JPH11296996A - Information recording method for information recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the control of an information recording position from being complicated even if information is recorded in an information recordable recording medium such as DVD-RAM with the least unit equal to that of an information recording medium exclusive for reproduction such as CD-ROM, DVD-ROM. SOLUTION: A recording and reproducing control section 4 controls recording and reproducing section 2, makes information quantity previously decided for an information recording medium 1 as the least unit of processing: sector, and as a control unit: ECC block with which information is controlled by collecting plural the least unit: sector, when information is recorded with a recording unit of an integral multiple of the control unit: ECC block, information is recorded continuously without keeping interval for each ECC block, while the last and least unit of a recording unit: packet is allotted to a buffer region: link section for absorbing positioning accuracy on the information recording medium 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a CD-RW, D
A rewritable information recording medium such as a VD-RAM,
And an information recording method for an information recording medium on which information can be recorded, such as a CD-R and a DVD-R.

[0002]

2. Description of the Related Art Information rewritable information recording media such as CD-RW and DVD-RAM, and CD-R and DVD-RAM
In an information recording medium on which information such as R can be recorded, a predetermined amount of information is used as a minimum unit of processing (referred to as a "sector"), and a plurality of such minimum units are collected to reproduce information (" The information is recorded for each reproduction unit, and between each reproduction unit (boundary portion).
Needed to provide a gap region. This gap area is a buffer area for preventing double writing due to a write positioning error or the like when recording information.

[0003] An information recording medium such as a CD-ROM or a DVD-ROM capable of only reproducing information (referred to as a "stamp recording medium") uses a predetermined amount of information as a minimum unit of processing ("sector"). ), And a plurality of the minimum units are collected as a reproduction unit (referred to as an “ECC block”) for reproducing information, and information is continuously recorded without an interval for each reproduction unit. .

A conventional information recording / reproducing apparatus reproduces information from an information recording medium on which the information can be reproduced, and records and reproduces information on and from an information recording medium on which the information can be rewritten. In order to enable reproduction, the minimum unit at the head of each recording unit is used as a gap area.

FIG. 3 is a diagram showing an example of a format for recording and reproducing information on a conventional information recording medium. CD
In a stamp recording medium such as a ROM or a DVD-ROM, as shown in FIG. 3A, the minimum unit (management unit) at the time of recording and reproducing information: information is continuously recorded in ECC blocks n to n + 4. And no gap region is provided. In the DVD-ROM, the ECC block is composed of 16 sectors, and one sector is composed of 2 Kbytes of user data.

In the same format as such a stamp recording medium, CD-R, CD-RW, DVD-R,
When information is recorded on an information recording medium such as a VD-RAM,
As shown in FIG. 3B, for example, the ECC of the recording area
When recording is performed at a different time between blocks n + 1 and n + 2, the first sector of the management unit (minimum unit during recording and reproduction) of the ECC block n + 2 is used as a gap area (referred to as a “link section”). Was. The link portion shown by oblique lines in FIG. 3B is enlarged and shown in FIG. 3C.

[0007]

However, when the first sector of the ECC block of the information recording medium is allocated to the gap area as in the information recording method of the conventional information recording / reproducing apparatus, the user is assigned to the ECC block. Only 30 Kbytes of data can be recorded. However, E
Since 32 Kbytes can be recorded in the CC blocks n + 3 and n + 4, the capacity of the user data differs between the ECC block in which information is first recorded and the subsequent ECC blocks.

For this reason, in the information recording / reproducing apparatus, when managing the recording position of the information, it is easy to perform the processing in units of powers of 2 such as 32 Kbytes. However, as described above, the ECC in which the information is first recorded is used. When the capacity of the user data of the block becomes 30 Kbytes, there is a problem that the process of managing the position of the information becomes complicated.

[0009] The present invention has been made in view of the above points, and has an information recording medium on which information such as a CD-R and a DVD-R can be recorded and a rewritable information such as a CD-RW and a DVD-RAM. CD-RO for various information recording media
An object of the present invention is to manage information recording positions without complicating the recording of information in the same minimum unit as an information recording medium capable of only reproducing information, such as an M or DVD-ROM.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention uses a predetermined amount of information for an information recording medium as a minimum unit of processing, and collects a plurality of the minimum units to manage information. When information is recorded in a recording unit of an integral multiple of the management unit, information is continuously recorded without an interval for each management unit, and the last minimum unit of the recording unit is An information recording method for allocating to a buffer area for absorbing positioning accuracy on the information recording medium is provided.

[0011]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a block diagram showing a functional configuration of an information recording / reproducing apparatus that executes an information recording method for an information recording medium according to the present invention. The information recording medium 1 is a disc medium on which information can be recorded, such as a CD-R or a DVD-R, and a disc medium on which information can be rewritten, such as a CD-RW or a DVD-RAM.

An information recording / reproducing apparatus for recording and reproducing information on and from the information recording medium 1 comprises a recording / reproducing section 2, a user data storage section 3, and a recording / reproducing control section 4. The recording / reproducing unit 2 has an optical head and optically records and reproduces information on and from the information recording medium 1.

The user data storage unit 3 stores the information recording medium 1
Is a memory for storing user data to be recorded in the information recording medium 1 and user data reproduced from the information recording medium 1. The recording and reproduction control unit 4 is realized by a microcomputer including a CPU, a ROM, a RAM, and the like, and controls recording and reproduction of information with respect to the recording and reproduction unit 2 and control of reading and writing of user data with respect to the user data storage unit 3. .

That is, the recording / reproducing control unit 4 uses a predetermined amount of information for the information recording medium 1 as a minimum unit of processing, and collects a plurality of the minimum units as a management unit for managing information. When recording information in a recording unit of an integral multiple of the management unit, the information is continuously recorded without an interval for each management unit, and the last minimum unit of the recording unit is recorded on the information recording medium 1. It functions as a means for allocating to a buffer area for absorbing positioning accuracy.

Next, a process for recording (including rewriting) information on the information recording medium 1 by the information recording / reproducing apparatus will be described. FIG. 2 shows recording (including rewriting) of information on the information recording medium 1 by the information recording / reproducing apparatus.
It is a figure showing the example of a format at the time of doing.

The recording / reproducing control unit 4 controls the recording / reproducing unit 2 to use a predetermined amount of information for the information recording medium 1 as a minimum unit (sector) of processing, and to set the minimum unit (sector) to a plurality of units. Management unit (EC that collects and manages information)
C), and when recording information in recording units (packets) that are integral multiples of the management unit (ECC block),
Information is continuously recorded without an interval for each management unit (ECC block), and the last minimum unit (sector) of the recording unit (packet) is buffered for absorbing positioning accuracy on the information recording medium 1. Assign to area (link part).

When information recorded on the information recording medium 1 is rewritten, information is continuously recorded without an interval for each management unit (ECC block), and the last minimum of the recording unit (packet) is recorded. The unit (sector) is allocated to a buffer area (link section) for absorbing the positioning accuracy on the information recording medium 1.

As described above, as shown in FIG. 2A, when information is continuously recorded on the information recording medium 1 in the information management units: ECC blocks n to n + 4, b) As shown by hatching, the last one sector of each of the ECC blocks n, n + 1, n + 2, and n + 3 is allocated as a gap area (link section). FIG. 2C shows the link portion in an enlarged manner.

Therefore, each ECC on the information recording medium 1
The user data can be reduced to 32 Kbytes from the first sector of the block, the capacity of the user data of each ECC block can be unified, and the processing for managing the data position can be easily performed.

[0020]

As described above, according to the information recording method for the information recording medium according to the present invention, the CD-
R, DVD-R, CD-RW, DVD-RAM, etc.
-Even if information is recorded in the same minimum unit as an information recording medium such as a ROM or DVD-ROM which can only reproduce information, the recording position of the information can be managed in the same manner as an information recording medium capable of reproducing information. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration of an information recording / reproducing apparatus that executes an information recording method for an information recording medium according to the present invention.

FIG. 2 is a diagram showing a format example when information is recorded on an information recording medium by the information recording device shown in FIG. 1;

FIG. 3 is a diagram showing a format example when information is recorded on an information recording medium by a conventional information recording device.

[Explanation of symbols]

 1: information recording medium 2: recording / reproduction unit 3: user data storage unit 4: recording / reproduction control unit

Claims (1)

[Claims] An information amount predetermined for an information recording medium is set as a minimum unit of processing, a plurality of the minimum units are collected as a management unit for managing information, and a recording unit of an integral multiple of the management unit is used. When information is recorded in the management unit, the information is continuously recorded without an interval for each management unit, and the last minimum unit of the recording unit is a buffer area for absorbing positioning accuracy on the information recording medium. An information recording method characterized by assigning to an information recording device.