Determinination of recording power of radiation beam for recording information onto recording medium
AssigneeBenq Corporation
InventorsWang Wai William, Chen Tso-Tsai, Yen Meng-Shin
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Abstract
The invention is to provide a method for determining a recording power of a radiation beam for recording information onto a recording medium operated at a user-desired speed. According to a preferred embodiment of the method of the invention, under operation of multiple of test speeds in turn, multiple of optimum recording powers which each corresponds to one of the test speeds are determined, respectively. Then, a function of speed is generated by fitting the corresponding optimum recording powers vs. the test speeds. The recording power for the user-desired speed is calculated by applying the user-desired speed in the function of speed.
Claims14
A method for determining a recording power of a radiation beam for recording information onto a recording medium operated at a user-desired speed, multiple of test speeds being previously provided with, said method comprising the steps of:
- (a) under operation of the test speeds in turn, determining an optimum recording power corresponding to the test speed being operated, respectively;
- (b) fitting the corresponding optimum recording powers versus of the test speeds to generate a function of speed;
- and
- (c) calculating said recording power by applying said user-desired speed in said function of speed.
An information recording/reproducing apparatus capable of determining a recording power of a radiation beam for recording information onto a recording medium operated at a user-desired speed, said apparatus being previously operated at multiple of test speeds in turn, said apparatus comprising:
- a recording processing device comprising a radiation generating circuit for recording information onto the recording medium while varying a current recording power;
- a retrieving processing device comprising a radiation detector for receiving the radiation beam reflected from the recording medium during recording of information;
- a controller, connected to said recording processing device and said retrieving processing device, for analyzing the reflected radiation beam to estimate effect of recording information under operation of the test speed being operated until an optimum recording power corresponding to the test speed being operated is determined, and then for fitting the corresponding optimum recording powers versus the test speeds to generate a function of speed;
- and
- a determining device, connected to said controller, for receiving input of said user-desired speed, and for calculating said recording power by applying said user-desired speed in said function of speed.
Dependencies are inferred from the claim text.