Antonelli, Terry, Stout & Kraus, LLP
Microprocessor, and graphics processing apparatus and method using the same
 A microprocessor for processing a large quantity of graphics data. The microprocessor independent of a CPU has two ports, and performs an instruction fetch and a data access or a memory access simultaneously to two memories mounted on separate buses. A graphics processing apparatus provided by the microprocessor transfers the graphics data between a system memory and a frame memory at high speeds. 
Hitachi, Ltd.
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Syoji Shigeru Takashi Hiromichi Tooru Tadashi
Yoshida Matsuo Miyamoto Yamada Komagawa Fukushima