US 4,101,838 AGranted

Clock pulse generating apparatus

AssigneeTokyo Shibaura Electric Co., Ltd.

InventorsMitsuo Aihara, Tsuneo Takase, Tetsuo Yamaguchi

Life of this patent

Estimating the term…

Loading patent…

Abstract

A clock pulse generating apparatus comprises a pulse generator for generating a pulse signal of a predetermined cycle, a frequency divider including a plurality of frequency division stages for frequency dividing an output pulse from the pulse generator, a circuit for subtracting at a predetermined ratio the number of clock pulses passing through a given frequency division stage in the frequency divider, a pulse control circuit including an external operation terminal for variably adding the number of pulses passing through another frequency division stage in the frequency divider, and a timing setting circuit for imparting a pulse subtracting timing and pulse adding timing to the pulse subtracting circuit and pulse control circuit, respectively.

Claims11

Dependent claims

A clock pulse generating apparatus comprising a pulse generator for generating a pulse signal of a predetermined cycle;

a frequency divider including a plurality of frequency division stages so as to frequency divide an output pulse of the pulse generator;
pulse subtracting means for subtracting at a predetermined ratio the number of pulses passing through one frequency division stage in the frequency divider;
pulse adding means for adding at a predetermined ratio the number of pulses passing through another frequency division stage in the frequency divider;
timing setting means for imparting an operation timing to said pulse subtracting means and said pulse adding means and control means including at least an external operation terminal for variably controlling at least one of the adding ratio of said pulse adding means and the subtracting ratio of said pulse subtracting means.

1 more element

Dependencies are inferred from the claim text.