Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2006-01-17
2006-01-17
Tran, Anh Q. (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S038000, C326S046000
Reexamination Certificate
active
06987401
ABSTRACT:
A programmable logic device (PLD) includes a compare-select circuitry. The compare-select circuitry includes logic elements 1 through N. Each logic element comprises a compare circuitry and a selector circuitry. The compare circuitry compares two inputs of the logic element and generates a compare output signal of the logic element. The selector circuitry provides one of the two inputs of the logic element as an output in response to a selection signal. The selection signal for all logic elements (i.e., logic elements 1 through N) constitutes the compare output signal of the Nth logic element. A median-calculation apparatus is also disclosed. The median-filter apparatus includes at least one insertion-sort circuitry. The at least one insertion-sort circuitry performs insertion-sorting of a set of input numbers corresponding to that insertion-sort circuitry to generate a corresponding set of sorted numbers. Each of the sorted set of numbers includes a median value of the corresponding set of input numbers.
REFERENCES:
patent: 5408675 (1995-04-01), Florentino et al.
patent: 5532948 (1996-07-01), Kohno et al.
patent: 5900006 (1999-05-01), Yoon
Copending U.S. Appl. No. 10/212,487, filed Aug. 5, 2002, “Method And Apparatus For Implementing A Viterbi Decoder,” (ALT.P004).
Copending U.S. Appl. No. 10/331,707, filed Dec. 30, 2002, “Method And Apparatus For Implementing A Multiple Constraint Length Viterbi Decoder,” (ALT.P013).
John Smith, “Implementing Median Filters In XC4000E PFGAs,” Design Hints and Issues, Xilinx, (available on the Internet before the filing of the present patent application), 1 pg., no date.
Altera, Apex 20K, “Programmable Logic Device Family,” Data Sheet, Ver. 4,3, Feb. 2002, pp. 1-116.
Altera, Apex 20KC, “Programmable Logic Device,” Data Sheet, Ver. 2.1, Apr. 2002, pp. 1-87.
Graham Jonah
Langhammer Martin
Altera Corporation
O'Keefe Egan & Peterman, LLP
Tran Anh Q.
LandOfFree
Compare, select, sort, and median-filter apparatus in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compare, select, sort, and median-filter apparatus in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compare, select, sort, and median-filter apparatus in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3582446