Patent attributes
A key-press detection circuit for an information handling system includes a detector circuit, a RC circuit, and a latch circuit. The detector circuit is coupled to a keyboard matrix device, and operates to provides a clock signal in a first state when a particular key of the keyboard matrix device is pressed and to provide the clock signal in a second state when the particular key is not pressed. The RC circuit receives the clock signal and provides a timed clock signal in a third state for a predetermined amount of time in response to receiving the clock signal in the first state. After the predetermined amount of time, the RC circuit provides the timed clock signal in a fourth state. The latch circuit receives the timed clock signal at a clock input, receives a data signal at a data input, and latches an output signal in a same state as the data signal when the timed clock signal changes from the third state to the fourth state.
