Apparatus, systems and methods for providing multiple video data

Details Apparatus, systems and methods for providing multiple video data Apparatus, systems and methods for providing multiple video data

1995-06-07

1996-07-23

Metjahic, Safet

Television

Bandwidth reduction system

Multiple channel

348715, 348 51, H04N 708

Patent

active

055394655

ABSTRACT:
A method is provided for generating a plurality of displays from a composite video data stream comprising a plurality of frames each including two portions, a first portion of each frame containing data defining even fields of respective first and second displays and a second one of the portions of each frame containing data defining odd fields of the first and second displays. During first and second phases of a set of processing phases, data defining the odd and even fields of the first display are extracted from each received frame. Also during the first and third phases, the extracted data defining the odd and even fields of the first display are written into a first object buffer. During second and fourth phases of the set of processing phases, data defining the odd and even fields of the second display are extracted from each received frame. Also during the second and fourth phases, the extracted data defining the odd and even fields of the second display is written into a second object buffer. During the third and fourth phases, the first display data stored in the first object buffer is retrieved to drive a display device for generating the first display. During the second and fourth phases, the second display data stored in the second object buffer is retrieved to drive a display device for generating the second display.

REFERENCES:
patent: 4027333 (1977-05-01), Kaiser et al.
patent: 4743965 (1988-05-01), Yamada et al.
patent: 4975771 (1990-12-01), Kussatly
patent: 5115304 (1992-05-01), Hang
patent: 5430474 (1995-07-01), Hines

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