Optical disc controller and optical disc device using the same

A controller and main controller technology, applied in the direction of instrument, configuration/installation of head, modification of read/write signal, etc., can solve the decrease of reliability of optical disc equipment, negative effects of recording or reproduction processing of new types of optical discs, etc. question

Inactive Publication Date: 2003-01-08
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, in the case where the number of types of optical discs supported by a single optical disc device increases, the recording or reproducing processing for supporting existing optical discs, and the recording or reproducing processing for new types of optical discs are adversely affected
As a result, in many cases, the reliability of optical disc devices is reduced

Method used

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  • Optical disc controller and optical disc device using the same
  • Optical disc controller and optical disc device using the same
  • Optical disc controller and optical disc device using the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0054] figure 1 The structure of an optical disc device including the optical disc controller 6 according to the first embodiment of the present invention is shown. The optical disc controller 6 controls recording or reproduction of the optical disc.

[0055] The optical disc apparatus 1 is connectable to a main controller 22 including a reproduction information output section (output means) 23 . The reproduction information output section 23 outputs sound, data, images, and the like. The optical disc device 1 also includes an optical disc controller 6 . Optical disc controller 6 comprises: rewritable (variable) memory 25, is used for storing the required information of recording or reproducing optical disc 2; Optical disc determines block (determining device) 7, is used for determining the kind and model of optical disc; Information search A block (search means) 8 for searching an area of ​​the optical disc in which control information is recorded based on the determinatio...

no. 3 example

[0098] Figure 6 The structure of an optical disc device 1 including an optical disc controller 6 according to the third embodiment of the present invention is shown. The optical disc controller 6 controls recording or reproduction of data on the optical disc. In addition to the error rate or error correction amount measurement block 200, the components shown in the third embodiment are the same as figure 1 The components of the first embodiment are the same as those of the first embodiment, so their detailed descriptions are omitted here.

[0099] The following describes the structure of the error rate or error correction amount measurement block 200, which is the main part of the third embodiment of the present invention.

[0100] In the third embodiment, the optical disc controller 6 further includes an error rate or error correction number measuring block (error measuring means) 200 for measuring the error rate or the number of error corrections during reproduction of co...

no. 4 example

[0112] Figure 8 The structure of an optical disc device 1 including an optical disc controller 6 according to a fourth embodiment of the present invention is shown. The optical disc controller 6 controls recording or reproduction of data on the optical disc. exist Figure 8 , similar components are used in figure 1 The reference numerals used in the first embodiment are indicated, and their detailed descriptions are omitted. In the fourth embodiment, "port" refers to a general-purpose terminal used as an input or output terminal. Figure 8 The function of the buffer memory 40 of the fourth embodiment shown is equivalent to that of the variable memory 25 of the first embodiment. However, the buffer memory 40 need not be variable.

[0113] The essential part of the fourth embodiment, namely, the port control method for a multi-port circuit, will be described below.

[0114] For example, in order to obtain the control information of the control track occurring in the inner...

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Abstract

An optical disc controller for controlling recording or reproduction of an optical disc includes: a rewritable memory for storing information necessary for recording or reproduction of the optical disc; a determination section for determining a class and type of the optical disc; a search section for searching for a region of the optical disc in which control information is recorded based on a determination result of the determination section; a reproduction section for reproducing the control information recorded in the region searched by the search section; and a memory control section for changing an arrangement of the memory based on at least one of the determination result and the control information reproduced by the reproduction section.

Description

technical field [0001] The present invention relates to an optical disc controller used in an optical disc device that records information on and / or reproduces information from an optical disc using a semiconductor laser (red laser, blue laser, etc.) as a light source. More specifically, the present invention relates to an optical disc controller capable of determining the type of an optical disc mounted on an optical disc capable of recording information on various types of optical discs having different physical structures and different logical structures, and / or from In the apparatus for reproducing information in the above-mentioned optical disc, and the optical disc controller performs memory allocation (mapping) according to the determined optical disc type. The present invention also relates to an optical disc device using such an optical disc controller. Background technique [0002] In recent years, research and development on Digital Versatile Disc (DVD) technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/0037G11B7/085G11B7/09G11B20/10G11B20/18
CPCG11B7/00375G11B20/1806G11B20/10009G11B7/0945G11B7/08505
Inventor 渡边克也铃木达夫初濑川明广高桥正将
Owner PANASONIC CORP
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