TIMING CONTROL DEVICE, CAPABLE OF BEING USED FOR CONTROLLING TIMING OF AN INDEX SIGNAL OF A MAGNETIC DISK DEVICE OR AN OPTICAL DISK DEVICE SUCH AS FLOPPY-DISK DEVICE(FDD), OR A PG SIGNAL OF A VIDEO TAPE RECORDER(VTR OR VCR)

摘要

PURPOSE: A timing control device is provided to set coefficient counts by a digitally encoded input signal, and to perform a counting process by a counter clock signal, thereby setting a control time precisely corresponding to the input signal. CONSTITUTION: An A/D converter(10) receives an input signal, converts a level of the input signal into a digital signal, and outputs the digitalized input signal. A counter circuit(20) receives the digitalized input signal, a counter clock signal, and a trigger signal, and sets the number of coefficient counts according to the digitalized input signal. The counter circuit(20) starts counting the counter clock signal by the trigger signal, and outputs an output signal when a count of the counter clock signal arrives at the number of the coefficient counts.