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| Number | Title | Issue Date |
| RE42301 | Robust signal transmission in digital television broadcasting A data field of transmitted digital television signals includes a first set of A/53-compliant data segments that convey payload information and further includes a second set of A/53-compliant data segments that contain parity bytes for transverse Reed-Solomon forwar... | 04/19/2011 |
| 7877662 | Reverse concatenation for product codes A system is provided to encode data for recording onto media whereby modulation and linear constraints from a concatenated code or product code are imposed. A first array of unencoded user data is generated. Each row is modulation encoded to enforce a first modulati... | 01/25/2011 |
| 7873894 | Reverse concatenation for product codes Method and computer program product are provided to encode data for recording onto media whereby modulation and linear constraints from a concatenated code or product code are imposed. A first array of unencoded user data is generated. Each row is modulation encoded... | 01/18/2011 |
| 7617435 | Hard-decision iteration decoding based on an error-correcting code with a low undetectable error probability A decoding system decodes forward error correction (FEC) encoded data. Factor graph circuitry (such as trellis decoder circuitry) processes the FEC encoded data according to at least one factor graph. Order restoring circuitry (such as convolutional deinterleaver ci... | 11/10/2009 |
| 7549107 | Interleaved reed solomon coding for home networking A method of transmitting data packets over a non-dedicated local area network channel susceptible to random burst and/or white gaussian noise channel errors. Each data packet is encoded to form an error correctable encoded data packet, which is then interleaved, mod... | 06/16/2009 |
| 7509558 | Error correction method for reed-solomon product code A method and apparatus for error correction of an encoded data stream. A demodulated data stream is saved in an input buffer. A first correction process is performed on-the-fly in the input buffer. The data is transferred to an external SDRAM after correction. A dat... | 03/24/2009 |
| 7461321 | Error detection A data communications architecture employing serializers and deserializers that reduces data communications latency. In an illustrative implementation, the data communications architecture communicates data across communications links. The architecture maintains var... | 12/02/2008 |
| 7441163 | Method of recording/reproducing digital data and apparatus for same A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recordin... | 10/21/2008 |
| 7434138 | Structured interleaving/de-interleaving scheme for product code encoders/decorders A structured interleaving/de-interleaving scheme enables efficient implementation of encoding/decoding based on two-dimensional product codes (2D PC). In one embodiment, an encoder has an integrated architecture that performs structured interleaving and PC coding in... | 10/07/2008 |
| 7434139 | Remote module for a communications network Determination of the location of an error condition or a failure includes receiving at a network interface a first framed digital signal from customer premises equipment, and determining whether the first framed digital signal indicates a failure. Overhead bits are ... | 10/07/2008 |
| 7430701 | Methods and systems for generating error correction codes Methods and systems for generating ECC encode a data block to generate corresponding error correction codes. A first buffer sequentially stores a first section and a second section of the data block, wherein each of the first and second sections is composed of X dat... | 09/30/2008 |
| 7421624 | Data recovery apparatus and method used for flash memory A data recovery apparatus and method used for a flash memory, which can recover data damaged or lost when power supplied to the flash memory is cut off while data operations are being consecutively performed on at least one data stored in the flash memory. The data ... | 09/02/2008 |
| 7421627 | Method of recording/reproducing digital data and apparatus for same A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recordin... | 09/02/2008 |
| 7421044 | Quasi error free (QEF) communication using turbo codes Quasi error free method and system are presented for encoding and decoding information using turbo codes as an inner code in conjunction with an algebraic outer code linked by an interleaver. This combination of outer algebraic code and turbo inner code linked by an... | 09/02/2008 |
| 7421626 | Method of recording/reproducing digital data and apparatus for same A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recordin... | 09/02/2008 |
| 7418649 | Efficient implementation of reed-solomon erasure resilient codes in high-rate applications A high-rate Reed-Solomon erasure resilient codes (ERC) system and method for generating and implementing Reed-Solomon erasure-resilient codes for use in high-rate applications. High-rate applications are applications where the number of coded messages is significant... | 08/26/2008 |
| 7408999 | Method and system for dynamic interleaver adaptation scheme in VDSL The present invention provides a method and apparatus for a new interleaver adaptation scheme that achieves “error free” and zero delay (interleaving—triangular) or near zero delay variation (interleaving—GCI), and with easier implementation but no additiona... | 08/05/2008 |
| 7406091 | Distribution of communications between paths Distributing communications between paths, comprises providing a plurality of destinations, providing a plurality of communications paths such that each of the plurality of destinations can be accessed over each of the plurality of communications paths, defining des... | 07/29/2008 |
| 7406636 | Method of recording/reproducing digital data and apparatus for same A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recordin... | 07/29/2008 |
| 7401228 | Method for transmitting data, apparatus for recording data, medium for recording data, and apparatus for reproducing data A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information higher. The data transmitting apparatus includes an err... | 07/15/2008 |
| 7373582 | Apparatus and method for turbo decoding using a variable window size An apparatus and method for turbo decoding using a variable window size. A control logic block receives information about a code rate of received data bits and a data block size, adjusts a window size according to the code rate information, and computes an initial d... | 05/13/2008 |
| 7373584 | Semiconductor memory device and error correction method thereof A semiconductor memory device includes a memory array having a data area and a check code area and a refresh control for controlling a refresh operation in a data holding state. The device also includes an operation system for executing an encoding operation for gen... | 05/13/2008 |
| 7356753 | Method and apparatus for error code correction A method and apparatus for ECC (error code correction) adopts a first directional first decoding, a first directional second decoding with a greater error tolerant ability than the first directional first decoding, a second directional first decoding, and a second d... | 04/08/2008 |
| 7356752 | Enhanced turbo product codes A hyper encoder module encodes a block of data having a plurality of sub-blocks. Each sub-block includes a plurality of systematic block code codewords. A parity sub-block is added to the block. The parity sub-block is a first sub-block rotated by a predetermined nu... | 04/08/2008 |
| 7343472 | Processor having a finite field arithmetic unit utilizing an array of multipliers and adders A processor includes an instruction memory, arithmetic logic unit, finite field arithmetic unit, at least one digital storage device, and an instruction decoder. The instruction memory temporarily stores an instruction that includes at least one of: an operational c... | 03/11/2008 |
| 7340667 | Method and/or apparatus implemented in hardware to discard bad logical transmission units (LTUs) The present invention concerns an apparatus comprising a logic circuit, a compare circuit, a control circuit and a memory interface. The logic circuit may be configured to generate a check signal in response to (i) a data signal having a series of logical transmissi... | 03/04/2008 |
| 7340663 | Method and apparatus for embedding an additional layer of error correction into an error correcting code A method of embedding an additional layer of error correction into an error correcting code, wherein information is encoded into code words of said code over a first Galois field and wherein a number of code words are arranged in the columns of a code block comprisi... | 03/04/2008 |
| 7339878 | Method and apparatus for recording optical information including dummy data, and optical disk having such data recorded thereon A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the block includes a predetermined number of sectors and is a data unit in... | 03/04/2008 |
| 7328397 | Method for performing error corrections of digital information codified as a symbol sequence A method and system for making error corrections on digital information coded as symbol sequences, for example digital information stored in electronic memory systems or transmitted from and to these systems is described, provides the transmission of sequences incor... | 02/05/2008 |
| 7328395 | Iterative Reed-Solomon error-correction decoding Systems and methods are provided to correct errors occurring in a decision-codeword that is generated by a detector. A decoder determines whether errors in the decision-codeword are of a degree that exceeds the correction capability of a Reed-Solomon error-correctio... | 02/05/2008 |
| 7320101 | Fast parallel calculation of cyclic redundancy checks Circuits, methods, and apparatus for the fast parallel calculation of CRCs. One embodiment provides a feedforward path that combines common terms to simplify input logic. Common expressions that appear in multiple terms in the feedforward path are implemented using ... | 01/15/2008 |
| 7315500 | Recording medium storing link information and apparatus and method for linking data An optical recording medium storing information for regarding data in the current sector as data in a linking loss area, and an apparatus and method providing linking data. The data link method includes dividing an error correction code block having a predetermined ... | 01/01/2008 |
| 7305606 | Method of recording/reproducing digital data and apparatus for same A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recordin... | 12/04/2007 |
| 7289530 | System and method for coding a digital wrapper frame A system and method are provided for coding a frame in a packet communications system using a G.709 Digital Wrapper Frame format. The method comprises: accepting digital information; outer encoding the digital information with a Reed Solomon (RS) encoding scheme; in... | 10/30/2007 |
| 7287207 | Method and apparatus for computing parity characters for a codeword of a cyclic code A method for computing parity characters for a codeword of a cyclic code successively generates a sum of an output value and a respective message character of a first message section adjacent to parity characters within a first block. The method then successively mu... | 10/23/2007 |
| 7281175 | Readout controlling apparatus, reproducing apparatus, recording apparatus, and readout controlling method A readout controlling apparatus for controlling reading conditions at the time of reading data coded in units of predetermined code blocks from a recording medium capable of performing error correction at a high reliability even when the playback conditions are poor... | 10/09/2007 |
| 7281196 | Single error Reed-Solomon decoder The error offset and the error magnitude of a data stream in a Read-Solomon code is calculated using the same architecture. The advantage this method has over previous techniques is its simplicity of design and the minimum steps required to convert the syndrome info... | 10/09/2007 |
| 7277498 | Mapping method of code word with QAM modulation In the code word mapping operation of a radio communication system, mapping patterns are provided for different S/N ratios, the code word bits produced from a coder are not equally assigned to multi-level modulation bits, but weighted according to the resistance of ... | 10/02/2007 |
| 7272105 | Method and apparatus for recording optical information, and optical disk A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the block includes a predetermined number of sectors and is a data unit in... | 09/18/2007 |
| 7266748 | Method and apparatus for correcting C1/PI word errors using error locations detected by EFM/EFM+ decoding A method and system for error correcting C1/PI words using error locations detected by EFM/EFM+ decoder are provided. The method for channel decoding and error correcting includes: (a) setting up a channel code; (b) producing demodulated data including inform... | 09/04/2007 |
