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:
Jun. 20, 1978
Filed:
Jul. 06, 1976
Kazuhiro Asano, Chiba, JA;
Kojiro Tanaka, Yachiyo, JA;
Abstract
An oscillation and dividing circuit having a level shifter for an electric timepiece comprises an oscillating circuit, a multi-stage dividing circuit for dividing the frequency of the oscillating circuit and a delay circuit. The outputs of the dividing circuit and the delay circuit are connected through a NAND circuit to the base of a P-FET of the level shifter circuit. The output of the oscillating circuit is connected through an inverter to one input terminal of the first stage of the dividing circuit and through a second inverter to the other input terminal. The output of one stage of the dividing circuit is connected as a control circuit to the delay circuit, thereby supplying a square wave control signal even if the oscillating circuit produces a distorted signal. The pulse width of the pulse applied to the level-shifter is hence constant in spite of poor functioning of the oscillating circuit and a high output voltage is attained.