JP3785896B2 - Disc recording / playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disc recording / reproducing apparatus for reproducing data based on reproduction control information.
[0002]
[Prior art]
In recent years, with the advancement of data compression technology and high-density recording technology, a high-density recording type optical disc has been developed as a recording medium capable of storing a large amount of data. On such a high-density recording type optical disc, a plurality of image data can be recorded as reproduction data.
[0003]
Such an optical disc is often used to record image data obtained by a user using a camera device or the like. The image data recorded on the optical disk is normally reproduced from the reproduction start position on the inner circumference side of the optical disk, and desired image data is recorded and reproduced while the recording / reproduction head seeks from the inner circumference side toward the outer circumference side. Often to do. The image data recorded in this way is used as a material for performing an editing process such as selection of a required image portion and an instruction for a reproduction order in consideration of scene development at the time of reproduction according to a user instruction.
[0004]
In the image data editing process described above, the contents edited by the user are stored in the optical disc as reproduction control information. Here, as a method for recording the reproduction control information on the optical disc, the first method for recording in a distributed manner in an image file including an image and sound accompanying the image, and reproduction in a file format different from the image file There is a second method of creating and recording a control information file.
[0005]
The reproduction control information (reproduction control information file) recorded on the optical disc in the second method and in the file format is first created after the edited image file is recorded in the unrecorded area of the optical disc. Recorded in a continuous area in the image file. Therefore, the image file after editing processing and the reproduction control information file are arranged in this order from the reproduction start position on the optical disc.
[0006]
Here, a process of recording an image file on an optical disk by the second method will be described.
[0007]
First, a structure management information area for an image file is created on the optical disk with a file size of “0”.
[0008]
Next, a continuous area having a sufficient length for recording an image file is searched from unrecorded areas on the optical disk.
[0009]
Next, data is recorded in a continuous area on the optical disc, and image file structure management information is created.
[0010]
Next, the size of the playback control information file is set to “0”, the structure management information for the playback control information file is created on the optical disc, the created playback control information is recorded, and the playback control information file structure on the optical disc is recorded. Update management information.
[0011]
Subsequently, the root directory structure management information is updated by overwriting a predetermined area of the optical disk.
[0012]
Thus, the optical disk on which the image file is recorded by the second method has a data structure as shown in FIG. That is, as shown in FIG. 5A, the optical disc is provided with a lead-in area 101, a volume space 102, and a lead-out area 103 from the inner circumference side toward the outer circumference side.
[0013]
In the volume space 102, as shown in FIG. 5B, a volume structure management information area 111 for storing information indicating the characteristics of the file recorded on the optical disk from the inner circumference side toward the outer circumference side, an image file And a file area 112 for storing reproduction control information and the like, and a volume structure management information area 113 are provided.
[0014]
In the file area 112, as shown in FIG. 5C, the structure management information area 121 for the root directory, information indicating the structure of the image file, and the like are stored from the inner circumference side toward the outer circumference side. Structure management information area 122, image file area 123 in which an image file is stored, playback control information file structure management information area 124 in which information indicating the structure of playback control information and the like is stored, and playback control in which playback control information is stored An information file area 125 and an unused area 126 are provided.
[0015]
In addition, due to the data size of the unused area, when the image file is divided into a plurality of pieces, reproduction control information about the extent of the image file is recorded on the outer periphery side of the extent (fragment) of the divided image file. Then, following the extent of the other image file, the playback control information for the extent of the other image file is recorded.
[0016]
Such a state occurs when an image file is recorded again as shown in FIG. 5C when the image file is added again. As shown in FIG. 5D, the additionally-recorded image file is recorded as a second extent of the image file in the image file area 130 on the outer peripheral side of the previously recorded reproduction control information file 125.
[0017]
Thereafter, when the size of the playback control information file becomes larger than before by performing an editing operation such as increasing the number of scene break points or designating a plurality of scene playback orders, the increased portion is added to the second portion. Are recorded in the reproduction control information file area 131 on the outer periphery side of the image file area 130 as the extent of the image.
[0018]
Further, the structure management information itself may increase as the number of extents per file increases. In such a case, the increased portion is used as the second extent in the reproduction control information file area 131. Further, it is recorded in the structure management information area 132 for reproduction control information file on the outer peripheral side.
[0019]
Thus, when an image file is divided, the image file is often distributed and recorded in the optical disc.
[0020]
FIG. 6 is a diagram showing a reproduction procedure of the image file divided into the extents in this way. Note that the circled numbers in FIG. 6 indicate the reproduction order, the solid arrow indicates data reading, and the dotted arrow indicates a physical seek.
[0021]
As can be seen from FIG. 6, when reproducing an image file divided into extents, first, the root directory structure management information recorded in the root directory structure management information area 121 is read out, and a reproduction control information file is read out. The start position of the structure management information area 124 is recognized, seek is performed toward the outer periphery, and the reproduction management information file structure management information area 124 is accessed.
[0022]
Next, the playback control information file structure management information is read from the playback control information file structure management information area 124, the start position of the playback control information file area 125 is recognized, and the playback control information file area 125 is accessed to Read reproduction control information of one extent.
[0023]
Next, seek is further performed toward the outer peripheral side to access the reproduction control information file area 131, read out reproduction control information of the second extent, and recognize an image file to be reproduced.
[0024]
Next, in order to reproduce the image file, seek is performed from the reproduction control information file area 131 toward the inner periphery, and the image file structure management information area 122 is accessed to recognize the start position of each image file.
[0025]
Next, after reading the first extent of the image file from the start position of the image file area 123 recognized from the structure management information for the image file, seek to the outer periphery side to read the second extent of the image file, The image file area 130 is accessed to read the second extent of the image file. As a result, it is possible to continuously reproduce the image file recorded by being divided into the first extent and the second extent on the optical disc.
[0026]
[Problems to be solved by the invention]
Here, after the image file editing process in accordance with the user instruction, the image file is further recorded, and when the user performs the second editing process using the image file, the first editing process is performed. Since it becomes necessary to store the reproduction control information and the reproduction control information corresponding to the second editing process in the reproduction control information file, the size of the reproduction control information file may become long.
[0027]
In such a case, the extent of the playback control information file area 131 storing the second playback control information is recorded on the outer periphery side of the playback control information file area 125 storing the playback control information by the first editing process. However, in order to reproduce the image file recorded on the optical disc, it is necessary to refer to the reproduction control information before reading the image file to be reproduced.
[0028]
In this case, as described above, when the playback control information file area 125 is positioned on the outer peripheral side of the image file area 123 storing the image file to be played back, first, after accessing the playback control information file area 125 on the outer peripheral side by seek, Therefore, it becomes necessary to access the image file area 123 on the inner circumference side, and the distance to seek on the optical disk by the recording / reproducing head becomes long.
[0029]
Further, when image files are recorded and edited multiple times, each image file may be recorded in an image file area 123 in a different optical disc. In such a case, the image file area 123 is formed in a dispersed manner on the optical disc, and when the image file is reproduced, a plurality of seek operations are required, and the number of seeks and the seek distance are increased. End up.
[0030]
Therefore, in the method of recording the playback control information file following the image file and the method of recording the image file dispersed in the optical disk, the number of seeks of the recording / reproducing head increases and the seek distance becomes longer. There is a problem that it takes a long time to read an image file after inserting.
[0031]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a disc recording / reproducing apparatus capable of shortening the time required for reproduction by shortening the seek distance when performing reproduction. And
[0032]
[Means for Solving the Problems]
  Claim 1In order to solve the above-described problem, a disk recording / reproducing apparatus divides at least image information and / or audio information and the image information and / or audio information into regions of arbitrary sizes, and records / reproduces them. Area start position informationReportingPlayback that can be arbitrarily edited by the user, including playback order instruction information that indicates the playback order of the area.controlInformation andReproduction control information file structure management information indicating a file structure of the reproduction control information;Recording / reproducing means for recording / reproducing information on / from a disk-shaped recording medium
  The image information and / or audio informationSaidBefore recording on a disc-shaped recording medium,
The playback control information file structure management information is recorded and the playback control information file structure management information area is set on the inner circumference side of the disc-shaped recording medium, and the outer circumference following the playback control information file structure management information area The temporary reproduction control information is recorded as an area for recording the reproduction control information on the side, and a temporary reproduction control information file area is set. On the other hand, the image information and / or the audio information is set more than the temporary reproduction control information file area. After recording on the outer periphery side, the playback control information is overwritten on the temporary playback control information.Control means for controlling the recording / reproducing means.
[0033]
  Also,Claim 2In order to solve the above-described problem, the disk recording / playback apparatus is configured to perform the playback after editing.controlIt is enough as data size of information,SaidRegenerationcontrolThe difference in size from the minimum information size is smaller than the minimum recording unit of the image information and / or audio information.SaidTemporary playbackcontrolThe recording / reproducing means is controlled so that information is formed and recorded on the disc-shaped recording medium.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
The present invention can be applied to, for example, an optical disc recording / reproducing apparatus 1 as shown in FIG. The optical disc recording / reproducing apparatus 1 according to the embodiment of the present invention records and reproduces image data and / or audio data on an optical disc 2 a built in the disc drive 2. The disk drive 2 includes a recording / reproducing head that scans the optical disk 2a to perform a recording / reproducing operation, and performs a recording / reproducing process according to an input control command.
[0037]
In this optical disk recording / reproducing apparatus 1, image data generated by the video camera 3 is input to the disk drive 2 via the video input processor 4, the video encoder 5, and the multiplexer 6.
[0038]
The video camera 3 includes, for example, a CCD (Charge Coupled Device) image sensor, and supplies an image signal generated by the CCD image sensor to the video input processor 4.
[0039]
The video input processor 4 performs predetermined signal processing such as analog-digital conversion processing and format conversion processing on the image signal from the video camera 3 to obtain image data for subsequent processing. The video input processor 4 supplies image data to the video encoder 5.
[0040]
The video encoder 5 compresses the image data by subjecting the image data from the video input processor 4 to processing according to, for example, the MPEG (Moving Picture Experts Group) system, generates a video data stream, and supplies the video data stream to the multiplexer 6.
[0041]
In the optical disc recording / reproducing apparatus 1, the sound detected by the microphone 7 is supplied to the disc drive 2 via the audio input processor 8, the audio encoder 9, and the multiplexer 6.
[0042]
The microphone 7 collects external audio and generates an audio signal accompanying the image signal generated by the video camera 3, for example. The microphone 7 supplies the generated audio signal to the audio input processor 8.
[0043]
The audio input processor 8 performs predetermined signal processing such as analog-digital conversion processing and format conversion processing on the audio signal from the microphone 7 to obtain audio data for subsequent processing. The audio input processor 8 supplies audio data to the audio encoder 9.
[0044]
The audio encoder 9 performs processing according to a predetermined method on the audio data from the audio input processor 8 to compress the audio data to generate an audio data stream, and outputs the audio data stream to the multiplexer 6.
[0045]
The multiplexer 6 superimposes the video data stream from the video encoder 5 and the audio data stream from the audio encoder 9 to generate a single data stream. Here, the multiplexer 6 superimposes the video data stream and the audio data stream for each predetermined amount of data and supplies them to the disk drive 2. The multiplexer 6 supplies a data stream to a CPU (Central Processing Unit) 19.
[0046]
Further, in the optical disc recording / reproducing apparatus 1, image data reproduced by the disc drive 2 is input to the demultiplexer 10, the video decoder 11 and / or the on-screen display 12, the video output processor 13, and the monitor device 14.
[0047]
The demultiplexer 10 is supplied with a data stream in which image data and audio data are superimposed from the disk drive 2, and the demultiplexer 10 separates the data stream into a video data stream and an audio data stream, and video data The stream is supplied to the video decoder 11 and / or the on-screen display 12, and the audio data stream is supplied to the audio decoder 15 described later.
[0048]
The video decoder 11 performs decoding processing according to the MPEG system on the video data stream from the demultiplexer 10, thereby generating image data that has been subjected to decompression decoding processing, and supplies this to the video output processor 13.
[0049]
The on-screen display 12 has a small display screen having a horizontal × vertical length of, for example, 4 cm × 3 cm, and supplies image data from the demultiplexer 10 to the video output processor 13 and supports this image data. The image to be displayed is simply displayed.
[0050]
The video output processor 13 performs format conversion processing and digital / analog conversion processing on the image data from the video decoder 11 or the on-screen display 12, and supplies this to the monitor device 14. Thereby, the image reproduced | regenerated from the optical disk 2a can be displayed on the monitor apparatus 14. FIG.
[0051]
In the optical disc recording / reproducing apparatus 1, the data stream reproduced by the disc drive 2 is supplied to the demultiplexer 10, the audio decoder 15, the audio output processor 16, and the audio amplifier 17.
[0052]
The audio decoder 15 performs a decoding process on the audio data stream from the demultiplexer 10 according to a predetermined method, thereby decompressing and decoding the audio data, and supplying this to the audio output processor 16.
[0053]
The audio output processor 16 subjects the audio data from the audio decoder 15 to format conversion processing and digital / analog conversion processing, and supplies them to the audio amplifier 17. As a result, an acoustic output of audio data reproduced from the optical disc 2a via the audio amplifier 17 can be obtained.
[0054]
The optical disc recording / reproducing apparatus 1 has an operation input unit 18 including, for example, a plurality of switch groups, a rotary dial, a keyboard, a mouse, and the like. The operation input unit 18 generates an operation input signal corresponding to the user's operation and supplies it to the CPU 19. The CPU 19 generates control commands such as recording start, recording stop, playback start, playback stop, and the like corresponding to the operation input signal, and supplies them to the disk drive 2 via the command interface 20 as well as the above-described units 5. , 9, 11, 12, 15 and so on. Thereby, a predetermined data stream can be recorded / reproduced with respect to the optical disc 2a.
[0055]
In addition, the CPU 19 controls the disk drive 2 based on the operation input signal from the operation input unit 18 so that the data recorded on the optical disk 2a is edited. As will be described later, when the data stream recording process and data stream editing process are performed, the CPU 19 uses the memory 21 as a work area to perform reproduction control information, structure management information, etc. by performing the recording process or the editing process. Is supposed to generate.
[0056]
Next, as shown in FIG. 2A, the optical disc 2a is provided with a lead-in area 31, a volume space 32, and a lead-out area 33 from the inner circumference side toward the outer circumference side.
[0057]
In the volume space 32, as shown in FIG. 2 (b), a volume structure management information area 41 for storing information indicating the characteristics of the file recorded on the optical disc 2a from the inner circumference side toward the outer circumference side, an image A file area 42 for storing files, reproduction control information files, and the like, and a volume structure management information area 43 are provided.
[0058]
In the volume structure management information areas 41 and 43, initial information about the file area 42 that the CPU 19 has in the memory 21 in advance and information according to an instruction from the user are written. In the volume structure management information areas 41 and 43, information indicating the structure of the volume space 32, information for managing image files, reproduction control information files, and the like recorded in the volume space 32 are recorded.
[0059]
In the volume structure management information areas 41 and 43, for example, the characteristics of the file area 42, the start position and end position of the file area 42, the data size of the file area 42, the number of file areas 42, etc. are recorded as volume structure management information. .
[0060]
In the file area 42, as shown in FIG. 2 (c), reproduction control information in which structure management information for the root directory structure management information area 51 and reproduction control information file is stored from the inner circumference side toward the outer circumference side. A file structure management information area 52, a temporary reproduction control information file area 53 in which a reproduction control information file is stored, an image file structure management information area 54 in which structure management information about an image file is stored, and an image file are stored. An image file area 55 and an unused area 56 are provided.
[0061]
In the root directory structure management information area 51, information regarding the recording position, recording capacity, directory name, and subdirectory of the root directory is recorded as root directory structure management information.
[0062]
In the reproduction control information file structure management information area 52, structure management information indicating the recording position, recording capacity, and file name of each reproduction control information file is recorded.
[0063]
In the temporary reproduction control information file area 53, a reproduction control information file is recorded. As will be described later, the temporary reproduction control information file area 53 has its capacity set based on the amount of change in the capacity of the reproduction control information when the reproduction control information is updated by the CPU 19.
[0064]
Structure management information indicating the recording position, recording capacity, and file name of each image file is recorded in the image file structure management information area 54.
[0065]
In the image file area 55, an image file is recorded.
[0066]
In each of the structure management information areas 52 and 54, when each file is distributed in a plurality of fragments called extents and recorded at different recording positions, the recording position, the data amount, and the connection relationship between the extents are related to each extent. Information is also recorded.
[0067]
The image file stores a plurality of data streams in which audio and images are superimposed by the multiplexer 6 described above.
[0068]
The playback control information file stores playback control information necessary for playback of image files and editing processing. For example, image data contained in an image file can be segmented in arbitrary units according to user instructions and operations, and the playback control information file contains the recording position and size of each segmented scene when the scene is played back. Attribute information indicating validity or invalidity, and reproduction control information indicating the reproduction order of each scene are recorded.
[0069]
Next, a process for recording image data and / or audio data on the optical disk 2a and a process for reproducing an image file recorded on the optical disk 2a in the optical disk recording / reproducing apparatus 1 described above will be described.
[0070]
First, when the optical disk 2 a is inserted into the disk drive 2, information indicating that the optical disk 2 a has been inserted from the disk drive 2 is input to the CPU 19 via the command interface 20. In response to this, the CPU 19 outputs a control command requesting the setting of the physical format to the disk drive 2 via the command interface 20.
[0071]
As shown in FIG. 2A, the CPU 19 records lead-in information from the inner circumference side of the optical disk 2a to set a lead-in area 31, and sets a volume space 32 of a data size designated by the CPU 19 to an arbitrary value. A lead-out area 33 is set by filling in a value (for example, 0h) and recording lead-out information.
[0072]
Next, the CPU 19 sets the volume structure management information areas 41 and 43 on the innermost and outermost circumferences of the volume space 32 by performing logical format processing.
[0073]
Next, the CPU 19 sets the root directory structure management information area 51 by writing the root directory structure management information in the file area 42. When an operation input signal for setting an arbitrary subdirectory is input from the operation input unit 18, the CPU 19 records subdirectory structure management information having a user designation or a predetermined name. . Thereby, the CPU 19 ends the precondition process for starting recording of an image file or the like.
[0074]
Next, for example, when an image file is recorded in response to an operation input signal from the operation input unit 18, a process for recording the image file and a reproduction control information file for the image file according to the format shown in FIG. Migrate to
[0075]
Here, before recording the image file on the optical disc 2a, the CPU 19 writes the reproduction management information file structure management information with the file size of the reproduction control file set to “0”. Thus, the CPU 19 sets the reproduction management information file structure management information area 52 on the outer periphery side of the root directory structure management information area 51.
[0076]
Next, the CPU 19 determines the capacity of the temporary playback control information file area 53 by performing processing for determining the file size of the playback control information file when the user performs sufficient editing processing. That is, the CPU 19 calculates the amount of change in the file size of the reproduction control information file after the editing process. At this time, the CPU 19 determines the difference between the area size of the temporary playback control information file area 53 and the minimum file size of the playback control information file to be recorded in the temporary playback control information file area 53 in a later process as image data and / or ) The area size of the temporary reproduction control information file area 53 is determined to be smaller than the minimum recordable size of the audio data.
[0077]
Next, the CPU 19 creates a temporary reproduction control information file having the same size as the area size determined as described above in the memory 21 and outputs it to the disk drive 2. As a result, the CPU 19 sets the temporary reproduction control information file area 53 on the outer periphery side of the reproduction management information file structure management information area 52, and writes the temporary reproduction control information file to the optical disc 2a.
[0078]
Here, for example, a DVD video player apparatus is adapted to apply tracking servo by a differential phase detection method (DPD). When this DPD method is used, an area where no pit exists (mirror area) ) Cannot be used for tracking servo. When the apparatus is activated, the pickup of the disk drive 2 is located near the innermost circumference of the disk, and in order to read image information, it is necessary to move the pickup to the outer circumference of the disk by a seek operation. If the mirror area exists during the seek operation until the tracking servo is removed, the pickup is difficult to move to the outer periphery side of the disk from the mirror area.
[0079]
For this reason, in this embodiment, the CPU 19 forms the temporary reproduction control information file of, for example, all 0 data (null data) and writes the temporary reproduction control information file in the temporary reproduction control information file area 53 so that the mirror is formed on the disk. The area does not exist, and the pickup can be smoothly seek-controlled from the innermost periphery of the disc to the outer periphery of the disc.
[0080]
The temporary reproduction control information file to be written in the temporary reproduction control information file area 53 may be other data such as unique data in addition to the null data.
[0081]
Next, the CPU 19 overwrites the reproduction control information file structure management information area 52 which has been set to “0” in the previous process in response to the writing of the temporary reproduction control information file, thereby creating a structure for the reproduction control information file. Update management information.
[0082]
Next, the optical disc recording / reproducing apparatus 1 creates image file structure management information using the memory 21 as a work area, and provides an image file structure management information area 54 on the outer periphery side of the temporary reproduction control information file area 53. .
[0083]
Next, the CPU 19 outputs a start command to the video encoder 5, the audio encoder 9 and the multiplexer 6, the disk drive 2, etc., supplies the data stream from the multiplexer 6 to the disk drive 2, and issues a control command to the disk drive 2. Then, the recording / reproducing head in the disk drive 2 is driven to control the recording of the data stream on the optical disk 2a. As a result, the CPU 19 records the image file in the image file area 55.
[0084]
The CPU 19 outputs one image file to the disk drive 2 and records in order from the beginning of the continuous area in which this image file can be recorded, and also creates image file structure management information and updates it each time it is recorded. . Further, the CPU 19 records the image file with the outer peripheral side of the image file structure management information area 54 as the image file area 55.
[0085]
At this time, the recording operation is interrupted or resumed to the disk drive 2, encoder 5, 9 or multiplexer 6 each time an operation input signal such as recording interruption or recording restart is input from the operation input unit 18 to the CPU 19. The process of repeatedly recording instructions in order from the inner periphery side of the unused area is continued.
[0086]
Further, the CPU 19 determines that the scene has changed when the recording is interrupted, stores the scene change point as position information, creates reproduction control information based on the position information, and updates each time recording is performed.
[0087]
Further, the CPU 19 issues a control command for instructing the disk drive 2, the encoders 5, 9 and the multiplexer 6 to stop the recording operation in response to the input of the operation input signal indicating the reproduction stop instruction. The supply of the image file to the disk drive 2 is stopped. At this point, the CPU 19 recognizes the size of the entire image file, the start position and size of each extent, and updates the structure management information for the image file that has been created or updated.
[0088]
Further, the CPU 19 records the image file and updates the structure management information for the image file, creates reproduction control information in the memory 21, and overwrites the temporary reproduction control information file area 53 with the reproduction control information. As a result, as shown in FIG. Here, when the playback control information is updated and the size of the playback control information file to be updated is smaller than the size of the temporary playback control information file, the CPU 19 sets an area in which the playback control information file is not recorded in the second unrecorded area. The use area 62 is assumed.
[0089]
  As shown in FIG. 3, when information or a file is recorded on the optical disc 2a, when an image file is added again, the area size of the provisional reproduction control information file area 53 and the minimum size established as the reproduction control information file are determined. Since the difference is determined to be smaller than the minimum unit for recording the image data, the second unused area 62 is not regarded as an area for recording the image data, and the image data to be added is recorded first. It is recorded in the unused area 56 on the outer periphery side of the reproduction control information file. That is, the playback control information file area 61The image file is not recorded following this.
[0090]
  After this, playback control information file61On the other hand, when an operation input signal for performing an editing process such as increasing the number of scene break points or specifying a plurality of scene playback orders is input, the CPU 19 newly updates the playback control information in accordance with the operation input signal. Playback control information file61When it is determined that the file size has increased from before, the reproduction control information file 61 is overwritten from the beginning, and the increase is recorded in the second unused area 62.
[0091]
That is, the image file is additionally recorded on the optical disc 2a, and the first image file and the first reproduction control information of the first image file recorded before, the second image file and the second image file added to the optical disk 2a are recorded. When the second reproduction control information is recorded, each information is recorded in the file area 42 as shown in FIG. In the file area 42, the structure management information for root directory, the structure management information for reproduction control information file, the first reproduction control information file, the second reproduction control information file, and the structure management for image file are arranged from the inner periphery side of the optical disc 2a. The information, the first image file, and the second image file are arranged in this order.
[0092]
When reproducing the first image file and the second image file of the optical disc 2a recorded in this order, first, as shown in FIG. 4, the root directory structure management information is read (step S1) and reproduced. The recording position of the control information file structure management information area 52 is recognized, and the reproduction control information file structure management information area 52 is accessed.
[0093]
Next, the reproduction management information file structure management information is read (step S2), the start positions of the first reproduction control information file and the second reproduction control information file are recognized, and the reproduction control information file area 61 is accessed.
[0094]
Next, the first reproduction control information file is read (step S3), and the second reproduction control information file is read (step S4).
[0095]
Next, the image file structure management information is read (step S5), and the recording positions of the first image file and the second image file are recognized. Next, the first image file is read (step S6), and the second image file is read (step S7).
[0096]
Next, the CPU 19 controls the demultiplexer 10, the audio decoder 15, the audio output processor 16, and the audio amplifier 17 to output sound from the speaker mechanism, and also the demultiplexer 10, the video decoder 11, the on-screen display 12, and the video output. The processor 13 and the monitor device 14 are controlled to display an image.
[0097]
In such an optical disc recording / reproducing apparatus 1, since the change amount of the reproduction control file when the editing process is sufficiently performed is predicted and determined in advance, the provisional reproduction control information file area 53 is set before recording the image file. Can be set. Therefore, the temporary reproduction control information file area 53 can be provided subsequent to the reproduction management information file structure management information area 52, and the image file area 55 can be provided on the outer peripheral side of the temporary reproduction control information file area 53.
[0098]
Also, according to the optical disc recording / reproducing apparatus 1, when the recording / reproducing head is scanned from the inner circumference side during reproduction, the reproduction control information is first read to recognize the start position of the image file, and the recording / reproducing head is scanned to the outer circumference side. The image file can be read out. For this reason, according to the optical disc recording / reproducing apparatus 1, the number of seeks of the recording / reproducing head can be reduced and the seek distance can be shortened.
[0099]
Therefore, according to the optical disc recording / reproducing apparatus 1, since the image file can be read by efficiently scanning the recording / reproducing head, an operation input signal for reproducing an image is input from the operation input unit 18, for example. Time from when the image is displayed on the monitor device 14 can be shortened.
[0100]
In the above-described embodiment, the optical disk 2a on / from which information is recorded / reproduced by an optical action has been described as a recording medium for recording image data and / or audio data. Magneto-optical disk that records and reproduces using magnetic action, magnetic disk that records and reproduces only using magnetic action, and phase that records and reproduces using optical changes caused by changes in crystal structure Even a changeable disc and a recording medium capable of physically recording at high density can be applied.
[0101]
【The invention's effect】
The disc recording / reproducing apparatus according to the present invention can shorten the number of seeks and the seek distance of the recording / reproducing means, and can greatly shorten the time from disc insertion to image data reading.
[0102]
Further, by writing temporary reproduction control information in a predetermined information form in the temporary reproduction control information area on the disk-shaped recording medium, even when the actual reproduction control information is smaller in size than the temporary reproduction control information, the disk Since the space from the innermost recording position to the outermost recording position can be filled with information, only the tracking servo method using recording pits such as differential phase detection (DPD) can be used. Even in the case of reproduction by a DVD video player apparatus or the like equipped with a good tracking servo.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an optical disc recording / reproducing apparatus to which the present invention is applied.
FIGS. 2A and 2B are diagrams for explaining the data structure of an optical disc that is recorded and reproduced by an optical disc recording / reproducing apparatus to which the present invention is applied, wherein FIG. 2A shows the entire data structure of the optical disc, and FIG. (C) shows the data structure of the file area set before recording the image file on the optical disk.
FIG. 3 is a diagram for explaining a data structure of a file area after an image file is recorded by an optical disc recording / reproducing apparatus to which the present invention is applied.
FIG. 4 is a diagram for explaining a reading order of a recording / reproducing head when an image file is reproduced by an optical disc recording / reproducing apparatus to which the present invention is applied.
FIG. 5 is a diagram for explaining a data structure of an optical disc on which an image file is recorded by a second conventional method.
FIG. 6 is a diagram for explaining a reading order of a recording / reproducing head when an image file is reproduced by a conventional method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Optical disk recording / reproducing apparatus, 2 ... Disk drive, 2a ... Optical disk, 19 ... CPU, 53 ... Temporary reproduction control information file area, 55 ... Image file area, 61 ... Reproduction control information file area

Claims (2)

Instructing at least the image information and / or audio information, the reproducing order of the area start position information Ho及 beauty region for said image information and / or audio information respectively recorded and reproduced by dividing the area of an arbitrary size Recording / playback for recording / playing back playback control information that can be arbitrarily edited by the user, including playback order instruction information, and playback control information file structure management information indicating the file structure of the playback control information. Means,
The image information and / or audio information before recording with respect to the disc-shaped recording medium,
The playback control information file structure management information is recorded and the playback control information file structure management information area is set on the inner circumference side of the disc-shaped recording medium, and the outer circumference following the playback control information file structure management information area The temporary reproduction control information is recorded as an area for recording the reproduction control information on the side, and a temporary reproduction control information file area is set. On the other hand, the image information and / or the audio information is set more than the temporary reproduction control information file area after recording on the outer peripheral side, the disk recording and reproducing apparatus and a control means for controlling said recording and reproducing means so as to overwrite the reproduction control information on the temporary reproduction control information. The control means, sufficient as the data size of the reproduction control information after editing, the difference between the minimum size of the reproduction control information, the image information and / or the temporary data smaller size than the minimum recording unit of the audio information 2. The disc recording / reproducing apparatus according to claim 1, wherein the recording / reproducing means is controlled so as to form reproduction control information and record it on the disc-shaped recording medium.

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