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Class 714/779 - Variable length data


Subclass of Class 714 - Error detection/correction and fault detection/recovery
Definition: Subject matter where the number of bits in a data word is
No. of patents: 103
Last issue date: 04/10/2012


1      
NumberTitleIssue Date
8156408Decoding apparatus, decoding method, and storage medium
A decoding apparatus acquires, from encoded data, a piece of additional bits that have been partly cut off, acquires, from the piece of the additional bits, the number of bits that are missing due to the cutting off as the number of missing bits, and restores the ad...
04/10/2012
RE43231System and method for joint source-channel encoding, with symbol, decoding and error correction
Disclosed is a A system and method for joint source-channel encoding, symbol decoding and error correction, preferably utilizing an arithmetic encoder with operational error detection space; and a combination sequential, and arithmetic, encoded symbol decoder struct...
03/06/2012
7987410Systems and methods for decreasing latency in a digital transmission system
Disclosed herein are various embodiments of methods, systems, and apparatus for encoding OFDM packets in a digital communication system. In one exemplary method embodiment, LDPC codewords in an IEEE 802.11 wireless transmission are shortened, decreasing the iteratio...
07/26/2011
7945842Method and apparatus for rateless source coding with/without decoder side information
A method of and system for rateless source coding are disclosed. The method comprises the steps of providing a set of low-density parity check (LDPC) codes, each of which accepts a range of data input lengths and a range of target compression rates; identifying a da...
05/17/2011
7861145Method and system for encoding or decoding a sequence of digital data
A method is provided for encoding and decoding a sequence of digital data, according to which a portion of the sequence of digital data corresponds to a data block that includes several data packets, at least two data packets per data block containing an identifier....
12/28/2010
7814397Intelligent error checking method and mechanism
An intelligent streaming media error check detection method and apparatus. The claimed invention discloses an apparatus and method where all streaming media are initially assumed to have compatible error checksums. A parameter W is initialized to zero. The parameter...
10/12/2010
7747929Apparatus and method for coding/decoding block low density parity check code with variable block length
Disclosed is a device and procedure for coding a block low density parity check (LDPC) code having a variable length. The a device and procedure includes receiving an information word; and coding the information word into a block LDPC code based on one of a first pa...
06/29/2010
7698622Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium
An ECC block is constituted by RS(248, 216, 33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of ...
04/13/2010
7613986Information recording device and method, information reproducing device and method, recording medium, program, and disc recording medium
An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16...
11/03/2009
7581155Apparatus for FEC supporting transmission of variable-length frames in TDMA system and method of using the same
An apparatus for transmitting a FEC frame is provided. In order to correct an error caused by a transmission medium using FEC in a Reed-Solomon code type, FEC encoding/decoding of a frame is performed. A total transmission delay time is not influenced when FEC is by...
08/25/2009
7509563Flexible forward error correction
A forward error correction method including inserting at least one filler symbol into an input data stream at a pre-determined position, thereby generating a precoded symbol group, FEC encoding the precoded symbol group, thereby generating a code word, removing at l...
03/24/2009
7506237Reconfigurable bit-manipulation node
A reconfigurable bit-manipulation node is disclosed that includes an execution unit configured to perform a number of bit-oriented functions and a control unit configured to control the execution unit to allow one of the bit-oriented functions to be performed. The e...
03/17/2009
7487430Apparatus and method for receiving packet data control channel in a mobile communication system
An apparatus and method for receiving control information transmitted from a transmitter using one of a plurality of slot lengths in a high-speed packet transmission mobile communication system is provided. The apparatus and method includes a decoder adapted to rece...
02/03/2009
7480850Method of writing data and channel adapter
A method of writing data includes receiving a record of a variable-length data format, creating a field-checking code for each field of the record received, creating a block-checking code in units of the fixed-length data for the data received, and writing data by r...
01/20/2009
7475328Loop status monitoring apparatus
A loop status monitoring apparatus monitors a status of an arbitration loop that includes a plurality of devices and a switch that controls connections between the devices, has at least one of loop status detection data, primitive detection data, and frame count dat...
01/06/2009
7451382Apparatus and method for generating (n,3) code and (n,4) code using simplex codes
An apparatus and method for generating a (n, 3) code and a (n, 4) code using simplex codes are disclosed. To encode a 3-bit information bit stream to a (n, 3) codeword with n code symbols, a simplex encoder generates a first-order Reed-Muller codeword with (P+1) cod...
11/11/2008
7434146Denoising and error correction for finite input, general output channel
Systems and methods are disclosed for denoising for a finite input, general output channel. In one aspect, a system is provided for processing a noisy signal formed by a noise-introducing channel in response to an error correction coded input signal, the noisy signa...
10/07/2008
7426680Apparatus and method for transmitting TFCI bits for a hard split mode in a CDMA mobile communication system
An encoding method and apparatus for a DCH (Dedicated Channel) encoder and a DSCH (Downlink Shared Channel) encoder in a transmitter for a mobile communication system including the DCH encoder for encoding k bits among 10 input TFCI (Transport Format Combination Ind...
09/16/2008
7426686System and method for verifying data integrity
A system for verifying data integrity includes a central processing unit (CPU) (1), a non-volatile random access memory (NVRAM) (2), and a program memory (3). The NVRAM includes: a plurality of data blocks (23), each data block including ...
09/16/2008
7426677Layered multiple description coding
A data sequence may be encoded in a plurality of layers of multiple description coding. The layers of multiple description coding may include a first and a second layer of multiple description coding. The first layer of multiple description coding may include an ini...
09/16/2008
7421641Intelligent error checking method and mechanism
An intelligent streaming media error check detection method and apparatus. The claimed embodiment discloses an apparatus and method where all streaming media are initially assumed to have compatible error checksums. A parameter W is initialized to zero. The paramete...
09/02/2008
7415658Forward error correction mapping and de-mapping techniques
Briefly, techniques to provide varying levels of enhanced forward error correction without modifying a line rate of a frame. ...
08/19/2008
7415656Techniques to preserve bandwidth in a communication system
A method and apparatus to preserve bandwidth in a communication system are described wherein a receiver receives a first frame of transport blocks from a mobile device and an error detection module connected to the receiver detects whether each transport block conta...
08/19/2008
7401134Packet processing architecture
A system for processing data packets comprising a plurality of data processing blocks and a controller, which allows the configuration parameters used in processing the data blocks to be updated in each data processing blocks at the data packet boundary. The present...
07/15/2008
7398451Error correction process and mechanism
Performing soft error correction includes receiving a word at a soft correction engine capable of operating in more than one correction mode, identifying soft bit positions within the word, and automatically generating a number of possible results for the received w...
07/08/2008
7395490LDPC decoding methods and apparatus
A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. Each command of a relatively simple...
07/01/2008
7376882Adaptable channel compensation for reliable communication over fading communication links
A method for reducing fading channel signal data loss for serial data rates up to approximately 10 gigabits per second includes sequentially distributing serial data to multiple encoders. Individual data bytes are sent from the encoders to a convolutional interleave...
05/20/2008
7346832LDPC encoding methods and apparatus
A flexible and relatively hardware efficient LDPC encoder is described. The encoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the encoding process. Each command of a relatively simple...
03/18/2008
7340666Method and apparatus for using memory compression to enhance error correction
A system for improving a memory's error detecting and error correcting capabilities. During operation, the system receives a data-word. Next, the system compresses the data-word into a compressed-word. If the amount of compression is greater than or equal to a compr...
03/04/2008
7328396Cyclic redundancy check generating circuit
A circuit, a method, and a method of designing the circuit, the circuit including: multiple W-bit packet data slice latches; a data partition comprising multiple data XOR subtree levels and having data latches between the data XOR subtree levels; a remainder partiti...
02/05/2008
7302632Method and system for the protection of data with a header in a transmission system
In a method to protect and/or detect information in a data transmission system, the pieces of data exchanged have a format comprising one or more headers and a data zone. The method comprises at least one step for the insertion, into at least one header, of at least...
11/27/2007
7266755Method and device for building a variable length error-correcting code
The invention relates to a variable-length error-correcting (VLEC) code construction method, in which the main steps are: defining all the needed parameters, generating a code having a fixed length L1, storing in a set W thus obtained all the possible L1
09/04/2007
7260765Methods and apparatus for dynamically reconfigurable parallel data error checking
In a first aspect, a first method is provided. The first method includes the steps of (1) transmitting data on a bus, wherein data is presented on the bus using varying widths; (2) configuring a cyclic redundancy check (CRC) to be performed on the data based on the ...
08/21/2007
7260764Multi-channel transmission and reception with block coding in a communication system
Techniques for transmitting and receiving multiple channels with block coding in a communication system are disclosed. In one aspect, a secondary broadcast channel is transmitted concurrently with parity information, encoded from a primary broadcast channel. In anot...
08/21/2007
7240273Cyclic redundancy check modification for message length detection and error detection
In a method for a variable-length communications system including encoding a message and decoding a data bit stream, the message includes a plurality of message blocks. A message block of the message is encoded by generating a parity check bit stream, flipping the p...
07/03/2007
7222285Layered multiple description coding
A data sequence may be encoded in a plurality of layers of multiple description coding. The layers of multiple description coding may include a first and a second layer of multiple description coding. The first layer of multiple description coding may include an ini...
05/22/2007
7219292Cyclic redundancy check modification for length detection of message with convolutional protection
In a method for a variable-length communications system including encoding a message and decoding a data bit stream, the message includes a plurality of message blocks. A message block of the message is encoded by generating a parity check bit stream, flipping the p...
05/15/2007
7200794Method and system for adaptive interleaving
A method a system for automatically controlling an adaptive interleaver involves monitoring performance parameters of a transmission system and controlling the adaptive interleaver in response to the performance parameters. The SNR and the data rate of the transmiss...
04/03/2007
7197689Trellis-based receiver
Receivers (1) for receiving encoded block signals and comprising processor systems (2) decode block signals by using Viterbi algorithms for finding a first candidate/path in a trellis (18) and by generating cost signals for finding further candi...
03/27/2007
7197052Technique for interfacing MAC and physical layers of access networks
According to specific embodiments of the present invention, a standardized interface is provided for enabling controlled communication between MAC and PHY devices of an access network. In one embodiment, a vendor independent interface is described which may be imple...
03/27/2007
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