1
Hideo Maejima, Koyo Katsura, Toshimasa Kihara, Yasushi Akao: Data processing apparatus with clock signal control by microinstruction for reduced power consumption and method therefor. Hitachi, Antonelli Terry & Wands, September 30, 1986: US04615005 (140 worldwide citation)

Disclosed is a method of controlling the supply of a clock signal to a logic circuit, especially, a logic circuit composed of C-MOS gates for further reducing the power consumption. According to the control method, a clock signal supply inhibit instruction is stored, so that, when this instruction i ...


2
Toshifumi Arai, Kimiyoshi Machii, Koyo Katsura, Hideyuki Watanabe: Pen type input device with camera. Hitachi, Hitachi Via Mechanics, Antonelli Terry Stout and Kraus, February 28, 2006: US07006134 (95 worldwide citation)

A pen type input device with a camera has improved usability as a result in improved construction of the device. The pen type input device with the camera is adapted for use in detecting both of a horizontally elongated object and a vertically elongated object. On the other hand, means for pointing ...


3
Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki: Image data processor for processing pixel data in block buffer. Hitachi, Hitachi Engineering, Antonelli Terry Stout & Kraus, May 5, 1998: US05748202 (85 worldwide citation)

In a device and system which perform processing, (displaying and outputting) of image data, the amount of data transferred between a memory holding the image data and a processor processing the image data is limited, thereby a great amount of data can be processed at high speed.


4
Koyo Katsura, Shigeru Matsuo, Jun Sato, Takashi Sone, Yoshikazu Yokota, Masahiko Kikuchi: Graphic processing system having bus connection control capable of high-speed parallel drawing processing in a frame buffer and a system memory. Hitachi, Hitachi Engineering, Antonelli Terry Stout & Kraus, September 3, 1991: US05046023 (69 worldwide citation)

A graphic processing system including a main memory for storing a program and information corresponding to pixels, a main processor for effecting an execution processing of a program transferred from the main memory or from an external device so as to control the system, display/output devices such ...


5
Kazuyoshi Koga, Ryo Fujita, Koyo Katsura, Katsunori Suzuki, Toshiyuki Kuwana: Graphics system. Hitachi, Antonelli Terry Stout & Kraus, July 24, 2001: US06266072 (51 worldwide citation)

A graphics system which accelerates generation of pixels including transparent objects by simply adding more rendering devices. The system has composition means and a plurality of rendering devices each comprising a geometric processor, a rendering processor and a frame memory that holds color, dept ...


6
Tetsuya Shimomura, Shigeru Matsuo, Koyo Katsura, Tatsuki Inuzuka, Yasuhiro Nakatsuka: Data processor having unified memory architecture providing priority memory access. Hitachi, Antonelli Terry Stout & Kraus, December 25, 2001: US06333745 (49 worldwide citation)

In order to reduce degradation of the processing performance of the data processor due to use of a part of the main memory as a display frame buffer, when an access request to the memory is generated from the CPU, the memory controller holds it once, requests the display controller to stop the acces ...


7
Koyo Katsura, Hideo Maejima, Hisashi Kajiwara: Graphic processing apparatus. Hitachi Engineering, Hitachi, Antonelli Terry & Wands, October 18, 1988: US04779210 (44 worldwide citation)

Herein disclosed is a graphic processing apparatus which uses a CRT of raster scanning type. The graphic processing apparatus has functions to compare and judge whether or not within the range of a predetermined region thereby to effect the drawing operation, to compare drawing picture element data ...


8
Koyo Katsura, Hideo Maejima, Hisashi Kajiwara: Graphic pattern processing apparatus. Hitachi, Hitachi Engineering, Antonelli Terry & Wands, August 29, 1989: US04862150 (43 worldwide citation)

A graphic pattern processing apparatus using a raster scan type CRT is disclosed. The graphic pattern processing apparatus can update one-pixel data, translate a logical address to a physical address and transfer data in a display memory, at a high speed. The graphic pattern processing apparatus com ...


9
Keiko Abe, Soshiro Kuzunuki, Koyo Katsura, Toshimi Yokota, Masaki Miura: Sentence processing apparatus and method thereof,utilizing dictionaries to interpolate elliptic characters or symbols. Hitachi, Antonelli Terry Stout & Kraus, January 9, 2001: US06173253 (35 worldwide citation)

A document or sentence processing apparatus having an input unit for inputting characters, a display unit for displaying input characters and a processing unit for converting and editing the input characters, in which the processing unit has a candidate word extraction unit which extracts candidates ...


10
Keiko Gunji, Koyo Katsura, Soshiro Kuzunuki, Masaki Miura, Toshimi Yokota: Apparatus for recognizing input character strings by inference. Hitachi, Antonelli Terry Stout & Kraus, June 15, 2004: US06751605 (32 worldwide citation)

A character recognition apparatus for inferring the entire character string solely from a user-input handwritten keyword and displaying the inferred result as a candidate character string.