JP2001060172A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve inconvenience in the case of erroneous insertion by discriminating whether a mounted memory is a first memory or a second memory and giving a notice corresponding to a discriminated result. SOLUTION: A CPU 2 monitors the insertion of a memory card and starts an authentication processing to the memory card corresponding to the insertion of the memory card to a recorder 1. When a normal response is obtained as the result of the authentication processing, the CPU 2 discriminates that the mounted card is a memory card 40 loaded with a security block for the purpose of copyright protection. On the other hand, when the normal response is not obtained within a prescribed time, it is discriminated that the loaded card is a memory card not coping with the copyright protection. Then, in the case of judging that it is the memory card not coping with the copyright protection, an alarm is displayed to a user on a display device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal to which a copyright compatible memory and a non-copyright compatible memory can be selectively mounted.

[0002]

2. Description of the Related Art At present, in a WWW (world wide web), a desired server is accessed via a PC (personal computer), and compressed digital data such as music and video are stored on a hard disk on the PC. Downloading and enjoyment by users are widely performed.
Furthermore, a portable memory (for example, a memory card) having a nonvolatile memory typified by a flash memory is mounted on the portable terminal (or a portable terminal having a fixed nonvolatile memory is used), and the portable terminal is used. IEEE 1394
Standard cable, RS (recommended standard) -232
By connecting to the PC via an I / F (interface) such as C, USB (universal standard bus), digital data such as music and video compressed on the hard disk is moved to the nonvolatile memory or There are known those which are copied so that the user can enjoy listening to music or the like outdoors, for example.

[0003]

By the way, with respect to digital data downloaded via the Internet, illegal copying is not performed at this stage because copyright management realized by applying encryption and / or authentication is not strict. There was a situation where it spread.

At present, digital data stored in the non-volatile memory is not encrypted, so that there is a concern that illegal copying will be flooded even in a system using the above-mentioned portable terminal. In order to strictly manage the copyright, a nonvolatile memory having a signal processing circuit for performing authentication and encryption has been proposed. That is, non-volatile memory for copyright (memory card for copyright)
Is being developed.

[0005] However, when a non-copyright compliant non-volatile memory, which is currently being proposed, is popularized, it is clearly distinguished from a non-copyright compliant non-volatile memory which has been widely used in the past, and is clearly distinguished on the user side. It is necessary to be able to use properly. On the other hand, in consideration of compatibility with an old portable device, it is not appropriate to make a copyright-compliant nonvolatile memory to have an outer shape different from that of an old nonvolatile memory. In other words, both the copyright-compliant nonvolatile memory and the non-copyright-compliant nonvolatile memory can be loaded into the portable terminal.

A non-copyright-compatible nonvolatile memory is used for recording copyright-free digital data such as audio and video such as a conference recording. On the other hand, a copyright-compatible nonvolatile memory is used for recording digital data (for example, music data) output from an existing recording medium such as a CD (compact disk) or an MD (mini disk). In other words, encryption or a predetermined authentication process is performed on a record of data whose copyright is to be protected, thereby preventing illegal copying. For this reason, a copyright-compliant nonvolatile memory requires a signal processing circuit for an authentication process and an encryption process to be mounted as compared with a non-copyright-compliant nonvolatile memory.

There are two types of portable terminals, a portable terminal capable of mainly recording conferences, and a portable terminal capable of downloading encrypted digital data from the PC or the like. Here, a non-copyright compatible non-volatile memory is inserted and used in a portable terminal that can only record conferences, while a non-copyright non-volatile memory is inserted in a portable terminal that can download data from a PC or the like. Should be used. However, as described above, the nonvolatile memory for copyright and the nonvolatile memory for non-copyright
It has almost the same shape and is difficult for general users to recognize. In addition, not all users understand the correspondence between the type of the portable terminal and the type of the nonvolatile memory before using it. Further, for example, a usage form in which a microphone is connected to the above-mentioned downloadable portable terminal to record a conference or the like can be considered. In such a case, a non-copyright-compatible nonvolatile memory is inserted and used. Good thing.

In view of these circumstances, namely, difficulty in identifying the type of the nonvolatile memory, lack of understanding of the correspondence between the type of the portable terminal and the type of the nonvolatile memory, and the possibility of being properly used according to the usage form. However, when a user uses a portable terminal, erroneous insertion of an inappropriate type of nonvolatile memory is considered to occur frequently, and a countermeasure is required.

[0009]

SUMMARY OF THE INVENTION In view of such circumstances, an object of the present invention is to enable a general user to load an appropriate memory into a portable device and use it.

For this purpose, the portable terminal of the present invention includes a first memory having signal processing means for performing copyright protection processing (for example, encryption processing and authentication processing), and the above-mentioned signal processing means. A second memory that can be selectively mounted, and a determination unit that determines whether the mounted memory is the first memory or the second memory, and a notification according to the determination result of the determination unit. Notification means for performing the following. Further, as a portable terminal of the present invention, a first terminal for recording data subjected to predetermined compression processing and encryption processing is provided.
And a second memory for recording data that has been subjected to a predetermined compression process that is the same as or different from the above-mentioned compression process can be selectively mounted, and whether the mounted memory is the first memory or not. Alternatively, it is provided with a discriminating means for discriminating whether the memory is the second memory, and a notifying means for notifying according to a discrimination result of the discriminating means. That is, in the present invention, the type of the loaded memory is determined by the determination unit, and the determination result can be notified to the user, thereby eliminating the inconvenience of the erroneous insertion.

[0011]

Embodiments of the present invention will be described below. This embodiment is an example of a portable device using a memory card having a built-in flash memory as a removable recording medium. This portable device is a recording and reproducing device for digital audio signals and the like,
Hereinafter, the portable device is also referred to as a “recorder”.

FIG. 1 shows the configuration of the portable device (recorder 1) and the memory card 40 of the present embodiment. In FIG. 1, the configurations of the recorder 1 and the memory card 40 are shown as respective portions surrounded by broken lines. The memory card 40 is detachable from the recorder 1. The recording / reproducing system using the recorder 1 and the memory card 40 can also record / reproduce moving image data, still image data, and the like in addition to digital audio signals.

The recorder 1 comprises a CPU 2 and this CPU 2
A security block 3 connected by a bus to
It has an operation unit 4 and a display device 5. Security block 3 is DES (Data Encryption Standard)
Encryption circuit and a circuit for authentication processing.

The operation unit 4 is provided with various keys, buttons, a jog dial, and the like relating to recording and reproduction for the user to perform various operations. Operation information such as a recording command and a reproduction command generated in response to a user operation from the operation unit 4 is provided to the CPU 2 via a bus. The display device 5 is formed of, for example, a liquid crystal panel, and has a CP
Various information, the operation state of the recorder 1, and the like are displayed based on the control of U2.

The recorder 1 further includes an audio interface 6, an encoder / decoder 7, an A / D converter 9, and a D / A converter 12. The audio interface 6 performs interface processing of audio data between the external input / output and the internal encoder / decoder 7.

The encoder / decoder 7 encodes the digital audio signal with high efficiency and decodes the high efficiency encoded data. ATRAC (Adaptive Tr) used in the mini-disc system is a highly efficient encoding method.
an improved form (ATRAC ansform Acoustic Coding)
3) can be used. In ATRAC3, 4
4. Process audio data of 16 bits per sample sampled at 1 kHz. The smallest data unit when processing audio data in ATRAC3 is a sound unit (SU). One SU is obtained by compressing 1024 samples (1024 × 16 bits × 2 channels) into several hundred bytes, and is approximately 2.3 ms in time. Such ATRAC3 compresses the audio data to a data amount of about 1/10. It should be noted that there is little deterioration in sound quality due to the compression / decompression processing.

When an analog audio signal is supplied to the recorder 1 as a reproduction output of an external audio output device, for example, a CD player or MD (mini disc) player, a tuner output, a tape player reproduction output, or the like, Analog audio signal from terminal 8 is A / D
The signal is supplied to the converter 9, converted into a digital audio signal, and supplied to the audio interface 6. Further, for example, when a digital audio signal is supplied to the recorder 1 as reproduction output from an external audio output device, received data of a digital broadcast, audio data distributed over a network, or the like, the digital audio signal is supplied to a terminal 10. To the audio interface 6. The digital audio signal is transmitted from an external device to the recorder 1 via, for example, an optical cable.
Is transmitted to

The audio interface 6 performs a process of selecting an input audio signal as described above.
The selected audio signal is supplied to the encoder / decoder 7. The encoder / decoder 7 performs the above-described high-efficiency encoding process on the supplied digital audio signal, and encodes the encoded data into the security block 3.
To supply.

In the security block 3, the supplied encoded data is encrypted. The security block 3 and a security block 52 in the memory card 40 described later are provided to protect the copyright of the content (here, digital audio signal). The security block 3 of the recorder 1 includes a plurality of security blocks. It has a master key and a unique storage key for each device. Then, encryption and decryption processing can be performed using these keys. Furthermore, it has a random number generation circuit for generating a session key. When the memory card 40 containing the security block 52 is inserted into the recorder 1, authentication for confirming whether the inserted memory card 40 is genuine is performed. Session keys can be shared between Each of the security blocks 3 and 52 has a function for performing a predetermined authentication process.

As will be described in detail later, the memory card 40
Is a flash memory (non-volatile memory) 42, DES
The security block 52 including the encryption circuit, the communication interface, the register and the like are integrated on a single chip. This memory card 40 is the recorder 1
It is detachable with respect to. Note that the recorder 1 of this example
Then, a memory card without encryption function, that is,
It is also possible to use a memory card without a security block (a memory card 40 'described later).

The audio data input as described above and subjected to the high-efficiency encoding processing in the encoder / decoder 7 and the encryption processing in the security block 3 are processed by the CPU.
2 is supplied. The CPU 2 includes a memory card 40 mounted on a detachable mechanism (not shown) and a memory interface 1.
The communication is performed via the communication device 1. Note that serial communication is performed between the CPU 2 and the memory card 40 by the memory interface 11. The CPU 2 supplies the audio data subjected to the encryption processing in the security block 3 to the memory card 40 via the memory interface 11 and writes the audio data to the flash memory 42. Through the above-described path, the input audio signal is recorded on the memory card 40.

When reproducing the audio data recorded on the memory card 40, the CPU 2 transfers and takes in the audio data read from the flash memory 42 via the memory interface 11. Then, the read audio data, that is, the encrypted audio data is supplied to the security block 3 to execute the decryption as decryption. Further, the decoded audio data is subjected to a decoding process for the compression process by the encoder / decoder 7.

The audio signal converted to 16-bit data per sample by sampling at 44.1 kHz by the decoding process in the encoder / decoder 7 is supplied to the D / A converter 12 via the audio interface 6 and converted into an analog audio signal. The signal is output from the terminal 13 to an external device. Alternatively, audio data from the encoder / decoder 7 and decoded data from the security block 3 are output as digital data via the audio interface 6 from the terminals 14 and 15 to an external device.

In the above description, encryption when recording audio data to the memory card 40 and decryption when reproducing from the memory card 40 are performed by the recorder 1.
Was performed in the security block 3 on the side,
These are the security blocks 5 in the memory card 40.
2 may be performed. Further, the data may be encrypted by the security block 3 during recording and decrypted by the security block 52 during reproduction. Conversely, the data may be encrypted by the security block 52 during recording and decrypted by the security block 3 during reproduction. May be performed. Furthermore, the security block 3 and the security block 52 may double-encrypt during recording, and decrypt the security block 52 and the security block 3 during reproduction. Since the security blocks 3 and 52 have the same encryption function, any one of the security blocks 3 and 52 can be realized by setting the sharing and transmission / reception of keys for encryption and decryption.

The security blocks 3 and 52 have an authentication function in addition to the encryption and decryption functions. When the memory card 40 is mounted on the recorder 1, the security blocks 3 and 52 are used.
Authentication data is transmitted and received between the two, and authentication OK / NG is determined based on the result of the data communication. For example, in the case of the authentication NG, a processing method in which the recorder 1 does not execute the recording / reproducing operation on the memory card 40 can be realized. As a specific method of the authentication processing, when the memory card 40 is attached to the recorder 1, the recorder 1 transmits certain first authentication data held in the security block 3 to the memory card 40. . Security block 52 of memory card 40
Generates a second authentication data corresponding to a certain first authentication data transmitted in a predetermined manner, and adds the second authentication data to the first authentication data. The data is transmitted to the recorder 1 side. On the recorder 1 side, the CPU
2 can determine the authentication OK / NG by monitoring whether or not the second authentication data appropriately corresponding to the first authentication data has been transmitted from the memory card 40.
Such an authentication function and an encryption / decryption function are provided mainly for copyright protection as described above.

FIG. 2 shows the configuration of the memory card 40. In the memory card 40, a control block 41 and a flash memory 42 are configured as a one-chip IC.

The CPU 2 of the recorder 1 and the memory card 40
The bidirectional serial interface (memory interface 11) between the two consists of ten signal lines. Major 4
These signal lines include a clock line SCK for transmitting a clock during data transmission, a status line SBS for transmitting status information, and a data line D for transmitting data.
IO and an interrupt line INT. In addition, two ground lines GND and two power supply voltage lines VCC are provided for power supply. Note that the remaining two signal lines Reserve are undefined lines.

The clock line SCK is a line for transmitting a clock synchronized with data. Status line SBS
Is a line for transmitting a signal indicating the status of the memory card 40. The data line DIO is a line for inputting / outputting a command and encrypted audio data.

The interrupt line INT is a line for transmitting an interrupt signal requesting an interrupt from the memory card 40 to the CPU 2 of the recorder 1. The interrupt signal is generated when the memory card 40 is mounted on the recorder 1. However, in this example, since the interrupt signal is transmitted via the data line DIO, the interrupt line INT is grounded and is not used.

Serial / parallel conversion / parallel / serial conversion / interface block (abbreviated as S / P, P / S, IF block) 43 of control block 41
Are connected to the memory interface 11 of the recorder 1 and the control block 41 connected via the plurality of lines described above.
Interface with This S / P, P / S, IF
The block 43 converts the serial data received from the recorder 1 into parallel data and takes it into the control block 41, and converts the parallel data from the control block 41 into serial data and sends it to the recorder 1.

The S / P, P / S, IF block 43
Separates the command and data for normal access to the flash memory 42 from the command and data required for encryption when receiving the command and data transmitted via the data line DIO. That is, as a signal format transmitted via the data line DIO, since a command is transmitted first and then data is transmitted, the S / P, P / S, IF block 4
Reference numeral 3 refers to the command code to determine whether the command and data are required for normal access or are required for encryption. According to the result of this determination, a command necessary for normal access is stored in the command register 44, and data is stored in the page buffer 45 and the write register 46.

An error correction encoding circuit 47 is provided in association with the write register 46. The error correction coding circuit 47 generates a redundant code of an error correction code for the data temporarily stored in the page buffer 45.
Output data from the command register 44, page buffer 45, write register 46, and error correction encoding circuit 47 are supplied to a flash memory interface and a sequencer (abbreviated as memory IF, sequencer) 51.

The memory IF / sequencer 51 is an interface between the control block 41 and the flash memory 42, and controls the exchange of data between the two. Data is written to the flash memory 42 via the memory IF and the sequencer 51.

When reading data, the flash memory 4
The data read from the memory IF and the sequencer 5
1, the page buffer 45, the read register 48,
It is supplied to an error correction circuit 49. Page buffer 45
Is error-corrected by the error correction circuit 49. Then, the output of the page buffer 45 and the output of the read register 48 which have been subjected to the error correction are S.
/ P, P / S, supplied to the IF block 43, and sent to the CPU 2 of the recorder 1 through the serial interface described above.
Supplied to

The configuration ROM 50
Is a portion where version information of the memory card 40, various attribute information, and the like are stored. Also memory card 4
0 is provided with an erroneous erasure prevention switch 60 that can be operated by the user as needed. When the switch 60 is in the connection prohibition state of erasure, even if a command instructing erasure of the data in the flash memory 42 is sent from the recorder 1 side, the flash memory 42
Is prohibited. The oscillator 61 is connected to the memory card 40
Is a part that generates a clock which is a timing reference for the processing of FIG.

As described above, for the purpose of copyright protection, the security block 3 of the recorder 1 and the security block 52 of the memory card 40 perform authentication processing and contents (ATR) written in the flash memory 42.
Audio data compressed by AC3, ATR
(Referred to as AC3 data). The security block 52 includes a buffer memory 53, a DES encryption circuit 54, a nonvolatile memory 55, and the like.

The security block 52 has a plurality of authentication keys and a unique storage key for each memory card. The non-volatile memory 55 stores a key required for encryption and is invisible (cannot be read) from the outside.
It is assumed. For example, a storage key is stored in the nonvolatile memory 55.

Furthermore, a random number generating circuit is provided, which can correctly authenticate with the dedicated recorder 1 (use of a predetermined data format or the like within the same system) and share a session key. The content key for encrypting the ATRAC3 data is encrypted with the session key and transmitted between the recorder 1 and the memory card 40. Similarly to the security block 52 of the memory card 40, the security block 3 of the recorder 1 also has a storage key unique to the set. For example, when the encrypted content is moved, the content key is reset using the storage key.

FIG. 3 shows a memory card 40 'which does not have an encryption function (ie, does not support copyright security). Note that the same parts as those of the memory card 40 in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. Compared to the memory card 40 described with reference to FIG.
The difference is that the security block 52 is not connected to the S and IF blocks 43. In other respects, the memory cards 40 and 40 'are the same. Although not shown, the shape and size of the memory card 40,
40 'are the same.

Since the recorder 1 of this embodiment shown in FIG. 1 is compatible with security, it performs mutual authentication with a memory card, communication of keys used for encryption processing, and the like. If a memory card 40 'shown in FIG. 3 which does not support security is attached to the recorder 1, the recorder 1 determines that the memory card 40' cannot be used because the memory card 40 'is not compatible with security. I do.

There are several methods for the recorder 1 to determine the type of the memory card. In one method, the response status at the time of authentication is monitored. When the memory card is inserted, as described above, the recorder 1 (CPU 2)
Transmits the first authentication data to the memory card in order to perform the authentication. However, when the memory card 40 'is mounted, the security block 52 does not exist, so that the memory card 40' A response (the above-described second authentication data) cannot be received. Therefore CPU2
If a normal response is not obtained even after a certain period of time has elapsed after the transmission of the first authentication data, it can be determined that the attached memory card is not compatible with security.

As another method, there is a method of recording security-compatible / non-compliant identification information in a memory card area (boot area). That is, when the memory card is inserted, the CPU 2 reads the security-compatible / non-compliant identification information in the data in the boot area which is first read into the recorder 1, and the recorder 1 determines the type of the memory card based on the identification information. 40 or 40 ')
Can be determined.

By the way, not only the recorder 1 shown in FIG. 1, but also a device (recorder) which uses a memory card 40 'which does not support security exists. For example CC
A device such as a digital handy movie having a function of recording an image captured by the D camera on a memory card and reproducing the captured image from the memory card can use the memory card 40 '. In general, such a digital handy movie cannot use the memory card 40 compatible with security. Further, a so-called I-type recording in which dictation recording in place of a tape recorder is performed on the memory card is performed.
Regarding the C recorder, since the contents of the conference to be recorded usually do not need to be concerned about the copyright, the memory card 40 'is used. That is, a device that targets audio data for which copyright is not entangled as the recorded content uses the memory card 40 '. The recorder as such a device has, for example, a configuration in which the security block 3 is removed from the configuration in FIG.

When audio data or the like is recorded on the memory card 40 'by such a recorder, compression processing is performed without performing encryption processing. The compression method may be ATRAC3 as in the case of the recorder 1, or another compression method such as ATRAC or ADPCM may be adopted. That is, as described above, data that has been subjected to ATRAC3 compression processing and encryption processing is recorded on the memory card 40, but compression processing using ATRAC3 or another method is performed on the memory card 40 ′. Data that has not been subjected to encryption processing is recorded.

On the other hand, in a recorder for recording audio data as well, a music recorder (portable terminal) for compressing a digital audio signal output from a digital audio device such as a CD player and recording the compressed digital audio signal on a memory card. Since copyright protection must be realized, the memory card 40 is used, and authentication and encryption can be performed.

As described above, in consideration of the necessity of copyright protection, the recorder 1 of the present embodiment uses the memory card 4
0 is to be used, but as described above, the memory card 40 and the memory card 40 'have the same external shape and size, and are difficult to distinguish, so that it is difficult for the user to correctly use them. And consequently,
It is considered that the memory card 40 'is attached to the recorder 1 in many cases.

Therefore, in the recorder 1 of the present embodiment (for example, a portable music terminal for downloading music from a recording medium such as a CD), the CPU 2 operates as shown in FIG. Such processing is performed.

That is, the CPU 2 monitors the insertion of the memory card in step F101, and advances the processing to step F102 in response to the insertion of the memory card into the recorder 1. In step F102, the CPU 2 starts an authentication process for the memory card. That is, the authentication data is transferred to the memory card. If a formal response is obtained as a result of this authentication processing as described above, the CPU
2 is a memory card 40 on which a security block 53 is mounted for the purpose of copyright protection.
Can be determined. On the other hand, if a normal response is not obtained within a predetermined time, it can be determined that the memory card 40 'which is not compatible with copyright protection is mounted. In accordance with this determination, the CPU 2 branches the process in step F103. That is, when it is determined that the memory card 40 is a copyright-compliant memory card, the process proceeds to step F104 to perform recording / reproduction on the memory card (actually, a recording or reproduction operation is performed according to a subsequent user operation). Do). on the other hand,
If it is determined that the memory card is non-copyright compliant, the display device 5 displays a warning (notifies that it is a non-copyright compliant memory card) on the display device 5 in step F105. Or, it is notified by a warning sound or the like. And in this case, even if the user subsequently performs an action,
No recording or playback operation is performed.

By performing such processing, when the user mistakenly inserts the memory card 40 ′ into the recorder 1,
Recording and reproduction are not performed as they are, and the user is appropriately notified, so that the user can take measures to replace the memory card.

On the other hand, in the above-described recorder for dictation recording of the digital handy movie and the contents of the conference, the memory card 40 may be erroneously inserted. Therefore, for example, in a dictation recording recorder or the like, the processing as shown in FIG. 5 may be performed.

That is, the control unit (CP) of the dictation recorder
U) monitors the insertion of the memory card in step F201, and advances the process to step F202 in response to the memory card being inserted into the recorder 1. Step F202
In, the CPU reads the data in the boot area from the memory card. Then, it reads security-related / non-compliant identification information regarding copyright in the data in the boot area, and determines whether or not the memory card is non-copyright-compliant. In accordance with this determination, the CPU branches the process in step F203. That is, if it is determined that the memory card 40 'is a non-copyright compatible memory card, the process proceeds to step F2.
In step 04, recording / reproducing is performed on the memory card (recording / reproducing operation is performed according to a user operation). On the other hand, if it is determined that the memory card 40 is a copyright-compliant memory card, a warning display (notification that the memory card is a copyright-compliant memory card) is displayed to the user on the display device of the recorder in step F205. Or, it is notified by a warning sound or the like. Then, in this case, even if the user performs an operation thereafter, the recording or reproducing operation is not executed.

By performing such processing, when the user mistakenly inserts the memory card 40 into the dictation recorder, recording and reproduction are not performed as it is, and the user is properly notified. The user can take the action of replacing the memory card.

In the process shown in FIG. 4, whether or not the memory card 40 is copyright-compliant is determined based on the authentication result. However, it may be determined from the identification information of the boot area. In the process of FIG. 5, it is determined whether or not the memory card 40 'is non-copyright compliant based on the identification information of the boot area. However, such an dictation recorder is equipped with a security block, If the processing is possible, the type of the memory card may be determined based on the authentication result.

FIG. 6 shows an example of a notification display on the display device 5 of the recorder 1. For example, as shown in FIG.
The copyright corresponding display 5b can be displayed. Then, when the memory card 40 'is inserted into the recorder 1 and the process proceeds to step F105 in FIG. 4 described above, the copyright non-compliant display 5a is executed as shown in FIG. 6B, and the user is notified of the erroneous insertion. To do. When the memory card 40 is inserted, the copyright notice 5b may be displayed as shown in FIG.

As shown in FIGS. 7 (a) and 7 (b), in a part of the display area of the display device 5, the copyright non-compliant display 5a and the copyright compatible display 5b have a key mark on / off. A notification display that can be expressed by being performed is also conceivable. Further, in addition to the copyright non-compliant display 5a, for example, a message or a symbol urging the replacement of the memory card may be displayed.

By the way, in the recorder 1 to which the memory card 40 is to be mounted, recording may be performed on the memory card 40 ', that is, there is a case where the copyright does not need to be considered. For example, when a microphone can be connected to the recorder 1 to enable recording of a conference or the like, copyright protection is not required.
It is preferable that both of the memory cards 40 and 40 'can be used. Therefore, for example, step F in FIG.
Even after proceeding to the notification processing in 105, a processing method in which recording is performed as it is when a recording operation is performed on the microphone input voice is conceivable.

The embodiment has been described above.
The present invention is applicable not only to portable terminals as recorders of audio data such as music, but also to portable terminals such as character data, moving image data, still image data, and data (programs, files, etc.) for computer use. For example, as character data, there are character data that is subject to publication and is subject to copyright protection, and character data that does not require consideration of copyright protection such as personal typed sentences and diaries. Therefore, the character data to be protected by the copyright should be recorded and reproduced by a system having a security block like the recorder 1 and the memory card 40, and as a portable terminal targeting such character data. The present invention is applicable. Video data,
The same applies to still image data and data for computer use.

Further, as the above-mentioned memory card, a nonvolatile memory represented by a flash memory is taken as an example, but a memory card or an optical memory card in which a backup battery is mounted on a volatile memory may be used.

[0059]

As described above, according to the present invention, a memory is used as a portable terminal to which a first memory corresponding to copyright protection and a second memory not corresponding to copyright protection can be selectively mounted. Since the type of the memory is determined and the type is notified when the memory is mounted, an effect is obtained that erroneous insertion and erroneous recording of a memory having substantially the same appearance can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram of a recorder according to an embodiment of the present invention.

FIG. 2 is a block diagram of a security-compatible memory card that can be mounted on the recorder according to the embodiment;

FIG. 3 is a block diagram of a non-security compatible memory card that can be mounted on the recorder according to the embodiment;

FIG. 4 is a flowchart of processing when a memory card is inserted into the recorder of the embodiment.

FIG. 5 is a flowchart of processing when a memory card is inserted into a recorder that does not support copyright.

FIG. 6 is an explanatory diagram of a notification display example of the recorder according to the embodiment;

FIG. 7 is an explanatory diagram of a notification display example of the recorder according to the embodiment;

[Explanation of symbols]

Reference Signs List 1 recorder, 2 CPU, 3,52 security block, 4 operation unit, 5 display device, 6 audio interface, 7 encoder / decoder, 9
A / D converter, 11 Memory interface, 12
D / A converter, 40, 40 'memory card

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G06K 17/00 G06K 17/00 L 9A001 G10L 19/00 G10L 9/18 J F term (reference) 5B017 AA03 BA07 CA14 5B019 BC04 HF07 HF10 JA10 5B058 CA27 KA13 KA31 5B076 FA00 FC06 FC08 5D045 DB02 9A001 BB03 EE03 EE05 JJ19 JJ25 KK62

Claims (2)

[Claims] 1. A first memory having signal processing means for performing copyright protection processing and a second memory having no signal processing means are selectively mountable. The installed memory is the first memory or the second memory.
A portable terminal comprising: a determination unit configured to determine whether the memory is a memory; and a notification unit configured to perform notification according to a determination result of the determination unit. 2. A first memory for recording data that has been subjected to predetermined compression processing and encryption processing, and a second memory for recording data that has been subjected to predetermined compression processing that is the same as or different from the compression processing. Can be selectively mounted, and the mounted memory is either the first memory or the second memory.
A portable terminal comprising: a determination unit configured to determine whether the memory is a memory; and a notification unit configured to perform notification according to a determination result of the determination unit.