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Method and apparatus for writing data to optical storage medium, and phase regulator

一种存储介质、数据写入的技术，应用在光学记录/再现/擦除方法、信息存储、数据记录等方向，能够解决增加写入信号失真等问题，达到状态变换时间降低、避免脉冲失真以及消失的效果

Inactive Publication Date: 2010-07-21
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This will increase the possibility of distorting the write signal

Method used

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  • Method and apparatus for writing data to optical storage medium, and phase regulator
  • Method and apparatus for writing data to optical storage medium, and phase regulator
  • Method and apparatus for writing data to optical storage medium, and phase regulator

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Embodiment Construction

[0041] Certain terms are used throughout the specification and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open-ended term, so it should be interpreted as "including but not limited to".

[0042] As known by those skilled in the art, in order to write data to a disk, the data is encoded to generate an internal eight-to-fourteen modulation (hereinafter referred to as EFM) signal. Based on the internal EFM signal and predetermined period durations (predetermined period durations), the write strategy unit (write strategy unit) of the laser diode driver (laser diode driver, hereinafter referred to as LDD) controller...

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Abstract

A method and apparatus for writing data to an optical storage medium are disclosed. A write signal indicating power levels of a laser diode is generated by encoding and decoding codewords. The codewords are generated and decoded according to a Successive State Change Criterion (SSCC) or SSCC II proposed by the present invention. By doing so, toggling (i.e. state changing) times occurring in channels transferring the codewords can be significantly reduced to avoid the problems of pulse distortion and disappearance in high frequency transmission. Alternatively, toggles appearing in the respective channels can be spread to avoid interference between the channels. Further, a phase adjustment device for adjusting a phase of each codeword is disclosed.

Description

technical field [0001] The present invention relates to a method for writing data into an optical storage medium, a device for writing data into an optical storage medium and a phase adjustment device, in particular to a method for generating a write signal to write data into an optical storage medium, A device for writing data into an optical storage medium by means of a generated write signal and a phase adjustment device. Background technique [0002] In an existing optical storage system, a recording device is used to write data into an optical storage medium, such as a magnetic disk, and the laser power of the recording device is controlled by a write signal. The write signal is determined based on the write strategy. The writing laser power is varied according to the writing signal, which indicates the desired laser power level during the various stages of writing. [0003] Traditionally, a write signal is composed of multiple control signals. The composed write sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/0045G11B20/10
CPCG11B7/00451G11B2220/2537G11B7/00456G11B7/126G11B20/1423
Inventor 谢享季张又文萧诗骏
Owner MEDIATEK INC
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