JP2005116114A - Optical disk playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk playback device having a function setting the permission of reproduction of only one of audio information and video information in an audio and video DVD. <P>SOLUTION: When a reproduction mode set by a mode setting means 221 is a video reproduction mode, a video title determination means 223 determines whether a title is that of the video information. When the result of this determination shows that the title is that of the video information, a title reproduction control means 225 reproduces the title. When the set reproduction mode is an audio reproduction mode, an audio title determination means 224 determines whether the title is that of the audio information. When the result of this determination shows that the title is that of the audio information, the title reproduction control means 225 reproduces the title. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention can also be played back on an optical disc having a video area for mainly recording video information including video information and audio information accompanying the video information, and an audio area for recording audio information mainly including audio information. The present invention relates to an optical disc reproducing apparatus.

Video DV conforming to the DVD video standard as a recording medium for recording video information such as movies
D is known. DVD refers to a digital versatile disc. Video DVDs are widely used as recording media for video information such as movies because of their large capacity.
In addition, audio DVDs based on the DVD audio standard, which are intended to record only audio information such as music, not video information such as movies, are also widespread. This audio DVD can record audio information corresponding to a plurality of CDs (compact discs) because of its large capacity as a DVD.

In recent years, an audio / video dual-use DVD in which an audio DVD and a video DVD are combined into one DVD is becoming widespread. Such an audio / video DVD has mainly a video area for recording video information including video information and audio information accompanying the video information, and an audio area for recording audio information mainly including audio information.
JP-A-11-265563

By the way, in a conventional optical disk reproducing apparatus capable of reproducing both audio and video DVDs, the audio information of a title (AOTT) recorded in the DVD audio format and the DVD video format are usually recorded on the audio and video DVD. All the video information of the title (AVTT) is played back, and the user
Although the title to be reproduced can be selected, it is not possible to select only the title (AOTT) title or only the title (AVTT) title. AOT
T is an abbreviation for Audio Only Title, and AVTT is an abbreviation for Audio Video Title.

Therefore, in this type of conventional optical disc playback device, the developer of the device can select a title, but since it is not known if the title is AOTT or AVTT, it is not possible to debug. And quality checks are difficult to perform, and it takes a lot of time, and the cost tends to increase accordingly. Also, in this type of conventional optical disc playback apparatus, the user can select a title, but the title is A
Whether it is OTT or AVTT is not known until after playback, so the selection range of the title was narrow for the user.

In the prior art described in Patent Document 1, an audio / video DVD can be played back, but only one of audio information recorded in the DVD audio format and video information recorded in the DVD video format. Cannot be reproduced, so the above-mentioned problems cannot be solved.

The present invention has been made in order to solve the above-described problems, and is recorded on an audio / video optical disk (audio / video DVD) recorded in the DVD audio format and the audio information recorded in the DVD video format. An object of the present invention is to provide an optical disc reproducing apparatus having a function that can be set so that only one of video information can be reproduced.

To achieve the above object, the invention of claim 1 is directed to a video area for recording video information mainly including video information and audio information accompanying the video information, and an audio area for recording audio information mainly including audio information. And a video playback mode for playing back video information of a title recorded in the video area, and an audio for playing back audio information of the title recorded in the audio area. A mode setting for setting any one of the playback modes and a normal playback mode for playing back the video information of the title recorded in the video area and the audio information of the title recorded in the audio area And the playback mode set by the mode setting means And a video title determination unit that determines whether the title is a title of video information when the determination result by the mode determination unit is a video playback mode. When the determination result by the mode determination unit is the audio playback mode, the audio title determination unit that determines whether or not the title is the title of the audio information, and the determination result of the video title determination unit is the video information Title reproduction control means for performing control to reproduce video information or audio information of the title when the determination result of the audio title determination means indicates a title of audio information, and the video title determination means Judgment result indicates the title of the video information. A title search means for searching for a next title and returning the process to the video title determination means or the audio title determination means when the determination result of the audio title determination means does not indicate the title of the audio information. There is provided an optical disk reproducing apparatus comprising a system controller having the above-described system controller.

In this configuration, when the user operates the operation unit to set the playback mode, in response to this, the mode setting means sets the playback mode of the apparatus. Then, the mode determination means determines whether the set playback mode is a video playback mode, an audio playback mode, or a normal playback mode. When the determination result by the mode determination means is the video playback mode, the video title determination means determines whether or not the title to be reproduced is the title of the video information. If the result of this determination is that the title is a title of video information, the title reproduction control means reproduces the title.

When the determination result by the mode determination means is the audio playback mode, the audio title determination means determines whether or not the title to be reproduced is the title of the audio information. When the determination result is that the title is the title of the audio information, the title reproduction control unit reproduces the title.

When the determination result of the video title determination means does not indicate the title of the video information, or when the determination result of the audio title determination means does not indicate the title of the audio information, the title search means searches for the next title, and the video title The processing is returned to the determining means or the audio title determining means.

According to this configuration, it is possible to set so that only one of the audio information and the video information can be reproduced in the audio / video optical disc. It becomes easier to perform quality checks, etc.
The required time is reduced, and the cost of the apparatus can be reduced accordingly. Also, since it is possible to select the title of the audio information and the title of the video information separately, the selection range of the title is widened, and a multipurpose function can be provided to the user.

The invention of claim 2 is also applicable to an optical disc having a video area for recording video information mainly including video information and audio information accompanying the video information, and an audio area for recording audio information mainly including audio information. In the reproducible optical disc playback apparatus, a video playback mode for playing back video information of a title recorded in the video area, and an audio playback mode for playing back audio information of a title recorded in the audio area are provided, and the video Control for playback in either the video playback mode or the audio playback mode in addition to the normal playback mode for playing back the video information of the title recorded in the area and the audio information of the title recorded in the audio area. Features a system controller that performs To provide that the optical disc playback apparatus.

In this configuration, when the set playback mode is the video playback mode, the video information of the title is played back. When the set playback mode is the audio playback mode, the audio information of the title is played back.

According to this configuration, it is possible to set so that only one of the audio information and the video information can be reproduced in the audio / video optical disc. It becomes easier to perform quality checks, etc.
The required time is reduced, and the cost of the apparatus can be reduced accordingly. Also, since it is possible to select the title of the audio information and the title of the video information separately, the selection range of the title is widened, and a multipurpose function can be provided to the user.

In the invention of claim 3, the system controller in the invention of claim 2 is set by the mode setting means for setting any one of the video playback mode, the audio playback mode and the normal playback mode, and the mode setting means. Mode determination means for determining what the playback mode is based on the disc management information, and when the determination result by the mode determination means is the video playback mode, whether or not the title is the title of the video information Video title determination means for determining, audio title determination means for determining whether the title is a title of audio information when the determination result by the mode determination means is an audio playback mode, and the video title determination means The determination result indicates the title of the video information, or the audio When the determination result of the title determination means indicates the title of the audio information, the title reproduction control means for controlling the reproduction of the video information or audio information of the title, and the determination result of the video title determination means determines the title of the video information. Title search means for searching for the next title and returning the processing to the video title determination means or the audio title determination means when not indicated or when the determination result of the audio title determination means does not indicate the title of the audio information Therefore, the audio / video optical disc can be set so that only one of the audio information and the video information can be reproduced.

As described above, according to the present invention, it is possible to set so that only one of audio information and video information can be reproduced in an audio / video optical disc. Makes it easier to perform debugging processing and quality checks, and the time required for them is reduced, and the cost of the apparatus can be reduced accordingly. Also, since it is possible to select the title of the audio information and the title of the video information separately, the selection range of the title is widened, and a multipurpose function can be provided to the user.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of an optical disc reproducing apparatus according to an embodiment of the present invention. The optical disk reproducing apparatus includes a spindle motor 5 that rotates the optical disk 1, an optical pickup 2 that emits a laser beam for reproducing information recorded on the optical disk 1 and receives reflected light from the optical disk 1, and the light. A sled 3 for moving the pickup 2 in the radial direction of the optical disc 1, and a spindle motor 5 and the sled 3 are driven in accordance with an instruction from the system controller 22 and an objective lens (not shown) built in the optical pickup 2 is provided. A servo control unit 4 is provided for performing control to move the focal position of the laser beam in the vertical direction and the horizontal direction with respect to the recording surface of the optical disc 1 by moving.

The optical disk reproducing apparatus also includes an RF amplifier 6 that amplifies an RF signal that is a read signal from the optical pickup 2 during reproduction of the optical disk 1, and an RF output from the RF amplifier 6.
A digital signal processing unit 8 that stores data generated by performing signal demodulation processing and error correction processing according to the data format of the optical disk 1 after converting the signal into digital data in the RAM 7, and digital according to instructions from the system controller 22 A stream separation unit 9 is provided that separates audio data, sub-picture data, and video data from the data stream output from the signal processing unit 8.

In addition, the optical disc reproducing apparatus receives audio data output from the stream separation unit 9 and performs a predetermined decoding process, and temporarily stores the data for performing the decoding process in the audio decoder 11. The RAM 10 to store, the sub-picture decoder 13 that inputs the sub-picture data output from the stream separation unit 9 and performs a predetermined decoding process, and temporarily stores the data to perform the decoding process in the sub-picture decoder 13 A RAM 12 to store, a video decoder 15 for inputting video data output from the stream separator 9 and performing a predetermined decoding process, and the video decoder 1
And a RAM 14 for temporarily storing data in order to perform the decoding process in FIG.

In addition, this optical disk reproducing apparatus combines the data output from the video decoder 15 and the data output from the sub-picture decoder 13 in accordance with an instruction from the system controller 22, and the video processor 17 outputs the data. A video encoder 18 for converting the synthesized data into a video signal for display and displaying an image on the display device 20, and D for converting the data output from the audio decoder 11 into an analog audio signal and supplying the analog audio signal to the speaker 19, for example. / A converter 16.

In addition, the optical disk playback apparatus controls the operation unit 21 having various operation keys such as a playback key for giving a playback instruction to the system controller 22 and a stop key for instructing a playback stop, and the entire apparatus. The system controller 22 is provided. The operation unit 21 may be a remote controller or an operation unit provided on the operation panel of the apparatus main body.

In addition, this optical disk reproducing apparatus performs a calculation process according to the flash ROM 23 storing a program and data for controlling each component of the apparatus and controlling the entire apparatus, and the program and data of the flash ROM 23. And a CPU 24 for controlling the system controller 22.

The system controller 22 is a component that characterizes the present embodiment.
Is an audio / video DVD, a video playback mode for playing back the video information of the title recorded in the video area of the audio / video DVD and an audio playback of the audio information of the title recorded in the audio area Mode setting means for setting any one of these modes, and a normal playback mode for playing back the video information of the title recorded in the video area and the audio information of the title recorded in the audio area 221 and a mode determination unit 222 for determining what the playback mode set by the mode setting unit 221 is based on the disc management information, and when the determination result by the mode determination unit 222 is the video playback mode, Whether the title is the title of video information Determining and a video title determining unit 223.

In addition, when the determination result by the mode determination unit 222 is the audio playback mode, the system controller 22 determines whether or not the title is the title of the audio information, and the video title determination unit 223. When the determination result indicates the title of the video information or when the determination result of the audio title determination unit 224 indicates the title of the audio information, the title reproduction control unit 225 performs control to reproduce the video information or the audio information of the title. And video title determination means 2
When the determination result of 23 does not indicate the title of the video information or when the determination result of the audio title determination means 224 does not indicate the title of the audio information, the next title is searched and the video title determination means 223 or the audio title determination Title search means 226 for returning the processing to the means 224 is provided.

FIG. 2 is a diagram showing a recording format of an audio / video DVD. As shown in FIG. 2, there are an audio area and a video area between the lead-in area and the lead-out area. A UDF (Universal Disk Format) having information for managing the format of a file recorded on the DVD is recorded immediately outside the lead-in area, followed by audio information management information (disk management information) in the audio area. A
MG (Audio Manager), ATSI (Audio Title Set I) indicating the title of audio information
information), AOB (Audio Object), which is the actual part of the audio information, is recorded, followed by ATSI, AOB, AOB, and ATSI. In the next video area, VMG (Video Manager) which is video information management information (disc management information), VTSI (Video Title Set Information) indicating the title of the video information, and VOB (Video Object) which is the actual part of the video information. ), VOB and VOB are stored.

Therefore, audio information in the audio area is reproduced in a reproduction format in accordance with the DVD audio standard, and video information in the video area is reproduced in a reproduction format in accordance with the DVD video standard. A title recorded in the DVD audio standard recording format is referred to as AOTT (Audio Only Title), and a title recorded in the DVD video standard recording format is referred to as AVTT (Audio Video Title).

FIG. 3 is a diagram for explaining only the title portion recorded on the audio / video DVD. In FIG. 3, the title T1 is AOTT, the title T2 is AVTT, the title T3 is AOTT, and the title T4 is AVTT. In the video playback mode in which the video information of the title recorded in the video area is played back, the AVTT title T2
And AVTT title T4. In the audio reproduction mode for reproducing the audio information of the title recorded in the audio area, the information is reproduced in the order of AOTT title T1 and AOTT title T3. Further, in the normal playback mode for reproducing the video information of the title recorded in the video area and the audio information of the title recorded in the audio area, the AOTT title T1 and the AVTT title T2
, AOTT title T3 and AVTT title T4 are reproduced in this order.

FIG. 4 is a flowchart for explaining processing according to the reproduction mode for the audio / video DVD in this embodiment. Processing according to the playback mode will be described with reference to this flowchart.

First, when the user operates the operation unit 21 to set the playback mode, in response to this, the mode setting means 221 of the system controller 22 sets the playback mode of the apparatus (step S1). And whether the set playback mode is a video playback mode for playing back video information of a title recorded in the video area, or an audio playback mode for playing back audio information of a title recorded in the audio area, Alternatively, the mode determination unit 222 determines whether the normal playback mode for reproducing the video information of the title recorded in the video area and the audio information of the title recorded in the audio area (step S2).

If the determination result by the mode determination unit 222 is the video playback mode, the video title determination unit 223 determines whether the title to be played is AVTT (step S3). If the result of this determination is that the title is AVTT, the title playback control means 225 plays back the title (step S8).
When it is not TT (for example, when title T1 is AOTT as shown in FIG. 3),
The title is not reproduced (step S5).

If the search has not been made to the last title (step S6), the title search means 226 searches for the next title (for example, title T2 as shown in FIG. 3) (
Step S7) and the process returns to step S2. As a result of the search, for example, title T2
Is AVTT (step S3), the video information of the title T2 is reproduced (step S8).

When the determination result by the mode determination unit 222 is the audio playback mode (step S2), the audio title determination unit 224 determines whether the title to be played is AOTT (step S4). The result of this determination is that the title is A0TT
If so, the title reproduction control means 225 reproduces the title (Step S
8) When the title is not AOTT, the title is not reproduced (
Step S5). If the last title has not been searched (step S6)
) The title search means 226 searches for the next title (step S7), and returns to the process of step S2.

If the determination result by the mode determination means 222 is the normal playback mode (step S2
), The title reproduction control means 225 reproduces the title. For example, as shown in FIG. 3, playback is performed in the order of title T1, title T2, title T3, and title T4. However, when the user selects a title, the title is reproduced.

As described above, according to the present embodiment, the video information of the AVTT title is played back in the video playback mode, and the audio information of the AOTT title is played back in the audio playback mode. Makes it easier to perform debugging processing and quality checks, and the time required for them is reduced, and the cost of the apparatus can be reduced accordingly. Further, in the conventional optical disc playback apparatus, the user can select a title, but it is not known if the title is AOTT or AVTT after playback, but in this embodiment, AOTT Since it is possible to select the title and the title of AVTT separately, the selection range of the title is widened, and a multipurpose function can be provided to the user.

It is a block diagram which shows the structure of the optical disk reproducing | regenerating apparatus concerning one Embodiment of this invention. It is a figure which shows the recording format of audio-video DVD. FIG. 3 is a diagram for explaining only the title portion recorded on the audio / video DVD. 4 is a flowchart for explaining processing according to a playback mode for an audio / video DVD in the embodiment.

Explanation of symbols

22 System Controller 221 Mode Setting Unit 223 Video Title Determination Unit 224 Audio Title Determination Unit 225 Title Playback Control Unit 226 Title Search Unit

Claims (3)

In an optical disc playback apparatus capable of playing back even an optical disc having a video area for mainly recording video information including video information and audio information accompanying the video information, and an audio area for recording audio information mainly including audio information A video playback mode for playing back video information of the title recorded in the video area, an audio playback mode for playing back audio information of the title recorded in the audio area, and video information of the title recorded in the video area And a normal playback mode for playing back the audio information of the title recorded in the audio area, and the mode setting means for setting any one of these playback modes and the playback mode set by the mode setting means. Mode to determine if there is any A determination means, a video title determination means for determining whether or not the title is a title of video information when the determination result by the mode determination means is a video playback mode, and the determination result by the mode determination means is an audio In the playback mode, an audio title determination unit that determines whether the title is a title of audio information, and a determination result of the video title determination unit indicates a title of video information, or the audio title determination When the determination result of the means indicates the title of the audio information, the title reproduction control means for performing control to reproduce the video information or audio information of the title, and the determination result of the video title determination means does not indicate the title of the video information Or if the audio title is determined A system controller having a title search means for searching for the next title and returning the processing to the video title determination means or the audio title determination means when the stage determination result does not indicate the title of the audio information; An optical disc reproducing apparatus characterized by the above. In an optical disc playback apparatus capable of playing back even an optical disc having a video area for mainly recording video information including video information and audio information accompanying the video information, and an audio area for recording audio information mainly including audio information A video playback mode for playing back video information of the title recorded in the video area, and an audio playback mode for playing back audio information of the title recorded in the audio area. In addition to the normal playback mode for playing back the video information and the audio information of the title recorded in the audio area, a system controller is provided for controlling playback in either the video playback mode or the audio playback mode. Optical disc playback characterized by Location. The system controller uses mode setting means for setting one of a video playback mode, an audio playback mode, and a normal playback mode, and disc management information indicating what the playback mode is set by the mode setting means. A mode determination unit for determining based on a video title determination unit for determining whether or not the title is a title of video information when the determination result by the mode determination unit is a video playback mode; and the mode determination unit When the determination result by is an audio playback mode, the audio title determination means for determining whether or not the title is a title of audio information, and when the determination result of the video title determination means indicates the title of video information, Or the determination result of the audio title determination means is audio The title reproduction control means for controlling the reproduction of the video information or the audio information of the title and the determination result of the video title determination means does not indicate the title of the video information, or the audio title And a title search means for searching for a next title and returning the processing to the video title determination means or the audio title determination means when the determination result of the determination means does not indicate the title of the audio information. Item 3. The optical disk reproducing device according to Item 2.

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