Video and audio data presentation interface

Details Video and audio data presentation interface Video and audio data presentation interface

1994-03-30

1997-03-25

Kriess, Kevin A.

395806, G06F 1324, G06F 1500

Patent

active

056154011

ABSTRACT:
Presentation of digital video and audio data in a computer system. Am application program may call upon a driver program to manipulate streams of video and audio data, including commands to present the video or audio to an operator, retrieve status information about the presentation, simultaneously present graphics with video data, halt or pause presentations, allocate or release resources for presentation, and group multiple streams for synchrony. The driver program may operate upon the grouped streams in synchrony in response to unified commands from the application program. An interface to the driver program may comprise a interrupt instruction invoked with a designated interrupt and a designated set of commands: initialization; open and close; play, pause, stop, seek, and step; group; set and get; installation; and termination. The driver program may be called upon using a standardized interface for such functions, in which the application program may indicate a designated set of parameters for each function call.

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