JP2001344896A - Recording method of disk medium and reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium method of a disk medium which is capable of rapidly starting recording or reproducing after a start command for recording or reproducing is inputted. SOLUTION: This recording method of the disk medium has a step of recording the top portion of information continuous on an inputted time base in a region succeeding to the region which is the continuous and single region in the physically continuous first region of the disk medium and where the top portion of the already recorded information continuous on the other time base and a step of recording the portion succeeding to the top portion of the information continuous on the time base in a region exclusive of the first region described above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a recording apparatus for recording information (for example, video information or audio information) continuous on a time axis on a disk medium, a recorded disk medium,
The present invention also relates to a method and apparatus for reproducing a disk medium.

[0002]

2. Description of the Related Art In recent years, a disk recording / reproducing apparatus capable of recording information continuous on a time axis such as video information or audio information on a disk medium has been spreading to the market in recent years. Also, with the increase in the recording capacity of the disk medium, the disk recording / reproducing apparatus can record a plurality of pieces of video information, audio information, or other information (including information that is not continuous on a time axis). .

[0003] In the present specification and claims, the term "disk medium" includes any disk type recording medium such as an optical disk, a magnetic disk, or an optical disk, and refers to a disk such as a DVD. It includes a replaceable disk-type recording medium and a disk-type recording medium such as a hard disk that cannot replace a disk. Preferably, the disk device according to the present invention has a UDF (Universal Disk F).
(ormat) standard.

[0004] In the description and the claims, "continuous information on the time axis" means information continuous on the time axis such as video information (moving image) or audio information. For example, if reproduction and output of video information recorded on an optical disc medium are interrupted in the middle, there is a problem that nothing is displayed on the display during the interruption even if all subsequent video information is output with a delay. .
The information that is directly linked to the quality degradation due to the loss of continuity on the time axis is information that is continuous on the time axis.
Therefore, even if it is a continuous data string transmitted through the communication line, the database of the sales amount for each product (for example, a database generated by Microsoft Access (trade name)) and the like are "continuous on the time axis." Information ". Even if the transmission of information is interrupted on the way, by transmitting the remaining information after the interruption, the user can obtain complete information (for example, a complete data list).
This is because interruption of information on the way does not directly lead to poor quality.

[0005] A conventional recording method on a disk medium will be described with reference to FIGS. 1, 4, 7 and 8. FIG. 1 illustrates a hardware configuration of the disk recording / reproducing apparatus 11. The conventional disk recording / reproducing apparatus and the disk recording / reproducing apparatus of the present invention have the same hardware configuration (however, the software is different). FIG. 7 shows a recording flowchart of the system controller 21 of the conventional disk recording / reproducing apparatus. FIG. 8 schematically shows a recording pattern of a conventional disk medium on which information continuous on a plurality of time axes and information other than information continuous on the time axis are recorded. FIG. 4 shows a flowchart of the reproduction by the system control device 21 of the disk recording / reproducing device 11. The conventional disk recording and reproducing apparatus and the disk recording and reproducing apparatus of the present invention have the same reproduction flowchart.

[Description of Hardware Configuration of Disk Recording / Reproducing Apparatus 11 (FIG. 1)] The hardware configuration of the disk recording / reproducing apparatus 11 will be described with reference to FIG. FIG.
Shows a schematic hardware configuration of the disk recording / reproducing apparatus 11. The disk recording / reproducing device 11 includes a video display device 13 such as a CRT display or a liquid crystal display device, and a speaker 14. Further, digital information can be recorded on the replaceable optical disk medium 16 or digital information can be reproduced from the optical disk medium 16.
The disk medium may be a magnetic disk or a magneto-optical disk instead of the optical disk medium 16. Further, the optical disk medium 16 may not be replaceable. For example, a hard disk (HDD).

[0007] The disk recording / reproducing apparatus 11 has a system
Control device 21, infrared remote controller,
Command input device 22 such as a keyboard or operation panel, video / audio information boundary determination device 23, video / audio information coder 24, video / audio information decoder 25,
Light conversion device (referred to as “E / O conversion device”) 26, light /
An electric conversion device (referred to as an “O / E conversion device”) 27, a motor control device 28, and a motor 29 are provided. The command input device 22 commands the system control device 21 to start or end recording information on the optical disc medium.

[0008] The system control device 21 which has received the information recording start command from the command input device 22 transmits a recording command signal to the video / audio information coder 24 and the E / O converter 26. The video / audio information coder 24 and the E / O conversion device 26 that have received the recording command signal
The encoding and recording of the input video information and audio information 12 are started. Similarly, the system control device 21 receiving the information recording end command from the command input device 22
Transmits a recording end command signal to the video / audio information coder 24 and the E / O converter 26. The video / audio information coder 24 and the E /
The O-converter 26 receives the input video information and audio information 12
The encoding and recording of are ended.

When the system control device 21 receives the information reproduction start command from the command input device 22, the system control device 21 outputs a video information / audio information decoder 25 and an O / E conversion device 27.
To transmit a reproduction command signal. The video / audio information decoder 25 and the O / E converter 27 that have received the reproduction command signal decode the video and audio information reproduced from the optical disc medium 16 and output the video and audio information 15. Similarly, the system control device 21 having received the information reproduction end command from the command input device 22 outputs the video / audio information decoder 25 and the O / E conversion device 27.
To transmit a reproduction end command signal to the CPU. The video / audio information decoder 25 receiving the reproduction end command signal and the O / E
The conversion device 27 ends the reproduction of the signal from the optical disc medium and the decoding of the video information and the audio information.

The input video information or audio information (or video information and audio information) 12 includes a video information / audio information boundary determining device 23, a video information / audio information coder 24, a video display device 13, a speaker 14, a system It is input to the control device 21. Video / audio information coder 24
Encodes (codes) the input video information or audio information 12. The type of video information or audio information 12 that is continuous on the time axis as input information is arbitrary. Includes analog signals, digital signals, compressed digital signals, etc. The coding method is arbitrary. For example, it includes data compression coding such as MPEG2 and error correction coding such as Hamming coding.

The video information / audio information boundary determination device 23
The boundaries of the input video information are determined. For example, a horizontal synchronizing signal and a vertical synchronizing signal of the input NTSC signal (analog signal) are determined, and a clock synchronized with the horizontal synchronizing signal and the vertical synchronizing signal is converted into a video information / audio information coder 24.
To be transmitted. The video / audio information coder 24 generates encoded video / audio information blocks based on the clock.

For example, a PSC (Picture Star) of an inputted MPEG2 video signal (digital signal) is used.
t Code) and SSC (Slice Start)
Code), and transmits a clock synchronized with the PSC and SSC to the video / audio information coder 24.
The video / audio information coder 24 generates encoded video / audio information blocks based on the clock. The video information / audio information coder 24 has a buffer memory for the purpose of adjusting the input timing of the input information and the recording timing on the optical disc medium.
The system control device 21 extracts auxiliary information from the input video information and the like.

Other information (information other than information continuous on the time axis such as video information and audio information) 17 is input to the system control device 21 and encoded. E
The I / O converter 26 encodes the video / audio information output by the video / audio information coder 24, the auxiliary information output by the system controller, and other information 17 (compatible with the format to be recorded on the optical disc medium). ) And management information (information generated by the system control device 21) such as recording area information to be described later, and converts these electric signals into optical signals such as a laser, and Medium 16
To record.

The system control device 21 transmits motor drive command information to the motor control device 28. The motor driving device 28 drives the motor 29 in accordance with motor driving command information. The motor 29 typically includes a spindle motor for rotating an optical disk medium, and a voice coil motor for moving an optical pickup for irradiating laser light to a predetermined position.

At the time of reproduction, the O / E converter 27 reproduces information recorded on the optical disk medium 16 and converts an optical signal into an electric signal. The O / E converter 27 transmits the reproduced electric signal to the system controller 21 and the video / audio information decoder 25. The video / audio information decoder 25 decodes the reproduced video / audio information. The video information / audio information decoder 25 has a buffer memory for the purpose of adjusting the output timing of the output information and the reproduction timing from the optical disk medium.

The decoded video / audio information output from the video / audio information decoder 25 is output as output information 15 of video / audio information from an output terminal and transmitted to the video display device 13 and the speaker 14. Is done. The video display device 13 inputs the input video information 12 or the output video information 15 and displays the input video information 12 or the output video information 15 on a display.
Further, the system control device 21 inputs information recorded on the optical disk medium, converts the information list into bitmap format video information, and transmits the bitmap format video information to the video display device 13. The video display device 13 displays a list of the information on a display. The speaker 14 receives the input audio information 12 or the output audio information 15 and converts it into audio.

The system control device 21 inputs an electric signal other than video information and audio information reproduced from the optical disk medium. The system control device 21
Other information 17 is extracted from the electric signal, decoded, and output. Also, the system control device 21
Extract management information such as recording area information from electrical signals,
The disk recording / reproducing device 11 is controlled based on the management information.

[Explanation of Flowchart of Recording by Conventional Disc Recording / Reproducing Apparatus (FIG. 7)] Referring to FIG.
Will be described. Command input device 22
Check the input of the recording start command from, and if the recording start command is input, the flowchart of FIG. 7 is executed. In step 701, the motor 29 is driven to move the optical pickup to the innermost peripheral portion of the optical disk medium 16, and the recording area information 81 recorded in the innermost peripheral portion via the O / E converter 27 (FIG. 8). Play) and enter.

The recording area information 81 includes information such as identifiers of all information recorded on the disk medium 16 and information of the recording areas. The “information of the recording area” is, for example, the position of the recording start point, the position of the recording start point and the position of the recording end point, or the recording start point and the recording information amount. It is also possible to know the free area of the optical disk medium 16 based on the recorded information. Further, the recording area information 81 can include the name of the recording information or character information such as a simple heading. A name or a simple heading included in the information stream of the video information or the audio information can be extracted, and the name or the simple heading can be added to the recording area information 81. Further, the user can input a name or a simple heading from the command input device 22 such as a keyboard, and add the input name or the simple heading to the recording area information 81.

Next, recording area information 81 of the optical disk medium
, An empty area of the optical disk medium is extracted, and a new recording area is set in the empty area (step 7).
02). Next, new recording area information 81 including information on the set new recording area is recorded on the innermost peripheral portion of the optical disk medium 16 through the E / O converter 26 (step 703). Next, the motor 29 is driven to move the optical pickup to the start point of the newly set recording area (step 704).

Next, recording of input information such as video information and audio information on the optical disk medium 16 through the video information / audio information coder 24 and the E / O converter 26 is started (step 705). Next, it is checked whether or not the new recording area set in Step 702 is full (whether information has been completely recorded in the recording area) (Step 706). In step 706, if the recording area is full, the process returns to step 702. Step 7
At 02, a new recording area is set in a free area of the optical disc medium, and input information is recorded in the new recording area. When moving from the initially set recording area to a new recording area, the recording on the optical disk medium 16 is interrupted, but the video information and audio information input during that time are stored in the buffer memory in the video information / audio information coder 24. Is accumulated in Therefore, normally, part of the video information and audio information input during the interruption of the recording is not lost.

If it is determined in step 706 that the recording area is not full, recording on the optical disk medium is continued, and the flow advances to step 707. In step 707, it is checked whether or not a recording end command has been input from the command input device 22. If a recording end command has not been input in step 707, recording on the optical disk medium 16 is continued, and the process returns to step 706.

If it is determined in step 707 that the system control device 21 has input a recording end command from the command input device 22, the process proceeds to step 708. In step 708, the recording of the video information and the audio information ends. Next, in step 709, the motor 29 is driven to move the optical pickup to the innermost peripheral portion of the optical disk medium 16. The final recording area information 81 is recorded on the optical disk medium. This is the end of the process.

[Explanation of Flowchart of Reproduction by Disk Recording / Reproduction Apparatus (FIG. 4)] A reproduction flowchart of the system controller 21 of the conventional disk recording / reproduction apparatus will be described with reference to FIG. First, step 401
Then, the motor 29 is driven to move the optical pickup to the innermost peripheral portion of the optical disk medium 16 and the O / E converter 27
And reproduces and inputs the recording area information 81 recorded in the innermost peripheral portion. System control device 2
1 is a RAM built in the system control device 21
The storage area information 81 is stored. The system control device 21 generates a bitmap format video signal of a list of information recorded on the optical disc medium based on the recording area information 81 and transmits the video signal to the video display device 13.
The video display device 13 displays a list of the information on a display.

In step 402, the user selects video information and audio information to be reproduced from the list, and designates them with the command input device 22. Next, a command signal is transmitted from the system control device 21 to the motor control device 28, and the motor 29 is driven to move the optical pickup to the start point of the designated recording area of video information and audio information (step 403). When the optical pickup moves to the starting point, reproduction of video information and audio information is started (step 404). Next, it is checked whether or not the end point of the recording area being reproduced has been reached (step 405).

In step 405, if the end point has been reached, the process returns to step 403. In step 403, it is checked where the next information of the currently reproduced signal is recorded based on the recording area information 81 stored in the RAM, and the starting point of the recording area where the next information is recorded is determined. Move the optical pickup. When the optical pickup moves to the starting point, reproduction of video information and audio information is started again (step 404). While the optical pickup is moving, the reproduction from the optical disk medium is interrupted, but the output of the video information and the audio information does not usually interrupt because the video information / audio information decoder 25 has a buffer memory. .

In step 405, if the end point has not been reached, the process proceeds to step 406. Step 406
, It is checked whether the system control device 21 has input a reproduction end command from the command input device 22. In step 406, if the reproduction end command has not been input, the flow returns to step 405 to continue the reproduction.

In step 406, if a reproduction end command has been input, the flow advances to step 407. In step 407, the system control device 21 transmits a reproduction end command signal to the video / audio information decoder 25 and the O / E conversion device 27. The O / E converter 27 ends the reproduction from the optical disk medium, and the video / audio information decoder 25 ends the information decoding. Above,
The reproduction process is completed.

[Description of Recorded Conventional Disk Medium (FIG. 8)] FIG. 8 shows a recorded conventional disk medium 16.
3 schematically shows the recording pattern of the entire area of the above. The upper left end of the disk medium 16 corresponds to the start point of the innermost circumference of the disk medium having a disk shape. In FIG. 8, a track corresponds to a track (information is recorded on the track) on the disk medium which spirally spreads from the start point of the innermost circumference to the end point of the outermost circumference of the disk medium. The medium 16 extends to the right starting from the upper left end of the medium 16 and, when reaching the right end, goes down one step and extends from the left end to the right end. When it reaches the right end, it is 1 again
Step down and extend from the left end to the right end and repeat. The lower right end of the disk medium 16 is the end point, and corresponds to the outermost end point of the disk medium. The above is shown in FIGS.
The same applies to the disk medium on which the present invention is recorded.

In FIG. 8, in an area at the upper left end of the disk medium 16, identifiers of all information recorded on the disk medium 16 and recording area information 81 including information of the recording areas are recorded. . The information stream 1 continuous on the time axis is digital video information (moving image),
The information stream 2 continuous on the time axis is digital audio information. Digital video information 1 and digital audio information 2
Are successive blocks (1-1, 1) on a plurality of time axes by the video / audio information boundary determination device 23.
-2,1-3,2-1,2-2,2-3,3-1,3-
2, 3-3, etc.).

As a result, as shown in FIG. 8, each block (1-1,1-
, 2-1 and 2-2,...) Are recorded. In addition, information other than information continuous on the time axis (for example,
Words (files created by Microsoft Corporation) 8 and 9 which are word processor software are also recorded in an arbitrary area on the optical disk medium 16. FIG. 8 schematically shows a physical address of the optical disk medium and each recording area on the physical address.

Generally, a computer or the like has a logical address and a physical address. On a logical address (an apparent address on a software program), even though it appears that information input to a computer or the like is recorded in a continuous area having a certain information recording capacity, a physical address (an apparent address) appears. On an address actually recorded on a disc), information input to a computer or the like is often distributed and recorded in many small areas in units of segments. A computer (generally, a management section of a recording medium) has a conversion table of logical addresses and physical addresses.

[0033]

However, the disk recording / reproducing apparatus 11 actually starts recording information on the optical disk medium 16 unless the optical pickup has been moved to the start point of the recording area for recording or reproducing. Or, reproduction from the optical disk medium 16 cannot be started. In a conventional recording method on a disk medium, the optical pickup is located at the innermost circumference of the optical disk medium (recording area information is recorded on the innermost circumference). If it is located at the outermost circumference of 16, a considerable delay occurs between the time the user presses the recording start command button and the time the information is actually recorded on the optical disk.

Also, at the time of reproduction, video information (or audio information)
If the time required for the optical pickup to move from the first area where the information is recorded to the next area is longer than the time when the information recorded in the first area is output from the output terminal of the disk recording / reproducing apparatus 11, A serious problem occurs in that the reproduction of information is interrupted. In the conventional disk recording / reproducing apparatus, the determination of the recording area has not made a determination based on the viewpoint that the recording of the reproduction information is performed without interruption during reproduction.

If the user requests display of the first screen of each piece of video information in addition to the list of names or headings of the video information recorded on the optical disk, the conventional disk medium may be displayed. In the recording method, it takes a lot of time to reproduce and collect all the first screens of the respective pieces of video information that are separately recorded in the dispersed areas on the disk. Similarly, if the user requests display of a list of auxiliary information recorded on the optical disk, the conventional recording method on the disk medium requires that each of the information recorded separately in the distributed area on the disk be different. It takes a lot of time to reproduce and collect all the auxiliary information.

The present invention provides a disk recording / reproducing apparatus capable of starting recording or reproduction in a short time after inputting a recording or reproduction start command, a method for recording or reproducing on a disk medium, and a disk medium. The purpose is to do. Another object of the present invention is to provide a disk recording / reproducing apparatus that does not interrupt reproduction during reproduction, a method for recording or reproducing on a disk medium, and a disk medium. Further, the present invention provides a disk recording / reproducing apparatus, a recording / reproducing method for a disk medium, and a method capable of displaying in a short time a list of an initial portion of recorded information (for example, an audio signal of the first screen or the first few bars) It is intended to provide a disk medium. Still another object of the present invention is to provide a disk recording / reproducing apparatus, a method for recording / reproducing on / from a disk medium, and a disk medium capable of displaying a list of auxiliary information in a short time.

[0037]

According to a first aspect of the present invention, a head portion of information that is continuous on an input time axis is set in a physically continuous first area of a disk medium. Recording a continuous and single area in an area subsequent to the area in which the head portion of the information that is already recorded on another time axis is recorded; and information that is continuous on the time axis. Recording a part subsequent to the head part of the disc in an area other than the first area.

According to the recording method for a disk medium of the present invention, a first area having an arbitrary size is secured in the disk medium. When inputting information such as video information or audio information,
The first block of information is sequentially recorded in the first area. The first block of information is recorded in the first area, but the second and subsequent blocks of information are recorded in areas other than the first area, so that the first area is filled with one piece of information. It will not be. By securing the first area having a certain amount of information capacity, the first block of all video information and audio information recorded on the disk medium is
All exist continuously in the first area.

Preferably, the first area exists near a recording area for recording area information. Therefore, when the recording area of the input information is determined based on the recording area information during recording, or when the user selects and designates the output information (reproduction information) based on the recording area information at the time of reproduction, the optical pickup (or the magnetic pickup) is used. The time for moving the head or the like to the start point of the recording area (existing in the first area) is very short. The present invention has an effect that a recording method on a disk medium in which recording or reproduction can be started in a short time after a recording or reproduction start command is input can be realized. Further, according to the present invention, it is possible to realize a disk recording / reproducing apparatus capable of starting recording or reproduction in a short time after inputting a recording or reproduction start command.

In the disk medium recorded by the method for recording on a disk medium of the present invention, video information, audio information and the like recorded on the disk medium are all located continuously in the first area. Therefore, for example, when the user wants to see the first screen of each piece of video information recorded on the disk medium side by side, the first screen of each piece of video information can be reproduced in a short time. The present invention has an effect of realizing a recording method on a disk medium which can display a list of the first part (for example, an audio signal of the first screen or the first bar) of information recorded at the time of reproduction in a short time. .

The size of the first area (or information recording capacity)
Is optional. The recording area of the recording area information and the auxiliary information may be in the first area, or may be in an area other than the first area. Also, auxiliary information such as each video information and each audio information may be collected and the collected auxiliary information may be recorded in one recording area. Related auxiliary information may be recorded.

The information amount of the "head of continuous information on the time axis" is arbitrary. In general, the head portion is, for example, a block (single or plural blocks) of information separated by a boundary determined by the video information / audio information boundary determining unit. The starting point of the “continuous and single area following the leading portion of the information already recorded on another time axis that is continuous” preferably immediately follows the ending point of the leading portion without leaving an unnecessary gap. However, the present invention is not limited to this. For example, in a disk medium on which information is recorded in units of segments, if the information amount of the information to be recorded is not an integral multiple of the information amount of the segment, the end portion of the segment is substantially a free area.

"Recording in the area subsequent to the area where the head portion of the information already recorded on another time axis is recorded" is recorded in order from the start point of the first area. This means recording in an area after a recording area for single or multiple video signals or audio signals, but, for example, recording another video signal or the like in a recording area for any unnecessary video signal or the like. It does not exclude that. Therefore, a new signal may be recorded in an area after a single or a plurality of video signals or audio signals recorded in order from the start point of the first area, and if other requirements are satisfied, the present invention may be implemented. Belongs to the technical scope of The “continuous and single area” in the first area means that one video signal or audio signal or the like is recorded in one area in the first area, This means that it is not divided and recorded in a plurality of middle areas.

If the first area becomes full and the first block of new video information cannot be recorded in the first area, where is the first block of the new video information recorded? Is optional. For example, the first block of the new video information or the like may be recorded in an area other than the first area, but this does not mean that the recording method does not belong to the technical scope of the present invention. This is because a recording method when the first area is full is a recording method in an exceptional case. Therefore, if the first area is provided (the name is arbitrary) and a recording method that satisfies the requirements of the present invention is implemented when the first area is not full, the technical scope of the present invention must be satisfied. Belong.

According to a second aspect of the present invention, there is provided a step of reading position information including an identifier of information recorded on a disk medium and information of a recording area, and a step of reading the start of continuous information on an input time axis. A position information reading step of determining an area for recording a portion based on the position information,
An information recording step of recording a head portion of the continuous information on the time axis on a disk medium by the method of claim 1;
Adding an identifier of the information recorded in the information recording step and information of a recording area to the position information, and recording the added position information in an area subsequent to the information recorded in the information recording step. This is a method for recording on a disk medium.

In the method of recording on a disk medium according to the present invention, the recording area of the recording area information is in the first area, and the leading part of the information continuous on one or a plurality of time axes is included. It is at the position following the last of the recorded area. Therefore, when an optical pickup (or a magnetic head or the like) is positioned in the recording area of the recording area information, the recording area information is input, and the recording area of the new input information is determined, the recording area information is recorded. Since the recording of the input information is started from the area which has been set, the optical pickup (or the magnetic head or the like) is already almost at the starting point of recording.

Therefore, during recording, the time for moving the optical pickup (or magnetic head or the like) to the start point of the recording area (existing in the first area) is very short. The present invention has an effect that a recording method on a disk medium in which recording or reproduction can be started in a short time after a recording or reproduction start command is input can be realized. Further, according to the present invention, it is possible to realize a disk recording / reproducing apparatus capable of starting recording or reproduction in a short time after inputting a recording or reproduction start command.

The invention according to claim 3 of the present invention is characterized in that the time required to output the information amount of the leading portion of the continuous information on the time axis is longer than the full seek time of the disk medium. A recording method on a disk medium according to claim 1 or 2.

In the method of recording on a disk medium according to the present invention, information such as video information continuous on the time axis must be 2
The data is divided into the above areas and recorded (the first area and the area other than the first area). In the present invention, the amount of information at the head portion recorded in the first area is the full seek time of the optical pickup or the like (the time from when the optical pickup accesses the innermost position to the outermost position of the disk medium). Therefore, during playback, the reproduced video information to be output is not interrupted while the optical pickup or the like moves from the recording area of the first block of information to the recording area of the second block of information. The present invention has an effect that it is possible to realize a recording method on a disk medium in which the output of reproduction information is not interrupted during reproduction.

According to a fourth aspect of the present invention, information other than continuous information on a time axis is recorded in an area other than the first area.
A recording method on a disk medium according to any one of the claims.

In the method of recording on a disk medium according to the present invention, a first area (recording area information is sometimes recorded in the first area) which is a dedicated recording area for video information and audio information is used. Secure. The present invention has an effect that a recording method on a disk medium in which recording or reproduction can be started in a short time after a recording or reproduction start command is input can be realized. Further, according to the present invention, it is possible to realize a disk recording / reproducing apparatus capable of starting recording or reproduction in a short time after inputting a recording or reproduction start command.

Further, the present invention realizes a method of recording on a disk medium capable of displaying in a short time a list of an initial portion (for example, an audio signal of a first screen or a first bar) of information recorded at the time of reproduction. Has the effect of being able to.

According to a fifth aspect of the present invention, the step of reading auxiliary information relating to information continuous on the time axis recorded in the first area, and the step of reading auxiliary information relating to information continuous on the input time axis Generating information, adding the generated auxiliary information to the read auxiliary information, and recording the added auxiliary information in the first area. A method for recording on a disk medium according to any one of claims 1 to 4, characterized in that:

According to the present invention, auxiliary information such as video information and audio information recorded in the first area is recorded in one area on a disk medium. In a conventional recording method on a disk medium, auxiliary information such as video information is
Since each of the video information and the like is individually stored in the recording area, if a list of all the auxiliary information such as the video information is to be displayed on the display, it takes much time to collect the auxiliary information. In the method of recording on a disk medium according to the present invention, if a list of auxiliary information such as video information recorded in the first area is to be displayed on a display, 1
The auxiliary information recorded in the individual areas may be read from the disk medium and displayed. The present invention has an effect that a method of recording on a disk medium in which a list of auxiliary information can be easily obtained can be realized.

"Auxiliary information" refers to information other than the video signal of video information and information other than the audio signal of audio information. The auxiliary information includes history information of the optical disk medium, attribute information such as types of recorded video information and audio information, size information of the auxiliary information itself, and update information. The auxiliary information recorded by the method of recording on a disk medium according to the present invention may be auxiliary information relating only to the head of video information or the like recorded in the first area. Further, the “auxiliary information” recorded collectively in one recording area may include all auxiliary information attached to the input video information or the like, or may include only some auxiliary information.

The invention according to claim 6 of the present invention is characterized in that the continuous information on the time axis includes either video information or audio information. A recording method on a disk medium according to any one of the claims.

According to the present invention, it is possible to realize a recording method on a disk medium capable of starting recording or reproduction of video information or audio information in a short time after inputting a recording or reproduction start command. Has an action. The present invention
The effect of realizing a method for recording video information or audio information on a disk medium, which can display a list of the first part of the information recorded during reproduction (eg, the audio signal of the first screen or the first bar) in a short time. Having. The present invention
This has the effect of realizing a method of recording video information or audio information on a disk medium without interruption of reproduction information output during reproduction.

According to a seventh aspect of the present invention, there is provided a disk medium on which information is recorded by the method according to any one of the first to sixth aspects.

According to the present invention, by mounting the disk medium of the present invention in a disk reproducing apparatus, a disk medium capable of starting reproduction of video information or the like in a short time after inputting a reproduction start command is realized. Has the effect of being able to According to the present invention, when a disk medium of the present invention is mounted on a disk reproducing apparatus, a first part (for example, an audio signal of a first screen or a first bar) of information recorded at the time of reproduction can be displayed as a list in a short time. It has an effect that a disk medium for information or the like can be realized.
The present invention has an effect that by mounting the disk medium of the present invention in a disk reproducing apparatus, it is possible to realize a disk medium of video information or the like which does not interrupt reproduction information output during reproduction.

According to an eighth aspect of the present invention, there is provided a method for reproducing continuous information on a time axis recorded on the disk medium according to the seventh aspect, and outputting the reproduced information. This is a method for reproducing a disk medium.

The present invention has an effect that a method of reproducing a disk medium in which reproduction of video information or the like can be started in a short time after a reproduction start command is input can be realized. The present invention relates to the first part of information recorded at the time of reproduction (for example, the first screen or the first bar audio signal).
Has a function of realizing a method of reproducing a disk medium such as video information which can display a list in a short time.
The present invention has an effect that it is possible to realize a method for reproducing a disk medium such as video information without interrupting the output of reproduction information during reproduction.

[0062]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention. Embodiment 1 FIGS. 1 to 6 illustrate a disk recording / reproducing apparatus, a recording method and a reproducing method of a disk medium, and a disk medium according to Embodiment 1 of the present invention. FIG. 1 illustrates a hardware configuration of the disk recording / reproducing apparatus 11. As described above, the conventional disk recording and reproducing apparatus and the disk recording and reproducing apparatus of the present invention have the same hardware configuration, and FIG. 1 has already been described in the section of the conventional example. The disk recording / reproducing apparatus according to the present embodiment is an apparatus that records and reproduces video information and audio information such as a satellite broadcast television program on an optical disk medium.

FIGS. 2 and 3 show a recording flowchart of the system controller 21 of the disk recording / reproducing apparatus of the present invention. FIG. 4 shows a flowchart of the reproduction by the system control device 21 of the disk recording / reproducing device 11. As described above, the conventional disk recording / reproducing apparatus and the disk recording / reproducing apparatus of the present invention have the same reproduction flowchart, and FIG. 4 has already been described in the section of the conventional example (however, The example recording area information 81 is:
It is replaced by the recording area information 52 of the embodiment. ). FIG.
5 schematically shows a recording pattern of the disk medium of the present invention in which information continuous on a plurality of time axes and information other than information continuous on the time axis are recorded. FIG. 6 schematically shows a change in the recording pattern of the disk medium of the present invention when continuous information is recorded on a new time axis.

[Explanation of Recording Flowchart of Disc Recording and Reproducing Apparatus of the Present Invention (FIGS. 2 and 3)] FIGS. 2 and 3
The recording flowchart of the system control device 21 of the disk recording / reproducing device of the present invention will be described based on the above (refer also to FIGS. 1 and 5 as appropriate). The input of the recording start command from the command input device 22 is checked, and if the recording start command is input, the flowcharts of FIGS. 2 and 3 are executed. In step 201, the motor 29 is driven to move the optical pickup to the innermost peripheral portion of the optical disk medium 16, and the address information 54 of the recording area information recorded in the innermost peripheral portion via the O / E converter 27.
Play (Fig. 5) and input.

Next, the motor 29 is driven again to move the optical pickup to the address indicated by the address information 54, and the recording area information 52 (FIG. 5) recorded at the address via the O / E converter 27 and Recording area information 5
The auxiliary information 53 recorded in the area following the area in which 2 is recorded is reproduced and input. The input recording area information 52 and auxiliary information 53 are stored in the RAM of the system control device 21. The recording areas of the recording area information 52 and the auxiliary information 53 are in the first area 51, and are the recording areas 1-1 and 2- at the beginning of information (for example, video information or audio information) continuous on the time axis. 1, 3-1,
It is provided continuously after 4-1 and 5-1 (FIG. 5).

The recording area information 52 includes information such as identifiers of all information recorded on the disk medium 16 and information on the recording areas. The “information of the recording area” is, for example, the position of the recording start point, the position of the recording start point and the position of the recording end point, or the recording start point and the recording information amount. It is also possible to know the free area of the optical disk medium 16 based on the recorded information. The recording area information can include the name of the recording information or character information such as a simple heading. A name or a simple heading included in the information stream of the video information or the audio information can be extracted, and the name or the simple heading can be added to the recording area information. In addition, the user operates a command input device 2 such as a keyboard.
2, a name or a simple heading can be input, and the input name or the simple heading can be added to the recording area information.

The auxiliary information 53 is set to User Defined.
Data. The auxiliary information 53 includes history information of the usage state (recording pattern) of the optical disk medium up to the present, attribute information such as the type of an information stream of recorded video information and audio information, information of the size of the auxiliary information itself, and update information. And so on.

Next, in step 202, based on the recording area information of the optical disk medium, the information (for example, video information or audio information) that is already recorded in the first area 51 and is continuous on another time axis. A continuous single new recording area following the head is set. That is, the recording area such as the recording area information 52 is set as the recording area at the head of new video information and the like. Recording area information 52
Is the same as the start address of the recording area of the recording area information 52 (or the recording area of the auxiliary information 53). The end address of the head partial recording area of the video information or the like does not always match. That is, the sizes of these regions need not be the same.

The first area 51 is a physically continuous dedicated area which is set for the purpose of recording only the head part of information continuous on the time axis, auxiliary information and recording area information. The size of the first region 51 is arbitrary. Where the first area 51 is set on the optical disc medium 16 is arbitrary. Preferably, the first area 51 is
It is provided near the area of the optical disk medium 16 where the address information 54 is recorded. In the embodiment, the recording area of the address information 54 is provided in a fixed area from the start point of the innermost circumference of the optical disc medium 16, and the first area 51 is provided in the area following the address information 54. This allows
The moving distance of the optical pickup can be minimized, and the waiting time from receiving a recording or reproducing command of video information or the like to actually starting recording or the like of video information or the like can be minimized. In this embodiment, the first region 51 is made of Co.
It is referred to as ntigous Data Area (CDA).

Next, at step 203, the motor 2
9 to move the optical pickup to the start address (start point) of the recording area at the start of new video information and the like,
Recording of video information and audio information is started. Step 20
Since the optical pickup is located near the end of the recording area or the like of the recording area information 52 at the time point when the processing of Step 2 is completed, the optical pickup moves to the start address of the recording area of the new video information or the like (the original recording area information 52 The time required to move to the head address of the recording area) is extremely short. The input video information and audio information 12 are encoded by a video information / audio information coder 24 and recorded on the optical disk medium 16 through an E / O converter 26.

Next, in step 204, the amount of information recorded in the new recording area of the first area 51 is the minimum information amount, that is, the amount of information that the disc recording / reproducing apparatus outputs from the output terminal during the full seek time ( It is checked whether it is larger than the information amount of the video information or the like 15). The minimum amount of information is
Although it may be determined based on the full seek time of the disk recording / reproducing apparatus 11, it is preferable that the full seek time of the maximum value determined by, for example, a standard (any disk recording / reproducing apparatus conforming to the standard, It must be shorter than the maximum value). Thereby, even when the optical disk medium recorded by the optical disk recording / reproducing apparatus 11 is reproduced by another disk reproducing apparatus, seamless reproduction is guaranteed.

In step 204, if the amount of information to be recorded in the new recording area of the first area 51 is shorter than the amount of information to be output during the full seek time, the process returns to step 204 and the information is provided in the first area 51. The recording in the new recording area is continued. In step 204, if the amount of information recorded in the new recording area of the first area 51 is longer than the amount of information output during the full seek time, then the video information etc. determined by the video information / audio information boundary determination device 24 The recording in the new recording area of the first area 51 is continued until the boundary of the video information is reached.
To step 301.

Therefore, the amount of information recorded in the new recording area in the first area 51 is k (k is an integer of 1 or more).
(A block of information delimited by the boundary of the video information and the like determined by the video information / audio information boundary determination device 24), and the following equation is satisfied. The amount of information recorded in the new recording area> the transfer rate of the output information × the full seek time The information recorded in the new recording area in the first area 51 constitutes the head of video information and the like.
When all the processes in the flowchart of FIG. 2 are completed,
An empty area still remains in the first area 51. Therefore, when recording of new video information or the like is started, the head portion of the new video information or the like is set in the first area 51.
Can be recorded after the new recording area (recording area at the beginning of new video information or the like). Note that the free area of the first area 51 is temporarily allocated to the area (Padding).
Area).

Preferably, the area of the first area 51 in which the head portion of the video information and the like is recorded is, for example,
One short allocation descriptor “allocated and recorded”, which is defined in the rsal Disk Format (UDF) standard, is provided. Also, P
The adding Area (free area) is, for example, UDF
Another short assignment descriptor defined in the standard, which is “assigned but unrecorded”, is provided.

The flowchart of FIG. 3 will be described. In step 204, if the amount of information recorded in the new recording area of the first area 51 is longer than the amount of information output during the full seek time, the process proceeds to step 301, where the recording area stored in the RAM of the system control device 21 is stored. Information 5
2, a new recording area is set in a free area of the area 55 other than the first area (step 301). Next, in step 302, new recording area information 52 is recorded in the area following the new recording area of the first area 51 through the E / O conversion device 26, and a new recording area information is recorded in a subsequent area. The auxiliary information 53 is recorded. The new recording area information 52 is stored in the R
The information of the recording area such as the new video information is added to the recording area information 52 stored in the AM, and the new auxiliary information 53 is stored in the RA of the system control device 21.
The supplementary information such as the new video information is added to the supplementary information 53 stored in M.

Next, the motor 29 is driven to move the optical pickup to the start point of a new recording area other than the first area 55 (step 303). First set first
When moving from the recording area of the area 51 to the new recording area of the area 55 other than the first area, the recording on the optical disk medium 16 is interrupted. -Stored in the buffer memory in the voice information coder 24. Therefore, normally, part of the video information and audio information input during the interruption of the recording is not lost. Next, from the start point of the new recording area of the area 55 other than the first area, recording of video information blocks following the block of video information recorded in the first area 51 is started (step 304). ).

Next, it is checked whether or not the new recording area of the area 55 other than the newly set first area is full (whether information has been completely recorded in the recording area) (step 305). In step 305, if the recording area is full, the process returns to step 301. In step 301, a new recording area is set in a free area of the area 55 other than the first area, and input information is recorded in the new recording area. Also at this time, when the optical pickup moves to a new recording area, the recording on the optical disk medium 16 is interrupted, but the video information and audio information input during that time are stored in the buffer memory in the video information / audio information coder 24. Is accumulated in Therefore, normally, a part of the video information and the audio information input during the suspension of the previous recording is not lost.

If it is determined in step 305 that the recording area is not full, the recording on the optical disk medium is continued, and the flow advances to step 306. In step 306, it is checked whether or not a recording end command has been input from the command input device 22. If a recording end command has not been input in step 306, recording on the optical disk medium 16 is continued, and the process returns to step 305.

If a recording end command has been input in step 306, the flow advances to step 307. Step 3
At 07, the recording of the video information and the audio information ends. Next, in step 308, the motor 29 is driven to move the optical pickup to an area in the first area 51 where the recording area information 52 is recorded. The final recording area information is recorded on the optical disk medium. This is the end of the process.

In another embodiment, the optical disk medium 1
6, the address information 5 of the recording area information 52
4, the recording area information 52 itself is recorded. Further, the system control device 21 does not extract the auxiliary information and collectively record it in one recording area. Therefore, in the other embodiment, the first
In the area 51, only the leading portion of information that is continuous on the time axis is recorded.

[Description of Recording Pattern of Disk Medium (FIG. 5)] FIG. 5 shows a recording pattern of an optical disk medium on which information is recorded by the apparatus of FIG. 1 in accordance with the flowcharts of FIGS. In the area starting from the start point of the innermost circumference of the optical disk medium 16, the address information 54 of the recording area information 52 is stored.
Is recorded. Address information 5 of recording area information 52
A first area 51 is set after the fourth recording area.
From the start point of the first area 51, head portions 1-1 and the like of video information, audio information, and the like are recorded in order.

The information stream 1 of the video information is divided into blocks at the boundaries of the information by the video information / audio information boundary determination device 23 and encoded by the video information / audio information coder 24. Also, as described above, the size of the block to be recorded in the first area is determined in consideration of the amount of information output during the full seek time. As a result, the information stream 1 is divided into 1-1, 1-2, and 1-3. The block 1-1, which is the head of the information stream 1 of the video information, is recorded in an area starting from the starting point of the first area 51. Block 1-2 following block 1-1
And 1-3 are recorded in a recording area provided in an area 55 other than the first area.

The information stream 2 of audio information is divided into blocks at information boundaries by the video / audio information boundary determination device 23 and encoded by the video / audio information coder 24. Also, as described above, the size of the block to be recorded in the first area is determined in consideration of the amount of information output during the full seek time. As a result, the information stream 2 is divided into 2-1 and 2-2. Block 2-1 which is the head of information stream 2 of audio information
Is the first part 1- of the information stream 1 in the first area 51.
It is recorded in the area immediately following 1. Block 2-
The block 2-2 following 1 is an area 55 other than the first area.
Is recorded in a recording area provided in.

Similarly, the information stream 3 is divided into blocks 3-1 and 3-2, and the leading block 3-3 is divided into blocks 3-1 and 3-2.
1 is recorded in the area immediately following the area where the block 2-1 of the first area 51 is recorded, and the subsequent block 3
-2 is recorded in a recording area provided in the area 55 other than the first area. Similarly, the information streams 4 and 5 are divided into blocks 4-1 4-2 and 4
-3 and blocks 5-1 5-2, and 5-3, and blocks 4-1 and 5-1 are recorded in an area following the recording area of the block 3-1 in the first area 51. Area 55 other than the area 55, other blocks (4-2, 4-3,
5-2 and 5-3) are recorded. The recording area information 52 is recorded in an area immediately after the area where the head portion 1-1 of each information stream in the first area 51 is recorded, and the auxiliary information 53 is recorded in an area subsequent thereto.

Information 8 and 9 other than information continuous on the time axis such as video information and audio information (for example, a database describing details of the sales amount) are recorded in an area 55 other than the first area. You.

[Explanation of Change in Recording Pattern of Disk Medium when New Information is Recorded (FIG. 6)] FIG. 6 shows how the recording pattern of the disk medium changes when new information is recorded. This is schematically illustrated. FIG. 6A shows a current recording pattern of the optical disk medium. The address information 54 of the recording area information 52 is recorded in an area starting from the start point of the innermost circumference of the optical disc medium 16. In the first area 51 provided after the recording area of the address information 54 of the recording area information 52, a block 1-1 at the head of the information stream 1 and a block 2-1 at the head of the information stream 2 are recorded. ing. Blocks 1-1 and 2-
In the area immediately after the area where 1 is recorded, recording area information 5
2 is recorded, and further, auxiliary information 53 is recorded in the subsequent area.

Block 1 at the beginning of information stream 1
The block 1-2 following -1 is an area 5 other than the first area.
5 is recorded in the first area. Similarly, a block 2- following the block 2-1 at the head of the information stream 2
2 is recorded in an area 55 other than the first area, in an area following the recording area of the block 1-2. First area 51
And the area 55 other than the first area has an unrecorded area.

FIG. 6B shows a recording pattern of the optical disk medium after the recording of the new information stream 3 in FIG. 6A. In the area starting from the start point of the innermost circumference of the optical disk medium 16, new address information 54 of the recording area information is recorded. Immediately after the area where the block 1-1 at the head of the information stream 1 and the block 2-1 at the head of the information stream 2 in the first area 51 are recorded,
A block 3-1 at the head of the information stream 3 is recorded. The recording area information 52 is recorded in an area immediately after the area in which the block 3-1 is recorded, and the auxiliary information 53 is recorded in an area subsequent thereto. Information stream 3
The block 3-2 following the block 3-1 at the head of
It is recorded in an area subsequent to the recording area of the block 2-2 in the area 55 other than the first area.

The disk recording / reproducing apparatus 11 of the present invention has the same reproduction flowchart as that of the conventional disk recording / reproducing apparatus (FIG. 4, except that FIG. 4).
The recording area information 81 of the conventional example is the recording area information 5 of the embodiment.
Replaced with 2. Since the recording pattern of the disk medium of the present invention is different from the recording pattern of the conventional disk medium, the following effects are obtained during reproduction, which are different from those of the conventional disk recording / reproducing apparatus.

[0090]

According to the recording method for a disk medium of the present invention, the recording area of the input information is determined based on the recording area information at the time of recording (or when the disk medium recorded by the method of the present invention is reproduced). When the user selects and designates output information (playback information) based on the recording area information), the optical pickup starts the recording area for recording the input information or the starting point of the recording area for the reproduction information (exists in the first area 51). .) The time to go is very short. ADVANTAGE OF THE INVENTION According to this invention, the advantageous effect that the recording method on a disk medium etc. which can start recording or reproduction | regeneration in a short time after inputting the recording or reproduction | regeneration start command can be implemented is acquired. .

Further, in a disk medium recorded by the method for recording on a disk medium of the present invention, all of the recorded video information, audio information and the like are continuously located in the first area 51. For example, when playing back the optical disk medium of the present invention shown in FIG. -1, 2-1,
3-1, 4-1 and 5-1 are successively read out, and a video at the head of each video information is extracted therefrom (information 1, 2, 3, 4 and 5 are all video information). .).

The information 1-1, 2-1 and 3-1 of the head part,
Since 4-1 and 5-1 are recorded in a continuous area, the seek operation of the optical pickup only needs to access the start point of the recording area of the block 1-1. Therefore,
The head block of the video signal recorded on the optical disk medium 16 can be read out in a short time, and a list of videos of the head part can be generated in a short time. Generating the “list of videos at the beginning of the video signal”
For example, the first image of a moving image is displayed as a thumbnail using a still image in an image browser or the like. Therefore, for example, when the user wants to see the first screen of each piece of video information recorded on the disk medium side by side, the first screen of each piece of video information can be reproduced in a short time. According to the present invention, it is possible to realize a recording method on a disk medium capable of displaying a list of the first part (for example, the first screen or the audio signal of the first few bars) of information recorded at the time of reproduction in a short time. The advantageous effect described above can be obtained.

In the disk medium recorded by the method of recording on a disk medium of the present invention, since attribute information such as video information and audio information is recorded in one recording area, auxiliary information such as video information is recorded. , The auxiliary information such as video information can be read from the disk medium in a short time. According to the present invention, there is obtained an advantageous effect that it is possible to realize a recording method on a disk medium or the like that can display a list of auxiliary information in a short time during reproduction.

In the recording method for a disk medium according to the present invention, the recording area of the recording area information is the first area 51.
And at the position following the end of the recorded area at the beginning of the continuous information on one or more time axes. ADVANTAGE OF THE INVENTION According to this invention, the advantageous effect that the recording method on a disk medium etc. which can start recording or reproduction | regeneration in a short time after inputting the recording or reproduction | regeneration start command can be implemented is acquired. .

According to the present invention, there is obtained an advantageous effect that it is possible to realize a method of recording information on a disk medium without interruption of output of reproduction information during reproduction.

According to the present invention, by mounting the disk medium of the present invention on a disk reproducing apparatus, a disk medium capable of starting reproduction of video information or the like in a short time after a reproduction start command is input. An advantageous effect that it can be realized is obtained. According to the present invention, by mounting the disc medium of the present invention on a disc reproducing apparatus, the first part (for example, the first screen or the audio signal of the first few bars) of information recorded at the time of reproduction can be listed in a short time. An advantageous effect that a disk medium such as video information that can be displayed can be realized is obtained. According to the present invention, by mounting the disk medium of the present invention in a disk reproducing apparatus, it is possible to realize a disk medium such as video information that can display a list of auxiliary information such as video information recorded during reproduction in a short time. The advantageous effect that can be obtained is obtained. According to the present invention, by mounting the disk medium of the present invention in a disk reproducing apparatus, an advantageous effect is obtained that a disk medium such as video information can be realized in which output of reproduction information is not interrupted during reproduction. Can be

According to the present invention, there is obtained an advantageous effect that it is possible to realize a disk medium reproducing method capable of starting reproduction of video information or the like in a short time after inputting a reproduction start command. Can be According to the present invention, it is possible to realize a method of reproducing a disk medium such as video information in which a first portion of information recorded at the time of reproduction (for example, a first screen or an audio signal of the first few bars) can be displayed in a short list. Is obtained. According to the present invention, there is obtained an advantageous effect that it is possible to realize a method of reproducing a disk medium such as video information which can display a list of auxiliary information such as video information recorded at the time of reproduction in a short time. According to the present invention, there is obtained an advantageous effect that it is possible to realize a method of reproducing a disk medium such as video information without interruption of reproduction information output during reproduction.

Further, according to the present invention, it is possible to realize a recording method for a disk medium in which a user does not need to manually determine an information writing area and automatically determines a recording area based on input information. The advantageous effect that can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a hardware configuration of a disk recording / reproducing apparatus.

FIG. 2 is a recording flowchart of the disk recording / reproducing apparatus according to the embodiment of the present invention.

FIG. 3 is a recording flowchart of the disk recording / reproducing apparatus according to the embodiment of the present invention.

FIG. 4 is a flowchart of reproduction of the disk recording / reproducing apparatus according to the embodiment of the present invention.

FIG. 5 is a schematic diagram of a recording pattern of a disk medium according to the embodiment of the present invention.

FIG. 6 is a schematic diagram showing a change in a recording pattern of the disk medium according to the embodiment of the present invention.

FIG. 7 is a recording flowchart of a conventional disk recording / reproducing apparatus.

FIG. 8 is a schematic diagram of a recording pattern of a conventional disk medium.

[Explanation of symbols]

1, 2 Information stream of video information or audio information 8, 9 Information other than information continuous on time axis 11 Disc recording / reproducing device 12 Video information or audio information as input information 13 Video display device 14 Speaker 15 Output information Video information or audio information 16 Optical disk medium 17 Other information (information other than information continuous on the time axis) 21 System control device 22 Command input device 23 Video information / audio information boundary determination device 24 Video information / audio information coder 25 Video Information / voice information decoder 26 Electric / optical converter (E / O converter) 27 Optical / electric converter (O / E converter) 28 Motor controller 29 Motor 51 First area 52, 81 Recording area information 53 Auxiliary Information 54 Address information of recording area information 55 Area other than first area

Claims (8)

[Claims] 1. A head portion of information which is continuous on an input time axis is a continuous and single area in a physically continuous first area of a disk medium, and which is another area which has already been recorded. A step of recording in a region subsequent to the region where the head portion of the continuous information on the time axis is recorded, and a portion subsequent to the head portion of the continuous information on the time axis, other than the first region. Recording in an area, and a method for recording on a disk medium. A step of reading position information including an identifier of information recorded on a disk medium and information of a recording area; and setting an area for recording a head portion of continuous information on an input time axis as the position information. A step of reading position information determined based on the information; an information recording step of recording a head portion of the continuous information on the time axis on a disk medium by the method according to claim 1; an identifier and recording of the information recorded in the information recording step Recording information on a disk medium, comprising: adding area information to the position information; and recording the added position information in an area subsequent to the information recorded in the information recording step. 3. A time required for outputting an information amount of a leading portion of the continuous information on the time axis is longer than a full seek time of the disk medium.
A method for recording on a disk medium according to claim 2. 4. Information other than continuous information on a time axis is
4. The recording method according to claim 1, wherein recording is performed in an area other than the first area. 5. A step of reading auxiliary information related to continuous information on a time axis recorded in the first area; a step of generating auxiliary information related to continuous information on an input time axis; The method according to claim 1, further comprising: adding the auxiliary information to the read auxiliary information; and recording the added auxiliary information in the first area. A method for recording on a disk medium according to any one of the preceding claims. 6. The disk according to claim 1, wherein the information continuous on the time axis includes any one of video information and audio information. How to record on the medium. 7. A disk medium on which information is recorded by the method according to claim 1. Description: 8. A method for reproducing a disk medium, comprising a step of reproducing continuous information on a time axis recorded on the disk medium according to claim 7, and outputting the reproduced information.