Video deghosting using adaptive echo-detecting IIR filters

Author

D´Alto, V. ; Cremonesi, A. ; Casnati, A. ; Dassie, L. ; Poz, S. Dal

Author_Institution

SGS-Thomson Microelectron., Agrate Brianza, Italy

Volume

39

Issue

4

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

754

Lastpage

764

Abstract

This paper describes a novel adaptive channel equalizer (ACE), designed within the frame of the Europroject JESSI AE45B IQTV. According to an architectural indirect approach, the defined deghosting algorithm updates adaptively the system filter coefficients, to minimize the difference between the actual system output and the desired output signal. Thanks to an IIR filtering structure and to a novel deghosting algorithm, one is able to decrease effectively the filter coefficients, the system hardware complexity is reduced compared to the classic echo cancelling solutions. This feature makes ACE attractive for a single-chip VLSI implementation

Keywords

adaptive filters; colour television receivers; digital filters; echo suppression; equalisers; high definition television; television interference; video signals; Europroject; HDTV; JESSI AE45B IQTV; TV receivers; adaptive channel equalizer; adaptive echo detection; deghosting algorithm; filter coefficients; output signal; single-chip VLSI; system output; Cable TV; Degradation; Equalizers; HDTV; Hardware; IIR filters; Image quality; Power cables; Reflection; Signal generators;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.267395

Filename

267395