Computer graphics processing and selective visual display system – Computer graphic processing system – Plural graphics processors
Patent
1995-10-24
1998-06-30
Kim, Matthew M.
Computer graphics processing and selective visual display system
Computer graphic processing system
Plural graphics processors
345509, 36440001, 704270, G06F 1516
Patent
active
057741310
ABSTRACT:
An improved sound generation and display control apparatus for a personal digital assistant capable of improving the system thereof and a transmission performance for various kinds of display apparatuses and capable of editing an externally supplied video source and providing an overlay function, which includes a central processing unit for controlling the entire system so as to display stored data and to generate sound; a graphic and sound co-processor for processing graphic and sound data in accordance with a control of the central processing unit; a memory for storing the graphic and sound data processed by the graphic and sound co-processor and for storing system data; a direct memory access (DMA) controller for accessing the data stored in the memory in accordance with a DMA request; a bus arbitrator and memory controller for arbitrating an allocation of a system bus and for controlling an access to the memory and a refreshment of the memory; a sound generator for receiving the sound data outputted from the memory through the DMA controller and for generating a sound corresponding to the sound data applied thereto; and a display timing controller for receiving the display data outputted from the memory through the DMA controller and for processing the display data so as to display the data on a display member, thus providing a video overlay function and the capability of editing an externally applied video data, providing a single memory system, and enhancing the system operation performance.
REFERENCES:
patent: 5432900 (1995-07-01), Rhodes et al.
patent: 5491498 (1996-02-01), Koyama et al.
patent: 5537608 (1996-07-01), Beatty et al.
patent: 5553220 (1996-09-01), Keene
Chauhan U.
Kim Matthew M.
LG Electronics Inc.
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