WO2008072314A1

WO2008072314A1 - Optical disc reproduction device, optical disc reproduction method, optical disc reproduction program, and recording medium containing optical disc reproduction program

Info

Publication number: WO2008072314A1
Application number: PCT/JP2006/324799
Authority: WO
Inventors: Yoshihiro Hashizuka; Hiroyuki Enomoto; Hideaki Tsurumi; Shigetoshi Yogo; Keisuke Tochihara
Original assignee: Pioneer Corporation
Priority date: 2006-12-13
Filing date: 2006-12-13
Publication date: 2008-06-19

Abstract

[PROBLEMS] In an optical disc having a plurality of recording layers such as an HD-DVD layer and a DVD layer, for example, if the same content is redundantly recorded, both of them are reproduced. Moreover, it takes a significant trouble to search a content recorded only on one of the recording layers. [MEANS FOR SOLVING PROBLEMS] A title name, a chapter name, a reproduction time recorded in control data in the recording layer are stored in a memory (8) in advance in such a manner that during a reproduction, 'already reproduced' is indicated in the reproduced chapter. When the recording layer is switched, the title name, the chapter name, and the reproduction time recorded in the memory (8) are compared to the title name, the chapter name, and the reproduction time of the switched recording layer, so that among the matched chapters, the chapter already reproduced before the switching is kept to the state 'already reproduced' even in the switched recording layer. Thus, only the chapters excluding the reproduced chapters are reproduced.

Description

Specification

Optical disc playback apparatus, optical disc playback method, optical disc playback program, and recording medium storing optical disc playback program

Technical field

The present invention relates to an optical disc playback apparatus for playing back an optical disc on which video, audio, and the like are recorded.

The present invention relates to an optical disc reproducing method, an optical disc reproducing program, and a recording medium storing an optical disc reproducing program.

Background art

Conventionally, a DVD (Digital Versatile Disc) is used as an optical disc on which content information such as video is recorded. In recent years, HD-DVD (High-Definition Digital Versatile Disc) has been used as a high-capacity optical disc that can record content information with higher image quality than images recorded on conventional SD (Standard Definition) image quality TVs and DVDs. Luray discs, etc. have appeared, and you can view content information with higher image quality than before.

[0003] Further, as described in Patent Document 1, a disc called a hybrid disc having a plurality of recording layers of different types on one optical disc, such as HD-DVD and DVD, has been proposed. Yes. For such an optical disc, as described in Patent Document 2, for example, the same content information is recorded on the HD-DVD layer capable of recording a large amount of information with the same content information, and the lower image quality is recorded. If the device is capable of high-quality playback by recording on the DVD layer, the content information recorded on the HD—DVDfi can be played back, and if it cannot be played back at high image quality, the content information recorded on the DVD layer can be used. When you play it, you can!

Patent Document 1: Japanese Unexamined Patent Publication No. 2006-268958

Patent Document 2: Japanese Patent Laid-Open No. 2006-73038

Disclosure of the invention

Problems to be solved by the invention

[0004] However, in the case of a playback device that supports both HD and DVD, In some cases, the reproduction of the other recording layer is started after the reproduction of the recording layer is completed. In that case, the user will view the content information once viewed again.

[0005] In addition, when there is content information recorded only on one recording layer, in order to view the content information, the user has searched while checking the content of each content information. In some cases, it takes time and the operation becomes complicated.

[0006] Therefore, in the present invention, for example, when an optical disc having a plurality of recording layers is played back, the same content information is recorded in both recording layers, so that they are not played back repeatedly.

The present invention provides an optical disc playback apparatus, an optical disc playback method, an optical disc playback program, and a recording medium storing an optical disc playback program that can easily search for content information recorded only on one recording layer or play back only the content information. This is an issue.

Means for solving the problem

[0007] In order to solve the above-mentioned problem, the invention according to claim 1 is a reading means for reading the content information from an optical disc provided with a plurality of recording layers on which a plurality of content information is recorded, and the reading Content name storage means for storing a content name corresponding to the content information recorded in the reproduced recording layer, in an optical disc playback apparatus comprising: a playback means for playing back the content information read by the means; When the recording layer to be reproduced is switched, the content name of the recording layer to be reproduced is compared with the content name of the reproduced recording layer stored in the content name storage means. And a control means for extracting the content information redundantly, and comprising: / Speak.

[0008] The invention according to claim 9 relates to an optical disc reproducing method of reading the content information from an optical disc provided with a plurality of recording layers on which a plurality of content information is recorded, and reproducing the read content information. The content name corresponding to the content information recorded in the plurality of recording layers is stored, and when the recording layer to be played back is switched, the content name of the recording layer to be played back and the recorded recording layer The content information is extracted by comparing the stored content name and the content name is duplicated! / [0009] The invention according to claim 10 is the optical disc power provided with a plurality of recording layers in which a plurality of content information is recorded. The reading means includes a computer of an optical disc reproducing device provided with a reading means for reading the content information. In an optical disc reproduction program that functions as a reproduction unit that reproduces the read content information, a content name storage unit that stores a content name corresponding to the content information recorded in the plurality of recording layers, and a reproduction When the recording layer to be switched is switched, the content name of the recording layer to be played back is compared with the content name of the recorded recording layer stored in the content name storage means, and the content name is The computer is caused to function as a control means for extracting the content information redundantly. It is a sign.

Brief Description of Drawings

[0010] FIG. 1 is a block diagram of an optical disk reproducing apparatus that is effective in the first to third embodiments of the present invention.

[FIG. 2] An explanatory diagram of an irregular disk.

FIG. 3 is an explanatory diagram of the menu structure of HD-DVD.

FIG. 4 is an explanatory diagram of the menu structure of a DVD.

FIG. 5 is a flowchart showing the playback operation of the optical disc playback apparatus shown in FIG. 1.

FIG. 6 is a flowchart in the first embodiment showing the operation of step S106 in the flowchart shown in FIG.

FIG. 7 is an explanatory diagram of a storage state of content names and reproduced information in one recording layer stored in the memory in the first embodiment.

FIG. 8 is an explanatory diagram of a storage state of content names and reproduced information in one recording layer stored in the memory in the first embodiment.

FIG. 9 is an explanatory diagram in which only reproduced chapters are extracted from the explanatory diagram shown in FIG. 7.

FIG. 10 is an explanatory diagram when matching the explanatory diagram shown in FIG. 7 and the explanatory diagram shown in FIG. 8 in the first embodiment.

FIG. 11 is an explanatory diagram in which the chapter selected in the explanatory diagram shown in FIG. 10 in the first embodiment has been reproduced.

[FIG. 12] In the second embodiment showing the operation of step S106 in the flowchart shown in FIG. It is a flowchart in it.

FIG. 13 is an explanatory diagram of a storage state of a title and reproduced information in one recording layer stored in the memory in the second embodiment.

FIG. 14 is an explanatory diagram of a storage state of a title and reproduced information in one recording layer stored in the memory in the second embodiment.

FIG. 15 is an explanatory diagram when matching the explanatory diagram shown in FIG. 13 with the explanatory diagram shown in FIG. 14 in the second embodiment.

16] FIG. 16 is an explanatory diagram in which a read chapter has been reproduced among the chapters selected in the explanatory diagram shown in FIG. 15 in the first embodiment.

FIG. 17 is a flowchart in the third embodiment showing the operation of step S106 in the flowchart shown in FIG.

FIG. 18 is an explanatory diagram when matching the explanatory diagram shown in FIG. 13 and the explanatory diagram shown in FIG. 14 in the third embodiment.

[19] FIG. 19 is an explanatory diagram in which a read chapter has been reproduced among the chapters selected in the explanatory diagram shown in FIG. 18 in the third embodiment.

Explanation of symbols

1 Optical disk playback device

3 Optical pickup (reading means)

7 Audio Z video signal processing section (reproduction means)

8 Memory (content name storage means)

11 Microcomputer (reproduced information addition means, control means)

12 Optical disc

13 Operation part (display means)

S104 Control data read (content name storage means)

S 106 Comparison of the recorded recording layer and the current recording layer (control means)

S107 Replayed and replayed chapters are marked as read (reproduction means, regenerated information addition means)

BEST MODE FOR CARRYING OUT THE INVENTION [0012] Hereinafter, an optical disk reproducing apparatus according to an embodiment of the present invention will be described. An optical disc reproducing apparatus according to an embodiment of the present invention stores content names recorded in a plurality of recording layers in a content name storage unit. When the recording layer to be played back is switched, the control means compares the content name of the recording layer to be played back with the content name storage means! Content information corresponding to the content name is extracted. In this way, when the same content information is recorded in multiple recording layers, the overlapping part is extracted, so that if the other part is played back, the same content information is not played back. The content information recorded only in the recording layer of the above can also be easily searched because it is sufficient to exclude the content information.

[0013] Furthermore, provided is a reproduced information adding means for adding the reproduced information to the content name corresponding to the reproduced content information among the content names stored in the content name storage means, and the control means records the reproduced information. When the layer is switched, the content name of the recording layer to be reproduced is compared with the content name stored in the content name storage means, and the content name is duplicated and the reproduced information is added Information may be extracted. In this way, when the same content information is recorded in a plurality of recording layers, it is possible to extract content information that has been duplicated and has already been reproduced. Content information that has not been played even if it is duplicated can be easily searched or played back.

[0014] Further, the control unit may read out the content information corresponding to the extracted content name by the reading unit and cause the reproducing unit to reproduce the content information. By doing so, the same content information is recorded on a plurality of recording layers, and the content information is duplicated in the case where the content information is duplicated or reproduced even if it is duplicated. Only information can be replayed.

[0015] In addition, a display unit is provided that can display a list of content information recorded on the recording layer, and the control unit can display the extracted content information and other content information. May be displayed. By doing this, the same content information is recorded in multiple recording layers, and in the case of duplication, content information and duplication! / ヽ Even if it is played back, the content information can be easily searched.

[0016] Further, at least one of the identification name, the reproduction time, and the reproduction order recorded in the management area of the content name recording layer stored in the content name storage unit may be used. By doing so, it is possible to extract content information that is duplicated in a plurality of information layers recorded in the management area of the optical disc.

[0017] Further, the control means may compare the reproduction time of the content information stored in the content name storage means with the reproduction time of the recording layer to be reproduced from now on for each reproduction order of the content information. By doing so, it is possible to extract content information that is duplicated in a plurality of recording layers only by the reproduction order and reproduction time.

[0018] In addition, the control unit compares the reproduction time of the content information stored in the content name storage unit for each reproduction order of the content information with the reproduction time of the recording layer to be reproduced in the future, and does not match. In this case, the playback time stored in the content name storage means with the same strength is compared with the playback time of the content information of the recording layer to be played back after the playback order without the same strength. May be. By doing so, even if content information is recorded in the middle of a plurality of content information, the duplicate content information can be extracted.

In addition, the plurality of recording layers of the optical disc may be read by laser beams having different wavelengths. In this way, when the same content information is recorded on multiple recording layers on an optical disc in which recording layers are read by laser beams of different wavelengths, such as HD-DVD and DVD, duplicate portions are extracted. Therefore, the content information recorded only on one recording layer where the overlapped portion is not reproduced can be easily searched or reproduced because it is sufficient to exclude the content information that is duplicated. it can.

[0020] In addition, an optical disc reproducing method according to an embodiment of the present invention stores content names recorded in a plurality of recording layers. Then, when the recording layer to be reproduced is switched, the content name of the recording layer to be reproduced is compared with the stored content name to extract content information corresponding to the overlapping content name. ing. By rubbing in this way, if the same content information is recorded in multiple recording layers, the overlapping part is extracted. Since the same content information is not reproduced if the part other than the overlapping part is reproduced, the content information recorded only on one of the recording layers is also good except for the overlapping content information. You can search.

[0021] In addition, an optical disc reproduction program according to an embodiment of the present invention stores content names recorded in a plurality of recording layers in a content name storage unit. When the recording layer to be played back is switched, the control means compares the content name of the recording layer to be played back with the content name stored in the content name storage means, and duplicate content is recorded. Ask the computer to extract the name. In this way, when the same content information is recorded on a plurality of recording layers, the overlapping portion is extracted, so that if the other portion is reproduced, the same content information is not reproduced. Content information recorded only on one recording layer can be easily searched because it is sufficient to exclude content information that overlaps.

[0022] Further, the recording medium reproduction program according to claim 10 may be stored in a recording medium. In this way, the recording medium playback program can be distributed as a single unit in addition to being incorporated into the device.

Example 1

[0023] An optical disk reproducing apparatus 1 useful for the first embodiment of the present invention will be described with reference to Figs. In addition to CD, DVD, and HD—DVD alone, the optical disc playback apparatus 1 can play back a hybrid disc having two recording layers of DVD and HD—DVD on a single optical disc. As shown in Fig. 2, the hybrid disc has two layers, a DVD layer and an HD—DVD layer. The HD—DVD layer is formed at a position away from the surface where the information is read. Further, chapters as content information are recorded in each recording layer, and the chapters are recorded in a title composed of one or more chapter cameras as shown in FIGS. 3 and 4, for example. For example, playback is performed in the order of title number and chapter number, such as title 1 chapter 1, title 1 chapter 2, and so on. Each title and chapter can be given a name. The structure shown in FIGS. 3 and 4 is recorded in the control data as the management area of each recording layer. As shown in FIG. 1, the optical disk playback apparatus 1 includes a disk motor 2, an optical pickup 3, an RF amplifier 4, a servo signal processing unit 5, a driver 6, an audio Z video signal processing unit 7, and a memory. 8, a DA converter 9, an audio signal Z video signal output terminal 10, a microcomputer 11, and an operation unit 13.

[0025] The disc motor 2 is a motor for rotating the optical disc 12 set in the optical disc reproducing apparatus 1, and is composed of a spindle motor or the like.

[0026] The optical pickup 3 as a reading means generates a light to be irradiated on the optical disc 12, a laser diode (not shown), an objective lens for irradiating the optical disc 12 with a laser beam from the laser diode, and a servo signal processing unit 5 It includes an actuator that drives the objective lens in order to adjust the focus and tracking according to instructions from the optical disc, and a photoreceiver that receives the reflected light that is also reflected from the optical disc. Various control signals generated from the intensity of reflected light such as RF signals and focus error signals including chapter tracks such as video and music are generated and output. In addition, HD-DVDs and DVDs are read by laser beams of different wavelengths, so they have an optical system such as a laser diode corresponding to each. Content information refers to data divided in predetermined units such as chapters, tracks, files, songs, and programs in video and audio.

The RF amplifier 4 amplifies the signal input from the optical pickup 3 to a predetermined value and outputs it to the servo signal processing unit 5.

The servo signal processing unit 5 controls the focus and tracking by driving the objective lens of the optical pickup 3 based on a control signal such as a focus error signal input from the RF amplifier 4 to control the optical disc 12 To make it possible to read the information recorded in Further, a signal including video and music recorded on the optical disk 12 is analog-to-digital converted and output to the audio Z video signal processing unit 7.

The driver 6 amplifies the signal input from the servo signal processing unit 5 and outputs the amplified signal to the disk motor 2 and the optical pickup 3.

[0030] The audio Z video signal processing unit 7 serving as a reproducing unit performs error correction and demodulation on the signal input from the servo signal processing unit 5, and then performs management information on the demodulated optical disc 12. Is output to the memory 8 and the audio or video signal is output to the DA converter 9 after decoding.

[0031] The memory 8 serving as the content name storage means associates the management information of the optical disc 12 input from the audio Z video signal processing unit 7 and the reproduced information of the reproduced chapter track with the management information. Record.

The DA converter 9 converts the digital signal input from the audio Z video signal processing unit 7 into an analog signal and outputs the analog signal from the audio output terminal 10a and the video output terminal 10b.

[0033] The microcomputer 11 as a reproduced information adding means and a control means includes a CPU (Central Processing Unit), a RAM (Random Access Memory;), and a ROM (Read Only Memory), and can be used for reproduction, stop, etc. Control of the entire optical disc playback apparatus 1 in each operation, playback control on a hybrid disc, and the like are performed.

[0034] The operation unit 13 as a display means is a button for the user to give instructions such as playback of the optical disc playback device 1, random playback, stop, playback layer selection of the hybrid disc, and operation of the optical disc playback device 1. It includes a display that displays the status and the contents of the chapter recorded on the set optical disc.

Next, with reference to the flowchart shown in FIG. 5, the operation when playing back an HD-DVD and a DVD / DVD disc in the optical disc playback apparatus 1 having the configuration shown in FIG. 1 will be described. . The flowchart shown in FIG. 5 is realized by the CPU of the microcomputer 11 executing the control program stored in the ROM of the microcomputer 11.

First, in step S 101, a default recording layer to be reproduced is set, and the process proceeds to step S 102. For example, if HD-DVD playback is the default, set parameters such as the optical pickup 3 and servo for HD-DVD.

[0037] Next, in step S102, the recording layer switching FLG is set to OFF, and the flow proceeds to step S103. This flag indicates whether or not the recording layer to be reproduced on the hybrid disc has been switched.

[0038] Next, in step S103, setup such as adjustment of focus and tracking gain and balance in the optical pickup 3 is performed, and the flow proceeds to step S104. In this step, it is determined whether or not the optical disk 12 is a hybrid disk. Store it inside or in RAM. A method for determining whether or not the disc is a hybrid disc is performed, for example, by determining whether a signal having a predetermined amplitude can be obtained by switching the laser beam and moving the objective lens in the focus direction.

[0039] Next, in step S104, the control data as the management area of the default recording surface (HD-DVD in this embodiment) is read and stored in the memory 8 so as to be stored in the memory 8. And go to step S105.

[0040] Next, in step S105, it is determined whether or not the recording layer switching FLG is ON.

If it is in the N state (in the case of YES), the process proceeds to step S106, and if not (in the case of NO), the process proceeds to step S107.

[0041] Next, in step S106, the content names and playback states of the reproduced recording layer and the currently selected recording layer are compared, and the process proceeds to step S107.

Here, the detailed operation of step S 106 will be described with reference to the flowchart of FIG. 6 and FIGS. 7 to 11.

[0043] The control data as the management area of the HD—DVD layer read out in step S104 is also stored in the table as shown in FIG. 7, for example, as the title name, chapter name, and playback time as the content name. In the same way, the DVD layer stores the control data power as the management area. The read title name, chapter name and playback time are stored in the memory 8 as a table as shown in FIG. In FIGS. 7 and 8, “O” in the read column indicates that the corresponding chapter has been reproduced, and “X” indicates that the corresponding chapter has not been reproduced. Note that 〇 and X are notations for ease of distribution, and when actually stored in the memory 8, 〇 may be 1 and X may be 0, or only the read code should be determined. If a code other than the read code is stored, it may be regarded as not read. In other words, the “read” column in FIGS. 7 and 8 is the reproduced information. The following describes the case where the HD-DVD layer is first played and then switched to the DVD layer.

[0044] First, in step S201, the memory 8 force is also extracted from the read chapter information of the recording layer before switching, and the process proceeds to step S202. In the case of Fig. 7, only the chapters with ○ in the read column are extracted as shown in Fig. 9.

Next, in step S 202, the read chapter of the recording layer before switching, the title name, Select the recording layer force after switching the one whose chapter name and playback time match, and proceed to step S203. In the case of FIG. 8, the title name, chapter name, and playback time that match all the chapters extracted in FIG. 9 are selected as shown in FIG. For example, the title name “A” in FIG. 9 and the title name “A” playback time 10 are also selected in the first row in FIG.

[0046] Next, in step S203, the matching chapter in the recording layer after switching is set as read. The chapter selected in Fig. 8 is set to the read state as shown in Fig. 11. That is, by comparing the content name of the recording layer to be reproduced from now and the content name stored in the content name storage means, the content information is duplicated and the reproduced information is added. Is extracted.

[0047] Next, in step S107, the currently selected recording layer is played back, and the chapter that has been played back writes data indicating read in the area corresponding to the chapter in memory 8 step S108. Proceed to At this time, the already read chapter is not reproduced. In other words, the extracted content information is removed, and the content information is read by the reading means and reproduced by the reproducing means.

[0048] Next, in step S108, the recording layer switching FLG is set to OFF, and the flow proceeds to step S109.

[0049] Next, in step S109, it is determined whether or not the recording layer switching operation or the recorded recording layer that has been reproduced has been reproduced to the end. Proceed to step S110, otherwise return to step S107.

[0050] Next, in step S110, the determination result as to whether or not it is a hybrid disk determined in step S103 is read. If it is a hybrid disk (YES), the process proceeds to step S111, and if not (NO In the case of), the process returns to step S107.

[0051] Next, in step S111, the control data and the reproduction state are held in the memory 8, and the process proceeds to step S112.

Next, in step S 112, parameter settings such as the optical pickup 3 and the servo corresponding to the recording layer to be reproduced next are changed, and the process proceeds to step S 113.

Next, in step S113, the recording layer switching FLG is set to ON, and step S10 Return to 3.

[0054] According to the present embodiment, when reproducing a hybrid disc in which two recording layers of HD-DVD layer and DVD layer are reproduced, the control data power of each recording layer is read. Title name, chapter name, reproduction The time is stored in the memory 8, and the played chapter is stored in the memory 8 as read. Then, when the recording layer is switched, the title of the recording layer, the name of the chapter, and the playback time of the recording layer that have been reproduced first are compared, and the chapter of the recording layer after switching that matches these is set to the read state. The read chapter is not played back during playback of the recording layer after switching. In this way, since the chapter that matches the previously played back recording layer is not played back, the same content information is not played back repeatedly, and the chapter that matches the previously played back recording layer is excluded. Therefore, it is possible to easily retrieve content information recorded on only one recording layer.

In the above-described embodiment, only the title name and the chapter name are extracted by removing the chapters other than the overlapping chapters by removing the chapters whose title names, chapter names, and playback times all match. May be extracted using.

Example 2

[0056] Next, an optical disk reproducing apparatus 1 useful for the second embodiment of the present invention will be described with reference to FIG. 12 to FIG. The same parts as those of the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

In the present embodiment, the method for comparing the content name'reproduction state between the reproduced recording layer and the current recording layer in step S106 in the flowchart of FIG. 5 is different from that of the first embodiment. Since the chapter name and title name are not necessarily recorded in the control area of the optical disc 12, comparison is made with the title number, chapter number (ie, playback order) and playback time. The detailed operation of step S106 of the present embodiment will be described with reference to the flowchart of FIG. 12 and FIGS. 13 to 16. In this embodiment, an example of the contents of the HD-DVD layer is shown in FIG. 13, and an example of the contents of the DVD layer is shown in FIG.

First, in step S20r, the reproduction time of the recording layer before switching and the reproduction time of the recording layer after switching are compared with each other in order of reproduction to select a matching chapter, and the process proceeds to step S202. Compare the playback time of the recording layer before switching with the playback time of the recording layer after switching. HD—DVDs and DVDs are played back in ascending order of title numbers, and the first [Chapter No. 1, 2 [Chapter No. 2, 3] [Chapter No. 3 • Played in the order of. Therefore, the playback times are compared in the order of playback for each title. For example, comparing FIG. 13 and FIG. 14, the chapters to be played back first and second in title No. 1 are selected as shown in FIG. However, the third and fourth playback chapters are not selected because the playback times do not match. In Fig. 14, there are chapters to be played back in the fifth and sixth titles in title No. 1, but they are not selected in Fig. 13, so they are not selected. Next, when comparing title No. 2 in the same way, the playback times are the same for all chapters that are played back first, second, and third, so select them as shown in FIG.

Next, in step S202, among the chapters that match in the recording layer after switching, the chapter that has been read in the recording layer before switching is regarded as read. Of the chapters selected in FIG. 15, those that have been read in the recording layer before switching are set to the read state as shown in FIG. That is, for each content information playback order, the content information playback time stored in the content name storage means is compared with the playback time of the recording layer to be played back. Content information to which reproduced information is added is extracted.

[0060] According to the present embodiment, when reproducing a hybrid disc in which two recording layers, the HD-DVD layer and the DVD layer, are reproduced, the control data power of each recording layer is read in the reproduction order (title No. , Chapter number), and playback time are stored in the memory 8, and during playback, the played chapter is stored in the memory 8 as already read. If the playback times are compared and matched in the playback order of the previously played back recording layer when the recording layer is switched, if the chapter of the recording layer before switching is already read, the chapter of the recording layer after switching is changed. Mark as read. The read chapter is not played back when the recording layer after switching is played back. In this way, since the chapter that matches the previously played back recording layer is not played back, the same content information is not played back repeatedly, and the chapter that matches the previously played back recording layer is excluded. The title name and chapter name are recorded. /, The optical disc 12 can be easily searched for content information recorded only on one recording layer.

Example 3 Next, an optical disk reproducing apparatus 1 useful for the third embodiment of the present invention will be described with reference to FIGS. 17 to 19. The same parts as those in the first and second embodiments described above are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, the content name 'reproduction state comparison method between the reproduced recording layer and the current recording layer in step S106 in the flowchart of FIG. 5 is different from the first and second embodiments. Since the chapter name and title name are not necessarily recorded in the control area of the optical disc 12, the title number, chapter number (that is, playback order) and playback time are compared. The detailed operation of step S106 of the present embodiment will be described with reference to the flowchart of FIG. 17 and FIGS. In the present embodiment, an example of the contents of the HD-DVD layer will be described below with reference to FIG. 13 similar to the second embodiment, and an example of the contents of the DVD layer will also be illustrated in FIG. 14 similarly to the second embodiment. .

[0063] First, in step 320Γ, the playback time of the recording layer before switching and the playback time of the recording layer after switching are compared in order of playback, and a matching chapter is selected. If they do not match, the chapter before switching is selected. Select a chapter that matches the playback time of the chapter after switching that is played back after the playback order of step S202, and proceeds to step S202. For example, when comparing FIG. 13 and FIG. 14, the chapters that are played back first and second in title No. 1 are selected as shown in FIG. The third playback chapter is not selected because the playback time does not match. The steps so far are the same as in the second embodiment. Here, when searching for the third or later chapter of title 1 in Fig. 14 that matches the playback time (30) of the third chapter played in Fig. 13, the fourth played chapter matches. So select as shown in Figure 18. Similarly, the fourth playback chapter in FIG. 13 does not have the same playback time as the fourth playback chapter in FIG. 14, but from the playback time of the fourth playback from title 1 in FIG. When searching, the fifth playback chapter matches, so select as shown in FIG. Next, in the same comparison for title No. 2, the playback times of all the first, second, and third playback chapters are the same, so select as shown in FIG. That is, when the reproduction time of the content information stored in the content name storage means for each reproduction order of the content information is compared with the reproduction time of the recording layer to be reproduced from now on, when the power is not consistent, Recorded in the content name storage means It is remembered that the playback time is compared with the playback time of the content information that is played back after the play order in which the recording layer to be played back does not match. For example, if the title 1 of the DV D layer records the same information as the title 1 of the HD-DVD layer, and the chapter of only the DVD layer is recorded between chapters 2 and 3, Only the chapter can be discriminated.

[0064] Next, in step S202, among the matched chapters in the recording layer after switching, the chapter that has been read in the recording layer before switching is regarded as read. Of the chapters selected in FIG. 15, those already read in the recording layer before switching are set to the read state as shown in FIG.

[0065] According to the present embodiment, when reproducing a hybrid disc in which two recording layers of the HD-DVD layer and the DVD layer are reproduced, the reproduction order (title No. , Chapter number), and playback time are stored in the memory 8, and during playback, the played chapter is stored in the memory 8 as already read. When the recording layers are switched, the playback times are compared in the order of playback of the previously played back recording layers, or match the playback times of the chapters after switching that are played back after the playback order of the chapters before switching. In this case, when the chapter of the recording layer before switching is already read, the chapter of the recording layer after switching is set to the read state. When the recording layer is switched after switching, the chapter that has been read is not played back. In this way, since the chapter that matches the previously played back recording layer is not played back, the same content information is not played back repeatedly, except for the chapter that matches the previously played back recording layer. Therefore, it is possible to easily search for content information recorded on only one recording layer on the optical disc 12 where a title name and a chapter name are recorded and which are V-like. Furthermore, even if the content information is recorded only on one recording layer in the middle of the title and recorded, the search can be performed.

[0066] In the above-described embodiment, the extracted chapter is reproduced! /, But the chapter extracted without being reproduced immediately, for example, on the menu screen displayed on the operation unit 13 or the like, It is possible to distinguish extracted content information and other content information, such as displaying colors and marks so that chapters can be distinguished, displaying chapters extracted on another screen, or other chapters. It may be displayed.

[0067] Further, in the above-described embodiment, a dual-layer hybrid disc of HD—DVD layer and DVD layer is used. However, the present invention is not limited to this, and the present invention may be applied to a hybrid disk in which a plurality of layers of three or more layers (three or more types) are formed. In other words, a chapter that has been played back in a recording layer that has been played back in the past may be extracted by extracting a chapter that overlaps the chapter and removing the extracted chapter.

[0068] In the above-described embodiment, an example in which the HD—DVD layer is played back and then the DVD layer is played back has been described. For example, the HD—DVD layer is played back, and the DVD layer is played back again. You may refer to the read status of the memory 8 when playing the HD—DVD layer. This is because, when the DVD layer is played first, if you try to play the HD—DVD layer by playing all but the title name “A” and the chapter name “O” in Figure 6, the HD—DVD layer is already read.ヽ will play only the title name `` A '' and the chapter name `` O '' that are not played if you refer to the contents of memory 8 when playing the DVD layer again here. can do.

[0069] In the above-described embodiment, the HD-DVD and DVD hybrid disc has been described. However, the identification name, playback time, playback order, etc. are recorded in a management area such as a Blu-ray disc or Video-CD. The recording layer may be applied to an optical disc formed by combining them to form a multilayer.

[0070] The title name, chapter name, playback time, and read state stored in the memory 8 may be cleared when the optical disc 12 is taken out from the optical disc playback apparatus 1, or may be left as it is. Also good. If it is left as it is, it is possible to reproduce only the chapter that has not been reproduced before by referring to the contents of the memory 8 when the same optical disk 12 is set next time. In addition, the memory 8 may determine the selection and capacity of volatile or non-volatile depending on the title name, the chapter name, and the ability to leave the playback time.

According to the embodiment described above, the following optical disc playback device, optical disc playback method, and optical disc playback program can be obtained.

(Additional remark 1) An optical pickup 3 that reads a chapter from an optical disc 12 having a plurality of recording layers on which a plurality of chapters are recorded, and a voice Z video signal processing section 7 that reproduces the chapter read by the optical pickup 3 In an optical disk playback device 1 equipped with

Memory 8 that stores title names, chapter names, and playback times recorded in multiple recording layers; When the recording layer to be played back is switched, the title name, chapter name and playback time of the recording layer to be played back are compared with the title name, chapter name and playback time of the recorded recording layer stored in the memory 8. And a microcomputer 11 that extracts title chapters, title names, and playback times that overlap.

An optical disc reproducing apparatus comprising:

[0073] According to the optical disc reproducing apparatus 1, since the overlapping portion is extracted when the same chapter is recorded in a plurality of recording layers, the same chapter may be reproduced if the portion other than the overlapping portion is reproduced. Even chapters recorded in only one recording layer can be easily searched because it is sufficient to eliminate overlapping chapters.

(Supplementary Note 2) In an optical disc reproducing method of reading a chapter from an optical disc 12 having a plurality of recording layers on which a plurality of chapters are recorded and reproducing the read chapter, title names recorded on the plurality of recording layers When the recording layer to be played back is switched, the title name of the recording layer to be played back, the chapter name and the playback time are memorized !, the title name of the recorded recording layer, A method of reproducing an optical disk, comprising comparing a chapter name and a reproduction time and extracting a chapter having a title name, a chapter name and a reproduction time overlapping.

[0075] According to this optical disc reproducing method, since the same portion is extracted when the same chapter is recorded on a plurality of recording layers, the same chapter is not reproduced if the portion other than the overlapping portion is reproduced. The chapters recorded only in one recording layer can be easily searched because it is sufficient to eliminate the overlapping chapters.

(Supplementary Note 3) The computer of the optical disc playback apparatus 1 having the optical pickup 3 for reading the chapter from the optical disc 12 having a plurality of recording layers on which a plurality of chapters are recorded is replaced with the chapter read by the optical pickup 3. In the optical disc playback program that functions as step S107 for playback,

Step S104 for storing title names, chapter names and playback times recorded in a plurality of recording layers;

When the recording layer to be played back is switched, the title, chapter name, and playback time of the recording layer to be played back and the tightness of the recorded recording layer stored in step S104 are displayed. The title name, chapter name, and playback time are compared to extract a chapter with a duplicate title name, chapter name, and playback time, and step S106.

And a computer-readable optical disc reproduction program characterized by causing the computer to function.

[0077] According to this optical disc reproduction program, the same chapter is recorded on a plurality of recording layers, and when the same portion is extracted, the same chapter can be reproduced if other portions are reproduced. Even chapters recorded in only one recording layer can be easily searched because it is sufficient to exclude overlapping chapters.

It should be noted that the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

Claims

The scope of the claims

[1] A reading means for reading the content information from an optical disc card provided with a plurality of recording layers on which a plurality of content information is recorded, and a reproducing means for playing back the content information read by the reading means. In the optical disc playback apparatus,

Content name storage means for storing a content name corresponding to the content information recorded in the reproduced recording layer;

When the recording layer to be played back is switched, the content name of the recording layer to be played back is compared with the content name of the played back recording layer stored in the content name storage means, and the content name is duplicated. A control means for extracting the content information;

An optical disc reproducing apparatus comprising:

[2] Reproduced information adding means for adding reproduced information to the content name corresponding to the reproduced content information among the content names stored in the content name storage means,

When the recording layer to be played back is switched, the control unit compares the content name of the recording layer to be played back with the content name stored in the content name storage unit, and the content name is duplicated. 2. The optical disc reproducing apparatus according to claim 1, wherein the content information to which the reproduced information is added is extracted.

3. The optical disk reproducing apparatus according to claim 1, wherein the control means reads out the extracted content information and causes the reading means to read and cause the reproducing means to reproduce.

[4] Recorded on the recording layer! A display means capable of displaying a list of the content information;

3. The optical disk reproducing apparatus according to claim 1, wherein the control unit causes the display unit to display the extracted content information and other content information in a distinguishable manner.

[5] The content name stored in the content name storage means is the management of the recording layer. 5. The optical disc playback apparatus according to claim 1, wherein the disc is recorded with at least one of an identification name, a playback time, and a playback order recorded in the area.

[6] For each reproduction order of the content information, the control means determines the reproduction time of the content information stored in the content name storage means and the reproduction time of the recording layer to be reproduced from now on. 6. The optical disk reproducing apparatus according to claim 5, wherein comparison is made.

[7] The control means compares the reproduction time of the content information stored in the content name storage means with the reproduction time of the recording layer to be reproduced from now on for each reproduction order of the content information. When there is a discrepancy, the content of the recording layer to be reproduced from now on is reproduced after the reproduction order that does not coincide with the reproduction time stored in the content name storage means. 7. The optical disk reproducing device according to claim 6, wherein the information reproducing time is compared.

8. The optical disc reproducing apparatus according to any one of claims 1 to 7, wherein the plurality of recording layers of the optical disc are read by laser beams having different wavelengths.

[9] In an optical disc reproducing method of reading the content information from an optical disc cassette provided with a plurality of recording layers on which a plurality of content information is recorded, and reproducing the read content information,

The content name corresponding to the content information recorded in the plurality of recording layers is stored, and when the recording layer to be reproduced is switched, the content name of the recording layer to be reproduced and the recording layer of the reproduced recording layer are recorded. An optical disc reproduction method, comprising: comparing content names stored and extracting the content information with duplicate content names! /

[10] An optical disk reproducing apparatus provided with a reading means for reading the content information from an optical disk camera provided with a plurality of recording layers on which a plurality of content information is recorded, and the content information read by the reading means is In an optical disc playback program that functions as a playback means for playback, Content name storage means for storing content names corresponding to the content information recorded in the plurality of recording layers;

When the recording layer to be played back is switched, the content name of the recording layer to be played back is compared with the content name of the played back recording layer stored in the content name storage means, and the content name is duplicated. And a control means for extracting the content information.

And a computer-readable optical disk reproduction program characterized by causing the computer to function.

11. A computer readable recording medium storing the optical disk reproduction program according to claim 10.