Optical disc having tracking polarity information, and apparatuses and methods for recording and reproducing user data on the same

a technology of optical discs and user data, applied in the field of optical discs, can solve problems such as the delay of user data reproduction

Inactive Publication Date: 2008-03-13
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an optical disc with easily recognizable information about its polarity and reflectivity, and methods for recording and reproducing this information. The information is recorded in a burst cutting area (BCA) between the clamping area and the lead-in area, and includes at least one of tracking polarity information and reflectivity information. The recording and reproducing methods involve reading the information and analyzing it to adjust the write or read power of the laser beam for recording or reproducing user data on the optical disc. The technical effects of this invention include improved tracking and improved data recording and reproducing on optical discs.

Problems solved by technology

That is, the conventional optical disc reproducing apparatus spends considerable time in detecting the polarity of the tracking signal before reading the user data, thereby delaying a reproduction of the user data.

Method used

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  • Optical disc having tracking polarity information, and apparatuses and methods for recording and reproducing user data on the same
  • Optical disc having tracking polarity information, and apparatuses and methods for recording and reproducing user data on the same
  • Optical disc having tracking polarity information, and apparatuses and methods for recording and reproducing user data on the same

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Embodiment Construction

[0036] Reference will now be made in detail to the present aspects of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The aspects are described below in order to explain the present invention by referring to the figures.

[0037]FIG. 1 is a schematic block diagram of an optical disc recording apparatus, according to an aspect of the present invention. Referring to FIG. 1, the recording apparatus includes a recording unit 1 and a controller 2 to record information regarding a polarity of a tracking signal and / or a reflectivity of an optical disc 100 on a burst cutting area (BCA) on the optical disc 100. The controller 2 creates the information regarding the polarity of the tracking signal and / or the reflectivity of the BCA and the recording unit 1 records at least one of tracking polarity information and reflectivity information on the BCA. Thus, the BCA of the optical disc 100...

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Abstract

An optical disc includes tracking polarity information. The optical disc includes a clamping area, a lead-in area, a data area, and a burst cutting area (BCA). The BCA is present between the clamping area and the lead-in area and in which information regarding the optical disc is recorded, and the information is read before performing tracking in the data area. Accordingly, it is possible to obtain the tracking polarity information and / or reflectivity information without trial and error and directly record or reproduce user data in a data area of the optical disc.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of U.S. patent application Ser. No. 10 / 695,393, filed Oct. 29, 2003, which claims the priority of Korean Patent Application No. 2002-67968 filed Nov. 4, 2002, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an optical disc, and more particularly, to an optical disc having at least one recording layer, and apparatuses and methods for recording and reproducing data on the same. [0004] 2. Description of the Related Art [0005] Compact discs (CDs) and digital versatile discs (DVDs) are the most popular types of data storage media. In general, user data is recorded on pits of a recording layer of a read-only optical disc and recorded by changing a phase of a phase change material (PCM) on the recording layer of a rewritable optical disc w...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G11B7/00G11B7/007G11B7/09
CPCG11B7/004G11B2007/0006G11B7/0945G11B7/00736G11B7/007
InventorLEE, KYUNG-GEUNPARK, IN-SIKKO, JUNG-WANYOON, DU-SEOP
OwnerSAMSUNG ELECTRONICS CO LTD