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1. WO1985002508 - A METHOD TO COMPENSATE FOR THE TRUNCATION ERROR IN A SAMPLED SIGNAL AND A DEVICE FOR CARRYING OUT THE METHOD

Publication Number WO/1985/002508
Publication Date 06.06.1985
International Application No. PCT/SE1984/000367
International Filing Date 31.10.1984
IPC
G06F 7/48 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
7Methods or arrangements for processing data by operating upon the order or content of the data handled
38Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
48using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
H03H 17/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17Networks using digital techniques
02Frequency-selective networks
H03H 17/04 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17Networks using digital techniques
02Frequency-selective networks
04Recursive filters
CPC
G06F 7/48
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
7Methods or arrangements for processing data by operating upon the order or content of the data handled
38Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
48using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
G06F 7/49984
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
7Methods or arrangements for processing data by operating upon the order or content of the data handled
38Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
48using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
499Denomination or exception handling, e.g. rounding, overflow
49942Significance control
49947Rounding
49984Rounding away from zero
H03H 17/0219
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17Networks using digital techniques
02Frequency selective networks
0219Compensation of undesirable effects, e.g. quantisation noise, overflow
H03H 17/0461
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17Networks using digital techniques
02Frequency selective networks
04Recursive filters
0461Quantisation; Rounding; Truncation; Overflow oscillations or limit cycles eliminating measures
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON [SE]/[SE] (AllExceptUS)
  • DALQVIST, Ingemar, Erik [SE]/[SE] (UsOnly)
  • ERIKSSON, Gunnar, Anders [SE]/[SE] (UsOnly)
Inventors
  • DALQVIST, Ingemar, Erik
  • ERIKSSON, Gunnar, Anders
Agents
  • GAMSTORP, Bengt @
Priority Data
8306483-224.11.1983SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD TO COMPENSATE FOR THE TRUNCATION ERROR IN A SAMPLED SIGNAL AND A DEVICE FOR CARRYING OUT THE METHOD
(FR) PROCEDE DE COMPENSATION D'UNE ERREUR DE TRONQUAGE DANS UN SIGNAL ECHANTILLONNE ET DISPOSITIF POUR REALISER CE PROCEDE
Abstract
(EN)
A method for compensating the truncation error occurring in a sampled signal during processing in a digital filter. The mean error et is calculated for the filter, and before filtering the signal +et is added if the signal is positive and -et is added if the signal is negative. A device for carrying out the method is also described.
(FR)
Procédé de compensation d'une erreur de tronquage survenant dans un signal échantillonné pendant le traitement dans un filtre numérique. L'erreur moyenne et est calculée pour le filtre et, avant le filtrage du signal +et est ajouté si le signal est positif et -et est ajouté si le signal est négatif. Est également décrit un dispositif pour réaliser ce procédé.
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