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Method and device for determining a set of recording pulse series parameters for optical carrier recording, and optical record carrier

A technology for recording pulses, record carriers, applied in optical recording/reproducing/erasing methods, recording/reproducing/erasing methods, recording/reproducing by optical methods, etc., which can solve the problems of complex calculation, not scalable and general

Inactive Publication Date: 2005-08-31
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this known method requires complex calculations for each specific set of write test criteria values ​​and employs approximate formulas that are not scalable and general

Method used

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  • Method and device for determining a set of recording pulse series parameters for optical carrier recording, and optical record carrier
  • Method and device for determining a set of recording pulse series parameters for optical carrier recording, and optical record carrier
  • Method and device for determining a set of recording pulse series parameters for optical carrier recording, and optical record carrier

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Embodiment Construction

[0014] figure 1 A device and an optical record carrier 1 according to the invention are shown. A disc-shaped record carrier 1 has a transparent substrate 3 and a recording layer 5 arranged on the substrate. The recording layer 5 comprises a material suitable for writing information with a radiation beam. The recording material may be a phase change dye or any other material suitable for optical recording. The information may be recorded on the record carrier 1 in the form of optically detectable marks and lands on the record carrier.

[0015] The device comprises a radiation source, eg a semiconductor laser 11 for emitting a radiation beam. A mark is formed when the recording layer 5 of the recording record carrier 1 is exposed to a single recording pulse of radiation, characterized by a recording pulse parameter, which in this embodiment is the recording power level. Marks can also be written using a train of radiation pulses of the same or different length and one or mor...

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Abstract

A method is described for determining a set of recording pulse series parameters for recording information on an optical record carrier. First a series of test patterns is written on the record carrier with a values of the parameters. On reading the test patterns, the jitter values of each read signal is determined. The optimum values of the parameters are derived from a linear dependence between the set of recording pulse series parameters and the relative jitter values. The invention relates also to a device arranged to perform the method. The invention further relates to an optical record carrier comprising the optimum recording power as determined by the method according to the invention.

Description

technical field [0001] The invention relates to a method of determining the values ​​of a set of recording burst parameters for recording on an optical carrier, wherein these recording bursts are applied to the recording surface of an optical record carrier in order to write optically readable marks on the record carrier pattern, using a recording burst to form a mark, the method comprising: writing a write test, each write test includes a number of N test patterns, and each test pattern has a predetermined value of the set of recording burst parameters, the The value is different for each test pattern; and reading the test pattern and forming a read signal; and measuring a jitter value of the read signal corresponding to each test pattern. [0002] The invention also relates to a device for determining the values ​​of a set of recording burst parameters for recording on an optical carrier, comprising recording means for writing on the record carrier by illuminating the record...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/0045G11B5/09G11B7/006G11B7/125
CPCG11B7/1267G11B7/00456G11B7/0062G11B7/0045G11B7/126
Inventor G·R·兰格雷斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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