The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 26, 1989

Filed:

Jul. 18, 1988
Applicant:
Inventor:

Mishio Hayashi, Ohsato, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
377 44 ; 377 20 ; 377 28 ; 377 52 ; 377107 ; 328 72 ; 3281291 ;
Abstract

Sampling pulses for determining a series of measurement periods are each synchronized, by a synchronizing circuit, with one of a plurality of input signal pulses to be measured. A first counter responds to the synchronized sampling pulse to start the counting of the input signal pulses. When the first counter has counted a predetermined number M of input signal pulses, a second counter starts counting the input signal pulses at the initial value M and stops the counting in response to the next synchronized sampling pulse. The count value of the second counter is applied to a display during the next counting of the input signal pulses by the first counter up to the predetermined number.


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