JP4022739B2 - Optical disc device, optical disc recording method, optical disc recording method program, and recording medium recording optical disc recording method program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical disc apparatus, an optical disc recording method, an optical disc recording method program, and a recording medium on which an optical disc recording method program is recorded, and can be applied to, for example, a DVD (Digital Versatile Disk) device. The present invention makes effective use of the information recording surface by recording an extended file and extended file information as a set, and by allowing other sets of extended file information to be indicated by area management information. Thus, a file such as a still image other than a moving image can be recorded.
[0002]
[Prior art]
Conventionally, in a DVD that is a large-capacity optical disc, writable optical discs can be written only once, such as a DVD-R (DVD-Recordable), a recordable DVD-RW (DVD-Rewritanle), a DVD-RAM (DVD-RAM). Random Access Memory) is provided. Among these optical discs, DVD-R and DVD-RW discs can be played back on a read-only optical disc or computer by recording video data in a format compliant with the DVD-video format.
[0003]
FIG. 11 is a chart showing the logical format of the optical disc in the DVD video format. In the optical disc of this format, the information recording surface is divided into a lead-in (Lead in), a data zone (Data Zone), and a lead-out (Lead out) from the innermost side which is the head side (FIG. 11A), and data Desired video data or the like is recorded in the zone.
[0004]
Here, the data zone is divided from the lead-in side into a UDF (Universal Disk Format) area (file system area) A1, a VMG (Video Manager) area (DVD management information area) A2, and a real-time data recording area A3. The UDF area and the VMG area are management information recording areas for managing files based on video data recorded on the optical disc. Of these UDF area and VMG area, the VMG area, which is the second management information recording area, is an area corresponding to the file management system specific to the DVD video format, and the video data recorded in the real-time data recording area A3. Information of the TOC, which is management information for managing the whole, is recorded. On the other hand, the UDF area A1, which is the first management information recording area, is an area corresponding to a file management system by a computer, and is recorded in the real-time data recording area A3 in a format for compatibility with the file system in the computer. Management information for managing the entire video data is recorded.
[0005]
The real-time data recording area A3 is a program area for recording actual data, and video data is recorded in units of VTS (Video Title Set) (hereinafter referred to as titles as appropriate) (FIG. 11B). . Here, up to 99 VTSs can be provided. Here, the VTS is composed of VTSI (Video Title Set Information), VTSM VOBS (Video Object Set for the VTSM), VTSTT VOBS (Video Object Set for Titles in a VTS), and VTSI BUP (Backup of VTSI) from the head side. (FIG. 11C). In the VTSTT VOBS, video data in the format of MPEG (Moving Picture Experts Group) 2 which is actual data is recorded, and in the VTSI, recording position information which is management information for managing the video data based on the actual data is stored in the VTSM. In the VOBS, a title menu of video data is recorded. Note that VTSM VOBS is an option. The VTSI BUP is a backup of VTSI.
[0006]
Thus, in this type of optical disc, when accessing by a computer, a desired file can be searched and reproduced by UDF. When reproducing by a DVD player, a desired file is searched by VMG. It can be played back.
[0007]
As a method for writing video data onto such an optical disc, an incremental recording method (hereinafter referred to as an INC method) and a restricted over write method (hereinafter referred to as a ROW method) are used. Here, the INC system is a system for recording video data sequentially, and the ROW system is a system applied to an overwritable optical disc. However, even in the ROW method, when data is recorded in an unrecorded area, video data is recorded sequentially. In the INC system and the ROW system, processing to the optical disk such as reservation, which will be described later, is managed by an RMA (Recording Management Area) provided on the inner periphery side of the lead-in.
[0008]
FIG. 12 is a chart showing a recording procedure by the INC method. In the INC system, it is defined that up to three areas are written at a time. Each of these areas is called Rzone, and each Rzone is managed by RMA.
[0009]
When recording a moving image, in the INC method, Rzone is reserved first (FIG. 12A). Here, the Rzone reservation defines the UDF area, which is the management information recording area, and the Rzone1 area that forms the VMG area, and then the VTSI and VTSMVOBS of the first VTS in the unrecorded area that forms the real-time data recording area. This is executed by defining the Rzone2 area that forms the image and the remaining unrecorded area as the Invisible Rzone area. The INC system secures a recording area for management information by reserving Rzone1 and Rzone2, and secures an area for forming VTSI and VTSM VOBS of the first VTS.
[0010]
In the INC system, VTSTT VOBS with actual data is formed by sequentially recording video data from the beginning of the Invisible Rzone. Further, when the recording of actual data for one title is completed according to the user's instruction, the recording of the actual data is followed by the recording of the VTSI BUP (FIG. 12 (B)). VOBS is formed (FIG. 12C), and Rzone 2 is closed. Thereby, in the INC system, one VTS is recorded on the optical disc.
[0011]
When the next title is continuously recorded, in the INC system, Rzone 3 is reserved in the remaining unrecorded area, VTSI and VTSM VOBS areas are secured, and Invisible Rzone is defined (FIG. 12D). Subsequently, after VTSTT VOBS is formed by recording actual data, VTSI BUP is formed (FIG. 12E), and VTSI and VTSM VOBS are formed in the previously secured area (FIG. 12F). As a result, the subsequent VTS is recorded on the optical disc (FIG. 12G). In the INC method, when a title is continuously recorded, an unrecorded area is similarly defined and VTSs are sequentially recorded.
[0012]
On the other hand, in the INC system, a UDF area and a VMG area are formed by finalizing processing on an optical disc in which a VTS is sequentially recorded and a real-time data recording area is formed as described above, and lead-in and lead-out are further performed. (FIG. 12H), and thereby compatibility with a read-only optical disk is achieved. The UDF area and VMG area are formed by generating UDF and VMG data from the VTSI and VTSM VOBS data of each title, recording this data in Rzone 1 and closing Rzone 1.
[0013]
On the other hand, FIG. 13 is a chart showing a recording procedure by the ROW method. In the ROW method, lead-in, UDF, VMG, VTSI of the first title, and VTSM VOBS recording areas are secured in advance by padding (FIG. 13A). Here, the padding is a process for securing an area by recording dummy data such as NULL.
[0014]
If these areas are secured in this way, in the ROW system, VTSTT VOBS by actual data is formed by sequentially recording video data (FIG. 13B), and recording of actual data for one title is performed. When completed, VTSI BUP is subsequently recorded, and padding processing is executed to secure recording areas for VTSI and VTSM VOBS of the subsequent title (FIG. 13B). Subsequently, returning to the head side, VTSI and VTSMVOBS corresponding to the recording of the actual data are formed (FIG. 13C). Thus, in the ROW method, one VTS is recorded on the optical disc.
[0015]
When the next title is recorded continuously, in the ROW method, the VTSTT is recorded by recording actual data following the padding area formed by the immediately preceding VTS.
Form VOBS, VTSI BUP, followed by VTSI, VTSM
Padding processing is executed to secure a VOBS recording area (FIG. 13D). Subsequently, VTSI and VTSM VOBS are formed (FIG. 13E), and the subsequent VTS is recorded on the optical disc (FIG. 13F). In the ROW method, when a title is continuously recorded, processing such as padding is similarly performed to sequentially record VTSs.
[0016]
On the other hand, in the ROW method, a UDF area and a VMG area are formed by a finalization process similar to the INC method for an optical disc in which a VTS is sequentially recorded in this way and a real-time data recording area is formed. Lead-in and lead-out are formed (FIG. 13H), thereby achieving compatibility with a read-only optical disc.
[0017]
[Problems to be solved by the invention]
By the way, such an optical disk can be applied to a portable video recorder in place of a magnetic tape. In this case, since some conventional portable video recorders can record not only moving images but also still images, this type of optical disc can also record still images other than moving images. Is desired.
[0018]
Incidentally, in the above-mentioned format, no consideration is given to the recording of this type of file. As a result, a still image or the like can be stored in a memory and separately recorded on another recording medium. I need it.
[0019]
In recording such still images other than moving images, it is required to use the information recording surface as effectively as possible.
[0020]
The present invention has been made in view of the above points. An optical disc apparatus, an optical disc recording method, and an optical disc that can record a file such as a still image other than a moving image by effectively using an information recording surface. It is an object of the present invention to propose a recording medium on which a recording method program and an optical disk recording method program are recorded.
[0021]
[Means for Solving the Problems]
In order to solve such a problem, the invention of claim 1 is applied to an optical disc device, and records an extension file other than one or a plurality of moving image files and extension management information of the extension file as a set on the optical disc, In this extended management information, at least the extended file information necessary for reproducing the extended file related to the same set and the area management information indicating the recording position of the extended file information of the other set recorded so far are the same. Area management information indicating the recording position of the extended file information related to the set is assigned.
[0022]
According to the ninth aspect of the present invention, an extended file recording method is applied to an optical disk recording method, in which an extended file other than one or a plurality of moving image files and extended management information of the extended file are combined and recorded on the optical disk. The extended file recording step includes the extended management information, extended file information necessary for reproducing at least the extended file related to the same set, and other sets of extended file information recorded so far. Area management information indicating the recording position of the file and area management information indicating the recording position of the extended file information related to the same set are allocated and recorded.
[0023]
According to a thirteenth aspect of the present invention, an extended file is applied to an optical disk recording method program and is recorded on an optical disk by combining an extended file other than one or a plurality of moving image files and extended management information of the extended file. The extended file recording step includes, in the extended management information, at least extended file information necessary for reproduction of the extended file related to the same set, and other sets of extensions recorded so far. Area management information indicating the recording position of the file information and area management information indicating the recording position of the extended file information relating to the same set are allocated and recorded.
[0024]
According to a sixteenth aspect of the present invention, the program of the optical disc recording method is applied to a recording medium on which an optical disc recording method program is recorded. The optical disc recording method program includes an extension file other than one or a plurality of moving image files and an extension of the extension file. And an extended file recording step for recording on the optical disc as a set with management information. The extended file recording step includes extended file information necessary for reproducing extended files related to at least the same set. The area management information indicating the recording position of the other set of extended file information recorded so far and the area management information indicating the recording position of the extended file information related to the same set are allocated and recorded.
[0025]
According to the configuration of the first aspect, the present invention is applied to an optical disc apparatus, and an extension file other than one or a plurality of moving image files and extension management information of this extension file are paired and recorded on the optical disc. , Extended file information necessary for reproduction of at least the extended file related to the same set, area management information indicating the recording position of the extended file information of another set recorded so far, and the extended file related to the same set By assigning area management information indicating the recording position of information, each extended file is recorded as a pair with the corresponding extended file information, and is reproduced by the area management information assigned to the other extended management information. Can do. As a result, even if the extended file information is not recorded all at once, the extended file information can be recorded in a distributed manner, and the extended file can be reproduced using the extended file information. This makes it possible to record a file such as a still image other than a moving image by effectively using the information recording surface.
[0026]
Thus, according to the configurations of claims 9, 13, and 16, an optical disc recording method and an optical disc capable of recording files such as still images other than moving images by effectively using the information recording surface And a recording medium on which the program for the optical disc recording method is recorded.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
[0028]
(1) First embodiment
(1-1) Configuration of the first embodiment
FIG. 2 is a block diagram showing the optical disc apparatus according to the first embodiment of the present invention. The optical disk apparatus 1 is a portable video recorder, and can record an imaging result on an optical disk 2 that is a DVD.
[0029]
That is, in the optical disc apparatus 1, the video input unit 3 performs analog-digital conversion processing on a video signal that is an imaging result obtained by an imaging unit (not shown) and a video signal input from an external device, and outputs video data. Here, the built-in image pickup means outputs the image pickup result based on the moving image and the image pickup result based on the still image under the control of the microcomputer 4, whereby the image input means 3 controls the image pickup means by the microcomputer 4. In response to this, video data based on moving images and still images is selectively output.
[0030]
The audio input unit 5 performs analog-digital conversion processing on the audio signal acquired by the microphone and the audio signal from the external input, and outputs audio data.
[0031]
The compression / decompression processing unit 6 switches the operation under the control of the microcomputer 4 and processes data used for recording and reproduction. That is, the compression / decompression processing unit 6 uses a random access memory (RAM) 9 to record the video data and audio data when the video data and audio data input from the video input unit 3 and the audio input unit 5 are recorded. The data is compressed and multiplexed, and output to the header information processing unit 7. On the contrary, at the time of reproduction, similarly, the random access memory 9 is used to separate the data obtained from the header information processing unit 7 into video data and audio data, and then the data is decompressed and output.
[0032]
That is, in the compression / decompression processing unit 6, the video processing unit 8 compresses and outputs video data output from the video input unit 3 during recording under the control of the microcomputer 4. At this time, when the video data is video data based on a moving image, the data is compressed according to the MPEG2 format, whereas when the video data is video data based on a still image, the data is compressed according to a JPEG (Joint Photographic Coding Experts Group) format. . The video processing unit 8 also decompresses and outputs the video data output from the multiplexing processing unit 10 in accordance with the data compression format of the video data during reproduction.
[0033]
During recording, the audio processing unit 11 compresses and outputs the audio data output from the audio input unit 5 in a format such as MPEG, Dolby Audio, or linear PCM. On the contrary, during reproduction, the audio data obtained from the multiplexing processing unit 10 is decompressed and output.
[0034]
The multiplexing processing unit 10 time division multiplexes the video data output from the video processing unit 8 and the audio data output from the audio processing unit 11 during recording, and outputs the result to the header information processing unit 7. On the contrary, at the time of reproduction, video data and audio data are separated from the time division multiplexed data output from the header information processing unit 7 and output to the video processing unit 8 and the audio processing unit 11, respectively.
[0035]
The monitor unit 12 includes video data input from the video input unit 3, audio data input from the audio input unit 5, or video data output from the compression / decompression processing unit 6, a display mechanism for monitoring the audio data, audio The optical disc apparatus 1 is configured by a processing mechanism so that an imaging result can be monitored and a reproduction result can be monitored.
[0036]
The video / audio encoder 13 compresses the video data and audio data input from the audio input unit 5 or the video data and audio data output from the compression / decompression processing unit 6 according to a predetermined format and outputs the compressed data to an external device. . As a result, the optical disc apparatus 1 can monitor the imaging result and the reproduction result with an external device.
[0037]
The header information processing unit 7 receives time-division multiplexed data output from the compression / decompression processing unit 6 at the time of recording, and controls header information unique to the DVD, extended file header information, which will be described later, and the like under the control of the microcomputer 4. Append and output. Also, data such as UDF, VMG, VTSI, etc. is generated from information from the microcomputer 4 and output to the DVD signal processing unit 14. At the time of reproduction or the like, the header information added at the time of recording is separated from the output data of the DVD signal processing unit 14 and output to the compression / decompression processing unit 6. The separated header information is notified to the microcomputer 4. The extended file is a file that is not defined in the DVD video format, which is a standardized format for the optical disc 2, and in this embodiment, a still image file is applied to the extended file. Has been made.
[0038]
At the time of recording, the DVD signal processing unit 14 generates an error correction code from the output data of the header information processing unit 7 using the random access memory 15, and adds the error correction code to the output data. Further, processing such as scramble processing and 8/16 modulation is executed, and a data string based on the processing result is output to the analog front end unit 16 as a serial data string.
[0039]
On the other hand, at the time of reproduction, the DVD signal processing unit 14 performs decoding processing, descrambling processing, error correction processing on the output data of the analog front end unit 16 contrary to the recording time, and the processing result is sent to the header information processing unit 7. Output to. Further, the DVD signal processing unit 14 performs digital / analog conversion processing on various kinds of drive information output from the microcomputer 4 for spindle control, tracking control, focus control, and thread control, and generates these drive signals. The signal is output to the motor amplifier unit 18.
[0040]
The analog front end unit 16 generates and outputs a light amount control signal for the laser beam irradiated to the optical disc 2 from the optical head 19. The analog front end unit 16 holds the light amount of the laser beam irradiated from the optical head 19 to the optical disc 2 by the light amount control signal at the time of reproduction at a constant light amount for reproduction, whereas the analog front end unit 16 from the DVD signal processing unit 14 at the time of recording. In response to the output data, the signal level of the light quantity control signal is changed, whereby the light quantity of the laser beam is intermittently raised from the light quantity during reproduction to the recording light quantity in accordance with the output data from the DVD signal processing unit 14. increase.
[0041]
Further, the analog front end unit 16 generates a reproduction signal whose signal level changes in accordance with the pit row formed on the optical disc 2 by amplifying and calculating the reception result of the return light obtained from the optical head 19. Then, the reproduction data which is the binary identification result of the reproduction signal is output to the DVD signal processing unit 14 by the signal processing of the reproduction signal. In addition, this calculation process generates a tracking error signal, a focus error signal, and the like whose signal levels change according to the tracking error amount and the focus error amount, and outputs these signals to the microcomputer 4 as digital signals.
[0042]
The motor amplifier unit 18 drives corresponding mechanisms by various drive signals output from the DVD signal processing unit 14. That is, the motor amplifier unit 18 rotationally drives the spindle motor 20 and the thread motor 21 by using a drive signal for spindle control and a drive signal for thread control among these drive signals. The actuator mounted on the optical head 19 is driven by a tracking control driving signal and a focus control driving signal.
[0043]
The spindle motor 20 chucks the optical disc 2 and rotationally drives it at a predetermined rotational speed. The thread motor 21 moves the optical head 19 in the radial direction of the optical disc 2.
[0044]
The optical head 19 emits a laser beam from a built-in semiconductor laser in response to a light amount control signal output from the analog front end unit 16, and condenses the laser beam on the information recording surface of the optical disc 2 through an objective lens. Further, the return light obtained from the optical disk 2 by the irradiation of the laser beam is guided to a predetermined light receiving element through the objective lens, and the light reception result of the light receiving element is output to the analog front end unit 16. The optical head 19 is configured such that the objective lens is movable by an actuator driven by a tracking control drive signal and a focus control drive signal, thereby enabling tracking control and focus control. Further, the light quantity of the laser beam is intermittently raised by a light quantity control signal, whereby the temperature of the information recording surface of the optical disc 2 is locally increased to record desired data.
[0045]
The microcomputer 4 is a computer that controls the operation of the entire optical disc apparatus 1, and further by a user operation obtained through an operation unit (not shown) by executing a processing program installed in advance in the optical disc apparatus 1. Controls the operation of each unit according to various signals detected by the analog front end unit 16. That is, the microcomputer 4 generates drive information for tracking control and focus control from the tracking error signal and the focus error signal detected by the analog front end unit 16 and converts them into analog signals by the DVD signal processing unit 14 to convert them into motor signals. This is output to the amplifier unit 18, thereby executing tracking control and focus control processing. Further, the laser beam irradiation position is detected based on the header information detected by the header information processing unit 7, and the drive information for thread control is generated from the detection result and output to the DVD signal processing unit 14, thereby the seek or the like. Execute the process. Similarly, spindle control processing is executed.
[0046]
On the premise of processing related to these optical disks 2, the microcomputer 4 accesses the inner peripheral side area of the optical disk 2 when the optical disk 2 is loaded or when the power is turned on with the optical disk 2 loaded. When the optical disc 2 is a reproduction-only optical disc or is an optical disc 2 that has been finalized, the VMG is reproduced to obtain data necessary for reproducing the file recorded on the optical disc 2. . Further, the entire operation is controlled so as to reproduce a file desired by the user in accordance with the acquired data.
[0047]
On the other hand, when the optical disc 2 is a DVD-R or DVD-RW that has not yet been finalized, the entire operation is controlled in response to a user operation, and moving image and still image data are recorded. A file and a still image file are recorded on the optical disc 2. Also, the moving image file and the still image file recorded on the optical disc 2 are reproduced, the reproduction result is displayed on the monitor unit 12, and further output to an external device. In addition, regarding the optical disc 2 on which such a moving image file and still image file are recorded, the optical disc 2 subjected to finalization processing is replaced with the recording of the optical disc 2 in accordance with the UDF recording instead of or in addition to the VMG recording. Play the file recorded in.
[0048]
In these processes, when the optical disk 2 is a DVD-R optical disk and is a virgin disk on which no file or the like is recorded, the microcomputer 4 sequentially transfers the moving image file and the extension file to the optical disk 2 according to the procedure shown in FIG. Record. That is, the microcomputer 4 reserves the Rzone 1 by updating the RMA information acquired from the optical disc 2 and held in the memory (FIG. 3A).
[0049]
In the case of recording a moving image, similarly, Rzone2 and Invisible Rzone are reserved by updating RMA information (FIG. 3A), and video data as actual data is sequentially recorded in Invisible Rzone and VTSTT. Create a VOBS. When the user gives an instruction to stop recording, management information is generated based on the address information of the recording start position of VTSTT VOBS, file size, recording date and time, etc., and this management information is recorded to generate a VTSI BUP (FIG. 3). (B)) and VTSI and VTSM VOBS are generated to generate one VTS (FIG. 3C). Also, management information is held in the memory and the RMA information held in the memory is updated so as to correspond to the VTS generated in this way.
[0050]
Subsequently, when recording a moving image, the microcomputer 4 similarly updates the information of the RMA held in the memory, reserves Rzone2 and Invisible Rzone, then records the actual data in the Invisible Rzone sequentially, and records VTSTT VOBS and VTSI BUP. In addition, VTSI and VTSM VOBS are generated, management information is recorded in the memory so as to correspond to these, and RMA information held in the memory is updated.
[0051]
As a result, when the moving image is recorded by the INC method, the microcomputer 4 combines the moving image file and VTSI which is management information of the moving image file necessary for reproducing the moving image file, as in the case of the conventional INC method. The titles are recorded sequentially. In addition, when an optical disc 2 that has not yet been finalized is loaded and additional recording is performed on the optical disc 2, similar processing is executed, thereby adding a moving image that is an imaging result.
[0052]
In these processes, the microcomputer 4 appropriately updates the RMA data held in the memory, and additionally writes the RMA data held in the memory to the optical disc 2 when the optical disc 2 is ejected or the power is turned off. As a result, the RMA of the optical disc 2 is rewritten. As a result, the optical disk apparatus 1 can access the optical disk 2 before finalization based on the RMA recording even after the memory recording is lost.
[0053]
On the other hand, in the finalizing process, UDF and VMG are recorded in Rzone 1 based on the management information generated and stored in the memory in this way, and lead-in and lead-out are generated. Needless to say, when data is added to the optical disc 2 that has not been finalized, UDF and VMG data for these titles are generated by VTSI and VTSM VOBS of the titles already recorded on the optical disc 2.
[0054]
As a result, in the optical disc apparatus 1, the moving image file is recorded in the DVD video format by the process according to the INC method similar to the conventional method.
[0055]
On the other hand, when recording a still image, an invisible Rzone is reserved first by updating the RMA stored in the memory, and a still image file (EF in FIG. 3) that is an extended file is sequentially recorded (FIG. 3). 3 (E)). Also, corresponding to the recording of the still image file EF, extended management information, which is management information for temporarily managing still images, is sequentially created and held in the built-in memory until finalization.
[0056]
Further, when the user instructs to end the recording of the still image file by recording the desired number of still image files, the RMA stored in the memory is updated, the Invisible Rzone is closed, and the Rzone 3 is stored in the area following the still image file. Is reserved (FIG. 3F). Also, the extended management information held in the memory is converted into a format for recording on the optical disc 2, and this extended management information DK is recorded in Rzone 3 (FIG. 3G). Here, the extended management information DK is management information necessary for reproducing the extended file, and details will be described later.
[0057]
Thereby, the microcomputer 4 records the extended file on the optical disc 2 as a set of one or a plurality of extended files and the extended management information of these extended files. At this time, when the file to be recorded on the optical disc 2 is a moving image file, the management information, the file, and the backup information for the management information are recorded so as to be successively arranged. In the case of recording in 2, the extended file and the extended management information are sequentially recorded, whereby the recording format of the management information is switched according to the attribute of the file.
[0058]
As a result, the optical disc apparatus 1 records a file of a still image that is not defined by the DVD video format together with a file of a moving image in the DVD video format together with management information.
[0059]
When the microcomputer 4 records the extended management information DK in this manner, the microcomputer 4 records and holds the extended management information DK in the built-in memory. Also, when recording the extended management information DK in this way and then recording the file as a still image again, the microcomputer 4 records the extended file in the same manner, and then, according to the user's termination instruction, Record.
[0060]
On the other hand, when recording a moving image subsequently, Rzone and Invisible Rzone are reserved (FIG. 3 (H)), and VTSTT VOBS, VTSI BUP, VTSI, and VTSM VOBS are generated (FIG. 3 (I)). Thus, a VTS is generated following the extended management information DK (FIG. 3J).
[0061]
When the user instructs finalization of the optical disc 2, the microcomputer 4 obtains UDF data from the management information (VTSI, VTSTT VOBS) of all titles thus created and the extended management information of all extension files. It is created and recorded on the optical disc 2 (FIG. 3 (K)). Further, VMG data is generated only from management information (VTSI, VTSTT VOBS) of all titles and recorded on the optical disc 2. The UDF and VMG data is generated from the extended management information stored in the memory. Further, when the UDF and VMG are recorded in this way, the microcomputer 4 creates lead-in and lead-out. Note that the microcomputer 4 executes UDF and VMG recording, lead-in and lead-out creation, and extended management information DK recording by outputting the corresponding data to the DVD signal processing unit 14.
[0062]
As a result, in this embodiment, management information is recorded so that UDF, which is management information for computers, can be recognized and played back even for extended files, whereas VMG, which is management information for DVD playback, is recorded. No information about the extended file is recorded.
[0063]
On the other hand, FIG. 4 is a chart showing a series of recording procedures when the optical disc 2 is a DVD-RW, in comparison with FIG. The microcomputer 4 updates the RMA information acquired from the optical disc 2 and stored in the memory, thereby executing the padding process and securing the UDF and VMG areas. When the user instructs to record a moving image file, the VTSI and VTSM VOBS areas of the subsequent title are secured by the padding process (FIG. 4A). Also, RMA data held in the memory is updated by these processes.
[0064]
When the user instructs the start of recording, the actual data from the moving image file data is sequentially recorded to generate VTSTT VOBS, and then management information is generated based on the address information of the recording start position, the file size, the recording date and time, etc. The management information is recorded to generate a VTSI BUP. Further, for the subsequent title recording, VTSI and VTSM VOBS areas are secured by padding (FIG. 4B). Further, management information is sequentially recorded from a position returned by a predetermined area from the recording start position of the VTSTT VOBS, thereby forming VTSI and VTSM VOBS, thereby completing the recording of one title (FIG. 4C). ). In these processes, the microcomputer 4 records and holds the management information of the title in the memory.
[0065]
Thus, when recording a moving image subsequently, the microcomputer 4 controls the operation of each part in the same manner, and when recording a moving image file, the moving image file and the reproduction of the moving image file are reproduced by the same ROW method as before. A moving image file is sequentially recorded in combination with VTSI which is necessary management information.
[0066]
In these processes, the microcomputer 4 appropriately updates the RMA data held in the memory, and rewrites the RMA of the optical disk 2 with the RMA data held in the memory when the optical disk 2 is ejected or when the power is turned off. . As a result, the optical disk apparatus 1 can access the optical disk 2 before finalization based on the RMA recording even after the memory recording is lost.
[0067]
On the other hand, in the finalizing process, UDF and VMG are generated based on the management information generated and stored in the memory in this way, and lead-in and lead-out are generated.
[0068]
As a result, the optical disk apparatus 1 records the moving image file by the same processing by the ROW method as before.
[0069]
On the other hand, when the user instructs recording of a still image, the microcomputer 4 sets the recording start position of actual data at the head position of the area secured by padding. The microcomputer 4 sequentially records the still image file EF, which is an extended file, in response to a recording start instruction from the user (FIG. 4D). Also, corresponding to the recording of the still image file EF, extended management information, which is management information for temporarily managing still images, is sequentially created and held in the built-in memory until finalization.
[0070]
Further, when the user instructs the end of the recording of the still image file by recording the desired number of still image files, the extended management information stored in the memory is converted into a format for recording on the optical disc 2, and this extended management is performed. Information DK is recorded, and VTSI and VTSM VOBS areas are secured by padding for subsequent title recording (FIG. 4D). Thereby, the microcomputer 4 is configured to record one or a plurality of extension files and the extension management information of these extension files as a set on the optical disc 2 in this case as well. Video files are recorded in the order of management information, video files, and management information backup information, while extended files are recorded in the order of extended files and extended management information, and more files can be recorded. By recording the extended management information together, the recording format is switched according to the file attributes.
[0071]
In this way, when recording a moving image file, the microcomputer 4 records the VTSTT VOBS and VTSI BUP with the actual data following the area secured by padding, and then secures the area continued by padding. Returning to VTSI and VTSM VOBS, one title is recorded (FIGS. 4E to 4G). In the case of recording a still image file, similarly, after returning to the top of the padding, sequentially recording and recording management information, an area is secured by padding. Further, UDF, VMG, lead-in, and lead-out are created based on such management information in accordance with a finalize instruction from the user (FIG. 4 (H)).
[0072]
FIG. 1 is a chart for explaining the extension management information DK in recording such a moving image file and extension file. In the following description, the extension file EF and the extension management information DK are appropriately indicated by numerals indicating the recording order. In the recording of the optical disk 2 described above with reference to FIGS. 3 and 4, the microcomputer 4 manages the extended management information DK and the like by managing the information recording surface based on the NWA (Next Writable Address) provided in the RMA of the optical disk 2. to manage. Here, NWA indicates the start address of an unrecorded area on the optical disk 2. When the optical disk 2 is loaded, the microcomputer 4 reproduces the NWA from the optical disk 2 and holds it in the memory, and stores various data on the optical disk 2. The NWA held in the memory is updated corresponding to the recording. When the optical disk 2 is ejected or the power is turned off, the NWA recorded on the optical disk 2 is rewritten by the NWA held in the memory in this way. Thereby, the microcomputer 4 can confirm the head address of the unrecorded area by this NWA even when the optical disk is transferred to another optical disk device in the middle of processing.
[0073]
In the microcomputer 4, every time the VTS and the extended management information DK are recorded, the temporary VMG (TV) is recorded, and the NWA in which the leading address of the area following the temporary VMG (TV) is stored in the memory. Set to. Here, the temporary VMG (TV) is management information for managing the VTS recorded on the optical disc 2 in place of the VMG created by finalization until the finalization, and the management information of each VTS recorded on the optical disc 2 The head address of VTSI is recorded in a table format. As a result, on the optical disc 2, the temporary VMG (TV) is reproduced by reproducing the area immediately before the unrecorded area designated by the NWA, and the VTSI of each VTS recorded in the temporary VMG (TV) is reproduced. And various information necessary for reproducing the moving image file recorded on the optical disc 2 can be acquired. In FIG. 1, the relationship indicated by such an address is indicated by an arrow.
[0074]
In this embodiment, a flag indicating that the temporary VMG (TV) is a table corresponding to the extended management information is set in one of the tables of the temporary VMG (TV), and the latest recorded on the optical disc 2 until then. The address indicating the head recording position of the extended management information DK is recorded. As a result, the optical disc 2 can reproduce the extension management information DK necessary for reproducing the extension file EF together with the information necessary for reproducing the moving image file.
[0075]
In FIG. 1A, first, VTS # 1 is recorded by a moving image file, and then temporary VMG (TV) is recorded, and a plurality of extended files EF1, corresponding extended management information DK1, and temporary VMG are recorded. (T.V) is recorded. In this case, the temporary VMG (T.V) recorded at the end is indicated by the NWA, and the VVM and the extended management information are respectively indicated by the temporary VMG (T.V). The recording position of DK1 is shown. FIG. 1B shows a case where a moving image file (VTS # 2) is further recorded. In this case, the last provisional VMG (T.V) recorded following this moving image file is indicated by NWA. The temporary VMG (TV) indicates the recording position of the first VTS # 1, the extended management information DK1, and the last VTS # 2.
[0076]
In the extended management information DK1 in which the recording position is indicated together with the VTS by the temporary VMG (T.V) in this way, the extended file information EX, the management information CI, and the extended file guide information are sequentially provided after the extended file EF1. T.A. E is recorded and formed. Here, the extended file guide information T.P. E is information for managing the entire area in which the extended file EF is recorded, and the address of the head recording position is recorded in the above-described temporary VMG (TV), whereby the extended management information DK1 Is the extension file guide information T.F. from the address obtained by reproducing the temporary VMG (T.V). E can be reproduced. 5 and 6, the first number of each item is a byte from the beginning, and the subsequent number is the number of bytes assigned to each item.
[0077]
Extended file guidance information As shown in FIG. 5A, E is formed by continuously recording a temporary information management table (TMP EXTI MAT) and a category information search pointer table (CAT INFO SRPT). Here, the temporary information management table (TMP EXTI MAT) is a table in which the number of categories of the following category information search pointer table (CAT INFO SRPT) is recorded, and the category information search pointer table (CAT INFO). SRPT) is a table for managing an extended file for each attribute.
[0078]
As shown in FIG. 5B, the temporary information management table (TMP EXTI MAT) has an identification code indicating that it is a temporary information management table in the first 12 bytes according to ISO / IEC646: 1983 (a-character). Assigned. Further, the version number of the corresponding temporary VMG (TV) is recorded in the subsequent 3 bytes, and the subsequent 1 byte is allocated for reservation. The extension file guide information T.F. The data size of E is assigned, the type record is assigned to the subsequent 1 byte, and the number of the subsequent category information search pointer table (CAT INFO SRPT) is recorded in the subsequent 1 byte. Here, the number of category information search pointer tables is 1 to 255. The subsequent 13 bytes are allocated for reservation.
[0079]
As a result, the extended file guide information T.P. E detects the temporary information management table (TMP EXTI MAT) on the basis of the temporary VMG (TV), and determines the number of tables registered in the subsequent category information search pointer table (CAT INFO SRPT). It can be detected.
[0080]
The category information search pointer table (CAT INFO SRPT) is formed for each attribute of the extended file as shown in FIG. In the category information search pointer table (CAT INFO SRPT), the first 8 bytes are assigned to information indicating the type of extended file, and the subsequent 3 bytes are a flag indicating the creation format of the corresponding management information CI. The address information of the recording start position is assigned. Further, the subsequent 1 byte is assigned to the reserve, and the time stamp of the recording date is assigned to the subsequent 12 bytes.
[0081]
As a result, the optical disc 2 sequentially follows the temporary VMG (TV) and records the first 11 bytes of the category information search pointer table (CAT INFO SRPT), thereby corresponding to the format of the corresponding extended file. The recording format of the management information CI and the extended file information EX can be confirmed, and various extended files that can be recorded can be set in various ways by simply extending the extended management information DK as necessary. Yes. Since the free format can be defined in this way, the category information search pointer table (CAT INFO SRPT) can describe the format setter (Vender) in the last 8 bytes. ing.
[0082]
FIG. 6 is a chart showing management information CI and extended file information EX. Here, the management information CI is recorded with identification information indicating the category of the file managed by the subsequent extended file information EX, directory information, and the like, so that compatibility with the file management system in the computer can be maintained. Has been made. On the other hand, the extended file information EX is individual management information of the extended file, and is formed by the file name of the corresponding extended file, the address of the recording start position, and the like.
[0083]
As shown in FIG. 6A, the management information CI is formed by a structure corresponding to the type name assigned to the first 8 bytes of each category information search pointer table (CAT INFO SRPT). FIG. 6A shows management information CI having a basic structure, and an identification code indicating that it is management information of an extended file is described in ISO / IEC646: 1983 (a-character) in the first 12 bytes. In the subsequent 8 bytes, information on the model name assigned to the first 8 bytes of the corresponding category information search pointer table (CAT INFO SRPT) is recorded. Further, the directory name of the extended file managed by this management information CI is recorded in the subsequent 8 bytes, and the subsequent 4 bytes are allocated for reservation.
[0084]
Further, information of update date / time and recording date / time is assigned to the subsequent 10 bytes, and the number of the extension files managed by the management information CI is recorded in the subsequent 2 bytes. In the subsequent 1 byte, the number of areas in which the extended file information EX managed by this management information CI is recorded is recorded, and the subsequent 19 bytes and 64 bytes are allocated for reservation. Subsequently, area management information is recorded in units of 8 bytes.
[0085]
Here, as shown in FIG. 6B, the area management information is provided by the number of areas in which the extended file information EX managed by the management information CI is recorded. In each area management information, address information M Area FEXF Addr indicating the start recording position of the area in which the corresponding extended file information EX is recorded is assigned to the first 4 bytes, and the corresponding extended file information EX is assigned to the subsequent 2 bytes. The remaining 2 bytes are allocated for the reserve.
[0086]
As shown in FIGS. 6C and 6D, the extension file information EX is assigned information necessary for reproducing the corresponding extension file. That is, in the extended file information EX, the first 12 bytes are assigned to an identification code or the like indicating that the extended file information EX, and the subsequent 3 bytes are assigned to extension information. The subsequent 1 byte is assigned to the reserve, and the subsequent 8 bytes are assigned to the file name. The subsequent 4 bytes are allocated to an address indicating the recording start position of the corresponding extended file, and the subsequent 4 bytes are allocated to file size information of the extended file. The next 4 bytes are allocated to reserve, the next 12 bytes are allocated to the time stamp CR TM indicating the recording date and time of the extended file, the subsequent 10 bytes are information indicating the latest update date and time, and the last 8 bytes are reserved. It is made to be assigned.
[0087]
As a result, in the optical disc apparatus 1, the extended file guide information T.V. is based on the temporary VMG (T.V). E, the management information CI, and the extension file information EX are sequentially traced so that the extension file recorded on the optical disc 2 can be notified to the user by the directory structure, and is necessary for constructing a file management system for a personal computer. Various types of information are included in the guide information T.D. E, management information CI, and extended file information EX.
[0088]
Since the area management information is defined in the extended management information in this way, in this embodiment, when the extended file EF2 is recorded further than the state shown in FIG. As shown, in the newly recorded extension management information DK2 of the extension file EF2, the extension file information EX is recorded only for the newly recorded extension file EF2, and the newly recorded extension file information EX and so far The extended file information EX recorded in the extended management information DK1 can manage the extended files EF1 and EF2, respectively. That is, in this case, two pieces of area management information are allocated to the management information CI, and each area management information has its head address of the newly recorded extended file information group and the extended file information recorded in the extended management information DK1 so far. By recording the head address of the group, the extended files EF1 and EF2 recorded on the optical disc 2 can be managed by the extended file information EX recorded in a distributed manner. In FIG. 1 and FIG. 7, the extended file information group is indicated by the same reference numerals as the extended file information.
[0089]
Further, since the management information CI can be set for each file attribute, as shown in FIG. 1D, for example, when the extension file EF3 by MPEG4 and the extension management information DK3 are recorded, the extension file by the still image file is recorded. A category information search pointer table (CAT INFO SRPT) related to EF1 and EF2 and a category information search pointer table (CAT INFO SRPT) related to the extension file EF3 are set, and corresponding management information is set. In addition to setting the CI, the corresponding management information CI is set so that the extension file information EX of the extension files EF1 and EF2 and the extension file information EX of the extension file EF3 are respectively indicated. Distributed on optical disc 2 The extension files EF1, EF2, and EF3 can be managed by the extension file information EX recorded as described above.
[0090]
On the contrary, when the extension file EF2 is recorded after the extension file EF1, as shown in FIGS. 7A to 7D by comparing FIGS. In the extended management information DK2 of the file EF2, the extended file information EX previously recorded in the extended management information DK1 and the newly recorded extended file information EX of the extended file EF2 are recorded together. By setting the area management information of the management information CI so as to indicate only the recorded extended file information group, all the extended files EF1 and EF2 recorded on the optical disc 2 are managed together with one extended management information DK2. It is made to be able to. As shown in FIG. 7D, when extended files having different attributes are recorded, they are managed in a concentrated manner for each extended file of each attribute.
[0091]
In the recording of the extended management information DK, when the extended files EF are managed together, all the extended files recorded on the optical disc 2 can be played back by playing back only one corresponding extended management information. , You can play the desired file in a short time. However, in the case of this method, every time the extended management information is recorded, the extended file information that has been recorded on the optical disc 2 is recorded together. For this reason, in this embodiment, the microcomputer 4 records the extended management information by the distributed management by the setting of the area management information described above, thereby efficiently using the information recording surface.
[0092]
That is, in the microcomputer 4, when the optical disk 2 is loaded or when the power is turned on with the optical disk 2 loaded, the temporary VMG, the extended management information, and the management information are sequentially reproduced on the basis of the NWA. Hold on. Further, the management information and the extended management information held in the memory are updated according to the recording of the moving image file and the extended file, and the management information and the extended management information are recorded on the optical disc 2. In updating the extended management information, the microcomputer 4 instructs each of the head addresses of the extended file information group recorded on the optical disc 2 until then, and the head of the extended file information group related to the newly recorded extended file. The area management information is set and the extended management information is updated so as to indicate the address.
[0093]
Further, a UDF is formed from the management information and the extended management information held in the memory in this way, and a VMG is formed from the management information, and finalization processing is executed.
[0094]
FIG. 8 is a flowchart showing a series of processing of the optical disc 2 by such a microcomputer 4. When the power is turned on, the microcomputer 4 proceeds from step SP1 to step SP2, and determines the presence or absence of the optical disk 2 from the detection result of the optical disk 2 detection mechanism (not shown). If a negative result is obtained here, the microcomputer 4 repeats step SP2. On the other hand, when the power source is turned on with the optical disc 2 loaded, and when the optical disc 2 is loaded after the power source is turned on, an affirmative result is obtained in step SP2. To step SP3. When the power is turned off in the repetition of step SP2, the microcomputer 4 directly moves to step SP4 and ends this processing procedure.
[0095]
In step SP3, the microcomputer 4 drives the sled motor 21 to move the optical head 19 to the innermost circumference of the optical disc 2, and obtains the reproduction result on the innermost circumference side from the DVD signal processing unit 14, thereby finalizing. For the optical disc 2 being processed, VMG data is acquired. On the other hand, if the optical disc 2 has not yet been finalized, RMA information is acquired. If it is determined from the RMA information that data has already been recorded in the real-time data recording area of the optical disc 2, the temporary VMG and the management information VTSI data for each title are sequentially acquired based on the NWA. . Thereby, the microcomputer 4 acquires management information of the optical disc 2 necessary for recording / reproducing of the optical disc 2 in the same manner as an optical disc apparatus for recording / reproducing ordinary DVD.
[0096]
In this process, the microcomputer 4 acquires UDF data in addition to VMG data. If the extended management information DK is recorded in the real-time data recording area, the extended management information DK is also acquired. As a result, the microcomputer 4 can also acquire the management information of the extension file so that the extension file not defined in the DVD-video format can be reproduced from the optical disc 2. The microcomputer 4 records and holds a series of management information acquired in this way in a built-in memory.
[0097]
Subsequently, the microcomputer 4 proceeds to step SP5 and determines whether or not an instruction to eject the optical disk 2 is given. If an affirmative result is obtained, the microcomputer 4 instructs a loading mechanism (not shown) to eject the optical disk 2 and then proceeds to step SP2. Return.
[0098]
On the other hand, when an instruction other than the ejection of the optical disc 2 is obtained from the user, the process proceeds from step SP5 to step SP6, whether the user's operation is an operation for instructing recording (indicated by REC) or an operation for instructing reproduction ( It is determined whether the operation for instructing the power-off is indicated (indicated by Power OFF). If the user operation is an operation for instructing reproduction, the microcomputer 4 proceeds from step SP6 to step SP7, executes a reproduction processing procedure for reproducing a file recorded on the optical disc 2, and returns to step SP5.
[0099]
On the other hand, when the operation by the user is an operation for instructing recording, the microcomputer 4 proceeds from step SP6 to step SP8, executes a recording processing procedure for recording a moving image or a still image on the optical disc 2, and returns to step SP5. The microcomputer 4 skips the recording process procedure and returns to step SP5 because the optical disk 2 is processed so as not to be able to record data on the optical disk 2 when so-called finalization processing is performed and UDF and VMG are formed. . Even when the finalizing process is performed as described above, when the optical disc 2 is an erasable DVD-RW, the recorded data is erased by user confirmation, and the recording process procedure is executed.
[0100]
On the other hand, when the operation by the user is an operation to turn off the power, the microcomputer 4 proceeds from step SP6 to step SP9, executes a power-off process, and proceeds to step SP4 to end the processing procedure. The microcomputer 4 updates the NWA recording in the RMA as necessary so that the latest temporary VMG recorded on the optical disc 2 is indicated by the NWA when the optical disc 2 is ejected or when the power is turned off.
[0101]
In the recording processing procedure among the processing procedures executed in this way, when the optical disc 2 is a DVD-R, the microcomputer 4 records moving image and still image files by the INC method described above with reference to FIG. On the other hand, when the optical disc 2 is a DVD-RW or DVD-RAM, moving image and still image files are recorded by the ROW method described above with reference to FIG.
[0102]
FIG. 9 is a flowchart showing the recording processing procedure described above with reference to FIG. When the microcomputer 4 starts this recording processing procedure, the process proceeds from step SP11 to step SP12. Whether the recording instruction by the user relates to recording of a moving image, recording of a still image, or processing of finalizing. to decide.
[0103]
Here, when the recording instruction by the user relates to the recording of the moving image, the microcomputer 4 proceeds from step SP12 to step SP13, and determines whether or not the user has instructed to start recording. If a negative result is obtained here, the microcomputer 4 repeats step SP13. On the other hand, if a positive result is obtained, the microcomputer 4 proceeds from step SP13 to step SP14, and as described with reference to FIGS. Record. Further, the process proceeds to step SP15, where it is determined whether or not the user has instructed to stop recording. If a negative result is obtained here, the process returns to step SP14. Thereby, the microcomputer 4 repeats the processing procedure of steps SP14-SP15-SP14, sequentially records the actual data, and when an affirmative result is obtained in step SP15, the recording of the actual data is finished and the recording of VTSTT VOBS is completed. To do.
[0104]
Subsequently, the microcomputer 4 proceeds to step SP16, and sequentially forms VTSI BUP, VTSI, and VTSM VOBS, and also forms a temporary VMG. Further, the NWA recorded in the memory is updated so as to point to the temporary VMG, thereby recording one VTS, and the process proceeds to step SP17 to end the processing procedure.
[0105]
On the other hand, when the instruction is a still image recording by the user, the microcomputer 4 proceeds from step SP12 to step SP18 and determines whether or not the user has instructed the start of recording. If a negative result is obtained here, the microcomputer 4 repeats step SP18, whereas if a positive result is obtained, the microcomputer 4 proceeds from step SP18 to step SP19, and as described with reference to FIGS. 3 and 4, the still image file. Record the extended file by. Further, the process proceeds to step SP20, where it is determined whether or not the user has instructed to stop recording. If a negative result is obtained here, the process returns to step SP19. Thereby, the microcomputer 4 repeats the processing procedure of steps SP19-SP20-SP19, sequentially records the still image file, and when an affirmative result is obtained in step SP20, the recording of the still image file is terminated and the process proceeds to step SP21. . Here, the microcomputer 4 records the extended management information DK and the temporary VMG, moves to step SP17, and ends this processing procedure.
[0106]
On the other hand, if the recording instruction is related to the finalizing process by the user, the microcomputer 4 proceeds from step SP12 to step SP22 and determines whether or not the user has instructed the start of recording. If a negative result is obtained here, the microcomputer 4 repeats step SP22. On the other hand, if a positive result is obtained, the microcomputer 4 moves from step SP22 to step SP23, and as described with reference to FIGS. Then, the process proceeds to step SP17 and the processing procedure is terminated.
[0107]
On the other hand, FIG. 10 is a flowchart showing the reproduction processing procedure described above with reference to FIG. When starting the reproduction processing procedure, the microcomputer 4 proceeds from step SP31 to step SP32, and determines whether the reproduction instruction by the user relates to recording of a moving image or recording of a still image.
[0108]
If the reproduction instruction by the user is related to reproduction of a moving image, the microcomputer 4 proceeds from step SP32 to step SP33, and determines whether or not the user has instructed the reproduction start. If a negative result is obtained here, the microcomputer 4 repeats step SP33, whereas if a positive result is obtained, the microcomputer 4 proceeds from step SP33 to step SP34. Here, the microcomputer 4 controls the entire operation so as to reproduce the moving image file instructed by the user on the basis of the management information recorded and held in the memory.
[0109]
That is, when the optical disc 2 is a finalized optical disc, the recording position of the corresponding file is detected from the VMG data held in the memory, and reproduction from the recording position is instructed to each part of the optical disc apparatus 1. On the other hand, when the optical disc 2 is an optical disc that has not been finalized, the recording position of the corresponding file is detected by the VTSI of each title held in the memory, and playback from this recording position is instructed to each part of the optical disc apparatus 1. .
[0110]
When the reproduction is instructed in this way, the microcomputer 4 subsequently proceeds to step SP35 to determine whether or not the user has instructed to stop the reproduction. If a negative result is obtained here, the microcomputer 4 returns to step SP34. Thereby, the microcomputer 4 repeats the processing procedure of steps SP34-SP35-SP34, and sequentially reproduces the moving image file instructed by the user. On the other hand, if an affirmative result is obtained in step SP35, the reproduction operation is terminated, the process proceeds to step SP36, and this processing procedure is terminated.
[0111]
On the other hand, when the reproduction instruction by the user relates to the reproduction of the extension file, the microcomputer 4 proceeds from step SP32 to step SP37 and determines whether or not the user has instructed the reproduction start. If a negative result is obtained here, the microcomputer 4 repeats step SP37, whereas if a positive result is obtained, the microcomputer 4 proceeds from step SP37 to step SP38.
[0112]
Here, when the optical disk 2 is an optical disk that has been finalized, the microcomputer 4 detects the recording position of the corresponding file from the UDF data held in the memory, and instructs each part of the optical disk apparatus 1 to reproduce from the recording position. . On the other hand, when the optical disc 2 is an optical disc that has not been finalized, the recording position of the corresponding file is detected from the extended management information DK held in the memory, and playback from this recording position is instructed to each part of the optical disc apparatus 1. .
[0113]
When the reproduction is instructed in this way, the microcomputer 4 subsequently proceeds to step SP39 to determine whether or not the user has instructed to stop the reproduction. If a negative result is obtained here, the microcomputer 4 returns to step SP38. Thereby, the microcomputer 4 repeats the processing procedure of steps SP38-SP39-SP38, and sequentially reproduces the still image file instructed by the user. On the other hand, if an affirmative result is obtained in step SP39, the reproduction operation is terminated, the process proceeds to step SP36, and this processing procedure is terminated.
[0114]
(1-2) Operation of the first embodiment
In the above configuration, in the optical disk device 1 (FIG. 1), when the optical disk is loaded by the user while the power is turned on, or when the power is turned on while the optical disk is loaded, the microcomputer 4 By driving the sled motor 21 via the DVD signal processing unit 14 and the motor amplifier unit 18, the optical head 19 moves to the inner peripheral side of the optical disc 2. Further, the optical head 19 irradiates the optical disk 2 with a laser beam, and the light reception result of the return light by the optical head 19 is sequentially processed by the analog front end unit 16 and the microcomputer 4. The control of the optical head 19 via the amplifier unit 18 performs tracking control and focus control processing. Further, the data recorded on the optical disc 2 is reproduced by the processing by the DVD signal processing unit 14 of the light reception result. In the optical disc apparatus 1, various information recorded on the inner peripheral side of the optical disc 2 is acquired by the microcomputer 4 by this series of processing and held in a memory built in the microcomputer 4.
[0115]
When the optical disc 2 is a read-only optical disc created by a stamper, and further when the optical disc 2 is a finalized optical disc in which only a moving image file is recorded, this series of processing causes the microcomputer 4 to VMG data that is management information for the DVD player recorded on the inner circumference side is acquired. Thus, in the optical disc apparatus 1, when the user instructs the reproduction of the optical disc 2, the title desired by the user is driven by driving the spindle motor 20 via the DVD signal processing unit 14 and the motor amplifier unit 18 in accordance with the VMG data. In the state where the optical head 19 seeks to the recording position and tracking control and focus control are performed according to the light reception result of the optical head 19, the light reception result of the optical head 19 is converted to the DVD signal processing unit 14, the header information processing unit 7, The decompression processing unit 6 sequentially processes the video data as a moving image. That is, a reproduction signal whose signal level changes according to the pit sequence of the optical disc 2 as a light reception result is processed by the analog front end unit 16 to generate reproduction data. This reproduction data is decoded and deinterleaved by the DVD signal processing unit 14. Error correction processing is performed. Further, the reproduction data subjected to the error correction processing is input to the header information processing unit 7, where the header is removed, and information on the header is notified to the microcomputer 4. Subsequently, the data is input to the compression / decompression processing unit 6, separated into video data and audio data by the multiplexing processing unit 10, and the video data is decompressed by MPEG by the video processing unit 8, and then monitored by the monitor unit 12. Displayed or output from the video / encoder 13 to an external device. On the other hand, the audio data is decompressed by the audio processing unit 11 and then provided to the monitor by the monitor unit 12 or output from the video / encoder 13 to an external device.
[0116]
On the other hand, when the optical disk 2 is a recordable virgin disk, the RMA data of the optical disk 2 is acquired by the microcomputer 4 by accessing the optical disk 2 when the optical disk 2 is loaded or when the power is turned on. In the optical disc apparatus 1, when a moving image shooting mode is selected by the user, when the optical disc 2 is a DVD-R (FIG. 1), the microcomputer 4 forms UDF and VMG by updating the RMA held in the memory. The area is secured by reserving Rzone1. When the optical disk 2 is a DVD-RW or the like (FIG. 2), the RMA data is similarly updated, and the area for forming the UDF and VMG and the area for generating the VTSI and VTSM VOBS of the first VTS are secured by padding. .
[0117]
In this state, when the start of recording is instructed by the user, video data and audio data are sequentially input from the video input unit 3 and the audio input unit 5, and the video data is processed by the MPEG video processing unit 8 for the video data. The audio processing unit 11 performs data compression processing on the audio data. Further, the compressed video data and audio data are multiplexed by the multiplexing processing unit 10, and a header is added to the data of the processing result by the header information processing unit 7. In the subsequent DVD signal processing unit 14, after the error correction code is added, the interleaving process and the encoding process are performed. 16, whereby pit rows are sequentially formed on the optical disc 2 and video data based on moving images is sequentially recorded.
[0118]
In the optical disc apparatus 1, when the user gives an instruction to stop recording, a series of processing in the compression / decompression processing unit 6 and the like is controlled by the microcomputer 4 to stop recording video data, and subsequently recorded in this way. File management information based on moving images is recorded on the optical disc. That is, in the optical disk apparatus 1, management information is generated by the microcomputer 4 from information such as position information, file size information, recording date and time recorded by moving images in this way, and this is recorded in succession to the video data. The management information is output to the DVD signal processing unit 14 and recorded on the optical disc 2, whereby a VTSI BUP area is formed. When the optical disc 2 is a DVD-RW or the like, an area for generating the VTSI and VTSM VOBS of the subsequent VTS is secured by padding, and the optical head 19 seeks to the area for generating the previously secured VTSI and VTSM VOBS. In this area, similar management information is output to the DVD signal processing unit 14 and recorded on the optical disc 2, thereby forming VTSI and VTSM VOBS areas. Further, when the optical disc is a DVD-R, the same processing is executed by Rzone reservation.
[0119]
In the optical disk apparatus 1, one title of video data based on moving images is recorded. As a result, in the optical disc apparatus 1, when recording a file by moving image, the management information and file are recorded by the DVD video format in which the management information by VTSI, the management information by VTSM VOBS, the moving image file, and the management information by VTSI BUP are continuous. Is done.
[0120]
In the optical disc apparatus 1, when a user subsequently instructs to record a moving image, titles are sequentially recorded on the optical disc 2 by repeating the same processing. In the optical disc apparatus 1, when one title is recorded in this way, a temporary VMG indicating the recording position of the VTSI is recorded following the VTSI BUP, and the subsequent area is secured. Also, the RWA NWA held in the memory is updated so as to indicate the area following the temporary VMG, and the NWA held in the memory is recorded on the optical disk 2 by ejecting the optical disk 2 and turning off the power. As a result, the optical disk apparatus 1 can reproduce the VTSI by sequentially tracing the NWA and the temporary VMG until the finalization, thereby acquiring information necessary for the reproduction of the moving image file. The desired moving image file can be reproduced according to the recorded VTSI.
[0121]
In the optical disc apparatus 1, when a title is recorded in this way and finalization processing is instructed by the user, UDF and VMG data are generated by management information that forms a pair with the title recorded in the memory. These are recorded in the inner peripheral area secured on the optical disc 2, and lead-in and lead-out are formed. As a result, this optical disc is set to be reproducible by a DVD player that supports only the normal DVD format.
[0122]
On the other hand, when the user selects the still image recording mode, the UDF and VMG areas are secured on the virgin disc by updating the RMA stored in the memory and further by padding as in the case of the moving image. Is done. In the optical disc apparatus 1, the operation mode of the imaging unit is switched to the still image mode, and the operation mode in the compression / decompression processing unit 6 is switched to the JPEG data compression operation mode.
[0123]
In this state, when the user gives an instruction to start recording a still image, the video data of the still image input from the video input unit 3 is compressed in the JPEG format by the video processing unit 8 of the compression / decompression processing unit 6. Thereafter, the audio data output from the audio processing unit 11 is multiplexed with the multiplexing processing unit 10. As a result, in the optical disc apparatus 1, data to be recorded is generated by video data of still images instead of video data of moving images, and this data is sequentially recorded on the optical disc 2 in the same manner as in the case of moving images.
[0124]
In the optical disc apparatus 1, in the recording of moving images, first, VTSI and VTSM VOBS areas are secured and actual data is recorded. In the still picture recording, such areas are not secured. Record actual data from still images. In addition, when the user instructs the recording of the subsequent still image, the subsequent still image is recorded on the optical disc 2 in the same manner. In addition, for each of these recordings, the recording position of each file is recorded in the memory.
[0125]
In the optical disc apparatus 1, when a desired number of files are recorded on the optical disc in this way and the recording stop of the still image is instructed by the switching of the operation mode by the user, the recording position held in the memory, etc. The extended management information DK is recorded in the following area for the plurality of files. In addition to the management information of the moving image file, the temporary VMG is recorded and the NWA is updated so as to indicate the extended management information DK. As a result, the optical disk apparatus 1 can record files such as still images not defined in the DVD video format on the optical disk 2.
[0126]
When the optical disc 2 recorded in this way is loaded into an optical disc apparatus that supports only the normal DVD video format, management information recorded in accordance with a DVD video format such as VTSI is detected based on the temporary VMG, and this management information is detected. By reproducing the VTS in this way, it is possible to prevent the moving image reproduction from affecting the file such as the still image recorded in this way and the corresponding extended management information. As a result, on the optical disc recorded in this way, a moving image file can be reproduced by a normal DVD player.
[0127]
On the other hand, according to the optical disk apparatus that supports files other than such moving images, it is possible to reproduce still image files. That is, when such an optical disk 2 is loaded, the management information and the extended management information DK are reproduced in the optical disk apparatus 1 by searching the optical disk 2 with reference to NWA and held in the memory of the microcomputer 4.
[0128]
Thereby, for example, the titles of moving images and still images recorded on the optical disc 2 in accordance with user instructions can be provided to the user. Also, when the user gives an instruction to reproduce a moving image in accordance with the reproduction instruction by the user, the corresponding moving image file is reproduced in the same manner as described above for the reproduction-only optical disk by the data of VTS and VTSM VOBS.
[0129]
On the other hand, when the user instructs the reproduction of the still image file, the recording position of the corresponding file is detected from the extended management information stored in the memory, and the data recorded on the optical disc 2 is sequentially reproduced based on the detection result. Then, it is processed by the same route as the reproduction data by the moving image. In the optical disk apparatus 1, when processing the reproduction data by the still image in the processing of the reproduction data, the processing of the video processing unit 8 is switched by the microcomputer 4 so that the video data compressed by JPEG is decompressed. As a result, the video data of the still image can be confirmed by the monitor unit 12 and further output from the video / audio encoder 13 to an external device.
[0130]
Such a file of still images or the like is generally smaller in file size than a file of moving images, whereas in the optical disc apparatus 1, extended management information as such management information is collected for a plurality of files. Created and recorded. As a result, the optical disc apparatus 1 can reduce the reduction of the recording area due to the recording of the management information when the extended file such as the still image file is recorded.
[0131]
Further, when a plurality of files are recorded together in this way, they are recorded together for each type of file that is an attribute of the file, thereby simplifying search processing, finalization processing described later, and the like. It is made like that.
[0132]
In particular, in this embodiment, the extension file and the extension file information of each extension file are recorded as a set, and other sets that have been recorded so far are set by setting the area management information in the extension management information DK. By pointing the extended file information with the area management information, the extended file information EX, which is information necessary for reproducing the individual extended files recorded together, is managed in a distributed manner by recording the area management information. As a result, the information recording surface of the optical disc 2 can be used more effectively than in the case where such extended file information is collected and the extended management information is recorded.
[0133]
In the optical disc apparatus 1, the so-called virgin disc, the moving image and the still image file are recorded on the so-called virgin disc, the optical disc that has only been recorded with the moving image, and the optical disc that has not been finalized yet. Recorded sequentially by user operation.
[0134]
On the other hand, when finalization is instructed by the user for an optical disc on which moving images and still images are recorded in this way, management information, extended management information, moving images and still images obtained from the optical disc and stored in the memory are stored. Based on the management information and the extended management information created by recording and stored in the memory, UDF data for a computer is created, and this data is recorded in an area secured in advance on the optical disc 2. Also, VMG data for a DVD player is generated only from the management information of the moving image file and is recorded on the optical disc 2 in the same manner.
[0135]
As a result, in the optical disc apparatus 1, the management information in pairs is recorded for all the files recorded on the optical disc 2 in the UDF area which is the first management information recording area in the management information recording area of the optical disc 2. As a result, a file management system in a computer is constructed. On the other hand, only a moving image file having a specific attribute recorded on an optical disc is recorded in the DVD VMG area, which is the second management information recording area. Management information is recorded together and a file management system based on the DVD video format is constructed.
[0136]
As a result, when a finalized optical disc is reproduced from a DVD player, a file recorded on the optical disc 2 is reproduced with reference to a VMG area for DVD. Thus, it is possible to reliably reproduce a moving image in the DVD video format without affecting the reproduction of the moving image.
[0137]
When the finalized optical disk is reproduced by a computer, the UDF is a file management format corresponding to the file management system of the computer. In the computer, each file is reproduced by the UDF, so that a moving image file can be obtained. Of course, files such as still images can be reproduced and used.
[0138]
When such an optical disk 2 is reproduced by the optical disk apparatus 1, the optical disk apparatus 1 reproduces the optical disk 2 based on UDF instead of VMG, or in addition to VMG, the optical disk based on UDF. By reproducing 2, it is possible to reproduce not only the moving image file recorded in this way but also a still image file.
[0139]
(1-3) Effects of the first embodiment
According to the above configuration, the extended file and the extended file information are recorded as a set, and another set of extended file information can be indicated by the area management information, thereby making the information recording surface effective. It is possible to record files such as still images other than moving images.
[0140]
That is, the extended file information is at least the address of the recording start position of the corresponding extended file, the file size, and the file name information, so that the extended file can be reproducibly recorded as indicated by the area management information. it can.
[0141]
Further, the area management information is at least the address of the recording start position of the extended file information recorded collectively and the information on the number of files, so that the extended file information can be definitely reproduced based on the area management information, As a result, the corresponding extended file can be recorded in a reproducible manner.
[0142]
In addition, the temporary VMG that is temporary management information is recorded together with the extended management information and the management information of the moving image file, and the temporary management information can be reproduced by the address indicated by the NWA that is the data of the fixed area of the optical disc. By assigning information indicating the recording position of the moving image file management information recorded on the optical disc and the latest extended management information to the temporary management information so far, the moving image file and the extended file are assigned to one temporary file. The management information can be used to effectively use the information recording surface.
[0143]
In addition, by managing the extended file information for each extended file attribute in this extended management information, it is possible to manage different types of extended files in a distributed manner, thereby effectively using the information recording surface. Thus, various extension files can be recorded so as to be reproducible.
[0144]
That is, based on the extended management information and the management information of the moving image file recorded in this way, by reproducing the moving image file and the extended file recorded on the optical disc, various files other than the moving image are recorded on the optical disc. Can be played.
[0145]
Also, according to the user's instruction, information necessary for playback of the movie file and the extension file is collectively recorded in the inner area of the optical disc by the management information and the extension management information, and the movie file is played back by the management information in the subsequent area. By recording necessary information together, finalization processing can also be executed for the extended file.
[0146]
In addition, the inner peripheral area is an area corresponding to a file management system by a computer, and the subsequent area is an area corresponding to a DVD video format file management system. It can be reproducible.
[0147]
(4) Other embodiments
In the above-described embodiment, the case where a series of processing is executed by a processing program installed in advance in the optical disc apparatus has been described. However, the present invention is not limited to this, and a program downloaded via a network such as the Internet. The present invention can be widely applied to the case where this kind of processing procedure is executed by the installation of the above, and the case where this kind of processing procedure is executed by installing programs provided by various recording media. As such a recording medium, a recording medium such as a magnetic disk, an optical disk, or a magnetic tape can be applied.
[0148]
In the above-described embodiment, the case where the moving image file and the extension file are sequentially recorded in the continuous area has been described. However, the present invention is not limited to this, and the area for the moving image file and the area for the extension file are set respectively. Thus, the present invention can be widely applied to recording moving image files and extended files.
[0149]
In the above-described embodiment, the case has been described in which the management information of the moving image file and the extended management information are indicated by the temporary VMG that is one piece of management information. However, the present invention is not limited to this, and for the moving image file and the extended file In addition, management information may be set individually.
[0150]
In the above-described embodiment, the case where the temporary VMG that is the management information is pointed out by the NWA has been described. However, the present invention is not limited to this, and the management information is based on the information recorded in the fixed area of the optical disc 2. As indicated, the same effect can be obtained.
[0151]
In the above-described embodiment, the case where a still image file is recorded as an extension file has been described. However, the present invention is not limited to this, and various files such as a text file and a music file can be applied to the extension file. it can.
[0152]
In the above-described embodiment, the case where the present invention is applied to an optical disc apparatus having an imaging function has been described. However, the present invention is not limited to this, and this type of processing is executed by a computer application program. Can also be widely applied.
[0153]
【The invention's effect】
As described above, according to the present invention, an extended file and extended file information are recorded as a set, and another set of extended file information can be indicated by area management information, thereby recording information. It is possible to record a file such as a still image other than a moving image by effectively using the surface.
[Brief description of the drawings]
FIG. 1 is a chart for explaining extended management information according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an optical disc apparatus according to an embodiment of the present invention.
3 is a chart for explaining recording by the INC method in the optical disc apparatus of FIG. 2; FIG.
4 is a chart for explaining recording by the ROW method in the optical disc apparatus of FIG. 2; FIG.
FIG. 5 is a chart showing extended management information.
FIG. 6 is a chart showing a relationship between extended file information and extended management information.
7 is a chart showing a case where extended files are managed in a concentrated manner in comparison with FIG.
8 is a flowchart showing a processing procedure of a microcomputer in the optical disc apparatus of FIG.
FIG. 9 is a flowchart showing a recording processing procedure in the processing procedure of FIG. 8;
FIG. 10 is a flowchart showing a playback processing procedure in the processing procedure of FIG. 8;
FIG. 11 is a chart for explaining a DVD video format;
FIG. 12 is a chart for explaining recording by the INC method.
FIG. 13 is a chart for explaining recording by a ROW method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Optical disk apparatus, 2 ... Optical disk, 4 ... Microcomputer, 6 ... Compression / decompression processing part

Claims (18)

In an optical disk apparatus that records a moving image file and management information of a moving image file necessary for reproduction of the moving image file on an optical disk,
Recording one or a plurality of extension files other than the moving image file and the extension management information of the extension file on the optical disc as a set;
In the extended management information,
Extended file information necessary for reproduction of the extended file related to at least the same set; and
Area management information indicating the recording position of the extended file information of another set recorded so far;
An optical disc apparatus characterized by allocating area management information indicating a recording position of the extended file information in the same set. The extended file information is
2. The optical disc apparatus according to claim 1, wherein at least information on an address, a file size, and a file name of a recording start position of the corresponding extension file is provided. The area management information is
2. The optical disc apparatus according to claim 1, wherein at least the address of the recording start position of the extended file information and the information on the number of files are collectively recorded. The temporary management information is recorded together with the extended management information and the management information of the moving image file, and the recording position information of the temporary management information is recorded in a fixed area of the optical disc.
The information indicating the recording position of the management information of the moving image file recorded on the optical disc and the latest extended management information so far is assigned to the temporary management information. Optical disk device. The extended management information is
2. The optical disc apparatus according to claim 1, wherein the extended file information is managed for each attribute of the extended file. 2. The optical disc apparatus according to claim 1, further comprising a reproducing unit that reproduces the moving image file and the extended file recorded on the optical disc based on the extended management information and the management information of the moving image file. Based on user instructions,
In the inner peripheral area of the optical disc, information necessary for reproduction of the moving image file and the extension file is collectively recorded by the management information and the extension management information.
2. The optical disc apparatus according to claim 1, wherein information necessary for reproducing the moving image file is collectively recorded in the subsequent area based on the management information. The inner peripheral area is an area corresponding to a file management system by a computer,
8. The optical disk apparatus according to claim 7, wherein the subsequent area is an area corresponding to a file management system of a DVD video format. In an optical disk recording method for recording on an optical disk by combining a moving image file and management information of the moving image file necessary for reproduction of the moving image file,
An extended file recording step of recording an extended file other than the one or a plurality of moving image files and the extended management information of the extended file on the optical disc as a set;
The extended file recording step includes:
In the extended management information,
Extended file information necessary for reproduction of the extended file related to at least the same set; and
Area management information indicating the recording position of the extended file information of another set recorded so far;
An optical disc recording method, wherein area management information indicating a recording position of the extended file information relating to the same set is allocated and recorded. A temporary management information recording step of recording temporary management information together with the extended management information and the management information of the moving image file, and recording the recording position information of the temporary management information in a fixed area of the optical disc; Have
The temporary management information recording step includes:
10. The information indicating the recording position of the management information of the moving image file that has been recorded on the optical disc and the latest extended management information are allocated to the temporary management information. Optical disc recording method. 10. The optical disc recording according to claim 9, further comprising a playback step of playing back the moving image file and the extended file recorded on the optical disc based on the extended management information and the management information of the moving image file. Method. In response to user instructions,
In the inner peripheral area of the optical disc, information necessary for reproduction of the moving image file and the extension file is collectively recorded by the management information and the extension management information.
10. The optical disk recording method according to claim 9, further comprising a finalizing step of collectively recording information necessary for reproducing the moving image file according to the management information in a subsequent area. In a program of an optical disk recording method for recording a moving image file and management information of a moving image file necessary for reproduction of the moving image file on an optical disc,
An extended file recording step of recording an extended file other than the one or a plurality of moving image files and the extended management information of the extended file on the optical disc as a set;
The extended file recording step includes:
In the extended management information,
Extended file information necessary for reproduction of the extended file related to at least the same set; and
Area management information indicating the recording position of the extended file information of another set recorded so far;
A program for an optical disc recording method, wherein area management information indicating a recording position of the extended file information relating to the same set is allocated and recorded. A temporary management information recording step of recording temporary management information together with the extended management information and the management information of the moving image file, and recording the recording position information of the temporary management information in a fixed area of the optical disc; Have
The temporary management information recording step includes:
14. The information indicating a recording position of the management information of the moving image file recorded on the optical disc and the latest extended management information so far is allocated to the temporary management information. Program for recording optical discs. In response to user instructions,
In the inner peripheral area of the optical disc, information necessary for reproduction of the moving image file and the extension file is collectively recorded by the management information and the extension management information.
14. The program of the optical disk recording method according to claim 13, further comprising a finalizing step of collectively recording information necessary for reproducing the moving image file according to the management information in a subsequent area. In a recording medium recording a program of an optical disc recording method for recording a moving image file and management information of the moving image file necessary for reproduction of the moving image file on an optical disc,
The program of the recording method of the optical disc is
An extended file recording step of recording an extended file other than the one or a plurality of moving image files and the extended management information of the extended file on the optical disc as a set;
The extended file recording step includes:
In the extended management information,
Extended file information necessary for reproduction of the extended file related to at least the same set; and
Area management information indicating the recording position of the extended file information of another set recorded so far;
A recording medium recording a program of an optical disk recording method, wherein area management information indicating the recording position of the extended file information relating to the same set is allocated and recorded. A temporary management information recording step of recording temporary management information together with the extended management information and the management information of the moving image file, and recording the recording position information of the temporary management information in a fixed area of the optical disc; Have
The temporary management information recording step includes:
The information indicating the recording position of the management information of the moving image file recorded on the optical disc and the latest extended management information so far is allocated to the temporary management information. A recording medium on which a program for a recording method of an optical disc is recorded. In response to user instructions,
In the inner peripheral area of the optical disc, information necessary for reproduction of the moving image file and the extension file is collectively recorded by the management information and the extension management information.
17. The recording medium recording the program of the optical disk recording method according to claim 16, further comprising a finalizing step of collectively recording information necessary for reproducing the moving image file according to the management information in a subsequent area.

Images