| 摘要 |
A statistical multiplexer (300) selectively passes packets of encoded data from a plurality of encoders (302) to a communication channel (330) so as to maximize the quality of the encoded data. A table is stored in a memory (313) of the statistical multiplexer (300) that has an entry for each unit of encoded data that can be transmitted over the communication channel (330) in a predetermined time interval. The statistical multiplexer (300) accesses each entry in the table to obtain a pointer, e.g., an address, to an encoder (302) that can transmit the next unit of encoded data to the communication channel (330). The statistical multiplexer (300) dynamically adjusts the data compression rate for each variable rate application so that the quality of all the encoded data streams are optimized over a window, and builds a new table that reflects the adjusted rates. In one application, the table is broken into a static table and a dynamic table. |
