Patents by Inventor Kazutaka Tsuji
Kazutaka Tsuji 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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Publication number: 20060108412Abstract: A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from or in which information can be read out or written and having visible information. The method includes a step of encrypting the visible information of the sheet and storing the encrypted visible information in the electronic circuit chip, and a step of determining discriminatively the authenticity of the sheet by comparing the visible information of the sheet with the information stored in the electronic circuit chip.Type: ApplicationFiled: January 4, 2006Publication date: May 25, 2006Inventors: Chikashi Okamoto, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Chizuko Yasunobu, Asahiko Isobe, Yasuhiro Tsunemi, Hiroyuki Yagi
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Patent number: 7030556Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.Type: GrantFiled: September 2, 2003Date of Patent: April 18, 2006Assignee: Hitachi Displays, Ltd.Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
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Publication number: 20060066215Abstract: An upper bus electrode is formed as a laminated wire of a metal film lower layer, a metal film intermediate layer and a metal film upper layer. Al lower in electrode potential is used as a low resistance material for the metal film intermediate layer of the upper bus electrode, while Cr high in heat resistance and oxidation resistance and higher in electrode potential than Al is used for the metal film lower and upper layers disposed as upper and lower layers. Al and Cr are selectively etched so that the metal film lower layer projects on one side and has an undercut on the other side with respect to the metal film intermediate layer.Type: ApplicationFiled: September 30, 2005Publication date: March 30, 2006Inventors: Toshiaki Kusunoki, Masakazu Sagawa, Kazutaka Tsuji, Hiroshi Kikuchi, Yasushi Sano, Nobuyuki Ushifusa, Nobuhiko Fukuoka, Etsuko Nishimura, Takuya Takahashi
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Publication number: 20060065895Abstract: An interlayer insulator with a low taper angle is formed as a laminated film in which a silicon nitride film is formed on a silicon oxide film formed on the glass substrate side (field insulator side). Thus, an upper electrode of a cathode formed on the interlayer insulator is prevented from being broken, while a crossing portion between the upper electrode and a base electrode of the cathode is made low in capacitance. At the same time, sodium separated from glass of the substrate is blocked. Disconnection of the upper electrode is prevented due to the low taper angle of the interlayer insulator. Low capacitance is attained by increasing the film thickness of the interlayer insulator. The cathode is prevented from being contaminated with sodium separated from glass of the substrate.Type: ApplicationFiled: September 29, 2005Publication date: March 30, 2006Inventors: Toshiaki Kusunoki, Masakazu Sagawa, Kazutaka Tsuji
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Patent number: 7007854Abstract: A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from which information can be read cut or written and having visible information. The method includes a step of encrypting the visible information of the sheet and storing the encrypted visible information in the electronic circuit chip, and a step of determining discriminatively the authenticity of the sheet by comparing the visible information of the sheet with the information stored in the electronic circuit chip.Type: GrantFiled: September 30, 2003Date of Patent: March 7, 2006Assignees: Hitachi, Ltd., Hitachi Research InstituteInventors: Chikashi Okamoto, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Chizuko Yasunobu, Asahiko Isobe, Yasuhiro Tsunemi, Hiroyuki Yagi
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Publication number: 20060038479Abstract: In the display device having a plurality of electron emitter elements and an internal circuit connected to the electron emitter elements both being formed on a substrate and sealed within a sealing member, the present invention provides a lead line passing through the sealing member to connect the internal circuit with an external circuit and forms the internal circuit smaller in resistivity (specific resistance) than the lead line by e.g. forming the lead line thinner than the internal circuit to suppress voltage drop in the internal circuit as well as to secure the predetermined sealing condition of the electron emitter elements and the internal circuit.Type: ApplicationFiled: August 17, 2005Publication date: February 23, 2006Inventors: Nobuhiko Fukuoka, Nobuyuki Ushifusa, Toshiaki Kusunoki, Kazutaka Tsuji, Hiroshi Kikuchi
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Publication number: 20050194591Abstract: A non-contact identification semiconductor device is provided with a semiconductor chip including a receiving circuit that receives an inquiry to the non-contact identification semiconductor device, a memory that stores identification information of multiple bits and a sending circuit that sends the identification information. An antenna coupled to said semiconductor chip receives the identification information from said semiconductor chip and transmits the identification information outside of said non-contact semiconductor. The long side length of the semiconductor chip is not greater than 0.5 mm in plane dimension, and the identification information is stored by a pattern printed by an electron beam.Type: ApplicationFiled: April 8, 2005Publication date: September 8, 2005Inventors: Mitsuo Usami, Kazutaka Tsuji, Takeshi Saito, Akira Sato, Kenji Sameshima, Kazuo Takaragi, Chizuko Yasunobu
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Publication number: 20040156176Abstract: In a method of mounting a planar electronic circuit chip onto a flexible sheet together with another planar electronic element, the electronic circuit part and the another electric element are selected so that the planar surface of the another electric element is greater than the planar surface of the electronic circuit chip, and the another electric element and the electronic circuit chip are mounted on the sheet so that the planar surface of the another electric element and the planar surface of the electronic circuit chip are in parallel with the sheet surface, and the planer surface of the electronic circuit chip is accommodated within the planar surface of the another electric element as viewed in a direction perpendicular to the sheet surface.Type: ApplicationFiled: October 20, 2003Publication date: August 12, 2004Applicant: HITACHI, LTD.Inventors: Chikashi Okamoto, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Chizuko Yasunobu, Asahiko Isobe, Yasuhiro Tsunemi, Hiroyuki Yagi
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Patent number: 6773393Abstract: A shape-of-endoscope detecting apparatus generally includes a shape detection unit, a marker, a marker locator unit, and a display control unit. The shape detection unit detects the shape of a portion of an insertion unit of an endoscope inserted into a subject, and produces graphic data expressing the shape thereof. The marker is placed near a position on the subject at which the endoscope is inserted. The marker locator unit acquires the location information of the marker. The display control unit graphically indicates on a display device the shape of the portion inserted into a body cavity, which is detected by the shape detection unit, using as a reference point the location information of the marker acquired by the marker locator. A shape-of-endoscope detecting method generally includes the steps of placing a marker, locating the marker, detecting the shape of the position of an endoscope inserted into a subject, and controlling the display of the detected shape.Type: GrantFiled: August 3, 2000Date of Patent: August 10, 2004Assignee: Olympus Optical Co., Ltd.Inventors: Akira Taniguchi, Sumihiro Uchimura, Yasuhiro Yoshizawa, Takeshi Kawabata, Masanao Hara, Kazutaka Tsuji, Chieko Aizawa
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Patent number: 6773394Abstract: An endoscope shape detection system has a CPU included in a control unit. The CPU performs frequency sampling of digital data to calculate coordinates indicating the spatial positions of source coils incorporated in an insertion unit of an endoscope received in a patient and of marker coils placed on a patient. An inserted state of the insertion unit of the endoscope is estimated based on the calculated coordinate data indicating the positions of the source coils. Display data based on the shape of the endoscope is produced from the calculated coordinate data indicating the positions of the source coils, and output to a video RAM. Display data of the marker coils is produced from the calculated coordinate data indicating the positions of the marker coils, and output to the video RAM. Consequently, the positions of the markers are depicted together with the shape of the endoscope. The positional relationship between the insertion unit of the endoscope and a patient's body can therefore be ascertained.Type: GrantFiled: July 17, 2002Date of Patent: August 10, 2004Assignee: Olympus CorporationInventors: Akira Taniguchi, Chieko Aizawa, Yasuhiro Yoshizawa, Fumiyuki Onoda, Seiki Toriyama, Takeshi Kawabata, Katsuyoshi Sasagawa, Sumihiro Uchimura, Masanao Hara, Kazutaka Tsuji, Takayasu Miyagi, Hiroki Moriyama, Hiroshi Ishii, Yoshinao Oaki, Tsugio Okazaki, Jun Hasegawa, Yasuo Hirata, Tetsuo Nonami
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Publication number: 20040116775Abstract: A shape of endoscope detecting apparatus in accordance with the present invention consists mainly of a shape detection unit, a marker, a location information of marker acquisition unit, and a display control unit. The shape detection unit detects the shape of a portion of an insertion unit of an endoscope inserted into a subject, and produces graphic data expressing the shape thereof. The marker is placed near a position on the subject at which the endoscope is inserted. The location information of marker acquisition unit acquires the location information of the marker. The display control unit graphically indicates on a display device the shape of the portion inserted into a body cavity, which is detected by the shape detection unit, using as a reference the location information of the marker acquired by the location information of marker acquisition unit.Type: ApplicationFiled: October 14, 2003Publication date: June 17, 2004Applicant: Olympus Optical Co., Ltd.Inventors: Akira Taniguchi, Sumihiro Uchimura, Yasuhiro Yoshizawa, Takeshi Kawabata, Masanao Hara, Kazutaka Tsuji, Chieko Aizawa
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Publication number: 20040113550Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.Type: ApplicationFiled: September 2, 2003Publication date: June 17, 2004Applicant: HITACHI DISPLAYS, LTD.Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
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Patent number: 6731509Abstract: In a method of mounting a planar electronic circuit chip onto a flexible sheet together with another planar electronic element, the electronic circuit part and the another electric element are selected so that the planar surface of the another electric element is greater than the planar surface of the electronic circuit chip, and the another electric element and the electronic circuit chip are mounted on the sheet so that the planar surface of the another electric element and the planar surface of the electronic circuit chip are in parallel with the sheet surface, and the planer surface of the electronic circuit chip is accommodated within the planar surface of the another electric element as viewed in a direction perpendicular to the sheet surface.Type: GrantFiled: September 14, 2001Date of Patent: May 4, 2004Assignee: Hitachi, Ltd.Inventors: Chikashi Okamoto, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Chizuko Yasunobu, Asahiko Sobe, Yasuhiro Tsunemi, Hiroyuki Yagi
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Publication number: 20040060978Abstract: A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from or in which information can be read out or written and having visible information.Type: ApplicationFiled: September 30, 2003Publication date: April 1, 2004Applicants: HITACHI, LTD., HITACHI RESEARCH INSTITUTEInventors: Chikashi Okamoto, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Chizuko Yasunobu, Asahiko Isobe, Yasuhiro Tsunemi, Hiroyuki Yagi
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Patent number: 6705730Abstract: It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. 1, a light valve 103 of a projector is located roughly at the focus point of an illumination lens 102. Further, as shown in FIG. 2, a light source 101 is also located roughly at the focus point of the illumination lens 102. Consequently, it is possible to implement a miniaturized projector.Type: GrantFiled: August 31, 2001Date of Patent: March 16, 2004Assignee: Hitachi, Ltd.Inventors: Tetsuya Ohshima, Hiroki Kaneko, Kazutaka Tsuji, Akira Arimoto, Osamu Ebina, Masahiko Yatsu
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Patent number: 6659353Abstract: A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from which information can be read out or written and having visible information. The method includes a step of encrypting the visible information of the sheet and storing the encrypted visible information in the electronic circuit chip, and a step of determining discriminatively the authenticity of the sheet by comparing the visible information of the sheet with the information stored in the electronic circuit chip.Type: GrantFiled: November 27, 2001Date of Patent: December 9, 2003Assignees: Hitachi, Ltd., Hitachi Research InstituteInventors: Chikashi Okamoto, Kazuo Takaragi, Kazutaka Tsuji, Mitsuo Usami, Chizuko Yasunobu, Asahiko Isobe, Yasuhiro Tsunemi, Hiroyuki Yagi
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Patent number: 6650063Abstract: A plasma display panel comprises a transparent front panel plate including a display electrode and a protective layer covering at least the display electrode, a back panel plate, a discharge space formed by adhering the transparent front panel plate and the back panel plate to each other, and a phosphor layer formed to be exposed to the inside of the discharge space. The protective layer is made of a first metal oxide layer formed to cover the display electrode, and a second metal oxide layer formed to cover the first metal oxide layer. The linear thermal expansion coefficient of the second metal oxide layer is larger than that of the first metal oxide layer.Type: GrantFiled: February 26, 2002Date of Patent: November 18, 2003Assignee: Hitachi, Ltd.Inventors: Norihiro Uemura, Kazutaka Tsuji, Keizo Suzuki, Hiroshi Kajiyama
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Publication number: 20030090206Abstract: Disclosed is a plasma display panel comprising a transparent front panel plate comprising a display electrode and a metal oxide layer covering at least the display electrode, a back panel plate, a discharge space formed by adhering the transparent front panel plate and the back panel plate to each other, and a phosphor layer formed to be exposed to the inside of the discharge space. The metal oxide layer is made of a first metal oxide layer formed to cover the display electrode, and a second metal oxide layer formed to cover the first metal oxide layer, and the linear thermal expansion coefficient of the second metal oxide layer is larger than that of the first metal oxide layer. Using this metal oxide layer having the bi-layered structure as a protective layer for the display electrode, a plasma display panel capable of displaying highly minute images can be produced at low costs.Type: ApplicationFiled: February 26, 2002Publication date: May 15, 2003Inventors: Norihiro Uemura, Kazutaka Tsuji, Keizo Suzuki, Hiroshi Kajiyama
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Publication number: 20030055317Abstract: A shape-of-endoscope detection system has a CPU included in a control unit. The CPU performs frequency sampling on digital data to calculate coordinates indicating the spatial positions of source coils incorporated in an insertion unit of an endoscope and of marker coils. An inserted state of the insertion unit of the endoscope is estimated based on the calculated coordinate data indicating the positions of the source coils. Display data based on which the shape of the endoscope is depicted is produced from the calculated coordinate data indicating the positions of the source coils, and output to a video RAM. Display data based on which the marker coils are depicted is produced from the calculated coordinate data indicating the positions of the marker coils, and output to the video RAM. Consequently, the positions of the markers are depicted together with the shape of the endoscope. The positional relationship between the insertion unit of the endoscope and a patient's body can therefore be grasped.Type: ApplicationFiled: July 17, 2002Publication date: March 20, 2003Applicant: Olympus Optical Co., Ltd.Inventors: Akira Taniguchi, Chieko Aizawa, Yasuhiro Yoshizawa, Fumiyuki Onoda, Seiki Toriyama, Takeshi Kawabata, Katsuyoshi Sasagawa, Sumihiro Uchimura, Masanao Hara, Kazutaka Tsuji, Takayasu Miyagi, Hiroki Moriyama, Hiroshi Ishii, Yoshinao Oaki, Tsugio Okazaki, Jun Hasegawa, Yasuo Hirata, Tetsuo Nonami
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Publication number: 20030020878Abstract: It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. 1, a light valve 103 of a projector is located roughly at the focus point of an illumination lens 102. Further, as shown in FIG. 2, a light source 101 is also located roughly at the focus point of the illumination lens 102. Consequently, it is possible to implement a miniaturized projector.Type: ApplicationFiled: August 31, 2001Publication date: January 30, 2003Inventors: Tetsuya Ohshima, Hiroki Kaneko, Kazutaka Tsuji, Akira Arimoto, Osamu Ebina, Masahiko Yatsu