Patent ID: 7126402

Claim:
A timing signal generation apparatus comprising: a work area from which parameters are outputted in response to a control data; and a main core to which said parameters are inputted: wherein, into said work area, a first parameter and a second parameter are described; and said main core comprises: a first counter for counting a first reference clock as triggered by each pulse of a vertical synchronizing signal, a second counter for counting a second reference clock as triggered by each pulse of a horizontal synchronizing signal at the time of a first drive mode, a third counter for counting a third reference clock as triggered by each pulse of a the horizontal synchronizing signal at the time of a second drive mode, a first comparator for comparing a count value in said first counter with said first parameter and outputting a first control pulse in accordance with said count value of said first counter, a second comparator for comparing a count value in said second counter with said second parameter and outputting a second control pulse in accordance with said count value of said second counter, a third comparator for comparing a count value in said third counter with said second parameter and outputting a third control pulse in accordance with said count value of the third counter, and an output unit for selectively outputting said second control pulse or said third control pulse in response to the control data supplied from external.