Patent ID: 7664893

Claim:
A media drive control system, comprising: a plurality of playback management devices, each coupled to a corresponding playback device; and a user operation filter, comprising: a queue, receiving, storing and outputting a plurality of user operations UOPs as control instructions including at least a termination instruction as a predetermined condition, on a first-in-first-out basis; and a management device: 1) prioritizing the received termination instruction to be the first among the stored UOPs for outputting to the corresponding playback management device by emptying the queue as a predetermined condition is determined, 2) discarding at least one of the stored UOPs to free the queue capacity for storing the received UOP into the queue if the queue is full; and 3) receiving a ready signal from one of the playback management devices and thereby transmitting a stored UOP having the first priority to the corresponding playback management device if the queue is not empty; wherein the plurality of playback management devices receive the stored UOPs as control instructions from the management device of the user operation filter to accordingly control corresponding playback devices, and provide a next ready signal to inform the user operation filter to provide a next control instruction after completing the present control instructions.