JP2009015936A - Optical disk recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk recording and reproducing device which enables recording in the Video format even on a DVD+R optical disk. <P>SOLUTION: When recording a first title, this device records VTSTT_VOBS real-time without leaving a space in the data area, and also records VTSI_BUP. If there is a second title to record, it records VTSTT_VOBS real-time in the data area for the second title, and also records VTSI_BUP. If there is no more title to record, it finishes title recording on the optical disk. Once finalizing takes place, it records the file system and VMGI in the reserved area and further records VTSIs as many as titles. Through the above processing, the DVD+R optical disk is made recordable in the video format. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical disc recording / reproducing apparatus for recording information on an optical disc and reproducing information recorded on an optical disc.

  In recent years, DVDs (digital versatile discs), which are optical discs capable of recording a large amount of information such as video and audio data such as television programs and movies, have become widespread. As types of DVDs, a DVD-ROM in which information is recorded on the manufacturer side and cannot be rewritten on the user side, a DVD-R or DVD + R on which information can be recorded only once on the user side, and a DVD- that can be rewritten a specified number of times on the user side. RW and DVD + RW are known. Information recorded on these DVDs can be played back by an optical disk playback device (DVD player) or an optical disk recording / playback device (DVD recorder), and information recording on DVD-R, DVD + R, DVD-RW, DVD + RW is possible. It is possible with an optical disk recording / reproducing apparatus (DVD recorder).

  Here, recording and reproduction with respect to the DVD + R optical disc among these types of optical discs will be described. The recording and reproduction processing for the DVD + R optical disk performed by the conventional optical disk recording / reproducing apparatus is performed as follows.

  First, recording control on a DVD + R optical disk performed by a conventional optical disk recording apparatus will be described. A DVD + R optical disc is inserted into the apparatus and loaded (a mount process for reading disc information), whereby it is determined that the optical disc is a DVD + R optical disc. Thereafter, recording on the DVD + R optical disc is started in the + VR mode (DVD + R VR format) in response to the recording key operation of the remote controller or the recording start time by the recording reservation (recording reservation).

  In this way, recording on the optical disk is started, and information to be recorded first is recorded in the data area of the optical disk as a title T1, and when the recording of the title T1 is completed, the title of the title T1 is followed by the title T1. RSAT (Reserved Space Allocation Table) indicating information is recorded. The information to be recorded next is recorded as a title T2 in the data area of the optical disc. When the recording of the title T2 is completed, the RSAT indicating the title information of the title T2 is recorded after the title T2. Further, the information to be recorded next is recorded as a title T3 in the data area of the optical disc. When the recording of the title T3 is finished, the RSAT indicating the title information of the title T3 is recorded after the title T3.

  Next, a reproduction process for a DVD + R optical disk performed by a conventional optical disk recording apparatus will be described.

First, when a DVD + R optical disk is inserted into the apparatus and loaded, it is determined that the optical disk is a DVD + R optical disk, and a list of titles recorded on the optical disk is displayed on the display device as a reproduction list. Then, when the user operates the remote controller to select / determine a title to be reproduced from the reproduction list, the optical disc recording / reproducing apparatus reads the RSAT of the title, and based on this RSAT, the file system, control information, etc. Analyze and play the title.
JP 2004-164809 A JP 2006-107665 A

  However, in the case of an optical disc recording / reproducing apparatus in which Video format software that enables recording / reproduction of information on a DVD-R or DVD-RW optical disc is stored in a flash ROM, Since VR format software that enables recording of information is not stored in the flash ROM, information cannot be recorded on a DVD + R optical disc. Therefore, an optical disc recording / reproducing apparatus in which both Video format and VR format software are stored in the flash ROM can be considered. In this case, both the Video format license fee and the VR format license fee are required. The capacity of the flash ROM for storing such software increases, resulting in a problem that the cost of the optical disc recording / reproducing apparatus increases.

  In the prior art disclosed in Patent Document 1, when a program being broadcast on a television is recorded on a DVD + R optical disc on the spot, user data is recorded prior to management information recording in response to a user data recording request. The management information is recorded after the user data is recorded. However, since the format for recording information on the DVD + R optical disk is the VR format, the above-described problems cannot be solved.

  The prior art of Patent Document 2 discloses a case where information is recorded on a DVD-R optical disc in a video format, but does not disclose a case where information is recorded on a DVD + R optical disc.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disc recording / reproducing apparatus capable of recording a DVD + R optical disc in the Video format.

  In order to achieve the above object, according to the first aspect of the present invention, when the inserted optical disc is an optical disc of the DVD + R standard and a title is recorded on the optical disc in the video format, a video title set is recorded in the recording of one title. Only the backup of the video object set and video title set information included in the file is recorded, the file system and video management information are recorded in the reserved area at the time of finalization, and the video title set information is present on the optical disc by recording the title Provided is an optical disc recording / reproducing apparatus including a system controller for recording only the title.

  According to this configuration, since the DVD + R optical disc can be recorded in the video format, the DVD + R, DVD-R, and DVD-RW optical disc can be used only by adopting the video format as the information recording format of the optical disc recording / reproducing apparatus. Recording is possible, and the license fee is only the Video format license fee. Also, as the information recording format, only the Video format software needs to be stored in the flash ROM. It's small. Therefore, an optical disk recording / reproducing apparatus adopting only the Video format can record on a DVD + R optical disk without increasing the cost, and adopts both the Video format and the VR format. If only the video format is used, the license fee is reduced and the capacity of the flash ROM can be reduced, so that the cost can be reduced and recording is also performed on the DVD + R optical disc. Can do.

  According to a second aspect of the present invention, in the first aspect of the invention, when the inserted optical disc is a DVD + R standard optical disc and a title is recorded on the optical disc in the video format, the video title of the title is recorded. Video object set recording means for recording a video object set included in a set in a data area of the optical disc, and backup recording means for recording a backup of video title set information in the data area of the optical disc after recording the video object set And the video object set recording means and the backup recording means are repeated until there is no title to be recorded, and when there is no title to be recorded, the recording end means for ending the recording, and the recording And a reserved area recording means for starting finalization when the finalizing instruction is received after completion and recording a file system, video management information, and video title set information in the reserved area of the optical disc. .

  Therefore, the system controller can realize the video object set recording process, the backup recording process, the recording end process, and the reserved area recording process, whereby the DVD + R optical disc can be recorded in the video format, and the optical disc recording / reproducing apparatus Recording only on DVD + R, DVD-R, and DVD-RW optical discs is possible simply by adopting only the Video format as the information recording format.

  In the invention of claim 3, in the invention of claim 1 or claim 2, the video object set included in the video title set is VTSTT_VOBS of the DVD standard, and the backup of the video title set information is of the DVD standard. VTSI_BUP, and the video title set information is DVD standard VTSI. Therefore, even a DVD + R optical disc can record information in accordance with the Video format.

  As described above, according to the present invention, the DVD + R optical disc can be recorded in the video format. Therefore, only the video format is adopted as the information recording format of the optical disc recording / reproducing apparatus, so that the DVD + R, DVD-R, DVD- Recording on the RW optical disc is possible, and the license fee is only the video format license fee. Also, as the information recording format, only the video format software needs to be stored in the flash ROM. The capacity of is small.

  Therefore, an optical disk recording / reproducing apparatus adopting only the Video format can record on a DVD + R optical disk without increasing the cost, and adopts both the Video format and the VR format. If only the video format is used, the license fee is reduced and the capacity of the flash ROM can be reduced, so that the cost can be reduced and recording is also performed on the DVD + R optical disc. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of an optical disc recording / reproducing apparatus according to an embodiment of the present invention.

  The optical disk recording / reproducing apparatus includes a system controller 22 that controls the entire apparatus, a spindle motor 5 that rotates the optical disk 1, an optical pickup 2 that optically writes / reads information to / from the optical disk 1, and the optical pickup. The spindle motor 5 and the sled 3 are driven through the motor driving circuit 34 according to the instruction of the system controller 22 and the sled 3 for moving the optical disc 2 in the radial direction of the optical disc 1 and the objective incorporated in the optical pickup 2 And a servo control unit 4 that performs control to move the focal position of the laser light in the vertical direction and the horizontal direction with respect to the recording surface of the optical disc 1 by moving a lens (not shown).

  The optical disc recording / reproducing apparatus also amplifies an RF signal which is a read signal from the optical pickup 2 during reproduction of the optical disc 1 and converts the RF signal output from the RF amplifier 6 into digital data. A digital signal processing unit 8 that stores data generated by performing signal demodulation processing and error correction processing according to the data format of the optical disc 1 in a RAM 7 as a buffer memory, and a digital signal processing unit 8 according to an instruction from the system controller 22 Is provided with a stream separation unit 9 that separates audio data, sub-picture data, and video data from the data stream output from.

  The optical disc recording / reproducing apparatus also receives an audio decoder 11 that receives the audio data output from the stream separation unit 9 and performs a predetermined decoding process, and temporarily stores the data to perform the decoding process in the audio decoder 11. The RAM 10 to be stored in the sub-picture decoder 13, the sub-picture decoder 13 that inputs the sub-picture data output from the stream separation unit 9 and performs a predetermined decoding process, and the sub-picture decoder 13 temporarily stores the data to perform the decoding process. A video MPEG decoder 15 that receives the video data output from the stream separation unit 9 and decodes it in MPEG, and temporarily stores the data for decoding in the video MPEG decoder 15. RAM 14 for storing.

  The optical disk recording / reproducing apparatus also includes a video processor 17 that synthesizes the data output from the video MPEG decoder 15 and the data output from the sub-picture decoder 13 in accordance with an instruction from the system controller 22, and the video processor 17. A video encoder 18 that converts the output synthesized data into a video signal for display and displays an image on the display device 20, and an audio circuit (not shown) that converts the data output from the audio decoder 11 into an analog audio signal. For example, a D / A converter 16 supplied to the speaker 19 is provided.

  The optical disc recording / reproducing apparatus also performs various operations such as a recording key for giving a recording instruction to the system controller 22, a reproducing key for giving a reproducing instruction, and a stop key for giving a recording / reproducing stop instruction. A remote controller 21 having keys and a main body operation unit (not shown) having fewer operation keys than the operation keys of the remote controller 21 are provided. The optical disc recording / reproducing apparatus also includes a flash ROM 23 storing a program for controlling each component of the apparatus or controlling the entire apparatus, a video format software (program), and the like, and the flash ROM 23. The CPU 24 controls the system controller 22 by performing arithmetic processing according to the programs and data, and the RAM 27 temporarily stores data necessary for the arithmetic processing of the CPU 24.

  The optical disk recording / reproducing apparatus also includes a tuner 29 connected to an antenna 28, an analog video / audio signal of a television broadcast selected by the tuner 29, or a television receiver or other video / audio output not shown. An A / D conversion circuit 30 that converts a video / audio signal from a device into digital video / audio data, an MPEG encoder 31 that encodes the video / audio data in MPEG, and the encoded video / audio data (hereinafter referred to as encoded data). RAM 32 as a buffer memory for temporarily storing a predetermined amount of data, ATAPI (AT Attachment Packet Interface) 33 as an interface connected to the recording data modulation circuit 25, and encoded data sent from the ATAPI 33 to the optical disc 1 Note that the modulation is applied to record A data modulation circuit 25; and a laser modulation circuit 26 that outputs a laser modulation signal for modulating the laser beam emitted from the optical pickup 2 to the optical pickup 2 based on the modulation data modulated by the recording data modulation circuit 25. I have.

  As a feature of the present embodiment, the system controller 22 is an optical disc of the DVD + R standard, and when a title is recorded on the optical disc in the video format, the recording of one title is included in the video title set. Only the backup of the video object set and video title set information is recorded, the file system and video management information are recorded in the reserved area at the time of finalization, and the video title set information is recorded for the titles existing on the optical disc by recording the title. Let me record.

  When the inserted optical disc is a DVD + R standard optical disc and a title is recorded on the optical disc in the video format, the system controller 22 converts the video object set included in the video title set of the title into the data of the optical disc. Video object set recording means for recording in an area, backup recording means for recording a backup of video title set information in the data area of the optical disc after recording the video object set, and a video object set until there is no title to be recorded The process of the recording means and the backup recording means is repeated, and when the title to be recorded is exhausted, the recording end means for ending the recording, and the finalizing instruction is received after the recording ends. Can, to start the finalizing, the reserved area of the optical disk, and a reserved area recording means for recording the file system and video management information and video title set information.

  FIG. 2 is a data structure diagram showing a procedure when recording is performed on a DVD + R optical disc in the DVD + R Video format in this embodiment. With reference to FIG. 2, a procedure for recording in a DVD + R Video format on a DVD + R optical disc will be described.

  In the DVD + R Video format, as shown in FIG. 2 (1), the first title records VTSTT_VOBS (Video Object Set for Titles in a VTS) 101 in real time without leaving an area in advance in the data area D. At the end of this recording, VTSI_BUP (Backup of VTSI) 102 is continuously recorded. VTSI means Video Title Set Information.

  As shown in FIG. 2 (2), only the VTSTT_VOBS 103 and the VTSI_BUP 104 are recorded in the second title, and VTSI is not recorded. Similarly for the third and subsequent titles, although not shown, only VTSTT_VOBS and VTSI_BUP are recorded, and VTSI is not recorded.

  In the finalizing process, as shown in FIG. 2 (3), the file system 105 and the VMGI 106 are recorded in the reserved area R, and VTSI (# 1) 107 and VTSI (VTSI (# 1) 107 and VTSI (in this example) are recorded for the number of titles. # 2) 108 is recorded.

  Since DVD-R optical discs can be recorded in advance with a space according to the standard, VTSI, VTSTT_VOBS, and VTSI_BUP can be recorded at a time by recording one title. Since it is not possible to record because there is not enough space (the number of sessions becomes insufficient when recording with space), in the case of recording one title, only VTSTT_VOBS and VTSI_BUP are recorded, and only the titles that have VTS existing in the reserved area at the time of finalization are recorded. To do.

  Here, as a reference, a procedure for recording on a DVD-R optical disc in the DVD-R Video format will be described. FIG. 3 is a data structure diagram showing a procedure for recording on a DVD-R optical disc in the DVD-R Video format. With reference to FIG. 3, a procedure for recording on a DVD-R optical disc in the DVD-R Video format will be described.

  In the DVD-R Video format, as shown in FIG. 3 (1), the first title is recorded in advance in the data area D, and then VTSTT_VOBS 201 is recorded in real time. Continue to record. Next, as shown in FIG. 3 (2), the VTSI 203 is recorded in a previously vacated area.

  For the second title, as shown in FIG. 3 (3), VTSTT_VOBS 204 is recorded in real time in data area D, VTSI_BUP 205 is further recorded at the end of this recording, and finally VTSI 206 is recorded. Similarly, although not shown, VTSTT_VOBS, VTSI_BUP, and VTSI are recorded after the third title.

  In the finalizing process, the file system 207 and the VMGI 208 are recorded in the reserved area R as shown in FIG.

  FIG. 4 shows the data after recording once, after recording twice, after changing the title name, after deleting the title, and after finalizing when each data of the title is recorded in the DVD + R Video format on the DVD + R optical disc in this embodiment. FIG. Referring to FIG. 4, the data after recording once, after recording twice, after changing the title name, after deleting the title, and after finalizing when each data of the title is recorded in the DVD + R video format on the DVD + R optical disc. FIG.

  After the title is recorded once, as shown in FIG. 4 (1), VTSTT_VOBS (# 1) 301 is recorded in real time in the data area without first vacating the area in the first title. Furthermore, VTS (# 1) 302 and Small_VMGI 303 are recorded as VTSI_BUP. VMGI is video management general information. Small_VMGI 303 is information indicating the number of titles (1), the IFO file, the VOB file, the start address of the BUP file, the title name, and the like.

  After the recording of the title twice, as shown in FIG. 4 (2), VTSTT_VOBS (# 2) 304 is recorded in the data area in real time for the second title, and at the end of this recording, VTSI (VTSI_BUP) # 2) 305 and Small_VMGI 306 are recorded.

  After the title name is changed, Small_VMGI 307 is recorded in the data area as shown in FIG. Small_VMGI 307 is information indicating the number of titles (2), the IFO file, the VOB file, the start address of the BUP file, the title name (changed title name), and the like.

  After the title is deleted, Small_VMGI 308 is recorded in the data area as shown in FIG. Small_VMGI 308 is information indicating the number of titles (1), IFO file, VOB file, start address of BUP file, title name, and the like. The number of titles (1) indicates that one with two titles is deleted and the number of titles is one.

  After the finalization, as shown in FIG. 4 (5), 0 clear 309 is set in the data area, and a second anchor spot 310 is set. Next, in the reserved area, Volume_and_File_Structure 311, VMGI 312, VMGM_VOBS (Video Management Menu Video Objects) 313, VMGI_bup 314, VTSI (# 1) 315, and VTSI (# 1) 316 are recorded. VTS is a video title set. Note that the VMGI 312, VMGM_VOBS 313, and VMGI_bup 314 are recorded in a VMG area corresponding to the VMG area, which is an area for recording the VMGI 106 shown in FIG.

  The data structure shown in FIG. 4 described above is based on the data structure shown in FIG. 2, and is not limited to the data structure shown in FIG.

  FIG. 5 is a flowchart for explaining the flow of the data recording procedure shown in FIG. With reference to this flowchart and FIG. 1 and FIG. 2, the processing in the case of recording in the DVD + R Video format on the DVD + R optical disc will be described.

  A description will be given on the assumption that a television program (title) selected by the tuner 29 is recorded after the DVD + R optical disc 1 is inserted into the optical disc recording / reproducing apparatus and started up. When a recording operation is performed by the remote controller 21 or the like, the system controller 22 detects that a recording instruction has been given (step S1), and starts recording a title (step S2). In the optical disk recording / reproducing apparatus, as described with reference to FIG. 1, the operations of the tuner 29, A / D conversion circuit 30, MPEG encoder 31, RAM 32, ATAPI 33, recording data modulation circuit 25, laser modulation circuit 26, optical pickup 2, etc. Then, the television program (title) is recorded on the optical disc 1.

  In the DVD + R Video format, the video object set recording means of the system controller 22 records the VTSTT_VOBS 101 in real time in the data area D of the optical disc 1 in advance in the data area D of the optical disc 1 (step S3). Further, the backup recording means of the system controller 22 records VTSI_BUP 102 in the data area D of the optical disc 1 (step S4).

  If there is a title to be recorded, the processes in steps S3 to S5 are repeated. That is, if there is a second title, similarly, for the second title, the video object set of the system controller 22 records VTSTT_VOBS 103 in the data area D of the optical disc 1 in real time (step S3). At the end, the backup recording means of the system controller 22 records the VTSI_BUP 104 in the data area D of the optical disc 1 (step S4).

  When there are no more titles to be recorded, the system controller 22 stops the recording operation of the optical pickup 1 and the like, and ends the recording of the title on the optical disc 1 (step S6).

  Next, when an operation for finalizing is performed by the remote controller 21, the reserved area recording means of the system controller 22 detects the finalize instruction (step S8), and the file system 105 and the VMGI 106 are stored in the reserved area R of the optical disc 1. In this example, VTSI 107 and VTSI 108 are recorded for the number of titles (step S9).

  As described above, according to the present embodiment, the DVD + R optical disc can be recorded in the video format. Therefore, only the video format is adopted as the information recording format of the optical disc recording / reproducing apparatus, so that the DVD + R, DVD-R, Recording on DVD-RW optical discs is possible, and the license fee is only the video format license fee. As the information recording format, only the video format software need be stored in the flash ROM. The capacity of the flash ROM can be small.

  Therefore, an optical disk recording / reproducing apparatus adopting only the Video format can record on a DVD + R optical disk without increasing the cost, and adopts both the Video format and the VR format. If only the video format is used, the license fee is reduced and the capacity of the flash ROM can be reduced, so that the cost can be reduced and recording is also performed on the DVD + R optical disc. Can do.

  The present invention can be used in an optical disc recording / reproducing apparatus (DVD recorder) that adopts the Video format as an information recording format, and can be recorded in a Video format even on a DVD + R optical disc.

It is a block diagram which shows the structure of the optical disk recording / reproducing apparatus which concerns on one Embodiment of this invention. FIG. 3 is a data structure diagram showing a procedure when recording is performed on a DVD + R optical disc in a DVD + R Video format in the embodiment. It is a data structure figure which shows the procedure in the case of recording with the DVD-R Video format with respect to the DVD-R optical disk. FIG. 4 is a data structure diagram after recording once, after recording twice, after changing the title name, after deleting the title, and after finalizing when each data of the title is recorded in the DVD + R Video format on the DVD + R optical disc in the embodiment. is there. 3 is a flowchart for explaining the flow of a data recording procedure shown in FIG. 2.

Explanation of symbols

1 optical disk 22 system controller (video object set recording means, backup recording means, recording end means, reserved area recording means)

Claims (3)

In an optical disc recording / reproducing apparatus for recording information on an optical disc or reproducing information recorded on an optical disc,
When the inserted optical disc is a DVD + R standard optical disc, and a title is recorded on this optical disc in the video format, only one video object set and video title set information included in the video title set is backed up in recording one title. A system controller is provided for recording and recording a file system and video management information in a reserved area at the time of finalization, and recording the video title set information for the titles existing on the optical disc by recording the title. Optical disc recording / reproducing device. The system controller is
When the inserted optical disc is a DVD + R standard optical disc and a title is recorded on the optical disc in the video format,
Video object set recording means for recording a video object set included in the video title set of the title in the data area of the optical disc;
Backup recording means for recording a backup of video title set information in the data area of the optical disc after recording the video object set;
Until the title to be recorded disappears, the processing of the video object set recording means and the backup recording means is repeated, and when there is no title to be recorded, the recording end means for ending the recording,
And a reserved area recording means for starting the finalization when the finalizing instruction is received after the recording is completed and recording the file system, the video management information, and the video title set information in the reserved area of the optical disc. 2. The optical disc recording / reproducing apparatus according to claim 1, wherein   The video object set included in the video title set is the DVD standard VTSTT_VOBS, the video title set information backup is the DVD standard VTSI_BUPj, and the video title set information is the DVD standard VTSI. The optical disc recording / reproducing apparatus according to claim 1 or 2, wherein

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