| 摘要 |
<p>A data outputting sequence converting method and circuit is disclosed which employs an inverse discrete cosine transform (IDCT) for matching the sequences of a picture signal output from an IDCT unit and those output from a motion compensator in a moving picture coding apparatus. The circuit includes a memory (45) for storing the IDCT-performed data packed in a predetermined unit, a write controller (41) for generating a write address and a write control signal for controlling the operation of writing the IDCT-performed data in the memory (45) and generating a read request signal if the write operation is completed. The circuit also includes a read controller (43) for receiving an accept signal in response to the read request signal and generating a read address and a read control signal for reading the IDCT-performed data from the memory (45). Since the sequences of a picture signal output from an IDCT and those output from a motion compensator are united by an address mapping method, a separate format converter is not required, thus, post-processing complexity is relieved. Also, the circuit always operates without a processing delay due to the time gap between the request operation and accept operation. A simplified interfacing circuit is provided by mapping a luminance output signal and a chrominance output signal and compact hardware implementation can be achieved. <IMAGE></p> |
