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.
Patent No.:
Date of Patent:
May. 03, 1977
Filed:
May. 14, 1975
Abstract
An electronic timepiece comprises a quartz oscillator, a dividing circuit, a preset circuit connected to receive and divide the output pulses of the oscillator and a control circuit. The dividing circuit includes a first counter and a second counter. The preset circuit includes a setting circuit connected to an externally actuated switch, a memory circuit memorizing the number of switching times of the setting circuit caused by actuation of the switch, and a control setting circuit for presetting the complement of the memorized content of the memory circuit in the first counter. The second counter receives outputs from flip-flops constituting the first counter and produces an output which is applied to the control circuit which in turn produces an adjustment signal to the control setting circuit. The variation of the frequency of the quartz oscillator is precisely adjusted by changing the dividing ratio of said dividing circuit.