Rendering an audio-visual stream synchronized by a software cloc

Details Rendering an audio-visual stream synchronized by a software cloc Rendering an audio-visual stream synchronized by a software cloc

1996-12-09

1999-03-30

Heckler, Thomas M.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395551, 395556, G06F 1700, G06F 112

Patent

active

058895159

ABSTRACT:
A DVD CD-ROM player integrated with a personal computer is provided. When integrating a DVD CD-ROM with a personal computer, there are various problems that must be overcome. For example, the stream from the DVD CD-ROM utilizes a 27 MHz clock. However, a personal computer typically does not have a 27 MHz clock, but instead has a system clock, that runs at the frequency of the processor. Therefore, in order to play a DVD-based audio-visual work in a personal computer, a clock running at 27 MHz is needed. As such, a software clock running at 27 MHz is provided which facilitates the integration of a DVD CD-ROM into a personal computer. By using a software clock, synchronization of the audio-visual stream is facilitated and both cost and development time are reduced.

REFERENCES:
patent: 4575848 (1986-03-01), Moore et al.
patent: 5553222 (1996-09-01), Milne et al.
patent: 5596696 (1997-01-01), Tindell et al.
Jack, Keith, Video Demystified: A Handbook for the Digital Engineer, 2d ed., Hightext Publications, San Diego, 1996, Chaps. 10 and 11, pp. 426-600 .

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