Patents by Inventor Fumihiro Tanaka

Fumihiro Tanaka 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: 6088124
    Abstract: A color image recording apparatus capable of reducing a memory area for storing input image data by storing the image data after converting them into indexes with a bit length shorter than that of the image data. It is decided whether or not color information just read has already been registered in a color information holding area, and if not, the color information is registered. Subsequently, it is decided whether the number of registrations of the color information exceeds an upper limit of registration, and if it exceeds, an error processing is carried out. In this case, neither the storing nor the drawing of the image data is performed. If the number does not exceed, an index attached to the color information data at the registration is stored in an image data holding area as pixel data of the image data.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: July 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumihiro Tanaka
  • Patent number: 6024437
    Abstract: An image recording apparatus having plural recording methods and permitting selection of a recording method in accordance with a desired level of record results during recording of image data to produce a difference in color between the record results due to changes in the recording methods when an image to be recorded is color data. The invention includes plural color conversion means corresponding to a plurality of recording methods so as to perform color conversion suitable for the selected recording method in order to prevent differences in the color of the record results from occurring.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: February 15, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumihiro Tanaka
  • Patent number: 5552905
    Abstract: This invention has as its object to provide an image recording apparatus, which can omit a color processing calculation process for designated colors of an image when color processing results for all the colors, which may be designated upon image drawings, can be held, and can increase an image recording processing speed without impairing color reproducibility of an image.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: September 3, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumihiro Tanaka
  • Patent number: 5519418
    Abstract: A recording apparatus has a recording head and a container for ink to be supplied to the recording head. An amount of ink expected to be used in the recording of image data is calculated. The amount of ink actually used in the recording is detected. Comparison of the expected amount of ink used with the actual amount permits a determination whether abnormal recording has occurred.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: May 21, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoyuki Nishikawa, Fumihiro Tanaka
  • Patent number: 5422985
    Abstract: An output apparatus comprises: a producing circuit for receiving code data indicative of a pattern to be generated and for producing a pattern based on the code data; an interruption instructing circuit for instructing the interruption of the outputting process; and a retreating circuit for retreating the code data which had already been received before the interruption was instructed in the case where the interruption has been instructed by the interruption instructing circuit. The code data is expressed by a page describing language. The preceding code data is retreated by a different data format when the outputting process has been interrupted. The recording process which has been interrupted can be restarted from the interrupted state by returning the retreated data from the auxiliary memory.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: June 6, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumihiro Tanaka
  • Patent number: 5406383
    Abstract: An output method and apparatus derive a plurality of respective time factors, each of which represents the time required to output a pattern in correspondence with a respective output resolution. The time factors are derived in response to data representing the pattern, and one of the output resolutions is selected for outputting the pattern in response to each of the plurality of respective derived time factors. As a result, the pattern can be output at the highest resolution possible in a set period of time.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: April 11, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumihiro Tanaka
  • Patent number: 4821115
    Abstract: A color hard copy apparatus converts an analog video signal of a still picture frame displayed on a color graphic display into binary video data to obtain a multicolor gradation picture. A single analog-to-digital converter samples the analog video signal a plurality of times at respectively different threshold levels, each threshold level being maintained constant during the sampling of the entire picture frame, to convert the analog video signal into corresponding binary video data. The binary video data are written in a picture memory at predetermined write-in addresses according to a predetermined multicolor gradation picture program, such as an organized dither program or a density pattern, and the binary video data are read out of the picture memory according to the predetermined multicolor gradation picture program to obtain binary picture data signals for use in printing a high-quality multicolor gradation picture corresponding to the desired picture frame displayed on the color graphic display.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: April 11, 1989
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Kenichi Matsushima, Fumihiro Tanaka, Kaneo Yamaguchi, Yoshio Shimada, Shinya Watanabe
  • Patent number: 4780759
    Abstract: A recording apparatus receives a video signal containing a horizontal sync signal and a data signal comprised of a given number of image bit data arranged within each horizontal scanning period, and stores the number of image bit data in synchronization with the horizontal sync signal. A voltage-controlled oscillator produces in synchronization with the horizontal sync signal a frequency signal having a frequency higher than that of the sync signal. A divider frequency-divides the frequency signal by a given factor to produce a number of sampling pulses corresponding to the given number of image bit data. A data sampling circuit receives the data signal for sampling therefrom the number of image bit data in response to the corresponding sampling pulses to thereby write the image bit data into memory. Another divider frequency-divides the frequency signal by the product of the given factor and the given number to produce a feedback signal.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: October 25, 1988
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Kenichi Matsushima, Fumihiro Tanaka, Yoshio Shimada, Kaneo Yamaguchi, Shinya Watanabe
  • Patent number: 4779140
    Abstract: A hard copy system regulatively processes a video signal with a settable regulatory parameter to produce regulated picture information which is reproducible as a hard copy. A multiplexer receives a plurality of video signals having different signal forms to selectively apply one of the video signals to the hard copy system. A memory stores a plurality of different regulatory parameters assigned to the respective video signals and determined according to the different signal forms thereof so as to optimize the regulative processing thereof. A controller operates when a selected video signal is processed for retrieving from the memory a regulatory parameter assigned to the selected video signal to set the retrieved regulatory parameter to thereby enable the hard copy system to produce optimally regulated picture information.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: October 18, 1988
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Kenichi Matsushima, Fumihiro Tanaka, Kaneo Yamaguchi, Yoshio Shimada, Shinya Watanabe
  • Patent number: 4713690
    Abstract: A sampling clock phase correction circuit of video signal to keep stably a phase of a sampling clock to an image signal. A delayed signal of a video sync signal is employed for a reference signal of a sampling clock generation circuit. The delay quantity of the video sync signal is controlled to sample stably the video image signal according to the comparison and discrimination of a phase relation between a sampling clock signal and a video sync signal by a phase detection circuit and a CPU circuit. A precise phase correction where a characteristic change of circuit elements by a temperature drift or the like is compensated can be attained even for a high frequency video signal exceeding 100 MHz.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: December 15, 1987
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Shinya Watanabe, Fumihiro Tanaka, Kaneo Yamaguchi, Yoshio Shimada, Kenichi Matsushima
  • Patent number: 4713691
    Abstract: An interface circuit of video signal hard copy apparatus for optimizing a phase of a sampling clock to an image signal. A delayed signal of a video sync signal is employed for a reference input signal of a sampling clock generation circuit. The delay quantity of the video sync signal is arbitrarily set by a control circuit. The delay quantity corresponding to the point of change of sampled data is detected by a CPU circuit according to the sequential comparison with some of the sampled data of an image signal in the plural delay quantities. A stable sampling can be attained even for a high frequency video signal exceeding 100 MHz by setting the optimum delay quantity according to the detected delay quantity.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: December 15, 1987
    Assignee: Seiko Instruments & Electronics Ltd.
    Inventors: Fumihiro Tanaka, Yoshio Shimada, Kaneo Yamaguchi, Kenichi Matsushima, Shinya Watanabe
  • Patent number: 4540992
    Abstract: A multicolored thermal transfer copying system needs an ink film having more than three colors successively. The accurate copying is performed by driving the plural platens via one metal roller, when plural thermal heads are used for transferring each color from the ink film.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: September 10, 1985
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Murato Moteki, Yoshio Shimada, Fumihiro Tanaka, Fumio Watanabe, Kazuyuki Komatsu
  • Patent number: 4239040
    Abstract: A capsule for discharging drugs into a live body or collecting samples from the body comprises an external cylinder having slidably mounted therein an internal cylinder. The internal cylinder is retained by a meltable thread at one end of the external cylinder against the biasing force of a compression spring and upon melting of the thread, the spring effects sliding of the internal cylinder to the other end of the external cylinder and during this sliding movement, a drug is pushed out of the external cylinder ahead of the moving internal cylinder or a body sample is withdrawn into the external cylinder behind the moving internal cylinder. An electric circuit including a tunable receiver responds to an externally transmitted electric signal to energize a heater for melting the thread to thereby effect sliding movement of the internal cylinder at the desired time.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: December 16, 1980
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Takeshi Hosoya, Fumihiro Tanaka, Kazuo Noguchi
  • Patent number: RE37691
    Abstract: An output apparatus comprises: a producing circuit for receiving code data indicative of a pattern to be generated and for producing a pattern based on the code data; an interruption instructing circuit for instructing the interruption of the outputting process; and a retreating circuit for retreating the code data which had already been received before the interruption was instructed in the case where the interruption has been instructed by the interruption instructing circuit. The code data is expressed by a page describing language. The preceding code data is retreated by a different data format when the outputting process has been interrupted. The recording process which has been interrupted can be restarted from the interrupted state by returning the retreated data from the auxiliary memory.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: May 7, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumihiro Tanaka