Back to results
US 6,445,753 B1Granted
Method and circuit configuration for processing digital signals
AssigneeInfineon Technologies AG
InventorMartin Buck
Life of this patent
Estimating the term…
Abstract
A method and a circuit configuration deactivate an input of a receiving circuit when a first edge occurs, during processing of a digital input signal. When a falling edge occurs, the input is only reactivated after a delay. An influence of signal interference and incorrect interpretations of the signal can thereby be reduced. The method and circuit configuration are employed in particular with clock signals in which only one edge is used for signal evaluation.
Claims12
A method for processing a digital input signal, which comprises:
- assuming a first state of an activation signal upon an occurrence of a first edge of an input signal, and maintaining the first state at least for a predetermined holding time;
- assuming a second state of the activation signal differing from the first state after a delay of a predetermined delay time, upon an occurrence of a second edge of the input signal occurring after the holding time and differing from the first edge;
- and
- deriving a digital output signal from the input signal only when the activation signal is in the second state.
1 more element
A circuit configuration for processing a digital input signal, comprising:
- an activation circuit having an input side for receiving an input signal and an output side for supplying an activation signal, said activation circuit immediately changing an instantaneous state of the activation signal in the event of a rising edge of the input signal, then maintaining the instantaneous state at least for a duration of a holding time, and changing the instantaneous state in the event of a falling edge after a delay by a delay time;
- and
- an output circuit having a first input for receiving the input signal, a second input for receiving the activation signal and an output, said output circuit forwarding the input signal to said output only in the event of a specific state of the activation signal.
Dependencies are inferred from the claim text.