| 摘要 |
PURPOSE: A dynamic buffer control device is provided to minimize a buffer use and maximize a data process efficiency, by assigning a buffer to some groups according to a variable bit rate compensation characteristic. CONSTITUTION: A disk(10) stores a compressed continuous medium, and a disk driver(20) reads data from the disk(10). A disk scheduler(30) determines whether any stream of presently serviced streams is read out from the disk, and a free buffer pull(45) stores a continuous medium stream. A dynamic buffer controller(35) calculates a maximum buffer amount necessary for a window period using information from the scheduler and meta data and assigns a buffer space necessary every window period. The dynamic buffer controller(35) transfers the assignment result to the scheduler(30). An input buffer(41) stores being read out from the disk according to the control of the controller(35). An output buffer(42) stores data being transferred to a client(60) according to the control of the controller(35). A network part(50) transfers the data stored in the output buffer(42) to a network, and the client(60) displays data transferred via the network.
|
