Patent ID: 6324142
Filing Date: 2001-11-27
Classification: G11B

Abstract:
A signal converting device (11) for converting a digital signal (Sre) into a recording signal (Sdd) to be recorded on a storage medium (1), comprising:a waveform recognition unit (21) for recognizing pulse waveforms of plural kinds in the digital signal (Sre) and outputting waveform pattern signals (Sle, Ste) indicating the pulse waveforms recognized;a timing candidate signal generation unit (16) for generating timing candidate signals (Sd) on the basis of a reference clock signal (Scl) having a period equal to a reference period (T) of the digital signal (Sre);a timing signal producing unit (18, 19, 20) for selecting the timing candidate signal based on signals (Scp.sub.1 =Scp.sub.8) indicative of pulse transition timings in the recording signal to produce the timing signals (Sld, Str) indicative of at least one of a rising and a falling timing of the recording signal (Sdd); anda generation unit (24, 25, 26) for generating the recording signal (Sdd) corresponding to the pulse waveform recognized by the waveform recognition unit (21) on the basis of the timing signal (Sld, Str) and the waveform pattern signals (Sle, Ste).