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Apparatus and method for deciding optimum recording power in a disc drive

A recording power, disk drive technology, applied in optical recording/reproducing/erasing methods, data recording, optical recording heads, etc., to solve problems such as changes in effective recording power

Inactive Publication Date: 2004-03-17
TOSHIBA SAMSUNG STORAGE TECH KOREA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the recording power used by the active layer of the disc, the so-called effective recording power, may vary due to hardware errors in the disc drive

Method used

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  • Apparatus and method for deciding optimum recording power in a disc drive
  • Apparatus and method for deciding optimum recording power in a disc drive
  • Apparatus and method for deciding optimum recording power in a disc drive

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Embodiment Construction

[0024] 1, a disk drive having a device for determining the optimal recording power includes a disk 101, a pickup unit 102, a control unit 103, an encoder 104, a recording pulse generator 105, a tilt compensation unit 106, a reproduction power generator 107, A radio frequency (RF) amplifier 108, a decoder 109, a block error rate (BER) measurement unit 110, a modulation rate measurement unit 111, and an asymmetry measurement unit 112 included in the decoder 109.

[0025] The disc 101 is a recordable disc such as a recordable / rewritable optical disc (CD-R / RW), a recordable / rewritable digital versatile disc (DVD-R / RW), and a DVD-random access memory (DVD-RAM). Record disc,

[0026] The pickup unit 102 records data on the disc 101 and picks up the data recorded on the disc 101. To perform the above-mentioned work, the pickup unit 102 includes: a laser diode (not shown) for irradiating a light beam to the disc 101; and a driving unit (not shown) for driving in accordance with the record...

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Abstract

An apparatus and method determining an optimum recording power suitable for a disc loaded in a disc drive. The apparatus includes a pickup unit and a control unit. The pickup unit records data in a predetermined area on the disc and reproduces the recorded data from the disc. The control unit controls the disc drive to record data in the predetermined area of the disc using a preset reference recording power. The control unit detects a plurality of recording powers using reproduction signals of the predetermined area reproduced from the pickup unit and one or more reference values, and decides an optimum recording power for the disc based on the detected plurality of recording powers. Thus, the recording power used by an active layer of the disc can be prevented from varying due to hardware error in the disc drive with respect to various kinds of discs.

Description

[0001] The present invention claims the priority of Korean Patent Application No. 2002-54326 filed with the Korean Intellectual Property Office on September 9, 2002, and is hereby quoted in its entirety for reference. Technical field [0002] The present invention relates to a device and method for determining the optimal recording power in a disk drive, and more particularly to a device and method for determining the optimal recording power of a disk suitable for insertion in the disk drive. Background technique [0003] Since there are many kinds of recordable discs, since the recording power is closely related to the recording quality and reproduction quality of the disc, various techniques have been proposed to generate recording pulses with optimal recording power. [0004] However, the optimal recording power of the disc differs according to the characteristics of the disc and the performance of the disc drive. Therefore, as long as a new disc is loaded in the disc drive, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/004G11B7/00G11B7/095G11B7/125
CPCG11B7/1267G11B7/0956G11B2007/0006G11B7/004
Inventor 安钟泰
Owner TOSHIBA SAMSUNG STORAGE TECH KOREA CORP