| 摘要 |
PURPOSE: A method for controlling macro adder MPEG video decoder is provided to minimize an operational latency of a macro block adder by implementing an adding through a checking of a waiting state of a memory side buffer and a waiting state of respective operand, and by implementing a calculation for the other macro block through an outputting an operand request signal. CONSTITUTION: A process performs an adding by inputting a difference pixel value and a compensated pixel value to an operand from a macro block adder according to an operand ready signal(operand_ready) and an operand request signal(operand_request). The process determines whether the memory side buffer is a waiting state or not, if the buffer is the waiting state, outputs an adding decoded pixel to the buffer; and, otherwise, it dose not output the added pixel decoded. If a time passes among the outputting of the added pixel decoded to the buffer, the process feedbacks to the adding process. |
