JP4445700B2 - Optical disc recording / reproducing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical disc recording / reproducing apparatus for recording and reproducing contents such as a television program using a removable optical disc as a recording medium, and in particular, without waiting for completion of initial processing of the optical disc after insertion of the optical disc. In particular, the present invention relates to an optical disc recording / reproducing apparatus capable of reproducing content recorded on an optical disc.
[0002]
[Prior art]
In recent years, an optical disk recording / reproducing apparatus using a DVD (Digital Versatile Disk) medium, particularly a rewritable medium such as DVD-RW or DVD-RAM, as a recording medium for large-capacity contents such as a television program and video / music data. Developed and commercialized.
[0003]
Here, “optical disk” refers to a recording medium on which data can be recorded and reproduced by irradiating a pit formed on the disk surface with laser light and reading the reflected light. Yes, in addition to DVD-ROM, DVD-RW, DVD-RAM, etc., CD-ROM, CD-R, CD-RW, MO, etc. are also included (the same applies hereinafter).
[0004]
2. Description of the Related Art Conventionally, in order to find a recording medium on which a content that a user wants to view is recorded from a plurality of recording media (including an optical disk), a paper on which identification information such as a title of the content recorded on each recording medium is recorded. In general, a label is attached to each recording medium main body or its cartridge in advance, and this paper label is used as a clue.
[0005]
However, in recent years, the capacity of recording media has increased, and in particular, it is possible to record a large amount of content on one optical disk such as a DVD. For this reason, in the method of pasting a paper label, identification information of many contents recorded on a large-capacity recording medium such as a DVD cannot be described on the paper label.
[0006]
Generally, a recording medium such as a DVD-ROM, DVD-RW, or DVD-RAM includes index information about the recorded content (for example, a title of the content or a thumbnail image indicating the content). When these recording media are inserted into the recording / reproducing apparatus, the list of index information is automatically displayed. The user can operate the recording / reproducing apparatus so as to select a desired content from the index information and reproduce the content.
[0007]
By the way, when the optical disc is inserted into the recording / reproducing apparatus, initial processing for reading the optical disc is performed. This initial process includes adjustment of the power of the laser beam applied to the optical disk, reading of file management information and content index information from the optical disk, etc., and usually from several seconds to several tens of seconds after the optical disk is inserted. It takes time. After the initial process is completed, the user can obtain index information from the optical disc, play back the recorded content, or record the content on the optical disc.
[0008]
Therefore, in order to search for a recording medium on which content that the user wants to view is recorded from among a large number of optical disks, the index information recorded on each optical disk is displayed on the recording / reproducing apparatus one after another. There is a problem in that it takes time to complete the initial process every time it is inserted.
[0009]
In order to solve such a problem, Patent Literature 1 proposes a media control device including a method for quickly acquiring index information of content recorded on an optical disc. This media control device uses an optical disc recording / playback device equipped with a barcode reading function to print a barcode indicating an identification code that can uniquely identify the optical disc on the optical disc itself or on the label surface of the cartridge, and record it on the optical disc. The contents information of the recorded contents is recorded on the hard disk in the optical disk recording / reproducing apparatus in association with the identification code.
[0010]
With this configuration, when an optical disc is inserted, the identification code is read from the barcode on the label surface of the optical disc, and the index information of the content associated with the identification code is read from the hard disk and recorded on the inserted optical disc. The index information of the content being displayed can be displayed. In other words, since index information can be acquired in a short time without performing initial processing of the optical disc when the optical disc is inserted, a user can search for an optical disc on which content to be viewed is recorded from a plurality of optical discs. Can be performed in a shorter time than conventional.
[Patent Document 1]
JP 2002-10183 A
[0011]
[Problems to be solved by the invention]
When a user inserts an optical disc into the conventional optical disc recording / reproducing apparatus as described above and finds content to be viewed in the displayed index information, the user can select and reproduce the content. However, as described above, in order to play back the content, the initial processing for the optical disc needs to be completed. Even if the user tries to reproduce the content selected from the index information, if the initial process is not completed, it is necessary to wait for the content to be viewed until the initial process is completed. For this reason, even if the index information is acquired in a short time as described above, a waiting time may occur until the content is reproduced.
[0012]
The conventional optical disc recording / reproducing apparatus can also be configured to perform the acquisition and display of index information and the initial processing of the optical disc in parallel when the optical disc is inserted. However, if the user selects and reproduces the content quickly, the initial processing of the optical disc may not be completed, so that a waiting time is generated until the content is reproduced as described above.
[0013]
In the invention described in Patent Document 1, the optical disk recording / playback apparatus includes a hard disk, and by storing index information of the optical disk that has been inserted once and contents associated therewith in the hard disk. The content selected by the user can be quickly reproduced without waiting for the completion of the initial processing of the optical disc. However, since the storage capacity of the hard disk of the optical disk recording / reproducing apparatus is limited, it is not possible to store all the contents of a plurality of large capacity optical disks such as DVD-ROM, DVD-RW, and DVD-RAM.
[0014]
Therefore, after inserting the optical disc into the optical disc recording / reproducing apparatus, it takes several seconds to several tens of seconds to initialize the optical disc, so that there is still a problem that the user cannot quickly reproduce the content. Yes.
[0015]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an optical disc recording / reproducing apparatus that can improve such a problem in a conventional optical disc recording / reproducing apparatus and can quickly reproduce contents after inserting the optical disc.
[0016]
[Means for Solving the Problems]
As a result of diligent research in view of the above problems, the present inventor stores a part of the head portion of the content recorded on the optical disc in a storage means such as a hard disk device provided in the optical disc recording / reproducing apparatus. Thus, after the optical disc is inserted, the initial portion of the content stored in the storage means is reproduced while the initial processing is being performed, and the continuation of the content is reproduced from the optical disc after the initial processing is completed. The optical disc recording / reproducing apparatus has been conceived.
[0017]
That is, the present invention is an apparatus for reproducing a recording medium, in which a part of the content of the recording medium is stored in advance, and the recording medium is recorded even before completion of an initial process for reading the recording medium. The apparatus which can reproduce | regenerate the content of this is provided. Thereby, even before the completion of the initial processing of the optical disc, it is possible to reproduce the content immediately after the optical disc is inserted by reproducing a part of the content stored in the apparatus.
[0018]
The present invention also provides an optical disc identification means for reading optical disc identification information contained in the optical disc, an optical disc information storage means for storing information relating to the optical disc, an optical disc information reproduction means for reproducing information read from the optical disc information storage means, The information relating to the optical disc includes a part of the content recorded on the optical disc as a partial content, and the optical disc information reproducing means can reproduce the partial content. An optical disk reproducing apparatus is provided.
[0019]
The partial content includes a head portion of each content recorded on the optical disc, and the optical disc playback apparatus reads the optical disc by the optical disc identification means during initial processing for reading the optical disc after the optical disc is inserted. The partial content corresponding to the optical disc is acquired from the optical disc information storage means based on the identification information of the optical disc, and the partial content is reproduced by the optical disc information reproduction means.
[0020]
In the present invention, when the initial processing of the optical disc is completed, the optical disc playback device switches from playback of the partial content to playback of content recorded on the optical disc corresponding to the partial content. Can do.
[0021]
Alternatively, the optical disc playback device switches from playback of the partial content to playback of content recorded on the optical disc corresponding to the partial content when a predetermined time has elapsed after the optical disc is inserted. Also good.
[0022]
Alternatively, when the playback of all of the partial content is completed, the optical disc playback apparatus switches from playback of the partial content to playback of content recorded on the optical disc corresponding to the partial content. You can also.
[0023]
Since the partial content has a reproduction time longer than the maximum time required for the initial processing of the optical disc, in any case, after the completion of the initial processing, the content recorded on the optical disc is reproduced from the reproduction of the partial content. It is possible to smoothly switch to playback.
[0024]
The partial content includes the same time code as the content recorded on the optical disc, and the time code is used when switching from the reproduction of the partial content to the reproduction of the content recorded on the optical disc. Thus, the playback timing can be synchronized.
[0025]
Furthermore, the optical disk reproducing apparatus of the present invention compares the information recorded on the inserted optical disk with the information on the optical disk stored in the optical disk information storage means. The optical disk information storage means overwrites information recorded on the optical disk.
[0026]
Further, the optical disc reproducing apparatus of the present invention compares information recorded on the inserted optical disc with information on the optical disc stored in the optical disc information storage means, and if these are different, In order to prevent playback of discontinuous content, playback is not switched to the content of the optical disc.
[0027]
The present invention is also an apparatus for reproducing an optical disc including medium identification information, the medium identification information, content information relating to content recorded on the optical disc, and content recorded on the optical disc. Optical disc information storage means for storing a partial content in association with one another, and when an optical disc is inserted into the apparatus, the medium identification information of the optical disc is obtained and stored in the optical disc information storage means An identification information discriminating means for searching for and acquiring information that matches the acquired medium identification information, and partial content playback for playing back the partial content corresponding to the inserted optical disc acquired by the identification information discriminating means And when the optical disk is inserted into the device, the optical disk can be played back. An optical disc playback preparation means for performing an initial process for performing the processing, and when the optical disc playback preparation means completes the initial processing of the optical disc during partial content playback by the partial content playback means, Thus, there is provided an optical disc playback apparatus comprising: an optical disc playback switching means for switching to playback of the corresponding content read from the optical disc.
[0028]
The present invention is also a computer-executable control program for controlling the operation of any one of the above-described optical disc playback apparatuses, and starts reading the identification information of the inserted optical disc and initial processing of the optical disc. And obtaining information relating to the optical disc from the optical disc information storage means, and when the reproduction of the optical disc is instructed before the initial processing of the optical disc is completed, the optical disc A control program for reproducing the partial data of the content of the optical disc included in the information on the recording medium is provided.
[0029]
The present invention also provides a computer-readable recording medium on which the control program is recorded.
The present invention also provides an optical disc recording / reproducing apparatus characterized in that, in any one of the above optical disc reproducing apparatuses, content can be written on the disc.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In each of the embodiments of the present invention described below, the recording medium is an optical disk such as a DVD-ROM, DVD-RW, or DVD-RAM. However, the present invention is also applicable to other recording media and recording / reproducing apparatuses thereof. Applicable.
[0031]
FIG. 1 is a functional block diagram schematically showing the configuration of the first embodiment of the optical disc recording / reproducing apparatus of the present invention. 1, the optical disk recording / reproducing apparatus of the present embodiment includes a system control unit 11, an information input unit 12, an information output unit 13, a user operation unit 14, a disk recording / reproducing unit 15, a disk ID identification unit 16, a hard disk device 18, and The work memory 19 is configured so that the optical disk 17 can be inserted for recording and reproduction.
[0032]
The system control unit 11 includes a microprocessor and the like, and each component (information input unit 12, information output unit 13, user operation unit 14, disk recording / playback unit 15, disk ID) of the optical disk recording / playback device described below Controls the operation of the identification unit 16, the hard disk device 18, and the work memory 19), and data between these components (including content data and content selection menu described below, as well as signals used for device control) , Commands, various data, etc.).
[0033]
The information input unit 12 is for inputting information or data from the outside of the optical disc recording / reproducing apparatus. The information input unit 12 typically includes, or is connected to, a television tuner or a communication modem, receives content data from a television broadcast or a communication network, and the content data is received by the system. Input to the control unit 11 is possible.
[0034]
The information output unit 13 is for reproducing the content data and the content selection menu input from the system control unit 11. The information output unit 13 typically includes or is connected to a video display device such as a CRT display and an audio output device such as a speaker, and is included in the content data and content selection menu, respectively. It is possible to play back video information and audio information.
[0035]
Here, the content selection menu is information associated with each content data, which is a list display of the title of the content or a list of thumbnail images indicating the contents of the content (index information). Say the information included.
[0036]
The user operation unit 14 includes an interface for the user to operate the optical disc recording / reproducing apparatus. This interface is typically an operation panel including operation buttons or the like (or may be a remote control panel using infrared rays), and the user can perform operations such as recording and reproduction of the optical disc 17 and the optical disc recording / reproducing apparatus itself. Alternatively, it is possible to perform operations on the video display device and the like, data communication with the outside of the device through the information input unit 12, and other operations necessary for the operation of the optical disc recording / reproducing device described below. An operation from the user operation unit 14 is input to the system control unit 11 and processed.
[0037]
The disc recording / reproducing unit 15 is for recording and reproducing the optical disc 17 inserted in the optical disc recording / reproducing apparatus, and has means (not shown) for optically reading and writing on the surface of the optical disc 17. is doing. As a result, the disc recording / reproducing unit 15 can perform a recording operation of recording the data on the optical disc 17 after converting the content data or the like input from the system control unit 11 into a format that can be recorded on the optical disc 17. . The disc recording / reproducing unit 15 reads content data recorded on the optical disc 17, and can use this data in each component of the optical disc recording / reproducing device (information output unit 13, hard disk device 18, work memory 19, etc.) After conversion to a different format, a reproduction operation to be output to the system control unit 11 can be performed.
[0038]
Further, the disc recording / reproducing unit 15 can perform initial processing of the optical disc 17 in accordance with an instruction from the system control unit 11 or automatically. Here, the initial processing includes power adjustment of the laser beam irradiated to the optical disc 17 by the disc recording / reproducing unit 15, reading of file management information and content index information from the optical disc 17, and the like.
[0039]
The disc ID identification unit 16 has means for obtaining an identification code of the optical disc from an identification element included in the optical disc 17 inserted in the optical disc recording / reproducing apparatus.
The optical disc 17 is a DVD-ROM, DVD-RW, DVD-RAM, or the like, and stores content data including video information and / or audio information. Each optical disc 17 includes an identification element including an identification code for identifying the optical disc 17.
[0040]
In the present embodiment, a paper label on which a barcode is printed as an identification element is attached to the surface of the optical disc 17 (or its cartridge). Therefore, it is assumed that the disc ID identification unit 16 has means for reading the identification code of the optical disc 17 from this bar code.
[0041]
In addition to the above examples, various embodiments are conceivable for the identification element of the optical disc 17 and the means for reading the identification element of the disc ID identification unit 16. For example, the optical disk 17 may include an IC chip, and the disk ID identification unit 16 may include a reading unit that can access the IC chip in a non-contact manner, thereby obtaining an identification code from the IC chip. Good. It is also possible to record the identification code of the optical disc 17 in a BCA (Burst Cutting Area) area of the DVD and provide a means for reading this in the disc recording / reproducing unit 15 or the disc ID identifying unit 16. .
[0042]
The hard disk device 18 includes non-volatile storage means such as a magnetic disk device, and can store content data and the like. Although a hard disk device is used here, it is of course possible to use another recording medium (such as a semiconductor storage element) capable of storing data in a nonvolatile manner.
[0043]
The work memory 19 is a volatile storage unit including a semiconductor storage element and the like, and is used as a work area for temporary data storage when the system control unit 11 operates, as well as a disk described later. It is also used to store ID management tables.
[0044]
Since components other than those described above of the optical disk recording / reproducing apparatus of the present embodiment can be configured in the same manner as those used in the conventional optical disk recording / reproducing apparatus, description and illustration thereof are omitted here.
[0045]
Next, the operation of the optical disc recording / reproducing apparatus of the present embodiment configured as described above will be described. The user causes the optical disc recording / reproducing apparatus to perform various operations by operating the user operation unit 14 after inserting the optical disc 17 into the optical disc recording / reproducing apparatus.
[0046]
When the optical disc 17 is inserted into the optical disc recording / reproducing apparatus, the disc recording / reproducing unit 15 starts an initial process for reading the optical disc 17. When the initial process is completed, the disc recording / reproducing unit 15 notifies the system control unit 11 of the completion of the initial process. At this time, the information output unit 13 may display the index information of the content data recorded on the optical disc.
[0047]
When the user operates the user operation unit 14 to select the desired content from the index information so as to reproduce the content data recorded on the optical disc 17, the system control unit 11 reads through the disc recording / reproduction unit 15. The content data or the like is output to the information output unit 13 and is played back by the information output unit 13.
[0048]
In addition, when the user operates to reproduce the content data obtained from the information input unit 12, the system control unit 11 converts the content data, etc., as necessary, after converting the data format, etc. The information is output to the output unit 13 and is reproduced by the information output unit 13.
[0049]
When the user operates to record content data or the like acquired from the information input unit 12 or the hard disk device 18 on the optical disc 17, the system control unit 11 outputs the content data or the like to the disc recording / reproducing unit 15, and the disc recording / reproducing unit 15 After the necessary data format conversion is performed, the optical disc 17 is recorded.
[0050]
In the above recording and reproduction operations, the system control unit 11 can temporarily store content data or the like to be recorded or reproduced in the hard disk device 18. This makes it possible to perform prefetching of content data, cache, buffer, and the like.
[0051]
Next, content data to be recorded and reproduced by the optical disc recording / reproducing apparatus of this embodiment will be described. FIG. 2 is a diagram schematically showing the configuration of content data.
In FIG. 2, the content data is composed of a series of continuous scenes V1, V2,..., Vn (n is an integer), and each scene includes video information and audio information. Each scene includes a series of time codes T1, T2,..., Tn (n is an integer) indicating the timing for reproducing each scene, and a recording medium (in this embodiment, the optical disc 17 or hard disk) in which each scene is stored. The device 18 is not limited to this.) A series of storage destination addresses A1, A2,..., An (n is an integer) indicating the above addresses are added.
[0052]
In the optical disk recording / reproducing apparatus of the present embodiment, each of the scenes V1 to Vn can be reproduced as continuous content data by reproducing according to the sequence of the time codes T1 to Tn. When content data is reproduced from the middle, an arbitrary time code may be designated and content data after the scene may be read and reproduced from the storage destination address of the scene corresponding to the time code.
[0053]
Next, a partial stream used in the optical disc recording / reproducing apparatus of this embodiment will be described with reference to FIGS. 3 and 4.
FIG. 3 is a diagram schematically showing the configuration of content data recorded on the optical disc. 3, the content data is composed of a series of continuous scenes V1, V2,..., V9. Each scene has a series of time codes T1, T2,..., T9 and a series of storage destination addresses DA1. , DA2, ..., DA9 are added. Others are the same as the content data shown in FIG.
[0054]
The optical disc recording / reproducing apparatus of the present embodiment has a partial stream including data having the same content as part of content data recorded on the optical disc 17 in the hard disk device 18. FIG. 4 is a schematic diagram showing the configuration of the partial stream of content data shown in FIG.
[0055]
The partial stream shown in FIG. 4 corresponds to the data from the beginning (T1) to the fixed location (T5) of the content data shown in FIG. 3, and scenes V1 to V5, time codes T1 to T5, and storage destination addresses. Consists of HA1 to HA5. Here, the storage destination addresses HA1 to HA5 indicate addresses on the hard disk device 18 where the partial streams are stored.
[0056]
In the optical disk recording / reproducing apparatus of this embodiment, the hard disk device 18 has the partial stream as described above, so that the scenes V1 to V5 in the content data shown in FIG. It can be acquired and played.
[0057]
For example, after the scenes V1 to V4 of the partial stream shown in FIG. 4 are reproduced, the scenes V5 to V9 of the content data shown in FIG. 3 can be subsequently reproduced. At this time, the system control unit 11 reads the first scene V1 of the partial stream from the address HA1 of the hard disk device 18 and reproduces it at the information output unit 13, and then sequentially reproduces the scenes V2, V3, and V4. When the playback of the scene V4 is finished, the system control unit 11 reads the content data scene V5 from the address DA5 of the optical disc 17 and plays it in the information output unit 13, and then plays the scenes V6, V7, V8, and V9 sequentially. To do.
[0058]
At this time, since the partial stream and the content data have a common time code T1 to T5, video information and audio can be recorded without disturbing the playback timing of each scene even when the playback is switched from the partial stream to the content data. Information can be reproduced continuously.
[0059]
It is assumed that the partial stream on the hard disk device 18 is recorded on the hard disk device 18 by the system control unit 11 automatically or in response to a user operation when the optical disk 17 was previously inserted. The recording of the partial stream on the hard disk device 18 may be updated each time the optical disc 17 is inserted. Further, when the storage capacity of the partial stream of the hard disk device 18 is insufficient due to the use of a large number of optical disks 17, the old partial stream may be overwritten in order.
[0060]
According to the above-described function of the optical disc recording / reproducing apparatus of the present embodiment, content data can be reproduced without waiting for completion of the initial processing after inserting the optical disc. Here, the playback time of the partial stream recorded on the hard disk device 18 is set to be equal to or longer than the maximum time required for the initial processing of the optical disc 17. As a result, when the playback of all scenes of the partial stream is completed, the initial processing of the optical disc 17 is always completed. Therefore, after the partial stream is played, the content data in the optical disc 17 can be smoothly switched to playback. The content data can be played continuously without interruption. Therefore, for the user, the content in the optical disc can be reproduced immediately after the optical disc 17 is inserted.
[0061]
In the optical disk recording / reproducing apparatus of the present embodiment, a disk ID management table in which an association between each partial stream recorded on the hard disk device 18 and an optical disk recording content data corresponding to the partial stream is stored in the work memory 19 Is going by.
[0062]
FIG. 5 is a block diagram schematically showing the configuration of the disk ID management table stored in the work memory 19. In FIG. 5, the disk ID management table is composed of a set of i disk ID information (1 to i-th) corresponding to each of i (i is an integer) optical disks. Each disc ID information includes an identification code that can uniquely identify the corresponding optical disc. Each disc ID information further includes j pieces (1 to jth) of content information (j is an integer) related to the content recorded on the corresponding optical disc.
[0063]
Each content information includes index information and partial stream information. The index information includes information related to each content recorded on the optical disc corresponding to the disc ID, for example, the title of each content, playback time, thumbnail image, time code, storage destination address on the optical disc, and the like. Each partial stream information includes a storage destination address, a time code, a reproduction time, and the like of each partial stream in the hard disk device 18 as information regarding the partial stream of each content data on the optical disk recorded on the hard disk device 18.
[0064]
Note that the index information and the partial stream information are not limited to the above contents. For example, the index information further includes information associated with the content data such as the recording date and time of each content and the channel of the recorded television program, information related to the optical disc such as the time required for the initial processing of each optical disc, and the like. Also good.
[0065]
In addition, the partial stream information may further include information necessary for switching playback, such as a time code for switching from playback of the partial stream on the hard disk device 18 to playback of content data on the optical disk.
[0066]
In the present embodiment, the disk ID management table is stored in the work memory 19, but it may be stored in the hard disk device. In this case, the work memory 19 can be omitted in the configuration of the optical disc recording / reproducing apparatus.
[0067]
The function of the disk ID management table configured as described above will be described. When the optical disc 17 is inserted into the optical disc recording / reproducing apparatus, the disc ID identification unit 16 reads the identification code of the optical disc 17. The system control unit 11 searches the disk ID management table on the work memory 19 for the disk ID information that matches the identification code of the optical disk 17, and if the corresponding disk ID information is detected, it is included in the disk ID information. Get content information.
[0068]
The system control unit 11 outputs the index information included in the acquired content information to the information output unit 13 as information related to the content of the optical disc 17. The information output unit 13 displays the index information in the form of a content selection menu or the like. The user can perform operations such as reproduction of favorite content from the content selection menu.
[0069]
When the user selects a desired content from the content selection menu and performs an operation for playback, if the initial processing of the optical disc 17 is not completed, the system control unit 11 manages the disc ID on the work memory 19. The partial stream information included in the content information corresponding to the selected content is acquired from the table, and the partial stream of the content recorded on the hard disk device 18 is obtained in the information output unit 13 based on the partial stream information. Reproduce.
[0070]
Thereafter, when the initial processing of the optical disc 17 is completed, or when a predetermined time has elapsed, the system control unit 11 switches from reproduction of the partial stream to reproduction of the content data recorded on the optical disc 17.
[0071]
Next, an operation when the optical disc 17 is inserted into the disc recording / reproducing apparatus of the present embodiment and content data recorded on the optical disc 17 is reproduced will be described. FIG. 6 is a flowchart showing operations from insertion of the optical disc 17 to content data reproduction.
[0072]
When the optical disc 17 is inserted into the optical disc recording / reproducing apparatus of the present embodiment, the disc ID identification unit 16 detects the insertion of the optical disc 17 (step S601). The disc ID identification unit 16 reads the barcode attached to the surface of the optical disc 17, acquires the identification code included in the barcode, and transmits this identification code to the system control unit 11 (step S602).
In this way, the system control unit 11 recognizes that the optical disc 17 has been inserted, and the disc recording / playback unit 15 starts the initial process of the optical disc 17 (step S603).
[0073]
After starting the initial processing of the optical disc 17, the system control unit 11 refers to the disc ID management table in the work memory 19 and searches for disc ID information that matches the identification code of the optical disc 17 currently inserted (step S604). ).
[0074]
When the system control unit 11 detects disc ID information that matches the identification code of the optical disc 17 that is currently inserted, the system control unit 11 acquires each content information included in the disc ID information, and an index included in each content information. A content selection menu based on the information is displayed on the information output unit 13 (step S605).
[0075]
If the disc ID information matching the identification code of the optical disc 17 is not detected (in the case of an optical disc inserted for the first time, the disc ID information stored previously has been deleted, etc.) After the processing is completed, each piece of content information is read from the optical disc 17 and stored in the disc ID management table in the work memory 19, and the partial stream and partial stream information corresponding to each content are stored in the hard disk device 18 and the disc ID, respectively. It is created in the management table.
[0076]
The content selection menu displayed in the information output unit 13 is to display each content recorded on the optical disc 17 currently inserted to the user, and after displaying this, the system control unit 11 Then, it waits for an operation from the user. The user can operate the user operation unit 14 to select and play a favorite content from the content selection menu (step S606).
[0077]
When the content reproduction operation is performed by the user, the system control unit 11 identifies whether the initial processing of the optical disc 17 is completed through the disc recording / reproduction unit 15 (step S607).
[0078]
If the initial processing of the optical disc 17 has been completed, the system control unit 11 acquires the content of the optical disc 17 through the disc recording / reproducing unit 15 and reproduces it in the information output unit 13 (step S611).
[0079]
If the initial processing of the optical disc 17 is not completed in step S607, the system control unit 11 selects the content selected in step S606 from the content information of the optical disc 17 acquired from the disc ID management table in step S605. With reference to the partial stream information, based on this, the partial stream of the content is read from the hard disk device 18 and reproduced in the information output unit 13 (step S608).
[0080]
Until the initial processing of the optical disc 17 is completed, the system control unit 11 continues to play back the partial stream recorded on the hard disk device 18 and waits for the completion of the initial processing of the optical disc 17 (step). S609).
[0081]
When the system control unit 11 recognizes that the initial processing of the optical disc 17 is completed through the disc recording / reproducing unit 15, the system control unit 11 switches from reproduction of the partial stream in the hard disk device 18 to reproduction of the content data recorded on the optical disc 17 ( Step S610). This playback switching is performed by acquiring the time code of the partial stream being played back when the system control unit 11 recognizes the completion of the initial process of the optical disc 17, and in the content data recorded on the optical disc 17, Content data is read from the storage destination address corresponding to the next time code, and reproduction is started in the information output unit 13.
[0082]
The disc recording / reproducing apparatus of this embodiment operates as described above until content data is reproduced after the optical disc 17 is inserted. Accordingly, when the user selects the desired content from the displayed content selection menu and plays it after inserting the optical disc 17, the selected content is played even if the initial processing of the optical disc 17 is not completed. be able to. Therefore, the user can play back and view the selected content without waiting for completion of the initial processing of the optical disc 17.
[0083]
Next, a second embodiment of the optical disc recording / reproducing apparatus of the present invention will be described. The optical disc recording / reproducing apparatus of the present embodiment is characterized in operations from inserting an optical disc to performing initial processing of the optical disc and reproducing content data recorded on the optical disc. Other configurations and operations These are the same as in the first embodiment of the present invention described above.
[0084]
FIG. 7 is a flowchart showing an operation from the insertion of the optical disc 17 to the reproduction of the content data recorded on the optical disc 17 in the optical disc recording / playback apparatus of the present embodiment.
[0085]
As shown in FIG. 7, in this embodiment, in the case where a partial stream in the hard disk device 18 is reproduced before the completion of the initial processing of the optical disc 17, in step S709, content data is reproduced from the reproduction of the partial stream after a predetermined time has elapsed. It is configured to switch to playback. Here, the fixed time is a time longer than the maximum time required for the initial processing of the optical disc 17, and is set in advance in the optical disc recording / reproducing apparatus of the present embodiment.
According to the optical disc recording / reproducing apparatus of the present embodiment having the above configuration, the same effects as those of the first embodiment can be obtained.
[0086]
Next, a third embodiment of the optical disc recording / reproducing apparatus of the present invention will be described. The optical disc recording / reproducing apparatus of this embodiment also has a feature in the operation from the insertion of the optical disc to the initial processing of the optical disc and the reproduction of the content data recorded on the optical disc. This is the same as in the first embodiment of the present invention described above.
[0087]
FIG. 8 is a flowchart showing an operation from the insertion of the optical disc 17 to the reproduction of the content data recorded on the optical disc 17 in the optical disc recording / playback apparatus of the present embodiment.
[0088]
As shown in FIG. 8, in this embodiment, when the partial stream in the hard disk device 18 is reproduced before the initial processing of the optical disc 17 is completed, all the partial streams recorded in the hard disk device 18 in step S809. When the playback of the content data is completed, the playback is switched from the playback of the partial stream to the playback of the content data. Here, since the partial stream recorded in the hard disk device 18 has a capacity for a reproduction time longer than the maximum time required for the initial processing of the optical disc 17, when the reproduction of the partial stream is completed, The process is always complete.
According to the optical disc recording / reproducing apparatus of the present embodiment having the above configuration, the same effects as those of the first embodiment can be obtained.
[0089]
Here, in the optical disc recording / reproducing apparatus of the first to third embodiments, when the content recorded on the inserted optical disc is edited, the index information of the disc ID management table corresponding to the edited content and The partial stream information is updated according to the edited content, and the partial stream recorded in the hard disk device 18 is updated so as to keep the same content as the edited content.
[0090]
Thus, even when the user edits the content in the inserted optical disc using the optical disc recording / playback apparatus of the present invention, the content on the optical disc and the corresponding index information, partial stream information, Since there is no state where the partial stream does not match, the same effect as in the first to third embodiments can be obtained.
[0091]
By the way, in the above first to third embodiments, when the content data of the optical disc 17 is rewritten by another optical disc recording / reproducing apparatus, or when the recorded content of the optical disc 17 is damaged, step S604 is performed. However, although the identification code of the optical disc 17 and the disc ID information in the disc ID management table match, the content data actually recorded on the optical disc 17 and the partial stream recorded on the hard disk device 18 are different. It may become. In such a state, when the rewritten or damaged content data is reproduced before completion of the initial processing of the optical disc 17, it is displayed when switching from the reproduction of the partial stream to the reproduction of the content data recorded on the optical disc 17. Content may be discontinuous.
[0092]
In order to avoid such a situation, in the first to third embodiments, after the initial processing of the optical disc 17 is completed in steps S609 to S809, index information (title, recording date and time) of each content is read from the optical disc 17. It can be configured to read and compare this with the index information of each content information in the disc ID management table, and to execute step S610 only when they match. If the index information read from the optical disc 17 does not match the index information in the disc ID management table, the playback operation is interrupted, and the index information and partial stream information of each content is obtained from the optical disc 17, thereby It can be configured to update the disk ID management table. Thereafter, the process proceeds to step S605, where the updated content selection menu is displayed, and the user enters a state of waiting for the user operation again (step S606).
[0093]
As a result, even if the contents of the optical disk are changed by another optical disk recording / playback apparatus or changed due to damage or the like, it is possible to prevent discontinuous video from being played back and to be included in the disk ID management table. Content information can be kept up to date.
[0094]
Although the first to third embodiments of the optical disk recording / reproducing apparatus of the present invention have been described in detail above, the optical disk recording / reproducing apparatus of the present invention is not limited to these embodiments. Various changes can be made to each component, operation, operation method, and the like of the optical disc recording / reproducing apparatus without departing from the gist of the present invention.
[0095]
For example, in the above first to third embodiments, a barcode including an optical disc identification code is attached to the optical disc surface or cartridge surface, and this is read by the disc ID identification unit 16 to obtain the optical disc identification code. However, the user may input the identification code written on the optical disk board surface or the cartridge surface on the user operation unit 14. In this case, the disc ID identifying unit 16 can be omitted in the optical disc recording / reproducing apparatus.
[0096]
The operations in the first to third embodiments of the present invention shown in the flowcharts of FIGS. 6 to 8 are described as a control program of a data processing apparatus such as a computer, and this is described as a computer included in the system control unit 11 or It can be executed in a microprocessor or the like. Furthermore, since the control program for the data processing apparatus can be stored in a computer-readable recording medium, the control program for the data processing apparatus can be executed on any computer.
[0097]
In the above first to third embodiments, the hard disk device 18 is used as the storage device of the optical disk recording / reproducing device. However, the time is shorter than the time required for the initial processing of the optical disk such as a semiconductor memory or other disk media. A storage device capable of recording or reproducing content data can be used.
[0098]
In the operations of the first to third embodiments described above, after the optical disc is inserted, the user selects a desired content from the displayed content selection menu and performs a playback operation. Immediately after that, when there is an operation for instructing content playback such as pressing the playback button, the content recorded on the inserted optical disc is randomly selected without displaying the content selection menu. May be played back.
[0099]
At this time, if the initial processing of the optical disc is not completed, the corresponding partial stream can be acquired based on the disc ID information of the inserted optical disc and can be reproduced at random. For example, when only one content is recorded on the optical disc and the user knows the content of the optical disc, the user can play the content without having to bother selecting the content from the content selection menu. Thus, user operations up to content reproduction can be simplified.
[0100]
Alternatively, after the optical disc is inserted, the corresponding partial stream may be randomly acquired based on the disc ID information of the inserted optical disc and displayed without displaying the content selection menu. As a result, the user can reproduce the content only by inserting the disc without selecting the necessary content from the content selection menu, so that the user's work associated with the content reproduction can be reduced.
[0101]
【The invention's effect】
As described above, according to the optical disc recording / reproducing apparatus of the present invention, each optical disc is given a unique identification code, and the table of contents information and content of the content recorded on the optical disc having the identification code and the identification code are provided. The identification code is acquired when the optical disk is inserted, and the identification code is acquired when the acquired identification code matches the identification code held. When the initial processing of the optical disc is started and the initial processing is completed, it is possible to switch to playback of the content data recorded on the inserted optical disc.
[0102]
As a result, when the user selects the content to be played after the content selection menu is displayed after inserting the optical disc, the user can play the selected content even if the initial processing of the optical disc is not completed. Therefore, the user can view the selected content without waiting for the time required for the initial processing of the optical disc.
[Brief description of the drawings]
FIG. 1 is a functional block diagram schematically showing the configuration of an optical disc recording / reproducing apparatus of the present invention.
FIG. 2 is a diagram schematically showing a configuration of content data to be recorded and reproduced by the optical disc recording / reproducing apparatus of the present invention.
FIG. 3 is a diagram schematically showing a configuration of content data recorded on an optical disc used in an optical disc recording / reproducing apparatus of the present invention.
4 is a schematic diagram showing a configuration of a partial stream of content data shown in FIG. 3;
FIG. 5 is a block diagram schematically showing a configuration of a disk ID management table stored in a work memory in the optical disk recording / reproducing apparatus of the present invention.
FIG. 6 is a flowchart showing an operation from insertion of an optical disk to reproduction of content data in the first embodiment of the disk recording / reproducing apparatus of the present invention.
FIG. 7 is a flowchart showing an operation from insertion of an optical disc to reproduction of content data in the second embodiment of the disc recording / reproducing apparatus of the present invention.
FIG. 8 is a flowchart showing an operation from insertion of an optical disk to reproduction of content data in the third embodiment of the disk recording / reproducing apparatus of the present invention.
[Explanation of symbols]
11 System controller
12 Information input section
13 Information output section
14 User control
15 Disc recording / playback unit
16 Disk ID identification part
17 Optical disc
18 Hard disk device
19 Work memory

Claims (7)

An optical disc reproduction apparatus comprising: an optical disc identification means for reading optical disc identification information contained in an optical disc; an optical disc information storage means for storing information relating to the optical disc; and an optical disc information reproduction means for reproducing information read from the optical disc information storage means. The information relating to the optical disc includes a part of the content recorded on the optical disc as a partial content, and the optical disc information reproducing means can reproduce the partial content in the optical disc reproducing apparatus,
The partial content includes a head portion of each content recorded on the optical disc and includes the same time code as the content recorded on the optical disc, and is recorded on the optical disc from the reproduction of the partial content. When switching to content playback, the playback timing is synchronized using the time code, and the optical disc identification information read by the optical disc identification means is performed during initial processing for reading the optical disc after insertion of the optical disc. Based on the optical disc information storage means to obtain a partial content corresponding to the optical disc, determine whether or not the initial processing of the optical disc is completed after the operation to select the content to be played back, Until the initial processing of the optical disc is completed. During, while continuing the reproduction of the partial content, and a state of waiting for the completion of the initial processing of the optical disc, when the initial processing is not completed reproducing the partial content, thereafter, the optical disc initial When it is determined that the processing is completed, the optical disc playback apparatus switches from playback of the partial content to playback of content data recorded on the optical disc.   2. The optical disc playback apparatus according to claim 1, wherein the partial content has a playback time longer than a maximum time required for initial processing of the optical disc.   The optical disc playback apparatus compares information recorded on the inserted optical disc with information on the optical disc stored in the optical disc information storage means. 2. The optical disk reproducing apparatus according to claim 1, wherein information recorded on the optical disk is overwritten in a storage means.   The optical disc playback device compares information recorded on the inserted optical disc with information on the optical disc stored in the optical disc information storage means, and if they are different, 2. The optical disk reproducing apparatus according to claim 1, wherein reproduction is not performed. An optical disc identification step of reading optical disc identification information included in the optical disc, and a step of reproducing information relating to the optical disc, wherein the information relating to the optical disc includes a part of the content recorded on the optical disc as a partial content. And an optical disc reproducing method capable of reproducing the partial content in the reproducing step,
The partial content includes a head portion of each content recorded on the optical disc and includes the same time code as the content recorded on the optical disc, and is recorded on the optical disc from the reproduction of the partial content. When switching to content playback, the playback timing is synchronized using the time code, and the optical disc identification information read by the optical disc identification step is performed during initial processing for reading the optical disc after insertion of the optical disc. The partial content corresponding to the optical disc is acquired based on the above, and it is determined whether or not the initial processing of the optical disc is completed after the operation for selecting the content to be played back is performed. until completion, the partial contents The reproduction is continued and the completion of the initial process of the optical disc is waited. If the initial process is not completed, the partial content is reproduced, and then it is determined that the initial process of the optical disc is completed. And a step of switching from reproduction of the partial content to reproduction of content data recorded on the optical disc.   A program for causing a computer to execute the steps according to claim 5.   A computer-readable recording medium for recording the program according to claim 6.

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