Patents by Inventor Masahisa Narita
Masahisa Narita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7142213Abstract: 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.Type: GrantFiled: April 13, 2004Date of Patent: November 28, 2006Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Publication number: 20040189649Abstract: 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.Type: ApplicationFiled: April 13, 2004Publication date: September 30, 2004Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Patent number: 6731291Abstract: 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.Type: GrantFiled: January 25, 2002Date of Patent: May 4, 2004Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Publication number: 20020070942Abstract: 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.Type: ApplicationFiled: January 25, 2002Publication date: June 13, 2002Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Patent number: 6356269Abstract: 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.Type: GrantFiled: January 13, 2000Date of Patent: March 12, 2002Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Patent number: 6092183Abstract: A compact and small compensating-electric-power data processor is realized by dividing a plurality of calculations to be carried out by a complex instruction into a number of executing units to be processed, instead of executing the calculations in parallel as in the past. For this purpose there is provided a decoder having a detecting part for decoding an instruction and for detecting whether the instruction is an instruction for executing a plurality of calculations, a field rearranging part for rearranging a part of the fields of said instruction based on a predetermined number of calculations to be processed if it is judged by said detecting part that the instruction is an instruction for executing a plurality of calculations, and a calculation control part for performing control to execute the calculations in plural cycles in synchronism with the order of said rearranged fields.Type: GrantFiled: March 10, 1995Date of Patent: July 18, 2000Assignee: Hitachi, Ltd.Inventors: Hidehito Takewa, Shigeru Matsuo, Shinji Fujiwara, Masahisa Narita
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Patent number: 6084599Abstract: 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.Type: GrantFiled: October 24, 1997Date of Patent: July 4, 2000Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Patent number: 5956263Abstract: A multiplication, division and square root extraction apparatus which calculates the solutions to addition, division and square root extraction functions by approximation using iteration has a multiplier, an adder-subtracter and a shifter of prescribed bit width connected to a bus. Iteration is conducted by inputting the output of the multiplier to the adder-subtracter or the shifter and returning the result to the input of the multiplier via the bus. A shifter and an arithmetic and logic unit connected to a second bus connected to the aforesaid bus via a switch have a greater bit width than the prescribed bit width and are used for large scale calculations, thus preventing a reduction in processing speed.Type: GrantFiled: January 31, 1997Date of Patent: September 21, 1999Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Masahisa Narita, Hisashi Kaziwara, Takeshi Asai, Shigeki Morinaga, Hiroyuki Kida, Mitsuru Watabe, Tetsuaki Nakamikawa, Shunpei Kawasaki, Junichi Tatezaki, Norio Nakagawa, Yugo Kashiwagi
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Patent number: 5748202Abstract: 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.Type: GrantFiled: July 5, 1995Date of Patent: May 5, 1998Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
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Patent number: 5631858Abstract: A multiplication, division and square root extraction apparatus which calculates the solutions to addition, division and square root extraction functions by approximation using iteration has a multiplier, an adder-subtracter and a shifter of prescribed bit width connected to a bus. Iteration is conducted by inputting the output of the multiplier to the adder-subtracter or the shifter and returning the result to the input of the multiplier via the bus. A shifter and an arithmetic and logic unit connected to a second bus connected to the aforesaid bus via a switch have a greater bit width than the prescribed bit width and are used for large scale calculations, thus preventing a reduction in processing speed.Type: GrantFiled: August 12, 1993Date of Patent: May 20, 1997Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Masahisa Narita, Hisashi Kaziwara, Takeshi Asai, Shigeki Morinaga, Hiroyuki Kida, Mitsuru Watabe, Tetsuaki Nakamikawa, Shunpei Kawasaki, Junichi Tatezaki, Norio Nakagawa, Yugo Kashiwagi
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Patent number: 5293558Abstract: A multiplication, division and square root extraction apparatus which calculates the solutions to addition, division and square root extraction functions by approximation using iteration has a multiplier, an adder-subtracter and a shifter of prescribed bit width connected to a bus. Iteration is conducted by inputting the output of the multiplier to the adder-subtracter or the shifter and returning the result to the input of the multiplier via the bus. A shifter and an arithmetic and logic unit connected to a second bus connected to the aforesaid bus via a switch have a greater bit width than the prescribed bit width and are used for large scale calculations, thus preventing a reduction in processing speed.Type: GrantFiled: July 3, 1990Date of Patent: March 8, 1994Assignees: Hitachi, Ltd, Hitachi Engineering Co., Ltd.Inventors: Masahisa Narita, Hisashi Kaziwara, Takeshi Asai, Shigeki Morinaga, Hiroyuki Kida, Mitsuru Watabe, Tetsuaki Nakamikawa, Shunpei Kawasaki, Junichi Tatezaki, Norio Nakagawa, Yugo Kashiwagi
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Patent number: 5192943Abstract: A cursor display control in a graphic display system is provided in which a storage range is provided for exclusive use for a cursor pattern and a desired shape is defined in the storage range to thereby perform a high-speed cursor movement. A display control apparatus in the graphic display system includes a memory for storing a cursor pattern, shift register for performing a shift processing in a non-display period of the cursor for positioning in the display screen, and parallel-serial converter for performing parallel to serial conversion at the display timing of the cursor, whereby the apparatus is suitable to be integrated in the form of an LSI and the cursor can be moved at a high speed on the screen.Type: GrantFiled: September 17, 1990Date of Patent: March 9, 1993Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Shigeru Matsuo, Tadashi Fukushima, Tooru Komagawa, Masahisa Narita
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Patent number: 4441832Abstract: The present invention relates to a serial printer comprising the mechanism for selecting one type by moving the mounted printing wheel and the carrier for moving said mechanism on the print sheet, has the object that the printing can be done at the maximum speed which is the optimum for the print wheel even in case any kind of printing wheel is mounted and is characterized in that the carrier shifting speed can be changed in accordance with the inertia of printing wheel and a shifting distance of printing wheel.Type: GrantFiled: March 24, 1982Date of Patent: April 10, 1984Assignee: Fujitsu LimitedInventors: Masahisa Narita, Osamu Tomita