Class 368/56 - By signal frequency change

Subclass of Class 368 - Horology: time measuring systems or devices
Definition: Subject matter wherein the synchronizing is accomplished
No. of patents: 4
Last issue date: 04/01/2008

Number	Title	Issue Date
7352655	Method and apparatus for automatic time correction of a mechanical clock A mechanical clock arrangement includes a linkage apparatus rotatingly driving an hour hand and/or a minute hand of a mechanical clock. A sensing device senses a time of day displayed by the mechanical clock. A control device is in communication with both the sensin...	04/01/2008
4899117	High accuracy frequency standard and clock system A high accuracy atomic frequency standard and clock which utilizes a micrmputer. The microcomputer compensates for aging and temperature variations in the atomic standard and its slave crystal oscillator and generates an error signal which is used to eit...	02/06/1990
4178750	Control circuit for electronic timepiece A control circuit for an electronic timepiece in which a digit selection switch is connected to a timer circuit which generates an output signal only when the digit selection switch is actuated for a given interval of time. An output signal generation mea...	12/18/1979
4175376	Device for correcting time indication and the like in an electronic clock An electronic clock having a clock circuit in which reference clock pulses are frequency divided so as to be applied to a time indicating device for stepwise switching the time indication therein one by one unit of time for indicating the time, and the ti...	11/27/1979

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