Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1996-11-26
1999-02-16
Flynn, Nathan
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
348589, 348720, 348722, H04N 974
Patent
active
058725652
ABSTRACT:
A video processing system includes but structure, signal flow, and components to process and combine audio and video signals with improved power, cost-effectiveness, and flexibility. The system includes one or more input modules to convert input video signals to a predetermined format. A router routes converted video signals to selected ones of upstream processing cards, which perform video processing such as digital video effects, frame synchronization, non-linear editing, cascading, filtering, and the like. Signals from the upstream processing cards are directed to a switcher, which selectively mixes the upstream-processed signals. A switcher preview module may be provided to intermediately view signals provided by the switcher. The switcher is also attached to a series of downstream video processing cards, which may insert logos, add overlaying, and other suitable post-mixing functions. An output encoder converts signals from the downstream video processing cards into a desired output format, presenting these signals to I/O modules. The I/O modules may also provide input used by the downstream video processing cards. A coordinator manages interaction among the various foregoing modules. Another aspect of the invention involves a motherboard for the video processing system, including a main control bus, secondary control bus, video bus, composited signal video lines, and a number of slots for interconnecting video processing hardware components to the busses and lines.
REFERENCES:
patent: 5227863 (1993-07-01), Bilbrey et al.
patent: 5786814 (1998-07-01), Moran et al.
patent: 5793445 (1998-08-01), Lum et al.
Greaves Paul E.
Moore Michael Richard Young
Porter David E.
Weber John F.
Flynn Nathan
Play, Inc.
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