JP3327897B2 - Semiconductor memory card and reproducing apparatus therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor memory card for recording digital data representing audio and video , and
It relates to the playback device .

[0002]

2. Description of the Related Art As a rewritable recording medium for recording digital data, an MD (Mini Disc) has been widely used. Also, portable MD recording / reproducing devices for recording audio information for over a dozen tunes recorded on music CDs on MDs are widely used. A typical MD has a recording capacity of about 140 MB, and can record about 74 minutes of music by recording compressed digital audio data. Further, the MD can record information indicating a song name, a disc name, and the like together with audio information at a maximum of about 1700 characters. Character information is often recorded by combining single-byte katakana, English characters, numbers, and symbols. Also,
Recently, an MD recording / reproducing apparatus that supports hiragana and kanji is also commercially available. (Katakana notation on a computer includes half-width katakana and full-width katakana. Half-width katakana is represented by a one-byte character code.
/ 2 is displayed. Full-width katakana is represented by a 2-byte character code. )

[0003]

However, according to the prior art, a recording medium that records hiragana and kanji such as a song title can display only katakana, English characters, numbers, and symbols (no kanji font is provided). When mounted on another playback device, there is a problem that the title of the music or the like cannot be displayed correctly.

It is an object of the present invention to provide a semiconductor memory card for properly displaying character information, whether it is a recording / reproducing apparatus for displaying hiragana and kanji, or a recording / reproducing apparatus for displaying only half-width katakana alphanumeric characters , and a reproducing apparatus therefor. Aim.

[0005]

In order to solve the above-mentioned problems, a semiconductor memory card according to the present invention comprises audio information and
Synchronous playback (1) Text information is one-byte characters
(2) Text information consists of only 2 bytes
(3) Text information consisting of only character code strings
Character string and 2-byte character code string.
Text information of any of the three storage types
Semiconductor memory card that is stored in association with a report,
The text information is stored in a fixed-size text storage area.
The one-byte character code string to be stored and / or before
A two-byte character code string and the one-byte character code string
And a two-byte character code string
And the one-byte character
Code string, the 1-byte first termination code, the 2-byte
G character code sequence, the order of the two-byte second termination code
It is characterized by being arranged in .

Here, the semiconductor memory card has a first attribute indicating whether the text information includes a one-byte character code string, and a second attribute indicating whether the text information includes the two-byte character code string. An attribute may be stored, and a combination of the first attribute and the second attribute may indicate the storage type including the above (1) to (3) .

Further, the one-byte character code string is delimited by a first indicator indicating the type of the item, and the two-byte character code string is separated by a second indicator indicating the type of the item .
They may be separated .

[0008] The reproducing apparatus of the present invention provides audio information from a semiconductor memory card and text information reproduced synchronously therewith.
A reading means for reading the read voice information, a reproducing means for reproducing the read audio information, and a display means for displaying either the read one- byte character code string or the read two-byte character code string.
And the reproducing means itself is at least (a) a one-byte sentence.
Only character code strings can be displayed, (b) 2-byte character code
Only columns can be displayed, (c) 1-byte character code string and
One of three types that can display 2-byte character code strings
Display type information holding means for holding display type information
And according to the content of the text information to be read out,
Which of the storage types (1) to (3) is to be determined.
Storage type discriminating means, and the display type information and
The text information according to the storage type determined.
The 1-byte character code string or the 2-byte character
Control means for displaying the code string on the display means .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <Outline of the Present Invention> FIG. 1 is an explanatory diagram showing an outline of a semiconductor memory card (hereinafter, referred to as a media card), a recording apparatus, and a reproducing apparatus according to the present invention. In FIG. 1, a media card 1 is detachably attached to a recording / reproducing device 2, reproducing devices 3 to 5, a recording / reproducing device 6, and the like, and records a plurality of audio information and a plurality of character information. Here, the audio information corresponds to, for example, one song of music, one passage of a novel, one lesson of English conversation, and the like. The character information corresponds to voice information, and includes first data consisting of a one-byte character code string representing an attribute including the name of the voice information, and a second data consisting of a two-byte character code string representing the same attribute as the first data. And data. The first data represents a one-byte character code string, that is, a character string using half-width alphanumeric characters, half-width kana, and the like.
The data represents a two-byte character code string, that is, a character string in double-byte kana, kanji, another language, or the like. Thus, character information can be displayed by a reproducing apparatus that can only display one-byte character codes or a reproducing apparatus that can display two-byte character codes.

The recording / reproducing apparatus 2 is a personal computer, has a slot for mounting the media card 1, and is used as a recording / reproducing apparatus for the inserted media card 1. For example, the recording / reproducing apparatus 2 obtains audio information and character information distributed from a music provider 7 via a telephone line, the Internet, or the like, or generates audio information based on a music CD, and generates character information by a user operation. Then, the audio information and the character information are written to the media card 1 inserted in the slot, and the audio information and the character information are read from the media card 1 for reproduction and editing.

The playback device 3 is a portable playback device having a slot for mounting the media card 1, the playback device 4 is also a desktop type playback device, and the playback device 5 is also a vehicle-mounted playback device. The voice information is read out from 1 and reproduced, and the character information is read out and displayed. Each of the reproducing devices 3 to 5 reads out and displays the first data of the character information when the font ROM of the one-byte character code is built in, and displays the second data when the font of the two-byte character code is built in. Is read out and displayed.

The recording / reproducing device 6 is a portable recording / reproducing device that records voice information and character information in addition to the functions of the reproducing device 3. The music provider 7 distributes voice information and text information via the Internet or a telephone line. <Semiconductor Memory Card> FIG. 2 is a diagram showing an appearance of the media card 1. As shown in FIG. As shown in FIG.
It has a length of about 32 mm, a width of about 24 mm, and a thickness of about 2.1 mm, has a built-in nonvolatile semiconductor memory element such as a flash memory, and has a terminal group that is electrically connected to a reproducing apparatus or a recording apparatus when mounted.

Hereinafter, the media card 1 will be described in order of three layers, a physical layer, a file system layer, and an application layer, as shown in FIG. <Physical Layer> FIG. 3 is a block diagram showing the configuration of the media card 1. As shown in the figure, the media card 1 includes a control IC 302, a flash memory 303, a ROM
304 is built in.

The control IC 302 controls the flash memory 30 according to a write command or a read command input from a recording device or a reproducing device through a group of terminals.
3, writing and reading of voice information and character information, ROM
For example, reading from the memory 304 is performed. At this time, if encryption is specified by the command, the control IC
Reference numeral 302 also performs encryption of audio information at the time of writing, and decrypts encrypted audio information at the time of reading. In this manner, the media card 1 can also prevent unauthorized copying of data by encrypting and storing data requiring copyright protection.

The flash memory 303 has a sector structure, and each sector stores 512 bytes of digital data. For example, in the case of a 64 MB type media card, the memory capacity is 67188854 (= 64 * 1024 * 1024) bytes, and the number of sectors is 131072 (= 67188854/512). However, if a certain number of alternative sectors are reserved in advance in anticipation of the occurrence of defective sectors, for example, assuming that the effective memory capacity excluding the alternative sectors is 65,536,000 bytes,
The number of valid sectors is 128,000.

The ROM 304 stores read-only data unique to the media card 1. <Recording Area of Physical Layer> FIG. 5 is a diagram showing a configuration of a recording area of the media card 1. As shown in the figure, the recording area of the media card 1 is divided into three areas: a special area, an authentication area, and a user area. The special area is ROM3
The authentication area and the user area are areas in the flash memory 303. The special area and the authentication area are used for copyright protection.

The special area is a read-only area in which a media ID, a maker name, and the like having a unique value for each media card 1 are stored. The authentication area is an area that is readable and writable only when mutual authentication with the recording device or the playback device in which the media card 1 is mounted is successful, and stores a key necessary for encryption / decryption of audio information. Is done. This key is
It is generated from a media ID, a random number, and the like.

The user area is a readable and writable area irrespective of the success or failure of mutual authentication, and stores voice information and character information. Data requiring copyright protection is stored in a user area after being encrypted using a key. <File System Layer> The file system of the media card 1 uses a FAT (File Allocation Table) file system (ISO / IEC 9293), and the type of the file system may be either FAT12 or FAT16. FA
The authentication area and the user area of the media card are formatted as the T file system.

As shown in the authentication area and the user area in FIG. 5, the file system includes a partition boot sector, a file allocation table, a root directory entry, and a data area. The authentication area and the user area have the same configuration. The partition boot sector is a sector that is read when the system starts.

The file allocation table includes a FAT12 file system of 12-bit FAT and a 16-bit FA.
Any of the two types of T FAT16 file systems may be used, and the FAT structure conforms to ISO / IEC 9293. The root directory entry is information indicating what files exist in the root directory. For example, the root directory entry includes the file name of the file existing in the root directory, the file attribute, the update time and date of the file, and the first cluster number of the file in which the head of the file is stored.

In the data area, various files are recorded. A voice information file is recorded in the data area in the user area, and a key file is recorded in the data area in the authentication area when the voice information is encrypted. <Application Layer> The application layer is divided into presentation data and navigation data as shown in FIG.

The presentation data is composed of a plurality of audio information, that is, a group of audio objects (hereinafter abbreviated as AOB). Here, AOB is compressed audio data of audio digital data, for example, MPEG2-AAC [Low
Complexity Profile]. For MPEG2-AAC, I
SO / IEC 13818-7: 1997 (E) Information technology -Gen
eric coding of moving pictures and associated audi
o information-Part7 Advanced Audio Coding (AAC)
The description is omitted here. In the present embodiment, one AOB is assumed to have a playback time corresponding to a fixed time (about 8.5 minutes) for convenience of playback management. One piece of audio information may be composed of one AOB or a plurality of AOBs depending on the length of the reproduction time. AOB
For example, as shown in FIG. 6A, the group is stored in a directory called SD_AUDIO under a root directory in a user area, for example, AOB001. SA1-AO
B008. It is stored under the file name SA1. In this example, eight AOBs are recorded. However, the present invention is not limited to this, and a maximum of 999 AOBs can be recorded. If the AOB is encrypted,
As shown in (B), the key information is, for example, AO in the authentication area.
BSA1. It is stored under the file name KEY.

The navigation data section is composed of management data called a playlist manager and management data called a track manager. The playlist manager includes one or more playlists that specify a reproduction order of a plurality of pieces of audio information. The playlist includes a default playlist indicating the same playback order as the recording order of the audio information of all the audio information recorded on the media card 1, and a playlist created by a user operation and indicating an arbitrary reproduction order. is there. The playlist manager is, for example, as shown in FIG.
(A), SD_AUDIO. It is stored in the user area with a file name of PLM.

The track manager is information for managing audio information (that is, AOB) and includes, for example, audio attribute information (bit rate, sampling frequency,
Channel information) and character information related to audio information (hereinafter, such information is referred to as track information). The term track shall refer to one piece of audio information. More specifically, the track manager is a group of track information corresponding to AOBs stored in the user area on a one-to-one basis.

When one track is composed of one AOB, the track information corresponding to the AOB includes character information corresponding to the track and information related to the AOB.
When one track includes a plurality of AOBs, of the plurality of track information corresponding to the plurality of AOBs, the track information corresponding to the first AOB includes character information corresponding to the track and information regarding the AOB. , The track information corresponding to the second and subsequent AOBs includes information on the AOBs. The track manager, for example, as shown in FIG. It is stored in the user area under the file name TKM.

FIG. 7 shows a default playlist (DPLI in the figure), a track manager (TKMG in the figure),
It is explanatory drawing which showed the relationship of AOB group. In the figure, AO
B001.SA1, AOB002.SA1, AOB003.SA1, and AOB008.SA1 each have one AOB and one track (each Song
A, B, C, E). Also, AOB004.SA1, AOB0
05.SA1, AOB006.SA1, AOB007.SA1 are 1 in 4 AOBs
One track (SongD).

The track manager includes track information (TKI in the figure) corresponding to AOB on a one-to-one basis. Each track information includes a serial number (hereinafter, referred to as a track information number) uniquely assigned to each track information in the semiconductor memory card, and a link pointer indicating a subsequent TKI when the corresponding AOB is a part of a plurality of tracks. ,
It includes the character information composed of the first data and the second data already described. In the figure, the track manager is AOB0
Track information TKI # 1 to TKI corresponding to 01.SA1 to AOB008.SA1
Including # 8. Of these, AOB004.SA1 to AOB007.SA1 represent one track by four AOBs, and are therefore sequentially associated by a link pointer.

The default play list indicates the reproduction order of the tracks (Song A, B, C, D, and E in the figure) by an array of track search pointers indicating track information. Each track search pointer includes a track information number uniquely assigned to track information, thereby pointing to one track information. In the figure, the default playlist includes eight track search pointers # 1 to # 8.
And track information numbers # 1 to # 8 are arranged in order. As a result, the default play list includes the TKI numbers # 1 to # 1 in the track search pointers # 1 to # 8.
SongA, B, C, D, and E are designated as the reproduction order by the arrangement order of # 8.

Note that among the track search pointers # 4 to # 7 corresponding to SongD, # 5 to # 7 are track information #
4 to # 7 are linked by the link pointer, so that the track information number may not be included,
It may be omitted. Although the default playlist has been described in the figure, other playlists arbitrarily generated by a user operation have the same data structure as the default playlist. Since the playlist is an array of track search pointers including track numbers, it can be easily added, edited, and deleted. <Details of Track Manager> FIG. 8 is a diagram showing a detailed data structure of the track manager. As shown in the figure, a track manager (corresponding to a file called SD_AUDIO.TKM shown in FIG. 6) includes a plurality of pieces of track information t1 to t.
n (also referred to as TKI # 1 to #n).

Since each track information has the same data structure, the track information t2 will be described as a representative. In this embodiment, the track information t2 has a fixed length of 1024 bytes, and the track general information (also referred to as TKGI) of 256 bytes t21 and the character information (TK of 256 bytes)
TXTI_DA) t22, a 512-byte track time search table (TKTMSRT) t23. The reason why the track information has a fixed length of 1024 bytes is that the track information is stored in two sectors and the time search table in the track information is stored in one sector. This makes it possible to read and write track information by accessing two adjacent sectors with respect to a sector which is the minimum unit of access, thereby achieving higher speed.

The track general information t21 includes a track information identifier (TKI_ID) t211 and a track information number (TKIN) t.
212, link pointer (TKI_LNK_PTR) t213, block attribute (TKI_BLK_ATR) t214, text 1 attribute (TKI_
TI1_ATR) t215, Text 2 attribute (TKI_TI2_ATR) t2
16 and the like. The track information identifier t211 is an identifier that is common to all track information and indicates that the track information is track information.

The track information number t212 is a number uniquely assigned to the track information as described above. For example, the track information number takes any value from 1 to 999. As described above, the link pointer t213 is a pointer (track information number) that points to subsequent track information when one track is composed of a plurality of AOBs. If one track does not consist of a plurality of AOBs, the link pointer t213 contains invalid data (for example, 0) other than the track information number. The block attribute t214 shows that the track consists of one AOB or consists of a plurality of AOBs. In this case, it indicates where it is located at the beginning, middle, or end. For example, when the value of the block attribute is “000 (binary number)”, it indicates that one AOB is track information corresponding to the AOB when one AOB constitutes one track. In "001", a plurality of AOBs are 1
When it corresponds to one track, it indicates that the track information corresponds to the first AOB. "010" indicates that when a plurality of AOBs correspond to a track, the information is track information corresponding to an intermediate AOB. "010" indicates that when a plurality of AOBs correspond to a track, the information is track information corresponding to an intermediate AOB.

The text 1 attribute t215 includes character information t2
2 indicates the type of character code system for the first data recordable in 2, that is, the 1-byte character code string. FIG.
A shows a specific example of the text 1 attribute. In the figure, the value “00h (hexadecimal)” of the text 1 attribute means that there is no one-byte character code string in the character information t22. The value “01h” of the text 1 attribute is ISO64
6, "02h" is JISX0201, "03h" is IS
This means that there is a one-byte character code string in the character code system specified in O8859-1. Here, the ISO 646 defines so-called ASCII characters, that is, alphanumeric characters and symbols. JISX0201 specifies half-width katakana in addition to ASCII characters, and ISO8859-1 specifies western European Latin characters in addition to ASCII characters.

The text 2 attribute t216 includes character information t2
2 indicates the type of character code system for the second data recordable in 2, that is, the 2-byte character code string. FIG.
B shows a specific example of the text 2 attribute. In the figure, the value “00h” of the text 2 attribute means that there is no 2-byte character code string in the character information t22. "81
"h" means that the character code system is defined in "Music Shift JIS KANJI ((Record) Japan Records Association)".

The character information t22 is composed of first data and second data. The track time search table is used for fast-forward playback, fast-reverse playback, and the like, and stores an AOB address information sequence at each playback time of about two seconds from the beginning to the end of the AOB. <Details of Character Information> FIG. 10 is an explanatory diagram showing a storage area of the character information (TKTXTI_DA) t22 shown in FIG.

The storage area of the character information t22 includes one sector (512 bytes) together with the 256-byte track general information t21.
A fixed-size area of 256 bytes provided in (byte). As shown in the upper part of the figure, this recording area includes a first data t221, a second data t222, a free area t223.
Consists of First data t221 and second data t222
Is a variable length, so if it is less than 256 bytes,
An empty area t223 is generated.

As shown in the lower part of the figure, the first data t221 is
A combination of a marker (called a tag) indicating the type of item and a 1-byte character code string indicating the content of the item that follows is arranged in order. At the end of the first data, a termination code "
00h "is added to the end of the second data, and" 0000h "is added as a termination code to the end of the second data.

As shown in the figure, the tag for the first data is a one-byte code. That is, the tag indicating the title name is “01h”. The tag indicating the artist name is “02h”. The tag indicating the album name is “03h”
It is. The tag indicating the lyricist is “04h”. The tag indicating the composer is “05h”. The tag indicating the arranger is “06h”. The tag indicating the producer is "07
h. The tag indicating the record company is "08h." The tag indicating the artist message is "09h."
It is. The tag indicating the comment of the user is “0Ah”. The tag indicating the comment of the provider is “0Bh”. The tag indicating the date is “0Ch”. The tag indicating the genre is “0Dh”. URL (Uniform Resourc
The tag indicating “e Locator” is “0Eh”. The tag indicating the free item (item that can be set by the user) 1 is “0Fh”
It is. The tag indicating the free item 2 is “10h”.
The tag indicating the free item 3 is “11h”. The tag indicating the free item 4 is “12h”. The tag indicating the free item 5 is “13h”. The tag indicating the free item 6 is “14h”.

The tag for the second data is a 2-byte code in which "00h" is added to the upper order of each tag for the first byte code. Thus, the character information (TKTXTI_DA) t
22 is a first byte representing the same contents in a one-byte character code.
Data and second data represented by a two-byte character code. As a result, a playback device that can display only one-byte character codes can display a half-width character character string using one-byte character codes according to the first data. In addition, a playback device that can display a 2-byte character code can display a character string containing alphanumeric and kanji characters using the 2-byte character code according to the second data. <Structure of Reproducing Apparatus> FIG. 12 shows the reproducing apparatus 3 shown in FIG.
FIG. 3 is a block diagram showing the configuration of FIG. The playback device 3 includes a font ROM 120, a microcomputer (hereinafter abbreviated as a microcomputer) 121, a memory 122, an LCD unit 124, an operation unit 125, a card interface unit 128, a descrambling unit 129, a decoder 130, and a D / A converter 13.
1 is provided.

The font ROM 120 has the following three types depending on the type of the reproducing apparatus. That is, a first type that stores only font data corresponding to a one-byte character code, a second type that stores only font data corresponding to a two-byte character code,
There is a third type that stores font data corresponding to both byte character codes. Font data corresponding to one-byte character codes is ISO646, JISX
0201 and at least one of the character encoding systems specified in ISO8859-1. The font data corresponding to the two-byte character code is based on, for example, a character code system defined in “Music Shift JIS KANJI”.

The microcomputer 121 has a built-in ROM and RAM, and executes a program in the ROM.
It controls the overall operation of the playback device, such as playback of audio information and display of character information on the LCD unit 124. A program for displaying character information performs different processing according to the type of the font ROM 120. That is, the microcomputer 121
When the font ROM 120 is of the first type, the first data (one-byte character code string) in the character information is read out, and the display on the LCD unit 124 is controlled based on the font data. In this case, the second data (two-byte character code string) in the character information is read out, and the display on the LCD unit 124 is controlled based on the font data. A display process is performed by selectively reading any of the second data.

The memory 122 is a work memory for temporarily storing audio information and character information read from the media card 1 when audio information is reproduced. As shown in the figure, the memory 122 stores the default playlist in the DP.
LI resident area, P that stores the playlist currently in use
LI storage area, T for storing track information currently in use
It includes a KI storage area, a FileKey storage area for storing an encryption key for decrypting audio information (AOB) being reproduced, a buffer area used as a work area (work area) and a buffer, and the like.

The LCD section 124 is a liquid crystal display panel and displays character information and the like. However, when the playback device is a portable type, the LCD unit 124 has, for example, 12 full-width characters × 1
The size of a line or a full-width 12 characters × 2 lines. In the case of an on-vehicle type, the size is about 24 full-width characters × a plurality of lines, or a size such as 320 × 240 pixels or 640 × 480 pixels.

The operation unit 125 has a reproduction key, a stop key, a pause key, a fast forward key, a fast rewind key, a volume key and the like, and accepts a user operation. Card interface unit 1
Reference numeral 28 denotes a slot in which the media card 1 can be attached and detached, and has a terminal group for electrically connecting the terminal group of the inserted media card 1.

The descrambler 129 is a descrambler for decoding audio information using an encryption key. That is, at the time of reproduction, the descrambler 129 receives encrypted audio information from the media card 1 and decrypts (descrambles) the audio information. Here, the encryption key is read from the authentication area of the media card 1 when the media card 1 and the playback device 3 can perform mutual authentication during playback.

The decoder 130 is provided for the descrambling unit 12.
9 and unencrypted audio information from the media card 1 via the memory 122, and expands the audio information into digital audio data. The D / A converter 131 converts digital audio information into an analog audio signal. <Operation of Reproducing Apparatus> Reproducing apparatus 3 configured as described above
The operation (1) will be described separately for (1) the case where the font ROM 120 is of the first type, (2) the case where the font ROM 120 is of the second type, and (3) the case where the font ROM 120 is of the third type. However, here, the media card 1 has SongA-SongE as shown in FIG.
, A default playlist, and a track manager. (1) In the case of the first type font ROM When the power of the reproducing apparatus 3 is turned on, the microcomputer 121 reads the default playlist from the media card 1 and stores it in the DPLI resident area of the memory 122, and further receives a reproduction instruction by a user operation. In this case, the track information # 1 is read from the media card 1 according to the track search pointer # 1 at the head of the default play list, and the memory 122
Is stored in the TKI resident area. Further, the microcomputer 121
Is the AOB corresponding to the track information # 1 (TKI # 1).
(AOB001.SA1) is sequentially transferred to the descrambling unit 129 or the decoder 130 via the memory 122. The transferred audio information is descrambled by a descrambling unit 129 (only when encrypted), a decoder 130, a D / A converter 13
1 are sequentially converted into analog audio signals.

At the same time that the transfer of the audio information is started, the microcomputer 121 sets the end code of the one-byte character code from the head in the character information of the track information stored in the memory 122.
(00h), the font data corresponding to the one-byte character code is read from the font ROM 120, and the font data is sequentially supplied to the LCD unit 124 so as to be displayed, for example, while being horizontally scrolled.

More specifically, FIG. 13 shows a display example during reproduction of audio information when the LCD section 124 provided in the portable reproduction apparatus has a size of about 24 half-width characters × 2 lines. However, the number of characters in one line depends on the type of character font (for example, whether it is a proportional font or a monospaced font)
Increases or decreases according to In the figure, the upper row of the display screen displays the elapsed playback time of the track being played, and the lower row scrolls the title name, artist name, and album name included in the 1-byte character code string horizontally. While being displayed repeatedly. Moreover, the title, artist, and album names have their own marks (★,
☆, ◆) are added, and a mark (⇒) indicating the delimiter is added.

FIG. 14 shows an example in which the LCD unit 124 displays one of the playlists in the portable reproducing apparatus. In the figure, a character string “playlist” indicating that the playlist is displayed is displayed on the upper line, and the lower line includes a one-byte character code string in all character information corresponding to the playlist. Are repeatedly displayed while sequentially scrolling the title names. Also in the figure, a mark (★) unique to the title name and a mark (⇒) indicating the delimiter are added.

The above-mentioned marks are stored in a memory in the microcomputer 121 in advance in a one-to-one correspondence with the respective items shown in FIG. 11, and the microcomputer 121 refers to the table and refers to FIG. 14 is controlled. FIG. 15 shows a display example during reproduction of audio information when the LCD unit 124 provided in the on-vehicle type reproducing apparatus has a size of about 48 half-width characters × 4 lines. In FIG.
In the line, items included in the one-byte character code string corresponding to the audio information being reproduced are repeatedly displayed while being sequentially horizontally scrolled. Also in this case, marks unique to the item (★, ☆, ○, ◎, Δ, □, Δ, Δ, Δ) and a mark indicating the delimiter (⇒) are added. (2) In the case of the font ROM of the second type In this case, the operation of reproducing the audio information is the same as that of the first type, so that the description is omitted.

The microcomputer 121 starts the transfer of the audio information, skips the character information of the track information stored in the memory 122 from the head to the end code (00h) of the one-byte character code, and reads the two-byte character code. The font data corresponding to the two-byte character code is read from the font ROM 120 until the end code (0000h) of the code is read, and the font data is sequentially supplied to the LCD unit 124 so as to be displayed, for example, while being horizontally scrolled.

More specifically, FIG. 16 shows a display example during reproduction of audio information when the LCD unit 124 has a size of 12 full-width characters × 2 lines provided in a portable reproducing apparatus. In the same figure, the upper row of the display screen displays the elapsed playback time of the track being played, and the lower row horizontally scrolls the title name, artist name, and album name included in the 2-byte character code string. While being displayed repeatedly. Moreover, titles, artist names, and album names have unique marks (★, ☆, ◆),
A mark (⇒) indicating the delimiter is added.

FIG. 17 shows an example in which the LCD unit 124 displays one of the playlists on the portable reproducing apparatus. In the same figure, a character string “playlist” indicating that a playlist is displayed is displayed on the upper line, and 2 characters in all character information corresponding to the playlist are displayed on the lower line.
The title names included in the byte character code string are repeatedly displayed while sequentially scrolling horizontally. Also in the figure, a mark (★) unique to the title name and a mark (⇒) indicating the delimiter are added.

A table in which the above-mentioned marks correspond to the items shown in FIG. 11 on a one-to-one basis is stored in the memory of the microcomputer 121, and the microcomputer 121 refers to the table and refers to FIG. 17 is controlled. Further, FIG. 18 shows a display example during reproduction of audio information when the LCD unit 124 has a size of 24 full-width characters × 4 lines provided in a vehicle-mounted reproducing apparatus. In the figure, on the fourth line of the display screen, items included in the 2-byte character code string corresponding to the audio information being reproduced are repeatedly displayed while being sequentially horizontally scrolled. Here, marks unique to the items (★, ☆, ○, ◎, Δ, □, Δ, Δ, #) and marks indicating the delimiters (⇒) are added. (3) Third-Type Font ROM In this case, either one-byte character display or two-byte character display is selected in advance by a user operation, and the microcomputer 121 stores a flag indicating the selection result. The microcomputer 121 operates in the same manner as in the first type when the flag indicates the one-byte character display, and operates in the same manner as in the second type when the flag indicates the two-byte character display. I do. <Detailed Flow of Display Processing> FIGS. 19 and 20 are flowcharts showing display processing in the playback device 3. In the figure, it is assumed that the playback device 3 has a third type of font ROM, and a case will be described in which display processing for realizing the display example shown in FIG. 15 or 18 is performed.

In FIG. 19, first, the microcomputer 121 in the reproducing apparatus 3 determines which of the following types (a) to (d) the character information (TKTXTI_DA) is (step 100). Here, type (a) is 1
Type (b) is that the character information contains a 2-byte character code string and does not include a 1-byte character code string, and type (c) is that the character information is 1 It includes both a byte character code string and a two-byte character code string, and type (d) means that character information does not include both a one-byte character code string and a two-byte character code string.

More specifically, the microcomputer 121 reads the text 1 attribute (TKI_TI1_ATR) and the text 2 attribute (TKI_TI2_ATR) shown in FIG. 8 and makes a determination according to the combination thereof based on the determination logic shown in FIG. That is, as shown in FIG. 21, the microcomputer 121 (1) determines that the value of the text 1 attribute is other than “00h” and that the text 2
If the value of the attribute is "00h", it is determined that the character information is of type (a), and (2) the value of the text 1 attribute is "00h" and the value of the text 2 attribute is "00h".
If it is other than "h", it is determined that the character information is of type (b), and (3) the value of the text 1 attribute is other than "00h" and the value of the text 2 attribute is other than "00h". In some cases, the character information is determined to be of type (c),
(4) If the value of the text 1 attribute is "00h" and the value of the text 2 attribute is "00h", it is determined that the character information is of type (d).

Further, the microcomputer 121 determines whether or not to display the one-byte character or two-byte character in accordance with the user's designation to display the two-byte character and the determined character information type. Then, the type of the display character to be used is determined (step 101). This determination is made according to the decision logic shown in FIG. That is, as shown in FIG. 22, the microcomputer 121 determines (1) to display a single-byte character when the user specification is a single-byte character and the character information is of the type (a) or (c). , (2) If the user specification is a one-byte character and the character information is of type (b) or (d), it is determined not to display (not display), and (3) the user specification is a two-byte character If the character information is of type (b) or (c), it is determined that double-byte characters are to be displayed. (4) If the user specifies a double-byte character and the character information is of type (a) Or in the case of (d), it is determined not to display (non-display).

Subsequent to this determination, the microcomputer 121 terminates the display processing when it is determined that the display is not to be performed (step 10).
2) If it is determined to be a one-byte character, the variable L = 1,
If it is determined that the character is a two-byte character, the variable L is set to L = 2 (steps 104 and 105). Here, the variable L is a variable indicating the number of bytes of data to be read from character information at one time. If it is determined that no display is to be performed, for example, “NO TITLE” may be displayed and then the process may be terminated.

Next, the microcomputer 121 specifies the tag (TAG_Xi: i = 1-n) corresponding to the item to be displayed in the character information, and sets the variable ADRS indicating the read address to the character information (TKTX
(TI_DA) as the start address of the storage area (Step 1)
06). The tag specified here is a tag indicating each item in the display example of FIG. 15 or FIG. 18, that is, TAG_Xi = 01h when L = 1, 02h to 14h, TAG_Xi = 0001h when L = 2, 0002h to 0014h are specified (i = 1h-14h).

Subsequently, the microcomputer 121 creates display data in the work area in the loop 1 processing (steps 108 to 118) as follows. The microcomputer 121 reads L bytes from the area indicated by the read address ADRS,
The read address is updated (ADRS = ADRS + L) (step 109), and it is checked whether or not the read L byte data matches the termination code (step 110) and whether or not the read L byte data matches the TAG_Xi (step 112). ). By repeating this, it is detected whether or not the TAG_Xi is recorded in the character information storage area, and the recording address when the TAG_Xi is recorded. If the read L-byte data matches the end code, the TAG_Xi and the item corresponding thereto are not recorded, so the microcomputer 121 resets the read address ADRS to the start address (step 111), and Move on to TAG_Xi processing.

If the read L-byte data matches the tag TAG_Xi, the item corresponding to the TAG_Xi is recorded, and the microcomputer 121 stores the mark corresponding to the item in the work area (step 113). . For example, the mark “★” corresponds to the title name indicated by the tag 01h or 0001h. Further, the microcomputer 121 continues until another tag or termination code is read (step 11).
5) Reading of L byte data and read address AD
The updating of the RS (step 114) and the storage in the work area (step 116) are repeated. As a result, the item indicated by TAG_Xi matched in step 112 is stored in the work area.

Next, the microcomputer 121 stores a mark (⇒) indicating a break in the work area (step 11).
7). This means that the display data for one TAG_Xi has been stored in the work area. Thereafter, the microcomputer 12
1 repeats the above processing in steps 109 to 117 for another TAG_Xi. After the processing of the loop 1 is completed, the microcomputer 121 controls the LCD unit 124 to scroll and display the display data created in the work area (step 119). As a result, the LCD unit 124 displays FIG.
= 1) or FIG. 18 (L = 2).

The type determination in step 100 may be performed by the microcomputer 121 based on the storage positions of the first and second termination codes 00h and 0000h. The storage positions of both the first and second termination codes are any of those shown in FIGS. FIG.
Is a flowchart showing a type determination process. In the figure, the microcomputer 121 searches the storage positions of the first and second termination codes (step 121) and sets the addresses indicating the storage positions to ADR_T1 and ADR_T2 (step 122). The microcomputer 121 determines whether or not ADR_T1 matches the start address of the character information storage area (step 123) and whether or not ADR_T1 and ADR_T2 are adjacent (steps 124 and 127). Is determined according to the type (a) to (d) (steps 125 to 130).

In FIGS. 19 and 20, it is assumed that the font ROM incorporated in the reproducing apparatus is of the third type. However, when the font ROM incorporated in the reproducing apparatus is of the first type, the font ROM shown in FIGS. In the flowchart, when L = 2 in the determination result of step 103, the same processing as non-display may be performed (the processing may be terminated if the processing proceeds to step 105). Also, the font ROM built into the playback device
Is the second type, the determination result of step 103 is L
When = 1, the same processing as non-display is performed (the processing is terminated when the processing proceeds to step 104).

According to the determination logic of the type of the display character in FIG. 22, when the user designation is a 2-byte character and the character information is of the type (a) or (d), it is determined not to display (non-display). However, when the character information is the type (a), a one-byte character may be displayed. Further, according to the determination logic of FIG. 22, when the user designation is a one-byte character and the character information is of type (b) or (d), it is determined not to display (not display). If the information is of type (b), two-byte characters may be displayed. In these cases, it is assumed that the font of the determined character type is stored in the font ROM. <Structure of Recording / Reproducing Apparatus> FIG. 25 is a block diagram showing the structure of the recording / reproducing apparatus 2. The recording / reproducing device 2 includes a communication interface unit 132, a memory 133, a hard disk 134, a display 135, a keyboard 136, a mouse 137, a CPU 138, and a card interface unit 13.
9, scramble section 140, compression / decompression section 141, A /
A D converter 142 and a D / A converter 143 are provided.

Communication interface 132, memory 13
3, the hardware configuration including the hard disk 134, the display 135, the keyboard 136, the mouse 137, and the CPU 138 is the same as the hardware of a general personal computer, and thus detailed description is omitted, and the configuration related to the media card 1 will be mainly described. . In the figure, a communication interface unit 132 is a communication circuit such as a modem or TA, and connects to the music provider 7 via a telephone line or the Internet.

The memory 133 downloads audio information and character information from the music provider 7 and stores the media card 1
The memory 133 stores various programs for writing and reading voice information and character information, playing the voice information loaded into the memory 133, and creating and editing voice information and character information. The hard disk 134 stores audio information and character information downloaded from the music provider 7 or newly created, and various programs as files.

The CPU 138 executes various programs in the memory 133 to download audio information and character information from the music provider 7,
Recording of audio information and character information on the media card 1, reproduction of audio information and character information of the media card 1, creation and editing of audio information and character information, and the like are controlled. Card interface unit 1
Reference numeral 39 denotes a PCMCIA to which the media card 1 can be attached and detached.
(Personal Computer Memory Card International Asso
ciation) a card slot in which a card is mounted.

The scrambler 140 is a scrambler and descrambler for encrypting and decrypting audio information using an encryption key. That is, the scramble unit 14
At the time of reproduction, encrypted audio information is input from the media card 1 or the hard disk 134 and decrypted (descrambled). Unencrypted audio information is input from the hard disk 134 or the compression / decompression unit 141, and the audio information is encrypted (scrambled). Here, the encryption key is read from the authentication area of the media card 1 when the media card 1 and the recording / reproducing device 2 can be mutually authenticated during reproduction, and is downloaded together with the audio information from the music provider during recording. Are written in the authentication area of the media card 1 when the mutual authentication is successful.

The compression / expansion unit 141 is an encoder and a decoder for compressing and expanding audio information. That is, the compression / decompression unit 141 performs the reproduction by the media card 1, the scramble unit 140, or the hard disk 134 during reproduction.
, Receives unencrypted audio information, decodes (decompresses) the audio information, outputs an audio signal via a D / A converter 143, and outputs an A / D converter 142 when creating new audio information. Or hard disk 13
4 receives uncompressed digital audio data (such as PCM data) and encodes (compresses) the audio data.

The operation of the recording / reproducing device 2 as the recording / reproducing device configured as described above will be described. Here, it is assumed that the music provider 7 is a distributor that distributes content including voice information and character information via a so-called WWW (World Wide Web) server on the Internet.

The recording / reproducing apparatus 2 performs downloading as follows. That is, the recording / reproducing apparatus 2 receives the AOB group distributed from the WWW server of the music provider 7 and stores the AOB group in the user area of the media card 1 in FIG.
The AOB group is stored as shown in FIG. If the AOB group is encrypted, the key information is further downloaded to the authentication area as shown in FIG. For example, the recording / reproducing apparatus 2 receives an AOB group and key information according to a distribution format defined for each music provider or distribution service, converts the received information into a format as shown in FIGS. You may make it.

If the music provider 7 provides character information at the time of downloading the AOB group, the character information is also downloaded, and the character information (TKTXTI_DA) in the track information corresponding to the AOB is stored in the user area. To be stored. When the character information is not provided by the music provider 7, the recording / reproducing apparatus 2 creates and edits the character information by a user operation and stores the character information in the user area.

For example, the recording / reproducing apparatus 2 displays a character information creation / edit window having an input field for each tag, and accepts a character input in an input field desired by the user. At this time, since the storage area of the character information (TKTXTI_DA) has a fixed length (256 bytes), the recording / reproducing apparatus 2 creates and edits the character information within a range not exceeding the fixed length, and stores the result in the fixed length area. Store.

In creating and editing character information,
The recording / reproducing apparatus 2 sets the tag type (1 byte or 2 bytes) and the first data according to whether the character string input by the user operation is a 1-byte character code or a 2-byte character code. Alternatively, it may be determined whether to use the second data. The reproducing operation of the recording / reproducing apparatus 2 is the same as that of the reproducing apparatus 3, and the description is omitted.

As described above, the media card 1 according to the present embodiment converts character information including the first data consisting of a one-byte character code string and the second data consisting of a two-byte character code string into audio information. Since the information is stored in association with each other, character information can be correctly displayed by a reproducing apparatus having a font of a one-byte character code or a reproducing apparatus having a font of a two-byte character code.

Further, the first data and the second data each include a combination of a tag indicating the type of an item and a character code string indicating the content of the item following the tag, so that the recording area of the character information can be efficiently stored. Can be used. further,
Since the recording area is set to the size within one sector (256 bytes) for each character information corresponding to the sound information, the character information is added, deleted,
Editing can be facilitated.

In the above-described embodiment, an example in which the recording / reproducing apparatus 2 mounts the media card 1 in the card slot has been described. However, the recording / reproducing apparatus 2 and the reproducing apparatus 3 having the media card 1 mounted thereon are so-called USB ( Universal Serial Bu
The recording / reproducing apparatus 2 may be configured to write the data to the media card 1 by connecting a cable as in s). In the second data, a two-byte character code string may include a mixture of three-byte character codes depending on the type of character code system.

Although the marks shown in FIGS. 16 to 18 use simple symbols for convenience in the above embodiment, they may be icons representing the types of items. (Summary) As described above, the semiconductor memory card of the present invention stores audio information, text information, and type information in association with each other, the recording device records these information on the semiconductor memory card, and the reproducing device stores the semiconductor information. The voice information is read out from the memory card and reproduced, and the text information is displayed according to the type information.

For example, a semiconductor memory card stores music data as audio information, and stores it as text information, such as a one-byte character code string or a two-byte character code string such as a song title and an artist name. The type information indicates whether the text information is a one-byte character code string or
Indicates whether it is a byte character code string or both. As a result, the playback device uses the font ROM inside the playback device.
Depending on the type (whether the font ROM supports single-byte characters or double-byte characters) and type information,
The text information is displayed according to the character type (1 byte character or 2 byte character) suitable for the playback device.

[0081]

Semiconductor memory card of the present invention, according to the present invention, the voice information
(1) Text information is 1
(2) Text information consisting only of byte character code strings
Consists of only 2-byte character code strings, (3) text
The information is a one-byte character code string and a two-byte character code
Text information of one of three storage types consisting of columns
Is a semiconductor memory card that stores audio data in association with audio information.
The text information is a fixed-size text record.
The one-byte character code string stored in the storage area and / or
Or the two-byte character code string and the one-byte character
A first termination code of a code string and the two-byte character
A second end code of the code string,
Character code string, the first termination code of the one byte, before
A two-byte character code string, and a second terminal code of the two bytes.
Are arranged in the order of C.

[0082] The reproduction apparatus of the present invention reproduces a reading means for reading the text <br/> preparative information to be reproduced in synchronization therewith and audio information from the semi-conductor memory cards, audio information read out reproducing means displays one of the 1-byte character code sequence or a 2-byte character code sequences read
The display means and the reproducing means itself are at least (a) one bar.
(B) 2-byte characters
Only code strings can be displayed, (c) 1-byte character code strings
And 3 types that can display 2-byte character code strings
Display type information that holds the display type information to be shifted
Holding means for responding to the contents of the text information to be read.
Any of the storage types (1) to (3).
Storage type determination means for determining whether the display type information
Information according to the information and the storage type determined.
The 1-byte character code string or the 2-byte
Control means for displaying a character code string on the display means .

[0083] According to this structure, the semiconductor memory card, the text information (1) - (3) it is possible also to record any type, even in reproducing devices that support single-byte character codes, 2-byte character code to support the
That in reproduction apparatus, it is possible to properly display by referring to the type information in reproducing apparatus which supports both 1-byte character codes and 2-byte character code. Furthermore, if the text information is of type (3), it can be correctly displayed on any playback device.

The semiconductor memory card stores the text
A second indicating whether or not the information includes the one-byte character code string;
1 The attribute information and the text information are
And second attribute information indicating whether or not the
May be. According to this configuration, the playback device can easily determine the type including (1) to (3) based on a combination of the first attribute and the second attribute read from the semiconductor memory card.

[0085]

[0086] The 1-byte character code sequence are separated by a first label indicating the type of item, the 2-byte character code sequence ward by a second indicator indicating a type of item
You may make it cut.

According to this configuration, the one-byte character code string and the two-byte character code each consist of a set of an indicator indicating the type of an item and a character code string indicating the content of the subsequent item. Can be used efficiently.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an outline of a semiconductor memory card, a recording device, and a reproducing device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an appearance of a semiconductor memory card (media card 1).

FIG. 3 is a block diagram showing a configuration of the media card 1.

FIG. 4 is an explanatory diagram showing an application layer of the media card 1.

FIG. 5 is a diagram showing a configuration of a recording area of the media card 1.

FIG. 6 is a diagram showing a configuration example of directories and files in an authentication area and a user area of the media card 1.

FIG. 7 is an explanatory diagram showing a relationship among a default playlist, a track manager, and an AOB group.

FIG. 8 is a diagram showing a detailed data structure of a track manager.

FIG. 9 shows a specific example of a text 1 attribute and a text 2 attribute.

FIG. 10 is an explanatory diagram showing a storage area for character information.

FIG. 11 is an explanatory diagram of a tag indicating a type of an item.

FIG. 12 is a block diagram illustrating a configuration of a playback device.

FIG. 13 is a diagram showing a display example during reproduction of audio information when the LCD unit provided in the portable reproduction apparatus has a size of about 24 half-width characters × 2 lines.

FIG. 14 is a diagram illustrating an example in which the LCD unit displays one of playlists in a portable playback device.

FIG. 15 is a diagram illustrating a display example during reproduction of audio information when an LCD unit provided in a vehicle-mounted reproduction device has a size of about 48 half-width characters × 4 lines.

FIG. 16 is a diagram illustrating a display example during reproduction of audio information when the display unit has a size of 12 characters (two-byte characters) × 2 lines.

FIG. 17 is a diagram illustrating a display example of a play list.

FIG. 18 is a diagram illustrating a display example during reproduction of audio information when the display unit has a size of 24 characters (two-byte characters) × 4 lines.

FIG. 19 is a flowchart (1) showing a display process in the playback device 3;

FIG. 20 is a flowchart (2) showing a display process in the playback device 3;

FIG. 21 is a diagram illustrating determination logic for determining the type of character information from a combination of a text 1 attribute and a text 2 attribute.

FIG. 22 is a diagram illustrating a determination logic for determining a type of a display character according to a user designation indicating a one-byte character or a two-byte character and a type.

FIG. 23 is an explanatory diagram showing storage positions of first and second termination codes.

FIG. 24 is a flowchart showing processing for determining the type of character information according to the storage positions of both the first and second termination codes.

FIG. 25 is a block diagram showing a configuration of the recording / reproducing device 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Media card 2 Recording / reproducing device 3-5 reproducing device 6 Recording / reproducing device 7 Music provider 120 Font ROM 121 Microcomputer 122 Memory 124 LCD unit 125 Operation unit 128 Card interface unit 129 Descramble unit 130 Decoder 131 D / A converter 132 Communication Interface unit 133 Memory 134 Hard disk 135 Display 136 Keyboard 137 Mouse 138 CPU 139 Card interface unit 140 Scramble unit 141 Expansion unit 142 A / D converter 143 D / A converter 302 Control IC 303 Flash memory 304 ROM

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI G06K 19/073 G06K 19/00 NG10L 19/00 P (72) Inventor Shinji Inoue 1006 Odakadoma, Kadoma City, Osaka Matsushita Electric Within Sangyo Co., Ltd. (72) Inventor Hideki Matsushima 1006 Kazuma Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd. (72) Inventor Masayuki Kozuka 1006 Okadoma Kadoma, Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. (56 References JP-A-11-31143 (JP, A) JP-A-11-232257 (JP, A) JP-A-10-254864 (JP, A) JP-A-10-79189 (JP, A) 8-292993 (JP, A) JP-A-8-166943 (JP, A) JP-A-6-251571 (JP, A) JP-A-5-197643 (JP, A) JP-A-2000-181916 (JP, A) JP-A-2000-101634 (JP, A) (58) ) Fields investigated (Int.Cl. ⁷ , DB name) G10K 15/02 G06F 12/00 520 G06K 7/00 G06K 17/00 G06K 19/07 G06K 19/073 G10L 19/00 G06F 17/21

Claims (7)

(57) [Claims] (1) Text information to be reproduced in synchronism with audio information (1) is composed of only one-byte character code strings.
That, (2) it because the text information is only 2-byte character code string
That, (3) the text information is 1 byte character code string and 2 bar
Text information of any one of the three storage types consisting of
A semiconductor memory card that stores the text information in association with the one byte stored in a fixed-size text storage area.
Character code string and / or the two-byte character code
A first end code of the one-byte character code string,
And from the second terminal code of the two-byte character code string
And the 1-byte character code string and the first
Code, the two-byte character code string, the second of the two bytes
Semiconductor memory car arranged in the order of termination code
De. 2. The method according to claim 1, wherein the one-byte character code string is a type of an item.
And the two-byte character code string is separated by a second indicator indicating an item indicator.
2. The semiconductor memory card according to claim 1, wherein the semiconductor memory card is separated by a sign.
Mode. 3. The method according to claim 1, wherein the text information is the one-byte character code.
First attribute information indicating whether or not a text string is included, and whether the text information includes the two-byte character code string.
The second attribute information indicating whether or not the information is stored.
The semiconductor memory card according to claim 2. 4. A reading means, a reproducing means, a displaying means, and a table.
Display type information holding means, storage type discriminating means, control means
And according to claims 1 to 3,
Audio information from a semiconductor memory card
A playback device that reads out and plays back text information to be played back
A location, said reading means, from said semiconductor memory card, re
Reading the voice information and the text information to be generated , the reproducing means reproduces the read voice information, and the display means reads the read one-byte character code.
Or the two-byte character code string, and the display type information holding means includes a small
At least one of the three types (a) to (c)
Shows holds type information, (a) 1-byte character code sequence can only view the, (b) only can display 2-byte character code sequence, (c) 1-byte character code sequence and a 2-byte character code
The column can be displayed. The storage type determination means is read out.
(1) to (3) according to the content of the text information
The control means determines the storage type of the display type information and the determined storage type .
The one bar of the text information is stored in accordance with the storage type.
Character code string or the 2-byte character code string
A playback device for displaying the information on the display means. 5. The semiconductor memory card according to claim 3,
Audio information and text information played in synchronization with
, And the storage type discriminating means reads the first attribute and the second
From two attributes, any of the storage types (1) to (3)
The playback device according to claim 4, wherein it is determined whether or not there is a playback device. 6. The control means, wherein the display type information is (a) and the storage type is
In the case of (1) or (3), the one-byte character code
A column is displayed on the display means, and the display type information is (b) and the storage type is
(2) or (3), the 2-byte character code
A column is displayed on the display means, and the display type information is (c) and the storage type is
In the case of (1), the 1-byte character code string is displayed
Means, and the display type information is (c) and the storage type is
In the case of (2), the 2-byte character code string is displayed.
Means, and the display type information is (c) and the storage type is
In the case of (3), the one-byte character code string or the
Displaying a two-byte character code string on the display means;
The playback device according to claim 4 or claim 5. 7. The method according to claim 1, wherein the display type information is (c) and
When the storage type is (3), the 2-byte character code
7. The reproduction according to claim 6, further comprising displaying a row of codes on the display unit.
apparatus.