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Apparatus and method for improving deviation of optimum power calibration

An optimal and powerful technology, applied in the configuration/installation of the head, optical recording/reproduction, agricultural machinery and implements, etc., can solve problems such as jitter, recording optical power deviation, etc.

Inactive Publication Date: 2006-09-20
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0019] However, there is a problem that the detected optimal optical power may jitter due to a severe deviation (typically, not less than 0.4mV) of the recording optical power after performing a full DC erasure of the preserved PCA The deviation between the recorded optical power of the disc and the recorded optical power first found by the OPC operation in the unrecorded area of ​​the new disc
As such, OPC operations may not be suitable for Blu-ray sets (Blu-ray set)
[0020] In addition, Blu-ray devices require a relatively large amount of time to search for areas required for OPC operations compared to ordinary optical discs

Method used

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  • Apparatus and method for improving deviation of optimum power calibration
  • Apparatus and method for improving deviation of optimum power calibration
  • Apparatus and method for improving deviation of optimum power calibration

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Embodiment Construction

[0044] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The specific embodiments are described below in order to explain the present invention by referring to the figures.

[0045] image 3 An optical disc apparatus is shown to which the improved method according to the embodiment of the present invention is applied to reduce the deviation of the OPC operation and the recording time. Such as image 3 As shown, the optical disc device 100 includes: a digital recording signal processor (DSP RECORD) 150a, which is used to add an error correction code (ECC) to the input digital data, so as to convert the input digital data into a recording format; a channel bit encoder (channelbit encoder) ) 160, used to convert the data that has been converted into a recording format into a bit stream; an optical driver 170, used to output an in...

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Abstract

A method of improving a problem of a deviation of an optimum recording optical power, which is capable of reducing deviation of OPC (Optical Power Calibration) power and shortening a Lead-in time by previously setting an area in which an OPC operation may be conducted and erasing the area with an erase power.

Description

technical field [0001] One aspect of the present invention relates to an optical recording device, and more particularly, to a technique capable of reducing deviation and increasing speed of an Optimum Power Calibration operation. Background technique [0002] In an optical recording / reproducing apparatus, it is important to record information on an optical recording medium using an irradiation beam with precise power. Due to the environment of all recording media and recording equipment combined and the influence of equipment-to-equipment deviations, such precise power cannot be provided basically all the time (for example, by pre-recording on the disc) [0003] Therefore, in order to find the optimal optical power suitable for the recording operation, the optical recording / reproducing device generally performs an Optimum Power Calibration (Optimum PowerCalibration) operation in a test area of ​​an optical disc inserted therein to detect the optimal optical power (Popt), an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/09G11B7/125
CPCG11B7/1267G11B7/00736G11B20/182A01F29/08B26D1/08A01F29/005
Inventor 刘真雨李泰勋
Owner SAMSUNG ELECTRONICS CO LTD
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