Chronograph

Registers – Coded record sensors – Particular sensor structure

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Details

58 74, 58145D, 235 92GA, G04F 800, G04F 1000, G04F 704, G06F 738

Patent

active

041663608

ABSTRACT:
A chronograph includes a reference time counter for measuring a reference time upon receipt of a reference pulse, a plurality of short time counters for measuring a short time difference occurring between runners upon receipt of the reference pulse, a reference pulse control circuit for controlling the supply of the reference pulse to these counters, and an addition circuit for adding the contents of the reference counter to those of the short time counters successively in response to each addition command. The reference pulse control circuit selects either of the reference counter and the short time counters successively in response to each operation of a first switch of a time measuring operator and further supplies the reference pulse to only the selected counter. The reference time counter stores the resultant time resulting from the addition made responsive to each addition command through the operation of a second switch by a single time measuring operator. The resultant time is sequentially displayed through a display circuit so that a single operator can measure the times of a plurality of runners.

REFERENCES:
patent: 3781529 (1973-12-01), Abramson et al.
patent: 3961473 (1976-06-01), Hung
patent: 4074117 (1978-02-01), DeLorean et al.
patent: 4078374 (1978-03-01), Kondo
patent: 4089156 (1978-05-01), Kashio
patent: 4104864 (1978-08-01), Ishikawa et al.
patent: 4104865 (1978-08-01), Sasaki
patent: 4123896 (1978-11-01), Asano et al.

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