Patents by Inventor Yoshitaka Iwasaki
Yoshitaka Iwasaki 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: 11231092Abstract: An object of the present invention is to provide a chain guide that eliminates the burden of assembling a guide shoe and a base member together, and prevents the guide shoe from being limited in its movement in the longitudinal guiding direction relative to the base member to improve durability. The guide shoe and the base member of the chain guide according to the invention are united by being integrally molded. The chain guide includes a fixed engaging part where the guide shoe engages with the base member such that the guide shoe is restricted from moving in the longitudinal guiding direction relative to the base member, and a movable engaging part where the guide shoe engages with the base member such that the guide shoe is slidable relative to the base member. A molding gate mark is positioned at or near the fixed engaging part.Type: GrantFiled: October 9, 2019Date of Patent: January 25, 2022Assignee: TSUBAKIMOTO CHAIN CO.Inventors: Yoshitaka Iwasaki, Kaori Mori, Yuji Kurematsu
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Patent number: 11227563Abstract: A display driver chip includes interface circuitry, image data processing circuitry, and drive circuitry. The interface circuitry is configured to receive first frame image data for a first frame image. The image data processing circuitry includes a buffer memory configured to store at least part of the first frame image data. The image data processing circuitry is configured to supply, based on the at least part of the first frame image data stored in the buffer memory, first display data for a first display area of a plurality of display areas of a display panel having a zigzag pixel arrangement. The drive circuit is configured to drive a display element in the first display area based on the first display data.Type: GrantFiled: June 23, 2020Date of Patent: January 18, 2022Assignee: Synaptics IncorporatedInventors: Kentaro Suzuki, Shigeru Ota, Yoshitaka Iwasaki
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Patent number: 11143100Abstract: To provide a tensioner that has a simple structure and is easy to assemble, and is configured to smoothly relieve pressure during oil release with reduced flow resistance so that the oil pressure in an oil pressure chamber is kept stable in a favorable manner. A relief valve unit includes a cap member that fits with a seat member to retain a stopper member inside the seat member. An external relief hole, which causes a relief-side space in a plunger hole to communicate with the outside of a plunger, opens radially in an outer circumferential surface of the plunger.Type: GrantFiled: December 19, 2018Date of Patent: October 12, 2021Assignee: TSUBAKIMOTO CHAIN CO.Inventors: Yoshitaka Iwasaki, Masanori Watanabe, Osamu Yoshida, Yuji Kurematsu, Yuichiro Ishikawa
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Patent number: 11037518Abstract: A display driver is disclosed that includes: an external interface circuit having input modes as interface modes to input display data. The display driver keeps the scan driving of a display panel stopped during a predetermined period until the driving of the display panel by display data input in the interface mode after switching is enabled in case that the interface mode of the external interface circuit is switched in the middle of driving the display panel based on display data input through the external interface circuit.Type: GrantFiled: January 19, 2016Date of Patent: June 15, 2021Assignee: Synaptics Japan GKInventors: Go Toyoda, Takashi Nose, Yoshitaka Iwasaki, Akihito Kumamoto
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Publication number: 20210027741Abstract: A display driver chip includes interface circuitry, image data processing circuitry, and drive circuitry. The interface circuitry is configured to receive first frame image data for a first frame image. The image data processing circuitry includes a buffer memory configured to store at least part of the first frame image data. The image data processing circuitry is configured to supply, based on the at least part of the first frame image data, supply a first display data for a first display area of a plurality of display areas of a display panel having a zigzag pixel arrangement. The drive circuit is configured to drive a display element in the first display area based on the first display data.Type: ApplicationFiled: June 23, 2020Publication date: January 28, 2021Inventors: Kentaro Suzuki, Shigeru Ota, Yoshitaka Iwasaki
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Publication number: 20200116240Abstract: An object of the present invention is to provide a chain guide that eliminates the burden of assembling a guide shoe and a base member together, and prevents the guide shoe from being limited in its movement in the longitudinal guiding direction relative to the base member to improve durability. The guide shoe and the base member of the chain guide according to the invention are united by being integrally molded. The chain guide includes a fixed engaging part where the guide shoe engages with the base member such that the guide shoe is restricted from moving in the longitudinal guiding direction relative to the base member, and a movable engaging part where the guide shoe engages with the base member such that the guide shoe is slidable relative to the base member. A molding gate mark is positioned at or near the fixed engaging part.Type: ApplicationFiled: October 9, 2019Publication date: April 16, 2020Applicant: TSUBAKIMOTO CHAIN CO.Inventors: Yoshitaka Iwasaki, Kaori Mori, Yuji Kurematsu
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Patent number: 10503336Abstract: A semiconductor device includes an analog front end and processing circuitry. The analog front end is configured to obtain capacitance detection data depending on capacitances of a plurality of sense electrodes of a liquid crystal display panel. The processing circuitry is configured to generate touch sensing data associated with a current touch sensing frame, based on capacitance detection data associated with the current touch sensing frame and capacitance detection data associated with a former touch sensing frame selected in response to a state in which the liquid crystal display panel is placed in the current touch sensing frame.Type: GrantFiled: April 24, 2018Date of Patent: December 10, 2019Assignee: Synaptics Japan GKInventors: Nobukazu Tanaka, Takayuki Noto, Yoshitaka Iwasaki
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Publication number: 20190277370Abstract: To provide a tensioner that is simply structured and easy to assemble, and that is capable of preventing plunger deformation during press-fitting of a relief valve unit, obviating the need for outside diameter grinding after the assembling, and reducing the thickness of the side walls of the plunger. A relief mechanism, which releases oil inside an oil pressure chamber to the outside of the plunger when the oil pressure in the oil pressure chamber becomes high, has a fixing member that is made of resin, that is located between the outer circumference of the relief valve unit and the inner circumference of the plunger hole, and that fixes the relief valve unit in the plunger hole on the front side thereof.Type: ApplicationFiled: March 6, 2019Publication date: September 12, 2019Applicant: TSUBAKIMOTO CHAIN CO.Inventors: Yoshitaka Iwasaki, Masanori Watanabe
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Publication number: 20190195123Abstract: To provide a tensioner that has a simple structure and is easy to assemble, and is configured to smoothly relieve pressure during oil release with reduced flow resistance so that the oil pressure in an oil pressure chamber is kept stable in a favorable manner. A relief valve unit includes a cap member that fits with a seat member to retain a stopper member inside the seat member. An external relief hole, which causes a relief-side space in a plunger hole to communicate with the outside of a plunger, opens radially in an outer circumferential surface of the plunger.Type: ApplicationFiled: December 19, 2018Publication date: June 27, 2019Applicant: TSUBAKIMOTO CHAIN CO.Inventors: Yoshitaka Iwasaki, Masanori Watanabe, Osamu Yoshida, Yuji Kurematsu
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Patent number: 10176773Abstract: A semiconductor device and a mobile terminal are described herein. In one example, a semiconductor device is provided that includes: a power-source part; an interface part; a logic part; and a driving part. In the semiconductor device, the power-source part includes a power-source-cutoff-detection circuit operable to detect a first state in which supply of an external power source is cut off. The logic part includes: a data-cutoff-detection circuit operable to detect a second state in which supply of stream data accompanied by synchronizing signals from outside the semiconductor device is cut off undesirably; and a control circuit operable to perform control for having the driving part cope with the power source cutoff with the power-source-cutoff-detection circuit detecting the first state or the data-cutoff-detection circuit detecting the second state.Type: GrantFiled: January 18, 2016Date of Patent: January 8, 2019Assignee: Synaptics Japan GKInventors: Yoshitaka Iwasaki, Takashi Oyama, Akihito Kumamoto, Satoshi Yamaguchi
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Publication number: 20180329536Abstract: A semiconductor device includes an analog front end and processing circuitry. The analog front end is configured to obtain capacitance detection data depending on capacitances of a plurality of sense electrodes of a liquid crystal display panel. The processing circuitry is configured to generate touch sensing data associated with a current touch sensing frame, based on capacitance detection data associated with the current touch sensing frame and capacitance detection data associated with a former touch sensing frame selected in response to a state in which the liquid crystal display panel is placed in the current touch sensing frame.Type: ApplicationFiled: April 24, 2018Publication date: November 15, 2018Inventors: Nobukazu TANAKA, Takayuki NOTO, Yoshitaka IWASAKI
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Publication number: 20160232867Abstract: A semiconductor device and a mobile terminal are described herein. In one example, a semiconductor device is provided that includes: a power-source part; an interface part; a logic part; and a driving part. In the semiconductor device, the power-source part includes a power-source-cutoff-detection circuit operable to detect a first state in which supply of an external power source is cut off. The logic part includes: a data-cutoff-detection circuit operable to detect a second state in which supply of stream data accompanied by synchronizing signals from outside the semiconductor device is cut off undesirably; and a control circuit operable to perform control for having the driving part cope with the power source cutoff with the power-source-cutoff-detection circuit detecting the first state or the data-cutoff-detection circuit detecting the second state.Type: ApplicationFiled: January 18, 2016Publication date: August 11, 2016Inventors: Yoshitaka IWASAKI, Takashi OYAMA, Akihito KUMAMOTO, Satoshi YAMAGUCHI
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Publication number: 20160217763Abstract: A display driver is disclosed that includes: an external interface circuit having input modes as interface modes to input display data. The display driver keeps the scan driving of a display panel stopped during a predetermined period until the driving of the display panel by display data input in the interface mode after switching is enabled in case that the interface mode of the external interface circuit is switched in the middle of driving the display panel based on display data input through the external interface circuit.Type: ApplicationFiled: January 19, 2016Publication date: July 28, 2016Inventors: Go TOYODA, Takashi NOSE, Yoshitaka IWASAKI, Akihito KUMAMOTO
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Patent number: 7535451Abstract: There are provided a liquid crystal drive method, a liquid crystal display system and a liquid crystal drive control device, which can realize low power consumption at an alternating current drive of a liquid crystal panel. A common voltage given to a common electrode of a liquid crystal is switched between a positive phase and a negative phase. Display data is converted in such a manner that first display data and second display data selecting two of a plurality of gradation voltages in which magnitudes of potential differences in the pixel electrodes in the positive phase and the negative phase with reference to the common voltage corresponding to display data in a display memory are the same are in the same bit pattern except for one specified bit. For example, bit allocation of positive and negative gradation display data is made in such a manner that low-order bits other than the highest order bit are symmetric up and down in binary with respect to the middle.Type: GrantFiled: April 13, 2004Date of Patent: May 19, 2009Assignee: Renesas Technology Corp.Inventors: Shinobu Nohtomi, Shigeru Ota, Shinya Suzuki, Yoshitaka Iwasaki, Masahito Fujihira
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Publication number: 20090122038Abstract: A semiconductor circuit with the reduced scale of circuitry and a semiconductor integrated circuit chip which is obtained by integrating the semiconductor circuit and enables chip size reduction are provided. For this purpose, a two-decode method is used. The method uses: a pre-decode circuit comprising a first decoder of the preceding stage which decodes an arbitrary bit of an address signal of eight bits and a second decoder of the preceding stage which decodes the remaining bits; level conversion circuits which shift the output of the pre-decode circuit; and post-decode circuits which decode the decode outputs of the decoders in the pre-decode circuit, level-converted through the level conversion circuits.Type: ApplicationFiled: January 7, 2009Publication date: May 14, 2009Inventors: Toshikazu TACHIBANA, Yoshitaka Iwasaki, Kazuya Endo, Goro Sakamaki
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Patent number: 7492341Abstract: A semiconductor circuit with the reduced scale of circuitry and a semiconductor integrated circuit chip which is obtained by integrating the semiconductor circuit and enables chip size reduction are provided. For this purpose, a two-decode method is used. The method uses: a pre-decode circuit comprising a first decoder of the preceding stage which decodes an arbitrary bit of an address signal of eight bits and a second decoder of the preceding stage which decodes the remaining bits; level conversion circuits which shift the output of the pre-decode circuit; and post-decode circuits which decode the decode outputs of the decoders in the pre-decode circuit, level-converted through the level conversion circuits.Type: GrantFiled: July 22, 2004Date of Patent: February 17, 2009Assignee: Renesas Technology Corp.Inventors: Toshikazu Tachibana, Yoshitaka Iwasaki, Kazuya Endo, Goro Sakamaki
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Publication number: 20060208996Abstract: A two-stage decode system is provided which uses a pre-stage decoder comprising a pre-stage first decoder which decodes a bit of arbitrary part of address signals and a pre-stage second decoder which decodes the remaining bits, level shifters which respectively shift the levels of outputs of the pre-stage decoder, and post-stage decoders which respectively decode the decode outputs of the respective decoders in the pre-stage decoder, which have been level-shifted by the level shifters.Type: ApplicationFiled: January 24, 2006Publication date: September 21, 2006Inventors: Toshikazu Tachibana, Yoshitaka Iwasaki, Kazuya Endo, Goro Sakamaki
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Publication number: 20050057549Abstract: A semiconductor circuit with the reduced scale of circuitry and a semiconductor integrated circuit chip which is obtained by integrating the semiconductor circuit and enables chip size reduction are provided. For this purpose, a two-decode method is used. The method uses: a pre-decode circuit comprising a first decoder of the preceding stage which decodes an arbitrary bit of an address signal of eight bits and a second decoder of the preceding stage which decodes the remaining bits; level conversion circuits which shift the output of the pre-decode circuit; and post-decode circuits which decode the decode outputs of the decoders in the pre-decode circuit, level-converted through the level conversion circuits.Type: ApplicationFiled: July 22, 2004Publication date: March 17, 2005Inventors: Toshikazu Tachibana, Yoshitaka Iwasaki, Kazuya Endo, Goro Sakamaki
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Publication number: 20050001798Abstract: There are provided a liquid crystal drive method, a liquid crystal display system and a liquid crystal drive control device, which can realize low power consumption at an alternating current drive of a liquid crystal panel. A common voltage given to a common electrode of a liquid crystal is switched between a positive phase and a negative phase. Display data is converted in such a manner that first display data and second display data selecting two of a plurality of gradation voltages in which magnitudes of potential differences in the pixel electrodes in the positive phase and the negative phase with reference to the common voltage corresponding to display data in a display memory are the same are in the same bit pattern except for one specified bit. For example, bit allocation of positive and negative gradation display data is made in such a manner that low-order bits other than the highest order bit are symmetric up and down in binary with respect to the middle.Type: ApplicationFiled: April 13, 2004Publication date: January 6, 2005Inventors: Shinobu Nohtomi, Shigeru Ota, Shinya Suzuki, Yoshitaka Iwasaki, Masahito Fujihira
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Patent number: 4700791Abstract: This invention provides an electronic scale printer, and more particularly an electronic scale printer in which a printer is connected electrically to the electronic scale used in a department store or supermarket etc., and required data are printed on a printing sheet under an instruction from the electronic scale and issued from the printer. The invention provides a printer capable of issuing both a label and a receipt through one printing means and more particularly an electronic scale printer in which either a label or a receipt corresponding to the kind of printing sheet stored in a cassette is printed and issued under proper replacement of the cassette having printing sheet for label stored therein with a cassette having a printing sheet for receipt stored therein.Type: GrantFiled: April 16, 1986Date of Patent: October 20, 1987Assignee: Teraoka Seiko Co., Ltd.Inventors: Yoshitaka Iwasaki, Kunio Mori, Yoshio Tanabe