Title:
ELECTRONIC WATCH
Document Type and Number:
Japanese Patent JPS5353373
Kind Code:
A
Abstract:
PURPOSE: In an electronic watch having a high frequency crystal vibrator of more than 500K Hz in oscillation frequency, the highly accurate, inexpensive and semipermanently maintenance free watch is provided by using solar batteries, a logic regulation circuit and a perperual calendar.
Inventors:
OOTAKE TSUTOMU
Application Number:
JP12798776A
Publication Date:
May 15, 1978
Filing Date:
October 25, 1976
Export Citation:
Assignee:
SUWA SEIKOSHA KK
International Classes:
H03B5/32; G04C10/02; H01L31/04; H03K23/40; (IPC1-7): G04C3/00; H01L31/04; H03B5/30; H03K23/00