Television system in which digitized picture signals subjected t

Details Television system in which digitized picture signals subjected t Television system in which digitized picture signals subjected t

1988-02-24

1989-07-18

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358135, 358136, 375 27, H06N 7133, H06N 7137

Patent

active

048498122

ABSTRACT:
Television system in which digitalized picture signals subjected to a transform coding are transmitted from an encoding station to a decoding station. In a television system a digital picture signal is subjected to a transform coding for the purpose of bit rate reduction. In order to detect motion effects between the two fields of a picture, these fields are also examined in a motion detector 8310. If no motion is detected, intraframe transform is employed and if motion is detected intrafield transform is employed. Small motion effects can be eliminated by subjecting the picture signal to a median filtering before subjecting it to an intraframe transform.

REFERENCES:
patent: 4398217 (1983-08-01), Peters
patent: 4571618 (1986-02-01), Hatori
patent: 4591909 (1986-05-01), Kuroda
patent: 4698672 (1987-10-01), Chen
patent: 4704628 (1987-11-01), Chen
patent: 4710813 (1987-12-01), Wallis
patent: 4722002 (1988-01-01), Mochizuki
patent: 4723161 (1988-02-01), Koga
patent: 4727421 (1988-02-01), Koga

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