JP2002369124A - Disk reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk reproducing apparatus wherein when reproducing a disk reproduced in the past, such a partial information as its information picture-plane is so skipped that its reproduction can be started from its main- body portion and the waiting time before its main-body portion is reproduced can be reduced. SOLUTION: After storing in a memory 16 the identifying information for identifying an optical disk D, a controlling circuit 17 so decides whether the identifying information of the reproduced disk D coincides with the identifying information stored in the memory 16 or not, as to output the information of the main-body portion of the disk D without outputting its information when both identifying informations coincide with each other. Consequently, when reproducing an optical disk reproduced in the past, the waiting time before its main-body portion is reproduced can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk reproducing apparatus for reproducing video and audio information recorded on a disk, and more particularly to an apparatus for skipping and reproducing a part of information such as a notice image.

[0002]

2. Description of the Related Art Many disk reproducing apparatuses for reproducing digital data (bit stream) obtained by encoding / compressing a video signal and an audio signal from a disk are widely used. As such a disc, for example, C
D (Compact Disc), MD (Mini D)
isc) and DVD (Digital Versatil)
e Disc).

For example, in the case of reproducing a video such as a movie such as a DVD system, the main program title (main part; for example, a part of the movie itself, also referred to as a main part) is reproduced before a main program title is reproduced. An announcement (warning) screen is often displayed. Examples of the notification screen include a warning about an illegal copy of a copyrighted work and a warning about parental control such as age of the main body. Then, the notification screen is recorded on the DVD disc so as to be displayed before the main body portion is reproduced. In some cases, a control command is recorded so as to require some operation by the user when proceeding from the notification screen to the reproduction of the main body, together with the information on the notification screen.

[0004]

Such a notice screen is always displayed before the reproduction of the main body portion, but is also displayed when a disc that has already been reproduced is reproduced. In such a case, the notification screen is recognized only by the viewer as a waiting time until the reproduction of the main body portion is started, and the time for displaying the notification screen is troublesome. Further, when some operation is required for reproducing the main body from the notification screen, the user may feel that the usability is poor.

[0005] Further, even when a main body portion which is originally one such as a feature-length movie is recorded on a plurality of discs, the notification screen is displayed when the first disc is reproduced. Also, a similar notification screen is displayed every time the second and subsequent discs are reproduced. The display of such a notification screen is a troublesome operation, as described above, as a waiting time until the reproduction of the main body is started.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made in order to reduce the waiting time until the main body portion is reproduced.
It is an object of the present invention to provide a disk reproducing apparatus capable of skipping a part of information such as a notification screen when reproducing a disk that has been reproduced in the past and reproducing the same from a main body.

[0007]

According to a first aspect of the present invention, there is provided a disk reproducing apparatus in which information of a main body portion is recorded in a predetermined area in a volume structure in a predetermined unit.
A disc reproducing apparatus comprising: a reproducing unit that reads information from a disc on which information for notification is recorded and reproduces the information, and outputs information reproduced by the reproducing unit, and stores identification information for identifying the disc. And discriminating information of the disc to be reproduced by the reproducing means is determined to match with the identification information stored in the storing means. And control means for outputting the information of

According to a second aspect of the present invention, in the disk reproducing apparatus according to the first aspect, when the information of a predetermined unit recorded in a predetermined area is one, the control unit performs the first step. It is characterized in that information of two predetermined units is output as information of the main body part.

According to a third aspect of the present invention, in the disk reproducing apparatus according to the first or second aspect, when the control unit has a plurality of pieces of information of a predetermined unit recorded in a predetermined area, It is characterized in that information of a predetermined unit in which sub-information different from the longest one of a plurality of predetermined units of information is set is not output as notification information.

According to a fourth aspect of the present invention, there is provided a disk reproducing apparatus according to the first to third aspects, wherein the storage means has a plurality of storage positions and can store a plurality of disks;
It is characterized by comprising a transport means for selectively transporting the disc from the storage means to the reproducing means.

According to a fifth aspect of the present invention, in the disk reproducing apparatus according to the first to fourth aspects, the information to be output includes at least a video.

[0012]

FIG. 1 is a schematic block diagram of an optical disk reproducing apparatus according to an embodiment of the present invention using an optical disk as a disk as a recording medium, and FIG. 2 is a schematic circuit block diagram of FIG. In this embodiment, a description will be given of an optical disk using, for example, a DVD. However, the present invention is not limited to this embodiment.

Reference numeral 1 denotes a storage unit serving as storage means capable of storing 14 optical disks (DVD disks; conforming to the DVD standard) as recording media. ,..., 1n. The storage state of the optical disk at each storage position of the storage unit 1 (whether or not the disk is stored) is detected by a control circuit described later based on the state of a sensor switch (not shown).

Reference numeral 2 denotes a disk drive block as a reproducing means for reproducing information from an optical disk on which information is recorded, and is constituted by a circuit block described later. Reference numeral 3 denotes a lift as a transporting means for selectively taking out the optical disk stored in the storage unit 1 based on the control of a control circuit described later and moving the optical disk to a turntable (not shown) of the disk drive block 2. 1 constitutes a changer. Reference numeral 4 denotes a control unit in which a part of a circuit block is provided together with a control circuit. Reference numeral 5 denotes an operation unit in which an input device and a display panel described later are provided.

In FIG. 2, reference numeral 6 denotes an optical pickup for reading information recorded on the optical disk D and outputting a read signal therefrom; 7, an RF amplifier for amplifying a read signal from the optical pickup 6; A motor for rotating the optical disk D with a turntable not provided; 9 a drive circuit for focus, tracking, slave control in the optical pickup 6 and drive control of the motor 8; 10 a response to an output signal from the RF amplifier 7 DSP for outputting a read signal from the optical disc D as digital data (bit stream) and controlling the drive circuit 9 to perform various servo controls
It is a servo circuit. The disk drive block 2 includes the optical pickup 6, RF amplifier 7, motor 8, drive circuit 9, and DSP servo circuit 10.

Reference numeral 11 denotes demodulated digital data (bit stream) output from the DSP servo circuit 10 at the time of recording, together with error correction, demodulation and analysis to separate presentation data and navigation data. Is a DVD decoder for selectively outputting sub-image data such as main video data and sub-information, audio data or subtitles, which are separated and extracted according to the above control.

Reference numeral 12 denotes a video decoder which decodes compressed video data (for example, in the MPEG format) output from the DVD decoder 11 and outputs a video signal, and 13 denotes a sub-picture (caption or the like) under the control of a control circuit described later. A sub-picture decoder 14 which inputs data relating to the sub-picture), decodes the decoded data, and outputs the decoded data as a video signal. The sub-picture decoder 14 converts the compressed audio data (for example, MPEG or AC-3) output from the DVD decoder 11 The audio decoder has a built-in D / A converter and outputs an audio signal to audio equipment (not shown).
When the output from the audio decoder is not an analog signal but digital data, the D / A converter may be connected to the output terminal and configured differently from the audio decoder.

The reference numeral 15 combines and outputs video signals output from the video decoder 12 and the sub-picture decoder 13, respectively, and further generates an on-screen display (OSD) as required under the control of a control circuit described later. This is a mixer that combines the OSD with the previous video signal and outputs the video signal. The video signal output from the mixer 15 is supplied to a display (not shown) and displayed based on the video signal.

Reference numeral 16 denotes a non-volatile memory serving as storage means for storing identification information for identifying an optical disk which has been reproduced in the past, and for storing, for example, language data of audio and subtitles selected at the time of reproduction, and a display. Various data in reproduction control, such as screen size data (screen aspect ratio such as 16: 9) at the time of display output, audio selection data (compression method), and parental restriction data, are also stored. The memory 16 is configured to be able to store a plurality of pieces of identification information, for example, like a ring buffer memory.

As the identification information, text information such as a volume name, a title name, or a producer name recorded as a text data manager (TXTDT_MG) in a VMGI of a DVD video zone of an optical disk described later is stored. When all the main body parts are recorded on one optical disk, the year of creation of the optical disk recorded on the part recording the volume and file structure constituting the volume space of the optical disk together with the DVD video zone; Month, day, time (hour,
(Minutes, seconds), all or part of the information (for example, 4 bytes at a specific location), and information of the last recording sector recorded in the lead-in area of the optical disc and indicating how much information is recorded on the optical disc. You may make it memorize | store as identification information.

Reference numeral 17 denotes a control circuit as control means for controlling the entire apparatus including disc identification and output control.
Display including selection of output data in the D decoder 11, control operations in the RF amplifier 7 and the DSP servo circuit 10 and coefficient setting therefor, decoding operation control in the video decoder 12 and the sub-picture decoder 13, and OSD control in the mixer 15. Performs control and the like. Further, the control circuit 17 performs a reproduction control operation according to an operation of an input device described later.

Reference numeral 18 denotes an input device operated by a user to issue a control instruction to the control circuit 17, and is constituted by, for example, a plurality of keys, or receives a signal from a remote controller and decodes and instructs the signal. It is constituted by a signal supplied to the control circuit 17 as a signal.

In such a device, normal reproduction in which one of the optical disks is selected from a state in which a plurality of optical disks are stored in the storage unit 1 is performed as follows.

When the input device 18 instructs reproduction of the optical disk stored in any of the storage positions, the control circuit 17 causes the lift 3 to move the optical disk at the specified storage position to a turntable (not shown) of the disk drive block 2. And reading of information (bit stream) from the optical disc D is started. That is, DSP
Under the control of the servo circuit 10, the optical disk D
While the focus, tracking, and thread control of the optical pickup 6 are performed, a signal corresponding to information recorded by the optical pickup 6 is read from the optical disc D, and digital data (bit stream) based on the read signal is converted. It is input to the DVD decoder 11. The DVD decoder 11 demodulates and analyzes the read digital data (bit stream) to separate video data, data relating to sub-pictures and audio data, and outputs video data to the video decoder 12 and data relating to sub-pictures to the sub-picture decoder. 13, and outputs the audio data to the audio decoder 14.

Under the control of the control circuit 17, the video decoder 12 decodes the video data and outputs a video signal, and the sub-picture decoder 13 outputs the sub-picture display instruction from the control circuit 17 and the sub-picture display. In response to the display language selection instruction, the data relating to the sub-picture is decoded so that the video (for example, English) of the sub-picture data of the selected display language is displayed at the position indicated in the data relating to the sub-picture. Outputs the video signal of the sub-picture. Then, the video signal output from the video decoder 12 and the video signal output from the sub-picture decoder 13 are mixed and combined by the mixer 15 and output as one video signal, and the video signal from the mixer 15 is input. The display reproduces and displays a video in which the video of the selected sub-picture is combined with the video of the video data. The audio data input to the audio decoder 14 is decoded into an audio signal, the audio signal is supplied to an audio device (not shown), and the audio based on the audio data is reproduced and output.

Here, the file structure of information recorded on an optical disc in a DVD will be described with reference to FIGS.

A DVD video zone in which data as a DVD video is recorded has one video manager (VM).
G) and one or more video title sets (VTS; one title often corresponds to one movie in the case of a movie, for example). In the present invention, the VTS is a predetermined unit, and the area that is the VTS means a predetermined area in the volume structure.

The information (data) of the main body is VTS
The notification information (e.g., image data) is recorded in the VMG and when the V
It may be recorded as one VTS in the same row as the TS.

VMG is video manager information (VMG
I), a VMG menu video object set (VMGM_VOBS), and a backup of the VMGI. The VMGI stores management information of the entire DVD video zone, and the VMGM_VOBS records image data and audio data of a title menu. I have.

VTS is video title set information (VT)
SI), a VTS menu video object set (VTSM_VOBS), a title video object set (VTSTT_VOBS), and a VTSI backup. Image data and audio data of one or more submenus, and VTSTT_VOBS include D
One or more VD main (main body) image data and audio data are recorded.

The menu or title video object set (VOBS) includes one or more video objects (VOBs), and the VOB includes one or more cells (C). That is, the VOBS has one or more cells.

The cell includes one or more video object units (VOBUs), each of which includes one navigation pack (NV_PCK), a plurality of video packs (V_PCK), and a plurality of audio packs (A_PC).
K), and a plurality of sub-picture packs (SP_PCK). The NV_PCK records attributes for controlling the reproduction of the VOBU in which the NV_PCK is recorded, and the VOBU address data before and after the search (including the immediately preceding and succeeding tens of tens of VOBUs), and the V_PCK records video such as a movie. (Video) data is recorded, A_PCK records audio data reproduced in synchronism with the image data, and SP_PCK reproduces subtitles mixed with the image data recorded in the V_PCK. And other sub-picture data.

The image (video) data recorded in the V_PCK includes a plurality of V_PCKs contained in one VOBU.
One group (Group of Pi) by PCK
structure; GOP). The GOP is a DVD that uses MPEG2 as an image compression technique. In MPEG2, one I picture (intra-frame coded image) and a plurality of P pictures (inter-frame forward prediction coded image) ) And a B picture (bidirectionally coded image).

Data recorded on a DVD optical disk is roughly classified into navigation data and presentation data.

As the navigation data, VMG
I, VTSI and NV_PCK, for example, VMG
In I, the start address of each VTS is recorded, and in VTSI, the total playback time of the titles contained in the VTS and the VTS
Is recorded, and the NV_PCK records the reproduction time from the head of the cell to which the VOBU belongs to the VOBU and the start addresses of the preceding and following VOBUs.

As the presentation data, V_
There are PCK, A_PCK, and SP_PCK, and as described above, data of reproduced images and sounds is recorded.

Next, the operation of the control circuit according to one embodiment of the present invention will be described with reference to the flowchart of FIG.

First, under the control of the control circuit 17 in accordance with the operation of the input device 18, a desired mode is set by operating the input device 18 in a mode in which the display of the notification screen is skipped and the main unit is reproduced. When the reproduction of the optical disk is instructed, the optical disk D is first mounted on the disk drive block 2.

The control circuit 17 starts reproduction of the optical disk D, reads the VMGI and the identification information of the optical disk D (S1), and makes a comparison judgment whether the same identification information as the read identification information is stored in the memory 16 (S1). S2). If the same identification information as the read identification information is not stored in the memory 16, the identification information is stored in the memory 16 (S3), and the first play program chain FP # PGCI described in the VMGI # MAT in the VMGI.
, The reproduction is performed sequentially from the information to be reproduced first in the normal reproduction (S4).

When the same identification information as the read identification information is stored in the memory 16, the VMGI # MAT is also used.
It is determined whether the number of recorded VTSs is one or more based on the number of VTSs VTS_Ns described in (S).
5).

When the control circuit 17 determines that the number of VTSs is one, it determines that the notification information is recorded in the VMG and starts reproducing the VTS without reproducing and outputting the presentation data in the VMG. (S6). V
The start address of the TS is described as VTS_SA of the title search pointer TT_SRP existing only once in the title search pointer TT_SRPT in the VMGI.

When it is determined that there are a plurality of VTSs, the control circuit 17 sequentially determines each VTS based on the information of TT_SRPT.
Of VTSI_MAT in the VTSI is read out. Then, the length (storage data amount) of each VTS is
Last address VT of VTS described in I_MAT
From the S_EA, it is determined which VTS is the longest VTS (S7). Further, the setting of the sub-information described in the VTSI_MAT which is read simultaneously with the reading of the VTS_EA (for example, in the attribute table VTS_AST_ATRT for audio, the setting of sub-pictures such as subtitles for Attribute table V
With reference to TS_SPST_ATRT), the setting of the longest VTS sub-information (for example, the type of language (English,
Japanese, German, etc.), the number of channels, and the type of language for subtitles) and the setting of the sub-information of other VTS are compared. At this time, the setting of the sub-information to be compared may be made with respect to the setting of all the sub-information. However, the setting of the sub-information may be only the type of the audio language, the type of the subtitle language only, or both. As described above, it is not necessary to compare all the set items, and the comparison may be performed for the setting of one or a plurality of sub-information.

As a result of the comparison, whether or not each VTS matches is stored in the memory 16 (S8; the number of each VTS and its comparison result are stored correspondingly). It is determined that the VTS is recorded, and control is performed so as not to output from the apparatus. At this time, if the setting of the sub information of the longest VTS matches all the other VTSs, it is determined that the information for notification is recorded in the VMG.

Then, the control circuit 17 performs reproduction based on FP_PGCI (at this time, no video or the like is output from the device), and obtains the address of the VTS reproduced first. Referring to the comparison result stored in the memory 16, the comparison result of the VTS number is “does not match”
, The VTS is output from the PGCI described in the VOB without reproducing and outputting the VTS.
Get the address of S. When "match", the VTS is read / reproduced and output (S
9). After that, similarly, when the address of the next VTS is obtained,
Based on the comparison result stored in the memory 16, the VT
Control whether or not to output S is performed.

Thereafter, the reproduction output is executed until the reproduction output of the information to be reproduced ends or until the input device 18 instructs the reproduction stop.

Thus, when playing back an optical disk having identification information stored in the memory 16 and having been played back in the past, the portion where the notification screen is assumed to be recorded is not output but the main body portion is output. Is output. As a result, the waiting time until the start of the main body portion is reduced, and the reproduction start operation is speedily performed, so that the user is comfortable.

Further, even when one program (main part) is recorded over a plurality of disks as in a feature-length movie, after the first optical disk is reproduced,
When playing the subsequent optical disc, for example, by setting the identification information as a title or a producer name, the disc can be regarded as a disc that has been played back in the past. Playback is started. Therefore, it is possible to reduce the number of video breaks at the time of switching from the first optical disk to the next optical disk, and it is possible to provide a high-performance disk reproducing device for the user.

[0048]

According to the present invention, as is apparent from the above description, the identification information for identifying the disk is stored in the memory, and the identification information of the disk to be reproduced matches the identification information stored in the memory. And if they match,
By outputting the information of the main unit without outputting the information for notification, it is possible to reduce the waiting time until the reproduction of the main unit when reproducing a disc that has been reproduced in the past.

Even when the main body portion, which is originally one such as a feature-length movie, is recorded on a plurality of discs, the video is not changed when the first optical disc is replaced with the next optical disc. Gaps can be reduced.

As a result, it is possible to provide a high-performance and easy-to-use disk reproducing apparatus for the user.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an optical disk reproducing device as a disk reproducing device according to an embodiment of the present invention.

FIG. 2 is a schematic circuit configuration diagram of FIG. 1;

FIG. 3 is a diagram illustrating a file structure of a DVD.

FIG. 4 is a diagram illustrating the structure of a VOBS of a DVD.

FIG. 5 is a flowchart illustrating an operation according to an embodiment of the present invention.

[Explanation of symbols]

 D Optical disk 1 Storage section (storage means) 2 Disk drive block (reproduction means) 3 Lift (transportation means) 6 Optical pickup 9 Drive circuit 10 DSP servo circuit 11 DVD decoder 16 Memory (storage means) 17 Control circuit (control means) 18 Input device

Continued on the front page F term (reference) 5C052 AA02 AB03 AB04 CC06 CC11 DD04 DD08 EE03 5C053 FA24 GB06 GB12 GB37 HA33 JA16 JA21 KA05 LA06 5D044 BC03 CC04 DE50 FG18

Claims (5)

[Claims] 1. A reproducing means for recording information of a main body portion in a predetermined area in a predetermined area of a volume structure and reading and reproducing information from a disc on which information for notification is recorded, wherein the reproducing means is provided. A disc reproducing apparatus for outputting information reproduced by the storage means for storing identification information for discriminating the disc; and identification information stored in the storage means for disc identification information to be reproduced by the reproducing means. Judge whether they match, and if they match,
A disk reproducing apparatus comprising: a control unit that outputs information of a main body portion without outputting notification information. 2. The information processing apparatus according to claim 1, wherein, when there is one information of a predetermined unit recorded in a predetermined area, the control means outputs the information of the one predetermined unit as information of a main body part. Item 2. The disk reproducing device according to Item 1. 3. When there are a plurality of pieces of information of a predetermined unit recorded in a predetermined area, the control means determines the sub-information set as the longest one of the information of the plurality of predetermined units. 3. The disk reproducing apparatus according to claim 1, wherein information of a predetermined unit in which different sub-information is set is not output as notification information. 4. A storage device comprising a plurality of storage positions capable of storing a plurality of disks at a plurality of storage positions, and a transport device for selectively transporting the disks from the storage device to the reproducing device. 4. The disc reproducing device according to 3. 5. The disk reproducing apparatus according to claim 1, wherein the output information includes at least a video.