Providing additional inputs to a latch circuit

Details Providing additional inputs to a latch circuit Providing additional inputs to a latch circuit

2009-09-18

2011-11-29

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S199000, C327S230000

Reexamination Certificate

active

08067971

ABSTRACT:
A latch circuit for retaining and transmitting an input data value is disclosed, along with a memory, and a method for retaining and transmitting data. The latch circuit includes a primary input for receiving a data value, an output for outputting the data value, a data transmission path including a transmitting device for transmitting the data value from the primary input to the output, a feedback loop for retaining the data value, the feedback loop including the transmitting device and a further device. The further device is configured to turn on in response to assertion of an activating signal and to turn off in response to no assertion of the activating signal. The feedback loop not retaining data when the further device is turned off, and the feedback loop further including a multiplexer, and the multiplexer is configured to connect either the data transmitting device to the further device and form the feedback loop or to connect a secondary input to the further device and form a secondary data transmission path from the secondary input through the further device and the transmitting device to the output.

REFERENCES:
patent: 5557225 (1996-09-01), Denham et al.
patent: 6501315 (2002-12-01), Nguyen
patent: 7180348 (2007-02-01), Frederick et al.
patent: 7315191 (2008-01-01), Branch et al.
patent: 7414449 (2008-08-01), Russell et al.
patent: 7649393 (2010-01-01), Maeda

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