JP2003173621A - Device and method to reproduce dvd audio - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DVD audio reproducing device and a method in which RTI data in a DVD audio standard are efficiently reproduced. <P>SOLUTION: The DVD audio reproducing device is provided with an input processing section 101 which separates PTS 106, reproducing control information 107 and RTI data 108 from real time text information (RTI) that is read from a DVD audio disk and stores them into an RTI buffer 103, an external input section 120, an RTI data display setting memory 119 which freely changes display position or the like of the RTI data by the section 120 and an RTI decoding section 111 which conducts a decoding process of the RTI data based on the value of the memory 119. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

The present invention relates to a DVD (Digital
Versatile Disc) audio reproducing apparatus and DVD audio reproducing method, in particular, a method different from the conventional method
DVD playing TI (Real time Text Information)
The present invention relates to an audio reproducing device and a DVD audio reproducing method.

[0002]

2. Description of the Related Art In recent years, media in which image signals, audio signals, and additional information signals such as caption information are digitally encoded and multiplexed, as seen in DVDs, are rapidly becoming popular. A standard for performing such multiplexed digital encoding has been proposed as a DVD standard in the DVD Forum. The DVD Forum is a group of companies aiming to standardize the DVD standard. Among the DVD standards, the DVD video standard has been defined as a standard for digitally encoding a moving image signal, and accompanying audio signals and additional information signals. However, since the DVD video standard causes deterioration of audio, a DV of a higher quality digital audio standard is used.
The D audio standard has been proposed. On a DVD audio disc based on the DVD audio standard, audio information is recorded as tracks for each song, and each audio and track is composed of audio data and real time text information (hereinafter referred to as RTI). .

The RTI is a standard specific to the DVD audio standard for recording text data on a DVD audio disk as a character code. The recording method using the RTI standard differs from the conventional method of recording the characters in the sub-picture of the DVD video standard, such as the subtitles of karaoke, in the bitmap format, and is characterized in that the recording capacity can be significantly reduced. is there. However, the DVD audio reproducing apparatus having the RTI data reproducing function (whether or not having this function is optional) is synchronized with the reproduction of the audio data based on the display time information of each data.
It is necessary to provide a mechanism for synchronously reproducing data and video data.

FIG. 2 shows a display example of RTI data. FIG. 2A is an example when a single-byte character is used. According to the DVD audio standard, in this case, it is possible to display 30 characters × 4 lines. Further, FIG. 2B is an example when a double-byte character is used. In this case 1
It is possible to display 5 characters x 2 lines. When this RTI data is reproduced, an image in which the RTI data and image data are combined is displayed on the display.

FIG. 3 is an explanatory diagram of a bit stream (hereinafter, referred to as a multi-coded stream) input when reproducing RTI data. FIG. 3A shows the structure of a pack and a packet, which are basic units of multiplexing, of individual streams such as digitally encoded images and sounds and additional information.

The pack 301 is composed of a pack header 307a added at the beginning and a packet 302.
Further, at the beginning of the packet 302, a packet start code prefix code 30 which is a synchronization signal indicating the beginning of the packet
3. Packet identifier 304 (stream_id in the MPEG standard) for distinguishing audio and video packets, packet length information 305, synchronous playback information (Presentation T) of video and audio
A packet header 307b including an ime Stamp (hereinafter referred to as PTS) 306 is added. Although FIG. 3A shows an example in which the pack 301 includes one packet 302, the pack 301 may include a plurality of packets 302. Figure 3
The detailed structure of the RTI pack is shown in (b). The RTI pack has the pack header 307a, the packet start code prefix code 303, and the packet identifier 3 as described above.
04, packet length 305, PTS 306, and RTI data 307c. Also, RTI data 30
7c is composed of encoded data 308 and reproduction control information 309. Reproduction control information 309 is language code 3
10a, character set code 310b, text length 310
c, repeat flag 310d, and maximum display time 310
e is included. The language code 310a is a language code defined by the DVD video standard. Character set code 3
10b indicates whether the character information includes double-byte characters, that is,
Indicates whether the character information contains only single-byte characters or double-byte characters. The text data length 310c is the data length of character information, the repeat flag 310d is a flag indicating whether the RTI data is the same as the previous time, and the maximum display time 31.
0e represents the maximum display time of the RTI data. Further, one RTI packet 302 can include a maximum of eight pieces of RTI data 307c.

Next, a conventional method of decoding RTI data will be described with reference to FIG. RTI data is RTI
The encoded data 308 of the packet and the reproduction control information 309 convert the character code into a bit map data in a corresponding language, and a decoding process is performed so as to display and reproduce based on the PTS information.

FIG. 4 is a block diagram of a conventional DVD audio reproducing apparatus. In the figure, 401 is an input processing unit, 40
2 is a buffer memory, 403 is an RTI buffer, 404
Is a video buffer, 405 is an audio buffer, 40
6 is an RTI decoding unit, 407 is a video decoding unit, 408 is an audio decoding unit, 409 is an RTI output buffer, 410
Is a video output buffer, 411 is an audio output buffer, and 412 is a mixer.

The operation of the conventional DVD audio reproducing apparatus will be described below. The stream data read from the DVD audio disc is transferred to the input processing unit 401 after error correction and demodulation, and RTI, video,
After separating into audio data, each buffer memory 402
(RTI buffer 403, video buffer 404, audio buffer 405). After being stored in the buffer memory, the RTI, video, and audio data are respectively decoded by the respective decoding units (RTI decoding unit 406, video decoding unit 407, and audio decoding unit 408) so that they can be reproduced synchronously with the video and audio at a desired time. It is decoded and temporarily stored in each output buffer (RTI output buffer 409, video output buffer 410, audio output buffer 411). Then, the video and RTI data stored in the output buffer are mixed by the mixer 412, and then the video signal and the audio signal are output.

[0010]

However, the conventional DVD audio reproducing apparatus and DVD audio reproducing method have the following problems. The conventional model proposed in the DVD audio standard does not have a specific decoding method for synchronously reproducing RTI data when reproducing audio and video, and simply inputs the multiple encoded streams individually. After separating into pack and packet data, it is temporarily stored in the buffer memory,
Only the decoding processing is performed by the decoding unit and the video signal and the audio signal are output. That is, how to use the buffer memory to decode the RTI data,
Since no specific decoding method using the TI buffer memory is provided, there is no method for synchronizing RTI data with video and audio signals.

Further, if the RTI data is stored in the RTI buffer memory, the capacity of the RTI buffer memory is exceeded, and it becomes impossible to perform the decoding process of the RTI data. Further, when decoding the RTI data, it is necessary to provide a character code table corresponding to the language code of the RTI data for all the language codes, and the memory capacity for storing the external character code becomes enormous.

Further, there is no decoding processing method when the corresponding language code cannot be prepared, and there is a possibility of hang-up during DVD audio reproduction.

Further, there is no processing method when the PTS of the RTI data, the reproduction control information, and the RTI data include some error. Further, according to the DVD audio standard, there is no regulation concerning the display position of RTI data, so at which position on the screen the character information shown in FIG. 2 should be displayed, and at what size should it be displayed? However, there is a problem that depending on the playback device, it cannot be displayed at a position convenient for the user.

There is also a problem that the display of the RTI data causes the main image to overlap with the main image, making it difficult to see both the main image and the RTI data.

The present invention has been made to solve the above problems, and an object thereof is to provide a DVD audio reproducing apparatus and a reproducing method for efficiently reproducing RTI data in the DVD audio standard. To do.

Further, a DVD audio reproducing apparatus which does not hang up when an error is included in the RTI data and which can display the display position of the RTI data, the display color and the like according to the user's setting. , And a DVD audio reproducing method.

[0017]

In order to solve the above problems, a DVD audio reproducing apparatus according to the present invention (Claim 1) is such that audio, video, real-time text information, additional information, etc. are based on the DVD audio standard. A DVD audio reproducing apparatus for reproducing a multiplex encoded stream which is digitally encoded according to
The multiple encoded stream includes a plurality of packs, each of the plurality of packs includes at least one packet, the packet includes a packet header and encoded data, and the encoded data is packet voice encoded data,
A packet language coded data or packet real-time text information coded data is included, and from the packet including the real-time text information coded data, the language of the real-time text information coded data and the real-time text information Code, character set code, text data length, repeat flag,
And reproduction control information including the maximum display time and the display time information in the packet header are separated, and the real-time text information encoded data is decoded based on the information separated by the input processing unit. And a real-time text information decoding unit that does.

A DVD audio reproducing apparatus according to the present invention (Claim 2) is the DVD audio reproducing apparatus according to Claim 1, wherein the input processing unit is separated from the real-time text information code by the input processing unit. Data, reproduction control information of the real-time text information, and display time information of the real-time text information are stored in a storage device as one data format of the real-time text information, and the real-time text information decoding unit is configured to store the real-time text information in the storage device. Is for decoding the real-time text information encoded data stored in.

Further, a DVD audio reproducing apparatus according to the present invention (Claim 3) is the DVD audio reproducing apparatus according to Claim 2, wherein by the time of the display time information in the packet header of the video coded data. A video decoding unit for decoding the coded video data, and an audio decoding unit for decoding the coded audio data by the time of the display time information in the packet header of the coded audio data, The real-time text information decoding unit includes, in the reproduction control information, text encoded data included in the real-time text information encoded data stored in the storage device, based on the display time information stored in the storage device. The text data length of the real-time text information and the external character code table Image processing, the video data decoded by the video decoding unit and the real-time text information data decoded by the real-time text information decoding unit are combined by a mixer, and then decoded by the audio decoding unit. The audio data is output to the outside at the time of the display time information.

The DVD audio reproducing apparatus according to the present invention (Claim 4) is the DVD audio reproducing apparatus according to Claim 3, wherein the external character code table used when decoding the real-time text information encoded data is used. It is provided with means for changing the character code table of the language used in a specific country or region.

Further, a DVD audio reproducing apparatus according to the present invention (Claim 5) is the DVD audio reproducing apparatus according to Claim 3, in which the external character code table used by the real-time text information decoding unit for decoding processing is stored. When an external character code table storage unit, an external character code table storage device that stores a plurality of external character code tables, and the real-time text information decoding unit decodes the real-time text information from the external character code table storage device. And a control means for downloading only the external character code table used for the above into the external character code table storage unit.

A DVD audio reproducing apparatus according to the present invention (Claim 6) is the DVD audio reproducing apparatus according to Claim 3, which stores the external character code table used by the real-time text information decoding unit for decoding processing. When an external character code table storage unit, an external character code table storage device that stores a plurality of external character code tables, and the real-time text information decoding unit decodes the real-time text information from the external character code table storage device. And a control means for downloading only the external character code table to be used once in the external character code table storage section, wherein the input processing section downloads a character code other than the external character code table downloaded by the control means. The real-time text information encoding data of the real-time text information used When the reproduction control information of the real-time text information is the display time information of the real-time text information which is not stored in the storage device.

Further, a DVD audio reproducing apparatus according to the present invention (Claim 7) is the DVD audio reproducing apparatus according to Claim 3, wherein the screen display position and display of the real time text information encoded data are output. Real-time text information data display setting memory for presetting size, display color, and presence / absence of display,
The real-time text information decoding unit is configured to perform the real-time text information code according to the screen display position, the display size, the display color, and the presence / absence of the display set in the real-time text information data display setting memory. The encoded data is decoded into a video signal.

A DVD audio reproducing apparatus according to the present invention (Invention 8) is the DVD audio reproducing apparatus according to Claim 7, wherein the real-time text information data display setting memory displays the real-time text information encoded data as an image. An initial value for setting the screen display position at the time of outputting, the size of the display, the color of the display, and the presence or absence of the display is provided.

The DVD audio reproducing apparatus according to the present invention (Claim 9) is the DVD audio reproducing apparatus according to Claim 7, wherein the real-time text information decoding unit corresponds to the image output format of the video coded data. Then, the real-time text information encoded data is decoded so as to change the display method of the real-time text information data.

A DVD according to the present invention (claim 10)
The audio reproducing apparatus is the DVD audio reproducing apparatus according to claim 7, wherein the real-time text information decoding unit displays a video signal in which the image output format of the video encoded data is 16: 9 on a screen whose display unit is 4: 3. When outputting, the real-time text information data is subjected to data code processing so that the real-time text information encoded data is output to a dark portion at the top or bottom of the screen.

A DVD according to the present invention (claim 11)
The audio reproducing apparatus is the DVD audio reproducing apparatus according to claim 7, wherein the real-time text information decoding unit displays a video signal in which the image output format of the video encoded data is 4: 3 on a screen whose display unit is 16: 9. When outputting, for the language in which the real-time text information data allows vertical writing, the real-time text information encoding is performed so that the real-time text information data is output vertically to the dark portion on the left side or the right side of the screen. The data is decoded.

A DVD according to the present invention (claim 12)
The audio reproducing apparatus according to claim 7, wherein the real-time text information decoding unit outputs the image of the video coded data as Visual.
When the fade-in or the fade-out is performed by the l Effect, the real-time text information data is faded in or out like the image output, or the Visual Effec.
The real-time text information encoded data is decoded so as to be output without t.

A DVD according to the present invention (claim 13)
The audio reproducing apparatus according to claim 7, further comprising an external input unit for inputting an instruction to change a setting value of the real-time text information data display setting memory.

A DVD according to the present invention (claim 14)
The DVD audio reproducing apparatus according to claim 13, wherein the external input unit displays the real-time text information data in a vertical writing or horizontal writing image according to an external input. The setting value of the information data display setting memory is changed.

A DVD according to the present invention (claim 15)
The audio reproducing apparatus is the DVD audio reproducing apparatus according to claim 13, wherein when the external input unit outputs a video signal in which the image output format of the video encoded data is 16: 9 to a 4: 3 screen, According to an input from the outside, the set value of the real-time text information data display setting memory is changed so that the real-time text information data is output to the dark part at the top or bottom of the screen.

A DVD according to the present invention (claim 16)
The audio reproducing apparatus is the DVD audio reproducing apparatus according to claim 13, wherein when the external input unit outputs a video signal in which the image output format of the video encoded data is 4: 3 to a 16: 9 screen, For the language in which the real-time text information data allows vertical writing, the real-time text information data is output vertically to the dark portion on the left side or the right side of the screen according to an input from the outside. The setting value of the text information data display setting memory is changed.

A DVD according to the present invention (claim 17)
The DVD audio reproducing apparatus according to claim 13, wherein the external input unit receives an external input when the image output of the video coded data is output by fade-in or fade-out by Visual Effect. According to the above, the real-time text information data is faded in or out like the image output, or the Visual Ef
The setting value of the real-time text information data display setting memory is changed so as to output without the fact.

A DVD according to the present invention (claim 18)
3. The DVD audio reproducing apparatus according to claim 2, wherein the input processing unit is separated by the input processing unit when the storage device is filled with real-time text information separated by the input processing unit. The new real-time text information is overwritten on the old real-time text information already stored in the storage device and stored in the storage device.

A DVD according to the present invention (claim 19)
The audio reproducing apparatus according to claim 1, wherein when the reproduction control information of the real-time text information separated by the input processing unit or the real-time text information encoded data includes an error, The error processing unit is provided so as not to display the real-time text information.

A DVD according to the present invention (claim 20)
The DVD audio reproducing apparatus according to claim 1, wherein the reproduction control information of the real time text information separated by the input processing unit or the real time text information encoded data includes an error, The real-time text information is provided with an error processing unit that displays an error in the video.

A DVD according to the present invention (claim 21)
The DVD audio reproducing apparatus according to claim 1, wherein the audio reproducing apparatus does not display the real time text information when the display time information of the real time text information separated by the input processing unit includes an error. It has an error processing unit for

A DVD according to the present invention (claim 22)
The DVD audio reproducing apparatus according to claim 7, wherein the real-time text information display setting memory includes the reproduction control information or the real-time text information encoded data of the real-time text information separated by the input processing unit. When an error is included in the item, an external input unit is provided for inputting an instruction for setting whether or not to display the error in the real-time text information in the video output.

A DVD according to the present invention (claim 23)
The audio reproducing method is a DVD audio reproducing method in which audio, video, real-time text information, additional information, and the like are digitally encoded based on the DVD audio standard, and a multiplexed encoded stream multiplexed in packet units is reproduced. The multiple coded stream includes a plurality of packs, each of the plurality of packs includes at least one packet, the packet includes a packet header and packet coded data, and the packet coded data is packet voice coded. Data, packet video coded data, or packet real-time text information coded data is included, and from the packet containing the real-time text information coded data, the real-time text information coded data and the real-time text information ,language Mode, character set code, text data length, repeat flag, and display control information including maximum display time, and display time information in the packet header, and an input processing step for separating the display time information and the input processing step. And a real-time text information decoding step of decoding the real-time text information encoded data based on the information.

A DVD according to the present invention (claim 24)
24. An audio reproducing method according to claim 23, wherein said input processing step comprises said real-time text information encoded data separated in said input processing step, reproduction control information of said real-time text information, A data storage step of storing the display time information of the real-time text information in a storage device as one data format of the real-time text information; and the real-time text information decoding step,
The real-time text information encoded data stored in the storage device in the data storing step is decoded.

A DVD according to the present invention (claim 25)
The DVD audio reproducing method according to claim 24, wherein the text included in the real-time text information encoded data stored in the data storing step is based on the display time information stored in the data storing step. In the real-time text information decoding step of decoding the encoded data using the text data length of the real-time text information included in the reproduction control information and an external character code table, and in the packet header of the video encoded data. A video decoding step of decoding the encoded video data by a certain display time information, and decoding the encoded audio data by the display time information in the packet header of the encoded audio data Audio decoding step, After the video data decoded in the video decoding step and the real-time text information data decoded in the real-time text information decoding step are combined in a mixer, the data is decoded together with the audio data decoded in the audio decoding step. The step of externally outputting the time of the display time information is included.

A DVD according to the present invention (claim 26)
26. The DVD audio reproducing method according to claim 25, wherein the external character code table used in the real-time text information decoding step is changed to a character code table of a language used in a specific country or region. Is included.

A DVD according to the present invention (claim 27)
The DVD audio reproducing method according to claim 25, wherein only the external character code table used for decoding the real-time text information from an external character code table storage device that stores a plurality of external character code tables is used. Is downloaded to the external character code table storage unit that stores the external character code table used in the decoding process in the real-time text information decoding step.

A DVD according to the present invention (claim 28)
26. The DVD audio reproducing method according to claim 25, wherein only the external character code table used for decoding the real-time text information from an external character code table storage device that stores a plurality of external character code tables is used. Includes a download step of downloading once to an external character code table storage unit that stores the external character code table used in the decoding process in the real-time text information decoding step, and in the data storing step of the input processing step, the download The real-time text information encoded data of real-time text information using a character code other than the external character code table downloaded in step, reproduction control information of the real-time text information, and the real-time text One that does not store the broadcast display time information in the storage device.

A DVD according to the present invention (claim 29)
26. The DVD audio reproduction method according to claim 25, wherein the screen display position, the display size, the display color, and the presence / absence of the display are set when the real-time text information encoded data is output as an image. Real-time text information data display setting step, wherein the real-time text information decoding step comprises the screen display position, the display size, the display color, and the display set in the real-time text information data display setting step. The real-time text information encoded data is decoded into a video signal in accordance with the display setting of presence or absence of.

A DVD according to the present invention (claim 30)
30. The DVD audio reproducing method according to claim 29, wherein in the real-time text information data display setting step, the screen display position, the display size when the real-time text information encoded data is output as a video, The set value of the display color and the display setting of the presence or absence of the display are set as initial values which are previously held.

A DVD according to the present invention (claim 31)
30. The DVD audio reproducing method according to claim 29, wherein the real-time text information decoding step changes the display method of the real-time text information data according to an image output format of the video encoded data. The real-time text information encoded data is decoded.

A DVD according to the present invention (claim 32)
30. The DVD audio reproducing method according to claim 29, wherein in the real-time text information decoding step, a video signal of an image output format of the video encoded data of 16: 9 is displayed on a screen of 4: 3 on the display unit. When outputting, the real-time text information data is decoded so that the real-time text information encoded data is output to a dark part at the top or bottom of the screen.

A DVD according to the present invention (claim 33)
30. The DVD audio reproducing method according to claim 29, wherein in the real-time text information decoding step, a video signal having an image output format of the video encoded data of 4: 3 is displayed on a screen of 16: 9 on the display unit. When outputting, for the language in which the real-time text information data allows vertical writing, the real-time text information code so that the real-time text information data is output vertically to the dark portion on the left side or the right side of the screen. The decoded data is decoded.

A DVD according to the present invention (claim 34)
30. The DVD audio reproducing method according to claim 29, wherein said real-time text information decoding step outputs V as image data of said video encoded data.
When the image is output by fading in or out by the visual effect, the real-time text information data is faded in or out like the image output, or by the Visual E
The real-time text information encoded data is decoded so as to be output without any effect.

A DVD according to the present invention (claim 35)
30. The DVD audio reproducing method according to claim 29, wherein the real-time text information data display setting step is performed in response to an external input.
It includes an external input step for changing the set value of the display of the real-time text information data.

A DVD according to the present invention (claim 36)
The audio reproducing method is the DVD audio reproducing method according to claim 35, wherein the external input section step displays the real-time text information data in a vertical or horizontal writing mode in accordance with an input from the outside. The setting value of data display is changed.

A DVD according to the present invention (claim 37)
The audio reproducing method is the DVD audio reproducing method according to claim 35, wherein in the external inputting step, when outputting a video signal in which a video output format of the video coded data is 16: 9 to a 4: 3 screen, According to the input from the outside, the real-time text information data,
The setting value of the display of the real-time text information data is changed so that it is output to the dark part at the top or bottom of the screen.

A DVD according to the present invention (claim 38)
The audio reproducing method is the DVD audio reproducing method according to claim 35, wherein in the external inputting step, when outputting a video signal in which a video output format of the video encoded data is 4: 3 to a 16: 9 screen, In response to an external input, for the language in which the real-time text information data allows vertical writing, the real-time text information is output vertically to the dark portion on the left or right side of the screen. The setting value of the display of the information data is changed.

A DVD according to the present invention (claim 39)
The audio reproducing method is the DVD audio reproducing method according to claim 35, wherein in the external inputting step, the image output of the video coded data is a visual effect.
When the image is output by fading in or out by ct, the real-time text information data is faded in or out in the same manner as the image output according to an input from the outside, or is displayed as Visual.
The setting value of the display of the real-time text information data is changed so that it is output without any effect.

A DVD according to the present invention (claim 40)
The DVD audio reproducing method according to claim 24, wherein the input processing step is performed when the storage device stored in the data storing step is filled with real-time text information separated in the input processing step, The new real-time text information separated in the input processing step is stored in the storage device by overwriting the old real-time text information already stored in the storage device.

A DVD according to the present invention (claim 41)
The DVD audio reproducing method according to claim 23, wherein when the reproduction control information or the real time text information encoded data of the real time text information separated in the input processing step includes an error, It includes an error processing step of not displaying the real-time text information.

A DVD according to the present invention (claim 42)
24. The DVD audio reproducing method according to claim 23, wherein when the reproduction control information of the real time text information separated in the input processing step or the real time text information encoded data includes an error, It includes an error processing step for displaying on a video that there is an error in the real-time text information.

A DVD according to the present invention (claim 43)
24. The DVD audio reproducing method according to claim 23, wherein the real time text information is not displayed when the display time information of the real time text information separated in the input processing step includes an error. It includes an error processing step to execute.

A DVD according to the present invention (claim 44).
30. The DVD audio reproducing method according to claim 29, wherein the real-time text information display setting step is the reproduction control information of the real-time text information separated in the input processing step or the real-time text information encoded data. If an error is included in the item, an external input step is performed in accordance with an input from the outside to set whether or not to display the error in the real-time text information in the video output.

[0061]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) A DVD audio reproducing apparatus according to Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 shows a D according to the first embodiment of the present invention.
It is a figure which shows the structure of a VD audio reproducing apparatus. Figure 1
In 101, 101 is read from a DVD audio disc, an error-corrected and demodulated multiple coded stream is input, and audio data, video data, RTI data, etc. are separated for each packet using each pack and packet header. Is a buffer memory for temporarily storing separated audio data, video data, and RTI data, 103 is an RTI buffer, 104 is a video buffer, and 105 is an audio buffer. 1
06 is the PTS of the data stored in the RTI buffer, 1
Reference numeral 07 is reproduction control information of the data stored in the RTI buffer, and 108 is RT of the data stored in the RTI buffer.
I data. Reference numeral 109 denotes an external character code table storage unit that stores an external character code table that is a table that converts character codes that are RTI data into screen information, and 110 denotes an external character code table storage device that stores a plurality of external character code tables, 11
1 is an RTI decoding unit, 112 is a video decoding unit, 113 is an audio decoding unit, 114 is an RTI output buffer, 115
Is a video output buffer, and 116 is an audio output buffer. Reference numeral 117 is a mixer for mixing the output from the RTI output buffer 114 and the output from the video output buffer 115, 118 is an overall control unit, 119 is an RTI data display setting memory, and 120 is an external input unit.

FIG. 3A is a diagram showing a multiple coded stream of audio, video, RTI pack, and packet, and FIG.
(B) is a diagram showing a detailed multi-coded stream of RTI packs and packets.

Next, the overall operation of the DVD audio reproducing apparatus according to the first embodiment will be described. In addition,
The operations relating to the RTI data decoding process, the RTI data display process, and the RTI data display set value changing process will be described later in detail.

The input processing unit 101 reads the audio data, the video data, and the RTI from the multiplexed encoded stream read out from the DVD audio disc and subjected to error correction and demodulation.
A process of separating data and the like into packet units is performed using each pack and packet header. The separated audio data, video data, and RTI data are stored in the buffer memory 10
2 (RTI buffer 103, video buffer 104, audio buffer 105).

Here, the input processing unit 101 is shown in FIG.
From the RTI packet 302 to the RTI data 308,
Only PTS 306 and playback control information 309 are separated and RT
The RTI buffer memory 10 is used as one reproduction unit of I data.
Store in 3. FIG. 5 is a diagram showing a structure of data stored in the RTI buffer memory 103. The RTI buffer memory 103 has a PTS 501, playback control information 502,
And RTI data 503 is stored as one reproduction unit, and the RTI data is decoded in this reproduction unit.

The overall control unit 118 has a time limit of R by the time indicated by the PTS 106 stored in the RTI buffer memory 103.
The TI data 108 is transferred to the RTI decoding unit 111. At this time, the reproduction control information 107 necessary for the decoding process is transferred from the overall control unit 118 to the RTI decoding unit 111. At the same time, information for setting the screen display of the RTI data is sent from the RTI data display setting memory 119 to the signal SIG.
The signal SI is transferred to the overall control unit 118 via 106.
It is transferred to the RTI decoding unit 111 via G101.

In the RTI data display setting memory 119,
Information regarding the display of the RTI data such as whether or not to execute the RTI data output, the display position of the RTI data on the screen, the size and color of the display when the RTI data is displayed on the screen, and the like are set. Here, the overall control unit 118 may hold a predetermined set value for displaying these RTI data as an initial value in advance. In this case, when there is no display setting of RTI data in the RTI data display setting memory 119 due to memory clear or the like,
Even when the data display setting memory 119 itself does not exist, the decoding process of the RTI data can be executed without interruption.

Regarding the RTI data display setting, by providing the RTI data display setting memory 119 as described above, the display setting of the RTI data can be easily changed. Since the decoding process is performed based on the above, when it is desired to change the display method of the RTI data, a means for changing the set value is required. Therefore, in the DVD audio reproducing apparatus according to the first embodiment of the present invention, R
Change the display method of TI data. Specifically, what is the video packet sent from the video buffer 104 to the video decoding unit 112 (a packet stored in the video buffer 104 after being separated from the input processing unit 101 by the input processing unit 101 from the multiplex encoded streams)? The video decoding unit 112 discriminates whether or not the image is such a signal, and the signal SI
The determination result is transferred to the overall control unit 118 through G102. Further, the video data may be determined in the video buffer 104 and transferred to the overall control unit 118. Based on the transferred determination result, the overall control unit 118
Changes the display setting of the RTI data in the RTI data display setting memory 119 via the signal SIG106. The display setting of the changed RTI data in the RTI data display setting memory 119 is performed by the signal SIG 106, the overall control unit 118,
It may be transferred to the RTI decoding unit 111 via the signal SIG101. In addition, the change result is displayed in the overall control unit 1.
18 may be directly transferred to the RTI decoding unit 111 via the signal SIG101.

As an example of the case of judging the video and displaying the RTI data, in the case of outputting a 16: 9 video to a 4: 3 screen (usually, in the DVD audio reproducing apparatus, the output format setting at the screen output is set. However, here, the size of the screen may be determined based on the setting), and the RTI data can be set to be displayed in the dark part at the top or bottom of the screen. A display example of RTI data in this case is shown in FIG.
It shows in (b). Also, as another example, 1 in a 4: 3 image
When outputting to a 6: 9 screen, the RTI data can be set to be displayed in the dark part on the left or right part of the screen.
A display example of the RTI data in this case is shown in FIG.
“DVD audio is being reproduced.” In FIGS. 8B and 8C is a display example of RTI data. As another example, when the video is a visual effect and so-called fade-in / fade-out is set for screen display, the RTI data is fade-in / fade-out and output as in the case of video output, or
It can be set to output without al Effect.

When the user wants to change the display position of the RTI data, the value of the RTI data display setting memory 119 can be changed from the external input section 120 provided in the remote controller or the DVD reproducing device. External input signal S
The IG 107 is input to the overall control unit 118 and receives the signal SIG.
The value of the RTI data display setting memory 119 can be changed via 106. As an example of setting the display position, in the case of a language such as Japanese or Chinese that allows vertical writing, it is usually possible to display horizontal RTI data in vertical writing on the left and right sides of the screen. is there. R in this case
An example of TI data display is shown in FIG. Further, when displaying a 16: 9 image on a 4: 3 screen, it is possible to display it in a dark part other than the main image display part. An example of RTI data display in this case is shown in FIG. Conversely, when a 4: 3 image is displayed on a 16: 9 screen, it is possible to display it in a dark area other than the main image display area. An example of RTI data display in this case is shown in FIG.

In addition, R is stored in the RTI data setting memory 119.
By setting the TI data display, the RTI data display position can be set to any position other than the above, above, below, left and right of the screen
Display I data, size of RTI data characters,
The color can be set freely by the user. Further, when the setting of Visual Effect is enabled, the display of RTI data is changed to Visual Effect.
Fade in and fade out as in the setting of
Or unlike the setting of Visual Effect, RT
It is also possible to set either to keep displaying the I data. The setting of these RTI data displays will be described later in detail.

RTI data 10 in the RTI buffer 103
8, the reproduction control information 107, and the set value of the RTI data display setting memory 119 are transferred to the RTI decoding unit 111, and then the text length 310c in the reproduction control information 107 matches the data length of the transferred RTI data 108. In order to determine whether or not the text length 310c and the data length of the transferred RTI data 108 are signal SIG10.
1 is transferred to the overall control unit 118. If they match, the overall control unit 118 sends an RTI decoding start signal to the RTI decoding unit 111 via the signal SIG101.
If they do not match, there is some error in the RTI data 108 or the text length 310c, and the error process is started. Through the signal SIG101, the overall control unit 118 instructs the RTI decoding unit 111 not to decode the RTI data when an error occurs. This makes it possible to avoid errors in advance. Further, the overall control unit 118 uses the signal SIG101 or the signal SIG102.
Via the RTI decoding unit 111 or the video decoding unit 11
It is also possible to send a signal to 2 to instruct to create a display image indicating that an error has occurred. Thus, when an error occurs, the user can be notified that the RTI data has an error. In addition, the RTI display setting memory 11
By setting whether or not to notify the user when an error occurs in 9, it is possible to change the method of decoding the RTI data when the error occurs to a method preferred by the user.

Next, the R transferred to the RTI decoding unit 111
The TI data 108 includes the language code 310a and the character set code 310b in the reproduction control information 107 from the external character code table storage unit 109 via the signal SIG105.
The corresponding text information is taken out, the image information is decrypted by the display method described in the RTI display setting memory 119, and the decoded image information is transferred to the RTI output buffer 114. The external character code table stored in the external character code table storage unit 109 is a table for converting a character code, which is RTI data, into image information. The external character code table storage unit 109 may be built in the RTI decoding unit. The external character code table storage unit 109 does not have to include text image information for language codes of all countries and regions, and the DVD of the present invention can be used.
Only the character code corresponding to the language code used in the country or region where the audio reproducing device is used may be provided.

The character code table used for the decoding process of the RTI data is the language code 310a of the RTI data.
The external character code table storage device 110 may download the external character code table storage unit 109 to the external character code table storage unit 109. In this case, the RTI buffer 103 or the RTI decoding unit 11
Information regarding the language code 310a of the first RTI data is transmitted to the overall control unit 118 via the signal SIG101, and further transmitted from the external character code table storage device 110 to the character code table storage unit 109 via the signal SIG104.

Information on the character code used for the first RTI data is sent from the RTI buffer 103 to the overall controller 118 via the signal SIG101. The overall control unit 118 receives the input processing unit 10 via the signal SIG109.
1 is instructed not to store a language other than the first RTI data in the RTI buffer 103. As a result, only the character code table used for the first RTI data can be downloaded to the character code table storage unit 109, and the amount of memory used for the character code table can be reduced.

It should be noted that in the input processing unit 101, RTI data other than the character code used for the first RTI data may not be stored in the RTI buffer 103. By doing so, the RTI buffer 103
The usage amount of can be reduced.

Next, when the decoding process of the RTI data is completed, the signal of which the decoding is completed is transmitted to the overall control unit 118 via the SIG101. Note that while the RTI decoding unit is decoding the RTI encoded data, the data in the video buffer 104 and the data in the audio buffer 105 are respectively output so that video and audio can be externally output at the time of the PTS information 106. The data is transferred to the video decoding unit 112 and the audio decoding unit 113 to be decoded. Each decoding process is performed by the overall control unit 118 from the signal SIG102 and the signal SIG103.
It is started by a processing start signal transmitted to the video buffer 104 and the audio buffer 105 via the.
When each decoding process ends, a decoding end signal is transmitted from each decoding processing unit to the overall control unit 118 via the signals SIG102 and SIG103.

While the decoding process is being performed based on the video and audio PTS information, the RTI data is changed to RTI.
The decoding process may be performed based on the PTS information of the data. That is, the decoding process of the video coded data and the decoding process of the audio coded data may be executed independently of the decoding process of the RTI coded data.

Next, the RTI output buffer 114, the video output buffer 115, and the audio output buffer 11
Each output signal stored in 6 is transmitted to P after receiving the completion of the decoding process in each decoding unit in the overall control unit 118.
The control signal SIG108 is transmitted to the output buffer so that each decoding result is output to the outside based on the TS information, and the image is output to the outside after the RTI data and the video signal are combined by the mixer 117, and the sound is output as it is. . In addition,
Decoding processing of the RTI data 108, the video buffer 104 data, and the audio buffer 105 data is performed by each decoding unit by the time of PTS 106, and each decoding result of video and audio having the same PTS at the time of PTS 106 of RTI data. Can be synchronized by outputting to the outside. In addition, the RTI buffer 10
If the PTS 106 in 3 contains an error, the RTI
Data decoding processing is not performed. As a result, it becomes possible to prevent the other video and audio from being decoded and being unable to be output externally.

Next, decoding processing of RTI data in the DVD audio reproducing apparatus according to the first embodiment will be described with reference to FIG. FIG. 6 is a flowchart showing an operation flow relating to RTI data decoding processing in the DVD audio reproducing apparatus according to the first embodiment of the present invention.

First, the multiple coded stream read from the DVD audio disc, error-corrected, and demodulated is input to the input processing unit 101 (step S601).
The input processing unit 101 determines whether the input multiple coded stream is an RTI pack (step S602). If it is not the RTI pack, the audio decoding unit 113 and the video decoding unit 112 perform the reproduction processing of the audio and video data, and move to the processing of the multiple encoded stream of the next reproduction unit (step S611). When the input multi-coded stream includes an RTI pack, the RTI data from the RTI pack 308, the reproduction control information 309, P
The TS 306 is extracted and transferred to the RTI buffer memory 103 (step S603). At this time, if the capacity of the RTI buffer 103 is exceeded, the new RTI data is overwritten on the old RTI buffer (step S60).
4, S612). If it is within the capacity of the RTI buffer 103, the overall control unit 118 determines whether the text length 310c of the RTI data 308 in the reproduction control information 309 of the RTI buffer 103 and the data length of the RTI data 309 match. (Step S605). If they do not match, it means that there is an error in the RTI data. Therefore, based on the setting information at the time of error in the RTI data display setting memory 119, it is determined whether or not there is an error on the screen, and the case is displayed. Indicates that there is an error (steps S613 and S614). Then, the next input stream is processed without decoding the RTI data. In addition, the RTI buffer 10 with an error
3 may be deleted (step S615).

The setting information when the above error occurs is RT
If the I data display setting memory 119 does not exist and if the RTI data display setting memory 119 does not exist, the overall control unit 118 may determine whether or not to display the error as an initial value. The display setting value of the RTI data in the RTI data display setting memory 119 described below is irrespective of the presence or absence of the RTI data display setting memory 119, unless otherwise specified, the overall control unit 118 or the RTI decoding unit. It is assumed that an initial value is set on the 111 or RTI buffer memory 103.

Next, in step S607, it is determined whether or not there is a character code table corresponding to the language code 310a in the reproduction control information 309. If it is not, decoding processing cannot be performed, so that it is displayed on the screen that there is no font corresponding to the language code (step S616). In this case as well, the display of the error message during error handling described earlier,
You can also have a hidden selection. Then RTI
The next multi-coded stream is processed without decoding the data.

Next, in step S608, the RTI data 108 transferred from the RTI buffer 103 is set to RT.
In the I decoding unit 111, the reproduction control information 107 and the RTI
Based on the information on the display setting memory 119, decoding processing is performed using the character code table storage unit 109, and the decoding result is transferred to the RTI output buffer 114 (step S
609). Next, at the time of PTS 106 of RTI data, the data of RTI output buffer 114 is set to the same PTS.
After being combined with the data of the video output buffer 115 having the above, it is externally output together with the audio output buffer 116 (step S610). After that, the process moves to the processing of the next reproduction unit multiplexed stream.

Next, the RTI data display processing in the DVD audio reproducing apparatus according to the first embodiment will be described with reference to FIG. Since the information regarding the display method of the RTI data does not exist in the RTI data, the display position of the RTI data is left to each DVD audio reproducing device. Therefore, as described above, the problem of where the RTI data should be displayed on the screen and the R
Since the TI data and the main image are displayed in an overlapping manner, RT
There is a problem that it becomes difficult to see the I data or the main video or the sub video.

Therefore, in order to solve the above problem, the DVD audio reproducing apparatus according to the first embodiment has a RT
A means for setting the display position of the I data is provided. That is, the user can use the remote controller for the DVD playback device or the external input unit 120 for setting the RTI data display of the DVD audio playback device main body before or during playback of the DVD audio disc to display or display the RTI data. Set the size and so on. When it is not desired to display the RTI data, it is possible to set not to display the RTI data. Further, it is troublesome for the user to repeat the above-described setting of the display position of the RTI data, the display size, and the presence / absence of the display at the time of turning on the power source. It is stored in the memory 119, and the RTI data display setting memory 11 is stored when the power is turned on.
The display method of the RTI data is decided based on the information of 9.

FIG. 7 is a flowchart relating to RTI data display control processing in the DVD audio reproducing apparatus according to the first embodiment. After the power is turned on, the reading of the DVD audio disc starts. After the error correction and demodulation are performed on the read multi-coded stream, D
It is input to the VD audio reproducing device. The input multi-coded stream is processed by the input processing unit 101 for audio, video,
It is separated into RTI data (step S701). The presence / absence of RTI data is determined in one reproduction unit of the multiple encoded stream input to the input processing unit 101 (step S702). If there is no RTI data,
Then, the process proceeds to audio and video reproduction processing (step S711). R
If the TI data exists (step S703),
It is determined whether or not there is RTI data display setting information in the RTI data display setting memory 119 (step S
704). If the display setting does not exist, the RTI data is not displayed and the audio / video reproducing process is performed (step S7).
11).

Further, even when there is no display setting, it is possible to specify another display setting value as an initial value. In that case, the initial value is set as the RTI data display set value, and the process proceeds to step S704. The display setting value of the RTI data in the RTI data display setting memory 119 described below is irrespective of the presence or absence of the RTI data display setting memory 119, unless otherwise specified, the overall control unit 118 or the RTI decoding unit. It is assumed that an initial value is set on the 111 or RTI buffer memory 103.

Next, in step S704, if there is a display setting value of RTI data, the setting content is set to RTI.
Determine whether data is displayed on the screen or not. If the setting is such that the RTI data is not displayed, the RTI data is not displayed and the process proceeds to the video / audio reproduction process (step S711). In the case of the setting for displaying the RTI data, the display position, the setting value of the display size, and the like are read as the display setting contents of the RTI data, and the RTI data is decoded into a video signal according to the display setting (steps S705 and S706). ). Then, the decoded RTI data is output to the outside after being combined with the video (step S707). When the display of the RTI data ends, it is determined whether or not the next reproduction unit, that is, the next multiplex-encoded stream exists (step S708). If the next multiple encoded stream does not exist, the reproduction of the DVD audio disc ends. If the next multiplex-encoded stream exists, the process moves to the reproduction processing of the next stream.

However, before proceeding to the next reproduction processing, the RTI
It is possible to change the display position of data, the size of the display, the setting of the presence or absence of the display, etc. as an interrupt process. That is, the external input unit 120 that allows the user to change the set value of the display setting memory 119 of the RTI data as desired, and set the set value to the next RTI.
The setting value of the display setting memory 119 of the RTI data can be changed for each stream by changing it before the data decoding process (steps S709 and S710). RT
If the value of the I data display setting memory 119 is not changed, the process proceeds to the next reproduction process.

The above RTI data display setting function (RTI
(Display position of data, display size, color, presence / absence of display, notification of presence / absence of error, etc.)
In the same manner as the setting of whether or not to display the sub-picture can be set in the menu command at the time of reproduction, it can be realized by incorporating it as an initial setting function of the reproduction device in advance.

Next, in the DVD audio reproducing apparatus according to the first embodiment, the RTI data display setting memory 1
A method of changing the value of 19 using the external input unit 120 will be described with reference to FIGS. 9 to 18.

FIG. 9 shows the RTI data display setting memory 11
It is a display setting menu screen of RTI data when changing the value of 9. This RTI data display setting menu screen is normally a new RTI data display setting menu on the menu screen (menu screen for selecting subtitles, audio Japanese, English, etc.) provided during DVD playback. It can be provided by adding items. Also, R
By displaying the display settings of TI data on the menu screen,
It is possible to easily change the value of the RTI data display setting memory 119 by using the external input unit 120 such as a remote controller.

In FIG. 9, although there are white and black items, the items whose characters are displayed in white indicate the currently selected item, and the other items indicate non-selected items. . Further, this selection item can be freely changed by using an arrow key or the like of an external input unit such as a remote controller. Normally, you can change the setting value by moving the selected item to the item you want to change (that is, after moving the white display) and then pressing the Enter key (or the return key etc.). You can confirm your choice. 901-
Up to 920, one item is shown in each of the left and right two columns, the left shows the item name, and the right shows the set value. Further, in the lower part "to playback" 921 and "to menu" 922, each item is executed after the item is selected and determined. In other words, after “Go to Play” 921 is selected and decided, the DVD
After the audio reproduction starts and the "to menu" 922 is selected and determined, the screen returns to the first menu screen described above. Further, 919 and 920 indicate that after the 919 is selected and determined, it is returned to the default value registered in advance (default value registered by the creator of the DVD reproducing apparatus or the user). That is, it can be used when the user wants to return to the default setting value after changing the display setting of the RTI data. This is useful when the user wants to restore the original settings after changing the settings.

Next, each item will be described. In the following description, the process after selecting and deciding the setting item to be changed will be described. FIG. 10 is a menu screen for changing the presence / absence of RTI data display when “presence / absence of display” 901 of the RTI data display setting menu is selected and determined. In this item, when “present” 1001 is selected and determined, it is determined to display the RTI data, and the value of the RTI data display setting memory 119 is changed. In addition, if “none” 1002 is selected and determined, the RTI
It is decided not to display the data, and the value of the display setting memory 119 for the RTI data is changed. Further, after the change is determined, it is possible to return from the current menu to the RTI data display setting menu of FIG. 9 or to leave the screen of FIG. 9 as it is. When 1003 is selected and determined, the RTI data display setting menu of FIG. 9 is returned to.

FIG. 11 is a menu screen for changing the display position of the RTI data when the "display position" 903 of the RTI data display setting menu is selected and decided.
In this item, when each item 1101 to 1109 is selected and determined, the value of the display setting memory 119 of the RTI data is changed so that the display position of the RTI data is displayed at each position. Instead of displaying at the position shown in FIG. 11, it is also possible to determine the display position by pointing to the actual coordinates of the screen using a mouse or arrow keys. Further, after the change is decided, it is possible to return to the RTI data display setting menu of FIG. 9 or to leave the screen of FIG. 11 as it is. When 1110 is selected and determined, the RTI data display setting menu of FIG. 9 is returned to.

FIG. 12 shows that when "text size" 905 of the RTI data display setting menu is selected and decided,
It is a menu screen for changing the size of the text of RTI data. In this item, each item 1201-12
When 05 is selected and decided, the size of the text of the RTI data is set to the size of the corresponding character,
The value of the display setting memory 119 for RTI data is changed.
In addition to the character size shown in FIG. 12, it is possible to freely change the character size by allowing numerical input. Also, after the above changes are decided, FIG.
It is also possible to return to the RTI data display setting menu of FIG.
It is also possible to leave the screen of. Note that 1206
If is selected and determined, the RTI data display setting menu of FIG. 9 is returned to.

FIG. 13 shows that when "text color" 907 in the RTI data display setting menu is selected and determined, the RT
It is a menu screen for changing the color of the text of I data. In this item, when each item 1301 to 1308 is selected and determined, the value of the display setting memory 119 of the RTI data is changed so that the color of the text of the RTI data becomes the color of the corresponding character. It should be noted that if the number of colors for display is increased in addition to the colors shown in FIG. 13, the RTI data can be displayed in more colors. Further, after the change is determined, it is possible to return to the RTI data display setting menu of FIG. 9 or to leave the screen of FIG. 13 as it is. When 1309 is selected and decided, the RTI data display setting menu of FIG. 9 is returned to.

In FIG. 14, when "vertical writing, horizontal writing" 909 in the RTI data display setting menu is selected and determined, R
It is a menu screen for changing the display method of TI data to either vertical writing or horizontal writing. In this item,
If "horizontal" 1401 is selected, RTI data is displayed horizontally, and if "vertical" 1402 is selected,
The value of the display setting memory 119 for RTI data is changed so that the RTI data is displayed vertically. Further, after the above change is determined, it is possible to return to the RTI data display setting menu of FIG. 9 or to leave the screen of FIG. 14 as it is. When 1403 is selected and determined, the RTI data display setting menu of FIG. 9 is returned to.

FIG. 15 is a menu screen for changing the size of the screen on which the image from the DVD audio reproducing apparatus of the present invention is displayed when "Screen Size" 911 of the RTI data display setting menu is selected and decided. is there. In this item, if "16: 9" 1501 is selected, 16:
When displaying a 4: 3 image on the screen No. 9, which of the left and right dark areas of the screen the RTI data is to be displayed (“left” 1
504, “right” 1505), or neither of them, it is possible to select whether to display in the portion selected in the display position setting menu 903 (“OFF” 1503), and display the RTI data in the set value. Setting memory 119
Change the value of. If “4: 3” 1502 is selected, R is displayed when displaying a 16: 9 image on a 4: 3 screen.
Which of the upper and lower dark areas of the screen the TI data should be displayed on (“up” 1507, “down” 1508), or neither of them, should be displayed on the portion selected in the display position setting menu 903 (“OFF”). 1506) can be selected, and the value of the display setting memory 119 of the RTI data is changed to the set value. Also, after the above changes are decided,
It is possible to return to the RTI data display setting menu of FIG. 9 or to leave the screen of FIG. 15 as it is. In addition, 15
When 09 is selected and determined, the RTI data display setting menu shown in FIG. 9 is returned to.

In FIG. 16, "Visual Effect compatible" 913 of the RTI data display setting menu is selected,
When the decision is made, the method for displaying the RTI data will be Visual
It is a menu screen for changing the setting of whether to apply the lEffect effect. In this item,
If "ON" 1601 is selected, RTI data will also be Vis
Apply the ual Effect effect, and
If you select "FF" 1602, the RTI data will be
The value of the display setting memory 119 of the RTI data is changed so that the al Effect effect is not applied. Further, after the above change is determined, it is possible to return to the RTI data display setting menu of FIG. 9 or to leave the screen of FIG. 16 as it is. If 1603 is selected and decided, the RTI of FIG.
Return to the data display setting menu.

FIG. 17 shows a case in which there is no character code corresponding to the decoding process of RTI data when "presence or absence of error message display when no corresponding character code exists" 915 is selected and determined in the RTI data display setting menu. This is a menu for changing the setting of whether or not to display an error message. In this item, "Yes" 1
If 701 is selected and “none” 1702 is selected so that an error message is displayed when there is no corresponding character code during RTI data decoding processing, RT is selected.
In order not to display an error message when there is no corresponding character code when decoding I data, RT
The value of the I data display setting memory 119 is changed. Further, after the above change is decided, it is possible to return to the RTI data display setting menu of FIG. 9 or to remain the screen of FIG. When 1703 is selected and decided, the RTI data display setting menu of FIG. 9 is returned to.

FIG. 18 is a setting for whether or not to display an error message when there is any error in the RTI data when "Presence or absence of error message display" 917 of the RTI data display setting menu is selected and determined. Is a menu for changing. In this item, "Yes" 1
Selecting 801 will display an error message when there is an error in the RTI data.
If you select 1802, even if there is any error in the RTI data, the error message will not be displayed.
The value of the I data display setting memory 119 is changed. Further, after the above change is decided, it is possible to return to the RTI data display setting menu of FIG. 9 or to remain the screen of FIG. When 1803 is selected and determined, the RTI data display setting menu of FIG. 9 is returned to.

The items and display methods of the menu screens shown in FIGS. 9 to 18 are merely examples, and the present invention is not limited to these examples. Also, the number of items can be narrowed down to some items and the menu display can be changed.

As described above, the DVD audio reproducing apparatus according to the present embodiment uses the menu display screen to set the RT
Since the constitution is provided with the external input means for setting the display method of the I data, the user can change the display method of the RTI data according to his / her preference by using the external input section while looking at the menu display screen. You can

[0106]

As described above, according to the DVD audio reproducing apparatus of the present invention (Claim 1), audio, video, real-time text information, additional information, etc. are digitally encoded based on the DVD audio standard. DVD for playing back a multi-coded stream multiplexed in packet units
An audio reproducing apparatus, wherein the multiple encoded stream includes a plurality of packs, each of the plurality of packs includes at least one packet, the packet includes a packet header and encoded data, and the encoded data is ,
Packet voice coded data, packet video coded data, or packet real-time text information coded data, including real-time text information coded data from the packet containing the real-time text information coded data, and An input processing unit for separating the reproduction control information of the real-time text information including the language code, the character set code, the text data length, the repeat flag, and the maximum display time from the display time information in the packet header, and the input processing. Since the real-time text information decoding unit that decodes the real-time text information encoded data based on the information separated by the unit is provided, the RTI data is reproduced and displayed from the multiple encoded stream including the RTI data. The effect that can be A.

Further, according to the DVD audio reproducing apparatus of the present invention (Claim 2), in the DVD audio reproducing apparatus according to Claim 1, the input processing unit is the real-time text separated by the input processing unit. Information encoded data, reproduction control information of the real-time text information, and display time information of the real-time text information are stored in a storage device as one real-time text information data format, and the real-time text information decoding unit is Since the real-time text information coded data stored in the storage device is to be decoded, other data included in the RTI pack that is not used can be eliminated and the buffer memory can be efficiently used. Further, since only the necessary information can be extracted and stored in advance when it is stored in the RTI buffer, there is an effect that there is no need to re-execute parameter extraction or the like at the time of decoding.

According to the DVD audio reproducing apparatus of the present invention (Claim 3), in the DVD audio reproducing apparatus of Claim 2, the time of the display time information in the packet header of the video coded data is set. And a video decoding unit that decodes the encoded video data, and an audio decoding unit that decodes the encoded audio data by the time of the display time information in the packet header of the encoded audio data. The real-time text information decoding unit, based on the display time information stored in the storage device, the text encoded data included in the real-time text information encoded data stored in the storage device, the reproduction control information. Use the text data length of the real-time text information included in and the external character code table. Decoding processing is performed, and the video data decoded by the video decoding unit and the real-time text information data decoded by the real-time text information decoding unit are combined by a mixer, and then decoded by the audio decoding unit. Since the RTI data is output to the outside at the time of the display time information together with the audio data, managing the RTI data together with the video and audio PTS information has the effect of enabling synchronous reproduction.

Further, according to the DVD audio reproducing apparatus of the present invention (Claim 4), in the DVD audio reproducing apparatus of Claim 3, the external character used when decoding the real-time text information encoded data is used. Since the means for changing the code table to the character code table of the language used in a specific country or region is provided, the character code table corresponding to the language code of the RTI data is set for all the language codes. It is not necessary to provide the memory, and the memory capacity of the external character code table storage device for storing the external character code can be suppressed to the necessary minimum. Further, since there is no corresponding language code and the decoding process cannot be performed, there is an effect that it is possible to avoid hang-up during DVD audio reproduction. Furthermore, the other functions of the DVD audio reproducing apparatus can be used as they are simply by changing the character code table, and there is an effect that there is no need to create a new DVD audio reproducing apparatus.

According to the DVD audio reproducing apparatus of the present invention (Claim 5), in the DVD audio reproducing apparatus according to Claim 3, the external character code table used by the real-time text information decoding section for decoding processing is used. An external character code table storage unit for storing, an external character code table storage device for accumulating a plurality of external character code tables, and the real-time text information decoding unit decodes the real-time text information from the external character code table storage device. Control means for downloading only the external character code table used when
Since it is equipped with, there is an effect that the memory capacity of the external character code table storage unit can be reduced. Further, since there is no corresponding language code and the decoding process cannot be performed, there is an effect that it is possible to avoid hang-up during DVD audio reproduction.

Further, according to the DVD audio reproducing apparatus of the present invention (Claim 6), in the DVD audio reproducing apparatus according to Claim 3, the external character code table used by the real-time text information decoding unit for decoding processing is used. An external character code table storage unit for storing, an external character code table storage device for accumulating a plurality of external character code tables, and the real-time text information decoding unit decodes the real-time text information from the external character code table storage device. And a control means for downloading only the external character code table used when the external character code table is stored in the external character code table storage section only once, and the input processing section downloads characters other than the external character code table downloaded by the control means. The real-time text information code of real-time text information using a code Since the data, the reproduction control information of the real-time text information, and the display time information of the real-time text information are not stored in the storage device, the memory capacity of the external character code table storage unit and the RTI buffer is reduced. There is an effect that can be. Further, since there is no corresponding language code and the decoding process cannot be performed, there is an effect that it is possible to avoid hang-up during DVD audio reproduction.

According to the DVD audio reproducing apparatus of the present invention (Claim 7), in the DVD audio reproducing apparatus of Claim 3, a screen display position at the time of outputting the video of the real-time text information encoded data, A real-time text information data display setting memory for presetting display size, display color, and presence / absence of display, wherein the real-time text information decoding unit is set in the real-time text information data display setting memory. The real-time text information coded data is decoded into a video signal according to the settings of the screen display position, the display size, the display color, and the presence / absence of the display. RTI just by changing the contents of the memory
The data decoding processing method can be easily changed.

According to the DVD audio reproducing device of the present invention (claim 8), in the DVD audio reproducing device according to claim 7, the real-time text information data display setting memory is the real-time text information encoded data. Content of the real-time text information data display setting memory, since it has an initial value for setting the screen display position, the display size, the display color, and the presence or absence of the display when outputting Even when is cleared, the RTI data decoding process can be executed without interruption.

Further, according to the DVD audio reproducing apparatus of the present invention (Claim 9), in the DVD audio reproducing apparatus according to Claim 7, the real-time text information decoding section is an image output format of the video coded data. In response to the above, since the real-time text information encoded data is decoded so as to change the display method of the real-time text information data, the RTI data displayed on the screen and the main video overlap each other, and There is an effect that it is possible to prevent both the RTI data from becoming difficult to see.

A DVD according to the present invention (claim 10)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 7, the real-time text information decoding unit displays a video signal of an image output format of the video encoded data of 16: 9 and a display unit of 4: 3. When the real-time text information data is output to the screen, the real-time text information encoded data is subjected to the data code processing so that the real-time text information encoded data is output to the dark part at the top or bottom of the screen. There is an effect that the RTI data can be displayed at the optimum display position from the information. In addition, the RTI data displayed on the screen and the main video overlap and the main video and R
There is an effect that it is possible to prevent the TI data from becoming hard to see together.

A DVD according to the present invention (claim 11)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 7, the real-time text information decoding unit displays a video signal in which the image output format of the video coded data is 4: 3 and the display unit is 16: 9. When outputting to the screen, for the language in which the real-time text information data allows vertical writing, the real-time text information is output so that the real-time text information data is output vertically to the dark portion on the left or right side of the screen. Since the encoded data is decoded, the RTI data can be displayed at the optimum display position based on the video information and the real-time text information display setting information.
Further, there is an effect that it is possible to avoid that the RTI data displayed on the screen and the main video overlap each other and both the main video and the RTI data become hard to see.

A DVD according to the present invention (claim 12)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 7, the real-time text information decoding unit outputs the image of the video encoded data as Vi.
When the fade-in or the fade-out is output by the dual effect, the real-time text information data is faded in or out like the image output, or the Visual Ef.
Since it is assumed that the real-time text information encoded data is decoded so as to be output without the effect, when the video uses the Visual Effect,
RTI data should be processed in the same way, or vice versa.
There is an effect that the RTI data may not be subjected to the same processing.

A DVD according to the present invention (claim 13)
According to the audio reproducing apparatus, the DVD audio reproducing apparatus according to claim 7, further comprising an external input unit for inputting an instruction to change the setting value of the real-time text information data display setting memory, so that the RTI data is recorded. The effect is that it can be displayed in the position, size, and color that the user likes.

A DVD according to the present invention (claim 14)
According to the audio reproducing device, the DVD according to claim 13.
In the audio reproducing apparatus, the external input unit changes a set value of the real-time text information data display setting memory so as to display the real-time text information data in a vertical writing mode or a horizontal writing mode in response to an external input. Therefore, there is an effect that the RTI data can be displayed vertically in a language in which vertical writing is possible.

A DVD according to the present invention (claim 15)
According to the audio reproducing device, the DVD according to claim 13.
In the audio reproducing device, the external input unit outputs the real-time text in response to an external input when outputting a video signal in which a video output format of the video encoded data is 16: 9 to a 4: 3 screen. Information data,
Since the setting value of the real-time text information data display setting memory is changed so as to be output to the dark part at the top or bottom of the screen, the RTI data and the main video displayed on the screen overlap each other, and the main video and the RTI data are displayed. There is an effect that it can be avoided that both are difficult to see.

A DVD according to the present invention (claim 16)
According to the audio reproducing device, the DVD according to claim 13.
In the audio reproducing apparatus, when the external input unit outputs a video signal in which the image output format of the video encoded data is 4: 3 to a 16: 9 screen, the real-time text information data can be written vertically. The setting value of the real-time text information data display setting memory is changed so that the real-time text information data is output vertically in the left part of the screen or in the dark part on the right part of the screen according to the input from the outside. Therefore, there is an effect that it is possible to avoid that the RTI data displayed on the screen and the main video overlap each other and both the main video and the RTI data become hard to see.

A DVD according to the present invention (claim 17)
According to the audio reproducing device, the DVD according to claim 13.
In the audio reproducing apparatus, the external input unit outputs the image of the encoded video data as a visual effect.
When the image is output by fading in or out by ct, the real-time text information data is faded in or out in the same manner as the image output according to an input from the outside, or is displayed as Visual.
Since the setting value of the real-time text information data display setting memory is changed so as to output without effect, the image is a visual effect.
There is an effect that the same processing can be performed on the RTI data when t is used, or conversely, the same processing can not be performed on the RTI data.

A DVD according to the present invention (claim 18)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 2, the input processing unit is the input processing unit when the storage device is filled with the real-time text information separated by the input processing unit. Since the separated new real-time text information is stored in the storage device by overwriting the old real-time text information already stored in the storage device, the RTI data of the RTI data is exceeded because it exceeds the capacity of the RTI buffer memory. There is an effect that it is possible to prevent the decoding process from being disabled.

A DVD according to the present invention (claim 19)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 1, an error is included in the reproduction control information or the real-time text information encoded data of the real-time text information separated by the input processing unit. At this time, since the error processing unit that does not display the real-time text information is provided, the reproduction processing of the DVD audio disc can be continued even if the real-time text information encoded data includes an error. effective.

A DVD according to the present invention (claim 20)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 1, an error is included in the reproduction control information or the real-time text information encoded data of the real-time text information separated by the input processing unit. At this time, since the real-time text information is provided with an error processing unit that displays an error in the video, it is possible to inform the user that the real-time text information contains an error.

A DVD according to the present invention (claim 21)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 1, the real-time text information is not displayed when the display time information of the real-time text information separated by the input processing unit includes an error. Since the error processing unit is provided, it is possible to prevent the reproduction processing of the DVD audio disc from being disabled.

A DVD according to the present invention (claim 22)
According to the audio reproducing apparatus, in the DVD audio reproducing apparatus according to claim 7, the reproduction control information or the real-time text information code of the real-time text information separated by the input processing unit is stored in the real-time text information display setting memory. When the encoded data includes an error, the external input unit is provided for inputting an instruction to set whether to display the error in the real-time text information in the video output or not to display the error. It has the effect that the user can set and decide the error handling method.

A DVD according to the present invention (claim 23)
According to the audio reproducing method, audio, video, real-time text information, additional information, etc. are digitally encoded based on the DVD audio standard, and a multiplexed encoded stream multiplexed in packet units is reproduced. The multi-coded stream includes a plurality of packs, each of the plurality of packs includes at least one packet, the packet includes a packet header and packet coded data, and the packet coded data is a packet voice. Any one of encoded data, packet video encoded data, and packet real-time text information encoded data, wherein the packet containing the real-time text information encoded data is selected from the real-time text information encoded data and the real-time text. Of information The input processing step of separating the reproduction control information including the language code, the character set code, the text data length, the repeat flag, and the maximum display time, and the display time information in the packet header, and the input processing step Since it includes a real-time text information decoding step of decoding the real-time text information encoded data based on the information,
It is possible to reproduce and display the RTI data from the multiple encoded stream including the RTI data.

The DVD according to the present invention (claim 24)
According to the audio reproducing method, the DVD according to claim 23.
In the audio reproducing method, the input processing step combines the real-time text information encoded data separated in the input processing step, reproduction control information of the real-time text information, and display time information of the real-time text information into one. It includes a data storage step of storing in a storage device as a data format of real-time text information, and the real-time text information decoding step is to decode the real-time text information encoded data stored in the storage device in the data storage step. Therefore, there is an effect that other data which is not used and is not included in the RTI pack can be eliminated and the buffer memory can be efficiently used. Further, since only the necessary information can be extracted and stored in advance when it is stored in the RTI buffer, there is an effect that there is no need to re-execute parameter extraction or the like at the time of decoding.

A DVD according to the present invention (claim 25)
According to the audio reproducing method, the DVD according to claim 24.
In the audio reproducing method, the reproduction control information includes text encoded data included in the real-time text information encoded data stored in the data storing step, based on the display time information stored in the data storing step. By the real-time text information decoding step of decoding using the text data length of the real-time text information and an external character code table, by the time of the display time information in the packet header of the video coded data, A video decoding step of decoding video coded data, an audio decoding step of decoding the coded audio data by the time of the display time information in the packet header of the coded audio data, and a video decoding step. Decoded image A step of synthesizing the data and the real-time text information data decoded in the real-time text information decoding step with a mixer, and then externally outputting the data with the audio data decoded in the audio decoding step at the time of the display time information. Since it is included, by managing the RTI data together with the video and audio PTS information, there is an effect that synchronous reproduction can be performed.

A DVD according to the present invention (claim 26)
According to the audio reproducing method, the DVD according to claim 25.
In the audio reproducing method, the external character code table used in the real-time text information decoding step,
Since the step of changing to the character code table of the language used in a specific country or region is included, it is not necessary to provide the character code table corresponding to the language code of the RTI data for all language codes, There is an effect that the memory capacity of the external character code table storage device for storing the external character code can be suppressed to the necessary minimum. Further, since there is no corresponding language code and the decoding process cannot be performed, there is an effect that it is possible to avoid hang-up during DVD audio reproduction. Furthermore, the other functions of the DVD audio reproducing apparatus can be used as they are simply by changing the character code table, and there is an effect that there is no need to create a new DVD audio reproducing apparatus.

A DVD according to the present invention (claim 27)
According to the audio reproducing method, the DVD according to claim 25.
In the audio reproducing method, from the external character code table storage device that stores a plurality of external character code tables, only the external character code table used when decoding the real time text information is subjected to the decoding process in the real time text information decoding step. Since it includes the download step of downloading to the external character code table storage unit that stores the external character code table to be used, the memory capacity of the external character code table storage unit can be reduced. Further, since there is no corresponding language code and the decoding process cannot be performed, there is an effect that it is possible to avoid hang-up during DVD audio reproduction.

A DVD according to the present invention (claim 28)
According to the audio reproducing method, the DVD according to claim 25.
In the audio reproducing method, from the external character code table storage device that stores a plurality of external character code tables, only the external character code table used when decoding the real time text information is subjected to the decoding process in the real time text information decoding step. The external character code table storage unit for storing the external character code table to be used includes a download step of downloading only once, and in the data storing step of the input processing step, other than the external character code table downloaded in the download step. The real-time text information encoded data of real-time text information using a character code, and reproduction control information of the real-time text information,
Since the display time information of the real-time text information is not stored in the storage device, the memory capacity of the external character code table storage unit and the RTI buffer can be reduced. Further, since there is no corresponding language code and the decoding process cannot be performed, there is an effect that it is possible to avoid hang-up during DVD audio reproduction.

A DVD according to the present invention (claim 29)
According to the audio reproducing method, the DVD according to claim 25.
In the audio reproducing method, a screen display position when the real-time text information encoded data is output as a video,
A real-time text information data display setting step for setting display size, display color, and presence / absence of display, wherein the real-time text information decoding step includes the screen set in the real-time text information data display setting step. According to the display settings of the display position, the size of the display, the color of the display, and the presence or absence of the display, the real-time text information encoded data is decoded into a video signal. There is an effect that the method of decoding RTI data can be easily changed only by changing the contents of the display setting.

The DVD according to the present invention (claim 30)
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, in the real-time text information data display setting step, the screen display position, the display size, the display color, and the presence / absence of the display when the real-time text information encoded data is output as an image. Since the set value of the display of is set to the initial value which is already held, even if the contents of the display setting of the real-time text information data are cleared,
There is an effect that the data decoding process can be executed without interruption.

A DVD according to the present invention (claim 31)
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, the real-time text information decoding step decodes the real-time text information encoded data so as to change a display method of the real-time text information data in accordance with an image output format of the video encoded data. Therefore, there is an effect that it is possible to avoid that the RTI data displayed on the screen and the main video are overlapped with each other and both the main video and the RTI data are hard to see.

A DVD according to the present invention (claim 32)
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, in the real-time text information decoding step, a video signal having an image output format of the video coded data of 16: 9 is displayed by a display unit of 4: 3.
When the real-time text information data is output to the screen, the real-time text information encoded data is decoded so that the real-time text information data is output to the dark part at the top or bottom of the screen. There is an effect that the RTI data can be displayed at the optimum display position from the information. Further, there is an effect that it is possible to avoid that the RTI data displayed on the screen and the main video overlap each other and both the main video and the RTI data become hard to see.

The DVD according to the present invention (claim 33)
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, in the real-time text information decoding step, a video signal having an image output format of the video encoded data of 4: 3 is displayed by a display unit at 16: 9.
When the real-time text information data is output to the screen, the real-time text information data is output in the vertical direction to the left part of the screen or the dark part of the right part of the screen for the language that allows the vertical writing. Since it was decided to decode the text information encoded data,
There is an effect that the RTI data can be displayed at the optimum display position from the video information and the real-time text information display setting information. Further, there is an effect that it is possible to avoid that the RTI data displayed on the screen and the main video overlap each other and both the main video and the RTI data become hard to see.

A DVD according to the present invention (claim 34).
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, the real-time text information decoding step outputs the real-time text information data in the same manner as the image output when the image output of the video coded data is output by fading in or out by Visual Effect. Fade in or fade out, or Visual
Since the real-time text information coded data is decoded so as to be output without the l Effect, when the video uses the Visual Effect, the RTI data may be subjected to the same processing, or conversely, the RTI data may be processed. There is an effect that the same processing may not be applied to the data.

The DVD according to the present invention (claim 35)
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, the real-time text information data display setting step includes an external input step of changing the set value of the display of the real-time text information data in response to an external input.
There is an effect that the TI data can be displayed in the user's favorite position, size and color.

A DVD according to the present invention (claim 36)
According to the audio reproducing method, the DVD according to claim 35.
In the audio reproducing method, the external input step changes the display setting value of the real-time text information data so that the real-time text information data is displayed vertically or horizontally in accordance with an input from the outside. Therefore, for languages that allow vertical writing, R
There is an effect that the TI data can be displayed vertically.

A DVD according to the present invention (claim 37)
According to the audio reproducing method, the DVD according to claim 35.
In the audio reproducing method, in the external input step, the image output format of the video coded data is 1
When outputting a 6: 9 video signal to a 4: 3 screen, the real-time text information data is displayed so as to output the real-time text information data to the dark part at the top or bottom of the screen in response to an external input. Since the setting value of is changed, there is an effect that it is possible to prevent the RTI data displayed on the screen and the main video from overlapping each other and making it difficult to see both the main video and the RTI data.

A DVD according to the present invention (claim 38)
According to the audio reproducing method, the DVD according to claim 35.
In the audio reproducing method, the external input step includes outputting the real-time text in response to an external input when outputting a video signal in which a video output format of the video coded data is 4: 3 to a 16: 9 screen. Change the setting value of the display of real-time text information data so that the real-time text information data is output vertically to the dark part on the left or right side of the screen for languages in which the information data allows vertical writing. Therefore, there is an effect that it is possible to avoid that the RTI data displayed on the screen and the main video are overlapped with each other and both the main video and the RTI data are hard to see.

A DVD according to the present invention (claim 39)
According to the audio reproducing method, the DVD according to claim 35.
In the audio reproducing method, in the external input step, the image output of the video coded data is Visual.
When the fade-in or the fade-out is output by Effect, the real-time text information data is faded in or out in the same manner as the image output, or Vi in accordance with the input from the outside.
Since the setting value of the display of the real-time text information data is changed so as to be output without the real effect, the RTI data may be subjected to the same processing when the video uses the visual effect, or vice versa. There is an effect that the RTI data may not be subjected to the same processing.

The DVD according to the present invention (claim 40)
According to the audio reproducing method, the DVD according to claim 24.
In the audio reproducing method, the input processing step includes a new real-time text separated in the input processing step when the storage device stored in the data storing step is filled with the real-time text information separated in the input processing step. Since the information is to be stored in the storage device by overwriting the old real-time text information already stored in the storage device, the RTI data cannot be decoded because the RTI buffer memory capacity is exceeded. There is an effect that can be avoided.

A DVD according to the present invention (claim 41)
According to the audio reproducing method, the DVD according to claim 23.
In the audio reproducing method, an error for not displaying the real-time text information when the reproduction control information of the real-time text information separated in the input processing step or the real-time text information encoded data includes an error. Since the processing steps are included, there is an effect that the reproduction processing of the DVD audio disc can be continued even if the real-time text information encoded data includes an error.

A DVD according to the present invention (claim 42)
According to the audio reproducing method, the DVD according to claim 23.
In the audio reproducing method, when an error is included in the reproduction control information or the real-time text information encoded data of the real-time text information separated in the input processing step, a video indicating that the real-time text information has an error is displayed. Since the error processing step for displaying is included, it is possible to inform the user that the real-time text information contains an error.

A DVD according to the present invention (claim 43)
According to the audio reproducing method, the DVD according to claim 23.
In the audio reproducing method, when the display time information of the real-time text information separated in the input processing step includes an error, an error processing step of not displaying the real-time text information is included, There is an effect that it is possible to prevent the reproduction processing of the DVD audio disc from being disabled.

A DVD according to the present invention (claim 44).
According to the audio reproducing method, the DVD according to claim 29.
In the audio reproducing method, the real-time text information display setting step outputs a video when the reproduction control information of the real-time text information separated in the input processing step or the real-time text information encoded data includes an error. In the above, the setting of displaying or not displaying the error in the real-time text information was included in the external input step that is performed according to the input from the outside, so the user decides by setting the error handling method. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a DVD audio reproducing device according to a first embodiment of the present invention.

FIG. 2 is a display example of RTI data. (A) is an example when a single-byte character is used, and (b) is an example when a double-byte character is used.

FIG. 3A is an explanatory diagram of audio, video, an RTI pack, a multiple encoded stream of packets, and RTI data. (B) is a detailed view of (a).

FIG. 4 is a block diagram of a conventional DVD audio reproducing device.

FIG. 5 is a configuration diagram of data stored in an RTI buffer in the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 6 is a flowchart relating to RTI data decoding processing by the DVD audio reproducing apparatus according to the first embodiment of the present invention.

FIG. 7 is a flowchart relating to RTI data display processing by the DVD audio playback device according to the first embodiment of the present invention.

FIG. 8 shows some display examples of RTI data by the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 9 is a display example of an RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 10 is a display example regarding whether or not the RTI data display setting menu is displayed by the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 11 is a display example regarding the display position of the RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 12 is a display example regarding the size of text of the RTI data display setting menu by the DVD audio reproducing apparatus according to the first embodiment of the present invention.

FIG. 13 is a display example relating to the text color of the RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 14 is a display example regarding vertical writing / horizontal writing of the RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention.

FIG. 15 is a display example regarding the screen size of the RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention.

[Fig. 16] Visu of the RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention.
It is a display example regarding al Effect support.

FIG. 17 is a display example regarding whether or not an error message is displayed in the RTI data display setting menu by the DVD audio reproducing device according to the first embodiment of the present invention when there is no corresponding character code.

FIG. 18 is a display example regarding whether or not an error message is displayed in the RTI data display setting menu by the DVD audio playback device according to the first embodiment of the present invention.

[Explanation of symbols]

100 DVD audio playback device 101 Input processing unit 102 buffer memory 103 RTI buffer 104 video buffer 105 audio buffer 106 PTS 107 Playback control information 108 RTI data 109 External character code table storage 110 External character code table storage device 111 RTI decoding unit 112 Video Decoding Unit 113 Audio Decoding Unit 114 RTI output buffer 115 video output buffer 116 audio output buffer 117 Mixer 118 Overall control unit 119 RTI data display setting memory 120 External input section

Continued front page    F-term (reference) 5C053 FA24 GB06 GB11 JA01 JA16                       LA06 LA11                 5C059 MA00 RB02 RB09 RC04 RC32                       RC34 SS13 SS30 UA05 UA38                 5D044 AB05 AB07 BC03 CC06 DE02                       DE03 DE12 DE14 DE18 FG10                       FG21 HL04                 5D045 DA20

Claims (44)

[Claims] 1. A DVD audio reproducing apparatus for reproducing audio, video, real-time text information, additional information, etc. digitally encoded according to the DVD audio standard, and reproducing a multiplexed encoded stream multiplexed in packet units, The multiple encoded stream includes a plurality of packs, each of the plurality of packs includes at least one packet, the packet includes a packet header and encoded data, and the encoded data is packet voice encoded data,
Packet video coded data, and one containing packet real-time text information coded data, from the packet containing the real-time text information coded data, real-time text information coded data,
An input processing unit for separating the reproduction control information including the language code, the character set code, the text data length, the repeat flag, and the maximum display time of the real-time text information, and the display time information in the packet header, the input A DVD audio playback device, comprising: a real-time text information decoding unit that decodes real-time text information encoded data based on the information separated by the processing unit. 2. The DVD audio reproducing apparatus according to claim 1, wherein the input processing unit includes the real-time text information encoded data separated by the input processing unit, reproduction control information of the real-time text information, and Storing the display time information of the real-time text information in a storage device as a data format of one real-time text information, and the real-time text information decoding unit decodes the real-time text information encoded data stored in the storage device. A DVD audio reproducing apparatus, characterized in that 3. The DVD audio reproducing apparatus according to claim 2, wherein the video decoding unit decodes the video encoded data by the time of the display time information in the packet header of the video encoded data, By the time of the display time information in the packet header of the encoded voice data, an audio decoding unit for decoding the encoded voice data, and the real-time text information decoding unit, the real-time text information decoding unit is stored in the storage device. The text coded data included in the real-time text information coded data stored in the storage device based on the display time information, the text data length of the real-time text information included in the reproduction control information, and the external character code table. Video that has been decoded using the video decoding unit Data and the real-time text information data decoded by the real-time text information decoding unit are combined by a mixer, and then output to the outside at the time of the display time information together with the audio data decoded by the audio decoding unit. A DVD audio reproducing device characterized by the following. 4. The DVD audio reproducing apparatus according to claim 3, wherein the external character code table used when decoding the real-time text information encoded data is a character of a language used in a specific country or region. A DVD audio reproducing apparatus, characterized in that it comprises means for changing to a code table. 5. The DVD audio reproducing apparatus according to claim 3, wherein an external character code table storage unit for storing the external character code table used by the real-time text information decoding unit for decoding processing, and a plurality of external character code tables are provided. An external character code table storage device that stores the external character code table storage device that stores only the external character code table used when the real-time text information decoding unit decodes the real-time text information from the external character code table storage device. And a control means for downloading to the DVD audio reproducing apparatus. 6. The DVD audio reproducing apparatus according to claim 3, wherein an external character code table storage unit for storing the external character code table used by the real-time text information decoding unit for decoding processing, and a plurality of external character code tables are provided. An external character code table storage device that stores the external character code table storage device that stores only the external character code table used when the real-time text information decoding unit decodes the real-time text information from the external character code table storage device. And a control unit that downloads the real-time text information encoded data of real-time text information using a character code other than the external character code table downloaded by the control unit, Playback control information of the real-time text information, Not store and display time information of the real-time text information in the storage device, and wherein the, DVD audio reproducing device. 7. The DVD audio reproducing apparatus according to claim 3, wherein the screen display position, the display size, the display color, and the presence / absence of the display when the real-time text information encoded data are output as video are preset. For real-time text information data display setting memory, the real-time text information decoding unit, the screen display position set in the real-time text information data display setting memory, the display size, the display color, and the A DVD audio reproducing apparatus, characterized in that the real-time text information encoded data is decoded into a video signal according to the setting of presence or absence of display. 8. The DVD audio reproducing apparatus according to claim 7, wherein the real-time text information data display setting memory includes the screen display position and the display size when the real-time text information encoded data is output as an image. A DVD audio reproducing apparatus, comprising an initial value for setting the display color and the presence or absence of the display. 9. The DVD audio reproducing apparatus according to claim 7, wherein the real-time text information decoding unit changes a display method of the real-time text information data in accordance with an image output format of the video coded data. A DVD audio reproducing apparatus, wherein the encoded real-time text information encoded data is decoded. 10. The DVD audio reproducing apparatus according to claim 7, wherein the real-time text information decoding unit displays a video signal in which the image output format of the video coded data is 16: 9 on a screen whose display unit is 4: 3. A DVD audio reproducing apparatus, characterized in that, when outputting, the real-time text information data is subjected to data code processing so that the real-time text information encoded data is output to a dark part at an upper part or a lower part of the screen. 11. The DVD audio reproducing apparatus according to claim 7, wherein the real-time text information decoding unit displays a video signal in which the image output format of the video encoded data is 4: 3 on a screen whose display unit is 16: 9. When outputting, for the language in which the real-time text information data allows vertical writing, real-time text information encoding is performed so that the real-time text information data is output vertically to the dark portion on the left or right side of the screen. A DVD audio reproducing apparatus, characterized in that data is decoded. 12. The DVD audio playback device according to claim 7, wherein the real-time text information decoding unit outputs the real-time text information when the image output of the encoded video data is fade-in or fade-out by Visual Effect. The text information data is faded in or out like the image output,
Alternatively, the DVD audio playback device is characterized in that the real-time text information coded data is decoded so as to be output without the Visual Effect. 13. The DVD audio reproducing apparatus according to claim 7, further comprising an external input unit for inputting an instruction to change a setting value of the real-time text information data display setting memory. apparatus. 14. The DVD audio reproducing apparatus according to claim 13, wherein the external input unit displays the real-time text information data in a vertical writing mode or a horizontal writing mode in accordance with an external input. A DVD audio reproducing apparatus, characterized in that a setting value of an information data display setting memory is changed. 15. The DVD audio reproducing apparatus according to claim 13, wherein when the external input unit outputs a video signal in which the video output format of the video encoded data is 16: 9 to a 4: 3 screen, In accordance with an input from the outside, the set value of the real-time text information data display setting memory is changed so that the real-time text information data is output to a dark portion at the top or bottom of the screen. Playback device. 16. The DVD audio reproducing apparatus according to claim 13, wherein when the external input unit outputs a video signal in which the image output format of the video encoded data is 4: 3 to a 16: 9 screen, For the language in which the real-time text information data allows vertical writing, in response to an external input,
A set value of the real-time text information data display setting memory is changed so that the real-time text information data is output vertically to a dark portion on the left side or the right side of the screen. 17. The DVD audio reproducing apparatus according to claim 13, wherein the external input unit receives an external input when the image output of the video coded data is output by fading in or out by Visual Effect. According to, changing the setting value of the real-time text information data display setting memory so as to output the real-time text information data by fading in or out like the image output, or without Visual Effect. A DVD audio reproducing apparatus, characterized in that 18. The DVD audio reproducing apparatus according to claim 2, wherein the input processing unit is separated by the input processing unit when the storage device is filled with real-time text information separated by the input processing unit. The new real-time text information is overwritten on the old real-time text information already stored in the storage device and stored in the storage device. 19. The DVD audio reproducing apparatus according to claim 1, wherein when the reproduction control information of the real-time text information separated by the input processing unit or the real-time text information encoded data includes an error, A DVD audio reproducing apparatus, comprising: an error processing unit that does not display the real-time text information. 20. The DVD audio reproducing apparatus according to claim 1, wherein when the reproduction control information of the real-time text information separated by the input processing unit or the real-time text information encoded data includes an error, A DVD audio reproducing apparatus, characterized by comprising an error processing unit for displaying a video indicating that there is an error in real-time text information. 21. The DVD audio reproducing apparatus according to claim 1, wherein the real-time text information is not displayed when the display time information of the real-time text information separated by the input processing unit includes an error. A DVD audio reproducing device, comprising: 22. The DVD audio reproducing apparatus according to claim 7, wherein the real-time text information display setting memory includes the reproduction control information or the real-time text information encoded data of the real-time text information separated by the input processing unit. When an error is included in, an external input unit for inputting an instruction to set whether or not to display the error in the real-time text information in the video output is input is provided. DVD audio playback device. 23. A DVD audio reproducing method for reproducing audio, video, real-time text information, additional information, etc. digitally encoded according to the DVD audio standard, and reproducing a multiplex encoded stream multiplexed in packet units, The multi-coded stream includes a plurality of packs, each of the plurality of packs includes at least one packet, the packet includes a packet header and packet coded data, and the packet coded data is packet voice coded. Data, packet video coded data, or any one of packet real-time text information coded data, from the packet containing the real-time text information coded data, real-time text information coded data,
An input processing step of separating the reproduction control information including the language code, the character set code, the text data length, the repeat flag, and the maximum display time of the real-time text information from the display time information in the packet header; And a real-time text information decoding step of decoding real-time text information encoded data based on the information separated in the processing step. 24. The DVD audio reproducing method according to claim 23, wherein the input processing step includes the real-time text information encoded data separated in the input processing step,
The data storage step of storing the reproduction control information of the real-time text information and the display time information of the real-time text information in a storage device as one data format of the real-time text information, wherein the real-time text information decoding step includes the data A DVD audio reproducing method, characterized in that the real-time text information encoded data stored in the storage device in the storing step is decoded. 25. The DVD audio reproducing method according to claim 24, wherein the text included in the real-time text information encoded data stored in the data storing step is based on the display time information stored in the data storing step. The real-time text information decoding step of decoding the encoded data using the text data length of the real-time text information included in the reproduction control information and an external character code table; and a packet header of the video encoded data in the packet header. A video decoding step of decoding the encoded video data by a certain display time information, and decoding the encoded audio data by the display time information in the packet header of the encoded audio data An audio decoding step for The video data decoded in the video decoding step and the real-time text information data decoded in the real-time text information decoding step are combined in a mixer, and then displayed together with the audio data decoded in the audio decoding step. And a step of externally outputting the time of the time information. 26. The DVD audio reproducing method according to claim 25, wherein the external character code table used in the real-time text information decoding step is changed to a character code table of a language used in a specific country or region. A method for playing back DVD audio, comprising: 27. The DVD audio reproducing method according to claim 25, wherein only the external character code table used for decoding the real-time text information is stored from an external character code table storage device that stores a plurality of external character code tables. And a download step of downloading to the external character code table storage unit that stores the external character code table used for the decoding process in the real-time text information decoding step. 28. The DVD audio reproducing method according to claim 25, wherein only the external character code table used when decoding the real-time text information from an external character code table storage device that stores a plurality of external character code tables. Including a download step of downloading only once to an external character code table storage unit that stores the external character code table used in the decoding process in the real-time text information decoding step, and in the data storing step of the input processing step,
The real-time text information encoded data of real-time text information using a character code other than the external character code table downloaded in the downloading step, reproduction control information of the real-time text information, and display time information of the real-time text information. Is not stored in the storage device. 29. The DVD audio reproducing method according to claim 25, wherein the screen display position, the display size, the display color, and the presence / absence of the display are set when the real-time text information encoded data is output as a video. Of the real-time text information data display setting step, the real-time text information decoding step, the screen display position, the display size, the display color set in the real-time text information data display setting step, and the display A DVD audio reproducing method, characterized in that the real-time text information encoded data is decoded into a video signal according to a display setting of presence or absence of. 30. The DVD audio reproducing method according to claim 29, wherein in the real-time text information data display setting step, the screen display position, the display size when the real-time text information encoded data is output as a video, A DVD audio reproducing method, characterized in that display values of the display color and the presence / absence of the display are set as preset initial values. 31. The DVD audio reproducing method according to claim 29, wherein the real-time text information decoding step changes the display method of the real-time text information data according to an image output format of the video encoded data. A DVD audio reproducing method, characterized by decoding real-time text information encoded data. 32. The DVD audio reproducing method according to claim 29, wherein in the real-time text information decoding step, a video signal in which the video output format of the video coded data is 16: 9 is displayed on a screen whose display section is 4: 3. When outputting, the real-time text information encoded data is decoded so that the real-time text information data is output to a dark part at an upper part or a lower part of the screen. 33. The DVD audio reproducing method according to claim 29, wherein in the real-time text information decoding step, a video signal of an image output format of the video encoded data of 4: 3 is displayed on a screen of 16: 9 on a display unit. When outputting, for the language in which the real-time text information data allows vertical writing, the real-time text information code so that the real-time text information data is output vertically to the dark portion on the left side or the right side of the screen. A DVD audio reproducing method, characterized in that the encoded data is decoded. 34. The DVD audio reproducing method according to claim 29, wherein in the real-time text information decoding step, the image output of the video coded data is a visual effect.
When the fade-in or the fade-out is output by t, the real-time text information data is output by performing the fade-in or the fade-out similarly to the image output or without the visual effect. A DVD audio reproducing method characterized by performing a decoding process. 35. The DVD audio reproducing method according to claim 29, wherein the real-time text information data display setting step includes an external input step of changing a display setting value of the real-time text information data in response to an external input. A method for reproducing DVD audio, comprising: 36. The DVD audio reproducing method according to claim 35, wherein the external input section step is performed in response to an external input.
A DVD audio reproducing method, characterized in that the setting value of the display of the real-time text information data is changed so that the real-time text information data is displayed vertically or horizontally. 37. The DVD audio reproducing method according to claim 35, wherein in the external inputting step, when a video signal in which the video output format of the video encoded data is 16: 9 is output to a 4: 3 screen, A DVD audio reproducing method, characterized in that the set value of the display of the real-time text information data is changed so as to output the real-time text information data to a dark part at the top or bottom of the screen according to an input from the outside. 38. The DVD audio reproducing method according to claim 35, wherein in the external inputting step, when a video signal in which the image output format of the video encoded data is 4: 3 is output to a 16: 9 screen, In response to an input from the outside, for the language in which the real-time text information data allows vertical writing, the real-time text information is output vertically to the dark portion on the left side or the right side of the screen. A DVD audio reproducing method, characterized in that a setting value of display of information data is changed. 39. The DVD audio reproducing method according to claim 35, wherein in the external input step, when an image output of the video encoded data is output by fading in or out by Visual Effect, an external input is performed. According to the real-time text information data,
A DVD audio reproducing method, characterized in that the set value of the display of the real-time text information data is changed so as to be output with fade-in or fade-out as in the image output, or without Visual Effect. 40. The DVD audio reproducing method according to claim 24, wherein in the input processing step, when the storage device stored in the data storage step is filled with real-time text information separated in the input processing step, A DVD audio reproducing method, characterized in that the new real-time text information separated in the input processing step is overwritten on the old real-time text information already stored in the storage device and stored in the storage device. 41. The DVD audio reproducing method according to claim 23, wherein when the reproduction control information or the real-time text information encoded data of the real-time text information separated in the input processing step includes an error,
A DVD audio reproducing method, comprising: an error processing step of not displaying the real-time text information. 42. The DVD audio reproducing method according to claim 23, wherein when the reproduction control information of the real-time text information separated in the input processing step or the real-time text information encoded data includes an error,
A DVD audio reproducing method, characterized by including an error processing step of displaying an error in the real-time text information on a video. 43. The DVD audio reproducing method according to claim 23, wherein when the display time information of the real-time text information separated in the input processing step includes an error, the real-time text information is not displayed. A method for reproducing DVD audio, comprising: 44. The DVD audio reproducing method according to claim 29, wherein the real-time text information display setting step is the reproduction control information of the real-time text information separated in the input processing step or the real-time text information encoded data. Contains an error,
A DVD audio reproducing method, comprising an external input step of setting whether or not to display an error in real-time text information in video output according to an external input.