


Class Information
Number: 708/492
Name: Electrical computers: arithmetic processing and calculating > Electrical digital calculating computer > Particular function performed > Arithmetical operation > Galois field
Description: Subject matter where the arithmetical operations are performed on a 2 m element finite arithmetic field.
Patents under this class:
Patent Number 
Title Of Patent 
Date Issued 
5448639 
Digital signature device 
Sep. 5, 1995 
5448510 
Method and apparatus for producing the reciprocal of an arbitrary element in a finite field 
Sep. 5, 1995 
5446745 
Apparatus for correcting errors in optical disks 
Aug. 29, 1995 
5442578 
Calculating circuit for error correction 
Aug. 15, 1995 
5414719 
Operating circuit for galois field 
May. 9, 1995 
5396502 
Singlestack implementation of a ReedSolomon encoder/decoder 
Mar. 7, 1995 
5379243 
Method and apparatus for performing finite field division 
Jan. 3, 1995 
5367478 
Mutual division circuit 
Nov. 22, 1994 
5367479 
Divider device to divide a first polynomial by a second one 
Nov. 22, 1994 
5272661 
Finite field parallel multiplier 
Dec. 21, 1993 
5227992 
Operational method and apparatus over GF(2.sup.m) using a subfield GF(2.sup . 
Jul. 13, 1993 
5210710 
Modulo arithmetic processor chip 
May. 11, 1993 
5206824 
Method and apparatus for exponentiation over GF(2.sup.n) 
Apr. 27, 1993 
5185711 
Apparatus for dividing elements of a finite galois field and decoding error correction codes 
Feb. 9, 1993 
5148480 
Decoder 
Sep. 15, 1992 
5136592 
Error detection and correction system for long burst errors 
Aug. 4, 1992 
5101431 
Systolic array for modular multiplication 
Mar. 31, 1992 
5046037 
Multiplieradder in the Galois fields, and its use in a digital signal processing processor 
Sep. 3, 1991 
4994995 
Bitserial division method and apparatus 
Feb. 19, 1991 
4989171 
Data processing method and apparatus for calculating a multiplicatively inverted element of a finite field 
Jan. 29, 1991 
4975867 
Apparatus for dividing elements of a Galois Field GF (2.sup.QM) 
Dec. 4, 1990 
4918638 
Multiplier in a galois field 
Apr. 17, 1990 
4891781 
Modulo arithmetic processor chip 
Jan. 2, 1990 
4890252 
Long period pseudo random number sequence generator 
Dec. 26, 1989 
4866654 
Digital multiplying circuit 
Sep. 12, 1989 
4847801 
Compact galois field multiplier 
Jul. 11, 1989 
4800515 
Circuit for operating finite fields 
Jan. 24, 1989 
4797848 
Pipelined bitserial Galois Field multiplier 
Jan. 10, 1989 
4745568 
Computational method and apparatus for finite field multiplication 
May. 17, 1988 
4697248 
Arithmetic circuit for obtaining the vector product of two vectors 
Sep. 29, 1987 
4587627 
Computational method and apparatus for finite field arithmetic 
May. 6, 1986 
4574361 
Apparatus for dividing the elements of a Galois field 
Mar. 4, 1986 
4567568 
Apparatus for dividing the elements of a Galois field 
Jan. 28, 1986 
4538240 
Method and apparatus for performing hashing operations using Galois field multiplication 
Aug. 27, 1985 
4473887 
Processing circuit for operating on elements of a Galois field 
Sep. 25, 1984 
4251875 
Sequential Galois multiplication in GF(2.sup.n) with GF(2.sup.m) Galois multiplication gates 
Feb. 17, 1981 
4162480 
Galois field computer 
Jul. 24, 1979 
4099160 
Error location apparatus and methods 
Jul. 4, 1978 
4037093 
Matrix multiplier in GF(2.sup.m) 
Jul. 19, 1977 


