Patent ID: 6775526
Filing Date: 2004-08-10
Classification: H03K

Abstract:
A system that filters an input signal, said system comprising:a switch having first and second settings, operable to maintain the first setting in response to a first state of the input signal, and operable to maintain the second setting in reponse to a second state of the input signal; a gate having an output and first and second inputs with the first input coupled to receive the input signal, the output of the gate comprising a default signal when the second input receives one of a first range of states, the output of the gate having the same state as the input signal when the second input receives one of a second range of states; a first circuit connected to the second input of the gate when the switch maintains the first setting, the first circuit causing the the second input of the gate to eventually receive one of the first range of states; and a second circuit connected to the second input of the gate when the switch maintains the second setting, the second circuit causing the the second input of the gate to eventually receive one of the second range of states.