FREQUENCY CORRECTION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a frequency correction circuit for precisely correcting a clock signal of an oscillation frequency with a simple structure without adjusting the oscillation frequency in an oscillation circuit.

SOLUTION: Into the TBC(time-base counter)10a of the frequency correction circuit, a supplied delay control signal 10h and a clock signal 10e are inputted to a count adjusting part 100. The count adjusting part 100 has an inversion gate 100a and an AND gate 100b. The delay control signal 10h is supplied to the inversion gate 100 and an output signal 100c from the inversion gate 100a and the clock signal 10e are supplied to the AND gate 100b. The AND gate 100 supplies the clock signal 10e deleted by one clock as a clock signal of a T-type flip flop in an initial stage in a clock dividing part 102 while the delay control signal 10h is in a level H and outputs an output signal 10f.

COPYRIGHT: (C)2004,JPO