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1. WO1983003727 - MODULATION AND CODING METHOD, WITH RANGE PREDICTION AND REDUCED BIT RATE ADAPTED TO A SIGNAL

Publication Number WO/1983/003727
Publication Date 27.10.1983
International Application No. PCT/EP1982/000091
International Filing Date 20.04.1982
IPC
H04B 14/06 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
14Transmission systems not characterised by the medium used for transmission
02characterised by the use of pulse modulation
06using differential modulation, e.g. delta modulation
H04N 19/124 2014.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
124Quantisation
H04N 19/50 2014.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
CPC
H04B 14/068
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
14Transmission systems not characterised by the medium used for transmission
02characterised by the use of pulse modulation
06using differential modulation, e.g. delta modulation
066using differential modulation with several bits [NDPCM]
068with adaptive feedback
H04N 19/124
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
124Quantisation
H04N 19/50
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
Applicants
  • KEHLER, Waldemar [DE]/[DE]
Inventors
  • KEHLER, Waldemar
Priority Data
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(EN) MODULATION AND CODING METHOD, WITH RANGE PREDICTION AND REDUCED BIT RATE ADAPTED TO A SIGNAL
(FR) PROCEDE DE MODULATION ET CODAGE, A PREDICTION DE PLAGE, AVEC TAUX DE BITS REDUIT ADAPTE AU SIGNAL
Abstract
(EN) Modulation and coding method with reduced bit rate adapted to the signal wherein, as expected function for the centering of a signal expected set, it is possible to define an expected range so that it ideally considers and includes all diverting expected parameters which may be isolated from a signal. Almost in all instances, such an expected range will be narrower than the usual quantification ranges of the conventional DPCM. With a similar graduation, it is often possible to recognize a considerable redundancy which may be exploited. The coding method is particularly convenient to all substantial periodical signal sets (accessible to predictive processes), particularly to the coding of images (image period) and to the speech coding. Application is particularly appropriate where variable lengths of coding words are admitted.
(FR) Procédé de modulation et codage avec taux de bits réduit adapté au signal, dans lequel comme fonction d'attente pour le centrage d'un ensemble escompté du signal, il est possible de définir un domaine d'attente tel qu'il fait intervenir de manière idéale tous les paramètres escomptés divergeants, pouvant être isolés d'un signal. Dans presque tous les cas, un tel domaine d'attente sera plus étroit que les domaines de quantification usuels de la MDIC conventionnelle. Avec une même graduation il est souvent possible de reconnaître une redondance considérable pouvant être exploitée. Le procédé de codage convient à tous les ensembles de signaux quasi-périodiques (accessibles à des procédés prédictifs), en particulier au codage d'images (période d'image) et au codage de la parole. L'emploi est particulièrement indiqué où des longueurs variables de mots de codage sont admises.
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