JP2003263371A - Information processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To record data in a recording medium, while protecting its copyright, even in the case of the recording medium having no characteristic identification number ID. <P>SOLUTION: A system control part 15 detects whether the ID characteristic to each recording medium is recorded in a built-in or detachable recording medium 16 connected to the system control part 15 or not, and performs record control of musical data received from external equipment in the recording medium 16 by using the ID, when the ID is recorded. On the other hand, when the ID is not recorded, a defective block in the recording medium 16 is detected by an ID formation part 15A, and an ID is formed by using the address of the defective block, and the generated ID is recorded in the recording medium 16 by an ID recording part 15B. Then, the system control part 15 performs record control of the received musical data in the recording medium 16 by using the generated ID. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus for recording a plurality of data such as voice and music on a recording medium.

[0002]

2. Description of the Related Art When a memory is used as a recording medium for recording a music file to which music is distributed, an information processing device (equipment) different from the one for which the above recording is performed while the copyright of information is protected. A technique for reproducing a recorded music file is disclosed in Japanese Patent Laid-Open No. 6-119552 and Japanese Laid-Open Patent Publication No. 6-1.
It is disclosed in Japanese Patent No. 31371.

SDMI (Secure Digital Music I)
In order to comply with the standard, each recording medium or information processing device (playback device) has a unique identification number (ID) and is encrypted when downloading music distributed data from the Internet. There is also known a technique of using the ID as a key for unlocking the encryption so that the music distributed data cannot be reproduced unless the IDs match.

[0004]

That is, when the above identification number (ID) is present in a removable or fixed built-in recording medium for recording voice or music such as a memory card, the system determines the ID of the recording medium. To use. However,
These recording media may not necessarily have a unique ID. In such a case, the ID unique to the information processing device to be reproduced is used.
Some information processing devices also do not have an ID.

The present invention has been made in view of the above points, and can record data on a recording medium without copyright, even if the recording medium does not have a unique identification number (ID). It is an object of the present invention to provide an information processing device capable of performing the above.

[0006]

In order to achieve the above-mentioned object, an information processing apparatus according to the present invention is an information processing apparatus for recording data on a recording medium, the defect detecting a defective portion of the recording medium. A part detecting means and an identification information generating means for generating identification information of the recording medium or the information recording apparatus from information on a defective part of the recording medium detected by the defective part detecting means. And

That is, according to the information processing apparatus of the present invention, the defective portion detecting means detects the defective portion of the recording medium,
The identification information generating means generates the identification information of the recording medium or the information recording apparatus from the information on the defective portion of the recording medium detected by the defective portion detecting means.

Therefore, since the identification information is generated from the information on the defective portion of the recording medium, the unique identification number (I
Even a recording medium without D) can be used.

The recording medium is a non-volatile semiconductor memory, the defective portion detecting means detects a defective block of the recording medium, and the identification information generating means the address of the defective block and / or the defective block. It is preferable to generate the identification information from a number.

Further, in this case, it further comprises an identification information detecting means for detecting whether or not the identification information is recorded on the recording medium, and the identification information generating means is arranged to detect the identification information by the identification information detecting means. The identification information may be generated when it is detected that the recording medium is not recorded.

In order to achieve the above object, the information processing apparatus according to the present invention is an information processing apparatus for recording data on a removable recording medium, and communicates with an external device to receive data. Receiving means, recording means for recording the received data in the recording medium, identification information detecting means for detecting whether or not identification information unique to the recording medium is recorded in the recording medium, and the recording means. Identification information generating means for detecting information on a defective portion of the medium and newly generating identification information for identifying the recording medium using the information on the defective portion, and recording the received data by the recording means. When the identification information detecting means detects that the identification information is already recorded in the recording medium, the identification information already recorded in the recording medium is used. When the identification information detecting means detects that the identification information is not recorded on the recording medium, the identification information generated by the identification information generating means is used. And a control means for controlling the recording of the received data.

That is, according to the information processing apparatus of the present invention, the identification information detecting means detects whether or not the identification information unique to the recording medium is recorded in the recording medium, and the identification information is recorded. If so, the control means controls the recording of the received data by using the identification information. On the other hand, when the identification information is not recorded, the recording control of the reception data is performed using the identification information newly generated by the identification information generating means using the information about the defective portion of the recording medium.

Therefore, if the recording medium has a unique identification number (ID) in advance, it is used. If not, the identification information is generated from the information about the defective portion of the recording medium. It can be used with or without a recording medium.

The identification information generating means preferably generates the identification information when there is no reproducible data in the recording medium.

That is, the identification information generating means generates the identification information when formatting the recording medium or when erasing all the data recorded in the recording medium.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram showing the arrangement of an information processing apparatus according to the first embodiment of the present invention.

Here, in the information processing apparatus, a microphone (MIC) 11 includes a recording means via an amplifier (AMP) 12, a low-pass filter (LPF) 13, and an analog / digital (A / D) converter 14. And a system control unit 15 that functions as a control unit.

Although not shown in the figure, the system control unit 15 includes a digital signal processing unit (DSP) as an encoding / decoding circuit for compressing / decompressing voice data and decompressing music data, and A rewritable nonvolatile memory such as an EEPROM storing various information such as a model name and an identification number (ID) for identifying the information processing device is built in.

A recording medium 16 for recording voice data and music data, which is composed of a non-volatile semiconductor memory, is connected to the system control section 15. This recording medium 16
May be fixedly incorporated in the information processing apparatus, or may be detachable from the information processing apparatus. Further, the recording medium 16 preferably has a unique identification number (ID) in advance, but it does not have to have it. That is, in the present embodiment, as will be described later in detail, the recording medium 1 having no such ID.
In the case of 6, since the ID is created from the defective block information and recorded in the recording medium, a recording medium having no ID in advance can also be used. Therefore, in the present embodiment, the system control unit 15 has such I
ID creation unit 1 that functions as a defective portion detection unit, an identification information generation unit, and an identification information detection unit for creating D
5A and an ID recording unit 16B for recording the ID created by the ID creating unit 15A.

The system controller 15 includes a digital / analog (D / A) converter 17, an LPF 18,
The speaker 20 is connected via the power AMP 19.

Further, an operation input section 21 is connected to the system control section 15. This operation input unit 21
Includes a play button PLAY, a fast forward button FF, a fast rewind button REW, a record button REC, a stop button (not shown), and the like.

Further, the system control unit 15 has a US
A data transfer data conversion unit 22 is connected as a transmission / reception unit for transmitting / receiving music data by communicating with an external device (not shown) such as a PC via a B cable or the like.

Furthermore, a power supply control unit 23 and a display 24 are connected to the system control unit 15.

That is, in the information processing apparatus having such a configuration, MI
The analog audio signal obtained from C11 is amplified by the AMP12, passed through the LPF13, and then the A / D converter 14
It is converted into a digital audio signal by, is input to the system control unit 15 and is encoded, and the encoded audio data is recorded in the recording medium 16 as an audio file.

The data of the audio file recorded on the recording medium 16 is read and decoded by the system control unit 15, and the decoded read data is input to the D / A converter 17. , LPF 18 and converted into an analog signal. The signal output from the LPF 18 is amplified by the power AMP 19,
The sound is output as sound from the speaker 20.

On the other hand, the data of the music file received by the data transfer data converter 22 is recorded on the recording medium 16 by the system controller 15. At this time, the system control unit 15 uses the unique identification number (ID) of the recording medium 16.
Is read, encrypted using the ID as a key, and then recorded in the recording medium 16. If the recording medium 16 does not have an ID, the ID creating unit 15A of the system control unit 15 detects the defective block of the recording medium 16,
An ID is created from the bad block information. Then, the system control unit 15 encrypts the received data by using the created ID as a key, and then, as a music file, the recording medium 1
Record at 6. At this time, I of the system controller 15
The D recording unit 15B stores the created ID in the recording medium 16
Record it in.

When reproducing the data of the music file recorded on the recording medium 16 in this way, the data is read by the system control unit 15, and similarly the recording medium 16 is read.
The ID can be decrypted using the ID read from the key. The read data that has been decrypted is D / A
The signal is input to the converter 17, converted into an analog signal through the LPF 18, further amplified by the power AMP 19, and then output as music from the speaker 20 to the outside.

FIG. 2 shows the system control unit 1 of the information processing apparatus.
6 is a flowchart showing an operation main routine of 5.

That is, when the power switch (not shown) is turned on, first, the internal work memory and registers (not shown) are initialized (step S1), and then the operation input section 21.
It is determined whether or not any of the operation buttons has been operated (step S2).

When the record button REC is pressed (step S3), the recording process is executed (step S3).
4) If the play button PLAY is pressed (step S5), the reproduction process is executed (step S6). If the fast-forward button FF is pressed (step S
7) The fast-forward process is executed (step S8), and when the fast-reverse button REW is pressed (step S9), the fast-reverse process is executed (step S10). Since the recording process, the reproduction process, the fast-forward process, and the fast-reverse process are the same as the conventional processes, the details thereof will be omitted here.

When the clear button ERA is pressed (step S11), a clear process is executed (step S12). Although the details of the clearing process will be described later, one voice or music file is erased, all files are erased or formatted according to the pressing time of the clear button ERA, and the recording medium 16 An ID is created and recorded when there is no playable music file inside.

On the other hand, when it is determined in step S2 that the operation button has not been pressed, the data transfer data converter 22 determines whether or not music data has been received from an external device (step S13). ). And
When the audio data is received, the recording process is executed (step S14). This recording process is a process in which the received music data is encrypted using the ID and then recorded on the recording medium 16.

FIG. 3 is a flow chart showing details of the clearing process executed in step S12.

That is, first, the clear button ERA is set to 2
It is determined whether or not the button has been pressed for more than one second (step S21).

If the clear button ERA has not been pressed for 2 seconds or longer, the display 24 will be instructed to erase the selected voice file or music file (step S22). After that, the operation waits for any operation button of the operation input unit 21. Then, if any of the operation buttons is operated, it is the clear button E.
It is determined whether or not the operation button other than RA is pressed (step S23), and if so, it is determined that the file deletion has been canceled, and the process returns to the main routine. On the other hand, when the clear button ERA is operated (step S24), the selected file is erased (step S).
25). After that, it is confirmed whether or not a music file exists in the recording medium 16 (step S26), and if it exists, the process immediately returns to the main routine. If the music file does not exist in the recording medium 16, the ID creation process is performed (step S27), and the process returns to the main routine.
Details of this ID creation processing will be described later.

On the other hand, when it is determined in step S21 that the clear button ERA has been pressed for 2 seconds or more, it is further determined whether the clear button ERA has been pressed for 4 seconds or more (step S28).

If the clear button ERA is not pressed for 4 seconds or more, that is, if the clear button ERA is pressed for 2 seconds or more and less than 4 seconds, all files in the recording medium 16 are erased. Is displayed on the display 24 (step S29). After that, the operation waits for any operation button of the operation input unit 21. Then, if any of the operation buttons is operated, it is the clear button E.
It is determined whether or not the operation button other than RA is pressed (step S30), and if so, it is determined that the deletion of all files has been canceled, and the process returns to the main routine. On the other hand, when the clear button ERA is operated (step S31), all the files in the recording medium 16 are erased (step S32). After that, the ID creation process is performed (step S27), and the process returns to the main routine.

If it is determined in step S28 that the clear button ERA has been pressed for 4 seconds or longer, the display 24 is instructed to format the recording medium 16 (step S33). After that, the operation waits for any operation button of the operation input unit 21. And
If any of the operation buttons is operated, it is determined whether or not it is the operation button other than the clear button ERA (step S34), and if so, the formatting process of the recording medium 16 is canceled. Return to the main routine. On the other hand, clear button ER
When A is operated (step S35), the recording medium 16 is formatted (step S36). After that, after performing ID creation processing (step S27),
Return to the main routine.

FIG. 4 is a flow chart showing the details of the ID creating process executed in step S27.

That is, first, the presence or absence of an ID of the recording medium 16 (nonvolatile semiconductor memory) itself is determined (step S4).
1). If it has an ID, the process returns to the upper routine.

On the other hand, when the recording medium 16 does not have an ID, the manufacturer, model number or memory number of the recording medium 16 is read (step S42), and the maximum address is internally set based on the read information. Register Ad
It is set to dMax (step S43). Also, an internal register Addr used as a read address register
"0" is set in ess (step S44).

After that, the read address register Ad
It is determined whether the block of the recording medium 16 at the address indicated by the value of dress is a defective block (step S
45). If it is not a defective block, it is determined whether or not processing has been performed up to the final address, that is, the value of the read address register Address is the maximum address register Add.
It is determined whether the Max value has been reached (step S4).
6). If this has not been done yet, the value of the read address register Address is incremented by "+1" in order to perform processing for the next address (step S4).
7) and returns to step S45.

When a defective block is detected (step S45), the block is regarded as a defective block and a predetermined area (eg, header area) of the recording medium 16 is determined.
(Step S48). Then, the block address of the block registered as the defective block is registered as an ID in a predetermined area (for example, a header area) of the recording medium 16 (step S49), and the process returns to the upper routine.

If the processing is completed up to the final address without detecting a defective block (step S4)
6) Then, an address to be a defective block is created by a random function (step S50), and the block of the created address is registered as a defective block in a predetermined area (for example, header area) of the recording medium 16 (step S51).
Then, the block address of the block registered as the defective block is registered as an ID in a predetermined area (for example, a header area) of the recording medium 16 (step S49), and the process returns to the upper routine.

The ID is preferably about 16 bytes to 128 bytes from the viewpoint of the security of encryption and the speed of encryption. However, simply using the address of the defective block as the ID may not reach 16 bytes depending on the memory capacity of the recording medium 16.
Therefore, in such a case, various types of information such as the information acquired in step S42, the model name and identification number (ID) stored in the nonvolatile memory (not shown) of the system control unit 15, the user name, the date, etc. Information may also be used in addition to the address of the defective block.

As described above, if the recording medium 16 has a unique identification number (ID) in advance, it is used. If not, the identification information is generated from the information on the defective block of the recording medium 16. Therefore, it is possible to use the recording medium having the ID or the recording medium not having the ID.

[Second Embodiment] Next, the second embodiment of the present invention will be described.
An embodiment will be described.

The configuration of the information processing apparatus according to the second embodiment is the same as that of the first embodiment, and therefore its explanation is omitted. Further, the operation of the system control unit 15 is also the same as that of the first embodiment except the details of the ID creation processing, and therefore its description is omitted.

FIG. 5 shows the ID in the second embodiment.
It is a flow chart which shows details of creation processing. Note that steps S41 to S44 are omitted because they are similar to those of the first embodiment.

That is, in the second embodiment, when a defective block is detected in step S45, after the block is registered as a defective block in a predetermined area (eg, header area) of the recording medium 16, (Step S
61), by proceeding to the above step S46,
Register multiple bad blocks.

When the processing is completed up to the final address (step S46), it is determined whether or not a predetermined number or more of defective blocks have been registered (step S62). This predetermined number is determined according to the desired number of ID digits. Then, if a predetermined number or more of defective blocks are registered, the block addresses of the defective blocks are connected by the number corresponding to the desired ID digit number, and the number of registered defective blocks is further added. And use them as IDs,
After registering in a predetermined area (for example, header area) of the recording medium 16 (step S63), the process returns to the upper routine.

If a predetermined number or more of defective blocks are not registered (step S62), a predetermined number of addresses to be defective blocks are created by a random function (step S64). Then, each of the created blocks of a plurality of addresses is registered as a defective block in a predetermined area (for example, a header area) of the recording medium 16 (step S65). After that, the block addresses of a plurality of blocks registered as defective blocks are connected, the number of registered defective blocks is further added, and these are registered as IDs in a predetermined area (for example, a header area) of the recording medium 16. (Step S66),
Return to the upper routine.

As described above, when there are a plurality of defective blocks, information such as the address of another defective block and / or the total number of defective blocks is used in addition to the address of one defective block. You can also

[Third Embodiment] Next, the third embodiment of the present invention will be described.
An embodiment will be described.

The configuration of the information processing apparatus according to the third embodiment is the same as that of the first embodiment, and therefore the description thereof is omitted. Further, the operation of the system control unit 15 is also the same as that of the first embodiment except the details of the ID creation processing, and therefore its description is omitted.

FIG. 6 shows the ID in the third embodiment.
It is a flow chart which shows details of creation processing. Note that steps S41 to S44 are omitted because they are similar to those of the first embodiment.

That is, in the third embodiment, when a defective block is detected in step S45, the block is registered as a defective block in a predetermined area (for example, a header area) of the recording medium 16 and thereafter. (Step S
71), and proceeds to step S46.

When the processing is completed up to the final address (step S46), it is determined whether or not a defective block is registered (step S72). Then, if the defective block is registered, the address of the block registered as the defective block is registered as an ID in a predetermined area (for example, a header area) of the recording medium 16 (step S73), and then the higher order Return to routine. In this case, as in the second embodiment, the addresses of a plurality of defective blocks and / or the total number of defective blocks may also be used for the ID.

If no defective block is registered (step S72), an address to be a defective block is created by a random function (step S74), and the block of the created address is regarded as a defective block, and the recording medium is recorded. It is registered in 16 predetermined areas (for example, a header area) (step S75). After that, random data is created by a random function and recorded in the block of the address registered as the defective block (step S7).
6). Then, the data in the block registered as the defective block is registered as an ID in a predetermined area (for example, a header area) of the recording medium 16 (step S7).
7) Return to the upper routine.

As described above, a block which is not actually a defective block can be made to appear as a defective block and the data recorded therein can be used as an ID.
In addition, since the same ID can be recorded in two places, that is, a predetermined portion of the recording medium and a defective block portion, the illegal copy can be more restricted by comparing the two, or the predetermined portion for some reason. It can be expected that the music file can be played even if the ID is destroyed.

The present invention has been described above based on the embodiments, but the present invention is not limited to the above-mentioned embodiments, and various modifications and applications are possible within the scope of the gist of the present invention. Of course.

For example, although the above embodiment has been described by taking the information processing apparatus capable of recording and reproducing both a music file and a sound file as an example, it is possible to download, record and reproduce only a music file from an external device. It does not have to be.

[0064]

As described in detail above, according to the present invention,
Since the identification information is generated from the information about the defective portion of the recording medium, even if the recording medium does not have a unique identification number (ID), the data can be recorded on the recording medium while the copyright is protected. It is possible to provide an information processing device capable of performing the above.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an information processing device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation main routine of a system control unit in FIG.

FIG. 3 is a flowchart showing details of clear processing in FIG.

FIG. 4 is a flowchart showing details of ID creation processing in FIG.

FIG. 5 is a flowchart showing details of ID creation processing according to the second embodiment of the present invention.

FIG. 6 is a flowchart showing details of ID creation processing according to the third embodiment of the present invention.

[Explanation of symbols] 15 System control unit 15A ID creation section 15B ID recording section 16 recording media 21 Operation input section 22 Data converter for data transfer 24 display ERA clear button

Claims (6)

[Claims] 1. An information processing apparatus for recording data on a recording medium, comprising: defective portion detecting means for detecting a defective portion of the recording medium; and information on the defective portion of the recording medium detected by the defective portion detecting means. An information processing device comprising: an identification information generating unit that generates identification information of the recording medium or the information recording device. 2. The recording medium is a non-volatile semiconductor memory, the defective portion detecting unit detects a defective block of the recording medium, and the identification information generating unit includes an address of the defective block and a / The information processing apparatus according to claim 1, wherein the identification information is generated from the number of defective blocks. 3. The apparatus further comprises identification information detecting means for detecting whether or not the identification information is recorded on the recording medium, and the identification information generating means is configured to detect the identification information by the identification information detecting means. The information processing apparatus according to claim 2, wherein the identification information is generated when it is detected that the identification information is not recorded on the recording medium. 4. An information processing apparatus for recording data on a removable recording medium, receiving means for communicating with an external device to receive data, and recording means for recording the received data on the recording medium. Identification information detecting means for detecting whether or not the identification information peculiar to the recording medium is recorded in the recording medium, and information on a defective portion of the recording medium is detected, and information on the defective portion is newly added using the information on the defective portion. And an identification information generating means for generating identification information for identifying the recording medium, and when the recording data is recorded by the recording means, the identification information is already recorded in the recording medium by the identification information detecting means. If it is detected that the received data is recorded using the identification information already recorded on the recording medium, the identification information detection means Accordingly, when it is detected that the identification information is not recorded on the recording medium, a control unit that controls the recording of the received data by using the identification information generated by the identification information generation unit, An information processing apparatus comprising: 5. The information processing apparatus according to claim 4, wherein the identification information generating means generates the identification information when there is no reproducible data in the recording medium. 6. The identification information generating means generates the identification information when formatting the recording medium or when erasing all the data recorded in the recording medium. The information processing device according to claim 5.