| 摘要 |
PURPOSE:To reduce data quantity in a single write-in to a buffer memory and the number of times of writ-in and to improve the utilization efficiency of the buffer memory. CONSTITUTION:This controller for a buffer memory suitable for a television telephone device and a video codeck used for a conference system consists of a variable length encoder part 2, switching circuits 3 and 4, a presence judgement circuit 6, a variable length code generation circuit 7, an escape sequence data generation circuit 8 and a stuffing code generation circuit 29. Codes with different effective data length can be incorporated in a single block designated with a prescribed bit length without extending into several data blocks, and the data width of the data block can be reduced to a minimum necessary size. |
