Title: Optical high density FM recording device with corrective signal

Abstract: An optical high density recording device which comprises, in combination, a beam generator, a beam modulator to modulate the beam in accordance with an applied modulating signal, a recording medium to record a locus of the beam irradiated thereonto. The recording medium and the beam irradiated onto the recording medium are moved relatively to one another, a recording signal is introduced onto the recording medium, a corrective voltage to be determined by a function of the recording signal is generated and is applied with the recording signal to the beam modulator as a modulating signal.

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Inventors: Tsuji, Takao (Kawasaki, JP)
Goshima, Takeshi (Tokyo, JP)
Sato, Hideaki (Yokohama, JP)

Application Number: 922645
Filing Date: 1978-07-07
Publication_date: 1980-10-21
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Class(es): 386/113 369/111, 369/121, 369/124.14, 386/126
Other Classes:
US Patent Ref:

1732874	Oct, 1929	Zworykin	179/100.
1802699	Apr, 1931	Bloomenthal	179/100.
1986569	Jan, 1935	Frayne	179/100.
2592572	Apr, 1952	Jennings	179/100.
3534166	Oct, 1970	Korpel	179/100.
3800099	Mar, 1974	Dickopp	179/100.
3800100	Mar, 1974	Runge	179/100.
3829605	Aug, 1974	Dickopp	179/100.

Other Refs:
Primary Examiner: Cardillo, Jr., Raymond F.
Assistant Examiner:
Attorney: Fitzpatrick, Cella, Harper & Scinto