ANALOG SIGNAL RECORDING METHOD AND ITS APPARATUS

摘要

PROBLEM TO BE SOLVED: To make it possible to stably execute the recording in follow up to an additionally higher frequency with high resolution when recording an analog signal on a recording medium. SOLUTION: The number of lighting of plural light sources is changed according to the signal level of the recording signal S10 and the plural light sources are lighted multiple times with respect to the signal detection region at the time of reproduction. The recording medium 1B is irradiated with the light beams from the plural light sources subjected to lighting control and the waveforms meeting the recording signal S10 are recorded to the recording medium 1B, by which the signal detection region at the time of reproduction is divided by the number of divisions meeting the number of lighting times. The waveforms respectively formed by the amplitude meeting the signal levels are successively recorded in the divided regions. As a result, the resolution of the recording signal may be additionally enhanced with the smaller number of the light sources when the analog signal is recorded in follow up to the higher frequency.