JP2003036649A - Disk recording and reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a recording error and a storage error by carrying out area management to an information recording/reproducing medium. SOLUTION: A control part 400 is provided with a recording/reproducing area setting means to a hard disk 100, and a storage specifying means to give specifying signals for specifying storage data to the recording/reproducing area setting means. Then, a recording/reproducing area control means is provided with a repetitive recording area setting means to set a repetitive recording area 11 as an information recording area to the hard disk, and a means to exclude the area where the storage data corresponding to the specifying signals are recorded from the repetitive recording area 11, and to set a new repetitive recording area when the specifying signals for the storage data are given from the storage specifying means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording / reproducing apparatus which effectively utilizes an information recording / reproducing medium incorporated in a device such as a hard disk.

[0002]

2. Description of the Related Art In recent years, high density recording of information has become possible on an information recording / reproducing medium such as a digital versatile disk (DVD) or a hard disk. There is a demand for an operation method that effectively uses such an information recording / reproducing medium.

[0003]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a disk recording / reproducing apparatus capable of managing an area for an information recording / reproducing medium and reducing recording errors and storage errors.

[0004]

In order to achieve the above object, the present invention provides an information recording / reproducing medium and an information recording area or an information reproducing area for the information recording / reproducing medium. The recording / reproducing area control means and the pre-recording / reproducing area control means are provided with a storage designating means for giving a designating signal for designating at least storage data. The pre-recording / re-area control means is given to the information recording / reproducing medium a repetitive recording area setting means for setting a repetitive recording area as an information recording area, and a storage data specifying signal from the storage specifying means. In this case, the area in which the storage data corresponding to the designation signal is recorded is excluded from the repetitive recording area and a new repetitive recording area is set.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. Reference numeral 100 denotes a hard disk, which is driven by a disk drive unit 102. The disk drive unit 102 has a data processing unit 103 in the write mode.
Receives the data from and writes it to the hard disk 100.

The data processing unit 103 includes a temporary storage unit 10
4 is connected and provided for temporarily buffering data to be written to the disk or data read from the disk.

The recording data is supplied from the encoder 201 to the data processing section 103. Encoder 201
Captures data from the external input unit 222 and encodes the data into a predetermined format. External input unit 222
There are external discs, television tuners, etc.

The data read from the hard disk 100 includes a disk drive section 102 and a data processing section 103.
Is input to the decoder 301 via. Decoder 30
In 1, the predetermined format is decoded, and the decoded output is supplied to the display unit 303 via the output unit 302.

The control unit 400 is for controlling other blocks, and is connected with the operation unit 401 and the display 402.

The above-mentioned disk recording / reproducing apparatus uses the video recording (VR) DV as its data format.
When the D standard is adopted, it becomes as follows.

The encoder 201 has a video and audio analog-digital converter for digitizing the input analog video signal and the input analog audio signal, a video encoder, and an audio encoder. Furthermore, it also includes a sub-picture encoder. It also includes a formatter for converting the output of each encoder into a predetermined DVD format and a buffer memory. An external analog video signal and an external analog audio signal, or an analog video signal and an analog audio signal from a TV (television) tuner are input to the encoder 201.

In the encoder 201, the digital video signal is converted into a digital video signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard. Digital audio signals are MPEG or AC
It is converted into a digital audio signal compressed at a fixed bit rate or a linear PCM digital audio signal based on the -3 standard.

When sub-picture information is input from the AV input section (for example, a signal from a DVD video player with an independent output terminal of sub-picture signal), the sub-picture signal in the DVD video signal is encoded by the sub-picture encoder ( It is run length compressed) and becomes a sub-picture bitmap.

The encoded digital video signal, digital audio signal, and sub-picture data are packed in a formatter to form a video pack, an audio pack and a sub-picture pack, which are further assembled into a pack.
DVD-recording standards (eg DVD-RAM, DVD
-R, DVD-RW and other standards).

Here, this apparatus supplies the information (pack of video, audio, sub-picture data, etc.) encoded by the encoder 201 and the created management information to the hard disk 100 via the data processing unit 103 and records it. can do.

Further, the disc drive section 1002 includes a rotation control system for the optical disc 1001, a laser drive system,
It has an optical system.

The control unit 400 includes a microcomputer block, a CPU (central processing unit), a ROM in which a control program and the like are written, and an R for providing a work area necessary for executing the program.
AM and.

The MPU of the control unit 400 uses the RAM as a work area in accordance with the control program stored in the ROM, and detects the defect location, the unrecorded area, the recording information recording position setting, the UDF recording, the AV address setting, etc. To execute.

The control unit 400 has an information processing unit necessary for controlling each block, and is a work RA.
M, directory detector, VMG (whole video management information)
An information creation unit, a copy related information detection unit, a copy and scrambling information processing unit (RDI processing unit), a packet header processing unit, a sequence header processing unit, and an aspect ratio information processing unit are provided.

Among the execution results of the MPU, the contents to be notified to the user are displayed on the display unit 402 of the DVD video recorder or on the on-screen display by the display unit 303.

Further, the control section 400 has a key input section 44 for giving an operation signal for operating this apparatus.

The decoder 301 is a DV having a pack structure.
A separator that separates and extracts each pack from the D format signal, a memory used when performing pack separation and other signal processing, and a V decoder that decodes the main video data (contents of the video pack) separated by the separator, It has an SP decoder that decodes the sub-picture data (contents of the sub-picture pack) separated by the separator, and an A decoder that decodes the audio data (contents of the audio pack) separated by the separator. In addition, a video processor is provided that combines the decoded main video data with the decoded sub video data as appropriate, and outputs a menu, a highlight button, subtitles, and other sub videos superimposed on the main video.

The output video signal of the decoder 301 is input to the output section 302. The output unit 302 synthesizes text data and the like. The voice output is omitted.

In the formatter of the encoder 201, each segmentation information is created during the recording, and the control section 400 is periodically provided.
To the MPU (information such as GOP head interrupt).
The division information includes the number of VOBU packs and VOBU
The end address of the I picture from the beginning, the reproduction time of the VOBU, and the like.

Here, in a real-time recording / reproducing apparatus using a DVD, a point to be noted is that when data is accessed, the reproduction is continued without interruption during the access (seek). Consecutive sectors are needed. This unit is called CDA (Contiguous
Data area). In other words, it is a data size that is agreed in advance to realize seamless reproduction.

It is advantageous that this CDA is in units of ECC (error correction code) blocks. Therefore, the CDA size is set to a multiple of 16 sectors, and the file system records in this CDA unit. The data processing unit 103 receives data in units of VOBU from the formatter of the encoder 201, and supplies data in units of CDA to the disk drive unit 102. Further, the control unit 400, when the MPU creates the management information necessary for reproducing the recorded data, and recognizes the data recording end command, the created management information is transferred to the data processing unit 1.
Send to 03. As a result, the management information is recorded on the disc. Therefore, when encoding is taking place,
From the encoder 201, the MPU of the control unit 400 receives information in units of data (division information, etc.). Also, the MPU of the control unit 400 recognizes the management information (file system) read from the disc at the start of recording, recognizes the unrecorded area of the disc, and transfers the data recording area to the disc via the data processing unit 103. It is set.

Here, the relationship between the management information of the real-time DVD and the video object which is the content will be briefly described.

In FIG. 2, the video object (VOB) will be described first. VOB is in the directory VR_MOV. It is called a VRO file. Video files have a hierarchical structure, and one file is 1
One or a plurality of VOBs (video objects), one VOB is composed of one or a plurality of VOBUs (video object units), and one VOBU
Is composed of a plurality of packs. As the plurality of packs, there are RDI packs, V (video) packs, A (audio) packs, and the like. Sub-picture pack (SP pack)
May exist.

The RDI pack is called a unit control information pack, a navigation information pack or a real time data information pack (RDI_PCK). This pack includes information indicating the start time at which the first field of the VOBU to which the pack belongs is reproduced, information indicating the recording time of the VOBU, manufacturer information (MNFI), and the like. It also includes display control information (DCI) and copy control information (CCI). The display control information indicates aspect ratio information, subtitle mode information, and film camera mode information. The copy control information (CCI) includes copy permission information (0,0) or copy prohibition (copy prohibition permission) information (1,1).

The V pack is obtained by compressing video data in the MPEG2 system, and is composed of a pack header, a packet header and a video data section. In the A pack, audio data is, for example, linear PCM or MPEG,
Alternatively, it is processed by a method such as AC3 and is composed of a pack header, a packet header, and an audio data section.

The management information is the video manager (VM
G), and a program chain (PGC) that manages the data reproduction order is defined therein. A cell (Cell) is defined in the program chain (PGC), and video object information (VOBI) that is information of a video object (VOB) to be played back is defined in the cell (Cell). . PGC
Is a program chain information (PGCI) part. There are two types of PGCI, one is the original PGCI (ORG_PGC
I) and the other is a user-defined PGC table (UD_PGCIT).

In the VOBI, a time map (TMA
P) is described, and this TMAP can specify the VOBU that constitutes the VOB corresponding to the VOBI. The link from the cell to the VOBI is specified by the logical address. Further, the TMAP information is linked to the VOB and the VOBU based on the stream number of the VOB, the number of VOBUs in this VOB, the entry number for each VOBU, and the logical address to each target VOBU.

Next, an example of the characteristic portion of the present invention will be described.

FIG. 3A schematically shows a data area when information is recorded on the hard disk 100. In this embodiment, in the initial state, the entire data recording area of the hard disk 100 is managed as the repetitive recording area 11. In the recording mode, the input information is described in the repetitive recording area 11, and when it becomes full, the overwriting is performed from the first recorded portion. Here, when an operation for saving a part of the record data is performed, the data area 12 is managed as the save data area 12, as shown in FIG.

That is, in the apparatus of the present invention, the recording / reproducing area control means for setting the information recording area or the reproducing area for the information recording / reproducing medium (hard disk) and the pre-recording / reproducing area control means will be described later. On the other hand, there is provided a storage designating means for providing at least a designating signal for designating storage data. The recording / reproducing area control means has a repetitive recording area setting means for setting a repetitive recording area as an information recording area on the information recording / reproducing medium, and when a save data specifying signal is given from the save specifying means, A unit for excluding the region in which the storage data corresponding to the designation signal is recorded from the repetitive recording region and setting a new repetitive recording region is provided.

FIG. 4 is a diagram for explaining another embodiment of the present invention.

In this embodiment, in the initial state, the data recording area of the hard disk 100 is managed as the repetitive recording area 11 and the information storage area 22.
In the recording mode, the input information is described in the repetitive recording area 11, and when it becomes full, the overwriting is performed from the first recorded portion. Here, when an operation for saving a part of the recorded data is performed, the saved data is transferred as a saved data 23 to a part of the information saving area 22.

That is, in the apparatus of the present invention, as will be described later, the recording / reproducing area control means for setting the information recording area or the information reproducing area for the information recording / reproducing medium, Storage designation means for giving a designation signal for designating storage data. Then, the recording / reproducing area control means has a repetitive recording area setting means for setting the repetitive recording area 11 on the information recording / reproducing medium and an information storing area 22 for storing the save data on the information recording / reproducing medium. And a storage area setting means for setting.

Here, there is provided a transfer means for transferring the storage data corresponding to the designation signal from the repetitive recording area 11 to the information storage area 22 when the storage data designating signal is given from the storage designating means. As a result, the saved data 23
Is recorded in the information storage area 22.

FIG. 5 shows another embodiment of the present invention. In this embodiment, in the initial state, the data recording area of the hard disk 100 is managed as the repetitive recording area 11 and the information storage area 22. Here, if there is a designation to save the record data from the operation unit, the data is recorded in the information storage area 22 from the beginning, and if there is no designation to save it, the repeated recording area 11 is recorded. Data recording is performed.

FIG. 6 shows an operation example based on a program for executing the example described with reference to FIG. The system operates based on the program installed in the control unit 400. The device determines whether it is in the recording mode (step A1). In the recording mode, the input signal is encoded and recorded in the repeated recording area 11 (step A2). Next, it is determined whether or not the save data is designated (step A3). When the save data is designated, the management data is created by excluding the area where the save data is recorded from the repeated recording area 11 (step A4).
Next, it is determined whether or not the recording mode is still in progress (step A5), and if the recording mode is canceled, the process ends.

The management data is managed as a recorded area in, for example, the file system of the disk management information. The designation of this area is described as a flag for the number information of the physical sector, for example.

FIG. 7 shows an operation example based on a program for executing the example described with reference to FIG. The processing from step A1 to step A3 is the same as the above-mentioned example of FIG. In this embodiment, when the save data is designated, the process of copying the save data from the repeated recording area 11 to the save area 22 is performed. The subsequent processing is the same as that of the previous embodiment.

FIG. 8 shows an operation example based on a program when the example described in FIG. 5 is executed. The device determines whether it is in the recording mode (step A1).
Next, it is determined whether or not the data to be recorded has been designated (step C2). If the save is not designated, the input signal is encoded and recorded in the repeated recording area 11 (step C2). If the save is designated, the input signal is encoded and recorded in the save area 22 (step C3).

In this case, the device displays on the display 402 or the display unit 303 that the data currently being recorded is "stored" or "not stored". Good. Subsequent processing is the same as the previous example.

As described above, according to the present invention, the usability can be improved by managing the hard disk so that the repeated recording area (so-called ring buffer section) and the data storage area can be distinguished from each other. According to the present invention, for continuously and repeatedly recording video information in the repetitive recording area, for example, when used as a monitoring device,
It is valid. That is, a predetermined time (for example, information of about 5 to 6 hours) can be stored, and within that time, a desired scene can be cut out and stored for storage. Further, the embodiment shown in FIGS. 4 and 5 is also convenient when performing after recording.

When the storage data is designated, the reproduction mode and the recording mode are alternately performed in the control unit 400, and the data reading and the data recording are performed.
Also, in the save data designation mode, switch to playback mode,
By reproducing the stored data and designating the first video and the last video, the control unit 400 can recognize the data area in which the stored data is recorded.
Next, when this designation is completed, the data is transferred by transferring or saving the data.

In the above description, the medium for recording / reproducing information has been described as a hard disk, but a writable and readable optical disk may be used. Of course, it may be a large-capacity semiconductor memory. Furthermore, in the above description, the recording medium has been described as a disk reproducing device having one built-in hard disk, but it may be a disk reproducing device having a plurality of recording media (hard disks, optical disks, etc.).

The present invention is not limited to the above embodiment. For example, a large capacity memory may be used as the repetitive recording area. Then, the storage area may be provided in the above-mentioned hard disk or optical disk. In this case, the large capacity memory is, for example, the temporary recording unit 1.
04 may be utilized.

[0051]

As described above, according to the present invention,
Area management for the information recording / reproducing medium can be performed to reduce recording errors and storage errors.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a data format adopted by the device of the present invention.

FIG. 3 is an explanatory diagram showing an example of a data recording / managing mode by the device of the present invention.

FIG. 4 is an explanatory diagram showing another example of a data recording / managing mode by the device of the present invention.

FIG. 5 is an explanatory diagram showing another example of a data recording / managing mode by the device of the present invention.

FIG. 6 is a flowchart showing an operation procedure for realizing the data recording / management described in FIG.

FIG. 7 is a flowchart showing an operation procedure for realizing the data recording / management described in FIG.

FIG. 8 is a flowchart showing an operation procedure for realizing the data recording / management described in FIG.

[Explanation of symbols]

100 ... Hard disk, 102 ... Disk drive section, 103 ... Data processing section, 104 ... Temporary storage section, 20
1 ... Decoder, 222 ... External input section, 301 ... Decoder, 302 ... Output section, 303 ... Display section, 400 ... Control section.

Claims (5)

[Claims] At least one of an information recording / reproducing medium, a recording / reproducing area control means for setting an information recording area or an information reproducing area for the information recording / reproducing medium, and a pre-recording / reproducing area controlling means. A pre-recording / re-area control means for setting a repetitive recording area as an information recording area on the information recording / reproducing medium. Means, and when a storage data designation signal is given from the storage designation means, a region in which the storage data corresponding to the designation signal is recorded is excluded from the repetitive recording region to obtain a new repetitive recording region. A disc recording / reproducing apparatus, comprising: 2. An information recording / reproducing medium, a recording / reproducing area control means for setting an information recording area or an information reproducing area for the information recording / reproducing medium, and a pre-recording / reproducing area controlling means. A pre-recording / re-area control means for setting a repetitive recording area as an information recording area on the information recording / reproducing medium. Means, a storage area setting means for setting an information storage area as an area for storing data with respect to the information recording / reproducing medium, and a storage data specifying signal given from the storage specifying means, A disc recording / reproducing apparatus, comprising: a write-transfer means for moving the storage data corresponding to the designated signal from the repetitive recording area to the information storage area. 3. An information recording / reproducing medium, a recording / reproducing area control means for setting an information recording area or an information reproducing area for the information recording / reproducing medium, and a pre-recording / reproducing area controlling means. A pre-recording / reproducing area control means, wherein the pre-recording / reproducing area controlling means sets repetitive recording area setting means for setting a repetitive recording area as an information recording area on the information recording / reproducing medium; On the other hand, it has a storage area setting means for setting an information storage area as an information storage area, the control means, so that either one of the repeated recording area setting means, the storage area setting means is selected, A disk recording / reproducing apparatus having means for giving a selection signal to a recording / reproducing area control means. 4. A plurality of information recording / reproducing media, a recording / reproducing area control means for setting an information recording area or an information reproducing area for the information recording / reproducing medium, and a pre-recording / reproducing area controlling means. The recording / reproducing area control means is capable of repeatedly recording as an information recording area on the first information recording / reproducing medium, the control means comprising: When the designation signal of the data recorded on the first information recording / reproducing medium is given, the recorded data corresponding to the designation signal is recorded on the second information recording / reproducing medium from the first information recording medium. A disc recording / reproducing apparatus, comprising: 5. The disc recording / reproducing apparatus according to claim 4, wherein the first information recording / reproducing medium is a semiconductor memory, and the second information recording / reproducing medium is a disc.