Optics: motion pictures – Time compression or expansion
Patent
1981-09-01
1983-09-20
Gellner, Michael L.
Optics: motion pictures
Time compression or expansion
352180, G03B 100, G03B 4100
Patent
active
044052170
ABSTRACT:
The disclosed film speed control system for high speed motion picture cameras includes an actual film speed signal source, a selected film speed signal source, a charge pump integrated circuit responsive to the actual film speed signal to produce an output signal linearly related to the actual film speed signal, and a comparing circuit for comparing the charge pump output signal with the selected film speed signal.
REFERENCES:
patent: 2523722 (1970-08-01), Beaman
patent: 3259448 (1966-07-01), Whitley et al.
patent: 3597060 (1971-08-01), Beaman
patent: 3790262 (1974-02-01), Van Derwater, Jr.
patent: 4008425 (1977-02-01), Dickey
Linear Databook, National Semiconductor Corporation, 1980, pp. 9-79 through 9-91.
Electronics Designers' Handbook, (2nd Ed.), edited by L. J. Giacoletto, 1977, Sections 19.3, 19.5.
Hycam.RTM. Instruction Manual, Redlake Corporation, 1972, Sections 2, 4-1 through 4-3; FIG. 4-1; Schematic Diagrams; Voltages and Wave Forms Charts.
HYCAM II Operating Instructions and Illustrated Parts List List, Redlake Corporation, Jan. 1981, Sections 2.0.4-2.2.2, FIG. 18, FIG. 22, Sections 10.0 to 11.0, FIGS. 36, 37.
Gellner Michael L.
Redlake Corporation
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