Patents by Inventor Yasushi Fukunaga

Yasushi Fukunaga 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).

  • Patent number: 6049360
    Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input section, a video output section, a controller for selecting connection of each element to the video input or output section, and an image drawing section for reading and writing video data from and in the elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output sections can be adaptively varied.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: April 11, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Norifumi Yanai, Ryo Fujita, Koyo Katsura, Yasushi Fukunaga
  • Patent number: 5940087
    Abstract: A graphic processing apparatus for generating, displaying or printing characters and graphic data. A successive column access is used in which a row address is designated for access to a memory and data in different column addresses within the designated same row address are successively accessed and buffer means for buffering a series of data between an access by a processor and an access to a memory is provided. A program and image information for display are stored in a main memory. A frame buffer and the main memory are integrally configured simply and small in size.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: August 17, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Koyo Katsura, Yasushi Fukunaga, Ryo Fujita, Kazuyoshi Koga, Takehiko Nishida
  • Patent number: 5917496
    Abstract: The present invention relates to a three-dimensional graphic display apparatus for performing a hidden surface removal and color blending, and particularly to a configuration of a special purpose memory for graphics and a configuration of a graphic display apparatus using the special purpose memory. The special purpose memory for graphics according to the present invention comprises a memory cell for holding intensity information (RGB) and window information about each pixel therein, an XY coordinate converter for converting XY coordinates of a pixel to be written to a memory address, an intensity blending processor, and hidden-surface removal and window comparators, all of which are formed on the same chip.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: June 29, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Ryo Fujita, Mitsuru Soga, Yasushi Fukunaga, Takehiko Nishida
  • Patent number: 5917475
    Abstract: A display device has a touch pad and a display lamintated together to form a screen, That screen is connected to a controller which processes signals generated by physical contact with the touch pad and activates the display to display e.g. characters input by a stylus to the touch pad. The display device is connected to an external device (e.g. a computer) and video signals from the external device are received via a video input and may be displayed on the display. Also the controller can transmit to the external device via an output. Thus, the display can simultaneously display information from the external device and information input to the touch pad. If the controller is arranged to carry out character recognition, the display device may then act as a handwriting input device, with the handwritten information being incorporated with information in the external device and displayed.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 29, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Soshiro Kuzunuki, Yasushi Fukunaga, Hiroshi Shojima, Masaki Miura, Toshimi Yokota
  • Patent number: 5903667
    Abstract: In an information processing apparatus having a handwriting input unit made of an integral structure of a handwriting coordinate input device and a plane display, the screen of the handwriting input unit is constituted by one or more areas, and there are provided a form defining unit for defining in advance a process operation for each area and a stroke interpretation executing unit for executing the process operation defined by the form defining unit when a handwritten stroke is inputted to the area. It becomes therefore possible to input data with a realistic sense of writing data on a paper with a pen without intercepting human thinking processes, while considerably improving man-machine interface.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: May 11, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Soshiro Kuzunuki, Yasushi Fukunaga, Hiroshi Shojima, Toshifumi Arai, Masaki Miura, Toshimi Yokota
  • Patent number: 5900917
    Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input section, a video output section, a controller for selecting connection of each element to the video input or output section, and an image drawing section for reading and writing video data from and in the elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover the numbers of the elements respectively connected to the video input and output sections can be adaptively varied.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: May 4, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Norifumi Yanai, Ryo Fujita, Koyo Katsura, Yasushi Fukunaga
  • Patent number: 5864335
    Abstract: The present invention relates to an information processing system using a coordinate detection device and displays, and more specifically to an input-display integrated information processing system which allows the displays to be carried like paper and to be freely laid out and stacked together on a desk (coordinate input device). The system includes a layout determining unit for determining a layout of the display on said coordinate detection device, wherein the layout determining unit further comprises a display position coordinate detector that detects where in the coordinate space of the coordinate detection device the display for displaying an information is located, and a coordinate converter that converts the information into display coordinates. The layout determination is done by using markers attached to three of the four corners of the display.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: January 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Soshiro Kuzunuki, Hiroshi Shojima, Toshimi Yokota, Toshifumi Yokota, Masaki Miura, Keiko Gunji, Yasushi Fukunaga, Toshio Tanaka, Masaaki Kitajima
  • Patent number: 5841901
    Abstract: A pattern recognition system having a plurality of dictionaries, wherein handwritten input information is compared with patterns contained in the plurality of dictionaries so as to deliver a similar one of the patterns as a recognized result; The system comprises a controller which selects one pattern as a final recognized result from among recognized results based on the plurality of dictionaries, so as to deliver the selected pattern as its output. The controller evaluates summations of values previously set for respective candidate levels in the recognized results, for individual candidate patterns which exist in the recognized results based on the plurality of dictionaries, and it selects the pattern of the final recognized result on the basis of the summations. Thus, the recognized result most suited to a user is automatically derived from among the recognized results based on the plurality of dictionaries.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: November 24, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Toshifumi Arai, Hiroshi Shojima, Masaki Miura, Yasushi Fukunaga
  • Patent number: 5801706
    Abstract: A three-dimensional graphic display apparatus performs hidden surface removal and color blending. Particularly, the graphic display apparatus includes a configuration of a special purpose memory for graphics, thereby forming a configuration of a graphic display apparatus using the special purpose memory. The special purpose memory for graphics includes a memory cell holding intensity information (RGB) and window information about each pixel, an XY coordinate converter converting XY coordinates of a pixel to be written to a memory address, an intensity blending processor, and hidden-surface removal and window comparators, all of which are formed on the same chip.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: September 1, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Ryo Fujita, Mitsuru Soga, Yasushi Fukunaga, Takehiko Nishida
  • Patent number: 5706034
    Abstract: A graphic processing apparatus for generating, displaying or printing characters and graphic data. A successive column access is used in which a row address is designated for access to a memory and data in different column addresses within the designated same row address are successively accessed and buffer means for buffering a series of data between an access by a processor and an access to a memory is provided. A program and image information for display are stored in a main memory. A frame buffer and the main memory are integrally configured simply and small in size.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: January 6, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Koyo Katsura, Yasushi Fukunaga, Ryo Fujita, Kazuyoshi Koga, Takehiko Nishida
  • Patent number: 5680175
    Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input portion, a video output portion, a controller for selecting connection of each element to the video input or output portion, and an image drawing portion for reading and writing video data from and in the memory elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output portions can be adaptively varied.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: October 21, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Norifumi Yanai, Ryo Fujita, Koyo Katsura, Yasushi Fukunaga
  • Patent number: 5592565
    Abstract: A hand-written character recognition apparatus with a personal dictionary preparation function has a character recognition unit for comparing an input hand-written character data with a registered standard dictionary to recognize a most similar character pattern, and a display unit for selecting and displaying a display font corresponding to the recognized character pattern, so that a personal peculiar character or simplified character inputted can be recognized. When a personal dictionary is to be registered, the character to be registered is inputted by hand-writing, the character recognition unit compares the input hand-written character data with the standard dictionary to recognize a similar character pattern, and the recognized character code of the standard dictionary is selected as the character code to be registered.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: January 7, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Shojima, Soshiro Kuzunuki, Yasushi Fukunaga, Toshihiko Matsuda, Toshio Takekoshi, Masaki Miura, Junko Mori, Toshimi Mifune
  • Patent number: 5581796
    Abstract: In a case where a graphic image segment of which positional information is defined in a world coordinate system and of which size information is defined in a device coordinate system is developed to be displayed on a multi-window screen, the development processing performance is improved in peripheral portions of the window. A rectangular development area (first development area) associated with the window is expanded with consideration of a size information of a graphic segment so as to obtain a second development area. The second development area is compared with a rectangular area (an existence area) circumscribing a graphic image represented only with positional information of the graphic segment. As a result, whether or not the graphic segment is to be developed is determined. The first development area is reduced with consideration of size information of the graphic segment to produce a third development area.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: December 3, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Koga, Ryo Fujita, Koyo Katsura, Yasushi Fukunaga, Hideyuki Hara
  • Patent number: 5519449
    Abstract: An image composing and displaying apparatus includes frame memory constituent elements of an identical structure, a video input portion, a video output portion, a controller for selecting connection of each element to the video input or output portion, and an image drawing portion for reading and writing video data from and in the memory elements. The memory elements can be used for the input and output operations and hence the size thereof can be easily expanded; moreover, the numbers of the elements respectively connected to the video input and output portion can be adaptively varied.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: May 21, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Norifumi Yanai, Ryo Fujita, Koyo Katsura, Yasushi Fukunaga
  • Patent number: 5436639
    Abstract: An information processing system which comprises an integral input and display unit comprising a display which enables an object to be selectively displayed at one of a plurality of positions in a display area and a tablet having an input face overlaid on a display face of the display, the input and display face being disposed substantially horizontally, and a display whose display face is disposed substantially uprightly, wherein when an object is presented to a user in the display area of the display, a display position of the object is determined in response to at least one of a state of the user, a state of the input and display face, and a display state of the display, thereby enabling the object to be displayed at an easy-to-use position relative to the user's position.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: July 25, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Toshifumi Arai, Hiroshi Shojima, Soshiro Kuzunuki, Masaki Miura, Toshimi Yokota, Keiko Gunji, Kazuo Aisaka, Tooru Numata, Hideki Sakao, Yasushi Fukunaga
  • Patent number: 5371839
    Abstract: A rendering processor having a plurality of DDA control circuits such that in each DDA circuit, the coordinates of source and destination images and gradation values are computed. Depending on the computation result, source and destination data to the raster arithmetic unit are generated so as to control the raster arithmetic unit, which enables a plurality of pixels to be generated and to be written in the memory during a memory access.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: December 6, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Yasushi Fukunaga, Ryo Fujita, Kazuyoshi Koga, Isao Yasuda, Takeshi Kato
  • Patent number: 5191622
    Abstract: A hand-written character recognition apparatus with a personal dictionary preparation function has a character recognition unit for comparing an input hand-written character data with a registered standard dictionary to recognize a most similar character pattern, and a display unit for selecting and displaying a display font corresponding to the recognized character pattern, so that a personal peculiar character or simplified character inputted can be recognized. When a personal dictionary is to be registered, the character to be registered is inputted by hand-writing, the character recognition unit compares the input hand-written character data with the standard dictionary to recognize a similar character pattern, and the recognized character code of the standard dictionary is selected as the character code to be registered.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: March 2, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Shojima, Soshiro Kuzunuki, Yasushi Fukunaga, Toshihiko Matsuda, Toshio Takekoshi, Masaki Miura, Junko Mori, Toshimi Mifune
  • Patent number: 4958147
    Abstract: A graphic display processing system is disclosed, in which a two-dimensional pattern or an image of a three-dimensional pattern can be displayed on the display screen of a display device, and moreover it can be rapidly judged whether or not each graphic data on a display list formed in a graphic data buffer corresponds to a pattern in a pattern pick region (namely, pick aperture) set on the display screen. In more detail, display color data in the pick aperture is first read out of a frame memory for storing image data. In a case where an image of a three-dimensional pattern is displayed, depth values in the pick aperture are read out of a Z-buffer for storing depth values with respect to a displayed pattern.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: September 18, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Seiichi Kanema, Misato Nio, Yasushi Fukunaga, Takehiko Nishida
  • Patent number: 4878249
    Abstract: A pattern recognizing device is disclosed, in which the pattern recognition is effected by classifying all the parts of a stroke of an inputted pattern into three groups, those which are clearly arcs, those being clearly segments of line and those which are ambiguous, for which it is not possible to determine whether they are arcs or segments of line; forming a plurality of patterns of stroke structure, each of which is represented by data of a series of elements, which are arcs or segments of line, i.e.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: October 31, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Toshimi Mifune, Yasuo Morooka, Hiroshi Shojima, Junko Mori, Yasushi Fukunaga
  • Patent number: 4730186
    Abstract: A system using an input integrated flat panel display of an integrated structure, having an input device for inputting through handwriting characters, graphics, or points and a flat panel display laid upon the input device for displaying in accordance with an input point data input through handwriting. The frame memory of a large screen having a display screen larger than that of the flat panel display is arranged to be read out through the input device of the input integrated flat panel display. In addition, the readout contents of the large screen frame memory is arranged to be copied onto the flat display of the input integrated flat panel display. The input integrated flat panel display system can improve the man-machine performance while the amateur end user performs document processings, graphic processings and the like.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: March 8, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Kazuyoshi Koga, Yasushi Fukunaga, Soshiro Kuzunuki, Ryo Fujita