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. 19, 1981
Filed:
May. 13, 1977
Tadahiko Nakagiri, Higashimurayama, JP;
Kunihiro Daigo, Higashiyamato, JP;
Toshiaki Oguchi, Kodaira, JP;
Minoru Natori, Tokyo, JP;
Toshikazu Hatuse, Tanashi, JP;
Toshikazu Shimazaki, Tanashi, JP;
Kouhei Kawanobe, Kawagoe, JP;
Hiroshi Ogawa, Tokorozawa, JP;
Yoshinobu Kashima, Tanashi, JP;
Singo Ichikawa, Sayama, JP;
Ryo Namiki, Tokyo, JP;
Hisao Yamagata, Tokorozawa, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
An electronic calculator watch which comprises timekeeping means composed of an oscillator, a frequency divider connected to the oscillator, a counter circuit connected to the frequency divider, and a driver circuit connected to the counter circuit for providing an output signal indicative of time information, and calculating means composed of an oscillator circuit and a calculation circuit responsive to perform calculations under control of numerical inputs furnished by external operation device provided on a watch case. The watch also comprises a display including a first display section connected to the driver circuit of the timekeeping means to display the output signal delivered therefrom, and a second display section connected to the calculating means to display the result of calculations, each of the first and second display sections having a plurality of digit electrodes and a plurality of segment electrodes arranged in a matrix configuration.