JPH10116474A - Data storing medium, data writing device, data reproducing device therefor, and program storing medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently process plural kinds of data. SOLUTION: A data storing medium 1 adopts a constitution for continuously recording data on a track without sorting the data while recording an identifying symbol displaying the kind of data at the head of the data. A data writing device adopts the constitution for continuously writing data on a track of the storing medium 1 without sorting the data while recording the identifying symbol displaying the kind of data at the head of the data. A data reproducing device 3 continuously reads data out of the storing medium 1, at the time of reading out the identifying symbol, the device instructs the reproduction of data succeeding the identifying symbol to reproducing means designated by the identifying symbol.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data storage medium for recording data on a track, a data writing device for writing data on the data storage medium, and a data reproducing apparatus for reproducing data recorded on the data storage medium. DEVICE AND PROGRAM STORAGE MEDIUM STORING PROGRAM USED FOR IMPLEMENTATION OF THE DATA REPRODUCTION DEVICE The present invention relates to a program storage medium for storing a program used for realizing a playback device.

Recently, storage media such as CD-ROMs have been
A plurality of types of media data such as text data, audio data, moving image data, and still image data have been written. From now on, it has become necessary to construct a configuration that can efficiently process such recording and reproduction of multimedia data.

[0003]

2. Description of the Related Art Conventionally, when writing multimedia data such as text data, audio data, moving image data, and still image data to a storage medium such as a CD-ROM, the text data is text data, the audio data is audio data, For example, moving image data is recorded as moving image data, and still image data is recorded as still image data.

That is, in a storage medium such as a CD-ROM, data is stored using tracks as shown in FIG. 33, and therefore, as shown in FIG. Data is recorded on the second track, and only one type of media data is recorded on one track, such as moving image data, and recorded on each track in the TOC (file management area) prepared at the beginning. In this configuration, information such as the type of media data to be transmitted is managed.

[0005]

However, according to such prior art, when recording media data, the media data to be recorded is divided in advance, and the data is distributed to the corresponding tracks and recorded. There is a problem that control must be complicated.

[0006] Then, there is a problem that the writing control becomes difficult, so that the writing of the media data often fails. From now on, CD-ROM
When recording media data on a non-reusable storage medium such as the one described above, a large amount of storage medium to be discarded is created, which has been a serious pollution problem.

Further, according to such a conventional technique, when a plurality of media data are combined and reproduced,
Since media data is recorded separately for each media type, synchronization and timing must be created separately from media data, and software for linking them to media data must be prepared. There was a point.

Further, according to the conventional technique, when reproducing media data, when reproducing media data of a media type different from the media data currently being reproduced, the head is moved to another track. Since it has to be moved, there is a problem that overhead such as switching time is large.

The present invention has been made in view of the above circumstances, and has a new data storage medium / data writing device / data which enables efficient processing of a plurality of types of data such as multimedia data. Providing a playback device,
It is another object of the present invention to provide a new program storage medium for storing a program used for realizing the data reproducing apparatus.

[0010]

FIG. 1 shows the principle configuration of the present invention when multimedia data is to be processed.

In the drawing, reference numeral 1 denotes a multimedia data storage medium of the present invention, which records a plurality of types of media data on tracks, and 2 denotes a multimedia data writing apparatus of the present invention, Writing a plurality of types of media data on a multimedia data storage medium 1;
Is a multimedia data reproducing apparatus of the present invention, which reproduces a plurality of types of media data recorded on the multimedia data storage medium 1 of the present invention.

Multimedia data storage medium 1 of the present invention
Records an identification code 11 indicating the media type of the media data 10 at the head of the media data 10, preferably records a data length 12 of the media data 10, and more preferably, for example, At the end of the media data 10, while recording the pointer information 13 to the next media data set for each media type, the media data 10 is continuously recorded on a track without being divided.

The multimedia data writing device 2 of the present invention
Is a first generation unit 20-1 for generating audio data, a second generation unit 20-2 for generating moving image data, and so on.
Generating means 20 for generating media data to be written, comprising a plurality of means provided for each media type;
Generating means 21 for generating an identification code indicating the media type of the media data generated by the generating means 20; Setting means 22 for setting pointer information; detecting means 23 for detecting the data length of media data generated by generating means 20;
A writing unit 24 for writing the media data generated by the generation unit 20 to the multimedia data storage medium 1;

Here, the function of the multimedia data writing device 2 of the present invention is specifically realized by a program, and this program is provided from a medium and installed in the multimedia data writing device 2. Then, by operating on the memory, the present invention is realized.

[0015] Multimedia data reproducing apparatus 3 of the present invention
Is a first reproducing unit 30-1 for reproducing audio data, a second reproducing unit 30-2 for reproducing moving image data, and the like.
A reproducing means 30 for reproducing media data to be reproduced, comprising a plurality of means provided corresponding to media types;
Reading means 31 for reading data from the multimedia data storage medium 1, when reading means 31 reads an identification code, determining means 32 for determining the media type indicated by the identification code, and media for determining by determining means 32 The reading means 31 corresponds to the corresponding means of the reproducing means 30 indicated by the type.
Means 3 for instructing reproduction of media data to be read
3 is provided.

Here, the functions of the multimedia data reproducing apparatus 3 of the present invention are specifically realized by a program, and this program is provided from a medium and installed in the multimedia data reproducing apparatus 3. The present invention is realized by operating on a memory.

In the multimedia data writing device 2 of the present invention configured as described above, the writing means 24 includes the creation means 21 at the beginning of the media data generated by the generation means 20.
The media data is continuously written on the tracks of the multimedia data storage medium 1 without adding the identification code created by the media data division.

When the setting means 22 is provided, the writing means 24 sets the setting means 22 during the writing process.
Is written on the track of the multimedia data storage medium 1 in correspondence with the media data, and when the detecting means 23 is provided, the data length detected by the detecting means 23 is identified at the time of this writing process. Multimedia data storage medium 1 while corresponding to codes
Write to track.

As described above, in the multimedia data storage medium 1 of the present invention, the identification code 11 indicating the media type of the media data 10, the data length 12 of the media data 10, Further, for example, at the end of the media data 10, while recording pointer information 13 to the next media data set for each media type, a plurality of types of media data 10 are continuously recorded on a track without being divided. It adopts a configuration that records the information in a dynamic manner.

On the other hand, in the multimedia data reproducing apparatus 3 of the present invention configured as described above, when the pointer information 13 is not recorded on the multimedia data storage medium 1, the reading means 31 , Data is continuously read from (when the data length 12 is recorded, it is read with reference to it),
In response to this, when the reading unit 31 reads the identification code 11, the determining unit 32 determines the media type indicated by the identification code 11. Instruct the corresponding means of the reproducing means 30 indicated by the type to reproduce the media data 10 read by the reading means 31 following the identification code. Here, the instruction unit 33 may instruct the reproduction of the media data only for the specified media type.

When the pointer information 13 is recorded on the multimedia data storage medium 1, the reading means 31 continuously reads data from the multimedia data storage medium 1 while following the pointer information 13 (data length). When the reading means 31 reads the identification code 11, the determining means 32 determines the type of the medium indicated by the identification code 11. Receiving means 3
3 instructs the corresponding means of the reproducing means 30 indicated by the media type judged by the judging means 32 to reproduce the media data 10 read by the reading means 31 following the identification code. Here, when a part of the pointer information having a medium type is designated, the reading means 31 continuously reads the data while following the designated one.

As described above, according to the present invention, a plurality of types of media data can be recorded on the multimedia data storage medium 1 without being divided for each track, and are recorded on the multimedia data storage medium 1. Can reproduce a plurality of types of media data.

From this, it is possible to collect and record different types of media data as desired, and to record without complicated control, so that the CD-R as the multimedia data storage medium 1 can be recorded.
OM and the like can be easily created.

Then, the multimedia data storage medium 1
Multiple types of media data can be played back in sequence without jumping between tracks, so that the overhead during playback can be reduced and multiple types of media data can be easily played back. Become.

Although the present invention has been described with reference to FIG. 1 as an example in which multimedia data is processed, the present invention is not limited to processing multimedia data.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail according to embodiments. FIG. 2 shows an embodiment of the data structure of the multimedia data storage medium 1 of the present invention.

As shown in this embodiment, the multimedia data storage medium 1 of the present invention continuously records a plurality of types of media data, such as text data, audio data, and moving image data, on a track without dividing them. It is characterized by adopting a configuration. Then, in order to display what kind of media the plurality of types of media data are, a start character 4 for displaying a media type at the head thereof is displayed.
A configuration for recording 0 is adopted.

Here, in the case of audio data other than text data, data may be compressed and recorded. In such a case, information on the compression format is also included as part of the data. Record. If the media data includes control information such as waiting for display of moving image data, the control information is also recorded as part of the data.

In this embodiment, according to the rule that the media data on which the start character 40 is not recorded is text data, the start character 4
A configuration in which 0 is not recorded is adopted.

FIG. 3 shows an example of recording data according to this embodiment. Here, it is assumed that data having contents as shown in FIG. 4 is recorded, and "X'FF '" is a start character 40 indicating that the following media data is audio data, and "X'FE'". Is a start character 40 indicating that the following media data is moving image data.

As described above, in the multimedia data storage medium 1 of the present invention, as shown in FIG. 5, a plurality of types of media data such as text data, audio data, moving image data, etc. This is a configuration for recording.

FIG. 6 shows another embodiment of the data structure of the multimedia data storage medium 1 of the present invention. The difference between this embodiment and the embodiment of FIG. 2 is that, in this embodiment, a configuration is adopted in which the data length 41 of the media data indicated by the start character 40 is recorded in association with the start character 40. . Here, audio data other than text data itself may have data length information itself. In this case, the data length 41 can be omitted.

In this embodiment, the start character 40 is recorded even for text data (character string). FIG. 7 shows an example of recording data according to this embodiment. Here, it is assumed that data having contents as shown in FIG. 4 is recorded, and “X′FC ′” is a start character 40 indicating that the following media data is a character string, and “X′FF ′”. "Is a start character 40 indicating that the following media data is audio data,"X'F
“E ′” is a start character 40 indicating that the following media data is moving image data.

FIG. 8 shows another embodiment of the data structure of the multimedia data storage medium 1 of the present invention. The difference between this embodiment and the embodiment of FIG. 2 is that this embodiment employs a configuration in which pointer information 42 to the next media data is recorded at the end of the media data. The pointer information 42 indicates the next media data using relative position information such as an address and time. For example, which is the next audio data, which is the next moving image data, and which is the next still image. A configuration is employed in which next media data information set for each media type is recorded, such as which data is and which is the next character string.

FIG. 9 shows an example of recording data according to this embodiment. Here, it is assumed that data having contents as shown in FIG. 4 is recorded, and "X'FF '" is a start character 40 indicating that the following media data is audio data, and "X'FE'". "Indicates a start character 40 indicating that the following media data is moving image data,
“00” is a code indicating that the pointer is not registered.

FIG. 10 shows another embodiment of the data structure of the multimedia data storage medium 1 of the present invention. The difference between this embodiment and the embodiment of FIG. 8 is that the embodiment of FIG.
In contrast to the configuration in which the pointer information 42 to the next media data is recorded at the end of the media data, this embodiment records the pointer information 42 at the beginning of the media data in association with the start character 40. This is the point that the configuration is adopted.

FIG. 11 shows an example of recording data according to this embodiment. Here, it is assumed that data having contents as shown in FIG. 4 is recorded, and "X'FF '" is
A start character 40 indicating that the following media data is audio data, "X'FE '" is a start character 40 indicating that the following media data is moving image data,
“00” is a code indicating that the pointer is not registered.

FIG. 12 shows another embodiment of the data structure of the multimedia data storage medium 1 of the present invention. The difference between this embodiment and the embodiment of FIG. 10 is that, in the embodiment of FIG.
This embodiment is different from the first embodiment in that the data length 41 is recorded.

In this embodiment, the start character 40 is recorded also for text data (character string). FIG. 13 shows an example of the recording data according to this embodiment. Here, it is assumed that data having contents as shown in FIG. 4 is recorded, and "X'FF '" is a start character 40 indicating that the following media data is audio data, and "X'FE'". "Indicates a start character 40 indicating that the following media data is moving image data,
“00” is a code indicating that the pointer is not registered.

Although not shown in the recording data examples of FIGS. 3, 9 and 11, when the data length 41 is not recorded in the text data, it is possible to easily know where the text data ends. For this purpose, as shown in FIG. 14, a configuration may be adopted in which a code "X'00 '" indicating the end of data is recorded at the end of the text data. For audio data other than text data,
Usually, it is not necessary to record such a code because the data itself has information indicating data start / data end.

In the multimedia data storage medium 1 disclosed above, the search for the media data was not considered, but in order to enable the search for the media data recorded on the multimedia data storage medium 1,
In accordance with the data structure (data structure having search data) disclosed by the present inventor in Japanese Patent Application No. 7-31977 (name of the invention: data search device), a configuration in which media data is recorded on the multimedia data storage medium 1 is described. It is also possible to take.

In the following, a data recording format having search data disclosed in Japanese Patent Application No. 7-31977 (name of the invention: data search device) will be referred to as a second format format, and will not have this search data. The data recording format will be referred to as a first format format.

FIG. 15 shows a data recording structure of the second format. In the present invention, it is assumed that the second format is applied to media data other than text data.

As shown in this figure, in the second format, the start character 40 of moving image / still image / audio is added at the beginning.
Then, tag information 51, the number of characters 52 of the title, the character string 53 of the title, the comment length 54, the comment 55, the data length 56, and the actual data 57 of the media data are recorded.

"Identification" added before character string 53
The information is a flag indicating whether or not there is information on the data head location. The “identification” information added before the comment 55 includes the data head location, flags F1 to F4, video /
This flag indicates whether or not there is still image address or time / audio address or time information. Here, the data head position indicates the position of the tag information 51 which is the head position of the media data.

Specifically, when “identification = 00”,
It indicates that there is no data head location or the like, and that the character is the next character. When "identification = 01", there is no information on the data head location and the flags F1 to F4, the address of moving image / still image or the It indicates that there is address or time information. When "identification = 10", it indicates that there is only information on the data head location, and when "identification = 11", it indicates that the data head location / flag F1-4 / moving picture / This indicates that there is information on the address of the still image or the address / time of the audio / time. When matching a character string to be searched, this "identification" information portion is masked, and matching is performed using only characters.

F1 is a flag indicating whether or not there is moving image / still image position information. When "F1 = 0", there is no moving image / still image position information and "F1 = 1" Sometimes, it indicates that there is position information of a moving image / still image. F2 is a flag indicating whether or not there is audio position information. When “F2 = 0”, there is no audio position information, and when “F2 = 1”, it indicates that there is audio position information. ing. F3 is a flag indicating whether the position information of the moving image / still image is an address or a time, and “F3 = 0”
Indicates an address, and "F3 = 1" indicates a time. F4 is a flag indicating whether the position information of the voice is an address or a time. When "F4 = 0", the address is indicated, and when "F4 = 1", the time is indicated.

The address of the position information of the moving image / still image may be a relative address or an absolute address. If it is determined in advance that only audio data or only moving image data is to be handled as media data, it is not necessary to have all the flags F1 to F4.

FIG. 16 shows that "Once upon a time ...
Grandfather went out to the mountain. The grandmother went to the river. "
2 shows a data recording structure of audio data according to the format format of FIG.

The tag information 51 indicates that the data is audio information, that a comment 55 exists,
Indicates that audio data is not embedded with the pointer but is directly embedded. The title character number 52 indicates that the title is “7” characters, and the title character string 53 records the title “Once upon a time”. “Identification = 10” added to the character string 53 of the title indicates that there is information on the data head location. Here, this data head location is A3 in the figure.

The comment length 54 indicates that the comment is “3”.
The comment 55 indicates that it is 8 "characters, and the comment 55 records information obtained by converting the actual audio data into characters.
Then, “identification = 11” added to the comment 55 is:
It indicates that there is information on the data head location, flags F1 to F4, and audio addresses. Here, this data head location is A3 in the figure. Then, for example, the flags F1 to F4 added to the character “mu” at the beginning of the comment are “010”.
0 ", which indicates that it has an address of audio position information. Here, this address points to the head of the actual data 57 which is actual audio data.

Next, a method for searching for media data recorded on the multimedia data storage medium 1 in the second format will be described in detail with reference to FIG.
Here, reference numeral 60 shown in the figure is a search screen. Also, 61
Is an occurrence frequency table. As shown in FIG. 18, the occurrence frequency of each character (each word) included in the media data recorded in the second format and the start of each character (each word) The information is managed in association with the appearance location information. Further, reference numeral 62 denotes a next appearance location table, as shown in FIG. 19, of the same character (same word) appearing next to each character (each word) included in the media data recorded in the second format. It manages appearance location information.

The occurrence frequency table 61 and the next appearance location table 62 are basically prepared one for all the media data recorded on the multimedia data storage medium 1, but are prepared for the media data. Sometimes.

From the search screen 60, "voice contents and comments" are input as a search range, and "aunt" is used as a search character.
Is entered. First, the occurrence frequency table 6
By referring to No. 1, the occurrence frequency of the characters "o" and "ba" included in the character string in the search range is checked, the character having the lowest occurrence frequency is extracted, and the head appearance location is specified. By this processing, for example, by extracting the character "O", the head storage address A2 of the character "O" is obtained.

Subsequently, the characters at the addresses before and after the address A2 are read out and collated with the search character "aunt". If they do not match, the address A2 of the next appearance location table 62 corresponding to the address A2
The next appearance location address A5 stored in 2 ′ is specified.
Subsequently, the characters at the addresses before and after the address A5 are read out and collated with the search character "aunt".

If a match is found here, the head address A3 (the position of the tag information 51 of the audio data) of the audio data as the search result is known from the data head location A3 attached to the matched character "O". As a result, the title character string "Once upon a time" is displayed on the display screen, and the audio data "Old grandmother went to the river" is identified from the address A7 of the audio position information attached to the character "O". And output it from the speaker.

As described above, when audio data, moving image data, and still image data are recorded on the multimedia data storage medium 1 according to the second format, the media data can be searched. is there.

There are cases where the media data is recorded on the multimedia data storage medium 1 in the first format format and cases where the media data is recorded on the multimedia data storage medium 1 in the second format format. For the reproduction process, header information having information indicating which format format is used is recorded at the beginning of the multimedia data storage medium 1.

FIG. 20 shows an embodiment of the header information 70. When the header information 70 is designated during reproduction, it is not necessary to record the header information 70 on the multimedia data storage medium 1.

The header information 70 is recorded at the head of the multimedia data storage medium 1 and includes the first
Management area 71, a second management area 72, a third management area 73,
Fourth management area 74, fifth management area 75, sixth management area 7
6, a seventh management area 77, an eighth management area 78, and a ninth management area 79.

The first management area 71 records information as to whether the media data has the above-mentioned pointer information 42 at the head or at the end. The second management area 72 uses three bits to determine which of audio data / moving image data / still image data is included as media data other than text data recorded on the multimedia data storage medium 1. Record information. The third management area 73 records information on whether or not the pointer to the text data is included in the pointer information 42. Fourth management area 74
Records information indicating whether or not the pointer information 42 includes a pointer to audio data.

The fifth management area 75 records information as to whether or not the pointer information 42 contains a pointer to moving image data. The sixth management area 76 records information as to whether or not the pointer to the still image data is included in the pointer information 42. The seventh management area 77 records information as to whether or not the text data has the above-described start character 40. The eighth management area 78 records information on whether or not the media data has the data length 41 described above. The ninth management area 79 records information on whether the media data conforms to the first format or the second format.

Next, a multimedia data writing device 2 of the present invention for writing media data to the multimedia data storage medium 1 of the present invention having such a configuration will be described.

FIG. 21 shows a device configuration of the multimedia data writing device 2 of the present invention. As shown in this figure, the multimedia data writing device 2 of the present invention has a CP
U200, a memory 201, a controller 202 for controlling a CD-ROM 1a as the multimedia data storage medium 1, a text input circuit 204 for inputting text data generated by a keyboard 203, and a microphone 205
Input circuit 206 for inputting audio data in which
And a secondary storage device 20 for storing various media data
7 and an image input circuit 210 for inputting image data generated by the camera 209.

The memory 201 has a CD-ROM 1a
An image data generating unit 211 for generating moving image data and still image data to be written to the CD-ROM, an audio data generating unit 212 for generating audio data to be written to the CD-ROM 1a,
TOC writing means 213 for writing C into CD-ROM 1a
Text data writing means 214 for writing text data input by the text input circuit 204 to the CD-ROM 1a; image data generated by the image data generating means 211; and audio data generated by the audio data generating means 212. The image / audio data writing means 215 to be written to the ROM 1a and the above-mentioned occurrence frequency table 61 used in the second format according to the processing flow of FIG.
And write the following appearance location table 62 used in the second format in accordance with the processing flow of FIG. 23 and write it to the CD-ROM 1a. CD-ROM 1a called location table generating means 217
The program for creating is unfolded.

Here, the functions of the multimedia data writing device 2 of the present invention are specifically realized by a program, and this program is provided from a medium and installed in the multimedia data writing device 2. Then, by operating on the memory, the present invention is realized.

The image data generating means 211 receives the moving image data from the camera 209 or the like as shown in the processing flow of FIG. 24 when the moving image generation processing will be described. Is to compress the data and add a header to that effect
The moving image data to be written to the OM 1a is generated. On the other hand, if a storage format without data compression is specified, the data is not compressed, and a header to that effect is added to generate moving image data to be written to the CD-ROM 1a. Performs processing in accordance with the storage format specified for the
The moving image data to be written to the D-ROM 1a is generated. When the data length 41 and the pointer information 42 are added to the moving image data and the still image data, they are also generated.

Further, the audio data generating means 212
As shown in the processing flow of 5, after receiving the audio data from the microphone 205 or the like, converting it into a digital signal,
When the storage format of data compression is specified, it is compressed and then added with a header to that effect.
-Generate audio data to be written to the ROM 1a. on the other hand,
If a storage format without data compression is specified, the data is not compressed and a header to that effect is added.
For example, audio data to be written to the D-ROM 1a is processed according to the specified storage format, and the audio data to be written to the CD-ROM 1a is generated by adding a header to that effect. I do.
When the data length 41 and the pointer information 42 are added to the audio data, they are also generated.

The TOC writing means 213 executes a process of writing the TOC and the volume file on the CD-ROM 1a as shown in the process flow of FIG. Also,
As shown in the processing flow of FIG. 27, when the storage format for adding the start character 40 is specified, the text data writing unit 214 adds the start character 40 to the beginning of the text data input by the text input circuit 204. After the addition, the text data is written to the CD-ROM 1a. On the other hand, when a storage format without the start character 40 is specified, a process of writing text data input by the text input circuit 204 as it is to the CD-ROM 1a is executed. If the data length 41 and the pointer information 42 are added to the text data, the
Write to D-ROM 1a.

The image / audio data writing means 215
As shown in the processing flow of FIG. 28, the moving image data / still image data generated by the image data generating unit 211 and the audio generated by the audio data generating unit 212 according to the first format shown in FIG. When writing data to the CD-ROM 1a, first, the start character 40 and the data length 41 are written to the CD-ROM 1a, and subsequently, the media data to be written is written to the CD-ROM 1a.
Write to OM1a. On the other hand, when the moving image data / still image data generated by the image data generating unit 211 and the audio data generated by the audio data generating unit 212 are written to the CD-ROM 1a according to the second format, first, FIG. The start character 40, the tag information 51, and the number of characters 5 specified in the second format format shown in FIG.
2 and the like are written to the CD-ROM 1a, and subsequently, a process of writing the media data to be written to the CD-ROM 1a is executed. Note that the text data writing unit 214 does not execute the writing process in the second format because the second data format is not applied to the text data.

FIGS. 29 and 30 show the overall configuration of the processing flow executed by the multimedia data writing device 2 of the present invention. As shown in this processing flow, the multimedia data writing device 2 of the present invention includes the TOC writing unit 21
3 and use TOC and volume file as CD-R
When writing to the OM1a, it is determined whether the issuance of the media data write request is continued or the end of the media data write is issued.

When it is determined that a text data write request has been issued by this determination process, the text input circuit 20 is used by using the text data writing means 214.
4 is written in the CD-ROM 1a.

On the other hand, when judging that the write request of the audio data has been issued, the audio data to be written is generated using the audio data generating means 212 and then the image / audio data writing means 215 is generated. Is used to write the generated audio data to the CD-ROM 1a.

On the other hand, when judging that the writing request of the moving image / still image data has been issued, the image data to be written is generated by using the image data generating means 211, and then the image / audio data writing is performed. Using the loading means 215
The generated image data is written to the CD-ROM 1a.

On the other hand, when judging that a write request for both moving image / still image data and audio data has been issued,
The image data generation unit 211 generates image data to be written, and the audio data generation unit 212 generates audio data to be written. Use,
The generated image data and audio data are stored in a CD-ROM 1a.
Write to.

When judging that the end of the writing of the media data has been issued, the audio data, the moving image data and the still image data are converted into the CD-R in the second format.
It is determined whether or not the data has been written to the OM1a. When it is determined that the data has not been written in the second format, the process ends. When it is determined that the data has been written in the second format, the occurrence frequency table is used. Using the generation means 216, the generation frequency table 61 is generated and C
At the same time as writing to the D-ROM 1a, the next appearance location table 62 is generated using the next appearance location table means 217 and written to the CD-ROM 1a, and then the processing is terminated.

In this processing flow, the CD-ROM
Although the configuration for generating media data when writing to 1a has been described, it may be generated in advance and stored in the secondary storage device 207.

As described above, when the multimedia data writing device 2 of the present invention generates the media data to be written, it adds information such as the start character 40 to the media data, and does not sort the media data by the media type. By writing continuously on the tracks of the multimedia data storage medium 1, the multimedia data storage medium 1 of the present invention having the data structure shown in FIG. 2, FIG. 6, FIG. 8, FIG. is there.

Next, the multimedia data reproducing apparatus 3 of the present invention for reproducing the media data recorded on the multimedia data storage medium 1 of the present invention will be described. FIG. 31 shows a device configuration of the multimedia data reproducing device 3 of the present invention. As shown in this figure, the multimedia data reproducing apparatus 3 of the present invention includes a display 300
, Speaker 301, mode setting unit 302, controller 303, start character detection / next address extraction unit 30
4, a data separation unit 305, and a text display unit 306
, A moving image / still image display unit 307, and a sound generation unit 308
And a MIX unit 309. It should be noted that the bold line in the figure indicates the flow of data, and the thin line indicates the flow of control.

Here, the functions of the multimedia data reproducing apparatus 3 of the present invention are specifically realized by a program, which is provided from a medium and installed in the multimedia data reproducing apparatus 3. The present invention is realized by operating on a memory.

The mode setting section 302 is a CD-ROM
1a, which part of the media data to be reproduced, whether the media data is recorded in the first format, or whether it is recorded in the second format, or other than the present invention. Of the mode information such as whether the information is recorded in the standard format. In the mode information, CD-R
If there is something recorded at the beginning of OM1a,
Since it can be known by reading it, the mode setting unit 302 may set mode information excluding this.

The controller 303 has a CD-ROM 1a
To execute a process of reading media data from. The start character detection / next address extraction unit 304
3, the start character 40 and the pointer information 42 of the read media data are detected, and according to the detection result of the start character 40, when it is determined that the read media data is text data, the read media data is displayed in the text display section. When the pointer data 42 is set, the next media data is sent to the controller 303 when the pointer information 42 is set. Of the read position of.

The data separation unit 305 determines the type of media data received from the start character detection / next address extraction unit 304 in accordance with the notification from the start character detection / next address extraction unit 304, and determines whether the type of moving image data or still image If it is data, it passes it to the moving image / still image display unit 307, and if it is audio data, it passes it to the audio generation unit 308.

The text display unit 306 displays a start character detection /
A process for enabling text data received from the next address extracting unit 304 to be displayed on the display 300 is executed.

The moving image / still image display unit 307 restores the encoded moving image data and still image data received from the start character detection / next address extraction unit 304,
Display at 00.

The voice generating section 308 restores the coded voice data received from the start character detection / next address extracting section 304 and outputs it to the speaker 301. MIX section 3
In step 09, the text data output from the text display unit 306 and the moving image data / still image data output from the moving image / still image display unit 307 are combined and output to the display 300.

Next, a description will be given of a process of reproducing media data executed by the multimedia data reproducing apparatus 3 of the present invention configured as described above. In the multimedia data reproducing apparatus 3 according to the present invention, when a reproducing operation is started, the mode setting unit 302 sets mode information necessary for reproducing, for example, by interacting with a user and notifies the controller 303 of the mode information. A reproduction request is issued to 303.

Upon receiving the reproduction request and the mode information, the controller 303 notifies the start character detection / next address extraction unit 304 and the data separation unit 305 of the set mode information and the reproduction start signal. In response to this, the start character detection / next address extraction unit 304 and the data separation unit 305 enter a playback start wait state.

Then, the controller 303 reads the TOC and the volume file of the CD-ROM 1a in accordance with the notified mode information, specifies a reading start address specified by the mode information, and issues a data read request to the CD-ROM 1a. Issue CD-ROM1
Read the media data from 2a.

When the media data is read from the CD-ROM 12a in this way, the start character detection / next address extraction unit 304 detects the start character 40 added to the head of the media data, and according to the detection result. When it is determined that the media data is text data, the text data is sent to the text display unit 306 to be displayed on the display 300.

On the other hand, when judging that the media data is audio data, moving image data, or still image data according to the detection result, while notifying the data type,
The media data is sent to the data separation unit 305.
Here, if the data length 41 is added to the media data, the start character detection / next address extraction unit 304 cuts out the media data using this.

Upon receiving the media data from the start character detecting / next address extracting unit 304, the data separating unit 305, when judging that it is audio data according to the notified data type, converts the audio data into an audio generating unit. The signal is output to the speaker 301 by transmitting the signal to the speaker 308. On the other hand, when it is determined that the data is moving image data or still image data, the moving image data or still image data is transmitted to the moving image / still image display unit 307 and displayed on the display 300.

At this time, the MIX unit 309 erases the text data sent from the text display unit 306 in accordance with an instruction such as mode information and the like, and deletes the moving image / still image display unit 30.
7 may be displayed so as to display only the moving image data and still image data sent therefrom.

At the time of this reproduction processing, if there is an instruction to reproduce all the media data recorded on the CD-ROM 1a according to the mode information, the controller 303 records the data on the CD-ROM 1a. Then, the start character detection / next address extraction unit 304 processes all of the read media data as reproduction targets.

On the other hand, according to the mode information, the CD-ROM
If there is an instruction to reproduce only the media data of a specific media type (there may be a plurality of media types) recorded in 1a, the start character detection / next address extraction unit 3
04 is pointer information 4 of the reproduced media data.
According to 2, the recording position of the next media data to be reproduced is detected, and in response to this, the controller 303 reads out the media data recorded at the recording position.

As described above, the multimedia data reproducing apparatus 3 of the present invention can reproduce a plurality of types of media data in a sequence without jumping between tracks of the multimedia data storage medium 1. In this case, overhead can be reduced, and a plurality of types of media data can be easily reproduced.

Next, according to the recording example shown in FIG. 3 (the recording example of the first format shown in FIG. 2), a specific example of the reproduction processing of the media data recorded on the multimedia data storage medium 1 Will be described.

When the controller 303 detects that the media data recorded on the CD-ROM 12a conforms to the format shown in FIG. 2 according to the mode information, the start character detection / next address extraction unit 304 and the data separation unit 305 , The start of the operation is instructed, and the reading of the media data from the CD-ROM 1a is started.

Start character detection / next address extraction unit 304
Receives the data read from the CD-ROM 1a, checks whether the data is text data or the start character 40, and when the data is detected as text data, displays the text data in the text display unit 306. By transmitting, it is displayed on the display 300. In accordance with this processing, text data “a dog walked on a sunny day one day” is displayed on the display 300.

Subsequently, the start character detection / next address extraction unit 304 outputs the "X'F" which is the start character 40 of the voice data.
When the appearance of “F ′” is detected, it is determined that the media data subsequently read is audio data, and the “X′FF ′” and the audio data are sent to the data separation unit 305. In response, the data separation unit 305
The sound data is output to the speaker 301 by sending the sound data to the sound generation unit 308. In accordance with this processing, the voice data of “one and a pleasant mood” is output from the speaker 305.

Subsequently, the start character detection / next address extraction unit 304 outputs the start character 40 "X'F"
When the occurrence of “E ′” is detected, it is determined that the media data subsequently read is moving image data, and the “X′FF ′” and the moving image data are sent to the data separation unit 305. In response, the data separation unit 305
By sending the moving image data to the moving image / still image display unit 307, the moving image data is displayed on the display 300. In accordance with this processing, the moving image data of “the state where the dog walks” is displayed on the display 300.

Similarly, the media data of the recording example shown in FIG. 3 is reproduced. It is noted that the media data recorded on the CD-ROM 1a conforms to the format shown in FIG.
In the case where the data is recorded in 1a, the start character detection / next address extraction unit 304 detects this by referring to the data read from the CD-ROM 1a.

Next, according to the recording example shown in FIG. 9 (the recording example of the first format shown in FIG. 8), a specific example of the reproduction processing of the media data recorded on the multimedia data storage medium 1 Will be described. here,
It is assumed that there is an instruction to reproduce only the audio data of the media data recorded on the CD-ROM 1a.

The controller 303 detects that the media data recorded on the CD-ROM 12a is in accordance with the format shown in FIG. 8 according to the mode information, and issues an instruction to reproduce only the audio data according to the mode information. When the start is detected, the start character detection / next address extraction unit 304 and the data separation unit 305 are instructed to start while notifying them, and then the reading of the media data from the CD-ROM 1a is started.

Start character detection / next address extraction unit 304
Receives the data read from the CD-ROM 1a, "X'FF '" which is the start character 40 of the audio data
Search for the first voice data according to "X'FF '"
And the audio data read subsequently thereto are sent to the data separation unit 305, and the data
Sends the voice data to the voice generation unit 308 to output the voice data to the speaker 301. In accordance with this processing, the voice data of “one and a pleasant mood” is output from the speaker 305.

Subsequently, the start character detection / next address extraction unit 304 detects the recording position of the next audio data according to the pointer information 42 added to the end of the read audio data, and notifies the controller 303 of the detection position. . In response to this, the controller 303 reads the media data recorded at the notified recording position from the CD-ROM 1a.

Start character detection / next address extraction unit 304
Receives the data read from the CD-ROM 1a, "X'FF '" which is the start character 40 of the audio data
Confirm that the data is audio data according to “X'F
F ′ ”and the audio data that is subsequently read out are sent to the data separation unit 305, and the data separation unit 305 sends the audio data to the audio generation unit 308 and outputs the data to the speaker 301. . In accordance with this processing, the voice data of “one-one pleasant” is transmitted to the speaker 30.
5 will be output.

Similarly, only the audio data in the media data of the recording example shown in FIG. 9 is reproduced. If the media data recorded on the CD-ROM 12a is recorded on the CD-ROM 1a in accordance with the format shown in FIG. 8, the start character detection / next address extraction unit 304
This is detected by referring to the data read from 1a.

Next, a specific example of a process of reproducing media data recorded on the multimedia data storage medium 1 will be described with reference to a recording example in the second format shown in FIG. Here, it is assumed that there is an instruction to reproduce only the audio data and the moving image data of the media data recorded on the CD-ROM 1a. It is also assumed that nothing is registered in the pointer information 42.

When the controller 303 detects that the instruction is to reproduce only the audio data and the moving image data in accordance with the mode information, the controller 303 starts up while notifying the start character detection / next address extraction unit 304 and the data separation unit 305 of the instruction. And then starts reading media data from the CD-ROM 1a.

Start character detection / next address extraction unit 304
When the data read from the CD-ROM 1a is received, it is recorded at the head thereof that the data conforms to the second format. By referring to the data, the media data is recorded in the second format. Is determined, and the fact is notified to the data separation unit 305.

Subsequently, the start character detection / next address extraction unit 304 outputs the "X'F" which is the start character 40 of the voice data.
F ′ ”or“ X′F ”which is the starting character 40 of the moving image data.
E ′ ”, audio data or moving image data is searched, and when it is searched, tag information 51 unique to the second format is searched.
And the like, while extracting the found media data, sending the start character 40 and the extracted media data to the data separation unit 305, and receiving
When audio data is transmitted, the data separation unit 305 outputs the audio data to the speaker 301 by transmitting the audio data to the audio generation unit 308. When the video data is transmitted, the data separation unit 305 converts the video data into a video / still image. Image display unit 30
7 to be displayed on the display 300.

Hereinafter, the start character detection / next address extraction unit 3
04 and the data separation unit 305 reproduce only the audio data and the moving image data by repeating this processing. To explain with the recording example shown in FIG.
When the data is read from M1a, the start character detection / next address extraction unit 304 searches for the first voice data according to the start character 40 of the voice data, and removes the tag information 51 and the like specific to the second format while removing the tag data 51 and the like. The found voice data is extracted and the start character 4 of the voice data is extracted.
0 and the extracted audio data are sent to the data separation unit 305, and in response, the data separation unit 305 sends the audio data to the audio generation unit 308 to output the data to the speaker 301. In accordance with this processing, the voice data of “one and a pleasant mood” is output from the speaker 305.

Subsequently, the start character detection / next address extraction unit 304 searches for the next moving image data in accordance with the starting character 40 of the moving image data, and removes the tag information 51 and the like specific to the second format, while searching for the next moving image data. The extracted moving image data is extracted, and the start character 40 of the moving image data and the extracted moving image data are sent to the data separating unit 305. In response to this, the data separating unit 305 converts the moving image data into the moving image /
By sending the image to the still image display unit 307, the display 30
Display at 0. In accordance with this processing, the moving image data of “the state where the dog walks” is displayed on the display 300.

In the same manner, only the audio data and the moving image data of the media data of the recording example shown in FIG. 31 are reproduced. If it is not recorded in the CD-ROM 1a that the media data recorded in the CD-ROM 12a conforms to the second format, the start character detection / next address extraction unit 304
Will detect this in accordance with the mode information notified from the controller 303.

[0116]

As described above, according to the present invention,
A plurality of types of data can be recorded on a data storage medium without being divided for each track, and a plurality of types of data recorded on the data storage medium can be reproduced.

From this, it becomes possible to collect and record different types of data as desired, and to record without complicated control, so that a CD-ROM or the like as a data storage medium can be easily created. become able to.

Further, since it is possible to sequentially reproduce a plurality of types of data without jumping between tracks of the data storage medium, it is possible to reduce the overhead at the time of reproduction, and to transfer the plurality of types of data. It will be easy to play.

The effect of the present invention is particularly significant when multimedia data is to be processed. According to the present invention, since the TOC is unnecessary, the TOC information does not deviate from the actual data storage position, and writing to a CD-ROM or the like does not fail. CD-R to be done
The inconvenience of making a lot of OMs and the like is also eliminated.

[Brief description of the drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is an embodiment of a multimedia data storage medium of the present invention.

FIG. 3 is a recording example according to the embodiment of FIG. 2;

FIG. 4 is an example of recording data.

FIG. 5 is an explanatory diagram of a multimedia data storage medium of the present invention.

FIG. 6 is another embodiment of the multimedia data storage medium of the present invention.

FIG. 7 is a recording example according to the embodiment of FIG. 6;

FIG. 8 is another embodiment of the multimedia data storage medium of the present invention.

FIG. 9 is a recording example according to the embodiment of FIG. 8;

FIG. 10 is another embodiment of the multimedia data storage medium of the present invention.

FIG. 11 is a recording example according to the embodiment of FIG. 10;

FIG. 12 is another embodiment of the multimedia data storage medium of the present invention.

FIG. 13 is a recording example according to the embodiment of FIG.

FIG. 14 is an explanatory diagram of recording of text data.

FIG. 15 is an explanatory diagram of a second format format.

FIG. 16 is an example of a recording format of audio data.

FIG. 17 is an explanatory diagram of a search process of audio data.

FIG. 18 is an explanatory diagram of an occurrence frequency table.

FIG. 19 is an explanatory diagram of a next appearance location table.

FIG. 20 is an example of header information.

FIG. 21 is a configuration diagram of a multimedia data writing device according to the present invention.

FIG. 22 is a processing flow of an occurrence frequency table generation unit.

FIG. 23 is a processing flow of a next appearance location table generation unit.

FIG. 24 is a processing flow of image data generation means.

FIG. 25 is a processing flow of an audio data generation unit.

FIG. 26 is a processing flow of TOC writing means.

FIG. 27 is a processing flow of a text data writing unit.

FIG. 28 is a processing flow of an image / audio data writing unit.

FIG. 29 is a processing flow of the multimedia data writing device of the present invention.

FIG. 30 is a processing flow of the multimedia data writing device of the present invention.

FIG. 31 is a diagram showing the configuration of a multimedia data reproducing apparatus according to the present invention.

FIG. 32 is an example of recording in a second format.

FIG. 33 is a configuration diagram of a storage medium.

FIG. 34 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multimedia data storage medium 2 Multimedia data writing device 3 Multimedia data reproducing device 10 Media data 11 Identification code 12 Data length 13 Pointer information 20 Generating means 21 Creating means 22 Setting means 23 Detecting means 24 Writing means 30 Playing means 31 reading means 32 determining means 33 indicating means

Claims (14)

[Claims] 1. A data storage medium comprising a track and recording data on the track, wherein data of a specific type is recorded on the track in the order of reproduction, and reproduction of data following the specific type data is performed. A data storage medium characterized by recording an identification code indicating that the method is changed. 2. The data storage medium according to claim 1, wherein pointer information to the next data using the same reproducing method is recorded. 3. The data storage medium according to claim 1, wherein a data length of data obtained by a reproduction method indicated by the identification code is recorded. 4. A data writing device for writing data to a track of a storage medium, comprising: a creating means for indicating a data reproducing method and generating an identification code corresponding to the reproducing method; Generating means for generating, and adding to the head of the data generated by the generating means, the identification code generated by the generating means indicating the reproducing method, and writing the tracks on the track of the storage medium continuously in the order of reproduction. A data writing device comprising: a writing unit. 5. The data writing apparatus according to claim 4, further comprising: setting means for setting pointer information to next data using the same reproduction method for the data generated by the generating means; A data writing device, wherein pointer information set by the setting means is written in a storage medium in correspondence with data. 6. The data writing device according to claim 4, further comprising a detection unit configured to detect a data length of the data generated by the generation unit, wherein the writing unit identifies the data length detected by the detection unit. A data writing device characterized by writing to a storage medium in correspondence with a code. 7. A data reproducing apparatus for reading data recorded on a track of a storage medium and reproducing the data, wherein data of a specific type is recorded on the track of the storage medium in the order of reproduction. And an identification code for indicating that the method of reproducing data following the specific type data is to be changed is recorded. A reproducing means for reproducing data by a reproduction method corresponding to the identification code; Reading means for reading out the data, when the reading means reads the identification code, determining means for determining the type of the identification code, and reproducing means corresponding to the type of the identification code determined by the determining means. Instruction means for instructing reproduction of the data read by the reading means following the identification code. 8. The data reproducing apparatus according to claim 7, wherein the instruction means instructs the reproduction of data only for the one designated by the identification code. 9. A data reproducing apparatus for reading data recorded on a track of a storage medium and reproducing the data, wherein data of a specific type is recorded on the track of the storage medium in the order of reproduction. An identification code for indicating that the reproduction method of the data following the specific type data is to be changed is recorded, pointer information to the next data using the same reproduction method is recorded, and the reproduction code corresponding to the identification code is recorded. Reproducing means for reproducing data by a method, reading means for continuously reading data while tracing the pointer information from the storage medium, and judging the type of the identification code when the reading means reads the identification code. Means for reproducing the data read by the reading means following the identification code to the reproducing means corresponding to the type of the identification code determined by the determining means. In that it comprises an instruction means for instructing the data reproducing apparatus according to claim. 10. The data reproducing apparatus according to claim 9, wherein when a part of the pointer information is designated, the reading means continuously reads the data while following the designated one. A data reproducing apparatus characterized by the following. 11. The data reproducing apparatus according to claim 7, 8, 9 or 10, wherein when the storage medium adopts a configuration in which the data length of the data is recorded in association with the identification code, the data length is read. A data reproducing device characterized by reading data while referring to the data. 12. A program storage medium for storing a program used for realizing a data writing device for writing data to a track of a storage medium, wherein the program storage medium indicates a data reproduction method and creates an identification code corresponding to the data reproduction method. Generating means for generating data of a specific type; generating means for generating data as data of a specific type; reproducing the data generated by the generating means by adding an identification code generated by the generating means indicating the reproducing method to the head of the data. A program storage medium for storing a program for realizing writing means for writing to a track of a storage medium continuously in a predetermined order. 13. A program storage medium for reading a data recorded on a track of a storage medium and storing a program used for realizing a data reproducing apparatus for reproducing the data, wherein the program is reproduced on a track of the storage medium. When data of a specific type is recorded on the track in the order shown, and an identification code indicating that the reproduction method of data following the specific type data is to be changed is recorded, a reproduction method corresponding to the identification code is recorded. Reproducing means for reproducing data from the storage medium; reading means for continuously reading data from the storage medium; determining means for determining the type of the identification code when the reading means reads the identification code; Instruction means for instructing the reproducing means corresponding to the type of the identification code to be judged to reproduce the data read by the reading means following the identification code; Storing a program for implementing a program storage medium characterized. 14. A program storage medium for reading data recorded on a track of a storage medium and storing a program used for realizing a data reproducing apparatus for reproducing the data, wherein the program is reproduced on a track of the storage medium. Data of a specific type is recorded on the track in the order described, an identification code for indicating that the reproduction method of data following the specific type data is to be changed is recorded, and pointer information to the next data using the same reproduction method is recorded. Reproducing means for reproducing data by a reproducing method corresponding to the identification code when recorded; reading means for continuously reading data while tracing the pointer information from the storage medium; A reading means for determining the type of the identification code, and a reproducing means corresponding to the type of the identification code determined by the determining means. Against it, storing a program for implementing an instruction means for instructing reproduction of data to be read in the reading means following the identification code, a program storage medium characterized.