Abstract: An apparatus for testing video ordered type terminals by using a computer, and a testing method therefor, employ a personal computer and a bit stream board of the computer to form a virtual server of an ordered type video terminal testing system, thereby making it easier to test a video terminal. In the conventional apparatus for testing an ordered type video terminal, a server is required in order to test such a terminal. This server includes a memory system of a large capacity and computer capable of carrying out a high speed arithmetic operation. Therefore, its installation and movement are not easy, while its price is very high. Accordingly, it is uneconomical to procure it only for testing purposes.

Abstract: A method of extracting a color difference signal, a motion vector and motion compensator in HDTV, wherein motion vectors are multiplexed to one serial motion vector in a 4 step parallel process when compressing data, and in a motion compensation device for a memory address controller of HDTV, the first and second multiplexers are connected to data bus for horizontal address between a Raster format write and a memory of the address controller, and the third multiplexer is connected to a data bus for vertical address, and above the first to the third multiplexers selects addresses of color difference vertical/horizontal motion vector generator and luminance vertical/horizontal motion vector generator, and a motion compensator is structured to control motion compensation of the memory, and the output pixel from the memory is selected in the motion compensator by the motion pixel selector; motion vector, which is processed in 4 step parallel, is multiplexed to one serial motion vector, and the circuit is simply s