Circuit and method for calculating a logical combination of...

Electronic digital logic circuitry – Function of and – or – nand – nor – or not – Field-effect transistor

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C326S093000, C326S098000, C326S114000, C326S115000, C326S121000

Reexamination Certificate

active

07342423

ABSTRACT:
A circuit for calculating a logical combination of two input operands includes a first input for receiving a first dual rail signal having data values of the first input in a calculation cycle and precharge values in a precharge cycle, a second input for receiving a second dual rail signal having data values of the second input in the calculation cycle and precharge values in the precharge cycle, and an output for outputting a third dual rail signal having result values in the calculation cycle and precharge values in the precharge cycle. Furthermore, the circuit has a logic circuit for determining the result values according to the logical combination from the data values of the first input and the second input and for outputting the result values in the calculation cycle at the output, and a precharge circuit designed to impress precharge values in the output already when precharge values are detected at a single input, or designed to terminate impressing the precharge values only when the first dual rail signal and the second dual rail signal have data values.

REFERENCES:
patent: 6043674 (2000-03-01), Sobelman
patent: 6066965 (2000-05-01), Blomgren et al.
patent: 6509761 (2003-01-01), Taki
patent: 6717438 (2004-04-01), Choe
patent: 2002/0101262 (2002-08-01), Taki
patent: 103 44 647 (2005-02-01), None
Stefan Mangard, et al., “Side-Channel Leakage of Masked CMOS Gates,” Institute for Applied Information Processing and Communications, Graz, Austria, Feb. 18, 2005.
Thomas Popp, et al., “Masked Dual-Rail Pre-Charge Logic: DPA-Resistant Circuits without Routing Constraints,” Institute for Applied Information Processing and Communications, Graz, Austria, Feb. 11, 2005.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Circuit and method for calculating a logical combination of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and method for calculating a logical combination of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method for calculating a logical combination of... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2807024

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.