JP2001285783A - Dvd audio disk still image reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the changeover timing of a still image reproduced together with the sound of a DVD audio disk is automatically switched at a timing stored on the disk or the timing arbitrarily set by a reproducing device and an operator can not recognize at which timing the still image is to be switched. SOLUTION: All reproducing information regarding the still images to be reproduced on the basis of the timing stored on the disk 1 is stored in a reproducing information memory 36, the residual time before the still image reproduced and displayed from the stored contents is switched to the next still image is calculated in a control part 30 and information is synthesized with the reproduced still image in a still image display synthesis part 14 and displayed at a display part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for reproducing a still image in a DVD audio disk reproducing apparatus, and more particularly to reproduction information of a still image displayed to an operator during reproduction of an audio track. Is provided.

[0002]

2. Description of the Related Art In general, a compact disk (CD) and a reproducing apparatus therefor are provided as an audio / audio reproducing apparatus. As a CD-only reproduction medium, a video CD or the like has been provided which replaces a conventional analog record disc, stores an image (moving image or still image) in a storage area thereof, and reproduces the image together with an audio signal.

[0003] In recent years, DVD audio standards have been formulated to use a DVD (Digital Versatile Disc) having a further storage capacity as an audio medium for the CD. This DVD audio is C
D stores multi-channel audio information, which could not be achieved in D, on a disc to provide a user with high-quality and high-quality audio reproduction.

According to the DVD audio standard, audio still video (Audio Still Video) is used in addition to main audio signals.
l Video (hereinafter referred to as ASV) can store still image information on a disc, and a DVD audio player can play ASV together with audio.

[0005] The ASV is specified to reproduce one or more pieces of still image information during a sound reproduction period, with one audio track as a minimum unit. It is switched and reproduced within the reproduction period.

[0006] The switching of the still image is performed by the DVD audio reproducing apparatus based on the still image reproduction control information stored on the disk.

[0007] Switching of a plurality of still images assigned during this specific audio reproduction period is controlled by the DVD audio reproduction device reading information in the DVD audio format in addition to switching by the operator.

[0008]

By the way, in the above-mentioned switching, the control information stored on the disc determines whether one of the reproduction period or the range of the reproduction period of the still image to be reproduced is minimum or maximum. Contains. The DVD audio playback device automatically switches a still image during a track playback period based on the playback period included in the control information. Here, when the reproduction period of the still image is represented by the minimum and maximum ranges, the reproduction period of the still image is determined by setting an arbitrary period within the minimum and maximum ranges to the DVD.
A plurality of still images selected by the audio playback device are automatically switched.

In this case, when there are a plurality of still images displayed simultaneously with the reproduced audio sound, the reproduction period of each still image is determined by the reproduction period information stored on the DVD audio disk. Is not included in the stored information of the reproduced still image.

[0010] Therefore, since the still image stored on the disk has no information on the reproduction period of the display, simply displaying the image read from the disk does not display the reproduction period. Cannot tell when the still image being played is switched.

For example, when a sentence is included in a still image, the operator may be absorbed in the first sentence, and may switch to the next still image before finishing reading. There is a problem of giving dissatisfaction to the

[0012]

In order to solve the above-mentioned problems, a DVD audio disk reproducing apparatus of the present invention comprises a plurality of still picture information, audio sound information and still picture information which are reproduced together with main reproduced sound. A data reading unit for reading storage information of a DVD audio disc in which control information for reproduction is stored; and a data stream for converting the information read by the data reading unit into audio audio information, still image information, and control information. A demultiplexer unit that separates the audio and audio information as well as a decoding unit that decodes still image information;
Having a display unit for displaying the decoded still image,
The period for reproducing each still image on the display unit is determined from the reproduction period information of the still image stored in the control information, and the remaining time until each still image whose reproduction period is determined is switched to the next still image. Is displayed on the display unit together with the still image.

Further, in the DVD audio disk reproducing apparatus according to the present invention, the control unit also displays the number of still images displayed corresponding to the audio sound being reproduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

1. 1. Configuration of DVD Audio Disc Playback Device FIG. 1 shows an example of a configuration of a DVD audio disc playback device according to the present invention. Reference numeral 1 denotes a DVD audio disk, which stores audio information and still image information reproduced by the apparatus. Information stored on the DVD audio disk 1 is read by the optical pickup 2. Servo information for controlling the position of the optical pickup 2 is written on the DVD audio disk 1. The data reading unit 3 sends the read servo information to the control unit 30, and the control unit 30 determines the position of the optical pickup 2. Perform control.

DV read by optical pickup 2
The reproduced data of the still image and the sound on the D audio disk is sent from the data reading unit 3 to the data decoder unit 4 to correct the error, and then sent to the demultiplexers 6 and 8 via the ASVU buffer 5 and the track buffer 7.

Control information for reproducing the DVD audio disk 1 is sent from the data decoder unit 4 to the control unit 30.

The control unit 30 temporarily stores the control information received from the data decoder 4 in the control information memory 34, and reproduces the audio and audio (to be reproduced) based on the operation information of the operator input through the operation input unit 32. Song), generates reproduction information of the specified song, and stores it in the reproduction information memory 36. The reproduction information includes information of the specified audio sound, information of a still image displayed during reproduction of the audio sound, and information of a position where the information is recorded on the DVD audio disc 1.

The control unit 30 sends a control signal for reproducing the DVD audio disk 1 to the optical pickup 2 based on the generated reproduction information, and instructs the data reading unit 3 to read the data. And audio image information and still image information read from the. The read still image information is
It is stored in the VU buffer 5.

The audio / audio information read from the DVD audio disk 1 is similarly error-corrected by the data decoder 4 and then temporarily stored in the track buffer 7.

The still picture information stored in the ASVU buffer 5 and the audio / sound information stored in the track buffer 7 are sent to demultiplexers 6 and 8 based on a reproduction control signal from the control unit 30, respectively. It is converted into an information stream as well as an audio audio information stream.

The audio / audio information stream converted by the demultiplexer 8 is decoded into a digital audio signal by the audio / audio decoder 12 and further converted into an analog signal by the D / A conversion circuit 18 to output an audio / audio signal.

Similarly to the above, the still image information stream separated by the demultiplexer 6 is decoded into an image signal by the still image decoding unit 10 and sent to the still image display / synthesizing unit 14. The data conversion and the still image decoding unit 10 and the audio / audio decoding unit 1 in the above demultiplexers 6 and 8
2 is performed in synchronization with program reproduction by a reproduction control signal sent from the control unit 30.

In the reproduction of the still image, the still image display / synthesizing unit 14 controls the remaining time of the currently displayed still image based on the reproduction period of each still image stored in the reproduction information memory 36. Is combined with the image information sent from the still image decoding unit 12.
The synthesized image is displayed on the display unit 16.

2. DVD Audio Format Next, the format of the control information stored on the DVD audio disk 1 will be described. FIG. 2 shows the DV
It is a figure showing the logical structure of D audio. The logical structure of DVD audio is the structure of volume space (Volume and
File Structure and DVD Audio Space (DVD Audio)
Zone) and DVD video space (DVD Video Zone) and other DV
It consists of D space (DVD Other Zone). DVD
The audio space consists of one simple audio manager (SAMG) and one audio manager (Audio Mana
ger: AMG) and one audio still video set (ASV)
S) and 1 to 99 audio title sets (Au
dio_Title_Set: ATS).

The AMG manages the configuration of the DVD audio disk, and as shown in FIG. 2A, an AMGI (Audio Manager Information) file containing control information, a VOB (Video Object) for the AMG menu.
AMVO_VOBS (Video Object Set f
or AMG Menu) file and an AMGI backup file (Backup for AMGI).

Each ATS has an ATSI (Audi) containing control information.
o Title Set Information) file, AOB title file (AOTT_AOBS), and ATSI backup file (Backup for ATSI).

The structure of the AOTT_AOBS file is as shown in FIG. 2B. The ID number of the AOB reproduced by each ATS and the IOB of the AOB
It is composed of the cell ID number included in the D number. Information for reproducing each ATS is described in a program chain information table in the ATSI file.

FIG. 3 shows the configuration of the ATSI. ATSI is ATSI
It consists of a management table (ATSI_MAT) and an ATS program chain information table (ATS_PGCIT).

FIG. 4 shows the configuration of the ATS_PGCIT. ATS_PG
The CIT is ATS_PGCITI describing the information, and 1 to n (n
ATS_PGCI search pointer up to ≦ 99 (ATS_PGCI_S)
RP # 1-n) and ATS program chain information (ATS_PGCI) corresponding to each search pointer. This AT
As shown in FIG. 5, S_PGCI is general information of ATS_PGC (ATS_PGC).
C_GI), ATS program information table (ATS_PGIT), ATS
It is composed of a cell playback information table (ATS_C_PBIT) and an ATS still image playback information table (ATS_ASV_PBIT).

FIG. 8 shows the contents of ATS_ASV_PBIT. This table stores search pointer information (ATS_ASV_P) of ASV playback information to be played back in accordance with each program included in the ATS.
BI_SRP # 1 to #m) and ATS_A specified by each ATS_ASV_PBI_SRP
It is composed of SV playback information (ATS_ASV_PBI # 1 to #n). Here, the relationship between n and m is n ≦ m ≦ 99. That is, one ATS_ASV_PBI can be specified from a plurality of search pointer information (ATS_ASV_PBI_SRP).

FIG. 9 is a diagram showing the configuration of ATS_ASV_PBI_SRP. Each ATS_ASV_PBI_SRP is an ASV unit number (ASV
U), ASV_DMD that defines the display mode of ASV, each A
Start address information (A
TS_ASV_PBI_SA) and end address information (ATS_ASV_PBI_E)
A).

ATS_ASV_PBI is also called D_List, and ASV_DMD
The playback information of the ASV corresponding to the display mode defined by the above is stored. The contents of this D_List are
The content differs depending on the playback mode of ASV. FIG. 10 shows the contents of D_List corresponding to each of the following modes.

In ASV reproduction, two types of slide shows and three types of browserable pictures are defined as types of reproduction based on management information stored in the disk. Here, the slide show is used when the display timing of the ASV and the playback of the AOB are synchronized, and in other cases, the slide show is used.
A browseable picture is used. The display of the ASV in the slide show is controlled during the display period stored on the disc, and is displayed at a specific timing during the playback period of the AOBS. There are two types of slide shows depending on the display order of the ASVs.

The first slide show is called a sequential slide show as shown in FIG. 61), and the ASV is a display sequence and a display period stored on the disk (these are described in ATS_PGCI). Is displayed).

FIG. 10A shows the contents of D_List in the present sequential slide show. One ASV number (1 byte) in the set of ASVs (ASVU) to be played back by this program,
Byte), FOSL_BTNN (1 byte), program number (1 byte) reproduced at the start of display of this ASV, timing to start display (4 bytes) (This timing is a set of ASVs reproduced by each program. , The playback start timing of the first ASV is set to 0, and expressed as an integrated value until the next switching time), the effect mode at the start of playback and its period (1 byte), the effect mode at the end of playback and its period (1 byte).

As shown in FIG. 62), the second slide show is called a random / shuffled slide show, and the ASV indicates the display period stored on the disc in an order set arbitrarily by the playback device. Played during.

FIG. 10B shows the contents of D_List in the random / shuffle slide show. The contents are as shown in FIG. 10 (a) except that the ASV number is suspended.
Is the same as (Because the order of ASVs to be played is arbitrarily selected from ASVU). In the above slide show, the user cannot change the display timing from the playback device.

FIG. 7 schematically shows the three types of browserable pictures. Fig. 7 1) is a sequential browserable picture, and the display order of ASV is
The order stored on the disk is used. The display period of each ASV is the period stored in the disk, or if the maximum value and the minimum value of the display period are stored for each ASV, the playback device can be arbitrarily set between the maximum value and the minimum value. Will be one of the selected periods. Note that the right side of the figure is a diagram showing the transition of the ASV when the ASV is switched by the user operation during the display period of each ASV.
Here, prev. Is the AS that was played back immediately before during the playback of a certain ASV.
Nex indicates that the operation to return to V was performed from the operation input unit 32.
t is the ASV scheduled to be played next during a certain ASV playback
Indicates that the operation for reproducing is performed by the operation input unit 32. Also, home selection is a series of ASVs that are scheduled to be played
This indicates that the operation input unit 32 has performed an operation of selecting one ASV (in this case, ASV # 2) which is a reference set by the control unit 30 according to the recorded contents of the disc.

FIG. 10C shows the contents of D_List in the present sequential browsable picture. ASV number (1 byte), hold (1 byte), FOSL_BTNN (1 byte), Home D_List number (1 byte), maximum period (2 bytes), minimum period (2 bytes), effect mode at the start of playback and its period (1 byte), and various information of the effect mode at the end of reproduction and its period (1 byte). Here, if the value of the maximum period is the same as the value of the minimum period, it means that one playback period has been given to this ASV. Is set by the playback device.

FIG. 7 2) shows a random / shuffleable browseable picture. The display order of each ASV is
The playback device selects arbitrarily. The display period of each ASV is the period stored in the disk, or if the maximum value and the minimum value of the display period are stored for each ASV, the playback device can be arbitrarily set between the maximum value and the minimum value. Will be one of the selected periods. The right side of the figure is a diagram showing the transition of the ASV when the ASV is switched by a user operation during the display period of each ASV.

FIG. 10D shows the contents of the D_List in the random / shuffled browsable picture. FIG.
This is the same as FIG. 10C except that the ASV number specified in 0 (c) is suspended. (Played ASV
Because the order is arbitrarily selected from ASVU).

FIG. 7 3) shows a sequential browsable picture without an automatic transition (the display period is infinite). The display order of the ASVs is the order in which they are stored on the disk, but since the playback period of each ASV is not specified, the switching of each ASV is performed only by a user operation.

In the case of a sequential browsable picture without this automatic transition, the contents of D_List are as shown in FIG.
The configuration is the same as that of (c), but the values of the maximum period and the minimum period are 0000h.

The actual reproduction of the audio disc is as described above.
Based on the program information described in ATS_PGCI, each AOB
Is read from the disk and decoded and reproduced. When the still image information is allocated to each AOB (when the still image information to be reproduced is described in ATS_ASV_PBIT in the ATS_PGCI), the reproducing apparatus performs ATS_ASV_PBIT
Further, based on the related information, the still image information is read from the disk, decoded, reproduced, and displayed on the display device. The present invention applies to each ASV played in each of the above presentations.
The reproduction display period is displayed.

3. Regarding the operation of the present invention, the playback device reads data from the disc 1 with the optical pickup 2, and among the read data, control information relating to the reproduction of the DVD audio disc 1 is sent from the data decoder 4 to the control unit 30, After being converted into a prescribed format, it is temporarily stored in the control information memory 34.

The control unit 30 reads out the control information temporarily stored in the control information memory 34 in response to a user operation on the operation input unit 32, checks a program (ATS_PGCI) for reproducing audio information, and checks for one track. Is stored in the reproduction information memory 36, and the reproduction information memory 3
If the reproduction of the audio / audio information (AOB) and the still image has been designated based on the stored reproduction information of No. 6, the still image information (ASV) is read from the disk 1 by the optical pickup 2 and the data decoder 4 is read. Through,
Still image information is stored in the ASVU buffer 5 and audio audio information is stored in the track buffer 7.

Based on the control signal from the control unit 30, the ASVU
The still image information stored in the buffer 5 is sent to the demultiplexer 6 and converted into a still image data stream.
Similarly, the audio / audio information stored in the track buffer 7 is sent to the demultiplexer 8 and converted into an audio data stream.

The generated audio data stream is decoded into audio information by the audio audio decoding unit 12 according to an instruction from the control unit 30 based on the control information from the reproduction information memory 36, and is converted into an analog signal by the D / A conversion circuit 18. After that, it is output as audio sound.

Similarly, the still image data stream is decoded into still image information by the still image decoding unit 10 according to an instruction from the control unit 30 based on the control information from the reproduction information memory 36, and the decoded still image information is It is sent to the still image display synthesizing unit 14. The control unit 30 includes a reproduction information memory 36
The remaining display time is calculated based on the display period of the still image and the elapsed time from the start of the display of the still image stored in (1), and the calculated remaining time is transmitted to the still image display synthesizing unit 14.

The still image display synthesizing section 14 synthesizes the still image information sent from the still image decoding section 10 and the remaining time information sent from the control section 30, and displays the same on the display section 16.

The remaining time is determined from the search pointer (ATS_ASV_PBI_SRP) for reproducing the still image specified by the audio title (ATS) specified by the user for the reproduction of the ASV scheduled to be reproduced and the display mode of the ASV. Then, it can be easily calculated from the content of the D_List.

That is, if the audio title (ATS) to be reproduced is determined, the ATS program information (ATSI_P
GCI) from the ASV information played back by the ATS (A
The number of SVs, the display mode of the ASV, and the playback timing or playback period of each ASV) are determined by the following procedure and stored in the playback information memory 36.

(1) In the case of a slide show When an ASV is displayed in either a sequential slide show or a random / shuffled slide show, the display timing of each ASV is D_Li as shown in FIG. 61).
The control unit 30 reads out the display timing of the ASV to be reproduced from the D_List stored in the control information memory 34 and stores it in the reproduction information memory 36. The control unit 30 calculates the remaining time by calculating the difference between the cumulative playback period of the ASV from the first ASV playback start timing to the present and the playback timing of the next ASV, and calculates the remaining time via the still image display synthesis unit 14, The display unit 16 displays the remaining reproduction time together with the still image.

(2) In the case of the browserable picture In the case of the sequential browserable picture or the random / shuffleable browserable picture accompanied by the automatic transition, the playback period stored on the disc 1 of each ASV to be played is the maximum period. When the two values are the minimum period, the control unit 30 arbitrarily sets the reproduction period of each ASV to a period between the permitted maximum period and the minimum period, and stores the set period in the reproduction information memory 36. I do.

The control unit 30 calculates the remaining playback time by calculating the difference between the playback period of each ASV stored in the playback information memory 36 and the elapsed playback time, and sends it to the still image display synthesis unit 14 for display. The remaining time is displayed on the unit 16 together with the still image.

In the above case, the control unit 3 of the reproducing apparatus
0 sets the playback period of each ASV arbitrarily, but this period setting can be determined by the user between the maximum period and the minimum period.

The above (1) slide show and (2)
In both cases of the browserable picture, the control unit 3
0 indicates information for displaying on the display unit 16 how many ASVs are to be reproduced from the total number of ASVs reproduced in the ATS stored in the reproduction information memory 36 and the number of ASVs whose display has been completed. It can also be sent to the still image display synthesizing unit 14 and displayed.

It should be noted that the control information memory 34
It is desirable to store the control information (AMGI and ATSI) stored on the disc 1 when is loaded in the playback device. The playback device displays the control information stored in the control information memory 34 on the display unit 16,
The user can easily select audio information desired to be reproduced.

[0060]

As described above, according to the present invention, the remaining reproduction time of each ASV reproduced by the ATS program is displayed on the display section 16, so that the time until switching to the next ASV is displayed. Therefore, compared with the case where there is no display of the remaining time, there is an effect that the user can confirm the information of the ASV according to the time until the switching of the reproduced ASV.

Further, according to the present invention, the total number of ASVs and the number of ASVs that have been reproduced by the ATS that is reproducing audio and audio are displayed from the information stored in the reproduction information memory 36. Now you can know the total number of unplayed ASVs in the playing ATS.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a DVD audio playback device according to the present invention.

FIG. 2 illustrates a DVD audio logical block structure.

FIG. 3 illustrates an ATSI file structure.

FIG. 4 is a diagram illustrating the structure of ATSI_PGCIT.

FIG. 5 is a view for explaining the structure of ATS_PGCI.

FIG. 6 illustrates an AVS slide show.

FIG. 7 is a diagram illustrating an AVS browserable picture.

FIG. 8 is a view for explaining the structure of ATS_ASV_PBIT.

FIG. 9 is a view for explaining the structure of ATS_ASB_PBI_SRP.

FIG. 10 illustrates a structure of D_List.

[Explanation of symbols]

 Reference Signs List 1 DVD disk 2 Optical pickup 3 Data reading unit 4 Data decoder 5 ASVU buffer 7 Track buffer 6, 8 Demultiplexer 10 Still image decoding unit 12 Audio sound decoding unit 14 Still image display synthesizing unit 16 Display unit 18 D / A conversion circuit 30 Control unit 32 Operation input unit 34 Control information memory 36 Playback information memory

Claims (3)

[Claims] An information from a DVD audio disk in which audio and audio information and at least one still image information and audio audio information reproduced together with the audio information and control information for reproducing the still image information are stored on the disk. A data reading unit for reading data, a demultiplexer unit for separating the information read by the data reading unit into audio data, still image information, and control information into individual data streams; A decoding unit for decoding the image information, a display unit for displaying the decoded still image, and a playback period of the still image stored in the control information for a period for playing back at least one still image on the display unit Information and determine the remaining time until each determined still image is switched to the next still image. DVD audio disc reproducing apparatus characterized by comprising a control unit for displaying on the display unit together with the image. 2. The DVD audio disk reproducing device, wherein the control unit displays the total number of still images displayed during the audio / audio reproduction period together with the display of the remaining reproduction time of the still image to be displayed. Claim 1
2. The DVD audio disc reproducing device according to 1. 3. The DVD audio disk reproducing device, wherein the control unit displays on the display unit a list of audio sound to be reproduced, a list of still images reproduced corresponding to the audio sound, and a reproduction period, and 2. The DVD audio disc reproducing apparatus according to claim 1, wherein the period is variable according to an operation input from an operator.