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:
Oct. 20, 1981
Filed:
Feb. 23, 1979
Yasuhiko Nishikubo, Iruma, JP;
Citizen Watch Co. Ltd., Tokyo, JP;
Abstract
A crystal oscillation-type electronic timepiece having an oscillator with a crystal oscillator as a time base, means for dividing the frequency of the oscillator, display driving means and time display means. The oscillator has a complementary metal oxide semiconductor logic circuit including an inverter with a gated N-channel transistor and a gated P-channel transistor. The inverter is designed such that a ratio of the width and length in a channel of the gated N-channel transistor is made less than one and that a ratio of the width and length in a channel of the gated P-channel transistor is made less than two. The capacity of an input capacitor connected to an input of the crystal oscillating element is larger than that of an output capacitor connected to an input of the crystal oscillating element. The consumed power at the oscillating part is thereby decreased.