Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1985-01-17
1987-01-06
McElheny, Jr., Donald
Facsimile and static presentation processing
Facsimile
Recording apparatus
358314, 360 103, 360 381, H04N 988, H04N 594
Patent
active
046351345
ABSTRACT:
A video signal processing apparatus for processing a video signal at the time of a special reproduction mode comprises an A/D converter for converting a reproduced video signal obtained by demodulating a frequency modulated signal reproduced from a recording medium during the special reproduction mode into a first digital video signal, a memory having a memory capacity for at least storing the first digital video signal corresponding to one field, a switching circuit for selectively producing the first digital video signal or a second digital video signal read out from the memory, a first circuit for at least generating a first pulse signal having a pulse width corresponding to a predetermined time period and a second pulse signal which determines the read-out timing of the memory, a second circuit for generating a control signal based on the first and second pulse signals for controlling read-out from the memory and causing the switching circuit to selectively produce the second digital video signal during a time period approximately corresponding to the predetermined time period, and a D/A converter for obtaining a reproduced composite video signal from the output digital video signal of the switching circuit.
REFERENCES:
patent: 3586762 (1971-06-01), Hodge et al.
patent: 4054903 (1977-10-01), Ninomiya
patent: 4199780 (1980-04-01), Taylor
patent: 4376290 (1983-03-01), Shirota
Azuma et al., "Microprocessor Controlled Variable Play-Back Speed System for Video Tape Recorder", IEEE Trans. Consum. Electron. (USA), vol. CE-26, No. 1 (Feb. 1980), pp. 121-128.
Sasamura Kohei
Tokumitsu Junsuke
McElheny Jr. Donald
Meller Michael N.
Victor Company of Japan Ltd.
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