Method and apparatus for numerically converting a parallel binar

Details Method and apparatus for numerically converting a parallel binar Method and apparatus for numerically converting a parallel binar

1980-09-02

1982-05-04

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

235 92MP, 235 92VA, H03K 1324

Patent

active

043284841

ABSTRACT:
A method and apparatus are disclosed for converting a parallel binary coded, input number from a first unit system to a second unit system, the two unit systems being related by a known numerical conversion factor. The parallel binary coded input number is converted to a number of serial pulses equal to the coded number and the serial pulses are fed to a counter provided with feedback. The feedback operates on the counter to reduce the count of serial pulses by a selected numerical conversion factor to thereby effect the desired conversion.
The counter output typically includes a converted number expressed in the second unit system and a remainder number expressed in the first unit system, the remainder being smaller than the numerical conversion factor.
The described embodiment of the invention is a digital electronic counter useful with motion picture film transport equipment for converting the number of film frames displaced by the transport into a variety of output formats such as film footage or running time of the film.

REFERENCES:
patent: 2697549 (1954-12-01), Hobbs
patent: 3140469 (1964-07-01), Hart
patent: 3276013 (1966-09-01), Chandler
patent: 3560959 (1971-02-01), Bergey
patent: 3748450 (1973-07-01), Fico
patent: 3805041 (1974-04-01), Langheinrich
patent: 3862407 (1975-01-01), Baldauf
patent: 3885134 (1975-05-01), Bergin
patent: 4011559 (1977-03-01), Sharp
patent: 4021828 (1977-05-01), Iura

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