JP2003158709A - Data recorder/reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data recorder/reproducer for preventing the unlimited copy of contents data, and ensuring the convenience of the edition of the contents data. SOLUTION: This data recorder/reproducer is provided with an incorporated memory 6 for storing digital data such as contents data, reproduction data inputting means 1 and 2 for inputting a prescribed reproduction data signal from an external data reproducing means, and for recording contents data based on the reproduction data signal in the incorporated memory 6, reproduction signal generating means 7 and 8 for generating a reproduction signal based on the contents data, and an external media interface 9 for transferring contents data with external media. The contents data to be transferred from the incorporated memory to the external media are enciphered by using either device ID being the identification information of the data recorder/reproducer or media ID being the identification information of the external media acquired from the external media, and the enciphered contents data are decoded and reproduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to data recording / reproducing in which content data such as music data and video data is encrypted and transferred to an external medium, or content data input from the outside is encrypted and recorded in a built-in memory. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, as a method of protecting the copyright of content data such as music data and video data, SCMS (serial copy management) which permits only one copy to prevent so-called grandchild copy・
System) etc. are known. This is to add copy permission (prohibition) information to the content data of the copy destination so as to check the copy permission information and prevent the copy at the time of the grandchild copy. By the way, in the case of recording content data for private use, there is a strong need to edit the content data and record it by utilizing the convenience of digital data to create a library for oneself. Particularly, when content data is recorded from a reproduction signal of data, for example, when data is recorded (recorded) from an analog reproduction signal of a music CD, an editing function such as selecting and recording only a favorite song is provided. It is desired to have.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
According to such a copy prevention function as described above, the copy permission information is added to the content data itself. Therefore, if the copy is performed by a copy device that does not check this, there is a problem that the copy is unlimited. Also, for example, music C
When digitally recording the reproduction signal of data such as D, all the continuously reproduced songs are recorded as continuous connected data, and it is not possible to edit such as collecting and recording only favorite data. There is also a problem that the convenience of editing the data is low. Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a data recording / reproducing apparatus that both prevents unlimited copying of content data and ensures the convenience of editing the content data. To do.

[0004]

In order to achieve the above object, the present invention provides a built-in memory for storing digital data such as content data, and a predetermined reproduction data signal from an external data reproducing means to reproduce the data. In a data recording / reproducing apparatus including reproduction data input means for recording the content data based on a data signal in the built-in memory and reproduction signal generating means for generating a reproduction signal based on the content data, a predetermined external medium is used. An external media interface for exchanging the content data between the external device and the external device obtained from the external medium, which is the device ID that is the identification information of the data recording / reproducing device, and the external data that transfers the internal data from the internal memory to the external medium Encryption using any of the media IDs that are the identification information of the media And a decryption unit for decrypting the content data encrypted by using either the device ID or the media ID. is there. As a result, the content data transferred to the external medium is encrypted, and the device ID or the media ID required for decryption of the content data is not added to the content data itself, so even if the content data is copied to another medium. Since the restriction that it cannot be reproduced (decoded) is added, the copyright of the content data is protected.

It is also conceivable that the apparatus further comprises a data encoding means for encoding and compressing the content data recorded in the built-in memory by the reproduction data input means. As a result, the built-in memory can be realized with a smaller capacity, and the size and cost can be reduced.

[0006] Further, it is conceivable that the contents data transferred from the built-in memory to the external medium is erased from the built-in memory. As a result, since the transferred data is erased from the built-in memory, it is possible to prevent the content data recorded in the built-in memory from being copied to many external media without limitation.

It is also conceivable that the encryption means may also be configured to encrypt the content data transferred from the external medium storing the unencrypted content data to the built-in memory. As a result, the protection of data is further strengthened.

Further, a data dividing means for dividing the content data recorded in the built-in memory into a plurality of section data, and a section for performing either one or both of transfer to the external medium and deletion for each section data. An editing means may be provided, and further, the data dividing means may be configured so that a delimiter position for dividing the section data can be arbitrarily designated. Thereby, for example, it is possible to create a library for oneself by collecting only favorite song data from a plurality of song data of a music CD.

Further, the section editing means cannot transfer the data encrypted by the encryption means to the external medium for each of the section data divided by the arbitrarily specified delimiter position. It is also conceivable that it is configured as follows. As a result, the data that is encrypted and recorded in the built-in memory, that is, the content data that is taken in from the external medium cannot be transferred in units of the arbitrarily specified delimiter position, and therefore one unit is used. It is possible to prevent the data, which is processed such that a part (for example, one phrase) of the content data (for example, one song) is connected, from being copied to the external medium, and to further protect the copyright.

Further, when the content data includes voice data, the data dividing means can automatically divide a portion where the voice data is equal to or lower than a predetermined voice level as a division position for dividing the section data. The one configured as described above is also conceivable. Usually, music CDs are 1
Since there is a silent section for each song, it is convenient to automatically divide each song.

It is also conceivable that the apparatus is provided with a section releasing means for releasing the section of any of the section data. As a result, for example, as described above, it is possible to group the songs that are automatically divided for each song in units of several songs.

Further, the reproduction signal generating means continuously reproduces the reproduction signal for one or both of the one or more content data in the built-in memory and the one or more content data contained in the external medium. It may be configured so that it can be generated. As a result, it is possible to create a larger capacity library including external media, not limited to the capacity of the built-in memory.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments and examples of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following embodiments and examples are merely examples embodying the present invention and are not of the nature to limit the technical scope of the present invention. 1 is a block diagram showing the configuration of the recording / reproducing apparatus X according to the embodiment of the present invention, and FIG. 2 is a flowchart showing the processing procedure at the time of recording in the recording / reproducing apparatus X according to the embodiment of the present invention. FIG. 3 is a flowchart showing a processing procedure during normal reproduction of content data in the recording / reproducing apparatus X according to the embodiment of the present invention, and FIG. 4 is a normal content data in the recording / reproducing apparatus X according to the embodiment of the present invention. 5 is a flowchart showing the procedure of only the playback processing part which is a part of the processing at the time of playback, and FIG. FIG. 6 is a flow chart showing a flow chart showing a processing procedure of data transfer from the internal memory to the external medium in the recording / reproducing apparatus X according to the embodiment of the present invention. FIG. 7 is a flowchart showing a processing procedure at the time of continuous reproduction of content data in the built-in memory and the external medium in the recording / reproducing apparatus X according to the embodiment of the present invention, and FIG. 8 is an embodiment of the present invention. It is a conceptual diagram explaining the internal data management of the built-in memory of the recording / reproducing apparatus X which concerns.

First, the configuration of the recording / reproducing apparatus X according to the embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the recording / reproducing apparatus X inputs an audio reproducing signal (analog reproducing signal) from an external audio data reproducing apparatus such as an audio device as a so-called “LINE IN”,
AD converting to content data that is digital data
It is composed of a conversion unit 1 (ADC), a data encoding unit 2 which is a DSP or the like for performing a predetermined encoding to compress the content data after AD conversion, various operation switches, buttons and the like (not shown). An operation unit 3, a display unit 4 such as a liquid crystal panel for displaying the state of the recording / playback apparatus X, and a CP.
U, ROM, RAM, etc. (not shown)
On-chip ROM in PU or the ROM (hereinafter,
A control unit 5 that performs arithmetic processing on content data and other data by executing a predetermined program stored together in these (simply referred to as ROM), and stores audio content data (audio data) and data related thereto. A non-volatile built-in memory 6, a data decoding unit 7 such as a DSP that decodes the encoded data encoded by the data encoding unit 2 into data before encoding, and the decoded data. D for converting the reproduced data into the analog reproduction signal that can be reproduced by headphones or the like.
The A conversion unit 8 (DAC), the device ID storage unit 9 that is a memory such as a ROM that stores the device ID that is the identification information unique to the recording / reproducing device X, and the external storage medium store content data. It has an external media interface 10 which is an interface for transmitting and receiving data.
The encoding method in the data encoding unit 2 is MPEG-1 or MPEG-2 layer-
Data compression methods such as 1-3 and TwinVQ are known. As the external media, various memories such as SD card, memory stick, smart media, CD-ROM, hard disk, floppy (registered trademark) disk are known, and the external media interface 10 uses these external media. It is also conceivable that the interface is directly connected to the external medium or that the external medium is accessible via a USB interface or a personal computer. Further, the control unit 5 controls a whole operation of the recording / reproducing apparatus X and a display on the display unit 4 according to an operation input from the operation unit 3 by executing a predetermined program in the ROM. And an encryption function for converting the content data in the built-in memory 6 and the content data read from the external medium into encrypted data encrypted using the device ID, and the encrypted data. It has a decryption function of decrypting using the device ID and converting it into the data before the encryption. The encrypted data cannot be decrypted and reproduced without using the device ID. Examples of the encryption and decryption methods include DES (Data Encryption Standard) and I
DEA (Improved Data Encryption Algorithm) and the like are known. The recording / reproducing apparatus X has a recording function of recording the analog reproduction signal input from the AD converter 1 as content data in the built-in memory 6, and the content data recorded in the built-in memory 6 from the DA converter 8. In addition to the normal reproduction function of outputting as an analog reproduction signal, a continuous reproduction function of continuously reproducing each of the content data recorded in the internal memory 6 and the external medium, between the internal memory 6 and the external medium And a data transfer function for transferring content data to each other, and a data erasing function for erasing the content data in the built-in memory 6. Hereinafter, each of these functions will be described in detail.

(Recording) First, the processing procedure of the recording function will be described with reference to FIG. Hereinafter, S101 and S10
1, ... Represent the processing procedure (step) number. When a predetermined recording start operation is performed from the operation unit 3, the process of FIG. 2 is started, and the control unit 5 determines whether the built-in memory 6 is in a memory full state (a state in which there is no free space). (S101). Here, when it is determined that the memory is not full, the control unit 5 causes
After the operation input from the operation unit 3 is confirmed (S10
2) It is determined whether or not a predetermined STOP operation has been performed (S103). When it is determined that the STOP operation has not been performed, the analog reproduction signal is AD-converted and generated by the AD conversion section 1. A predetermined one block of the content data (hereinafter referred to as block data) is received by the data encoding unit 2 (S104), and the block data is encoded (compressed) by the data encoding unit 2. After that (S105), the encoded block data is recorded in the built-in memory 6 by the control unit 5 (S106), and the block data received in S104 is the first block after recording is started. It is determined whether or not it is data (S107).
Here, if it is determined that the block data is the first one (YES side of S107), as shown in FIG. 8, pointer information indicating the head address where the block data is recorded in the internal memory 6 is used. After recording a certain start pointer 51 as the data management information 50 in the internal memory 6 by the control unit 5 (S110), S10
The process returns to 1 and the above-described processing is repeated. On the other hand, S10
If it is determined in step 7 that the block data received in S104 is not the first one (the second and subsequent ones) after starting recording (NO side of S107), the block data is a silent data. It is determined whether or not (S108). Whether or not it is the silent data is determined by
It is determined whether or not the block data is audio data of a predetermined audio level or lower (volume level is a predetermined level or lower). Here, when it is determined that the block data is the silent data (YES side of S108), as shown in FIG. 8, the head address where the silent data (the block data) is recorded in the built-in memory 6. Boundary pointer 5 that is pointer information that points to
After 2 is recorded in the built-in memory 6 by the control unit 5 as the data management information 50 (S109), the process returns to S101 and the above-described processing is repeated. Generally, in music content data, since a silent data area is provided between songs, the boundary pointer 52 that points to an address where the silent data is recorded is used as a boundary between music data. It indicates a position (address). On the other hand, when it is determined in S108 that the block data is not the silent data, the process returns to S101 and the above-described processing is repeated. In this way, the processes of S101 to S110 described above are repeated, and the block data are sequentially recorded in the built-in memory 6. In the middle of these processes S101 to S110, the internal memory 6
Is determined to be full of memory (S101
(YES side of S), or when it is determined that the STOP operation is performed from the operation unit 3 (YES side of S103)
It is determined whether or not at least one block data is recorded in the internal memory 6 (S11).
1) If it is determined that one or more pieces of data have been recorded, the processing ends after the end pointer 53, which is pointer information indicating the last address of the block data recorded last, is recorded as the data management information 50. To do. On the other hand, if it is determined that none of the block data has been recorded (NO side of S111), the process ends. Here, although not shown in FIG.
In the processing of 9, when the silent data is continuous, the boundary pointer 52 is recorded only for the first silent data. Of course, another recording method is conceivable, such as selecting the last one or a plurality of the first and last from the continuous silent data and recording the boundary pointer 52 only for the selected silent data. As described above, according to the data management information 50, the data from the start pointer 51 to the end pointer 53 (data recorded by one recording) is converted by the boundary pointer 52 into section data for each song ( Data from the silent data area to the next silent data area) will be automatically classified.

(Normal reproduction) Next, a normal reproduction function for reproducing the content data recorded in the internal memory 6 will be described with reference to FIG. First, the operation unit 3
Thus, either the start pointer 51 or the boundary pointer 52 is designated and input as the reproduction start position of the content data (S201). The boundary pointer 52
In addition to being automatically set at the time of recording the content data as described above, the user can also set it at an arbitrary position by a predetermined operation described later. Here, the designation of the start pointer 51 or the boundary pointer 52 is performed by, for example, displaying options such as a data name and a data number (song 1, song 2, etc.) corresponding to each pointer 51, 52 on the display unit 4. Then, the operation is performed by selecting the operation section 3 or the like. The setting of the data name and the like (corresponding to the pointers 51 and 52) is performed by the pointer 5
When recording 1, 52, it may be possible to record them in the built-in memory 6 as the data management information. Next, the control unit 5 reads out content data for one predetermined block from the start position designated in S201 as reproduction block data (S202), and reproduces the reproduction block data by the reproduction processing shown in FIG. The analog reproduction signal is converted and output to headphones or the like (S20).
3).

In the reproduction process of S203 shown in FIG. 4, the control unit 5 determines whether the reproduction block data is the encrypted data (S231), and determines that the reproduction block data is the encrypted data. In the case, after being decrypted using the device ID in the device ID storage unit 9 (S2
34), and proceeds to S232. On the other hand, when it is determined in S231 that the data is not the encrypted data, the process directly proceeds to S232. Next, in S232, the decryption is performed by the control unit 5 (or,
The playback block data (which was originally not encrypted)
Whether it is the encoded data or not is determined, and when it is determined that the encoded data is the encoded data, the decoding is performed by the decoding unit 7 (S235), and then the process proceeds to S233. On the other hand, if it is determined in S232 that the data is not the decrypted data, the process directly proceeds to S233. Next, in S233, the analog reproduction signal is generated by the DA converter 8 based on the decoded (or originally not encoded) reproduction block data, and is output to headphones or the like.

Next, by the control unit 5, the operation unit 3
The operation input from is confirmed (S204), and the predetermined STO
A determination is made as to whether or not a P operation has been performed (S205) and a determination as to whether or not a predetermined pause operation has been performed (S206). Here, if it is determined that any operation has not been performed (NO side of S206), it is determined whether or not the next content data exists in the internal memory 6 (S207), and the next content data is determined. If it is determined that there is a block, the data for the next one block is read as the reproduction block data (S208), and then S
Returning to 203, the above-mentioned reproduction processing is repeated.

On the other hand, if it is determined in S206 that the temporary stop operation has been performed (YES in S206).
Side), the control unit 5 further confirms the operation input from the operation unit 3 (S211), determines whether or not a predetermined break designation operation is performed (S212), and determines whether or not a predetermined break release operation is performed. (S213) and whether or not the temporary stop operation is performed again (21)
4) is done. If it is determined that the delimiter designation operation has been performed (YES in S212), pointer information indicating the start address of the block data read at that time is used as the boundary pointer 52 for the data. After additional setting in the management information 50 (S22
1), returning to S211, the process is repeated. As a result, for example, even voice data which is not necessarily present for each set of data, such as voice CD data created by the user, such as music CD data, is divided into a plurality of section data. It becomes possible to do. Further, even in the case of music CD data or the like, it is possible to divide into smaller units (for example, only one phrase). On the other hand, if it is determined that the delimiter cancellation operation has been performed (YES in S213)
Side), after the boundary pointer 52 set to the nearest address in the vicinity of the block data read at that time is deleted from the data management information (S222), the process returns to S211 to perform processing. Repeated. As a result, the boundary pointer 52 once set
It is also possible to cancel. Further, when it is determined that the temporary stop operation is performed again (that is, when the temporary stop state is released), the process proceeds to S207 and returns to the reproduction process of the next data, but otherwise, Then, the process returns to S211 as it is, and the above-described delimitation designation / cancellation processing is repeated. When it is determined that the STOP operation is performed in the course of repeating the above processing S201 to S222 (YES side of S206) or when it is determined that the next data does not exist (NO side of S207). Is
The process ends.

(Continuous reproduction) In addition to the function of reproducing the content data in the internal memory 6 (FIG. 2), the recording / reproducing apparatus X continuously reproduces the content data in the internal memory 6 and the content data in the external medium. It also has the above-mentioned continuous reproduction function of reproducing. Hereinafter, the processing procedure of the continuous reproduction function will be described with reference to FIG. When a predetermined continuous reproduction operation is performed from the operation section 3, the processing of FIG. 7 is started, and the control section 5 determines whether or not content data exists in the internal memory 6 (S4).
01), if it is determined that the content data is present, the read destination of the content data is set in the internal memory 6 (402), and a predetermined one block of data is reproduced from the content data located at the head of the set read destination. The block data is read as block data (S403), and the playback process (FIG. 4) described above is performed on the playback block data (S4).
04). Next, the input from the operation unit 3 is confirmed (S
405), it is determined whether a predetermined STOP operation input is made (S406), and whether a predetermined pause operation input is made (S407). The STO
If it is determined that the P operation is performed (Y in S406)
(S side), the process ends as it is. If it is determined that the temporary stop operation has been performed (YES in S407)
Side), loop until the temporary stop operation is performed again (S413). On the other hand, when it is determined that neither the STOP operation input nor the temporary stop operation input is performed (NO side of S407), or it is determined that the temporary stop operation is performed again after the temporary stop operation is performed. If so (YES in S413), it is determined whether or not the next content data exists in the read destination (S).
408), if it is determined that the reproduction block data for the next one block is read (S).
414), the process returns to S404 and the above-described reproduction process is repeated.

On the other hand, when it is determined in S408 that the next content data does not exist in the read destination, it is determined whether or not the read destination at that time is the internal memory 6 (S409), If it is determined that the memory is the internal memory 6, the process proceeds to S411. S41
When it is determined that the content data exists in the external medium in 1 (YES side of S411),
This time, after the external medium is set as the read destination (S412), the process proceeds to S403, until all the content data in the external medium is reproduced, or until the STOP operation input is made. The reproduction process is repeated. If it is determined in S401 that the content data does not exist in the built-in memory 6, the process proceeds to S411, and if it is determined that the content data exists in the external medium (YES side of S411), S412. After shifting to (1) and setting the read destination to the external medium, the reproduction process from S403 is performed on the content data in the external medium. On the other hand, when it is determined that the content data does not exist in the external medium (NO side of S411),
The process ends as it is. In this way, not only the content data in the built-in memory 6 but also the content data in the external medium can be reproduced, so that more content data can be continuously reproduced without being limited to the data capacity of the built-in memory 6.

(Data Transfer External Media → Built-in Memory) Next, referring to FIG. 5, among the data transfer functions,
The process of transferring the content data in the external medium to the internal memory 6 will be described. First, the operation unit 3 inputs designation of data to be transferred to the built-in memory 6 from digital data existing in the external medium (S301). At this time, the control unit 5 causes the display unit 4 to display the options (file name, etc.) of the digital data read from the external medium, and the user selects the desired data from the options. specify. Next, based on the size of the selected content data, it is determined whether or not there is sufficient free space in the internal memory 6 (S302). If it is determined that there is not enough free space, the transfer is stopped. After the message to the effect is displayed on the display unit 4 (S307), the process ends. On the other hand, if it is determined in S302 that there is sufficient free space, S
It is determined whether or not the content data designated in 301 is the encrypted data (S303). If it is determined that the content data is not the encrypted data, the control unit 5 designates the external medium in the S301. The read digital data is read and converted into the encrypted data using the device ID in the device ID storage unit 9 (S304), and then the encrypted data is written in the internal memory 6 (S305). ). On the other hand, in S303, S
When it is determined that the content data designated by 301 is the encrypted data, the encrypted data is written in the built-in memory 6 (S305). Next, S30
5, the start pointer 51 and the end pointer 53, which are pointer information pointing to the start address and the end address of the data written in the internal memory 6, respectively, are stored in the internal memory 6 as the data management information.
After being recorded in (S306), the process ends.

(Data Transfer Internal Memory → External Media) Next, referring to FIG. 6, among the data transfer functions,
A process for transferring digital data in the internal memory 6 to the external medium will be described. First, the operation unit 5 inputs a designation of a section of transfer data which is digital data to be transferred from the built-in memory 6 to the external medium (S311). At this time, the display unit 4 displays data names and data numbers (song 1, song 2, etc.) corresponding to the start pointers 51 as options, and the transfer data is designated by the start address indicating the start address. This is done by selecting the pointer 51 from the options. That is, the data in the section from the start address pointed by the selected start pointer 51 to the end address pointed by the end pointer 53 corresponding thereto becomes the transfer data. Next, it is determined whether or not the transfer data designated in S311 is the encrypted data (S312). If it is determined that the transfer data is not the encrypted data, the operation unit 3 converts the transfer data into the transfer data. By inputting the boundary pointer 52 set for the transfer data, the section (first address to last address) of the transfer data is further narrowed down and designated (S313). As a method of designating the section of the transfer data, for example, a section including the block data recorded at the paused position by the pause operation during the normal reproduction of the content data described above (before and after the block data) A method of using the data of the section divided by the pointers 51 to 53 set to the closest position in each case as the transfer data is also considered. Furthermore, the transfer data thus narrowed down is transferred to the control unit 5.
Thus, after being encrypted using the device ID in the device ID storage unit 9 (S314), the process proceeds to S315.
As a result, for the data recorded in the internal memory 6 without being encrypted by the device ID, that is, the content data based on the analog reproduction signal input via the AD conversion unit 1, the boundary pointer 52 It is possible to specify the transfer data for each section data sectioned by. Of course, even for unencrypted data, the entire range from the start pointer 51 to the end pointer 52 can be designated, and this designation method and the method designated by the boundary pointer 52 can be selected. Good. On the other hand, when it is determined in S312 that the transfer data designated in S311 is the encrypted data, the process directly proceeds to S315. Next, in S315, the transfer data specified in S311 or S314 is specified by the control unit 5.
It is determined whether or not there is sufficient free space in the external medium on the basis of the size of the transfer data that has been encrypted by, and when it is determined that there is sufficient free space,
The transfer data is transferred (written) to the external medium
(S316). Further, after the transfer data is erased from the internal memory 6 by the control unit 5 (S
317), the process ends. In this way, the transferred data that has been transferred is erased from the internal memory 6,
It is possible to prevent the content data recorded in the internal memory 6 from being copied to many external media without limitation. On the other hand, if it is determined in S315 that the external medium does not have sufficient free space, a message to the effect that transfer is stopped is displayed on the display unit 4 (S318), and then the process ends.

(Data Erasing) Next, the data erasing function will be described. In the procedure of the data erasing function, the method of designating the section of the data to be erased is the same as the processing of S311 to S314 in the processing of the data transfer function from the internal memory 6 to the external medium shown in FIG. The data of the designated section is erased from the built-in memory 6 by the control unit 5 by a predetermined erasing operation from the operation unit 3. Thereby, the device I
For the data recorded in the internal memory 6 without being encrypted by D, that is, the content data based on the audio reproduction signal input via the AD conversion unit 1, the start pointer 51 and the end pointer 52 , And the content data transferred from the external medium for each data sectioned by the arbitrarily set boundary pointer 52 can be erased from the internal memory 6 for each transferred unit.

As described above, regarding the data recorded in the built-in memory 6 without being encrypted by the device ID, that is, the content data based on the analog reproduction signal input via the AD conversion unit 1. Can be transferred from the built-in memory 6 to the external medium for each section data sectioned by the start pointer 51, the end pointer 52, and the boundary pointer 52 that can be arbitrarily set. By recording content data in the built-in memory 6 and saving only a favorite song or a favorite phrase from the internal memory 6 to the external medium once and performing this for one or a plurality of music CDs, Create a library for yourself that collects etc. in the external medium or the built-in memory 6 and play it Theft is possible. In addition, regarding the content data stored in the external medium,
In the case where each song is filed, the library for each song can be transferred to the internal memory 6 to create a library for oneself. Further, the start pointer 51, the end pointer 53, and the boundary pointer 52 can be utilized for so-called cueing during reproduction, which is convenient. On the other hand, the recording / playback device X
The data to be transferred to the external medium via the device is always encrypted using the device ID, and the device ID is not added to the content data, so that it cannot be reproduced (decoded) by another reproduction device. The copyright of the data is protected. Also, the device ID
The data recorded in the built-in memory 6 after being encrypted by the above, that is, the content data taken in from the external medium is set by the boundary pointer 52 as long as it is recorded in the built-in memory 6. While the convenience such as the cueing can be improved, the data transfer to the external medium is configured such that the data cannot be transferred for each section by the arbitrarily set boundary pointer 52, and therefore one unit (for example, It is possible to prevent the data processed such that a part (for example, one phrase) of the content data of one song is connected, from being copied to the external medium, and it is possible to further strengthen the copyright protection.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION In the recording / reproducing apparatus X, the apparatus ID is used when the content data is encrypted and decrypted, but the external media each have a media ID which is unique identification information. In this case, it is conceivable that the content ID is encrypted and decrypted using the media ID instead of the device ID. In this case, the reproduction can be performed by another reproduction device having the same reproduction function, but even if so-called grandchild copying is performed from the external medium to another medium, the medium ID is different (or does not exist). Since the restriction that it cannot be reproduced is added, the copyright of the content data is protected. Further, in the above-described embodiment, an example in which music data is used as the content data is shown, but it is of course possible to apply the content data including video data or both video data and audio data to a recording / reproducing device. .

[0027]

As described above, even in the case of digitally recording a reproduction signal of a music CD or the like, it is possible to perform editing such as collecting and recording only favorite data by dividing each song or arbitrarily. Highly convenient when editing data. On the other hand, the data to be transferred to the external medium is always encrypted, and the ID used for encryption is not added to the content data itself, so that it can be played back on another playback device or played back from the copied external media. The copyright of data is protected by the restriction that it cannot be done. Therefore, it is possible to prevent both the unlimited copying of the content data and the convenience of editing the content data.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a recording / playback apparatus X according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a recording procedure in the recording / reproducing apparatus X according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a processing procedure during normal reproduction of content data in the recording / reproducing apparatus X according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a procedure of only a part of a reproduction process which is a part of a process at the time of normal reproduction of content data in the recording / reproduction device X according to the embodiment of the present invention.

FIG. 5 is a flowchart showing a processing procedure of data transfer from an external medium to a built-in memory in the recording / reproducing apparatus X according to the embodiment of the present invention.

FIG. 6 is a flowchart showing a processing procedure of data transfer from a built-in memory to an external medium in the recording / reproducing apparatus X according to the embodiment of the present invention.

FIG. 7 is a flowchart showing a processing procedure at the time of continuous reproduction of content data in a built-in memory and an external medium in the recording / reproducing apparatus X according to the embodiment of the present invention.

FIG. 8 is a conceptual diagram illustrating internal data management of a built-in memory of the recording / playback apparatus X according to the embodiment of the present invention.

[Explanation of symbols]

1 ... AD converter (ADC) 2 ... Data encoding unit 3 ... Operation part 4 ... Display 5 ... Control unit 6 ... Built-in memory 7 ... Data decoding unit 8 ... DA converter (DAC) 9 ... Device ID storage unit 10 ... External media interface 50 ... Data management information 51 ... Start pointer 51 52 ... Boundary pointer 53 ... end pointer S101, S102, ... Processing procedure (step)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeki Murakami             1-5-5 Takatsukadai, Nishi-ku, Kobe City, Hyogo Prefecture             Kobe Steel Co., Ltd.Kobe Research Institute (72) Inventor Takayuki Hikata             1-5-5 Takatsukadai, Nishi-ku, Kobe City, Hyogo Prefecture             Kobe Steel Co., Ltd.Kobe Research Institute F-term (reference) 5C052 AB02 DD04 DD06                 5C053 FA13 FA15 JA01 JA21 LA11                 5D044 AB05 BC04 CC04 DE50 EF05                       FG18 GK08 GK12 GK17 HL08                       HL14                 5D110 AA14 AA27 CA16 CA32 CB04                       CD02 CF26

Claims (11)

[Claims] 1. A built-in memory for storing digital data such as content data, an external media interface for exchanging the content data with a predetermined external medium, and a reproduction signal for generating a reproduction signal based on the content data. In a data recording / reproducing apparatus including a generation unit, the content data to be transferred from the built-in memory to the external medium is a device ID that is identification information of the data recording / reproducing apparatus or the external medium of the external medium acquired from the external medium. Media ID that is identification information
And an encryption means for encrypting the content data encrypted by using either the device ID or the media ID. Characteristic data recording / reproducing apparatus. 2. A data recording / reproducing device according to claim 1, further comprising reproduction data input means for inputting a predetermined reproduction data signal from the outside and recording the content data based on the reproduction data signal in the built-in memory. apparatus. 3. The data recording / reproducing apparatus according to claim 2, further comprising data encoding means for encoding and compressing the content data recorded in the built-in memory by the reproduction data input means. 4. The data recording / reproducing apparatus according to claim 1, wherein the content data transferred from the built-in memory to the external medium is erased from the built-in memory. 5. The content data transferred from the external medium storing the unencrypted content data to the built-in memory is also encrypted by the encryption unit. A data recording / reproducing apparatus as described in. 6. A data dividing means for dividing the content data recorded in the built-in memory into a plurality of section data, and a section for performing one or both of transfer and deletion to the external medium for each section data. The data recording / reproducing apparatus according to any one of claims 1 to 5, further comprising: editing means. 7. The data recording / reproducing apparatus according to claim 6, wherein the data dividing means is configured to arbitrarily specify a delimiter position for dividing the section data. 8. The section editing unit cannot transfer the data encrypted by the encrypting unit to the external medium for each section data segmented by the arbitrarily designated delimiter position. The data recording / reproducing apparatus according to claim 7, which is configured as described above. 9. The content data includes audio data, and the data classification means can automatically classify a portion where the audio data is equal to or lower than a predetermined audio level as a delimiter position for partitioning the section data. 9. The data recording / reproducing apparatus according to claim 6, which is configured as described above. 10. The data recording / reproducing apparatus according to claim 6, further comprising a section releasing means for releasing a section of any of the section data. 11. The reproduction signal generating means continuously reproduces the reproduction signal for one or both of the one or more content data in the built-in memory and the one or more content data included in the external medium. The data recording / reproducing apparatus according to any one of claims 1 to 10, which is configured to be capable of generating.