Video communication method having refresh function of coding seq

Details Video communication method having refresh function of coding seq Video communication method having refresh function of coding seq

1994-02-10

1996-06-18

Metjahic, Safet

Television

Two-way video and voice communication

User positioning

349 19, 358405, 358434, H04N 100

Patent

active

055282849

ABSTRACT:
In a video communication system including a sending terminal and a receiving terminal connected via a packet switching network, a receiving terminal which has detected loss of a video packet sets a video output into a freeze status and transmits a refresh request command to the sending terminal. Upon receiving the refresh request command, the sending terminal requests a video coder unit to execute refreshing and transmits a series of video packets beginning from an INTRA frame. Upon receiving a packet of the INTRA frame, the receiving terminal releases the freeze status and restarts video information decoding.

REFERENCES:
patent: 4422171 (1983-10-01), Wortley
patent: 4829524 (1989-05-01), Yoshida
patent: 5057938 (1991-10-01), Edamura
patent: 5172246 (1992-12-01), Yoshida
patent: 5247347 (1993-09-01), Litteral et al.
patent: 5386234 (1995-01-01), Veltman et al.

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