JP2009163789A - Optical disk player and optical disk reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk player with a changer storing a plurality of optical disks, which reproduces a desired optical disk easily and visually selected by a user. <P>SOLUTION: The optical disk player has a disk storage/selector to selectably store a plurality of optical disks, a memory to store feature images extracted from the optical disks stored in the disk storage/selector in association with identification information of the disks, a display controller to display the feature images of the optical disks in a list for the user to select one of the optical disks, and a reproducing section to reproduce the optical disk selected by the user in the disk storage/selector. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical disc reproducing apparatus and an optical disc reproducing method, and more particularly, to an optical disc reproducing apparatus and an optical disc reproducing method capable of storing a plurality of optical discs and selecting and reproducing one optical disc from the plurality of optical discs.

  2. Description of the Related Art Conventionally, some in-vehicle optical disc playback apparatuses are equipped with a device called a changer. The changer can store a plurality of optical discs such as CDs and DVDs, and even during operation, the driver continuously plays back a plurality of optical discs without changing the optical discs one by one, or any optical disc Can be selected and reproduced by a simple operation.

  Many in-vehicle optical disc playback apparatuses can reproduce not only music by CD but also video by DVD. A display device for a rear seat is also widespread, and a passenger in the rear seat can view various contents such as a movie in the vehicle even while driving.

  On the other hand, optical discs on which high-definition video (HD video: High Definition Video) is recorded, such as HD DVDs, have begun to appear on the market, and home optical disc playback apparatuses that play back HD DVDs have become widespread. There is an HD DVD video standard as an application standard relating to recording and reproduction of high-definition and high-quality video / audio content (for details of the HD DVD video standard, see, for example, Patent Document 1). The HD DVD video standard is an extension of the conventional DVD video standard, which not only improves video resolution but also diversifies the types of video and audio that can be displayed and played back. In addition, a bookmark function (see, for example, Patent Document 2) for registering a desired reproduction start position is also provided as standard, and functions related to user operations are diversified.

In the field of in-vehicle optical disc playback devices, development of devices capable of storing and playing back optical discs based on the HD DVD video standard in a changer has been promoted so that high-definition video can be viewed in the car. It is becoming.
JP 2007-172663 A JP-A-11-273319

  By the way, in the conventional optical disk reproducing apparatus with a changer, the operation for selecting a desired optical disk from a plurality of optical disks stored in the changer is somewhat inconvenient.

  When trying to select a desired optical disc from a plurality of optical discs on which video is recorded, there is a method of selecting one while playing back one by one in order and confirming the display image of the head part. This is cumbersome and cumbersome.

  There is also a method in which identification information recorded on an optical disc is associated with a disc title name arbitrarily input by a user and registered in the apparatus, and a list of disc title names is displayed on a display device immediately after power-on. . However, this method requires the user to input the title name for each disc in advance, for example, with arbitrary kana characters or alphanumeric characters, and this input operation is troublesome. In addition, if the input title name is inappropriate with low relevance to the content, it may be impossible to select a desired optical disk from a list of title names in a single operation.

  The present invention has been made in view of the above circumstances, and in an optical disk reproducing apparatus with a changer in which a plurality of optical disks are selectably stored, a desired optical disk can be selected and reproduced simply and visually. An object of the present invention is to provide an optical disc reproducing apparatus and optical disc reproducing method.

  In order to solve the above-mentioned problems, an optical disk reproducing apparatus according to the present invention is housed in a disk storage selection unit that stores a plurality of optical disks in a selectable manner and the disk storage selection unit as described in claim 1. A storage unit that stores feature images extracted from each optical disc in association with identification information of each optical disc, and the feature image corresponding to each optical disc as a list display for a user to select one of the optical discs And a playback unit for playing back the optical disc selected by the disc storage selection unit based on a user's selection operation.

  An optical disk reproduction method according to the present invention is the optical disk reproduction method of an optical disk reproduction apparatus comprising a disk storage selection unit for selectively storing a plurality of optical disks, as described in claim 5. A feature image extracted from each optical disk stored in the storage selection unit is stored in association with the identification information of each optical disk, and (b) as a list display for a user to select any of the optical disks, The feature image corresponding to each optical disk is displayed as a list, and (c) playing back the optical disk selected by the disk storage selection unit based on a user's selection operation.

  According to the optical disc reproducing apparatus and the optical disc reproducing method of the present invention, a desired optical disc can be selected and reproduced simply and visually in an optical disc reproducing device with a changer in which a plurality of optical discs are selectably stored. it can.

  An embodiment of an optical disk reproducing apparatus according to the present invention will be described with reference to the accompanying drawings.

(1) Configuration of Optical Disc Playback Device FIG. 1 is a block diagram showing a configuration example of an optical disc playback device 1 according to this embodiment. The optical disk playback device 1 has an optical disk playback device body 2 and a disk storage selection unit 3.

  The disk storage selection unit 3 is a device called a changer, and can store a plurality of optical disks, for example, six HD DVDs, in a housing. When a selection signal is output from the optical disk playback apparatus main body 2, the disk storage selection unit 3 takes out the designated optical disk and mounts it on the optical disk drive 10 (see FIG. 2) of the optical disk apparatus 1. When the optical disc playback apparatus main body 2 instructs to newly select another optical disc, the currently installed optical disc is returned to the disc storage selection unit 3 and then the newly selected optical disc is loaded.

  A video output and an audio output obtained by reproducing the optical disc are supplied from the optical disc reproducing device main body 2 to the display device 200 and the speaker 201, respectively. In FIG. 1, the display device 200 and the speaker 201 are illustrated as external components of the optical disc playback device 1, but these may be part of the configuration of the optical disc playback device 1.

  FIG. 2 is a block diagram illustrating a configuration example of the optical disc playback apparatus main body 2. The optical disc playback apparatus main body 2 includes an optical disc drive 10, a storage unit 20, a reading unit 30, a file cache unit 40, a playback control unit 50, a playback unit 60, a user interface unit 90, and the like. The playback unit 60 includes a presentation engine unit 70 and an AV renderer unit 80.

  The optical disk drive 10 reads data recorded on the optical disk according to an instruction from the reading unit 30, performs processing such as error correction, and then outputs the data to the reading unit (Data Access Manager) 30. The reading unit 30 gives instructions to the optical disc drive such as the type of data to be read and the data address.

  The storage unit (Persistent Storage) 20 is a storage device built in the optical disc playback apparatus 1, and the type and capacity of the storage device are not particularly limited. For example, it is composed of a flash memory or the like. The storage unit 20 is a device used for the purpose of recording some data by the content itself. For example, another content refers to data recorded by a certain content, or data recorded by a certain content is recorded by another. Content can be rewritten freely.

  In this embodiment, as will be described later, it is also used as a device for storing a characteristic image for specifying each optical disk stored in the disk storage selection unit 3.

  The file cache unit 40 is used as a device that temporarily stores data downloaded from an external network server.

  A playback control unit (Navigation Manager) 50 reads control data called markup or script included in Advanced Contents and controls the playback unit 60 and each part of the optical disc playback apparatus 1. Further, the user operation information input from the user interface unit 90 is read, the optical disc stored in the disc storage selection unit 3 is selected, the content to be played back recorded on the selected optical disc, and the playback start is started. Various controls such as stop, fast forward, etc. are performed.

  The reproduction control unit 50 includes a display control unit 51. The display control unit 51 performs image display control such as list display according to the present embodiment. By this display control, a list display image is generated by the reproduction unit 60 and displayed on the display device 200.

  The presentation engine unit 70 of the playback unit 60 generates a temporally continuous stream from packets such as main video, sub video, main audio, sub audio, and sub picture included in the video object (EVOB) of the advanced content. The decoding process is performed for each stream.

  The AV renderer unit 80 of the playback unit 60 generates a single composite image plane by superimposing the image planes of the main video, sub video, and sub picture generated by the decoding process, the cursor image plane, and the graphics image plane. The composite image plane is output to the display device 200 or the like as a video signal.

  The AV renderer unit 80 also synthesizes (mixes) audio signals such as main audio and sub audio, and outputs the synthesized audio signal to the speaker 201 and the like.

  In the optical disk reproducing apparatus 1 according to the present embodiment, a CD and a conventional DVD can be reproduced in addition to an optical disk based on the HD DVD video standard. Optical discs based on the HD DVD standard are classified into category 1 in which only standard content is recorded, category 2 in which only advanced content is recorded, and category 3 in which both standard content and advanced content are recorded. Can do.

  The configuration example shown in FIG. 2 is a configuration example necessary for reproducing advanced content out of the configuration of the optical disc playback apparatus main body 2 and is illustrated. The optical disc 100 to be played back mainly includes The optical discs are category 2 and category 3.

  FIG. 3 is a diagram illustrating a configuration example of the advanced content. The advanced content is composed of basic control data called a playlist (order definition data) and objects called four types of presentation objects. The four types of presentation objects are called a primary video set, a secondary video set, an application (Advanced Application), and an advanced subtitle (Advanced Subtitle), respectively. These four types of presentation objects are all referenced from the playlist.

  The primary video set is composed of one management data (VTSI), a plurality of pairs of primary video objects (P-EVOB), and a time map (TMAP).

  Management data (VTSI) records the attribute information of all primary video objects (P-EVOB) on the disc, and reads the management data (VTSI) before playing the primary video object (P-EVOB). The settings for the playback unit 60 can be made.

  The time map (TMAP) is information necessary for performing random access of the primary video object (P-EVOB), and the playback time from the beginning of the primary video object (P-EVOB) is represented by the primary video object (P-EVOB). EVOB) is a table for converting addresses into files.

  The primary video object (P-EVOB) is data in which the contents are recorded.

  The secondary video set includes a plurality of pairs of secondary video objects (S-EVOB) and time maps (TMAP). Similar to the primary video object (P-EVOB), the secondary video object (S-EVOB) is data in which the content is recorded. In addition, the time map (TMAP) of the secondary video set is information necessary for performing random access to the secondary video object (S-EVOB) in the same manner as the time map of the primary video set. Although there is no independent management data (VTSI) file in the secondary video set, the management information is included in a part of the time map.

  The primary video set is a video object that is recorded on an optical disc and is assumed to be reproduced directly from the disc. On the other hand, the secondary video set is more versatile and can be recorded in an external network server or the storage unit 20. Then, it can be reproduced directly from the network server or the storage unit 20, or can be reproduced after being downloaded to the file cache unit 40 once.

  The application has control data called a manifest, markup, and script, and performs playback control of the primary video set and the secondary video set described above using these control data.

  The application also has image data, sound effects, and fonts in JPEG and PNG formats as its components, and these image data, sound effects, and fonts can be combined with video output and audio output. it can.

  The advanced subtitle is an application specialized for displaying subtitles, and includes an image and font for displaying subtitles as constituent elements, and includes control data for manifests, markups, and scripts for controlling these displays.

(2) List display of a plurality of discs As described above, in the conventional optical disc player with changer, the function for displaying a list of a plurality of discs stored in the changer is somewhat poor. The conventional list display is mainly performed by a method in which a user inputs a kana character or alphanumeric text in advance to register a disc name and displays the input text in a list. The input of text data is complicated, and the displayed content is also a text list display, so it is difficult for the user to visually recognize the content of the optical disc immediately.

  On the other hand, in the optical disc playback apparatus 1 according to the present embodiment, the optical discs stored in the changer (disc storage selection unit 3) are automatically displayed as a list of images (still images). For this reason, an operation related to the list display is not necessary, and a desired optical disk can be immediately selected by the list display that is visually recognizable. Hereinafter, a list display method according to the present embodiment will be described.

(3) First List Display Method The first list display method is a method of reading and displaying an image file recorded in advance on the optical disc as one of the management information files of the optical disc.

  FIG. 4 is a diagram showing an example of directories and files of an HD DVD video standard optical disc in which advanced content and standard content are recorded. In an optical disc on which advanced content is recorded, a directory named “ADV_OBJ” is provided immediately below the Root directory. In the “ADV_OBJ” directory, the above-described playlist file and various files used for advanced content playback are provided.

  Among these files, there is an image file called “Persistent Storage Management Menu”. This image file is often a logo mark image of a content production company or a logo image file that briefly represents the content and name of the content. The image size is also a horizontally long image such as 1024 × 96 dots (hereinafter, the “Persistent Storage Management Menu” image is simply referred to as a logo image). The usage form of these logo images is not particularly specified, but is used for the purpose of automatically displaying, for example, the first certain period of disc playback, and accurately grasps the characteristics of the optical disc. There are many images.

  In the first list display method, the logo image file is extracted as a characteristic image of the optical disk and used for list display.

  FIG. 5 shows an example of the display screen W1 according to the first list display method. On the list display screen W1, logo images of six optical disks stored in the disk storage selection unit 3 are displayed in a list. The display screen W1 is displayed on the display device 200, for example. The user can visually recognize all the optical disks stored in the disk storage selection unit 3 immediately and visually. Then, the user interface unit 90 selects a desired disk from the list display. The user interface unit 90 is, for example, a touch panel provided on the display screen of the display device 200 or a remote controller.

  The logo image recorded on the optical disc is temporarily stored in the storage unit 20 of the optical disc playback apparatus main body 2. At this time, each logo image is stored in association with the identification information of the optical disc. Each time a new optical disc is loaded into the disc storage selection unit 3, the disc identification information and the logo image are stored in the storage unit 20. When the optical disk is taken out from the disk storage selection unit 3 and mounted again, it is found from the disk identification information that the logo image of the disk has been saved in the past, so that it is unnecessary to save the logo image again. Become. As described above, the storage unit 20 stores not only the logo image of the optical disc currently stored in the disc storage selection unit 3 but also the logo image of the optical disc mounted in the disc storage selection unit 3 in the past.

  When the optical disk playback device 1 is turned on, the logo images of all optical disks stored in the disk storage selection unit 3 are read from the storage unit 20 and listed on the display device 200 as illustrated in FIG. Displayed as a display.

  Note that some optical discs do not have an image file of “Persistent Storage Management Menu” recorded therein. In this case, the list display column of the optical disk is displayed as blank as “Disk 4” in FIG.

(4) Second List Display Method The second list display method uses a bookmark image generated by a so-called bookmark function for list display.

  FIG. 6 is a diagram illustrating a concept of bookmark image generation processing. The bookmark is a “bookmark” set at an arbitrary timing by the user's operation during playback of the optical disc, and can be played back from the position of the “bookmark (bookmark)” set at the next playback. The user uses the user interface unit 90 (for example, a remote controller or a touch panel) to give a bookmark setting instruction during playback of the optical disc. At this time, the reproduction time information of the optical disk at the timing when the bookmark setting instruction is issued is stored in the storage unit 20 as the bookmark information together with the identification information of the disk.

  In addition, the playback video when the bookmark setting instruction is issued can be stored in the storage unit 20 as a still image. This still image is a bookmark image. When the user intends to start playback from a bookmark, displaying the bookmark image facilitates confirmation of the playback position by the user.

  If bookmarks are set for all of the plurality of optical disks in the disk storage selection unit 3, bookmark images for the respective optical disks are stored in the storage unit 20. In the second list display method, this bookmark image is displayed as a list of characteristic images of the optical disc.

  FIG. 7 shows an example of the display screen W2 by the second list display method. On the list display screen W2, reduced bookmark images obtained by reducing the bookmark images of the six optical disks stored in the disk storage selection unit 3 are displayed in a list. The display screen W2 is displayed on the display device 200, for example, similarly to the screen W1 by the first list display method. The user can visually recognize all the optical disks stored in the disk storage selection unit 3 immediately and visually. The user interface unit 90 can easily select a desired disk from the list display.

  A bookmark image is stored in the storage unit 20 together with the identification information of the optical disc. Further, not only the bookmark image of the optical disk currently stored in the disk storage selection unit 3 but also the bookmark image of the optical disk previously mounted on the disk storage selection unit 3 is stored together with the identification information. Therefore, in the case of an optical disc for which bookmark setting has been performed in the past, it is possible to display a list without taking in a bookmark image every time the optical disc is set in the disc storage selection unit 3.

  However, in the case of the first optical disc for which no bookmark setting has been performed, since the bookmark image of the optical disc is not stored in the storage unit 20, it is displayed as a blank as “disc 6” in FIG.

  A plurality of bookmarks can be set for one optical disc. In this case, for example, the top bookmark image may be used as a feature image representing the optical disc for list display. Further, a menu screen for selecting a list display image from a plurality of bookmark images may be separately provided so that the user can select and set a list display bookmark image.

  As described above, according to the optical disc playback apparatus 1 and the optical disc playback method according to the present embodiment, a list display of a plurality of optical discs stored in the disc storage selection unit 3 (changer) is automatically and characteristically performed. Since the image is visually displayed, the user can select and reproduce the desired optical disk reliably and quickly.

  In the first list display method, an image file (an image file of “Persistent Storage Management Menu”) defined as the HD DVD standard is used for list display. Therefore, in the playback device of the HD DVD video standard, each feature image can be displayed as a list without newly providing a special device such as an image capture device.

  Similarly, the HD DVD standard normally includes a function to save bookmark images as bookmarks, and a list of bookmark images on each optical disc is displayed as a feature image without providing a special device such as an image capture device. Can be made.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined.

1 is a block diagram showing a configuration example of an optical disc playback apparatus according to an embodiment of the present invention. The block diagram which shows the detailed structural example of an optical disk reproducing | regenerating apparatus main body. The figure which shows the structural example of the advanced content reproduced | regenerated with an optical disk reproducing | regenerating apparatus. It is a figure which shows an example of the directory and file of HD DVD, and is a figure which especially shows the example of the arrangement position of a logo image file. The figure which shows an example of the display image by the 1st list display method (display of a logo image). The figure which illustrates typically the bookmark image generation method. The figure which shows an example of the display image by the 2nd list display method (display of a bookmark image).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk reproducing apparatus 2 Optical disk reproducing apparatus main body 3 Disk storage selection part (changer)
DESCRIPTION OF SYMBOLS 10 Optical disk drive 20 Memory | storage part 30 Reading part 40 File cache part 50 Playback control part 60 Playback part 70 Presentation engine part 80 AV renderer part 90 User interface part 200 Display apparatus 201 Speaker

Claims (10)

A disk storage selection unit for storing a plurality of optical disks in a selectable manner;
A storage unit for storing a feature image extracted from each optical disc stored in the disc storage selection unit in association with identification information of each optical disc;
A display control unit for displaying a list of the characteristic images corresponding to each optical disc as a list display for the user to select one of the optical discs;
A playback unit for playing back the optical disc selected by the disc storage selection unit based on a user's selection operation;
An optical disc reproducing apparatus comprising: The characteristic image is an image read from an image file recorded as one of management information of the optical disc.
The optical disk reproducing apparatus according to claim 1, wherein: The optical disc is an optical disc based on the HD-DVD video standard,
The image file is an image file in the persistent storage management menu.
The optical disk reproducing apparatus according to claim 2, wherein The storage unit stores bookmark information necessary for resuming reproduction and a bookmark image extracted from video immediately after resuming reproduction in association with each optical disc,
The feature image is the bookmark image;
The optical disk reproducing apparatus according to claim 1, wherein: In an optical disc playback method of an optical disc playback apparatus including a disc storage selection unit that stores a plurality of optical discs in a selectable manner,
(A) storing a characteristic image extracted from each optical disk stored in the disk storage selection unit in association with identification information of each optical disk;
(B) As a list display for the user to select one of the optical disks, the feature images corresponding to the optical disks are displayed as a list.
(C) Playing back the optical disc selected by the disc storage selection unit based on the user's selection operation;
An optical disc reproducing method comprising steps. The characteristic image is an image read from an image file recorded as one of management information of the optical disc.
The optical disk reproducing method according to claim 5, wherein: The optical disc is an optical disc based on the HD-DVD video standard,
The image file is an image file in the persistent storage management menu.
The optical disc reproducing method according to claim 6. (D) storing bookmark information necessary for resuming reproduction and a bookmark image extracted from video immediately after resuming reproduction in association with each optical disc;
Further comprising steps,
The feature image is the bookmark image;
The optical disk reproducing method according to claim 5, wherein: A disk storage selection unit for storing a plurality of optical disks in a selectable manner;
When the optical disk stored in the disk storage selection unit is an optical disk based on the HD-DVD video standard, the image file in the persistent storage management menu is stored in association with the identification information of each optical disk. Persistent storage,
When the persistent storage stores the image file, display control for generating and displaying a list of disk selection screens for the user to selectively play back one of the optical disks using the image file And
Based on the image file selected by the user from the disc selection screen, a playback unit for playing back the optical disc selected by the disc storage selection unit;
An optical disc reproducing apparatus comprising: A disk storage selection unit for storing a plurality of optical disks in a selectable manner;
When the optical disk stored in the disk storage selection unit is an optical disk based on the HD-DVD video standard, when a bookmark is specified by the user, a bookmark image is stored in association with the identification information of each optical disk. Persistent storage,
When the persistent storage stores the bookmark image, display control for generating and displaying a list of disk selection screens for the user to selectively play back one of the optical disks using the bookmark image And
Based on the bookmark image selected by the user from the disc selection screen, a playback unit for playing back the optical disc selected by the disc storage selection unit;
An optical disc reproducing apparatus comprising:

Images