Patents by Inventor Takeshi Kuwata

Takeshi Kuwata 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).

  • Publication number: 20190223824
    Abstract: A radiographic apparatus includes: a hardware processor which generates image data of a radiographic image upon reception of external radiation, is capable of storing the generated image data in a storage, is capable of communicating with an external device via a communication unit, is capable of operating itself in a normal imaging mode or a memory imaging mode, and is capable of concurrently determining for a plurality of types of predetermined conditions whether each condition is satisfied. The hardware processor switches from the normal imaging mode to the memory imaging mode based on occurrence of the determination that at least one of a plurality of first predetermined conditions is satisfied in the normal imaging mode.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 25, 2019
    Inventors: Satoshi KOMIYA, Tetsuo Kubota, Takeshi Nukanobu, Masahiro Kuwata
  • Publication number: 20190230724
    Abstract: A radiographic communication system includes a radiographic device and an information processor. The radiographic device receives radiation to generate data of a radiographic image and that operates as a primary device in wireless communication. The information processor operates as a secondary device in the wireless communication. The information processor includes a memory, an operation interface, a communicator and a hardware processor. The memory stores combination information including a communication identifier and an address of the radiographic device. The operation interface is associated with the combination information. The hardware processor uses the communicator to establish communication with the radiographic device based on the communication identifier in the combination information in response to an operation of the operation interface.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 25, 2019
    Inventors: Masahiro KUWATA, Satoshi KOMIYA, Takeshi NUKANOBU, Tetsuo KUBOTA, Kentaro HARA
  • Patent number: 6519013
    Abstract: A liquid crystal display (LCD) is improved. A driving method for a LCD which has a liquid crystal layer interposed between the first electrode and the second electrode so that voltages to be applied to pixels are changed, wherein voltage levels in a selection time in a Pulse Width Modulation (PWM) driving method are the same level between two successive column electrodes so as to obtain a color display or a gray scale display which corresponds to an intermediate voltage applied to a pixel.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: February 11, 2003
    Assignees: Asahi Glass Company Ltd., Optrex Corporation
    Inventors: Makoto Nagai, Takeshi Kuwata, Masao Ozeki
  • Patent number: 6025822
    Abstract: A column electrode driving semiconductor integrated circuit for driving column electrodes in a liquid crystal display device to be driven by a multiple line selection method wherein the liquid crystal display device has a select and output circuit which selects a specified voltage value among voltage values having the member of levels corresponding to the member of simultaneously selected row electrodes, and applies the selected voltage value to each column electrode, wherein a memory unit including a control circuit stores display data and outputs the data on each row electrode in simultaneously selected lines, and an arithmetic circuit unit including an arithmetic processing circuit receives the data outputted from the memory unit and selection data indicating a voltage pattern applied to a selected row electrode and produces by arithmetic processing information of voltages selected by the select and output circuit unit.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: February 15, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Hiroyuki Motegi, Takeshi Kuwata, Yutaka Nakagawa, Akira Nakazawa
  • Patent number: 5953002
    Abstract: A driving method for a direct addressing type liquid crystal display device for displaying gradation by changing the amplitude of voltages applied to pixels, wherein a series of voltage pulses, as signal voltages, composed of a plurality of different voltage levels are applied in order to display a specified gradation, and for a display, a plurality kinds of gradation in which a part of the voltage levels is commonly used are selected.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: September 14, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Yoshinori Hirai, Akira Nakazawa, Makoto Nagai, Takeshi Kuwata, Hiroyuki Motegi, Kazuyoshi Kawaguchi
  • Patent number: 5900857
    Abstract: A method of driving a liquid crystal display device by selecting simultaneously a plurality of lines in a liquid crystal display element characterized in that display data are temporality stored in memories; the data are read out plural times from the memories, and arithmetic operation are performed to the read-out data to produce signals to be applied to data electrodes, wherein the picture area is divided into a plurality of picture area blocks each including scanning lines the number of which are a multiple of a natural number of simultaneously selected scanning lines; the memories are divided into a plurality of memory blocks each having capacity capable of reading and writing data displayed on the picture area blocks; fames for writing are made in synchronism with frames for reading the data, and a memory block undergoes a predetermined number of times of reading, and then new display data are written into said memory block.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: May 4, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Kazuyoshi Kawaguchi, Yoshinori Hirai
  • Patent number: 5831586
    Abstract: A method for forming a selection pulse sequence includes arranging, time-sequentially, selection pulse vectors which are applied to simultaneously selected scanning electrodes by repeating a subsequence which has a time period of 1/n (n is an integer of n.gtoreq.2) times one frame (a time period in which addressing operations are finished).
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: November 3, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Yoshinori Hirai, Akira Nakazawa, Makoto Nagai, Takeshi Kuwata
  • Patent number: 5774101
    Abstract: A method of driving an image display device including the steps of: dividing row electrodes of an image display device having a plurality of row electrodes and a plurality of column electrodes into a plurality of subgroups; selecting summarizingly one of the plurality of subgroups; applying voltages based on signals formed by expanding time-sequentially column vectors of an orthogonal matrix on the row electrodes; performing a gray scale display by a frame rate control (FRC) by using a plurality of frames; performing a space modulation shifting a phase of the FRC with a pixel block comprising a plurality of pixels as a unit; and wherein the phase of the space modulation is set such that a ratio of the columns each applying an equally effective voltage on all of the pixels in the column in each frame in displaying an intermediate gray scale level by all of the pixels belonging to the same subgroup is 40% or more on an average of all of the intermediate gray scale levels and all of the frames.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: June 30, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Yoshinori Hirai, Makoto Nagai, Akira Nakazawa, Kazuyoshi Kawaguchi, Takeshi Kuwata
  • Patent number: 5754157
    Abstract: A method of forming column signals for driving a liquid crystal display apparatus having a plurality of row electrodes and a plurality of column electrodes wherein a plurality of the row electrodes are selected as a batch; the column electrodes are applied with voltages based on orthogonal transformation signals which are obtained by transforming picture signals corresponding to the positions of the simultaneously selected row electrodes on a panel by an orthogonal function, and the row electrodes are applied with the voltages based on the orthogonal transformation signals; the formation of column signals from the picture signals corresponding to the positions of the simultaneously selected row electrodes on the panel includes a serial-parallel transforming step of transforming inputted picture signals into those having a predetermined bit length, a writing/reading step of reading the picture signals having a predetermined bit length after the picture signals have once been written in a memory; and an operati
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: May 19, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Temkar N. Ruckmongathan, Toru Ohbiki, Masami Ito, Goro Asari, Takanori Ohnishi
  • Patent number: 5734364
    Abstract: A method of driving a picture display device having a plurality (an M number) of row electrodes and a plurality of column electrodes, by selecting an L number (L.gtoreq.3) of row electrodes simultaneously and by applying to the row electrodes voltages based on signals obtained by developing in time sequence column vectors of an M row-N column orthogonal matrix S (having elements 1, -1 and 0), wherein column electrode display pattern vectors (x =x.sub.1, x.sub.2, . . . X.sub.M) which have as elements display patterns (1: OFF, -1: ON), corresponding to simultaneously selected row electrodes, on a specified column electrode, and column electrode voltage sequence vectors (y)=(y.sub.1, y.sub.2, . . . y.sub.N) which have as elements voltage levels, on the column electrode which consists of an N number of voltage pulses arranged in time sequence in a display cycle, have a relation of (y.sub.1, y.sub.2, . . . y.sub.N)=(x.sub.1, x.sub.2, . . . x.sub.M) (S), wherein when .DELTA.y.sub.1 =.vertline.y.sub.1,-y.sub.l-1 .
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: March 31, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Yoshinori Hirai, Akira Nakazawa, Makoto Nagai, Takeshi Kuwata
  • Patent number: 5689280
    Abstract: A display apparatus in which the light transmittance of a pixel selected by a scanning electrode and a data electrode is changed in correspondence with a difference of voltages applied to the scanning electrode and the data electrode has a display panel having a plurality of scanning electrodes and a plurality of data electrodes, a signified video signal forming device for forming signified video signals by distributing digital video signals in a picture to subpictures having the same number as bits each having a bit significance; an orthogonal function generator for generating orthogonal function signals having substantial orthogonality; an orthogonal transformation signal generator for receiving the signified video signals and the orthogonal function signals to operate and output data signals; a scanning voltage generator for receiving scanning signals to apply scanning voltages to the scanning electrodes of the display panel; and a data voltage generator for receiving data signals to apply data voltages to
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: November 18, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Goro Asari, Yutaka Nakagawa, Temkar N. Ruckmongathan, Takeshi Kuwata
  • Patent number: 5682177
    Abstract: A driving method of a matrix type liquid crystal display element including at least J.times.L (J and L are respectively integers of 2 or more) row electrodes and a plural number of column electrodes wherein the J.times.L row electrodes are divided into J row electrode subgroups each including n row electrodes so that the subgroups are selected as each batch to be driven. When voltages are applied to the row electrodes, either a voltage level of +V.sub.r or -V.sub.r (where V.sub.r >0) is applied at a selection time, when a voltage at a non-selection time is 0 (zero). Voltages applied to the column electrodes are selected from (L+1) voltage levels of V.sub.0, V.sub.1, . . . , V.sub.L (where V.sub.0 <V.sub.1 . . . <V.sub.L), and when a two-valued information of the j-th line electrode subgroup (j is an integer of any of 1 through J) in a specified column in the plural column electrodes is expressed by a column vector D.sub.j having L elements (where the elements of the vector D.sub.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 28, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Temkar Ruckmongathan, Yutaka Nakagawa, Hidemasa Koh, Hiroshi Hasebe, Takashi Yamashita, Hideyuki Nagano, Takanori Ohnishi
  • Patent number: 5644329
    Abstract: A display apparatus wherein the light transmittance of a pixel selected by a scanning electrode and a data electrode is changed in response to the difference of voltages applied to the scanning electrode and the data electrode, which comprises a display panel having a plurality of scanning electrodes and a plurality of data electrodes, a scanning voltage generator for applying a scanning voltage to the scanning electrodes of the display panel by receiving a scanning signal, a data voltage generator for applying a data voltage to the data electrodes of the display panel by receiving a data signal, an orthogonal function generator for generating an orthogonal function signal having substantially orthogonality, and a data signal forming circuit for operating the data signal based on a predetermined video signal and the orthogonal function signal generated from the orthogonal function generator, wherein the data signal forming circuit includes a field video signal converter for distributing signals for a single p
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: July 1, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Goro Asari, Temkar N. Ruckmongathan, Takeshi Kuwata, Yutaka Nakagawa
  • Patent number: 5596344
    Abstract: A driving method for a liquid crystal display element including L row electrodes and K column electrodes in which two kinds of data, data corresponding to a logical "0" and data corresponding to a logical "1", are used to display gray shades. The row electrodes are divided into row electrode subgroups which are selected as a batch. When the row electrode subgroups are selected, they have a positive voltage level with respect to a non-election voltage and a negative voltage level with respect to a selection voltage. A matrix of column vector components in which row voltages are time-sequentially arranged form a display cycle in each of the row electrode subgroups, and such a matrix has orthogonality. Row voltages are dispersively applied in a display cycle in each of the row electrode subgroups. Further, a number of column vector components K is related to a number of row electrodes L such that K is a minimum value satisfying the orthogonality and L is.ltoreq.2.sup.P =K, where K, L and P are integers.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 21, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Temkar Ruckmongathan, Yutaka Nakagawa, Hidemasa Koh, Hiroshi Hasebe, Takashi Yamashita, Hideyuki Nagano, Takanori Ohnishi
  • Patent number: 5548302
    Abstract: A method of driving a display element wherein a light transmittance of a pixel selected by a row electrode and a column electrode changes in accordance with a difference between voltages applied on the row electrode and the column electrode, is employed which satisfies several conditions.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: August 20, 1996
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Temkar N. Ruckmongathan, Yutaka Nakagawa, Hidemasa Koh, Akira Nakazawa, Takanori Ohnishi, Satoru Ihara
  • Patent number: 5489910
    Abstract: An image display device having an electro-optical medium interposed between a pair of electrode substrates composing a matrix electrode, a driving circuit for driving the electro-optical medium by selectively applying a voltage on the matrix electrode and a reference voltage generator for supplying the driving circuit with a predetermined driving voltage. A noise compensating circuit is interposed between the driving circuit and the reference voltage generator, the noise compensating circuit detecting a noise in a voltage supplied from the reference voltage generator to the electro-optical medium at a predetermined noise detecting position, forming a noise compensating voltage having a first polarity reverse to a second polarity of the noise by using the noise, and supplying the noise compensating voltage to the driving circuit.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: February 6, 1996
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Kohji Ikawa, Tatsushi Asakawa, Hiroshi Hasebe, Akira Nakazawa, Hideyuki Nagano, Takanori Ohnishi
  • Patent number: 5489919
    Abstract: A driving method of a liquid crystal display element having plural numbers of scanning electrodes and data electrodes where a J.times.L number (J and L are each integers.gtoreq.2) of scanning electrodes are divided into J subgroups each having L scanning electrodes so that the subgroups are selected and driven as a batch. The subgroups are selected while the following conditions are satisfied: (1) in L=k.multidot.N.multidot.T/.tau., a value satisfying k=10-250 is determined, where L is the number of row electrodes selected, N is the total number of row electrodes, T is a selection time of a single scanning electrode and .tau.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: February 6, 1996
    Assignee: Asashi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Temkar N. Ruckmongathan, Yutaka Nakagawa, Hidemasa Koh, Hiroshi Hasebe, Takashi Yamashita, Hideyuki Nagano, Takanori Ohnishi
  • Patent number: 5262881
    Abstract: A driving method of a matrix type liquid crystal display element comprising at least J.times.L number (J subgroup) of row electrodes and a plurality of column electrodes. When information of the j-th row electrode subgroup in a specified column is expressed by a column vector D.sub.j having an L number of elements, the following conditions are satisfied: (1) and j-th row electrode subgroup is selected so that the elements of a selection voltage vector which constitute a selection voltage matrix in which the product of a matrix and a transposed matrix of the same assumes a scalar multiple of the unit matrix is selected, and the selection voltage matrix comprising election voltage vectors arranged in a matrix are selected, and (2) when the j-th row electrode subgroup is selected, the voltage applied to the column electrodes to indicate a display information by means of the vector D.sub.j are determined as in the following items (a) and (b): (a) a vector .beta.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: November 16, 1993
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takeshi Kuwata, Temkar Ruckmongathan, Yutaka Nakagawa, Hidemasa Koh, Hiroshi Hasebe, Takashi Yamashita, Hideyuki Nagano, Takanori Ohnishi