Patents by Inventor Tatsuya Shiki
Tatsuya Shiki 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: 7652356Abstract: To provide a tape carrier capable of suppressing the formation of wrinkles at a non-continuous portion of strength of the tape carrier and avoid the signal line breakage associated with bending operation. A driver IC is mounted on an insulation film tape, input terminal is arranged at one end and an output terminal is arranged at the other end of the insulation film tape, input signal lines and output signal lines are individually mounted between the driver IC and each terminal, and a resin applying region is arranged at a mounting portion of the driver IC. An independent dummy pattern without connecting destination to be electrically connected to is arranged near each end on the side not facing each terminal of the driver IC on the insulation film tape, and the respective end on the driver IC side of each dummy pattern is extended into the resin applying region.Type: GrantFiled: August 2, 2007Date of Patent: January 26, 2010Assignee: NEC LCD Technologies, Ltd.Inventor: Tatsuya Shiki
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Publication number: 20080043195Abstract: To provide a tape carrier capable of suppressing the formation of wrinkles at a non-continuous portion of strength of the tape carrier and avoid the signal line breakage associated with bending operation. A driver IC is mounted on an insulation film tape, input terminal is arranged at one end and an output terminal is arranged at the other end of the insulation film tape, input signal lines and output signal lines are individually mounted between the driver IC and each terminal, and a resin applying region is arranged at a mounting portion of the driver IC. An independent dummy pattern without connecting destination to be electrically connected to is arranged near each end on the side not facing each terminal of the driver IC on the insulation film tape, and the respective end on the driver IC side of each dummy pattern is extended into the resin applying region.Type: ApplicationFiled: August 2, 2007Publication date: February 21, 2008Applicant: NEC LCD TECHNOLOGIES, LTD.Inventor: Tatsuya Shiki
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Patent number: 6657619Abstract: A clamping circuit for supplying a clamped color signal to a gamma-correction circuit is provided with a clamping portion connected to a clamping voltage generating circuit. The clamping voltage generating circuit generates a clamping voltage in response to an individual control signal in such a way that the black level of a color signal coincides with the black level in an input/output characteristic of the gamma-correction circuit. The clamping portion adds this clamping voltage to the pedestal level of a color signal at a predetermined timing in response to a control signal, so as to absorb variations in black levels of the clamping levels and later-stage circuits including variation in the later-stage circuits.Type: GrantFiled: June 22, 2000Date of Patent: December 2, 2003Assignee: NEC LCD Technologies, Ltd.Inventor: Tatsuya Shiki
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Patent number: 6504523Abstract: An active-matrix LCD device drives the LCD panel by using a dot reversible driving technique. The switching between two sets of input signals or two resolution modes is conducted by applying a DC voltage between the pixel electrode and the common electrode in each pixel before restart of the image display of a switched signal. The DC voltage has the same polarity among the pixels in the pixel array to thereby reduce the flicker after the restart of the image display.Type: GrantFiled: November 28, 2000Date of Patent: January 7, 2003Assignee: NEC CorporationInventors: Noriaki Sugawara, Kimikazu Matsumoto, Kunimasa Itakura, Tatsuya Shiki, Toshikazu Shimizu, Shoichi Kuroha, Shinichi Nishida
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Patent number: 6292162Abstract: A driving circuit has a plurality of sample and hold circuits which are connected to data buses of a liquid crystal display panel. The data buses are divided into a plurality of groups. Each of the groups receives a picture signal to drive the data buses. A timing controller controls operation timing of the groups in response to a synchronizing signal and a clock signal to control each of the groups independently of one another.Type: GrantFiled: June 6, 1997Date of Patent: September 18, 2001Assignee: NEC CorporationInventor: Tatsuya Shiki
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Patent number: 5717467Abstract: A display controller including a frequency discriminator for attaining modes of horizontal and vertical frequencies of video signals inputted thereto according to horizontal and vertical sync signals, a memory for setting therein a screen mode matching the input video signals according to the determined frequency modes, and a horizontal timing signal generator and a vertical timing signal generator capable of arbitrarily setting horizontal and vertical display positions of the video signals. Obtaining the horizontal and vertical frequencies of the video signals, the controller conducts a control operation to generate horizontal and vertical timing signals associated with the horizontal and vertical frequencies. Even when the number of dots of the LCD panel is different from the number of dots supplied during a video display period from the input video signals, the resultant image can be presented in the central screen portion of the LCD panel.Type: GrantFiled: September 7, 1995Date of Patent: February 10, 1998Assignee: NEC CorporationInventor: Tatsuya Shiki
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Patent number: 5442372Abstract: In an apparatus for driving a liquid crystal display panel having N scan lines, shift registers are provided to drive the scan lines, and switching circuits are interposed among the shift registers. One of the switching circuits is selected to write a start pulse signal thereinto. Thus, an image having a smaller number of scan lines than N can be displayed at a center portion of the liquid crystal display panel.Type: GrantFiled: January 4, 1994Date of Patent: August 15, 1995Assignee: NEC CorporationInventor: Tatsuya Shiki
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Patent number: 5406308Abstract: In an apparatus for driving a liquid crystal display panel having signal lines and scan lines, the operation of a signal line driving circuit for sequentially driving the signal lines is started by a horizontal start timing signal which is obtained by delaying a horizontal synchronization signal with a first time period. Also, the operation of a scan line driving circuit for sequentially driving the scan lines is started by a vertical start timing signal which is obtained by delaying a vertical synchronization signal with a second time period. The first time period and the second time period are changed in accordance with a size of one frame of a video signal.Type: GrantFiled: February 1, 1994Date of Patent: April 11, 1995Assignee: NEC CorporationInventor: Tatsuya Shiki
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Patent number: 4947252Abstract: A ghost canceling apparatus provided with a reference waveform Fourier coefficient holding unit in which a normal ghost detection unit holds a Fourier coefficient produced by Fourier transforming a reference waveform; a nearby region Fourier transform unit for Fourier-transforming a nearby region of a reference waveform extracted from the received television signal and a normal Fourier transform unit for Fourier transforming a normal region of the reference waveform extracted from the received television signal; a calculation unit for dividing the output from the normal region Fourier transform unit by the output from the nearby region Fourier transform unit and then for multiplying a Fourier coefficient of the reference waveform Fourier coefficient holding unit; a reverse Fourier transform unit for reverse Fourier transforming the output of the calculation unit; a tap gain supplying unit for supplying the dummy normal ghost producing unit with the output of the reverse Fourier transform unit as a tap gain ofType: GrantFiled: March 22, 1989Date of Patent: August 7, 1990Assignee: NEC Home Electronics Ltd.Inventors: Michio Kobayashi, Reiichi Kobayashi, Tatsuya Shiki
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Patent number: 4897725Abstract: A ghost canceling circuit comprising a Fourier transforming circuit for Fourier transforming a reference waveform contained in the received television signal while converting the analogue signal into digital form, a device for holding and outputting a reference waveform Fourier coefficient obtained by Fourier transforming the reference waveform contained in the television signal at the transmission side, a signal processing portion in which the outputted reference waveform Fourier coefficient is divided by the result of the A/D conversion, the divided Fourier coefficient is reverse Fourier transformed, and the reverse Fourier transformed Fourier coefficient is supplied to a transversal filter recognizing it as a tap gain.Type: GrantFiled: March 13, 1989Date of Patent: January 30, 1990Assignees: NEC Home Electronics Ltd., Nippon Hoso KyokaiInventors: Tadaaki Tanaka, Fumiyoshi Sasaki, Tetsuro Miyazaki, Reiichi Kobayashi, Tatsuya Shiki, Michio Kobayashi
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Patent number: RE37551Abstract: A display controller including a frequency discriminator for attaining modes of horizontal and vertical frequencies of video signals inputted thereto according to horizontal and vertical sync signals, a memory for setting therein a screen mode matching the input video signals according to the determined frequency modes, and a horizontal timing signal generator and a vertical timing signal generator capable of arbitrarily setting horizontal and vertical display positions of the video signals. Obtaining the horizontal and vertical frequencies of the video signals, the controller conducts a control operation to generate horizontal and vertical timing signals associated with the horizontal and vertical frequencies. Even when the number of dots of the LCD panel is different from the number of dots supplied during a video display period from the input video signals, the resultant image can be presented in the central screen portion of the LCD panel.Type: GrantFiled: December 23, 1999Date of Patent: February 19, 2002Assignee: NEC CorporationInventor: Tatsuya Shiki