Patent ID: 6016169
Filing Date: 2000-01-18
Classification: H04N

Abstract:
A programmable frequency modulation circuit responsive to a video input signal, said frequency modulation circuit comprising:a programmable control circuit which generates a plurality of sets of control signals in response to a set of test data and mode selection signals, said plurality of sets of control signals comprising switching control signals and fusing selection signals;a fusing circuit operatively connected to said programmable control circuit which generates a plurality of fusing signals in response to said mode selection signals and said fusing selection signals;a data selection circuit operatively connected to said programmable control circuit and said fusing circuit being responsive to said mode selection signals wherein said data selection circuit selects and outputs said test data in accordance with said switching control signals during an adjusting mode, and wherein said data selection circuit selects and outputs said fusing signals during a fusing mode in accordance with said switching control signals; anda frequency modulation signal output circuit connected to said data selection circuit which generates said frequency modulation signal in response to said switching control signals.