JP2003296672A - Recording medium identification unit and method, reproducing unit and method, its program and recording medium recording program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reproducing unit capable of efficiently reproducing data recorded in an information recording medium after carrying out identification determination of the information recording medium. <P>SOLUTION: When a PC card 40 is attached to a card type adapter 10, a system controller 16 of an audio control part 6 reads PC card inherent identification information stored in an inherent information storing means 14 of the PC card 40 via a reading part 5. A recording medium identifying means 19 compares the read inherent identification information with inherent identification information precedently recorded in an identification information recording means 23, and it identifies whether or not the PC card is the same as a PC card precedently attached to the card type adapter 10. When it is determined that the attached PC card is the same as the precedently attached PC card by the identification, the system controller 16 carries out a reproducing process on the basis of list data precedently recorded in a list recording means 22. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium identifying apparatus for identifying a detachably attachable information recording medium, a method therefor, and a reproducing apparatus for reproducing data recorded on the detachably attachable information recording medium. , This way, this program,
And a recording medium for recording this program.

[0002]

BACKGROUND ART Conventionally, a magnetic tape, a readable / writable magneto-optical disk, a compact disk, a mini disk, or the like has been known as an information recording medium of an information recording / reproducing apparatus for recording or reproducing music data. Further, in recent years, with the improvement of semiconductor integration technology, a large-capacity and small-size rewritable IC (Integrated Circuit) card or the like has been attracting attention as an information recording medium (solid-state memory) for music data.

In recent years, an audio device equipped with a card-type adapter so that such an information recording medium can be detachably mounted has been introduced.

By the way, the capacity of music data reproduced per minute is about 10 megabytes, and a relatively large capacity is required. Therefore, this music data is IS
MP3 (MPEG (Moving Picture Expert), which is an international standard method of audio compression technology set by O (International Organization for Standardization)
s Group) -1 Audio Layer-3) method, etc.
A configuration is known in which data is compressed and recorded for about a minute.

The flow chart shown in FIG. 7 is a PC in which music data compressed by the conventional MP3 method is recorded.
It shows the reproduction control of the card.

First, the user inserts the PC card into the card type adapter of the audio device (step S31).
When the PC card is inserted into the card type adapter in step S31, the audio device detects the mounting state of the PC card by the interface section (step S32).

When the PC card is detected in step S32, the audio device reads the list data in which the identification data (folder name, file name) for identifying the music data stored in the PC card is listed. (Step S33).

In step S33, the read list data is recorded in the recording means (step S34).

Then, the list data recorded in the recording means is read. The data of the MP3 file corresponding to the first song listed based on the read list data is retrieved from the PC card and received, and the M of the first song is received.
The data of the P3 file is reproduced (step S35).

In step S35, the MP3 of the first song
After the reproduction of the file is completed, the audio device searches the PC card for the data of the MP3 file corresponding to the second music again based on the list data, and receives the MP3 file data for the second music
The data of three files is reproduced (step S36). In this way, the audio device sequentially reproduces the list data recorded in the recording means.

Here, for example, the power of the audio device is turned on.
It is conceivable to turn off the power of the FF or the card type adapter (step S37) and replace it with another PC card. The interface unit cannot detect the mounting state of the PC card unless the power supply of the card type adapter is ON. Therefore, when the power of the card-type adapter is turned on (step S38), the interface unit again detects that the PC card is attached (step S39).

Then, in step S39, when the mounting state of the PC card is not detected, the reproduction of the PC card is ended. Further, when the mounting state of the PC card is detected, the steps S37 and S3 are performed.
During 8, the list data recorded in the recording means is initialized because it may have been replaced with another PC card (step S40).

After the list data recorded in the recording means is initialized in step S40, the above step S40 is performed.
Returning to step 33, the process is restarted from the reading of the list data in the attached PC card.

[0014]

In the reproduction control of the information recording medium as described above, even if the same PC card is mounted after the card type adapter power supply is turned off and then the power supply is turned on again, The list data recorded in the recording means is initialized. That is, the list data stored in the same PC card is read again, and reproduction is performed from the beginning according to the read list data.

Here, when the user wants to listen to the music data that was reproduced before the power switch, it is necessary to perform fast-forwarding or the like and operate the audio device to give an instruction to reproduce the music data. .

Therefore, a complicated work of operating the audio apparatus on the user side occurs, which is not convenient at all.

In view of the above points, the object of the present invention is to
A recording medium identification device capable of identifying whether or not the previously installed information recording medium and the previously installed information recording medium are the same when the information recording medium is installed,
This method, a reproducing apparatus capable of efficiently reproducing data recorded on the information recording medium after performing identification determination of this information recording medium, this method, this program, and a recording medium recording this program To provide.

[0018]

[Means for Solving the Problems]

According to a first aspect of the present invention, there is provided a recording medium identification device in which an information recording medium for recording identification information unique to the information recording medium is detachably attached, and the information recording medium attached to the attaching means. Reading means for reading the identification information peculiar to the information recording medium recorded on the recording medium, identification information storage means for storing the identification information peculiar to the information recording medium read by the reading means, and the reading means read by the reading means. The identification information peculiar to the information recording medium and the identification information peculiar to the information recording medium stored in the identification information storage means are collated, and the information recording medium mounted on the mounting means is mounted before the mounting means. And a recording medium identifying means for identifying whether or not the information recording medium is the same as the information recording medium.

In the present invention, identification information unique to the information recording medium is recorded on the information recording medium. The reading unit reads the identification information unique to the information recording medium of the information recording medium mounted on the mounting unit. Further, the identification information peculiar to the information recording medium read by the reading means is stored in the identification information storage means. Then, the recording medium identification means collates the identification information unique to the information recording medium read by the reading means with the identification information unique to the information recording medium stored in the identification information storage means. Further, the recording medium identifying means identifies whether or not the information recording medium mounted on the mounting means is the same as the information recording medium previously mounted on the mounting means. As a result, when the information recording medium is mounted on the mounting means, it is possible to identify and determine whether the mounted information recording medium is the same as the previously mounted information recording medium.

According to a second aspect of the present invention, the recording medium identification device according to the first aspect is expanded to a recording medium identification method, and an identification information peculiar to the information recording medium is recorded and a removable information recording medium is provided. Recognizing the mounting, reading the identification information unique to the information recording medium of the information recording medium in which the mounting is recognized, storing the read identification information unique to the information recording medium, and reading the unique information recording medium And the stored identification information peculiar to the information recording medium are collated to identify whether the information recording medium is the same as the previously mounted information recording medium. As a result, the same effect as that of claim 1 is obtained.

According to a third aspect of the present invention, in the reproducing apparatus, an information recording medium on which data, list data for listing the data, and identification information unique to the information recording medium are recorded is detachably mounted. A recording medium identification device according to claim 1, and a list storage means for storing the list data,
Reproduction means for reproducing the data according to the list data stored by the list storage means.

In the present invention, the recording medium identification device according to the first aspect identifies whether or not the information recording medium mounted in the mounting means is the same as the information recording medium previously mounted in the mounting means. . Here, for example, after the identification, if the reproducing means determines that they are the same by the recording medium identifying device, the data of the information recording medium is reproduced according to the list data stored in the list storing means before. To process. In this way, after the recording medium identification device identifies the same, the data that was previously reproduced can be continuously reproduced. That is, after the identification determination,
Data reproduction processing can be performed efficiently.

According to a fourth aspect of the present invention, there is provided a reproducing apparatus in which data, list data for listing the data, and an information recording medium for recording identification information unique to the information recording medium are detachably mounted, and the mounting means. Reading means for reading data recorded on the information recording medium mounted on the means, list data, and identification information unique to the information recording medium, and identification for storing the identification information unique to the information recording medium read by the reading means Information storage means, list storage means for storing list data read by the reading means, identification information unique to the information recording medium read by the reading means, and the information record stored in the identification information storage means The identification information peculiar to the medium is collated, and the information recording medium mounted on the mounting means is mounted before the mounting means. Recording medium identifying means for determining whether or not the information recording medium is identical to the previously installed information recording medium, and the information recording medium mounted in the mounting means by the recording medium identifying means is previously mounted in the mounting means. And a reproduction means for reproducing the data based on the list data stored in the list storage means when it is determined that the data is the same as the information recording medium.

In the present invention, the information recording medium has data,
List data for listing this data and identification information unique to the information recording medium are recorded. The reading unit reads the data of the information recording medium mounted on the mounting unit, the list data, and the identification information unique to the information recording medium. Further, the identification information peculiar to the information recording medium read by the reading means is stored in the identification information storage means. Also,
The list data read by the reading means is stored in the list storage means. Then, the recording medium identification means collates the identification information unique to the information recording medium read by the reading means with the identification information unique to the information recording medium stored in the identification information storage means. Further, the recording medium identifying means identifies whether or not the information recording medium mounted on the mounting means is the same as the information recording medium previously mounted on the mounting means.
After that, when the recording medium identifying means determines that they are the same, the reproducing means reproduces the data of the information recording medium based on the list data previously stored in the list storing means. As a result, after the recording medium identification device identifies the same, the previously reproduced data can be continuously reproduced based on the list data acquired in advance, and the data can be efficiently reproduced. Playback processing is possible.

According to a fifth aspect of the present invention, in the reproducing apparatus according to the third or fourth aspect, there is provided reproduction information recording means for recording reproduction information relating to the data reproduced by the reproducing means, and the reproducing means. When the recording medium identification device identifies that the information recording medium mounted in the mounting means is the same as the previously mounted information recording medium, the list data stored in the list storage means and the reproduction information recording means are stored in the list storage means. It is characterized in that the data is reproduced based on the recorded reproduction information.

In the present invention, the reproduction information recording means records the reproduction information regarding the data reproduced by the reproduction means. When the reproducing means determines by the recording medium identification device that the information recording medium mounted in the mounting means is the same as the information recording medium previously mounted, the list data and the reproduction information previously stored in the list storing means. The data of the information recording medium is reproduced based on the reproduction information recorded in the recording means. Thus, for example, the reproduction information recording means records the identification name of the data, the reproduction time (minutes, seconds), etc. as the reproduction information regarding the data reproduced by the reproduction means. Then, after the information recording medium has been attached / detached, the recording medium identification means identifies the information recording medium currently mounted in the mounting means as the same as the information recording medium previously mounted. After this decision,
The reproduction means performs reproduction processing based on the list data stored in the list storage means and the reproduction information recorded in the reproduction information recording means. That is, the reproducing device identifies the information recording medium mounted in the mounting means,
It is possible to continuously reproduce the data that was being reproduced when the device was previously mounted, for example, from a time substantially the same as the interrupted reproduction position (minute, second).

According to a sixth aspect of the present invention, in the recording medium reproducing apparatus according to the fourth or fifth aspect, the reading means is the information recording medium previously attached to the attaching means by the recording medium identifying means. When it is identified that the information recording medium is not the same as the existing information recording medium, the reading of the list data of the mounted information recording medium is started.

In the present invention, the recording medium identifying means identifies that the information recording medium loaded in the loading means is not the same as the information recording medium previously loaded. After that, the reading means starts reading the list data of the mounted information recording medium. As a result, the reproduction processing of the data of the information recording medium can be efficiently performed after the identification determination of the mounted information recording medium by the recording medium identifying means.

According to a seventh aspect of the present invention, the recording medium reproducing apparatus according to the fourth aspect is expanded to a recording medium reproducing method. Data, list data for listing the data, and information recording medium specific The identification data is recorded, the attachment of the removable information recording medium is recognized, the list data of the information recording medium whose attachment is recognized and the identification information unique to the information recording medium are read, and the read list data and Identification information unique to the information recording medium is stored, the read identification information and the stored identification information unique to the information recording medium are collated, and the information recording medium previously attached to the information recording medium When it is identified whether they are the same or not, and when it is recognized that the identified information recording medium is the same as the previously installed information recording medium, it is stored as described above. Wherein the reproducing processing the data based on the strike data. As a result, the same operational effect as that of the fourth aspect is obtained.

The invention described in claim 8 is a reproducing program for reproducing an information recording medium, characterized by causing a computer to execute the reproducing method according to claim 7.

In the present invention, for example, a general-purpose computer is used and installed in the computer. As a result, the method of reproducing the information recording medium according to claim 7 can be executed by the computer, and the utilization of the present invention can be greatly promoted.

The invention described in claim 9 is a recording medium for recording a reproduction program, characterized in that the reproduction program according to claim 8 is recorded so that it can be read by a computer.

In the present invention, since the program for executing the recording medium reproducing method according to the seventh aspect is recorded in the recording medium, the handling of the program is easy and the utilization of the present invention can be greatly promoted. .

[0035]

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

[First Embodiment] [Structure of Reproducing Device] FIG. 1 is a diagram showing a structure of an audio device as an information reproducing device according to the present invention. In FIG. 1, reference numeral 1 is an audio device, and the audio device 1 includes an operation unit 2, a CD player 3, an FM / AM tuner 4, a reading unit 5, an audio control unit 6, and a digital / analog (D / A) converter. 7, an amplifier 8 and a display unit 9 are provided. Here, the audio signal output from the audio device 1 is output as audio through the speaker 30.

The operation unit 2 is not shown in the drawings, but
The user gives various operation instructions to the audio device 1, and has various operation keys. In addition,
The operation unit 2 is not limited to the input operation of operation keys,
For example, a configuration may be used in which various conditions are set and input by an input operation using a touch panel, an input operation using voice, or the like.

The CD player 3 reproduces various kinds of music recorded on the CD in response to the operation instruction given from the audio control section 6. The audio signal output from the CD player 3 is input to the amplifier, and the speaker 30
The voice is output via.

The FM / AM tuner 4 is for generating an audio signal by receiving and demodulating an FM broadcast or an AM broadcast in response to an operation instruction given from the audio control section 6. The generated audio signal is input to the amplifier and audio is output via the speaker 30.

The reading section 5 is loaded with a PC card 40 described later, and reads the data stored in the loaded PC card 40. This reading unit 5 is a card type adapter 10.
And an interface (I / F) unit 11.

The card type adapter 10 is a PC card 40.
Is mounted, and specifications such as the shape, storage capacity, and electrical characteristics of the PC card 40 are converted into a predetermined data input / output format. Specifically, the data input / output format is converted to specifications that conform to a widely used PC card. In this way, by converting to the data input / output format using the card type adapter 10 compatible with the specifications of the PC card, it is possible to read the compressed music data regardless of the specifications of the PC card.

Further, the card type adapter 10 has a power source, and when the power source is turned on, the audio device 1 can receive the data in the PC card 40. On the contrary, when the power is turned off, the audio device 1 is connected to the PC card 4
The data in 0 cannot be received. In this state,
The user can attach and detach the PC card 40 from the card type adapter 10.

The interface section 11 connects the PC card 40 mounted on the card type adapter 10 and the audio control section 6. And this interface unit 1
1 detects that the PC card 40 is attached to the card type adapter.

Here, the PC card 40 mounted on the card type adapter 10 is a data storage medium composed of a semiconductor memory, and is called a so-called memory card. As will be described later in detail, the PC card 40 mainly stores music data compressed by the MP3 method and the P data.
Identification data (text data) representing the identification information of the C card 40 is stored.

The audio controller 6 has a CPU (Central
Processing Unit), etc., and ROM not shown
Etc. to read and execute a control program stored in, for example, output a control signal to each component of the audio device 1, and input / output data. Therefore, although not specifically shown, the CPU, ROM, RAM, and I / O are internally provided.
O and bus lines connecting these components are provided.

With this control program, operation control of the CD player 3 and the FM / AM tuner 4, detection of the mounting state of the PC card 40 in the card type adapter 10, PC
The music data in the card 40 is received, the received music data is expanded, and the like. The decompression processing data of the music data decompressed by the audio control unit 6 is output to the D / A converter 7 and is output as voice through the amplifier 8 and the speaker 30. The details of the audio control unit 6 will be described later.

The D / A converter 7 receives the expansion processing data output from the audio control unit 6, converts the expansion processing data into an analog audio signal, and outputs the analog audio signal to the amplifier 8.

The amplifier 8 amplifies the analog audio signal output from the D / A converter 7 and outputs it to the speaker 30.

The display unit 9 displays various information corresponding to the music data output from the audio control unit 6. Specifically, it has a liquid crystal display device.

[Structure of PC Card] As shown in FIG. 1, the PC card 40 as an information recording medium has a CPU 12
A data storage means 13, a unique information storage means 14,
The list information storage means 15 is provided. Although not specifically shown, this PC card 40
Has a slot terminal for connecting to the card type adapter 10.

Although not specifically shown, the CPU 12 electrically connects the slot terminal of the card type adapter 10 and the slot terminal of the PC card 40 according to a predetermined promise.

The data storage means 13 is composed of, for example, a rewritable RAM (Random Access Memory),
The data compressed by a predetermined compression format is stored. The data storage means 13 has several MB to 100 MB.
A degree of data can be stored. Here, IS
In addition to music data compressed in MP3 format defined by O (International Organization for Standardization), JPEG (Joint Photographic Expert)
Group) is stored image data and the like related to the music data compressed. In this data storage means 13,
For example, as shown in FIG.
P3 files and JPEG files are stored (extension is ".mp3").

The unique information storage means 14 is composed of, for example, a flash memory or the like, and stores identification information unique to the PC card 40. As the identification information, for example, a serial number assigned to each product by the producer, and a model number containing a character string representing the producer and a character string representing the model of the producer are stored. The serial number and the model number are text data composed of ASCII code, and the serial number is composed of 20 characters and the model number is composed of 40 characters. Hereinafter, these serial numbers and model numbers will be referred to as unique identification information.

The list information storage means 15 stores list data in which identification data for identifying the data stored in the data storage means 13 is listed. Specifically, as shown in FIG. 3, the list data is a list of identification data (folder name, file name) for identifying music data and video data stored in the data storage means 13 in a predetermined order. ing. Note that FIG. 3 shows list data of music data.

[Arrangement of Audio Control Unit] The audio control unit 6 is, as shown in FIG.
6, a storage unit 17, and a reproducing unit 18.

The system controller 16 controls the entire audio control unit 6 and reads the data stored in the PC card 40 via the interface unit 11. Then, of the read data, the unique identification information and the list data are appropriately recorded in the storage unit 17. The system controller 16 controls the interface unit 11 by constantly sending a control signal to the interface unit 11. And the card type adapter 1
The mounting state of the PC card 40 in 0 is detected.

The system controller 16 comprises a recording medium identifying means 19, a display control means 20, and an operation instructing means 21.

The recording medium identifying means 19 identifies the PC card 40 attached to the card type adapter 10. The recording medium identification means 19 compares the unique identification information read by the reading unit 5 with the unique identification information of the PC card stored in the storage unit 17 and previously mounted on the card type adapter 10. The PC card 40 installed in the card type adapter 10 and the card type adapter 10
It is identified whether or not it is the same as the PC card attached to the.

In such a configuration, the system controller 16 reads the list data from the list information storage means 15 of the PC card 40 via the reading section 5 according to the identification result by the recording medium identification means 19. I am trying.

Specifically, this recording medium identification means 19
However, if it is determined that the PC card 40 attached to the card type adapter 10 and the PC card 40 previously attached to the card type adapter 10 are not the same,
The reading of the list data in the PC card 40 is started. On the contrary, the P attached to the card type adapter 10
When the C card 40 and the PC card 40 previously mounted on the card type adapter 10 are identified as the same, the C card 40 is stored in the PC card 40 according to the list data previously recorded in the storage unit 17. Read song data,
The read music data is output to the reproducing means 18.
Then, the reproducing means 18 decompresses the inputted music data and reproduces it.

Further, when the list data is not recorded in the storage unit 17, the recording medium identification means 19 does not identify the PC card 40. That is, in this case, the system controller 16 reads the list data in the PC card 40 attached to the card type adapter 10 via the reading unit 5 without depending on the identification result of the recording medium identification unit 19. To start.

The display unit control means 20 is electrically connected to the display unit 9 and displays the music title of the MP3 file being reproduced, the reproduction time of the music, and the like. Various information such as the title of the MP3 file and the reproduction time of the song is included in the MP3 file read by the system controller 16 via the reading unit 5. Specifically, when recorded in the MP3 system, information called an ID3 tag is written in the MP3 file. The name of the performer, the title of the music, etc. are stored in this ID3 tag.

The display unit control means 20 is controlled by the system controller 16 via the reading unit 5 and the PC card 4
M read when reading MP3 file in 0
The various information of the ID3 tag is acquired from the P3 file. Then, the acquired various information of the ID3 tag is transmitted to the display unit 9. Further, the display unit 9 is controlled such that the various information transmitted is displayed on the display unit 9 in a predetermined manner.

The storage unit 17 is the system controller 16
The various data in the PC card 40 read in step 3 are recorded. The accumulating unit is configured to include a list recording unit 22 and an identification information recording unit 23.

The list recording means 22 is rewritable S
The system controller 16 records the read list data via the reading unit 5, which is composed of a RAM or the like. Here, when reproducing the MP3 file in the PC card 40, the system controller 16 reads the list data recorded in the list recording means 22. Then, according to the recorded list data, the MP3 file in the PC card 40 is read via the reading unit 5. Then, the read MP3 file is output to the reproducing means 18 again.

When the recording medium identifying means 19 identifies that the PC card 40 attached to the card type adapter 10 and the PC card previously attached to the card type adapter 10 are not the same. The list data previously recorded is rewritten to the list data in the new PC card 40.

The identification information recording means 23 is composed of a rewritable SRAM or the like, and the system controller 16 records the read unique identification information of the PC card 40 via the reading section 5. This identification information recording means 23
Although not shown in the figure, an identification information table is provided, and a serial number and a model number, which are unique identification information, are recorded therein. It should be noted that one type of unique identification information is always recorded in this identification information table, and when a PC card 40 different from the PC card that was previously installed is installed, the contents of the identification information table are sequentially displayed. Will be updated.

The reproducing means 18 is composed of a signal processing circuit such as a DSP, and the system controller 16 inputs MP3 files to be sequentially read through the reading section 5. Then, the input MP3 file is decompressed and the decompressed data of the MP3 file is output to the D / A converter 7.

[PC Card Playback Method] Next, playback control of the PC card 40 and the PC card 40 in the audio device 1 described above will be described with reference to the flowcharts shown in FIGS. 1 and 4. It is assumed that the PC card 40 is reproduced from a state in which no data is written in the list recording unit 22 and the identification information recording unit 23 of the storage unit 17.

First, the user turns on the power of the card type adapter 10 so that the data in the PC card 40 can be read by the audio device 1.

Next, when the user mounts the PC card 40 on the card type adapter 10 (step S1), the interface section 11 of the audio device 1 causes the PC card 4 to operate.
The mounting state of 0 is detected (step S2).

When the mounting state of the PC card 40 is detected in step S2, the system controller 16
Reads the list data stored in the list information storage means 15 of the PC card 40 via the reading unit 5 (step S3).

At the same time as step S3, the system controller 16 causes the PC card 40
The unique identification information stored in the unique information storage means 14 is read (step S4).

Then, in step S3, the read list data is recorded in the list recording means 22 of the storage section 17. At the same time, in step S4, the read unique identification information is recorded in the identification information recording means 23 (step S5).

Next, the system controller 16 reads the list data recorded in the list recording means 22.
Then, according to the list data, the MP3 file of the first song (“111.mp3” in FIG. 3) is recorded on the PC card 4
0 is read from the data storage means 13. Then, the read MP3 file is output to the reproducing means 18.

The reproducing means 18 decompresses the input MP3 file and outputs the decompressed data to the D / A converter 7. The D / A converter 7 converts the decompressed data into an analog audio signal and outputs the analog audio signal to the amplifier 8 and the speaker 30 to reproduce the first music piece of the MP3 file stored in the PC card 40 (step S6). ).

When the reproduction of the first music is completed in step S6, the system controller 16 again
The list data recorded in the list recording means 22 is read. Here, the system controller 16 selects one of the identification names of the MP3 files recorded in the list data.
The second MP3 file recorded ("1" in Fig. 3
12. mp3 ") is the data storage means 1 of the PC card 40.
Read from 3. Then, the read MP3 file is output to the reproducing means 18 and the MP3 file of the second music piece is reproduced (step S7).

As described above, the list data of the list recording means 22 is read by the above procedure, and the MP3 file is reproduced according to the list data.

Here, for example, in step S7,
The user turns off the power of the card-type adapter 10 while the second song of the MP3 file is being reproduced (step S8). That is, the P currently worn by the user
Exchange to a PC card different from the C card 40, or
The data in the installed PC card 40 is rewritten.

Then, in step S8, after the user replaces or reinstalls the PC card 40, the user turns on the power of the card type adapter 10 again (step S9).

In step S9, when the card type adapter 10 is powered on, the system controller 16
By the control signal transmitted from the interface unit 1
1 detects the mounting state of the PC card 40 in the card type adapter 10 (step S10).

In step S10, if the interface section 11 does not detect the mounting state of the PC card 40, the audio device 1 ends the reproduction of the PC card 40. Note that the PC card 40 is not mounted on the card type adapter 10 when the mounting state of the PC card 40 is not detected.

In step S10, the PC card 40
When the mounting state of is detected, the system controller 16 reads the unique identification information in the PC card 40 mounted on the card type adapter 10 via the reading unit 5 (step S11).

Then, the recording medium identifying means 19 identifies whether or not the PC card 40 mounted on the card type adapter 10 and the PC card previously mounted on the card type adapter 10 are the same ( Step S12). Specifically, the unique identification information read in step S11 and the identification information recording means 23 in step S5.
The unique identification information recorded in is read. Then, the two unique identification information are compared to identify the PC card 40.

If it is determined in step S12 that the PC card 40 mounted in the card type adapter 10 and the PC card previously mounted in the card type adapter 10 are not the same, the list recording means 22 The list data of is initialized (step S13). In this determination, between steps S8 and S9,
It is determined that the card has been replaced with a different PC card.

After the list data is initialized in step S13, the process returns to step S3, and the system controller 16 starts reading the list data of the PC card 40 via the reading unit 5.

The list data read in step S3 is updated in the list recording means 22 in step S5. Further, the unique identification information acquired in step S4 is the identification information recording means 23 in step S5.
Will be updated.

Then, the system controller 16 reads the updated list data into the list recording means 22 and sequentially reproduces the MP3 file.

On the other hand, in step S12, when it is determined that the PC card 40 mounted in the card type adapter 10 and the PC card previously mounted in the card type adapter 10 are the same, the system controller 16 reads the list data recorded in the list recording means 22 (step S14). It should be noted that in this determination, the same P is set between step S8 and step S9.
It is determined that the C card 40 has been reattached to the card type adapter 10 or that the PC card 40 has not been removed from the card type adapter 10.

Then, in step S8, the system controller 16 reads the MP3 file of the second tune whose reproduction has been interrupted from the data storage means 13 of the PC card 40. Then, the read MP3 file is output to the reproducing means 18 and reproduced.

That is, step S8 and step S
If the PC card 40 is not exchanged during 9, the recording medium identification means 19 determines that the PC card 40 is the same as the PC card previously mounted in the card type adapter 10. . Then, step S8
In, the reproduction is sequentially performed from the MP3 file of the second tune whose reproduction is interrupted.

In the reproduction control of the PC card 40 described above, the list recording means 22 and the identification information recording means 23.
The case has been described where the PC card is reproduced from the state in which no data is written. On the contrary, when the PC card 40 is reproduced from the state in which the data is written in the list recording means 22 and the identification information recording means 23, it is started from step S10.

In step S12, if the unique identification information of the identification information recording means 23 disappears due to some trouble and the recording medium identification means 19 cannot read the unique identification information, the display control means 20 causes the display section to display. 9 is controlled to display an error. Then, returning to step S3, the system controller 16 causes the PC card 40
The reading of the list data stored in the list information storage means 15 is started. Then, according to the list data, the MP3 file which is the first music piece is reproduced.

Furthermore, in step S14, when the system controller 16 reads the MP3 file from the PC card 40 according to the list data, and the MP3 file of the PC card 40 has disappeared, the display unit control means. An error is displayed on the display unit 9 by 20. Then, in the list data recorded in the list recording means 22, the system controller 16
The MP3 file recorded next to the disappeared MP3 file is read from the PC card 40. And in sequence,
Playback is resumed. The MP in this PC card 40
The state in which the three files have disappeared represents a state in which the PC card 40, the contents of which have been rewritten, is remounted during steps S8 and S9.

[Effects of First Embodiment] In the reproduction control of the audio apparatus 1 according to the first embodiment described above, the system controller 16 reads the unique identification information of the PC card 40 via the reading unit 5. Then, the read unique identification information is recorded in the identification information recording means 23. Here, the recording medium identification means 19 reads the read unique identification information and the unique identification information recorded in the identification information recording means 23. The PC card 40 installed in the card type adapter 10 and the card type adapter 10
It is possible to identify whether or not it is the same as the PC card attached to the.

When the recording medium identification means 19 determines that the PC card 40 mounted on the card type adapter 10 and the PC card previously mounted on the card type adapter 10 are the same. The system controller 16 reads the list data recorded in the list recording means 22.

Specifically, while the MP3 files in the PC card 40 are sequentially reproduced, the power of the card type adapter 10 is switched by the operation of the user or by some reason. Then, by the recording medium identification means 19,
PC card 40 mounted on the card type adapter 10
If it is determined that the PC card and the PC card previously attached to the card type adapter 10 are the same, the system controller 16 sequentially, based on the list data, from the MP3 file whose reproduction is interrupted when the power is switched. , Can be played.

Therefore, the user can continuously listen to the MP3 file before and after switching the power without operating the operation unit 2 of the audio apparatus 1.

[Second Embodiment] Next, a second embodiment of the present invention will be described. In the following description, the same structures and the same members as those in the first embodiment will be designated by the same reference numerals, and detailed description thereof will be omitted or simplified.

In the first embodiment, the card type adapter 10 is used.
When the power is turned off and the power is turned on again, the recording medium identification means 19 determines the identification of the PC card 40 attached to the card type adapter 10. When it is determined that the PC card 40 is the same as the PC card previously mounted on the card type adapter 10, the system controller 16 reads the list data recorded in the list recording means 22. After that, the MP3 files that were being reproduced immediately before the power was turned off were sequentially reproduced.

On the other hand, in the second embodiment, when the MP3 files in the PC card 40 are sequentially reproduced, the reproduction information of the MP3 files is recorded. Also,
After the power supply is switched, when the recording medium identification means 19 determines that the card is the same as the PC card previously mounted in the card type adapter 10, the system controller 1
Reference numeral 6 reads the recorded reproduction information and the list data recorded in the list recording means 22. The difference is that MP3 files whose reproduction is interrupted when the power is switched are configured to be sequentially reproduced from the interrupted position.

FIG. 5 is a diagram showing the structure of the audio control unit 6 according to the second embodiment. The system controller 16 reproduces the reproduction information (identification name (folder name, file name), reproduction time (minutes, minutes,
Read second)). The reading of the reproduction information is performed once per second. Then, the read reproduction information of the MP3 file is recorded in the storage unit 17.

The storage unit 17 has been described in the first embodiment.
In addition to the list recording means 22 and the identification information recording means 23, a reproduction information recording means 24 is provided.

The reproduction information recording means 24 is composed of a rewritable SRAM or the like, and records the reproduction information of the MP3 file read by the system controller 16.
Although not specifically shown, the reproduction information recording means 24 includes a reproduction information table divided into a disc title (folder name), a track title (file name), and a reproduction time (minutes, seconds). . Then, the reproduction information is recorded in association with each section of the reproduction information table. The reproduction time is the time from the start of reproduction of the MP3 file in minutes and seconds.

Next, the reproduction control of the PC card 40 and the PC card 40 in the audio apparatus 1 described above will be described with reference to the flowcharts shown in FIGS.

From here, as in the first embodiment, the user turns on the power of the card-type adapter 10 to make the data in the PC card 40 readable by the audio device 1, and then the PC. The card 40 is attached to the card type adapter 10 (step S1).

In step S1, when the PC card 40 is installed, the interface section 11 causes the PC card 4
The mounting state of 0 is detected (step S2). Then, after step S2, in steps S3 to S5, the list data of the PC card 40, the unique identification information of the PC card 40, and the read list data and the unique identification information are recorded.

After step S5, the system controller 16 reads the list data of the list recording means 22. Then, the system controller 16 causes the M in the PC card 40 corresponding to the first music recorded in the list data to be recorded.
Read and play the P3 file (step S
6).

Here, in step S6, in parallel with the reproduction of the MP3 file of the first music, the system controller 16 reads the reproduction information regarding the MP3 file of the first music (step S6A).

In step S6A, the read reproduction information is recorded in the reproduction information table of the reproduction information recording means 24 (step S6B).

The system controller 16 uses the first song M
When the reproduction of the P3 file is completed, the list recording means 22
The list data of is read again. Then, according to the read list data, a PC corresponding to the second song
The MP3 file in the card 40 is read and reproduction processing is performed (step S7).

In step S7, the reproduction information is read (step S6), as in steps S6A and S6B.
7A), recording the read reproduction information (step S7)
B) is performed. That is, in reproduction of each MP3 file, reproduction information is read and reproduction information is recorded. The reproduction information of the newly reproduced MP3 file is sequentially updated in this reproduction information table.

In step S7, the user turns off the power of the card type adapter 10 while the MP3 file of the second music piece in the PC card 40 is being reproduced (step S8).

In step S8, when the power of the card type adapter 10 is turned off, the reproduction information regarding the second MP3 file is recorded in the reproduction information recording means 24 until just before the power of the card type adapter 10 is turned off. It

At step S8, the power of the card type adapter 10 is turned off, and then the power of the card type adapter 10 is turned on again (step S9).

In step S9, when the power of the card type adapter 10 is turned on, the interface section 11 detects again the mounting state of the PC card 40 in the card type adapter 10 (step S10).

In step S10, the PC card 40
If the wearing state of the device is not detected, the audio device 1
Ends the reproduction of the PC card 40.

In addition, in step S10, when the mounting state of the PC card 40 is detected, the system controller 16 causes the PC card 4 to be detected as in the first embodiment.
The unique identification information in 0 is read (step S11). Then, the identification of the PC card 40 by the recording medium identifying means 19 is determined (step S12).

In step S12, when the recording medium identification means 19 determines that the PC card 40 attached to the card type adapter 10 and the PC card previously attached to the card type adapter 10 are not the same. Is the same as that of the first embodiment, and the description thereof is omitted.

In step S12, when the recording medium identification means 19 determines that the PC card 40 attached to the card type adapter 10 and the PC card previously attached to the card type adapter 10 are the same. The system controller 16 includes the reproduction information recording means 2
The reproduction information recorded in the reproduction data table 4 and the list data recorded in the list recording means 22 are read (step S14).

Then, the system controller 16 reads the MP3 file in the PC card 40 corresponding to the second music according to the list data. Further, based on the reproduction time (time from the reproduction start position of the MP3 file to the power OFF of the card type adapter 10) in the reproduction information, in step S8, the reproduction is stopped from the position where the reproduction is interrupted.
Play the MP3 file of the song.

[Effect of Second Embodiment] In the reproduction control in the audio device 1 of the second embodiment described above, MP3
In parallel with file reproduction, the system controller 16
Reads the playback information about the MP3 file being played. Further, the read reproduction information is recorded in the reproduction information table of the reproduction information recording means 24. And
When the recording medium identification means 19 determines that the PC card 40 is the same as the PC card previously mounted in the card type adapter 10 after the power supply of the card type adapter 10 is switched, the system controller 16 Read the reproduction information recorded in the reproduction information table and the list data recorded in the list recording means.

Specifically, while the MP3 files in the PC card 40 are sequentially reproduced, the power source of the card type adapter 10 is switched by the operation of the user or by some reason. Then, by the recording medium identification means 19,
When it is determined that the PC card 40 is the same as the PC card previously mounted on the card-type adapter 10, the system controller 16 reproduces the data at the time of power switching based on the list data and the reproduction information table. MP3 file, and from the position where the playback is interrupted,
Playback can be performed sequentially.

Further, the reproduction information recording means 24 has the reproduction information (identification name, reproduction time (minutes, minutes,
Seconds)).

Therefore, even if the power supply of the card type adapter 10 is switched at an unpredictable timing, the reproduction information before the power supply switching can be accurately recorded.

That is, the system controller 16
After the power source is switched, based on the list data recorded in the list recording means 22 and the reproduction information recorded in the reproduction information recording means 24, the reproduction is continued from the position substantially the same as the interruption time (minutes, seconds). It can be performed.

[Modification of Embodiments] The present invention has been described above with reference to the preferred embodiments. However, the present invention is not limited to these embodiments and does not depart from the gist of the present invention. Various improvements and design changes are possible.

That is, as the identification information, the information assigned by the producer to each product (serial number), the information containing the character string representing the producer and the character string representing the model of the producer (model number), etc. are adopted. However, any other information can be used as long as it is unique information for identifying the information recording medium. Further, as the identification information, not only the electronic file but also the physical shape of the information recording medium itself can be adopted. That is, the reading unit is not limited to the interface unit for inputting electronic data, and may be configured to mechanically read the physical shape of the information recording medium itself.

For example, in each of the above-described embodiments, the audio device 1 is adopted as the reproducing device of the information storage device, but the present invention is not limited to this, and it may be configured as an on-vehicle audio device or an on-vehicle navigation device.

Specifically, when the engine of the vehicle is turned off while the music data in the PC card is being reproduced, the power supply of the vehicle-mounted audio device or the vehicle-mounted navigation device is turned off accordingly. Here, if the engine of the vehicle is turned on again without removing the attached PC card, the power of the vehicle-mounted audio device or the vehicle-mounted navigation device is similarly turned on.

Here, the PC mounted on the card type adapter before and after the power supply is switched by the recording medium identification means of the vehicle-mounted audio device or the vehicle-mounted navigation device.
It is determined that the cards are the same. Then, after the power is turned on, the MP3 files that have been interrupted when the power is turned off can be sequentially played.

In each of the above embodiments, the PC card is used as the information storage device, but the present invention is not limited to this, and any other information storage device such as an IC card or a magnetic card may be adopted. In this case, a card type adapter that converts into a predetermined data input / output format such as a shape, a storage capacity, an electrical characteristic, a magnetic characteristic, etc. corresponding to each information storage device may be used.

In each of the above embodiments, MP3 is used as data.
Although an audio device has been described as a reproduction device of this MP3 file using a file, it is not limited to this. It is possible to use a reproducing apparatus for reproducing any data such as reproducing a video file and displaying a video by using a video file compressed by MPEG-1, MPEG-2 or the like as data.

In each of the above embodiments, the music data is MP
Although the file compressed by the three methods has been described, the present invention is not limited to this. As a compression method, ATRAC (Adaptive Trans
formAcoustic Coding3), AAC (Advanced Audio Cod)
ing), WMA (Windows Media Audio (product name))
Etc., or other compression methods may be supported. Furthermore, it is possible to use data that has not been compressed.

[0135]

According to the present invention, when the information recording medium is mounted, it is possible to identify whether or not the previously mounted information recording medium is the same as the mounted information recording medium. You can

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an audio device as a reproducing device in the first embodiment.

FIG. 2 is a diagram showing a structure of data in a PC card as an information recording medium in each of the embodiments.

FIG. 3 is a diagram showing a configuration of list data stored in list information storage means in the PC card in each of the embodiments.

FIG. 4 is a flowchart showing reproduction control of the PC card in the first embodiment.

FIG. 5 is a diagram showing a schematic configuration of an audio device in the second embodiment.

FIG. 6 is a flowchart showing reproduction control of a PC card according to the second embodiment.

FIG. 7 is a flowchart showing reproduction control of an information recording medium by a conventional reproduction device.

[Explanation of symbols]

1 Audio device as playback device 5 Reading unit as reading means 40 PC card as information recording medium 10 Card-type adapter as mounting means 18 Reproduction means 19 recording medium identification means 22 List recording means 23 Identification Information Recording Means 24 Playback information recording means

Claims (9)

[Claims] 1. A mounting means for removably mounting an information recording medium for recording identification information specific to the information recording medium, and a unique recording medium recorded on the information recording medium mounted on the mounting means. Reading means for reading identification information, identification information storage means for storing identification information unique to the information recording medium read by the reading means, identification information unique for the information recording medium read by the reading means, and the identification The identification information unique to the information recording medium stored in the information storage means is collated, and whether the information recording medium mounted on the mounting means is the same as the information recording medium mounted before the mounting means. A recording medium identifying device comprising: a recording medium identifying means for identifying the. 2. Identification information peculiar to the information recording medium is recorded to recognize the attachment of the removable information recording medium, and the identification information peculiar to the information recording medium of the information recording medium whose attachment is recognized is read. The read identification information peculiar to the information recording medium is stored, the read identification information peculiar to the information recording medium and the stored identification information peculiar to the information recording medium are collated, and the information recording medium is A recording medium identification method characterized by identifying whether or not it is the same as the mounted information recording medium. 3. An information recording medium on which data, list data for listing the data, and identification information unique to the information recording medium are recorded are detachably mounted.
The recording medium identification device according to claim 1, a list storage unit that stores the list data, and a reproduction unit that reproduces the data according to the list data stored by the list storage unit. Playback device. 4. Mounting means for detachably mounting data, list data for listing the data, and information recording medium for recording identification information specific to the information recording medium, and the information recording mounted on the mounting means. Reading means for reading data recorded on the medium, list data, and identification information unique to the information recording medium, identification information storage means for storing the identification information unique to the information recording medium read by the reading means, and the reading means And a list storage unit for storing the list data read by the collating the identification information peculiar to the information recording medium read by the reading unit and the identification information peculiar to the information recording medium stored in the identification information storage unit. The information recording medium mounted on the mounting means before the information recording medium mounted on the mounting means And a recording medium identification means for determining whether or not the information recording medium mounted on the mounting means by the recording medium identification means is the same as the information recording medium previously mounted on the mounting means. And a reproduction unit that reproduces the data based on the list data stored in the list storage unit. 5. The reproducing apparatus according to claim 3, further comprising a reproduction information recording unit for recording reproduction information regarding data reproduced by the reproducing unit, wherein the reproducing unit is mounted by a recording medium identification device. When it is identified that the information recording medium mounted in the means is the same as the information recording medium previously mounted, based on the list data stored in the list storage means and the reproduction information recorded in the reproduction information recording means. A reproducing apparatus characterized in that the reproduction processing is performed on the data. 6. The recording medium reproducing apparatus according to claim 4 or 5, wherein the reading means is the information recording medium previously mounted on the information recording medium mounted on the mounting means by the recording medium identifying means. A reproducing apparatus, which starts reading the list data of the mounted information recording medium when it is determined that they are not the same. 7. An information recording medium in which data, list data for listing the data, and identification information unique to the information recording medium are recorded to recognize attachment of a removable information recording medium, and the attachment is recognized. Reading the list data and the identification information unique to the information recording medium, storing the read list data and the identification information unique to the information recording medium, the read identification information and the stored unique identification of the information recording medium By collating with information, it is identified whether the information recording medium is the same as the previously installed information recording medium, and the identified information recording medium is the same as the previously installed information recording medium. If it is recognized that the data is reproduced, the data is reproduced based on the stored list data. 8. A reproducing program for causing a computer to execute the reproducing method according to claim 7. 9. A recording medium on which the reproduction program according to claim 8 is recorded so that it can be read by a computer.