1
James R Holly: Hidden surface processor. GTI Corporation, Morland C Fischer, June 10, 1986: US04594673 (74 worldwide citation)

A high speed hidden surface processor capable of operating in real time and suitable for interaction with a computer-generated imagery or computer graphics system, whereby a realistic three-dimensional scene can be projected on a two-dimensional video display. The scene is formed by one or more poly ...


2
Shiraishi Naohito, Fujii Tatsuya, Fukushima Masanobu, Nakajima Tatsuya, Izawa Yasuhiro: Hidden surface processor. Ricoh, February 7, 1995: JP1995-037120

PURPOSE: To considerably avoid wasteful operation in a stereoscopic picture processor and to improve the processing speed. CONSTITUTION: A hidden surface processor in the stereoscopic picture processor displaying a three-dimensional solid on a two-dimensional screen is provided with a memory 11 stor ...


3
Shiraishi Naohito: Stereoscopic picture plotting processor. Ricoh, January 22, 1999: JP1999-015997

PROBLEM TO BE SOLVED: To validly use a frame memory, and to operate a mapping processing at a high speed. SOLUTION: The X and Y address information of a polygon, mapping pattern address, and Z value are calculated by DDA processors 43, 44, and 45 based on each geometrically converted endpoint inform ...


4
Shiraishi Naohito, Fujii Tatsuya, Fukushima Masanobu, Nakajima Tatsuya, Izawa Yasuhiro: Picture processor. Ricoh, September 22, 1994: JP1994-266850

PURPOSE: To provide a picture processor capable of executing high speed processing and executing the hit judging processing of an object hidden in a polygon. CONSTITUTION: This picture processor is provided with a geometric conversion circuit 2 for calculating the address information of the outline ...


5
Izawa Yasuhiro: Image processor. Ricoh, January 28, 1997: JP1997-027045

PROBLEM TO BE SOLVED: To compare Z values at high speed with high precision while reducing the capacity of a Z buffer memory by performing a hidden-surface process by using the Z value to which the number of a space used for perspective transformation is added. SOLUTION: A geometric transformation d ...


6
Shiraishi Naohito: Stereoscopic image processor. Ricoh, January 17, 1997: JP1997-016806

PROBLEM TO BE SOLVED: To provide a stereoscopic image processor which can perform the fast mapping processing by means of the Z buffer method. SOLUTION: This processor consists of a shape processor 20 which converts the address information on a polygon shape, the mapping pattern end point informatio ...