Optical disc recording apparatus with realtime updating of strategy

A method of recording a signal on an optical disc by irradiating an optical beam according to a strategy which is stepwise updated by a given step amount, the method comprising the steps of:

• successively detecting a linear velocity of the optical disc relative to the optical beam in realtime basis;
• successively generating the strategy according to the detected linear velocity every time the linear velocity of the optical disc is detected;
• providing a plurality of storage areas, each being capable of memorizing the strategy successively generated;
• rewriting one of the storage areas every time the strategy is generated until the strategy is updated by a given step amount and then rewriting another of the storage areas every time the strategy is generated while leaving said one storage area to hold the updated strategy, thereby updating the strategy through the plurality of the storage areas;
• selecting the storage area holding the updated strategy to read therefrom the updated strategy while allowing the rewriting of another storage area;
• generating a pulse waveform shaped according to the updated strategy held in the selected storage area;
• and
• irradiating the optical beam in response to the generated pulse waveform to record the signal on the optical disc.

A computer program for use in a disc apparatus having a processor for recording a signal on an optical disc by irradiating an optical beam according to a strategy which is stepwise updated by a given step amount, the computer program being executable by the processor for enabling the disc apparatus to perform a process comprising the steps of:

• successively detecting a linear velocity of the optical disc relative to the optical beam in realtime basis;
• successively generating the strategy according to the detected linear velocity every time the linear velocity of the optical disc is detected;
• providing a plurality of storage areas, each being capable of memorizing the strategy successively generated;
• rewriting one of the storage areas every time the strategy is generated until the strategy is updated by a given step amount and then rewriting another of the storage areas every time the strategy is generated while leaving said one storage area to hold the updated strategy, thereby updating the strategy through the plurality of the storage areas;
• selecting the storage area holding the updated strategy to read therefrom the updated strategy while allowing the rewriting of another storage area;
• generating a pulse waveform shaped according to the updated strategy held in the selected storage area;
• and
• irradiating the optical beam in response to the generated pulse waveform to record the signal on the optical disc.