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:
Nov. 16, 1976
Filed:
Oct. 17, 1974
Applicant:
Inventors:
Ernest C Ho, Newport Beach, CA (US);
Norman E Moyer, Newport Beach, CA (US);
Richard J Belardi, Anaheim, CA (US);
Assignee:
Hughes Aircraft Company, Culver City, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04B / ; G04C / ; H05B / ;
U.S. Cl.
CPC ...
58 / ; 58 5 / ; 58 58 ; 240-643 ; 340336 ;
Abstract
A digital watch system includes a crystal controlled oscillator with frequency division which controls a set of counters, each counter carrying coded horological data. Selected counter set data is multiplexed into a seven segment decoder. The decoder output is demultiplexed into memories, one for each of the segments in each of the display digits. The memories control segment drivers for the liquid crystal digital displays.