| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To shorten the processing time to retrieve the buffer amount not higher than a certain threshold in a frame unit at the time of buffering variable length frame data to notify a transmittable burst data amount in a frame unit. <P>SOLUTION: A buffer 3 for a frame number for storing the frame number is provided in the same address space as that of a frame buffer 1 for storing variable length frame data, and a frame division retrieving and controlling part 7 gives the value obtained by adding a threshold 31 existing in a read next first address 26 of the frame buffer 1 as a read address 32 to the buffer 3 for a frame number to acquire a frame number 33, retrieves a first address 23 to be a frame division from a memory 2 for buffer information with the frame number 33 as a read address 34, and outputs the buffer amount between the retrieved first address 23 and the next first address 26 as the buffer amount notification to a buffer amount notification request 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
