JP2006024297A - Language selection method, playback apparatus, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To determine the language of audio and subtitles recorded on a DVD-VIDEO using a language code. However, for example, all kinds of Chinese are treated as a single language, so it is not possible to distinguish between Mandarin and Cantonese. When a new language code is provided, it is handled as a completely different language, so the language selection algorithm becomes complicated and cannot be handled properly in many cases.
A dialect code is provided in addition to a language code, and language discrimination is performed using both codes. If the dialect codes do not match, the language of the same language code is selected.
[Selection] Figure 9

Description

  The present invention relates to a playback apparatus and medium, and more particularly to a method for selecting subtitles and audio in a desired language from a recording medium on which a plurality of subtitles and audio are recorded together with video.

  A so-called video disc in which content such as a movie is recorded on a recording medium such as an optical disc is widely used. A typical example is a DVD (Digital Versatile Disc) -Video. When these video discs are used, movies can be easily played back even at home.

  In these video discs, audio and subtitles are recorded together with video. Since audio and subtitles differ depending on the language, audio and subtitles corresponding to a plurality of languages are often recorded so that the user can select as necessary.

  Patent Document 1 discloses a playback apparatus configured to record a plurality of different subtitles together with a video and to be selected by a user.

JP-A-9-231726

  The playback apparatus as described above has the following problems when performing language selection.

  For example, since Chinese is represented by a single language code “zh”, there is a drawback in that differences between Mandarin, Cantonese, Shanghai and the like cannot be distinguished. That is, when Mandarin and Cantonese are recorded on the same disc, the same language is recorded, resulting in confusion in the language selection process.

  On the other hand, it is possible to assign different language codes in order to clearly distinguish them, but in this case, since they are handled as different languages, problems still arise. For example, if English and Mandarin are recorded on the disc and the user specifies Cantonese, there will be no language that matches the user's specification, which is inconvenient.

  As described above, the first object of the present invention is to make it easy to handle dialects of languages to which the same language code is assigned, and to simplify the language selection procedure. .

  In addition, the second object of the present invention is to provide a reproducing apparatus that can reproduce without problems both when the language selection is expanded and when a recording medium on which only a conventional language code is recorded is reproduced. An object of the present invention is to provide a recording medium that can be reproduced without any problem even by a reproducing apparatus that supports only language codes.

In order to solve the above problems, the present invention
When selecting information corresponding to a specified language from information corresponding to a plurality of different languages,
Each information has information language code and information dialect code,
Set the selected language code and selected dialect code to select information,
If the information language code matches the selected language code and there is information that matches the information dialect code and the selected dialect code, select the information that matches both,
If the information language code and the selected language code match, and there is no information that matches the information dialect code and the selected dialect code, and there is information that matches only the information language code and the selected language code, the information Provided is an information selection method characterized in that control is performed so as to select information in which only a language code and a selected language code match.

  In the language selection method according to the present invention, language selection is performed using a dialect code together with a language code. Therefore, even in a language having a plurality of different dialects, they can be handled as different languages.

  In addition, since the language is selected using both the language code and dialect code, it is possible to preferentially select the language that matches the language code even in languages that do not match the dialect. It is easy to select a language closer to.

  According to the present invention, it is possible to provide an information selection method, a reproducing apparatus, and a recording medium that can select an appropriate language and are improved in usability.

  FIG. 1 shows a block diagram of a playback apparatus according to the present invention. In FIG. 1, 101 is an optical disk, 102 is a pickup, 103 is a reproduction signal processing circuit, 104 is an output control circuit, 105 is a servo unit, 106 is a drive control unit, 107 is an audio decoder, 108 is an audio output terminal, and 109 is an image. Decoder, 110 is a caption synthesis unit, 111 is a caption output unit, 112 is a video output terminal, 113 is a system control unit, and 114 is a remote control reception unit.

  FIG. 2 is an example of a language code. In the playback apparatus of the present invention, the language code is represented by a three-letter language code defined by ISO-639. It also defines the dialect code for each language. That is, for Chinese, “standard language”, “Mandarin”, “Cantonese”, “Shanghai”, “Fujian”, “Hunan”, “Hakka” are defined, and dialect codes from 0 to 6 are assigned respectively. It corresponds. Here, the expression “dialect” is used, which represents a difference in each language, and is slightly different in meaning from “dialect” in Japanese. Similarly, for English, French, etc., dialect codes are set based on the respective differences. Here, the language considered to be standard in each language is made to correspond to dialect code No. 0.

  In the playback device, the language used by the user is set in the initial setting before playback. Specifically, when a user presses an initial setting button on a remote controller (not shown) to transmit an initial setting command, the remote control receiving unit 114 receives the initial setting command and the system control unit 113 receives the initial setting command. The system control unit 113 displays an initial setting screen using the caption display unit 111 in response to the initial setting command.

  Here, the user selects a language selection menu and selects a language to be used as a default setting. At this time, the languages shown in the right column of FIG. 2 may be displayed as a list, and the user may be prompted to select a language normally used.

  The language code and dialect code corresponding to the language selected by the user are set in the language setting register in the system control unit. This language setting register has a structure as shown in FIG. 3 and has a total length of 32 bits. Of these, a dialect code is set in the upper 8 bits, and a 3-character language code is set in the lower 24 bits. It is desirable that the language setting register retains its contents even when the power is turned off unless the setting is performed again.

  As described above, the language code used in the playback apparatus is set.

  Next, the operation during reproduction of the optical disc will be described below. FIG. 4 shows the structure of a file recorded on the optical disc according to the present invention.

  In FIG. 4, reference numeral 401 denotes an info.info file in which information such as the number of playlists and file names in the DVR directory is written. dvr file 402 is a menu.menu. Java (registered trademark) file, 403 is a playlist file in which information such as the reproduction position, order and mark position of video is recorded, and 404 is clip information in which information such as a reproduction start point on the stream file and its packet position is recorded. 405 is a stream file in which information packets such as video and audio are recorded.

  Here, the stream file 405 will be described. Video information is recorded after the data amount is reduced by the MPEG2 system, which is one of image information compression techniques, converted into a transport stream format. MPEG2 can perform an excellent data amount reduction even for NTSC format images and high-definition HD images typified by high-definition images, reducing the data amount to about 1/10 to 1/50 of the original image. Can be reduced. For example, sufficient image quality can be obtained with a data amount of about 6 Mbps for NTSC format images and about 20 Mbps for HD images. Image compression by MPEG2 is widely used for image storage including DVD and digital broadcasting.

  Here, the MPEG2 format will be described as an example, but it goes without saying that data may be encoded using another image compression method.

  As with video, audio data is compressed using a voice compression technique. There are various compression techniques such as MPEG1 audio and AAC format used in BS digital broadcasting. Also, since audio information has a smaller data amount than video information, it is possible to record data in a linear PCM format without compression.

  FIG. 5 shows a recording format of the MPEG2 packet. In FIG. 5, 501 is a packet header, 502 is an MPEG packet, 503 is a synchronization byte, 504 is a packet ID, and 505 is a data recording area.

  As described above, each piece of information such as encoded video information and audio information is multiplexed as a transport stream and recorded as one stream file in order to facilitate transmission and storage. Information such as video information and audio information is divided into 188-byte MPEG packet formats and transmitted. At that time, a PID (packet ID) for packet identification is included at the head of each packet. By adding a single PID to a series of information, packets can be easily separated during reproduction. A 188-byte MPEG packet format data is appended with a 4-byte packet header to form a 192-byte recording packet. A 30-bit time stamp indicating the packet transmission time is recorded in 30 bits of the packet header. The recording packet with the packet header added is recorded on the optical disc as a stream file.

  Here, a plurality of sounds can be multiplexed in the transport stream. That is, in addition to the original language speech, it is also possible to record Japanese dubbed speech or to multiplex speech with better sound quality. In this case, by adding a different PID for each voice, multiplexing and separation from the stream are possible.

  In addition to video / audio, various information packets such as caption information, graphic information, and control commands can be multiplexed in the transport stream.

  The caption information is obtained by converting a character string to be displayed in a so-called HTML or XML format into an MPEG packet. As for subtitle information, a plurality of pieces of subtitle information may be prepared according to the language and multiplexed in the transport stream. Of course, instead of the character string format, characters may be converted into graphics and recorded as graphic format data.

  As with the audio stream, the caption information is also converted into the MPEG packet format, and a PID different for each language is added and multiplexed into the transport stream, so that the caption information in the desired language can be easily extracted. .

  In addition to the above streams, the transport stream also multiplexes packets such as PMT (Program Map Table) and PAT (Program Allocation Table) representing the relationship of each PID, and PCR (Program Clock Reference) representing time information. To do. The transport stream that has been multiplexed in this way is recorded on the optical disc as a transport stream file 405.

  Next, the clip information file 404 will be described. As described above, video information is recorded after MPEG2 format image compression. In the MPEG2 format, the data amount is reduced by using the correlation between successive images. Specifically, processing is performed in which the data of the immediately preceding image is used as it is without retransmitting the information of a portion that does not change between consecutive images. For this reason, image data in which only changes are encoded has a drawback that information on all pixels cannot be decoded from the data. Therefore, the only images that can be played back by fast-forwarding, skipping operation, or the like are images in which all pixels are encoded.

  In general, image compression in the MPEG2 format is often performed by combining about 15 images. This set of images is called GOP (Group Of Pictures). If playback is performed from the beginning of this GOP, the image can be played back immediately.

  In the clip information file, the packet position at the tip of the GOP is recorded together with the encoding time of the image (corresponding to the value of Presentation Time Stamp). Thereby, it is possible to easily search for a position where reproduction is started by searching or skipping.

  The clip information file has a one-to-one correspondence with the transport stream file. 01000. Corresponding to a transport stream file called m2ts, 01000. If a clip information file called clpi is recorded, correspondence between files can be easily identified.

  Next, the playlist file 403 will be described. The playlist file is a file in which information defining the playback order of the transport stream file is recorded. In the playlist file, one or more sets of information such as the file identifier, the playback start time, and the playback end time of the stream file to be played are recorded as play item information.

  In addition, the playlist file includes a PID corresponding to each information, stream encoding information corresponding to the PID, language information, and the like.

  FIG. 6 shows a data structure indicating the relationship between the PID of the caption information in the playlist file and the language information. length is the data length of the information, and ref_to_stream_PID is the PID of the caption information. stream_coding_type is a value used to determine the type of information, and is 0x90 for caption information. PG_language_code is a value indicating the language code of the subtitle, and is a three-character string defined in ISO-639. PG_dialect_code is a dialect code for subtitles.

  FIG. 7 shows a data structure indicating the relationship between the PID of the audio information and the language information in the playlist file. length is the data length of the information, and ref_to_stream_PID is the PID of the audio information. stream_coding_type is a value used to determine the type of information, and is 0x80 for audio information. audio_language_code is a value indicating an audio language code, and is a three-character string defined in ISO-639. audio_dialect_code is the dialect code of the subtitle.

  The correspondence between specific data and language codes is shown in FIG. The number of subtitle streams, language code, dialect code, and stream PID are recorded as a set. During playback, language information can be selected using these pieces of information. The same applies to the language code of the voice information.

  At the time of reproduction, first, the user sets the optical disc 101 and inputs a reproduction start command using a remote controller (not shown). The input reproduction start command is input to the system control unit 113 via the remote control reception unit 114.

  When a playback start command is input, the system control unit 113 performs playback processing according to the procedure of a built-in playback program. In the reproduction process, first, file management information on the optical disc is read to obtain information on the file recorded on the disc. Here, as the file management information, for example, information specified by UDF (Universal Disc Format) may be used.

  Specifically, the system control unit 113 issues a data read command to the drive control unit 106 and instructs the drive control unit 106 to read the sector data in which the file management information is recorded. The drive control unit 106 controls the servo unit 105 to read the data of the designated sector according to the input data read command. The servo unit controls the rotation speed of the optical disc and the position of the pickup in accordance with control from the drive control unit. The pickup 102 reads data on the optical disc by irradiating the optical disc with laser light and detecting the reflected light. The reflected light detected by the pickup 102 is input to the reproduction signal processing circuit 103 after being subjected to predetermined amplification processing and demodulation processing. The reproduction signal processing circuit performs predetermined demodulation processing, error correction processing, and the like on the signal from the pickup in accordance with control from the drive control unit, thereby obtaining sector data. The drive control unit 106 outputs the sector data prepared by the reproduction signal processing circuit 103 to the system control unit 113. With the above procedure, the sector data designated by the system control unit is read from the optical disk. Thereafter, the data reading procedure is the same.

  In accordance with the file management information read from the optical disc, the system control unit can obtain information such as the file identifier (file name), recording sector number, and data length of each file shown in FIG.

  In order to reproduce the content on the optical disc, first, the menu display program 402 is read out and executed. The menu display program is programmed to display a menu that allows selection of content recorded on the optical disc.

  A specific reading procedure of the menu display program is performed by the above-described sector data reading procedure, and the menu display operation is performed according to the menu display program. Here, it is assumed that the menu display program is written in a general-purpose program language called so-called Java (registered trademark). Of course, this is not limited, and it may be performed in a language dedicated to menu display, or a display language such as XML or HTML may be used. Moreover, you may display using a video content.

  The user selects desired content according to the menu display. Here, each content corresponds to the playlist 403, and the playlist 403 corresponding to the content selected by the user is read and reproduced.

  The system control unit reads the playlist 403 corresponding to the content selected by the user, and analyzes the content. Specifically, the reproduction start time and reproduction end time of each stream 405 are obtained from the information of each play item included in the playlist. On the other hand, in order to select the language of audio information and subtitle information, the PID of the audio packet and the PID of the subtitle information packet are selected. Here, a description will be given by taking PID selection of caption information as an example.

  As described above, subtitle information streams in a plurality of languages are included in the stream to be played back, and as shown in FIG. 8, language codes and dialect codes corresponding to subtitle data are included in the playlist. Are listed. The system control unit 113 compares the value of the speech language selection register (FIG. 3) set by the user with the language code and dialect code in the playlist, and selects an optimal speech stream.

  FIG. 9 shows a selection procedure of caption information PID according to the present invention. First, when language selection is started (S1), the system control unit 113 determines whether there is a subtitle stream corresponding to the designated language code set in the language setting register (FIG. 3) by the user (S2). .

Here, if there is no subtitle stream corresponding to the language code designated by the user, the first appearing audio stream in the stream information is selected as not corresponding to the language designated by the user (S3). The PID of the stream is used for selecting caption information.
In this case, the disc does not correspond to the language desired by the user. That is, since it is highly possible that the user cannot understand the selected language, the user is prompted to perform language switching manually as necessary. This is the case, for example, when Cantonese is specified but no language in the Chinese group is included.

  If it is determined in S2 that the language specified by the user exists, it is then determined whether there is a stream that matches the dialect code specified by the user (S4). Here, if there is a stream having the same dialect code as the dialect code specified by the user, the stream matches the language specified by the user, so the PID corresponding to this language is used for subtitle information selection. (S5). This is the case where Cantonese is specified and Cantonese exists.

  In S4, when there is no stream corresponding to the dialect code designated by the user, the process proceeds to S6, and it is determined whether or not there is a stream having the language code designated by the user and the dialect code being No. 0. Here, the dialect code No. 0 designates the language used most standardly in the language group. That is, since the stream whose dialect code is 0 in the language designated by the user is close to the language designated by the user, the PID of the stream corresponding to this language is used for subtitle selection (S7). This is the case, for example, when Cantonese is specified but there is no Cantonese and Mandarin is present. In this case, the possibility that the user can understand the language of the selected stream is very high.

  If there is no standard language specified by the user in the playback stream in S6, another dialect belonging to the language code specified by the user is selected, and the PID of the stream corresponding to that language is used for subtitle selection. Specifically, Cantonese is specified, but neither Cantonese nor Mandarin is used but Shanghai is present. In this case, since the language group is the same, the possibility that the user can understand is relatively high.

  Through the procedure described above, a subtitle PID close to the language designated by the user is selected and used for reproduction.

  By the same procedure, the PID of the voice packet is also determined. Here, only one language setting register is provided, but this is not limited, and it is possible to select different languages by providing a subtitle language setting register and an audio language setting register separately. It is. Further, when the language specified by the user is selected as the audio, the subtitles may not be displayed. When the language specified by the user as the subtitle is selected, the audio may be different from the language specified by the user.

  The system control unit 113 sets the PID of the audio stream and the PID of the caption information stream selected by the above procedure in the output control unit 104. Also, the PID of the video stream recorded in the playlist is set in the output control unit 104.

  After the PID of each stream is set in the output control unit, playback of the stream file is started. Specifically, the system control unit 113 instructs the drive control unit 106 to reproduce a stream corresponding to each play item included in the playlist. In the play item, a file name, a reproduction start time, and a reproduction end time of a stream file to be reproduced are described, and reproduction is performed based on this information. Further, the playback start time and playback end time are converted from the time information into packet numbers using the clip information file 404, and the packet number and sector number of the MPEG stream file 405 to start playback are obtained.

  The system control unit 113 obtains a reproduction sector on the optical disc from information such as the file name, sector number, and packet number of the MPEG stream file 405 obtained from the playlist file 403 and the clip information file 404, and sends data to the drive control unit 106. Instruct to play.

  The drive control unit 106 reproduces the data of the designated sector number and outputs the reproduced data to the output control unit 104. Here, the MPEG stream file 405 is a continuous recording of MPEG packets, but as shown in FIG. 5, a 4-byte packet header is added to the 188-byte MPEG packet. Of these, the packet output timing is controlled by using 30 bits as a time stamp for controlling the packet output time.

  Specifically, when each packet is recorded, a 30-bit counter value counted at 27 MHz is recorded as a time stamp in the packet header. At the time of reproduction, similarly, a 27-MHz 30-bit counter is prepared, the counter value is compared with the time stamp value in the packet header, and a packet is output when they match. Thereby, the packet can be output from the output control unit at the same timing as the packet interval at the time of recording.

  In addition to the output timing control described above, the output control unit 104 determines whether or not each packet can be output.

  In the MPEG stream file 405, a plurality of types of audio packets, a plurality of types of subtitle information packets, and the like are multiplexed in addition to video packets. The output control unit 104 is set with the PID of the audio packet, the PID of the caption information packet, and the PID of the video packet selected in the language selection procedure described above, so that the packet to be output is selected according to each PID. . That is, only the packet that matches the PID of the audio packet is output to the audio decoder 107, and only the packet that matches the PID of the caption information packet is output to the caption output unit 111. A packet that matches the PID of the video packet is output to the video decoder 109.

  The audio decoder 108 decodes the audio data included in the input audio packet, converts it into an audio signal, and outputs it to the audio signal output terminal 108. Similarly, the video decoder 109 decodes a video signal included in the input video packet, converts the video signal into a video signal, and outputs the video signal to the caption synthesizing unit 110. The subtitle output unit 111 outputs the subtitle information to the subtitle synthesis unit 110 in the video signal format in accordance with the subtitle information included in the subtitle information packet. The subtitle synthesizing unit 110 synthesizes the video signal output from the video decoder 109 and the video signal that is subtitle information output from the subtitle output unit 111, and outputs a video signal output terminal 112 as a video signal in which the subtitles are synthesized. To output.

  By the above procedure, each data reproduced from the optical disc is decoded, and a video signal including subtitles and an audio signal are output from the reproducing apparatus. At this time, the most appropriate language is selected as the sound and caption corresponding to the language designated by the user.

  The playback procedure in the playback apparatus according to the present invention has been described above.

  In the above-described embodiment, the optical disk is described as an example of the recording medium, but this is not limited. For example, a magnetic disk device such as a hard disk drive or a recording medium such as a semiconductor memory may be used. Furthermore, language selection can be performed in the same manner when a tuner that receives a broadcast is used instead of a recording medium. An object of the present invention is to perform control so that an optimal language is selected in language selection, and can be applied regardless of data reproduction means for performing language selection processing.

  Next, the operation when the optical disk according to the present invention is reproduced by a conventional reproducing apparatus will be described below. FIG. 10 shows the structure of the language setting register in the conventional playback apparatus.

  Unlike the language setting register of the present invention shown in FIG. 3, the conventional playback apparatus does not use the upper 8 bits. That is, language selection is performed using only the lower 24 bits.

  As a result of the language selection by the user, a three-character language code specified by ISO-639 is set in the lower 24 bits of the register. Since the upper 8 bits are unused, 0 is set.

  During disc playback, information excluding dialect codes is acquired from stream information in the playlist 403. Since the conventional playback apparatus cannot handle dialect codes, dialect code information is simply ignored.

  FIG. 11 shows a language selection procedure in the conventional playback apparatus. Here, it is assumed that the stream information recorded on the optical disc is as shown in FIG.

  In the flowchart shown in FIG. 11, when language selection is started (S1), it is determined whether there is a language corresponding to the user-specified language code (S2). Here, if there is no language corresponding to the language code designated by the user in the stream information (S3), the first language that appears in the stream information is selected, and the PID is used for stream selection. On the other hand, when the language of the language code designated by the user exists, the language designated by the user is selected and the PID is used for stream selection (S10).

  Language selection is performed by the above procedure.

  In the conventional playback device, even if the user wants to use Cantonese, there is no “Cantonese” in language selection and only “Chinese” is available. Therefore, the user will inevitably select Chinese. Since the Chinese is set in the language setting register (FIG. 10), the playback device searches the stream information in order from the stream information, and selects “Mandarin” of stream number 4 in FIG. As described above, even when the optical disk of the present invention is reproduced by the conventional reproducing apparatus, the selection can be automatically made to some extent. Of course, the user can also manually switch the streams as necessary, so that the user can view in Cantonese.

  As described above, no problem occurs even when the optical disk according to the present invention is reproduced by a conventional reproducing apparatus.

  Next, an operation when a conventional optical disk that does not include a dialect code is played back by the playback apparatus according to the present invention will be described. In the playback apparatus according to the present invention, language selection is performed according to the procedure shown in FIG.

  Since the conventional optical disc does not include a plurality of the same languages, only Mandarin is recorded in Chinese as shown in FIG. Note that the dial code is treated as 0 because the conventional optical disc does not include dialect code information.

  In the flowchart of FIG. 9, when the user has set the Cantonese language, the Mandarin language matches the language code set by the user in S2, so the process proceeds to S4. In S4, the dialect code is set for the language designated by the user, but the dialect code is not set in the subtitle information recorded on the optical disc. Proceed to In S6, since the dialect code is not set in the subtitle information recorded on the optical disc, it is treated as No. 0 and the process proceeds to S7. That is, Mandarin is selected and used for subtitle display. This is the same operation as when the user selects Chinese as the language setting, and the most appropriate language has been selected.

  Of course, when it is determined that a conventional optical disc has been inserted, the configuration can be similarly realized by performing the processing by switching to the language selection procedure shown in FIG.

  As described above, by using the language selection method according to the present invention, it is possible to record the languages of a plurality of dialects conventionally treated as the same language on the optical disc, and to select the most appropriate language. It becomes possible. In addition, the playback apparatus according to the present invention can select an optimal language even when an optical disc compatible with the conventional system is played back. Furthermore, even when the optical disk according to the present invention is reproduced by a conventional reproducing apparatus, it can be handled in the same manner as a conventional optical disk.

  In the above embodiment, the user sets the language to be used at the time of initial setting, but this is not limited. For example, a list of languages recorded on the optical disc can be displayed by acquiring the language code and dialect code included in the stream at the start of reproduction and converting the information into a language name. Specifically, the stream PID list shown in FIG. 8 may be converted into a language name using the table of FIG.

  In setting the language, it is also possible to acquire language information from an IC card or the like used for user identification and set it as the language used by the user. As a result, the language to be used is automatically set without the user being aware of the language setting, and the language is selected by the information selection method according to the present invention, so that a user-friendly playback device can be provided.

  Further, a method for producing a recording medium in the above embodiment and a method for recording information on the recording medium are also one aspect of the present invention.

Block diagram of playback device Correspondence example of language and dialect code Language setting register structure File structure on optical disc MPEG packet structure Recording structure of subtitle information PID and language code dialect code Recording structure of voice information PID and language code dialect code Correspondence between stream PID and language code Flow chart showing language selection procedure Traditional language setting register structure Flow chart showing a conventional language selection procedure Recording example of conventional stream PID and language code

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Optical disk, 102 ... Optical pick-up, 103 ... Reproduction signal processing circuit, 104 ... Output control part, 105 ... Servo, 106 ... Drive control part, 107 ... Audio decoder, 108 ... Audio | voice output terminal, 109 ... Video decoder, 110 ... Video composition unit 111 ... Subtitle output unit 112 ... Video output terminal 113 ... System control unit 114 ... Remote control reception unit 401 ... Disc information file 402 ... Menu display program file 403 ... Playlist file 404 ... Clip Information file, 405 ... stream file, 501 ... packet header, 502 ... MPEG packet, 503 ... sync byte, 504 ... PID, 505 ... data recording area, S1 ... start step, S2 ... language code determination step, S3 ... language mismatch stream Selection step, 4 ... dialect code matching judgment step, S5 ... dialect code matching stream selection step, S6 ... dialect code No. 0 determination step, S7 ... dialect code No. 0 stream selection step, S8 ... language code coincident stream selection step

Claims (11)

An information selection method for selecting information corresponding to a specified language from information corresponding to a plurality of different languages,
Each information has information language code and information dialect code,
Set the selected language code and selected dialect code to select information,
If the information language code matches the selected language code and there is information that matches the information dialect code and the selected dialect code, select the information that matches both,
If the information language code and the selected language code match, and there is no information that matches the information dialect code and the selected dialect code, and there is information that matches only the information language code and the selected language code, the information An information selection method, wherein control is performed so as to select information in which only a language code and a selected language code match. A playback device that selects and outputs information corresponding to a specified language from information corresponding to a plurality of different languages recorded on a recording medium,
Each information has information language code and information dialect code,
The user selects the language to make a selection,
Setting a selected language code and a selected dialect code for selecting information based on the language selected by the user;
If the information language code matches the selected language code and there is information that matches the information dialect code and the selected dialect code, select the information that matches both,
If the information language code and the selected language code match, and there is no information that matches the information dialect code and the selected dialect code, and there is information that matches only the information language code and the selected language code, the information Select information that matches only the language code and the selected language code,
A playback apparatus that controls to output information corresponding to a language selected by the information selection method. A playback device that selects and outputs information corresponding to a specified language from information corresponding to a plurality of different languages recorded on a recording medium,
Each information has information language code and information dialect code,
The user selects the language to make a selection,
A playback apparatus comprising: a register for setting a selected language code and a selected dialect code for selecting information based on the language selected by the user. The playback apparatus according to claim 3, wherein
The reproduction apparatus according to claim 1, wherein the register is 32 bits long. The playback apparatus according to claim 3, wherein
The register is 32 bits long and sets a selected language code in the lower 24 bits and sets a selected dialect code in the upper 8 bits. The playback device according to claim 5, wherein
The playback apparatus according to claim 1, wherein the selected language code is a language code defined in ISO-639. A recording medium that records information corresponding to a plurality of different languages,
A recording medium, wherein a language identification file in which a language code and a dialect code corresponding to each information are recorded is recorded on the recording medium. The recording medium according to claim 7,
Information to be recorded corresponding to a plurality of different languages is recorded in a packet format of a predetermined number of bytes, and a packet ID for determining the type of the packet is added to each packet,
A recording medium in which the packet ID is set differently for each language. The recording medium according to claim 8,
The language identification file records a correspondence between the packet ID, a language code, and a dialect code. A recording medium according to any one of claims 7 to 8, wherein
The language code is a language code defined in ISO-639. A recording medium according to any one of claims 7 to 8 to 9 to 10,
A recording medium characterized in that a standard dialect in each language is set to 0 in the dialect code.

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