| 摘要 |
PROBLEM TO BE SOLVED: To attain reduction of a recording memory of 0 coefficient and a circuit by decoding data necessary for a DCT operation and storing, enabling write-in and read-in, preparing a write-in and read-out address, controlling a counter for preparing the address, and temporarily storing a write-in counter value and controlling an output of the last data. SOLUTION: When a pair of a RUN and an AMP inputted from a variable length decoder 101 are except EOB, it is written in a memory 102 and a write-in counter value is increment by 1. Next, the next pair is discriminated and if it is other than EOB, it is written in the memory 102 and the write-in counter value is made incremental by 1; in this way, the same operation is repeated until the EOB is inputted. The write-in counter value is held in a counter value memory 1:106. From the value of this memory 1:106, it is discriminated from which part of the memory data are read out, at the time of reading. When the EOB is detected, the counter is held as it is. |
