JP3706491B2 - Information playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information reproducing apparatus for reproducing subtitles superimposed on video information and reproducing audio information related to the video information.
[0002]
[Prior art]
As the above information reproducing apparatus, for example, a DVD (Digital Versatile Disc) video player is known. A DVD is allowed to have up to 8 streams of audio information data (audio data) and up to 32 streams of character information data (sub-picture data) such as subtitles. Each stream is distinguished by attributes such as language (Japanese, English, French, etc.).
[0003]
The video player selects and reproduces one stream from the plurality of streams in accordance with the audio information attribute and the character information (caption) attribute set by the user. For example, when the attribute of the audio information is set to English and the attribute of the subtitle is set to Japanese by the viewer, the audio stream having the attribute English is selected from the eight audio streams and reproduced. A sub-picture stream having a Japanese attribute is selected from a sub-picture stream and reproduced.
[0004]
[Problems to be solved by the invention]
By the way, the conventional information reproducing apparatus selects an audio stream and a sub-picture stream to be reproduced in accordance with the attribute set by the user as described above, so that an unnatural situation occurs depending on the content of the video to be reproduced. . For example, if the user of the video player is Japanese, when watching a Japanese movie (a movie in which the main performer is Japanese and the main language of the conversation being exchanged is Japanese) Unless there is a reason, it is common to view the sound to be reproduced in Japanese without displaying subtitles. However, when a Japanese movie is played with the information playback device as described above, with the setting of the attribute of the sound to be played back in English and the attribute of the subtitles set in Japanese, the played back sound will be in English and the Japanese subtitles will be played back. Will be displayed.
[0005]
Therefore, there is an inconvenience that the attribute must be reset according to the content of information to be reproduced.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an information reproducing apparatus capable of reducing the troublesomeness of resetting audio and subtitle attributes for video information to be reproduced. It is in.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1Video information, a plurality of audio information related to the video information, a plurality of character information related to the video information, a plurality of language codes indicating the language of each of the audio information, and a language of each of the character information The information reproducing apparatus reproduces the video information, the audio information, and the character information from a recording medium on which a plurality of the language codes indicating the recording information are recorded, and stores the language code of the audio information. Storage means; second storage means for storing a language code of the character information; audio information reproduction means for reproducing one of the plurality of audio information; and among the plurality of character information, Recorded in the character information reproducing means for superimposing and reproducing the one character information on the video information, the language code acquired from the recording medium, the first storage means and the second storage means. And comparing means for determining whether or not they match, the preset language code is recorded in the first storage means and the second storage means, and When automatic selection reproduction for automatically reproducing audio information and the character information in a specific language is designated, the comparison unit is configured to store the plurality of language codes corresponding to the audio information acquired from the recording medium. It is determined whether or not the specific language code among them and the language code recorded in the first storage means match, and if they match, the reproduction of the character information is prohibited. And
[0008]
The invention according to claim 5 is a video information, a plurality of audio information related to the video information, a plurality of character information related to the video information, and a plurality of languages indicating the language of each of the audio information. An information reproducing apparatus for reproducing the video information, audio information, and character information from a recording medium in which a language code and a plurality of the language codes indicating the language of the individual character information are recorded as recording information, First storage means for storing a language code of voice information; second storage means for storing a language code of the character information; and voice information reproduction for playing back one of the plurality of voice information. Means, character information reproducing means for reproducing one of the plurality of character information superimposed on the video information, the language code acquired from the recording medium, and the first storage means Oh And a comparison unit that compares the language code recorded in the second storage unit and determines whether or not they match, and is preset in the first storage unit and the second storage unit. When the language code is recorded, and the automatic selection reproduction for automatically reproducing the audio information and the character information in a specific language is designated, the comparing means is configured to acquire the audio acquired from the recording medium. It is determined whether or not the specific language code of the plurality of language codes corresponding to the information matches the language code recorded in the second storage means. Characteristic information reproduction is prohibited.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the present invention will be described with reference to the drawings.
In this embodiment, an example will be described in which a disc conforming to the DVD video standard is adopted as the video disc.
[0029]
Before describing the information reproducing apparatus of the present invention in detail, first, an outline of the data structure according to the present invention of application data in the DVD video standard will be described with reference to FIG. 1 and FIG.
[0030]
As shown in FIG. 1A, application data includes one VMG (Video Mnager) and one or more VTSs (Video Title Set) for one volume.
[0031]
As shown in FIG. 1B, the VMG includes control information (VMGI (Video Manager Information)) for the entire volume, a VOB (Video Object) set for a title selection menu, and a VMGI backup.
[0032]
In addition, as shown in FIG. 1C, the VTS includes control information (VTSI (Video Title Set Information)) for the VTS, a VOB set (Video Object Set for Menu) for various menus in the VTS, It consists of a VOB set (Video Object Set for Title) for each title and a backup of VTSI. Each VOB set is a collection of real-time data such as video, audio, and subpicture.
[0033]
Here, the VTSI further includes a VTSI management table (VTSI MAT), a PTT (Part of Title) search pointer table (PTT SRPT), and a PGCI (Program Chain Information) table (see FIG. 1D). PGCIT), VTS menu cell address table (VTS C ADT), VTS VOB unit address map (VTS VOBU ADMAP), and the like. Since the boundary of each table needs to be a logical block boundary, the size of each table in VTSI is 2048 bytes.
[0034]
The attributes of real-time data used in the present invention are described in the VTSI management table in the VTSI. More specifically, as shown in FIG. 2, the number of audio streams (up to 8) with 2 bytes at addresses 514 and 515 in the VTSI management table (1 byte is assigned to each address). The audio stream attributes (language code (Japanese / English / French, etc.) and audio encoding mode (Dolby AC-3 / MPEG audio / linear) are 64 bytes from address 516 to address 579 and a maximum of 8 streams. PCM, etc.), audio application mode (karaoke / surround, etc.), quantization number (16 bits / 20 bits / 24 bits, etc.) are described in 8 bytes per stream.
[0035]
That is, attribute information about the audio stream number 1 (hereinafter referred to as ADS # n, where n is a stream number) is described in 8 bytes from address 516 to address 523, and address 524. Attribute information about ADS # 2 is described in 8 bytes from address 531 to address 531. Hereinafter, attribute information up to ADS # 8 is in units of 8 bytes depending on the number of streams described in addresses 514 to 515. It has been described.
[0036]
The number of sub-picture streams is described in 2 bytes at addresses 596 and 597, and the attributes (sub-picture coding mode, language code) of sub-picture streams having a maximum of 32 streams with 192 bytes from addresses 598 to 789. , Etc.) are described in 6 bytes per stream.
[0037]
That is, attribute information about subpicture stream number 1 (hereinafter referred to as SDS # n, where n is a stream number) is described in 6 bytes from address 598 to address 603, 604. The attribute information about SDS # 2 is described in 6 bytes from address to 609, and the attribute information up to SDS # 32 is described in 6-byte units according to the number of streams.
[0038]
Thus, by reading the information described at addresses 514 to 579 and addresses 596 to 789 in the VTSI management information table, the attributes (particularly language codes) of the audio stream and the sub picture stream can be detected.
[0039]
As shown in FIG. 2, the video stream attributes are given by 2 bytes at addresses 512 and 513 in the VTSI management information table. These attributes include the data compression method (MPEG1 / MPEG2), aspect ratio, bit rate. It is data relating to the specifications of video data such as country code and language code in which such video is produced.
[0040]
As described above, the attribute information of each data stream does not include information related to the production location of DVD recording information (content). However, regarding the audio stream, the audio stream No. 1 (ADS # 1) is conventionally used as the original language audio stream. That is, for example, if it is a Japanese movie, audio data in Japanese is recorded in ADS # 1. In the present invention, the language code of the original language that is conventionally recorded in the ADS # 1 is used as attribute information related to the production location of the content.
[0041]
Next, an information reproducing apparatus of the present invention for selectively reproducing an audio stream and a sub-picture stream from the above-described DVD will be described with reference to FIGS.
[0042]
FIG. 3 shows a specific configuration example of the information reproducing apparatus of the present invention.
In the information reproducing apparatus 100 shown in FIG. 3, the spindle motor 2 rotates the DVD 1 placed on a turntable (not shown) at a predetermined linear velocity based on a spindle control signal Sspd supplied from a servo controller 5 described later. .
[0043]
The pickup (PU) 3 irradiates the DVD 1 with the laser beam B, receives reflected light from the information recording surface of the DVD 1 of the laser beam B, and outputs an electric signal corresponding to the received light amount to the head amplifier (HA) 4. Output to.
[0044]
The head amplifier 4 performs a predetermined calculation on the electric signal supplied from the pickup 3 to generate a focus error signal Sfe and a tracking error signal Ste, and outputs the focus error signal Sfe and the tracking error signal Ste to the servo controller 5, and recording information formed on the DVD 1. An RF (Radio Frequenncy; high frequency) signal Srf including a diffracted light component by the pit row that bears the signal is generated and output to an A / D (Analog-to-Digital) converter 6.
[0045]
The servo controller 5 forms a servo loop in response to the servo control signal Ssvc from the CPU 10, and outputs a focus actuator drive signal Sfd based on the focus error signal Sfe supplied from the head amplifier HA4 to the focus actuator (not shown) of the pickup 3. And a tracking actuator drive signal Std based on the tracking error signal Ste is output to a tracking actuator (not shown) of the pickup 3. Further, the servo controller 5 detects the frequency difference and phase difference between the synchronization signal Ssync supplied from the RF decoder 7 and synchronized with the rotation of the disk 1 and a reference signal (not shown), and based on the frequency difference and phase difference. The spindle control signal Sspd is generated and supplied to the spindle motor 2.
[0046]
By the action of the servo controller 5, the laser beam B is accurately focused on the pit row carrying the recorded information while being focused on the recording surface of the DVD 1 which is rotationally driven at a predetermined linear velocity defined by the reference signal. Controlled to trace.
[0047]
On the other hand, the RF signal Srf supplied from the head amplifier 4 to the A / D converter 6 is converted into a digital RF signal Srfd and output to the RF decoder 7.
[0048]
The RF decoder 7 detects the synchronization signal Ssync from the supplied digital RF signal Srfd and outputs it to the servo controller 5, and also records, for example, 8/16 modulation performed on the recorded information on the DVD 1. Demodulation processing and error correction processing based on the modulation method are performed, and the digital RF signal Srfd is decoded into the recording information data stream Sdst having the data structure shown in FIG. 1 that carries video data, audio data, and sub-picture data. The recorded information data stream Sdst is output to the data decoder 8.
[0049]
Further, the RF decoder 7 extracts the above-described VTSI from the decoded recording information data stream Sdst and outputs it in response to a request from the CPU 10.
[0050]
The data decoder 8 extracts a video stream, an audio stream, and a sub-picture stream from the recording information data stream Sdst supplied from the RF decoder 7 and is based on a predetermined encoding method defined for each stream. Decoding processing is performed to generate video data, audio data, and sub-picture data.
[0051]
More specifically, the video stream Svst, the audio stream Sast, and the sub-picture stream Ssst are identified by the demultiplexer 81 from the recording information data stream Sdst supplied from the RF decoder 7, and the video stream Svst is sent to the video decoder 82. The audio stream Sast is distributed to the audio decoder 87, and the sub-picture stream Ssst is distributed to the sub-picture decoder 83 via the data bus 80, the memory controller 89, and the memory 9, respectively.
[0052]
The audio decoder 87 is supplied from the demultiplexer 81 based on the decoding control signal Sdas (stream number and encoding method (Dolby-AC3, MPEG audio, linear PCM) code) for the audio stream supplied from the CPU 10. Audio data is generated by decoding one of the audio streams of up to 8 streams, and output to a D / A converter (DAC) 88.
[0053]
The video decoder 82 decodes the video stream supplied from the demultiplexer 81 based on the decoding control signal Sdvs (encoding method (MPEG1, MPEG2) code) for the video stream supplied from the CPU 10 to perform video. Data Svd is generated and output to the mixer 84.
[0054]
Further, the sub picture decoder 83 is supplied from the demultiplexer 81 based on the decoding control signal Sdss (stream number and encoding method (run length compression) code) for the sub picture stream supplied from the CPU 10 at the maximum. Decoding processing of one of the 32 sub-picture streams is performed to generate sub-picture data Ssd, which is output to the mixer 84.
[0055]
As shown in FIG. 4, the mixer 84 includes an adder 841 and a switch 842. One input terminal of the adder 841 is supplied with video data Svd output from the video decoder 82, and an adder. The other input terminal 841 is connected to the output terminal of the switch 842. Sub-picture data Ssd output from the sub-picture decoder 83 is supplied to one input terminal (H terminal) of the switch 842, and the other input terminal (L terminal) of the switch 842 is grounded. A control input terminal of the switch 842 is supplied with a superimposition control signal Smxc, which will be described later, output from the CPU 10.
[0056]
With the above configuration, when the H-level superimposition control signal Smxc is supplied from the CPU 10, the mixer 84 outputs data obtained by superimposing the sub-picture data Ssd on the video data Svd to the encoder 85 as superimposed video data Smxv. When the L-level superposition control signal Smxc is supplied from the CPU 10, the video data Svd is output to the encoder 85 as the superposed video data Smxv without superimposing the sub-picture data Ssd on the video data Svd.
[0057]
The encoder 85 encodes the supplied superimposed video data Smxv into video format data conforming to a predetermined television system such as NTSC or PAL, and outputs it to a D / A converter (DAC) 86.
[0058]
The DAC 86 converts the supplied video format data into an analog signal and outputs it to a monitor (not shown).
[0059]
The CPU 10 outputs a servo control signal Ssvc to the servo controller 5 so as to make a playback state corresponding to the operation command supplied from the key switch 12 operated by the viewer. Further, each attribute information of the video data, audio data, and sub-picture data described at addresses 512 to 789 in the VTSI management information table is read from the VTSI of the data stream supplied from the RF decoder 7, and each attribute information The decoding control signals Sdas, Sdvs, Sdss and the superimposition control signal Smxc corresponding to the above are generated and output to the data decoder 8, and operation control mainly related to the information reproducing operation of the entire information reproducing apparatus 100 is performed.
[0060]
Further, the CPU 10 is provided with a RAM 11 as first and second storage means, and the CPU 10 has attribute information supplied from the key switch 12 to the RAM 11 and each of the information supplied from the RF decoder 7. Controls writing / reading of stream attribute information.
[0061]
With the above configuration, video data, sub-picture data, and audio data read from the DVD 1 are output from the information reproducing apparatus 100 as an analog video signal and an analog audio signal.
[0062]
Next, an audio stream and sub-picture stream automatic selection operation performed by the CPU 10 in the above configuration will be described with reference to FIG.
[0063]
In FIG. 5, it is assumed that the CPU 10 has already supplied the servo control signal Ssvc to the servo controller 5. In other words, it is assumed that the PU 3 can read the recorded information recorded on the DVD 1 by the spindle control, the focus control, and the tracking control by the servo controller 5 based on the servo control signal Ssvc.
[0064]
In such a state, the CPU 10 first performs initialization, and sets the address A0, which is the first storage means for storing the attributes of the audio stream to be reproduced in the RAM 11, and the attributes of the sub-picture stream (caption) to be reproduced. A language code (for example, English is used for the address A0 (audio stream) and Japanese is used for the A1 (sub-picture stream)) is set to the address A1, which is the second storage means for storing (step S1). .
[0065]
As a predetermined attribute (language code) used in step S8 when an automatic selection command is issued in step S7, which will be described later, the manufacturer of the information reproducing apparatus 100 at the time of shipping the information reproducing apparatus 100 (shipping destination ( A language code (for example, Japanese) corresponding to the country is stored in advance in the address A2 of the RAM 11.
[0066]
Next, it is determined whether or not the language code of the audio data to be reproduced is input by the viewer via the key switch 12 (step S2), and if not input (step S2; No). Shifts to step S6, and if it is input (step S2; Yes), the keyed language code is stored in the address A0 of the RAM 11 instead of the initial language code set in step S1. (Step S3).
[0067]
Similarly, it is determined whether or not the attribute (language code) of the subtitle to be reproduced is input via the key switch 12 (step S4). If not input (step S4; No), the step is performed. The process proceeds to S6, and if it is input (step S4; Yes), the language code input by the key is stored in the address A1 of the RAM 11 instead of the initial language code set in step S1 (step S4). S5).
[0068]
Next, the CPU 10 requests the RF decoder 7 to provide VTSI for the real-time data (VTS) on the DVD 1 currently read by the PU 3 (step S6).
[0069]
Next, the CPU 10 determines whether or not an automatic selection command is designated by the viewer via the key switch 12 (step S7). If not designated (step S7; No), the CPU 10 The language code of each audio stream described in addresses 516 to 579 of the VTSI management information table (VTSIMAP) supplied in S6 is compared with the language code stored in the address A0 of the RAM 11, and the address A0 is obtained. It is determined whether there is an audio stream (ADS) having a language code that matches the stored language code (step S17).
[0070]
In step S17, if ADS exists (step S17; yes), the audio control unit 87 outputs a decode control signal Sdas for selectively decoding the audio stream ADS # n determined to match as an audio stream to be reproduced. (Step S18).
[0071]
On the other hand, when it is determined in step S17 that no matching ADS exists (step S17; No), the audio decoder 87 is supplied with a decode control signal Sdas for selectively decoding ADS # 1 as an audio stream to be reproduced. Output (step S19).
[0072]
Next, the CPU 10 stores the language code of each sub-picture stream (SPDS) described in addresses 598 to 789 of the VTSI management information table (VTSIMAT) supplied in step S6, and the address A1 of the RAM 11 in step S8. The stored predetermined language code is compared to determine whether there is a matching sub-picture stream (step S20).
[0073]
If it is determined that it exists (step S20; Yes), the sub-picture decoder 83 receives a decode control signal Sdss that selectively decodes the sub-picture stream SPDS # n determined to match as a sub-picture data stream to be reproduced. Output (step S21).
[0074]
On the other hand, if it is determined in step S20 that no matching SPDS exists (step S20; No), the sub-picture decoder 83 uses the decode control signal Sdss that selectively decodes SPDS # 1 as a sub-picture stream to be reproduced. (Step S22).
[0075]
Then, the CPU 10 outputs an H-level superimposition control signal Smxc to the mixer 84 in order to superimpose the sub-picture data selected in step S21 or S22 on the video data as subtitles (step S23), and then by the viewer. To prepare for setting a new language code, the process proceeds to step S2.
[0076]
Through the above steps, when the automatic selection reproduction is not designated in step S7, that is, the setting relating to the selective reproduction operation according to the language code of the audio stream and the sub-picture stream set by the viewer, which is the prior art. Done.
[0077]
Next, the automatic selection / reproduction operation, which is a feature of the present invention, will be described.
When automatic selection reproduction is designated in step S7 (step S7; Yes), the CPU 10 determines the language code of the audio data stored in the address A0 of the RAM 11 and the subpicture stored in the address A1 in steps S2 to S5. The language code of the data is replaced with a predetermined language code stored at address A2 of the RAM 11. That is, the stored contents of the addresses A0 and A1 in the RAM 11 are updated so that the language code of the audio data and the language code of the sub picture data are the same language code (step S8). For example, in the case of an information reproducing apparatus manufactured for Japan and whose main viewer is considered to be Japanese, the predetermined language code is a language code corresponding to Japanese, and the addresses A0 and A1 of the RAM 11 are A language code corresponding to Japanese is stored.
[0078]
Next, the language code of audio stream number 1 (ADS # 1) stored at addresses 516 to 523 of the VTSI management information table (VTSIMAT) of VTSI provided at step S6 and the address A0 of the RAM 11 are stored. It is determined whether or not the language code, that is, the predetermined language code (Japanese in this embodiment) matches (step S9).
[0079]
If it is determined in step S9 that they match (step S9; Yes), the decoding control signal Sdas for selecting ADS # 1 as an audio stream to be reproduced is output to the audio decoder 87 (step S10). In order to prohibit superimposition of sub-picture data Ssd as subtitles on video data Svd, an L-level superposition control signal Smxc is output to the mixer 84 (step S11), and then a new language code is set by the viewer. Therefore, the process proceeds to step S2.
[0080]
Through the above steps (step S7 to step S11), the information reproducing apparatus 100 outputs the audio data recorded in the audio stream No. 1 of the DVD 1 as an audio signal and outputs a video signal on which no caption is superimposed. Will be.
[0081]
Conventionally, ADS # 1 is used as a source language audio stream for recorded information (for example, a movie). Therefore, in the present invention, as described above, the language code of ADS # 1 is an attribute related to the production location of the recorded information. It is used as information. For example, when the recorded information is a Japanese movie, the attribute of ADS # 1 is conventionally Japanese. Therefore, since the attribute of ADS # 1 matches the attribute stored in address A0 of RAM 11 in step S8, the audio decoder selectively decodes ADS # 1 whose attribute is Japanese and does not superimpose subtitles. It is automatically set as follows.
[0082]
In this way, if a language code corresponding to the native language of the main viewer is set as the predetermined language code, the language code of ADS # 1 is converted into the native language by the action of steps S7 to S11. If it matches the corresponding language code, the subtitle is not necessary, and its superimposition is prohibited.
[0083]
On the other hand, if it is determined in step S9 that they do not match (step S9; No), the CPU 10 is described in addresses 598 to 789 of the VTSI management information table (VTSIMAT) supplied in step S6. The language code of each sub-picture stream (SPDS) is compared with the predetermined language code stored in the address A1 of the RAM 11 in step S8 to determine whether there is a matching sub-picture stream (step S12). ).
[0084]
If it is determined that it exists (step S12; Yes), the decoding control signal Sdas for selecting ADS # 1 as the audio stream to be reproduced is output to the audio decoder 87 (step S13). A decoding control signal Sdss that selectively decodes the determined sub-picture stream SPDS # n as a sub-picture stream to be reproduced is output to the sub-picture decoder 83 (step S14).
[0085]
Then, in order to superimpose the sub-picture data selected in step S14 as subtitles on the video data, an H-level superposition control signal Smxc is output to the mixer 84 (step S15), and then a new language code by the viewer is displayed. To prepare for the setting, the process proceeds to step S2.
[0086]
Through the above setting operation, the audio data recorded on the ADS # 1 of the DVD 1 is output as an audio signal from the information reproducing apparatus 100, and the subtitles that match the attribute (language code) stored in the address A1 of the RAM 11 are output. Is output as a video signal.
[0087]
For example, if the recorded information is an American movie, the attribute of ADS # 1 is conventionally English, so it is different from the attribute (Japanese) stored at address A0 of RAM 11 in step S8. Therefore, the audio decoder automatically sets to selectively decode ADS # 1 whose attribute is English (the original language of the recording information) and superimpose subtitles whose attribute is Japanese.
[0088]
That is, in steps S9 to S15, the language code of ADS # 1 regarded as the original data audio data stream of the recorded information does not match the predetermined language code corresponding to the main language of the main viewer. The recorded information is determined so that a language different from the native language of the viewer is used as the original language of the recorded information, and the subtitles that are the native language of the viewer are superposed.
[0089]
On the other hand, if there is no sub-picture stream having a language code that matches the predetermined language code in step S12 (step S12; No), the automatic selection command specified in step S7 is canceled (step S16). The process proceeds to step S2 to perform selection based on the conventional setting operation.
[0090]
In the above description, the case where the predetermined attribute (language code) is stored in advance in the address A2 of the RAM 11 at the time of shipment of the information reproducing apparatus 100 has been described. However, the viewer can specify the predetermined attribute. It may be configured. In this case, even if the information reproducing apparatus is for a specific country (for example, Japan), automatic selection as described above is performed by setting a predetermined attribute to the viewer's native language (for example, English). . That is, automatic selection reproduction according to the present invention is possible regardless of the shipping destination (the country in which the viewer uses the information reproducing apparatus 100).
[0091]
In the above description, when an automatic selection command is issued in step S7, an example has been described in which the stored contents of the first storage means and the second storage means in step S8 are replaced with a predetermined language code. If the person intends to perform the automatic selection operation from the beginning, the predetermined language code can be stored in advance in the language code setting operation in steps S2 to S5. In this case, step S8 can be omitted.
[0092]
In the above description, the example in which the language code stored in the address A0 of the RAM 11 serving as the first storage means is compared with the language code of ADS # 1, but as described above, in the automatic selection operation, Since the language code set for the audio stream and the language code set for the sub picture stream are the same language code, the language code stored at the address A1 of the RAM 11 as the second storage means, That is, the same effect can be expected even when the language code set for the sub-picture stream is compared with the language code of ADS # 1.
[0093]
Further, in the above description, by using the fact that ADS # 1 is customarily used as a source language audio stream for recorded information, the language code stored in RAM 11 as a predetermined language code is used as the language code of ADS # 1. However, if it is possible to arrange in advance between the producer of the recorded information and the manufacturer of the information reproducing apparatus 100, an audio stream for the original language related to the recorded information can be assigned to another stream number. The recorded language code may be used as a predetermined language code.
[0094]
In the above description, a disc conforming to a DVD recording format, that is, a disc conforming to a format in which original language information of recording information is not recorded is taken as an example, but conforming to a format in which original language information can be recorded in advance. In the case of a recording medium, the recorded original language information may be used as the predetermined language code.
[0095]
In the above description, an example of automatically selecting and reproducing recorded information recorded on a recording medium (DVD) has been described. However, the present invention can be applied even when the recorded information is transmitted in a wired or wireless form. It is possible to apply.
[0096]
【The invention's effect】
As described above, according to the information reproducing apparatus of the present invention, the language code which is the attribute information of ADS # 1 which is conventionally used as the original language audio stream related to the recorded video information is used as the original language audio stream. The predetermined language code is compared with the language code stored in the first storage means, and if they match, subtitles are prohibited from being superimposed on the video information.
[0097]
That is, when the attribute corresponding to the viewer's native language is stored in the first storage means, the information to be reproduced (for example, a movie, etc.) is produced mainly in the viewer's native language. The audio information of the audio information stream carrying the original language is automatically reproduced, and the superimposition of subtitles on the video information is automatically prohibited. Therefore, there is an effect that the troublesomeness of resetting the attribute can be reduced according to the content of the information to be reproduced.
[Brief description of the drawings]
FIG. 1 is a diagram showing a data structure of application data recorded on a DVD.
FIG. 2 is a diagram showing a VTSI information management table in a DVD.
FIG. 3 is a diagram showing an overall block configuration of an information reproducing apparatus 100 according to the present invention.
4 is a diagram showing a specific configuration of a mixer 84 in FIG. 3. FIG.
FIG. 5 is an operation flowchart related to the automatic selection operation of the CPU 10 in FIG. 3;
[Explanation of symbols]
1 ... DVD
7 ... RF decoder
8 ... Data decoder
82 ... Video decoder
83… Sub-picture decoder
84… Mixer
841 ... Adder
842 ... Switch
87… Audio decoder
10 ... CPU
11: RAM as first storage means and second storage means
12 ... Key switch
ADS… audio stream
SPDS… Sub-picture stream
Smxc… Superimposition control signal
Sdas… Audio decode control signal
Sdss… Sub picture decode control signal

Claims (5)

And video information, a plurality of audio information related to the video information, a plurality of character information related to the video information, a plurality of language code indicating the language of each of the voice information, the language of each of the character information An information reproducing apparatus for reproducing the video information, audio information, and character information from a recording medium on which a plurality of language codes indicating the recording information are recorded,
First storage means for storing the language code of the audio information,
Second storage means for storing the language code of the text information,
Among the plurality of audio information, the audio information reproducing means for reproducing an the audio information,
Among the plurality of character information, and character information reproducing means for reproducing by superimposing one of the character information on the video information,
A comparison unit that compares the language code acquired from the recording medium with the language code recorded in the first storage unit and the second storage unit, and determines whether or not they match.
Equipped with a,
The language code set in advance is recorded in the first storage means and the second storage means, and automatic selection playback for automatically playing back the voice information and the character information in a specific language is designated. When
The comparing means matches a specific language code of the plurality of language codes corresponding to the audio information acquired from the recording medium and the language code recorded in the first storage means. Determine whether to
An information reproducing apparatus characterized by prohibiting reproduction of the character information when they match .   The comparing means matches a specific language code of the plurality of language codes corresponding to the audio information acquired from the recording medium and the language code recorded in the first storage means. Determine whether to
  The information reproducing apparatus according to claim 1, wherein the specific audio information is reproduced if they do not match.   The comparing means matches a specific language code of the plurality of language codes corresponding to the audio information acquired from the recording medium and the language code recorded in the first storage means. Determine whether to
  If they do not match, whether there is a code that matches the language code recorded in the second storage means among the plurality of language codes corresponding to the character information acquired from the recording medium 3. The character information corresponding to the language code recorded in the second storage means is reproduced when there is a match and a determination is made. Information playback device.   4. The information reproducing apparatus according to claim 1, wherein the specific language code is the audio information of stream number 1 among the plurality of audio information. 5.   Video information, a plurality of audio information related to the video information, a plurality of character information related to the video information, a plurality of language codes indicating the language of each of the audio information, and a language of each of the character information An information reproducing apparatus for reproducing the video information, audio information, and character information from a recording medium on which a plurality of language codes indicating the recording information are recorded,
  First storage means for storing a language code of the voice information;
  Second storage means for storing a language code of the character information;
  Audio information reproducing means for reproducing one of the plurality of audio information;
  Character information reproducing means for reproducing one of the plurality of character information by superimposing the character information on the video information;
  A comparison unit that compares the language code acquired from the recording medium with the language code recorded in the first storage unit and the second storage unit, and determines whether or not they match.
  With
  The language code set in advance is recorded in the first storage means and the second storage means, and automatic selection playback for automatically playing back the voice information and the character information in a specific language is designated. When
  The comparing means matches a specific language code of the plurality of language codes corresponding to the audio information acquired from the recording medium and the language code recorded in the second storage means. The information reproducing apparatus is characterized by determining whether or not to perform the reproduction and prohibiting the reproduction of the character information if they match.

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