US 4,224,789 AGranted

Electronic timepiece

AssigneeKabushiki Kaisha Daini Seikosha

InventorsSeiko Sasaki, Kazuhiro Asano

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Abstract

An electronic timepiece circuit including a data memory for storing time information and display information, and an operating circuit which renews the data stored in the data memory circuit. A program memory circuit stores a sequential program for determining generation of control signals supplied to the data memory circuit and the operating circuit. Two different command data systems are stored in the program memory circuit. One command data system consists of controlling commands which carry out time counting, time setting and display functions, and for pointing addresses in the data memory circuit. The other command data system consists of commands for judging conditions, for pointing addresses of the data memory and for pointing the jump address of the programs stored in the program memory circuit.

Claims3

Dependent claims

A circuit for an electronic timepiece comprising:

a data memory circuit which stores time information and display information;
operating circuit means which renews data stored in said data memory circuit;
a display means having a decoder circuit, a latch circuit and a driver circuit for displaying renewed data;
control circuit means for generating control signals supplied to said data memory circuit, said operating circuit and said display means;
a program memory circuit which stores a sequential program of said control signals;
a program counter for carrying out said program stored in said program memory circuit;
a timing pulse generating circuit which supplies timing pulses to said control circuit means, said program memory circuit, said program counter, said operating circuit means, said data memory circuit and said decoder for operating each said circuit;
an oscillating and dividing circuit which supplies standard pulses to said timing pulse generating circuit;
and a switching circuit which is connected to switches operable for applying switching signals to operate said control circuit means.

6 more elements

Dependencies are inferred from the claim text.