Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information or similar information or a subset of information is represented by a different sequence or number of digits

HELECTRICITY H03Electronic circuits H03MCODING DECODING CODE CONVERSION IN GENERAL

H03M7/00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information or similar information or a subset of information is represented by a different sequence or number of digits

H03M7/001characterised by the elements used H03M7/002using thin film devices H03M7/003using superconductive devices H03M7/004using magnetic elements H03M7/005using semiconductor devices H03M7/006using diodes H03M7/007using resistive or capacitive elements H03M7/008using opto-electronic devices H03M7/02Conversion to or from weighted codes H03M7/04the radix thereof being two H03M7/06the radix thereof being a positive integer different from two H03M7/08the radix being ten H03M7/10the radix thereof being negative H03M7/12having two radices H03M7/14Conversion to or from non-weighted codes H03M7/16Conversion to or from unit-distance codes H03M7/165Conversion to or from thermometric code H03M7/18Conversion to or from residue codes H03M7/20Conversion to or from n-out-of-m codes H03M7/22to or from one-out-of-m codes H03M7/24Conversion to or from floating-point codes H03M7/26Conversion to or from stochastic codes H03M7/28Programmable structures H03M7/30Compression Expansion Suppression of unnecessary data H03M7/3002Conversion to or from differential modulation H03M7/3004Digital delta-sigma modulation H03M7/3006Compensating for, or preventing of, undesired influence of physical parameters H03M7/3008by averaging out the errors H03M7/3011of non-linear distortion H03M7/3013Non-linear modulators H03M7/3015Structural details of digital delta-sigma modulators H03M7/3017Arrangements specific to bandpass modulators H03M7/302characterised by the number of quantisers and their type and resolution H03M7/3022having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it H03M7/3024having one quantiser only H03M7/3026the quantiser being a multiple bit one H03M7/3028the quantiser being a single bit one H03M7/3031characterised by the order of the loop filter H03M7/3033the modulator having a higher order loop filter in the feedforward path H03M7/3035with provisions for rendering the modulator inherently stable H03M7/3037with weighted feedforward summation H03M7/304with distributed feedback H03M7/3042the modulator being of the error feedback type H03M7/3044Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit H03M7/3046adaptive H03M7/3048Conversion to or from one-bit differential modulation only H03M7/3051adaptive H03M7/3053Block-compounding PCM systems H03M7/3055Conversion to or from Modulo-PCM H03M7/3057Distributed Source coding H03M7/3059Digital compression and data reduction techniques where the original information is represented by a subset or similar information H03M7/3062Compressive sampling or sensing H03M7/3064Segmenting H03M7/3066by means of a mask or a bit-map H03M7/3068Precoding preceding compression H03M7/3071Prediction H03M7/3073Time H03M7/3075Space H03M7/3077Sorting H03M7/3079Context modeling H03M7/3082Vector coding H03M7/3084using adaptive string matching H03M7/3086employing a sliding window H03M7/3088employing the use of a dictionary H03M7/3091Data deduplication H03M7/3093using fixed length segments H03M7/3095using variable length segments H03M7/3097Grammar codes H03M7/40Conversion to or from variable length codes H03M7/4006Conversion to or from arithmetic code H03M7/4012Binary arithmetic codes H03M7/4018Context adapative binary arithmetic codes [CABAC] H03M7/4025constant length to or from Morse code conversion H03M7/4031Fixed length to variable length coding H03M7/4037Prefix coding H03M7/4043Adaptive prefix coding H03M7/405Tree adaptation H03M7/4056Coding table selection H03M7/4062Coding table adaptation H03M7/4068Parameterized codes H03M7/4075Golomb codes H03M7/4081Static prefix coding H03M7/4087Encoding of a tuple of symbols H03M7/4093Variable length to variable length coding H03M7/42using table look-up for the coding or decoding process H03M7/425for the decoding process only H03M7/46Conversion to or from run-length codes H03M7/48alternating with other codes during the code conversion process H03M7/50Conversion to or from non-linear codes H03M7/55Compression Theory H03M7/60General implementation details not specific to a particular type of compression H03M7/6005Decoder aspects H03M7/6011Encoder aspects H03M7/6017Methods or arrangements to increase the throughput H03M7/6023Parallelization H03M7/6029Pipelining H03M7/6035Handling of unkown probabilities H03M7/6041Compression optimized for errors H03M7/6047Power optimization with respect to the encoder, decoder, storage or transmission H03M7/6052Synchronisation of encoder and decoder H03M7/6058Saving memory space in the encoder or decoder H03M7/6064Selection of Compressor H03M7/607Selection between different types of compressors H03M7/6076Selection between compressors of the same type H03M7/6082Selection strategies H03M7/6088according to the data type H03M7/6094according to reasons other than compression rate and data type H03M7/70Type of the data to be coded, other than image and sound H03M7/702Software H03M7/705Unicode H03M7/707Structured documents, XML