advances in technology have made it possible to develop devices for digitally transmitting video signals and audio signals and recording digitally. Digital recording devices such as DVHS digital video tape decks and DVD-RAM devices have become available. Has been

[0003] These digital recording apparatuses have a great feature in that the transmitted digital data can be recorded as it is, so that the data is not deteriorated. On the other hand, a copy of the original data can be easily created. Therefore, it is necessary to prevent data that should be protected from being copied, such as copyrighted data, from being easily copied.

[0004]

2. Description of the Related Art Conventionally, as an example of a method of protecting data to be protected from duplication, data to be protected from duplication is encrypted and transmitted, recorded in a recording medium in an encrypted state, and a managed decryption key is used. There is known a method using an encryption technique, such as reproducing using a decryption key, or reproducing using a managed decryption key, and then encrypting it again and recording it on a recording medium.

As another example of a method for protecting data to be protected from duplication, a method is known in which data is recorded on a built-in hard disk device so that the data cannot be taken out.

[0006]

However, in the protection by the encryption technique, there is a possibility that the data to be protected from the duplication may be decrypted due to the leakage of the decryption key or the progress of the decryption technique. Then, due to the nature of digital recording, it is possible to easily create a copy of the original data.

Further, the method of recording data on a built-in hard disk drive has a limited storage capacity, and the current technology is limited to protecting data for several tens of hours. However, there is a problem that the recorded data must be deleted, which is inconvenient.

In addition, it is technically easy to take out a built-in hard disk device from a recording device and make a copy of data therein, and the method of recording data on the built-in hard disk device is to protect it from duplication. There is a problem that it is not always effective as a means of protecting data to be protected.

In view of the foregoing, it is an object of the present invention to provide a recording apparatus capable of effectively protecting data to be protected from duplication and recording a large amount of data. I do.

[0010]

SUMMARY OF THE INVENTION A recording apparatus according to the present invention has a first recording apparatus and a second recording apparatus which are fixed so that a recording medium is unportable and cannot be easily removed. , And separates and records the original data in the first and second recording devices.

According to the present invention, a part of the original data is recorded in the first recording device which is fixed so that the recording medium is unportable and cannot be easily removed. Even if the data recorded in the recording device can be taken out to the outside, it is impossible to duplicate the original data only from the data recorded in the second recording device.

The data recorded in the first recording device may be a part of the original data, and most of the original data can be recorded in the second recording device. Even if the recording capacity is limited by the second recording device,
A recording device that is itself portable (for example, a cassette-type hard disk device) or a recording device that has a portable recording medium (for example, a DVD-RAM device or an MO device)
Or even if the second recording device is a non-portable recording device (for example, a fixed hard disk device), the third recording device itself (for example, A cassette type hard disk device) or a third recording device in which a recording medium is portable (for example,
When a DVD-RAM device or an MO device is provided, it is possible to cope with a recording time of several thousand hours.

[0013]

FIG. 1 is a block circuit diagram showing a main part of an embodiment of the present invention. In FIG. 1, reference numerals 1 and 2 denote rewritable non-volatile semiconductor memories which are fixed so that the recording medium is unportable and cannot be easily removed, for example, soldered and fixed on a main substrate. . The recording device 2 is used as a backup for the recording device 1 and records the same contents as the recording device 1, and is not essential.

Reference numeral 3 denotes a recording device for recording most of the original data other than the data recorded on the recording device 1. For example, a hard disk device, a DVD-RAM device, and an M
O device.

Reference numeral 4 denotes a recording device used to store data having a data amount exceeding the recording capacity of the recording device 3, which complements the recording device 3;
This is an effective means when, for example, the recording device 3 uses a fixed hard disk device or the like that makes the recording medium unportable, and data to be recorded on the recording device 4 can be deleted from the recording device 3. it can.

Therefore, if the recording device 3 is a DVD-RAM
The recording device 4 is not essential when the recording device is a portable recording device such as a device or an MO device, or when the recording device is a cassette type hard disk device. The recording device 4 is a cassette type hard disk device or a DVD-R
An AM device or an MO device can be used.

Reference numeral 5 denotes a data input device for inputting original data. The original data may be digital data or analog data. Data input device 5
If the original data is digital data and the data is encrypted, the data may be input as it is, or the encrypted data may be decrypted. Alternatively, after decryption, the data may be encrypted again. However, if the original data is analog data, the data is digitized.

Reference numeral 6 denotes a data separation device for separating the original data output from the data input device 5 into data A to be recorded in the recording device 1 and data B to be recorded in the recording device 3. For example, data and additional information that are particularly important in the original data are data A, and the other data are data B.
For example, the name of the data, the recording date and time of the data, information as to whether or not the original data is non-copy-permitted data, a part of an I picture when the data is MPEG data, The management data required for the combination is included in the data A.

Reference numeral 7 denotes management of where data A and data B output from the data separation device 6 are to be recorded on the recording media 1 and 3, respectively, and exchange of the recording media of the recording device 3 or the recording device 4. Even when the recording is performed, the data management device performs management for associating with the data A recorded by the recording device 1. The management for associating with the data A recorded by the recording device 1 is performed by using an information ID that can be uniquely identified for each of the recording medium of the recording device 3 and the recording medium of the recording device 4 or the recording medium of the recording device 3. The recording is performed on the recording medium of the recording device 4 and the information ID is also included in the data A.

Reference numeral 8 denotes a data combining device for combining data A recorded on the recording device 1 and data B recorded on the recording device 3, and 9 denotes data for outputting data output from the data combining device 8 to the outside. An output device, the data output device 9 converts the original data into analog data if the original data is non-copy permitted data based on information on whether or not the original data included in the data A is copy non-permitted data. And if the original data is not copy-non-permitted data, it is output as analog data or digital data.

In the embodiment of the present invention configured as described above, the original data given from the outside is input to the data input device 5, and in this case, the original data is digital data and is encrypted. In such a case, the data is input as it is, or is decrypted, or is decrypted and then encrypted again. If the original data is analog data, it is digitized.

The original data output from the data input device 5 is input to the data separation device 6 and is separated into data A and data B. The data A is used to determine whether the original data is non-copy-permitted data. Information and data A, data B
Is recorded in the recording device 1 including management data necessary for the combination of the data, and the data B is recorded in the recording device 3. In the case of including the recording device 2, the recording device 1
Can be read from the recording device 1 and recorded in the recording device 2.

If the original data is not copy-permitted data, the data A recorded on the recording device 1 and the data B recorded on the recording device 3 are read out, and these data A and data B are combined. Then, it can be recorded in the recording device 4. On the other hand, if the original data is copy-non-permitted data, only the data B recorded on the recording device 3 can be read, and only the data B can be recorded on the recording device 4.

When reproducing the original data, the data A recorded on the recording device 1 and the data B recorded on the recording device 3
Is read out and input to the data combining device 8, the data A and the data B are combined, and the data output device 9 converts the original data into analog data only when the original data is copy-inhibited data. When the original data is not the copy non-permission data, it operates to output as analog data or digital data.

As described above, according to the embodiment of the present invention, a part of the original data is recorded in the recording device 1 which is fixed so that the recording medium is unportable and cannot be easily removed. However, even if the data recorded in the recording device 3 can be taken out to the outside, it is impossible to duplicate the original data only from the data recorded in the recording device 3. Therefore, the original data to be protected from duplication can be effectively protected.

Also, the data to be recorded on the recording device 1 may be a part of the original data, and most of the original data can be recorded on the recording device 3, so that the recording device 1 is immobile and the recording capacity is limited. Even if the recording device 3 is used, the recording device 3 is a portable recording device (for example, a cassette-type hard disk device) or a recording device that has a portable recording medium (for example, a DVD-RAM device or an MO device). Even if the recording device 3 is a non-portable recording device (for example, a fixed hard disk device), the recording device 4 itself is a portable recording device (for example, a cassette type recording device). Hard disk device) or a recording device in which the recording medium is portable (for example, DVD-RAM
Device or an MO device), it is possible to cope with a recording time of several thousand hours, and the level can be set to a level having no practical problem.

The recording device 1 only needs to record a part of the original data and additional information, and only needs to have a small capacity. Therefore, even if the recording device 2 is provided as a backup for the recording device 1, There is no cost problem.

FIG. 2 is a block circuit diagram showing a main part of a specific example of one embodiment of the present invention. In FIG. 2, reference numeral 10 denotes a flash ROM constituting the recording device 1;
10 is soldered onto the main board so that it cannot be easily removed. In addition, the recording device constituting the recording device 2 is not provided because the flash ROM 10 constituting the recording device 1 is sufficiently reliable and does not require backup.

Reference numeral 11 denotes a hard disk device that forms the recording device 3, and 12 denotes a DVD-RAM device that forms the recording device 4. The hard disk device 11 and the DVD-R
The AM device 12 is fixed to the housing with screws. Note that an MO device may be provided instead of the DVD-RAM device 12.

Reference numeral 13 denotes a digital data transmission LSI compliant with IEEE1394 for inputting / outputting digital A (audio) / V (video) data, and reference numeral 14 denotes a digital A / V of the MPEG2 system by inputting analog A / V data. MPEG2 encoder for encoding data, 15 for MPEG2
Analog A / V data by decoding digital A / V data
/ V data.

An FPGA 16 separates the original data into data A and data B, and combines the data A recorded on the flash ROM 10 with the data B recorded on the hard disk drive 11. SDRAM which is a memory for FPGA, FPGA16 and SDRA
The data separation device 6 and the data combination device 8 are configured by M17.

Numeral 18 denotes data A and data B output from the FPGA 16 respectively in the flash ROM 10.
And where to record on the hard disk drive 11, and the hard disk drive 11 or DVD-RA
Even when the DVD-RAM of the M device 12 is replaced, the CPU for managing the correspondence to the data A recorded in the flash ROM 10 and the like, and 19 is a CPU 18
Is a working memory of the CPU, and the CPU 18 and the S
The RAM 19 constitutes the data management device 7.

Reference numeral 20 denotes a buffer circuit for buffering a signal from a control switch provided on the front surface of the device, 21 a buffer circuit for controlling display LEDs provided on the front surface of the device, and 22 and 23 buses. It is.

In a specific example of the embodiment of the present invention configured as described above, when the original data is digital A / V data, the original data is a digital data transmission LS.
Input through I13. When the input digital A / V data is encrypted, the input digital A / V data is input as it is or decrypted, or
After being decrypted, it is encrypted again. When the original data is analog A / V data, the original data is MPEG
2 encoder 14 and converted into MPEG2 digital A / V data.

The input original data is input to the FPGA 16 and is separated into data A and data B.
The information including whether the original data is the non-duplication data and the management data necessary for combining the data A and the data B are recorded in the flash ROM 10, and the data B is recorded in the hard disk device 11.

If the original data is not copy-inhibited data, the data A recorded in the flash ROM 10
And the data B recorded on the hard disk device 11, the data A and the data B are combined by the FPGA 16, and can be recorded on the DVD-RAM of the DVD-RAM device 12. On the other hand, if the original data is copy-inhibited data, only the data B recorded on the hard disk device 11 is read, and
The data can be recorded on the DVD-RAM of the VD-RAM device 12.

When reproducing the original data, the flash R
The data A recorded on the OM 10 and the data B recorded on the hard disk device 11 are read out and
The data A and the data B are input to the GA 16 and are combined. Here, if the original data is copy-inhibited data, the combined data is a digital data transmission LSI
13, the original data is output as digital data. If the original data is not copy-inhibited data, the combined data is supplied to the MPEG2 decoder 15 and the original data is output as analog A / V data. You.

As described above, according to one specific example of the embodiment of the present invention, a part of the original data is recorded in the flash ROM 10 fixed so as not to be easily removed. Even if the device 11 can be removed, it is impossible to digitally copy the original data only from the data recorded on the hard disk device 11. Therefore, the original data to be protected from duplication can be effectively protected.

A hard disk device 11 is provided as the recording device 3, and the hard disk device 11 can only record data for several tens of hours.
Since data can be recorded in the D-RAM device 12 and data to be stored can be deleted from the hard disk device 11, much more data can be recorded as compared with the conventional example.

Further, information as to whether or not the original data is non-copy-permitted data, management information for combining the data A and the data B, and the like are recorded in the flash ROM 10. In the hard disk device 11, it is not necessary to perform a head seek for recording / reproducing management information, and the recording / reproducing efficiency can be improved.

[0041]

As described above, according to the present invention, a part of the original data is recorded in the first recording device which is fixed so that the recording medium is unremovable and cannot be easily removed. Therefore, even if the data recorded in the second recording device can be taken out to the outside, it is impossible to duplicate the original data only from the data recorded in the second recording device. is there. Therefore, data to be protected from duplication can be effectively protected.

The data to be recorded in the first recording device may be a part of the original data, and most of the original data can be recorded in the second recording device. Even if the recording capacity is limited by the second recording device,
A recording device that is itself portable (for example, a cassette-type hard disk device) or a recording device that has a portable recording medium (for example, a DVD-RAM device or an MO device)
Or even if the second recording device is a non-portable recording device (for example, a fixed hard disk device), the third recording device itself (for example, A cassette type hard disk device) or a third recording device in which a recording medium is portable (for example,
When a DVD-RAM device or an MO device is provided, it is possible to cope with a recording time of several thousand hours, and a large amount of data can be recorded.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing a main part of an embodiment of the present invention.

FIG. 2 is a block circuit diagram showing a main part of a specific example of one embodiment of the present invention.

[Explanation of symbols]

 (FIG. 1) 1, 2, 3, 4 Recording device 5 Data input device 6 Data separation device 7 Data management device 8 Data combination device 9 Data output device (FIG. 2) 10 Flash ROM 11 Hard disk device 12 DVD-RAM device (MO 13) LSI for digital data transmission 14 MPEG2 encoder 15 MPEG2 decoder 16 FPGA 17 SDRAM 18 CPU 19 SRAM 20, 21 Buffer circuit

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toshio Hosoi 4-1-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa F-term in Fujitsu Limited (Reference) 5D044 AB05 AB07 BC01 BC06 CC04 DE12 DE50 EF05 FG18 GK07 GK17 HL02 HL08

Claims (3)

[Claims] 1. A recording apparatus comprising: a first recording device fixed so that a recording medium is unportable and cannot be easily removed; and a second recording device. A recording device for recording separately on a recording device. 2. The recording apparatus according to claim 1, wherein management data necessary for combining data recorded in said first and second recording apparatuses is recorded in said first recording apparatus. 3. The method according to claim 1, wherein the original data is inputted from outside,
A data input / separation device that separates the data to be recorded in the recording device and the data to be recorded in the second recording device; data recorded in the first recording device; A data management device that manages the correspondence with the recorded data; combining the data recorded in the first recording device and the data recorded in the second recording device, wherein the original data is not permitted to be copied. A data combining / output device capable of outputting only analog data when the data is data, and outputting both analog data and digital data when the original data is not copy-inhibited data; The recording apparatus according to claim 1, wherein: