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| Number | Title | Issue Date |
| 4665537 | Data transmission method employing three-dimensional matrices including check words A data transmission method in which both random errors and burst errors in data transmission are correctable. A block of data is written at three-dimensional addresses in a memory in a predetermined writing order such that a three-dimensional data arrange... | 05/12/1987 |
| 4649541 | Reed-Solomon decoder A Reed-Solomon decoder with dedicated hardware for five sequential algorithms is provided with overall pipelining by memory swapping between input, processing and output memories, and internal pipelining through the five algorithms. The code definition to... | 03/10/1987 |
| 4646303 | Data error detection and correction circuit In a digital system, there is provided a circuit for detecting and correcting errors in a group of data using Reed-Solomon codes. The group of data is first stored in a memory, and syndromes of the data are produced by a syndrome calculation circuit and f... | 02/24/1987 |
| 4642808 | Decoder for the decoding of code words which are blockwise protected against the occurrence of a plurality of symbol errors within a block by means of a reed-solomon code, and reading device for optically readable record carriers A decoding system for code words which are protected against the occurrence of a plurality of symbol errors within a code word by means of a Reed-Solomon code. After the formation of the syndrome symbols, the key equation is solved, assuming the least pos... | 02/10/1987 |
| 4637022 | Internally register-modelled, serially-bussed radio system In accordance with the present invention, there is provided a register-modelled radio system comprising a plurality of register-modelled processors having addressable registers for modelling the virtual state of the processor; a serial bus, interconnectin... | 01/13/1987 |
| 4633470 | Error correction for algebraic block codes Error correction for polynomial block codes is achieved without prior evaluation of power sum symmetric functions. The received word R (z) is reduced mod G (z), the generator of the code and a function F (z) of error locator polynomial W(z), errata values... | 12/30/1986 |
| 4627058 | Code error correction method An improved method of code error correction is disclosed, for detection and correction of errors in data words or check words of a block of data after transmission-reception or recording-reproduction of the data. The method is of the type in which the dat... | 12/02/1986 |
| 4584686 | Reed-Solomon error correction apparatus Disclosed is a Reed-Solomon error correction apparatus which is programmable to perform several distinct error correction functions. The apparatus performs the following functions: encoding, error detection, syndrome generation, burst error trapping, and ... | 04/22/1986 |
| 4567594 | Reed-Solomon error detecting and correcting system employing pipelined processors Apparatus and methods are disclosed for providing on-line error detection and correction of errors in an optical disk storage system using Reed-Solomon decoding techniques. An implementation is employed which divides the Reed-Solomon decoding process into... | 01/28/1986 |
| 4564945 | Error-correction code for digital data on video disc Data for recordation on a video disc is given multi-redundancy at block, field and group levels. Raw data is filled typically serially row by indexed row of 8-bit words with at least one and preferably 3 words being auxiliary check words derived from the ... | 01/14/1986 |
| 4562577 | Shared encoder/decoder circuits for use with error correction codes of an optical disk system A shared encoder/decoder circuit for use with a Reed-Solomon coding scheme of an optical disk storage system. The optical disk system includes a drive adapted to permanently store data on a removable platter. Prior to recording a data byte on the platter,... | 12/31/1985 |
| 4555784 | Parity and syndrome generation for error detection and correction in digital communication systems A parity and/or syndrome generator generates a block parity check for the detection and/or correction of errors in a multi-channel digital data communication system using a linear code or a coset of such code in which data and parity bytes are intended to... | 11/26/1985 |
| 4413339 | Multiple error detecting and correcting system employing Reed-Solomon codes An error detecting and correcting system implementing the Reed-Solomon (1023, 1006) code having code words whose symbols are elements in the Galois field GF(210) generated by either the primitive polynomial x10 +x3 +1 or x... | 11/01/1983 |
| 4335458 | Memory incorporating error detection and correction A memory in which each word location for a user word not only contains the bit locations for the actual data but also one parity bit for the parity over the entire word location and one correction bit. A fixed number of word locations are grouped to form ... | 06/15/1982 |
| 4162480 | Galois field computer Errors are corrected in a cyclic encoded data stream, consisting of sequential groups of data bits and check bits, by means of a novel digital computer. The computer employs a stored program and is organized into three distinct substructures, each having ... | 07/24/1979 |
| 4142174 | High speed decoding of Reed-Solomon codes This specification covers a simplified and high speed decoding scheme for Reed-Solomon codes capable of correcting up to three symbol errors in code words made up of k data and n-k check symbols where each symbol consists of m binary bits of information. ... | 02/27/1979 |
| 4020461 | Method of and apparatus for transmitting and receiving coded digital signals A system for transmitting digital information such as audio or video over a lossy or dispersive medium. The digital information is of the type where certain bits are more important than others and hence the less important bits can suffer a greater bit err... | 04/26/1977 |
