JP5590948B2 - Disc playback apparatus and disc playback method - Google PatentsDisc playback apparatus and disc playback method Download PDF
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- JP5590948B2 JP5590948B2 JP2010087983A JP2010087983A JP5590948B2 JP 5590948 B2 JP5590948 B2 JP 5590948B2 JP 2010087983 A JP2010087983 A JP 2010087983A JP 2010087983 A JP2010087983 A JP 2010087983A JP 5590948 B2 JP5590948 B2 JP 5590948B2
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The present invention relates to a disk playback apparatus that plays back information recorded on a DVD (Digital Versatile Disk), which is an optical disk, and more particularly to a disk playback apparatus that can play back playback conditions (such as audio / subtitle information) set by a user. The present invention relates to a disc playback method.
2. Description of the Related Art In recent years, disk playback apparatuses that record information such as audio signals and video signals on an optical disk (hereinafter referred to as a DVD or a disk) conforming to the DVD-Video standard or the DVD-Audio standard and reproduce the information have become widespread. Yes. In the DVD-Video standard, a maximum of 8 audio languages and a maximum of 32 subtitle languages (sub-pictures) can be recorded.
In addition, in the disc playback apparatus (player), the user can arbitrarily set the playback conditions (for example, the language of audio and subtitles) during playback. Therefore, if information on a plurality of audio languages and subtitle languages is recorded on the DVD and information that matches the audio / subtitle language set on the player side is included in the DVD, the player sets the setting information to the DVD-Video standard. Can be stored and used as a playback control variable (SPRM) defined in the above, and playback can be performed according to playback conditions set by the player. Also, once the user has set the desired playback conditions (audio / caption information, etc.) in the player, the DVD can be played back in the set audio language and subtitle language thereafter.
Incidentally, some DVDs are set so as to be forcibly played back in a specific audio / subtitle language desired by the disc producer. In the case of such a DVD, even if any audio / subtitle language is set on the player side, if a specific audio / subtitle language is set on the disc side, the DVD must be played as it is. It is defined in the standard. Therefore, in this case, reproduction of the DVD is started in a voice / subtitle language that is not intended by the user.
For example, if the mandatory setting information “Audio is Japanese, subtitles are off” is described on the disc, the user can set “Audio for English, Subtitles for Japanese” on the player side. Playback starts with unintended audio / subtitle information. This operation is as intended by the disc producer, but playback is performed in a language that is not desired from the user's perspective, so the user can call the menu information and reset the audio / subtitle information to his / her preference. There is a need to. Some users may misunderstand that this is a player malfunction.
When resetting audio / subtitle information to his / her preference, the user needs to call the menu information and reset it while operating the menu screen, which is troublesome. In particular, in-vehicle disk playback devices have a problem that such resetting is very inconvenient because it hinders operation.
Patent Document 1 discloses a playback device, and discloses an example of checking a language setting set in a playback device and notifying the application server when an application content acquisition request is made to an application server on a network. ing. In Patent Document 1, content in a desired language set by a user in a player is downloaded and displayed. However, it does not disclose how to deal with the case where playback of audio / subtitle information is set on the disc side.
In a conventional disc playback device, when a disc set to be forcibly played back in a specific audio / subtitle language desired by the disc producer is played, playback starts with audio / subtitles not intended by the user. Therefore, the user needs to reset the audio / subtitle information to his / her preference. Some users may misunderstand that this is a player malfunction.
In view of such circumstances, an object of the present invention is to provide a disc playback apparatus and a disc playback method capable of performing playback with the user's selection as the highest priority without ignoring the setting of the disc manufacturer. To do.
According to a first aspect of the present invention, there is provided a disc reproducing apparatus according to the present invention, wherein a pickup unit for reading information recorded on an optical disc, a reproduction processing unit for reproducing information read by the pickup unit, and reproduction conditions for reproducing the information are set. a condition setting unit capable of setting by the user, when the pre-specified reproduction condition on the optical disc is set, after regeneration at the particular reproduction condition in the pre-command region of the start of reproduction, the particular reproduction When the comparison result matches the playback condition set by the user and the comparison results match, the playback process is continued under the specific playback condition, and when the result is different , playback under the playback condition specified by the user is performed. And a control unit that controls the reproduction processing unit so as to shift.
According to a sixth aspect of the present invention, there is provided a disc reproducing method according to the present invention, comprising: a pickup unit that reads information recorded on the optical disc; and holding information on reproduction conditions set by a user in a storage unit; When a specific playback condition is set in advance on the optical disc when playing back, a playback is performed with the specific playback condition in the pre-command area at the start of playback, and then the specific playback condition and the storage unit Compared with the reproduction conditions held, if the comparison results match, the reproduction process is continued under the specific reproduction conditions, and if different , the reproduction is controlled under the reproduction conditions held in the storage unit. It is characterized by.
With the disc playback apparatus of the present invention, playback with priority given to user selection can be performed without ignoring the disc manufacturer's settings, and the trouble of resetting audio / subtitle information etc. to his / her preference can be saved. be able to.
Hereinafter, an embodiment of a disk reproducing apparatus of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing the overall configuration of a disc playback apparatus 100 (hereinafter also referred to as a player 100) of the present invention. In FIG. 1, reference numeral 11 denotes a DVD that is an optical disk (hereinafter simply referred to as a disk 11), in which data is recorded in accordance with the DVD-Video standard. The data hierarchical structure will be described later. The disk 11 is rotated at a constant linear velocity by the spindle motor 12. Information reproduction from the disk 11 is performed by the optical pickup 13 (pickup unit). The disk 11 is irradiated with laser light, and the data recorded on the disk 11 is read by the reflected light.
The optical pickup 13 is controlled to move in the radial direction of the disk 11 by the feed motor 14 and determines the reproduction position. The servo control unit 15 controls the rotation of the spindle motor 12 according to a control signal supplied from a system controller 33 and the like which will be described later, and performs tracking control, focus control, and drive control of the feed motor 14 of the optical pickup 13. Do.
The RF amplifier 16 amplifies the RF signal corresponding to the data read by the optical pickup 13 and transmits it to the next stage. The RF amplifier 16 separates the focus control signal and the tracking control signal from the RF signal and sends these control signals to the servo control unit 15.
The servo control unit 15 controls an actuator (not shown) of the optical pickup 13 based on a focus control signal so that the light beam is always just focused on the disk 11. Further, the actuator is controlled based on the tracking control signal, and the movement of the optical pickup 13 in the tracking direction is controlled. Thereby, the data is reproduced accurately.
The digital signal processing unit 17 digitizes the RF signal from the RF amplifier 16, performs demodulation processing and error correction processing of the digitized signal, and stores data obtained in the process of signal processing by the digital signal processing unit 17 in the RAM 18. To store. Further, the control signal is separated from the digital signal, and the separated control signal is sent to the servo control unit 15 and a system controller 33 described later.
The stream separation unit 19 separates the signal output from the digital signal processing unit 17 into an audio stream, a main picture stream, and a sub-picture stream, and supplies them to an audio / video processing unit 20 that is a reproduction processing unit. The main picture stream is a signal compressed in accordance with the MPEG2 format, and includes video information. The sub-picture stream is a signal compressed according to the run-length compression method, and includes subtitle information and the like.
The audio decoder 21 decodes the audio stream separated by the stream separation unit 19 and outputs a digital audio signal. The digital audio signal output from the audio decoder 21 is converted into an analog audio signal by the D / A converter 22, and the analog audio signal is output from the speaker 23 via a power amplifier (not shown).
The video decoder 24 decodes the main picture stream separated by the stream separation unit 19. The sub picture decoder 25 decodes the sub picture stream separated by the stream separation unit 19. The video processor 26 digitally synthesizes the main picture output from the video decoder 24 and the sub-picture output from the sub-picture decoder 25.
The RAM 27 temporarily stores data obtained during the decoding process performed by the audio decoder 21 and data obtained as a result of the process. The RAM 28 temporarily stores data obtained during the decoding process performed by the video decoder 24 and data obtained as a result of the process. The RAM 29 temporarily stores data obtained during the decoding process performed by the sub-picture decoder 25 and data obtained as a result of the process.
The video encoder 30 converts the synthesized data output from the video processor 26 into a video signal for display. The video signal output from the video encoder 30 is supplied to a display device 31 such as a liquid crystal panel to display an image.
The operation unit 32 is a remote controller, for example, and has a plurality of operation buttons for performing various operations such as reproduction, stop, fast forward, and volume setting. In addition, the operation unit 32 initially sets a reproduction condition desired by the user (for example, audio / subtitle language), instructs a setting change of the audio / subtitle language, etc. in response to an inquiry from the disc playback apparatus 100, It is also used when the cursor in the menu screen displayed on the display device 31 is moved to make various selections. Therefore, the operation unit 32 also functions as a condition setting unit that sets the reproduction condition by the user.
The system controller 33 includes a CPU, a ROM, a storage unit, and the like, and is a control unit that controls the overall operation of the player 100 according to a program stored in the ROM. The system controller 33 receives various instruction signals from the operation unit 32, a signal from the digital signal processing unit 17, and a signal from the stream separation unit 19, and receives the servo control unit 15, the digital signal processing unit 17, and the stream separation unit 19. And the video processor 26 is controlled. The system controller 33 is connected to a RAM 34 and temporarily stores data obtained by various processes performed under the control of the system controller 33.
In the disc playback apparatus 100 of the present invention, a pre-command (PRE_CMD) of the pre-command (PRE_CMD) is used when playing back the disc 11 in which specific playback conditions (for example, playback in audio / subtitles in a specific language) are set in advance by the disc manufacturer. It is characterized in that the playback process is temporarily performed according to the playback conditions set on the disk 11 during the processing period, and immediately thereafter, playback is performed under the playback conditions set by the user.
Hereinafter, the operation of the embodiment of the present invention will be described. In the DVD-Video standard, the playback sequence of menu screens, titles, etc. is defined by one or more program chains PGC, and program chain information PGCI is recorded on the disc 11 in order to define the PGC configuration. Yes.
FIG. 2 is a diagram showing a playback structure of the program chain PGC. The PGCI includes a pre-command PRE_CMD to be executed at the start of PGC playback, a plurality of programs PG, a post command POST_CMD to be executed at the end of the PGC, and a description Next_PGCN (not shown) of the PGCI to be executed next. PGCI defines the program PG included in the PGC and the playback order of the program PG.
FIG. 3 is a diagram for explaining the data hierarchical structure of the disk 11. The hierarchical structure of data recorded on the disk 11 is determined in accordance with the DVD-Video standard, and a lead-in area is provided on the inner periphery side of the disk 11 and a lead-out area is provided on the outer periphery side. A volume space including a DVD video area is provided.
As shown in FIG. 3, the DVD video area includes a video manager VMG as management information and one or more video title sets VTS # 1 to VTS # n as content information. The management information VMG includes video manager information VMGI, a video object menu video object set VMGM_VOBS, and a VMGI backup VMGI_BUP. The VMGI that is video management information includes a title search pointer table TT_SRPT, FP_PGCI, VMGM_PGCI, and the like.
FP_PGCI is a description of the PGC to be reproduced first when the reproduction of the disk 11 is started. For example, the commercial video is first reproduced by FP_PGCI, and after the commercial video is reproduced, the display is switched to the menu screen. A playback sequence in which the main part is played is defined. VMGM_PGCI is a PGCI for controlling the reproduction of the entire title.
In addition, files of individual video title sets (for example, VTS # n) include video title set information VTSI which is management information of the title, video object set menu video object set VTSM_VOBS, video title set title video object set VTSTT_VOBS ( Video content) and VTSI backup VTSI_BUP.
Each video title set VTS includes video data compressed according to the MPEG standard, audio data compressed (or uncompressed) according to a predetermined standard, and sub-picture data subjected to run length compression according to a predetermined rule. Various information for reproducing data is stored.
The management information VTSI includes a description of video title set program chain information VTS_PGCI, program title information VTSM_PGCI for the video title set menu, and the like.
Further, the above VMGM_PCGI, VTSM_PCGI, and VTS_PCGI include the Next_PGCN indicating the PGC to be executed next after the end of the PGC playback, the above-described PRE_CMD, and the definition of POST_CMD. Each VOBS of VMGM_VOBS, VTSM_VOBS, and VTSTT_VOBS has one or more video objects VOB, and each VOB has one or more CELLs.
Returning to FIG. 2, each program PG includes one or more CELLs, and a cell command C_CMD that is a command to be executed after CELL reproduction can be defined for each CELL. Each CELL is composed of a plurality of video object units (VOBU). The VOBU includes, in addition to the navigation pack (NV_PCK), a plurality of audio packs (A_PCK), a plurality of video packs (V_PCK), It can have multiple sub-picture packs (SP_PCK). Video data is stored in V_PCK, audio data is stored in A_PCK, and sub-picture data is stored in SP_PCK.
On the other hand, in FIG. 2, a navigation command (Navigation Command: hereinafter referred to as NaviCMD) is recorded in each pre-command PRE_CMD, and data is reproduced according to the navigation command. When executing a navigation command (NaviCMD), navigation parameters are used as variables.
The navigation parameters include a system parameter (SPRM) and a general parameter (GPRM). Each storage area (storage unit) is provided in the player 100. SPRM and GPRM are set or updated according to the execution of the navigation command, and are used as variables when the navigation command is executed thereafter.
The operation of the player 100 can be controlled by setting the SPRM value using the navigation command (NaniCMD). As shown in FIG. 4, for example, 24 system parameters (SPRM) are prepared, and SPRM (0, 1, 2, 3,...) Includes fixed information such as a menu description language, an audio stream number, and a sub-picture stream number. Are assigned, and SPRMs (21 to 23) are prepared as spares for function expansion. The content of the command of NaviCMD (navigation command) is free to the disc producer, and the stream can be changed, and the player executes the playback process according to this command.
In addition, the player 100 allows the user to arbitrarily set the playback conditions (sound, subtitle language, etc.) at the time of playback, and the player 100 uses the playback control variable (SPRM) defined by the DVD video standard. To keep as. Therefore, once the user sets his / her favorite audio and subtitles in the player 100, the SPRM defined by the audio stream number and sub-picture stream number is retained, and thereafter the DVD is set in the audio language and subtitle language set by the user. Can be played.
However, some DVDs are set so as to be forcibly played back in a specific audio / subtitle language desired by the disc manufacturer. Even if the subtitle language is set, it is stipulated in the DVD standard that audio / subtitle language playback set on the disc side must be played as it is. Therefore, in this case, reproduction of the DVD is started in a voice / subtitle language that is not intended by the user.
Therefore, in the embodiment of the present invention, the reproduction process is performed as follows. FIG. 5 is an operation explanatory diagram showing the reproduction procedure in the present invention, and the reproduction process is performed under the control of the system controller 33. In FIG. 5A, normally, information on the disk 11 is read (READ), and a plurality of CELLs are decoded in accordance with the pre-command PRE_CMD. The CELL includes cell command C_CMD and information on the location where video and audio data to be decoded are recorded, and the video and audio data are acquired from another location based on this information. After the reproduction of the plurality of CELLs, the following processing is executed according to the post command POST_CMD.
If the audio stream number N set in the system parameter (SPRM) means playback in English, and the disc manufacturer specifies the audio stream number (N), audio data in English from the disc 11 Is read and played back. If the user wishes to reproduce audio in Japanese and the audio stream number M means reproduction in Japanese, the user operates the menu screen to set the audio stream number (SPRM) to the audio stream number (SPRM). M number) can be set. Therefore, when the user selects the audio stream number: M, audio data in Japanese is read and can be reproduced.
As shown in FIG. 5B, the PRE_CMD area includes a plurality of navigation commands (NaniCMD). Here, in the disc 11, when the NaviCMD is set so that the disc producer plays back in a specific audio language (eg, audio stream number: N), the user sets it as shown in FIG. The SPRM (audio stream number: M number) information is temporarily saved. Saving means, for example, holding the SPRM information in a storage area of the storage unit provided in the control unit 33 so that there is no problem even if it is overwritten.
That is, in the case where the NaviCMD is set to be played back in English by the disc producer on the disc 11, the command (audio stream number: Nth playback) is first executed, and the audio stream number (Mth) is executed. This information is temporarily saved. Then, after executing the PRE_CMD process, the SPRM is compared. Here, if the audio language set by the disc producer matches the audio language set by the user, the reproduction is continued as it is.
On the other hand, if the speech language set by the disc manufacturer and the speech language set by the user do not match as a result of comparing the SPRMs, the saved SPRM (for example, audio stream number: No. M) is selected again and the subsequent Perform the decoding process. Accordingly, since the playback is performed in the voice language set by the user immediately after the processing of PRE_CMD, the playback of the disc is executed with the contents intended by the user.
In addition, since playback is performed once in the audio language intended by the disc manufacturer and then in the audio language set by the user, playback conforming to the DVD-Video standard can be performed without ignoring the disc manufacturer's settings. Done. The processing period of PRE_CMD is instantaneous, and the period of playback in the voice language set by the disc manufacturer is extremely short. Therefore, playback can be performed in the voice language set by the user without giving the user any sense of incongruity.
In the above description, the audio stream number is described. However, for the subtitle language, the sub-picture stream number is selected and the system parameter (SPRM) is set. In addition to voice and subtitle languages, SPRM can be set for angles, CM cuts, and the like. Further, in FIG. 5B, based on the result of comparing SPRMs, an example of reselecting a saved SPRM if there is a mismatch has been described, but after processing NaviCMD without comparing SPRMs, It is also possible to select the saved SPRM and execute the decoding process.
In this way, the disc playback apparatus of the present invention can perform playback with the user's selection as the highest priority without ignoring the disc manufacturer's settings, so the audio / subtitle language etc. can be reset to your liking This saves you time and effort. In addition, since it is played back in the audio / subtitle language set by the user, it is not mistaken for a player's malfunction as in the past.
Note that the user setting is not limited to the audio or subtitle language setting, and other settings (eg, angle setting, CM cut, etc.) are possible. The embodiments of the present invention are not limited to the above description, and various modifications can be made without departing from the scope of the claims.
DESCRIPTION OF SYMBOLS 11 ... Disk 12 ... Motor 13 ... Optical pick-up 14 ... Feed motor 15 ... Servo control part 16 ... RF amplifier 17 ... Digital signal processing part 18, 31 ... RAM
DESCRIPTION OF SYMBOLS 19 ... Stream separation part 20 ... Audio / video processing part 21 ... Audio decoder 24 ... Video decoder 25 ... Sub picture decoder 26 ... Video processor 30 ... Video encoder 31 ... Display apparatus 32 ... Operation part 33 ... System controller
- A pickup section for reading information recorded on the optical disc;
A reproduction processing unit for reproducing information read by the pickup unit;
A condition setting unit that allows a user to set a reproduction condition when reproducing the information;
When a specific playback condition is set in advance on the optical disc, after the playback under the specific playback condition in the pre-command area for starting playback, the specific playback condition and the playback condition set by the user If the comparison results match, the playback processing is continued under the specific playback conditions, and if they are different , the playback processing unit is controlled to shift to playback under the playback conditions specified by the user. A control unit,
A disc playback apparatus comprising:
- The reproduction processing unit can reproduce video / audio information including a plurality of main picture streams, audio streams, or sub-picture streams recorded on the optical disc,
2. The disc playback apparatus according to claim 1, wherein the condition setting unit allows the user to set playback in an arbitrary audio or subtitle language by designating the audio stream or sub-picture stream.
- The control unit compares the stream according to the playback condition set on the disc after the playback process of the pre-command area and the audio or subtitle language stream specified by the user, and if both streams match, the playback process is continued 3. The disc reproducing apparatus according to claim 2, wherein the disc playback device is controlled so as to switch to the audio or subtitle language stream specified by the user and to play back the audio stream or the subtitle language specified by the user if they differ.
- 3. The disc playback apparatus according to claim 2, wherein the control unit performs control so that playback is performed with an audio or subtitle language stream designated by the user after playback processing of the pre-command area.
- 3. The disc reproducing apparatus according to claim 2, wherein the condition setting unit can designate display / non-display of the subtitles.
- Having a pickup section for reading information recorded on the optical disc;
The playback conditions set by the user are stored in the storage unit,
When a specific reproduction condition is set in advance on the optical disc when reproducing the information read by the optical pickup, after the reproduction is performed under the specific reproduction condition in the pre-command area of the reproduction start , The playback condition is compared with the playback condition held in the storage unit, and if the comparison results match, the playback process under the specific playback condition is continued, and if different, the playback condition held in the storage unit is used. A disc playback method characterized by controlling playback.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|JP2010087983A JP5590948B2 (en)||2010-04-06||2010-04-06||Disc playback apparatus and disc playback method|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|JP2010087983A JP5590948B2 (en)||2010-04-06||2010-04-06||Disc playback apparatus and disc playback method|
|Publication Number||Publication Date|
|JP2011222069A JP2011222069A (en)||2011-11-04|
|JP5590948B2 true JP5590948B2 (en)||2014-09-17|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|JP2010087983A Expired - Fee Related JP5590948B2 (en)||2010-04-06||2010-04-06||Disc playback apparatus and disc playback method|
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|JP (1)||JP5590948B2 (en)|
Family Cites Families (4)
|Publication number||Priority date||Publication date||Assignee||Title|
|JPH10322640A (en) *||1997-05-19||1998-12-04||Toshiba Corp||Video data reproduction control method and video reproduction system applying the method|
|JP4167051B2 (en) *||2002-12-24||2008-10-15||アルパイン株式会社||DVD playback apparatus and audio / subtitle setting method thereof|
|JP4397343B2 (en) *||2005-04-06||2010-01-13||アルパイン株式会社||Disc player|
|JP2009170050A (en) *||2008-01-17||2009-07-30||Toshiba Corp||Device, method and program for reproduction|
- 2010-04-06 JP JP2010087983A patent/JP5590948B2/en not_active Expired - Fee Related
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