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Recording disc and apparatus and method for reproducing recorded information

a recording disc and recording information technology, applied in the direction of optical recording/reproducing/erasing methods, instruments, disposition/mounting of heads, etc., can solve the problem of extreme large apparatus scal

Inactive Publication Date: 2005-09-29
PIONEER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables immediate and reliable reproduction of information from discs with both convex and concave recording pits without trial readings, simplifying the apparatus design and improving tracking control accuracy.

Problems solved by technology

Thus, the conventional recorded information reproducing apparatus which supports any of DVD-R, DVD-RW and DVD-ROM comprises dedicated processing circuits for generating the push-pull signal, high frequency signal and diagonal differential signal, respectively, resulting in an extremely large scale of the apparatus.

Method used

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  • Recording disc and apparatus and method for reproducing recorded information
  • Recording disc and apparatus and method for reproducing recorded information
  • Recording disc and apparatus and method for reproducing recorded information

Examples

Experimental program
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Embodiment Construction

[0034]FIGS. 2A and 2B generally illustrate an exemplary structure of a recording disc according to the present invention.

[0035]FIG. 2A is a cross-sectional view of the recording disc.

[0036] As illustrated in FIG. 2A, the recording disc comprises a first recording layer RY1 in which convex recording pits are recorded and a second recording layer RY2 in which concave recording pits are recorded. Each of these first recording layer RY1 and second recording layer RY2 is divided into an information data area 1, a lead-in area 2, a lead-out area 3, and a PEP (phase encoded part) area 4, as illustrated in FIG. 2B. The PEP area 4 may be provided only in one of the recording layer RY1 and second recording layer RY2.

[0037] The information data area 1 is an area in which a variety of information data is recorded, such as video, audio, and computer data. The lead-in area 2 in turn is an area in which lead-in data is recorded, including a recorded position, required time for reproduction, dis...

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Abstract

A recording disc and recorded information reproducing apparatus and method for immediately starting reproduction of information when a push-pull based tracking control is employed to reproduce recorded information from the recording disc. The recording disc comprises an information data area for recording recording marks which carry information data in columns, and a control data area for recording identification information indicative of a recording pattern of the recording marks in the information data area.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a recording disc, and a recorded information reproducing apparatus and method for reproducing recorded information from the recording disc. [0003] 2. Description of Related Art [0004] Today, DVD-ROM is widely used as a read-only optical recording medium which has previously recorded thereon information data such as audio, video, computer data and the like. The DVD-ROM has, for example, a two-layer recording surface comprised of a first recording layer and a second recording layer. When viewing the first recording layer from the top layer from which a reading beam light is irradiated onto the DVD-ROM, a recording pit train carrying information data is formed on a spiral or concentric track. On the other hand, when viewing the second recording layer from the bottom surface of the DVD-ROM, a recording pit train carrying information data is formed on a spiral or concentric track. Specifi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B7/00G11B7/005G11B7/007G11B7/09G11B7/24
CPCG11B7/0053G11B7/00736G11B7/0901G11B2007/0013G11B7/0945G11B7/24038G11B7/0938
Inventor TOMITA, YOSHIMIIIDA, TETSUYA
Owner PIONEER CORP
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