Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8122318 | Decoding apparatus and method for a perfect difference-set cyclic code and a difference-set cyclic code A decoding apparatus includes a decoder register for receiving data having a codeword including null data bits, and decoding the received data while shifting Bit Under Decoding (BUD) by one bit. A connection unit outputs a check result by applying a predetermined ch... | 02/21/2012 |
| 8086935 | Soft error correction for a data storage mechanism An apparatus and method are disclosed for correcting errors in data obtained from read operations on a storage medium. Errors that occur in a minority of read operations for the data are corrected by a voting technique. The data may then be processed with error corr... | 12/27/2011 |
| 7904788 | Methods of varying read threshold voltage in nonvolatile memory Data is read from a nonvolatile memory array using one or more read voltages that are adjusted during memory life. Programming target voltages and read voltages may be adjusted together over memory life to map memory states to an increasingly wide threshold window. ... | 03/08/2011 |
| 7849380 | Interleaver mode detection in a digital video receiver A method and apparatus for decoding received digital data representing video, audio, information or a combination thereof. After a forward error correction (FEC) frame sync lock is detected, a counter is incremented corresponding to the number of identical control w... | 12/07/2010 |
| 7730381 | Erasure detection and power control for a transport channel with unknown format in a wireless communication system Erasure detection and power control are performed for an intermittently active transport channel with unknown format. A receiver processes each received block and determines whether it passes or fails CRC. For each received block with CRC failure, the receiver perfo... | 06/01/2010 |
| 7634706 | Majority-detected erasure enhanced error correction A system for enhancing the error correction capability of an error correction code (“ECC”) during error recovery operations accumulates, for respective bits, counts of the number of times the bits are detected as 1s in multiple re-reads of a data signal. The sys... | 12/15/2009 |
| 7613981 | System and method for reducing power consumption in a low-density parity-check (LDPC) decoder A system and method for reducing power consumption in a Low Density Parity-Check Code (LDPC) decoder includes a sleep mode checking module and a gating circuit. The sleep mode checking module checks whether a check node is in sleep mode. The check node is considered... | 11/03/2009 |
| 7539922 | Bit failure detection circuits for testing integrated circuit memories A bit failure detection circuit supports reliability testing of a memory device by accumulating a sum of data errors in data read from the memory device. The detection circuit compares a plurality of bytes of data read from the memory device against a plurality of b... | 05/26/2009 |
| 7536626 | Power control using erasure techniques Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, c... | 05/19/2009 |
| 7530004 | Error correction apparatus using forward and reverse threshold functions An error detection and correction apparatus includes three threshold logic units which make decisions based on current and previous bit values in a bit stream of block-coded data. One of the threshold logic units decodes the data stream based on an advancing time st... | 05/05/2009 |
| 7461326 | Information processing method capable of detecting redundant circuits and displaying redundant circuits in the circuit design process The information processing method of the present invention detects redundant circuits as described below by means of an information processor that is provided with: a storage unit for storing circuit operation information that uses hardware description language and ... | 12/02/2008 |
| 7428688 | Method of detecting two-dimensional codes A method of detecting two-dimensional codes using a plurality of light and dark data bits arranged two-dimensionally. The method includes detecting the code as a gray scale value image, splitting the detected gray scale value image into image areas corresponding to ... | 09/23/2008 |
| 7406653 | Anomaly detection based on directional data Properly detects an anomaly on the basis of directional data that are obtained in sequence from a monitored object. An anomaly detecting method includes: sequentially generating directional data indicating a feature of each piece of monitored data correspondingly to... | 07/29/2008 |
| 7373581 | Device, program, and method for decoding LDPC codes A parallel decoder, which is simpler and more flexible than conventional devices, is provided in decoding device for a LDPC code. The present invention includes a plurality of memory units for storing a received value and a message generated during a Message-Passing... | 05/13/2008 |
| 7363553 | System and method for adjusting soft decision thresholds in a soft-decision error correction system The soft decision thresholds in a soft decision forward error correction (FEC) system may be adjusted based on mutual information of a detected signal. In one embodiment, a recursive algorithm may be used to optimize threshold values by maximizing the mutual informa... | 04/22/2008 |
| 7353170 | Noise-adaptive decoding In one aspect the invention is a method for decoding. The method includes receiving encoded data and decoding the encoded data using a noise-adaptive decoder. The data may include first-order Reed-Mueller (FORM) based codes. The data may be based on Complementary Co... | 04/01/2008 |
| 7320095 | Optimization of the decision threshold for binary signals A threshold value is set in a decision circuit receiving a transmitted stream of binary symbols from a network link. The decision circuit uses the threshold value for detecting whether a 1 or a 0 is received to produce an output stream having a low bit error rate. B... | 01/15/2008 |
| 7318186 | Decoding method, decoding apparatus, and program to decode low density parity check codes The present invention relates to a decoding method and a decoding apparatus in which, while the circuit scale is suppressed, the operating frequency can be suppressed within a sufficiently feasible range, and control of memory access can be performed easily, and to ... | 01/08/2008 |
| 7313748 | FEC decoder and method A method is described for FEC decoding a signal which has become affected by transmission errors, the original signal being transmitted together with parity data. The method comprises: receiving (5) the original signal (DATA) and parity data (ECC DATA) with e... | 12/25/2007 |
| 7292655 | Apparatus and method and decoding biphase signals A technique of decoding a biphase signal comprises sampling the biphase signal to obtain phase sample values and sampling the biphase signal to obtain magnitude sample values. A first digital signal is derived from the phase sample values and associated bit combinat... | 11/06/2007 |
| 7272771 | Noise and quality detector for use with turbo coded signals In one aspect this invention provides a method to operate a decoder, and a decoder that operates in accordance with the method. The method includes monitoring, during operation of the decoder on a signal received from a channel, the value of at least one extrinsic v... | 09/18/2007 |
| 7257760 | Early decoding of a control channel in a wireless communication system Techniques are provided for performing early decoding of a message on a control channel in a wireless (e.g., GSM) communication system. In a GSM system, a message for a paging channel is transmitted in four bursts. For early decoding in GSM, a terminal initially rec... | 08/14/2007 |
| 7246303 | Error detection and recovery of data in striped channels In general, in one aspect, the disclosure describes an apparatus that includes a transmission module to split a data segment into a plurality of data stripes and transmit each data stripe over an associated data channel. The plurality of data channels are organized ... | 07/17/2007 |
| 7236005 | Majority voter circuit design A method and apparatus for performing majority voting is presented. The method selects pairs of inputs, performs AND and NOR operations on each pair of inputs to determine that each pair of inputs is both high or both low, yielding a quantity of “both high” pair... | 06/26/2007 |
| 7162241 | Method for managing multicast group in mobile communication system A multicast service of a 3GPP Universal Mobile Telecommunications System (UMTS) is disclosed. By allowing an RNC to manage multicast group member information by multicast services on multicast areas, when a user terminal being currently provided with an MBMS service... | 01/09/2007 |
| 7146553 | Error correction improvement for concatenated codes An enhanced forward error correction system is disclosed. Transmitted data is encoded into codewords in multiple dimensions. The decoding of received data by a decoder is performed in multiple passes in each dimension, with corrected data provided as an output from ... | 12/05/2006 |
| 7134066 | Generalized parity stripe data storage array The Hamming distance of an array of storage devices is increased by generating a parity check matrix based on column equations that are formed using an orthogonal parity code and includes a higher-order multiplier that changes each column. The higher order multiplie... | 11/07/2006 |
| 7130934 | Methods and apparatus for providing data transfer control A variety of advantageous mechanisms for improved data transfer control within a data processing system are described. A DMA controller is described which is implemented as a multiprocessing transfer engine supporting multiple transfer controllers which may work ind... | 10/31/2006 |
| 7103825 | Decoding error-correcting codes based on finite geometries A method decodes a received word for a binary linear block code based on a finite geometry. First, a parity check matrix representation of the code is defined. The received word is stored in a channel register. An active register represents a current state of the de... | 09/05/2006 |
| 7095807 | Method for decoding biphase signals A technique of decoding erroneous biphase signals is disclosed comprising the following steps. First, phase and magnitude sample values (ps, bs) are formed, from which a first digital signal (d1) is derived. From this, associated bit combinations (St1,... | 08/22/2006 |
| 7069494 | Application of special ECC matrix for solving stuck bit faults in an ECC protected mechanism A method of correcting an error in an ECC protected mechanism of a computer system, such as a cache or system bus, by applying data with a number of bits N to an error correction code (ECC) matrix to yield an error detection syndrome, wherein the ECC matrix has a pl... | 06/27/2006 |
| 7051268 | Method and apparatus for reducing power consumption of a decoder in a communication system A method and an apparatus for reducing power consumption of a decoder in a communication system are disclosed. In a communication system communicating a packet, the packet can be arranged among slots of a communication channel so that each slot following the first s... | 05/23/2006 |
| 6982659 | Method and apparatus for iterative decoding Method and apparatus for determining the stopping point of an iterative decoding process. In one embodiment the estimated values of an iteration of an iterative decoder are provided to a signature circuit. If the signature does not differ from the previous signature... | 01/03/2006 |
| 6941506 | Switching circuit for decoder A switching circuit, for use in soft-decision Extended Hamming Code decoding, allows the detection of pairs of received bits having “low confidence” and whose position-ids SUM to the syndrome of the received code signal, when the occurrence of an even (and non-z... | 09/06/2005 |
| 6910173 | Word voter for redundant systems The present invention provides a word voter for redundant systems with n modules wherein each of these n modules generates a word output. The word voter receives word outputs from each of the n modules. A voter decision is generated by the word voter utilizing a wor... | 06/21/2005 |
| 6686853 | Method and apparatus for iterative decoding Method and apparatus for determining the stopping point of an iterative decoding process. In one embodiment the estimated values of an iteration of an iterative decoder are provided to a signature circuit. If the signature does not differ from the previou... | 02/03/2004 |
| 6633615 | Trellis transition-probability calculation with threshold normalization A circuit performs threshold normalization of accumulated transition probabilities for a given state of a state transition trellis in a maximum likelihood detector. Threshold normalization may be accomplished by comparison and setting of a single bit in s... | 10/14/2003 |
| 6167552 | Apparatus for convolutional self-doubly orthogonal encoding and decoding An encoder and decoder for generating and decoding convolutional codes of improved orthogonality. In an exemplary embodiment the encoder includes a K-bit length shift register for receiving an input serial stream of information bits and providing for each... | 12/26/2000 |
| 6122767 | Method and apparatus for noise reduction of cyclic signal by selecting majority logic state of corresponding portions of plural cycles An EDTV application utilizing a Synchronous Vector Processor (SVP) includes the operation whereby noise is reduced in the operation to demodulate the chroma signal. Initially, the NTSC composite video is separated into the luminance (Y) and the chroma (C)... | 09/19/2000 |
| 6119937 | Information reproduction system, information recording system and information recording medium utilizing an optically readable DOT code A threshold determination/binarization circuit and a recording medium for an information reproduction system, wherein the diameter of a reference dot detected by a reference dot diameter detection section is compared with a predetermined dot diameter as a... | 09/19/2000 |
