Optical disc recording apparatus

Details Optical disc recording apparatus Optical disc recording apparatus

1990-08-08

1992-11-03

Canney, Vincent P.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

G11B 707

Patent

active

051611457

ABSTRACT:
An optical disc recording apparatus for recording information signals on an optical disc having an optical recording medium with a larger than normal thermal time constant, such as an organic dyestuff base material, by irradiating the disc with a recording light modulated by signals produced by eight/fourteen modulation of information signals, is disclosed. The apparatus includes a recording pulse forming unit for forming recording pulses from the eight/fourteen modulated signals, which recording pulses are of pulse widths shorter than the eight/fourteen modulated signals by a pulse width corresponding to the elongation from the regular length of a pit formed on the recording medium on the basis of the eight/fourteen modulated signals, and an optical head supplied with the recording pulses formed by the pulse forming unit for producing the light which has been pulse width modulated by the recording pulses.

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