CD recording apparatus and recording method thereof

Abstract

The invention provides a CD recording device and method of precision improvement, which is characterized by the following: the optical program accumulator of CD recording device records marking length, magnitude of power and time-delay value corresponding to the fore-and-aft marking gap combination, wherein the magnitude of power and time-delay value depends on the fore-and-aft marking gap combination of NRZI signals. The edible time-delay device generates multiple-pulse of NRZI signal. The LD activator transforms the DAC magnitude of power to operate the CD record by changing each pulse level.

Description

technical field [0001] The present invention relates to the technology of the optical disc recording device, especially the technology of the optical disc recording device and its recording method for more accurate marking in high-speed recording in consideration of time delay and recording power level. Background technique [0002] In re-recordable optical discs, the recording substances are usually composed of phase change substances. In such a phase-change optical disc, heat generated by light irradiation forms an optically recognizable mark on the optical disc with a recording layer. That is, the heating temperature and cooling rate can be controlled in the phase-change optical disk, and the crystal structure and the amorphous structure can be changed into a reversible structure, so as to save or delete information. [0003] In phase-change discs, information is saved or deleted depending on the laser power applied. If high-output laser power is irradiated on the recor...

AI Technical Summary

Problems solved by technology

To meet these requirements above, the design of programmable delay elements becomes complex

[0015] In addition, when the programmable delay element is made into an IC (integrated circuit), it is difficult to install it inside the integrated circuit due to its very large volume

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