Patent ID: 6370323
Filing Date: 2002-04-09
Classification: H04N

Abstract:
An audio and video decoder for decoding audio and video streams, the audio and video decoder responsive to commands received from a host to control audio and video decoding processes, the audio and video decoder comprising:a host interface; and a command processor including a command and status buffer for storing selected ones of the commands received from the host through the host interface, the command processor operable to: allocate space in the command and status buffer to store a command status word representative of an execution status of each command stored therein, return a command status pointer to the host representing a location in a memory for the command status word for each command before accepting a new command from the host, monitor the execution status for each command and update the command status word for each command based on the execution status, and execute each command from the command and status buffer according to an order in which each command is received.