Electronic chronograph

Details Electronic chronograph Electronic chronograph

1975-07-24

1978-06-13

Dobeck, B.

Boots, shoes, and leggings

58 23R, 364783, G04F 800

Patent

active

040941388

ABSTRACT:
The chronograph comprises a device allowing to memorize at least two lapses of time and a subtraction device to effect the absolute difference between two lapses of time or time intervals which are memorized and preselected. The subtraction device includes:

REFERENCES:
patent: 2795378 (1957-06-01), Beranger
patent: 3257549 (1966-06-01), Mahro
patent: 3424898 (1969-01-01), Lukens
patent: 3508037 (1976-04-01), Collins et al.
patent: 3596074 (1971-07-01), Mitrofanoff
patent: 3686880 (1972-08-01), Samejima
patent: 3752394 (1973-08-01), Igel
patent: 3806719 (1974-04-01), Tamamura et al.
patent: 3809872 (1974-05-01), Yamamura et al.
"Serial Digital Adders for Variable Radix of Notation", R. Townsend, Electronic Engineering, 10/1953, pp. 410-416.
"Subtraction by Minuend Complementation", Glen G. Langdon, IEEE Transactions on Computers, Jan., 1969.

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