Time code generator

Details Time code generator Time code generator

1979-12-06

1981-07-07

Groody, James J.

Communications: electrical

Audible indication

Percussion-type sound producer

34087001, 34087022, 368 47, G08C 1928, G08C 900

Patent

active

042777798

ABSTRACT:
A time code generator for generating a time-coded pulse sequence comprising a digital clock for generating time information in a BCD code, six BCD-to-decimal coder stages each coupled to a corresponding output terminal of the digital clock and six binary multiplexer stages connected through a diode matrix to the BCD-to-decimal coder stages. A clock pulse generator for generating clock pulses at a predetermined frequency, a decoder coupled to the binary multiplexer stages, a follow-up counter for serially energizing the binary multiplexer stages and a frequency divider for controlling the clock pulse generator, follow-up counter, decoding and binary multiplexer stages are provided.
A NAND gate is coupled to the outputs of the binary multiplexer stages, a mode switch to the output of the NAND gate and a first and second output signal amplifiers are coupled to the mode switch.

REFERENCES:
patent: 3229278 (1966-01-01), Hanson et al.
patent: 3472019 (1969-10-01), Webb
patent: 3756012 (1973-09-01), Kiss
patent: 4087958 (1978-05-01), Ebihara et al.
"Handbook of Precision Timekeeping and Tape Search", Systron-Donner Corp., Sep. 1974.

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