Patent ID: 6486924
Filing Date: 2002-11-26
Classification: H04N

Abstract:
A television signal switching circuit, the television signal switching circuit comprising:a switching control circuit, the switching control circuit outputting a first switching control signal, the switching control signal having a first state and a second state; a first switching circuit, the first switching circuit including an input, a first output and a second output, the input of the first switching circuit being responsive to a television signal, the first output of the first switching circuit being coupled to an amplification signal path, the second output of the first switching circuit being coupled to a unity gain signal path, the first switching circuit being responsive to the first switching control signal, the first switching circuit coupling the input of the first switching circuit to the first output of the first switching circuit in response to the first switching control signal being in the first state, the first switching circuit coupling the input of the first switching circuit to the second output of the first switching circuit in response to the first switching control signal being in the second state; and a second switching circuit, the second switching circuit including a first input, a second input and an output, the first input of the second switching circuit being coupled to the amplification signal path, the second input of the second switching circuit being coupled to the unity gain signal path, the second switching circuit being responsive to the first switching control signal, the second switching circuit coupling the first input of the second switching circuit to the output of the second switching circuit in response to the first switching control signal being in the first state, the second switching circuit coupling the second input of the second switching circuit to the output of the second switching circuit in response to the first switching control signal being in the second state.