Method and apparatus for compositing compressed video data

Details Method and apparatus for compositing compressed video data Method and apparatus for compositing compressed video data

1993-03-11

1995-04-18

Chin, Tommy P.

Television

Image signal processing circuitry specific to television

Motion dependent key signal generation or scene change...

348699, 348407, 348584, H04N 7133, H04N 7137

Patent

active

054082749

ABSTRACT:
Inverse motion compensating devices are used to transform motion compensated transform domain video signals to corresponding transform domain video signals. A compositing mechanism receives the transform domain video signals from the inverse motion compensating devices and performs transform domain video compositing operations directly on the transform domain video signals. The compositing operations result in a single composited signal incorporating each of the transform domain video signals. The single composited signal may be encoded for motion compensation to generate a single motion compensated transform domain video signal suitable for transmission. After transmission, inverse transform domain operations and inverse motion compensation operations may be performed to reconstruct the composited signal. The composited signal may then be projected on a video display device.

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MPEG--Standard Draft, MPEG Video Committee Draft, MPEG 901/176 Rev. 2, Dec. 1990.
IPEG Standard Draft, IPEG-9-R7 (Feb. 1991).

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