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6917312 |
Technique for improving the quality of digital signals in a multi-level signaling system
A technique for improving the quality of digital signals in a multi-level signaling system is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for...
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6914545 |
Circuitry and methods for reducing run-length of encoded data
An encoder for enabling selection of output bits that reduce run-length includes classification circuitry, a disparity control circuit, encoding circuitry, and a run-length control circuit. The...
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6911920 |
Hierarchical encoding and decoding devices
On the transmitter side, an enhancement layer is hierarchized by expanding a coefficient of orthogonal transformation to a plurality of bit planes or designating a coefficient position in a block....
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6903667 |
Data conversion apparatus and data conversion method
A data conversion apparatus of this invention has a storage unit configured to store a conversion table to convert m-bit data into n-bit data, and a conversion unit configured to convert the m-bit...
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6898166 |
Synchronous signal generating method, recording apparatus, transmitting apparatus, recording medium, and transmission medium
There is disclosed a synchronous signal generating method, recording apparatus, transmitting apparatus, recording medium and transmission medium in which a plurality of coding tables is used to...
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6897799 |
Current parking return to zero digital-to-analog converter
A digital-to-analog converter having a differential signal path, and a current parking circuit that is independent of the signal path, thereby avoiding a source of imbalance that caused output...
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6897793 |
Method and apparatus for run length limited TMDS-like encoding of data
A serial data transmission system in which a transmitter encodes data in accordance with a TMDS-like encoding algorithm and transmits the TMDS-like encoded data over a serial link to a receiver....
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6897792 |
Reducing number of consecutive ones in data-dependent scrambler
A data dependent scrambler (DDS) for a communications channel that transmits a user data sequence having a plurality of symbols includes a scrambler that generates a scrambled user data sequence...
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6888480 |
Run-length violation detection circuitry and methods for using the same
Circuitry for detecting excessive runs of similar bits of data in a data stream is provided. The data stream is typically received as serial data operating in a serial clock domain. Run-length...
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6876315 |
DC-balanced 6B/8B transmission code with local parity
A transmission code which packs six bits of data and four control vectors into an eight-hit format is presented. A direct current (DC)-balanced 6B/8B transmission code is produced from an input...
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RE38719 |
Adjust bit determining circuit
A recording medium for a computer contains sectors, each of which represents a section of data that has originally been supplied by a user. As the user data is sent to the recording medium from the...
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6867713 |
DC free code design with state dependent mapping
A method of encoding digital information in a system is provided. The method includes receiving a sequence of user-bits and calculating a running digital sum (RDS) of the system. Also, a code word...
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6861965 |
Code modulating method and code modulating apparatus, demodulating method and demodulating apparatus, and information recording medium
In a code modulating method and a code modulating apparatus, a run length has an encoding rate of ⅔ which is equal to that of (1, 7) modulation, and indicates the number of “0” bits between...
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6839004 |
High rate run length limited code
Methods of encoding and decoding, as well as an encoding system and a digital communications system are provided for encoding data words into code words and decoding code words into data words. The...
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6836226 |
Ultra-wideband pulse modulation system and method
An ultra-wideband pulse modulation apparatus, system and method is provided. The pulse modulation method increases the available bandwidth in an ultra-wideband, or impulse radio communications...
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6819802 |
HVAC system display
A set of processes are disclosed for compressing and decompressing bitmapped picture files that are to be stored for later display within a control for an HVAC system. The compression process...
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6812867 |
Data coding for data storage systems
Described is a modulation encoder having a finite state machine for converting input bits into output bits in which the number of alternating output bits is limited to j+1 where j is a predefined...
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6812868 |
Run length limited code generation method, run length limited code recording/reproducing apparatus, and run length limited code recording/reproduction method
A run length limited code recording/reproduction apparatus according to an aspect of this invention includes a generation unit for generating a plurality of different code sequences which have...
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6809662 |
Modulation code system and methods of encoding and decoding a signal by multiple integration
The invention relates to a modulation code system, including an encoder and a decoder and two corresponding modulation code methods. More specifically, the encoder 100 serves for transforming an...
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6809663 |
Digital signal modulation method
A digital signal modulation method selects a modulation strategy to modulate current M sets of data by determining variations in a digital sum value (DSV) corresponding to the modulated data...
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6807137 |
Encoding method and apparatus therefor, and optical-disk recording method and apparatus therefor
For encoding a current data word to be encoded, a most suitable redundant signal for the current data word to be encoded is generated by referring to a next data word to be encoded, that is, using...
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6801668 |
Method of compressing data by use of self-prefixed universal variable length code
Disclosed is a method of compressing data contained in variable length or universal variable length code words to be carried in a digital bitstream. The method includes formatting a first set of...
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6798363 |
Method for compensating an offset in an asymmetric reproduction signal
The present invention relates to a method for compensating asymmetry in a reproduction signal DRSO from an optical recording medium, and to an apparatus for reading from and/or writing to optical...
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6794998 |
Data modulating/demodulating method and system and apparatus using the same
Data modulating/demodulating method and system and apparatus using the same. The modulation method with smaller modulation table, compared to the conventional modulation table, is used to modulate...
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6778105 |
Method of modulating series of data words into constrained sequence
A method and apparatus of converting a series of data words into modulated signals generates for each data word, a number of intermediate sequences by combining mutually different digital words...
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6778104 |
Method and apparatus for performing DSV protection in an EFM/EFM&plus encoding same
An EFM/EFM+ encoding system is adapted to modulate a source symbol sequence into a modulated bit sequence that is further converted to a channel bit sequence, which is to be recorded on a recording...
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6775300 |
Clock distribution in a communications network
Clock information related to a reference clock is distributed from a master network node to a slave network node in an asynchronous packet-based network by embedding the clock information into an...
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6768429 |
Multiplexing an additional bit stream with a primary bit stream with conversion between qB/rB and xB/yB encoded bit streams
Managing a primary bit stream involves converting a qB/rB encoded bit stream to an xB/yB encoded bit stream and multiplexing an additional bit stream with the xB/yB encoded bit stream at a...
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6768432 |
Method of converting a series of m-bit information words into a modulated signal
This invention relates to a digital modulation method and apparatus used for recording an audio or video signal, computer data, and etc on a recording medium such as an optical or magneto-optical...
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6765511 |
Method and apparatus for encoding digital data
An input bit stream is encoded into a stream of output code words according to variable-length encoding rules using a variable constraint length. The output-code-word stream observes prescribed run...
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6753797 |
Multiproperty 16/17 trellis code
A coding system that in a first embodiment is capable of encoding 16-bit input words into even parity 17-bit codewords, wherein the codewords have at least 7 ones, wherein the codewords has an...
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6751774 |
Rate (M/N) code encoder, detector, and decoder for control data
A system for block encoding and block decoding of servo data with a rate (M/N) code, where M is an integer greater than 1 and N is an integer that is greater than M. Two codes are described for the...
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6737993 |
Method and apparatus for run-length encoding data values
A method for run-length encoding two or more data values, the method comprising: loading the data values into storage by forming a first data string, the data string comprising a plurality of data...
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6737996 |
Information recording and reproducing method
Disclosed is a method for satisfying both high reliability and low error rate when in recording and reproducing information by making the average run length of the RLL code for recording a crystal...
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6737998 |
Method and device for correcting signal
A method for correcting an analog signal to target levels is provided. Firstly, the analog signal is periodically sampled to obtain a plurality of sampled points. Then, levels of the sampled points...
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6731699 |
Detector, reproduction system, receiver and method
A detector ( 30 ) is described for detecting a digital signal (B i o ) out of an input information signal (A i ) which represents a runlength limited sequence, the runlength having a minimal value...
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6710724 |
Device for encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa
A device is provided for encoding a stream of data bits of a binary source signal (S) into a stream of data bits of a binary channel signal (C 1 ), wherein the bit stream of the source signal is...
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6703949 |
Method and apparatus for facilitating balanced bundles of electrical signals
One embodiment of the present invention provides a system that transmits a stream of datawords through a bundle of conductors with a three-dimensional structure. Upon receiving a dataword to be...
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6700510 |
Scalable physical coding sublayer (PCS) and 8B/10B encoder
A scalable physical coding sublayer (PCS) can be adjusted to provide different combinations of communication channels and data widths. The PCS can use 8 B/ 10 B encoders having a disparity input...
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6700509 |
Device and method for processing a digital information signal
A device and associated method for processing a digital information signal from a channel signal. The digital information signal is runlength limited with one or more constraints. The device...
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6696991 |
Coding and decoding method of suppressing DC component in codestream
A code modulation and demodulation method includes removing a DC component of a code stream to be modulated when source data is recorded on an optical information storage medium and controlling a...
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6693568 |
Apparatus, and an associated method, for detecting digital data using MLSE detection with a dynamically-sized trellis
Apparatus, and an associated method, for facilitating recovery of digital data communicated to a receiving station upon a non-ideal channel. Sequences of the data are applied to a reliability...
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6691275 |
Encoder with vector-calculated disparity logic
A novel method and apparatus for encoding input data at a faster rate provides error detection, clock recovery, and reduction of spectral components near DC, and is capable of encoding data while...
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6690305 |
Method of data transmission over a bus system
A method of data transmission from a data source to a data sink via a bus system. Run length encoding of the data to be transmitted is performed, where data units 1; 1 ′ having two data elements...
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6686855 |
Computer program for encoding digital data
Encoding tables are accorded with variable-length encoding rules using a variable constraint length. A DSV control bit is periodically inserted into a first input bit stream to generate a second...
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6683547 |
Method and system for data compession with dictionary pre-load of a set of expected character strings
A method, apparatus and computer program product for encoding data transmitted over a communications channel, including pre-loading an encoder dictionary with a set of character strings expected to...
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6674375 |
Run length limited coding with minimal error propagation
Systems and methods that encode and decode data in a manner that limits error propagation by parsing a data word of length n into a predetermined number of data blocks, individually encoding each...
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6664904 |
Method and device for recovering RLL constrained data to be decoded
A method for recovering a data required to have n consecutive and repetitive bits is disclosed. The data is obtained by converting a sample value sequence into a binary sequence according to a...
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6657967 |
Dummy bit elimination device and coding apparatus for FEC code word
A dummy bit elimination device in a coding apparatus for use in a submarine cable system. The dummy bit elimination device has a converter for eliminating only dummy bits from FEC (Forward Error...
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6657561 |
Data decompression system and method
A method and system for decompressing image data in a digital scanning system such as a printer. A plurality of streams of digital data are received in a compressed format. The compressed format...
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