Information recording medium with prepit and recording/reproducing apparatus and method using the same
a technology of information recording medium and prepit, which is applied in the field of optical information recording medium, can solve the problems of difficult to obtain push-pull signal from pits, no reliable pit signals can be obtained from this signal, and the recording area of dvd-rw is the recording area, so as to achieve the effect of rapid finalization of an information recording medium
Inactive Publication Date: 2012-12-27
SAMSUNG ELECTRONICS CO LTD
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AI Technical Summary
Benefits of technology
This approach reduces the time and cost associated with finalizing the optical disk by pre-forming the prepit series during manufacturing, enabling faster production and improving signal reliability through differentiated groove and pit depths.
Problems solved by technology
However, the greatest difference between a DVD-RAM and a DVD-RW is the recording area.
Therefore, no reliable pit signals can be obtained from this signal.
However, because the groove depth of a DVD-RW is much shallower, if the pits were the same depth as the groove, a push-pull signal from the pits would be difficult to obtain.
However, drawbacks to this technique may include complex manufacturing processes and high manufacturing costs.
However a problem arises in that the paths of two laser beams have to be adjusted very precisely so as to form the grooves with different depths.
However, the manufacturing process is also complex and the production yield is low.
As a result, production cost of the disk can be very high.
Method used
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[0038]Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.
[0039]FIG. 3 is a schematic view of an information recording medium 100 having a finalization area 35 formed as a prepit series according to an embodiment of the present invention.
[0040]Finalization of an information recording medium represents a process performed to allow the use of the information recording medium only for data reproduction while limiting further attempts by a user to record further data thereon. The finalization process may include recording finalization completion information in a predetermined area of the information recording medium, writing a table of contents on the information storage medium and recording data in a predefined ...
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Abstract
An information recording medium that can be rapidly finalized, and a recording / reproducing apparatus and method using the same are provided. In the information recording medium, a prepit is pre-formed in a finalization area. Since the portion that has to be filled with data in finalizing the information recording medium is previously formed as the prepits series in manufacturing the information recording medium, the time necessary to finalize the information recording medium can be shortened, thereby achieving the rapid finalization of the medium.
Description
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This application is a continuation application of United States patent application No. 11 / 545,527, now pending, filed on Oct. 11, 2006 and claims all benefits accruing under 35 U.S.C. §119 from Korean Patent Application No. 10-2005-0100915, filed on Oct. 25, 2005, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an optical information recording medium, and more particularly, to an information recording medium that can be rapidly finalized, and a recording / reproducing apparatus and method using the same.[0004]2. Related Art[0005]Optical recording media (optical disks) are used in optical devices that record / reproduce data in a contact-less manner. Optical disks generally include compact disks (CD's) digital versatile disks (DVD's), high-definition video disks (HD-DVD's), blue-ray vid...
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IPC IPC(8): G11B19/02
CPCG11B7/00736G11B7/24038G11B7/24079G11B2220/2541G11B27/24G11B2007/0013G11B2220/237G11B7/24085G11B7/007
InventorLEE, KYUNG-GEUNTASAKA, SHUICHI
OwnerSAMSUNG ELECTRONICS CO LTD