Patents by Inventor Kazuo Tsubouchi
Kazuo Tsubouchi 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: 8311146Abstract: A transmission device (10) includes: a series/parallel converter (11); an MSK modulator (31) for modulating a signal on a channel basis; a D/A converter (13); a frequency converter (14a) for conversion into different carrier frequencies; a synchronization circuit (32); an amplifier (15); a multiplexer (16) for multiplexing amplification signals; and an antenna (19).Type: GrantFiled: March 4, 2008Date of Patent: November 13, 2012Assignees: Mitsubishi Electric Corporation, Tohoku UniversityInventors: Akinori Fujimura, Yasushi Sogabe, Fumio Ishizu, Tadashi Takagi, Hiroyuki Nakase, Kazuo Tsubouchi, Suguru Kameda, Shoichi Oshima
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Patent number: 8046664Abstract: An information processing apparatus is configured to be backed up by a battery so that information in a main memory of the apparatus can be retained when a power supply for the apparatus is stopped. The apparatus stores kernel information in a kernel information table at a time of an initial program loading so that the kernel information stored in the kernel information table can be delivered to a kernel for restarting a program. The program can be started by receiving the kernel information from the kernel information table without retrieving the program from a memory medium or re-generating the kernel information. The apparatus with an operating system that has a relocation function for use in a vehicle can thus have a reduced system startup time.Type: GrantFiled: December 18, 2007Date of Patent: October 25, 2011Assignee: Denso CorporationInventor: Kazuo Tsubouchi
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Patent number: 7876031Abstract: A piezoelectric thin-film acoustic wave device formed of a piezoelectric thin film of AlN on the +C plane and having the polarization strength of not lower than 0.63×10?20 F/V and an information processing unit using the same are disclosed. This is the result of the inventors having studied the factors other than the C-axis orientation affecting the electromechanical coupling factor and developing a method of improving the electromechanical coupling factor in view of the occasional fact that the electromechanical coupling factor cannot be improved by improving the C-axis orientation and the electromechanical coupling factor required for the piezoelectric thin-film acoustic wave device is not obtained. In such a case, the receiving sensitivity of the receiving system may be deteriorated and the transmission strength of the transmission system is required to be increased undesirably having an adverse effect on the power saving efforts.Type: GrantFiled: October 29, 2009Date of Patent: January 25, 2011Assignee: Hitachi Media Electronics Co., Ltd.Inventors: Takashi Shiba, Kazuo Tsubouchi, Kensei Uehara, Hiroyuki Nakase, Suguru Kameda, Yoji Isota, Yasuo Cho
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Patent number: 7714485Abstract: A piezoelectric thin-film acoustic wave device formed of a piezoelectric thin film of AlN on the +C plane and having the polarization strength of not lower than 0.63×10?20 F/V and an information processing unit using the same are disclosed. This is the result of the inventors having studied the factors other than the C-axis orientation affecting the electromechanical coupling factor and developing a method of improving the electromechanical coupling factor in view of the occasional fact that the electromechanical coupling factor cannot be improved by improving the C-axis orientation and the electromechanical coupling factor required for the piezoelectric thin-film acoustic wave device is not obtained. In such a case, the receiving sensitivity of the receiving system may be deteriorated and the transmission strength of the transmission system is required to be increased undesirably having an adverse effect on the power saving efforts.Type: GrantFiled: May 30, 2006Date of Patent: May 11, 2010Assignee: Hitachi Media Electronics Co., Ltd.Inventors: Takashi Shiba, Kazuo Tsubouchi, Kensei Uehara, Hiroyuki Nakase, Suguru Kameda, Yoji Isota, Yasuo Cho
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Publication number: 20100054357Abstract: A transmission device (10) includes: a series/parallel converter (11); an MSK modulator (31) for modulating a signal on a channel basis; a D/A converter (13); a frequency converter (14a) for conversion into different carrier frequencies; a synchronization circuit (32); an amplifier (15); a multiplexer (16) for multiplexing amplification signals; and an antenna (19).Type: ApplicationFiled: March 4, 2008Publication date: March 4, 2010Applicants: MITSUBISHI ELECTRIC CORPORATION, TOHOKU UNIVERSITYInventors: Akinori Fujimura, Yasushi Sogabe, Fumio Ishizu, Tadashi Takagi, Hiroyuki Nakase, Kazuo Tsubouchi, Suguru Kameda, Shoichi Oshima
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Publication number: 20100045138Abstract: A piezoelectric thin-film acoustic wave device formed of a piezoelectric thin film of AlN on the +C plane and having the polarization strength of not lower than 0.63×10?20 FN and an information processing unit using the same are disclosed. This is the result of the inventors having studied the factors other than the C-axis orientation affecting the electromechanical coupling factor and developing a method of improving the electromechanical coupling factor in view of the occasional fact that the electromechanical coupling factor cannot be improved by improving the C-axis orientation and the electromechanical coupling factor required for the piezoelectric thin-film acoustic wave device is not obtained. In such a case, the receiving sensitivity of the receiving system may be deteriorated and the transmission strength of the transmission system is required to be increased undesirably having an adverse effect on the power saving efforts.Type: ApplicationFiled: October 29, 2009Publication date: February 25, 2010Inventors: Takashi SHIBA, Kazuo Tsubouchi, Kensei Uehara, Hiroyuki Nakase, Suguru Kameda, Yoji Isota, Yasuo Cho
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Publication number: 20080155209Abstract: An information processing apparatus is configured to be backed up by a battery so that information in a main memory of the apparatus can be retained when a power supply for the apparatus is stopped. The apparatus stores kernel information in a kernel information table at a time of an initial program loading so that the kernel information stored in the kernel information table can be delivered to a kernel for restarting a program. The program can be started by receiving the kernel information from the kernel information table without retrieving the program from a memory medium or re-generating the kernel information. The apparatus with an operating system that has a relocation function for use in a vehicle can thus have a reduced system startup time.Type: ApplicationFiled: December 18, 2007Publication date: June 26, 2008Applicant: DENSO CORPORATIONInventor: Kazuo Tsubouchi
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Patent number: 7233585Abstract: A cellular wireless communication network system having a plurality of base stations (1) and a plurality of mobile stations (#i) (i is an integer from 1 to N) is provided in which communication with wireless circuit is established between the respective base stations (1), and a flexibility of arrangement for the base station location is improved to realize a construction of the communication network with inexpensive cost.Type: GrantFiled: October 11, 2001Date of Patent: June 19, 2007Assignee: Clarion Co., Ltd.Inventors: Kazuo Tsubouchi, Hiroyuki Nakase, Suguru Kameda
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Publication number: 20070024157Abstract: A piezoelectric thin-film acoustic wave device formed of a piezoelectric thin film of AlN on the +C plane and having the polarization strength of not lower than 0.63×10?20 F/V and an information processing unit using the same are disclosed. This is the result of the inventors having studied the factors other than the C-axis orientation affecting the electromechanical coupling factor and developing a method of improving the electromechanical coupling factor in view of the occasional fact that the electromechanical coupling factor cannot be improved by improving the C-axis orientation and the electromechanical coupling factor required for the piezoelectric thin-film acoustic wave device is not obtained. In such a case, the receiving sensitivity of the receiving system may be deteriorated and the transmission strength of the transmission system is required to be increased undesirably having an adverse effect on the power saving efforts.Type: ApplicationFiled: May 30, 2006Publication date: February 1, 2007Inventors: Takashi Shiba, Kazuo Tsubouchi, Kensei Uehara, Hiroyuki Nakase, Suguru Kameda, Yoji Isota, Yasuo Cho
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Patent number: 6865174Abstract: In a code division multiple communication system which prevents the dropout of a whole packet and does not require the generation of a carrier from a received signal, under bad communication path, by generating an orthogonal code with chip synchronization from a correlation peak of a synchronization code sequence output from a surface acoustic wave matched filter, a preamble division of a spectrum spread signal is composed of plural synchronization burst. Each synchronization burst is composed of a synchronization packet division having the Barker code of 11 chips and a dummy division. The period of one synchronization burst (Tburst) is set equally to the period of one symbol in a data division (Tsymbol) which is modulated by the orthogonal sequential code of 64 chips. When the correlation peak of at least one from among plural synchronization code sequences is detected, the orthogonal code can be generated in accordance with the start timing of the first symbol in the data division.Type: GrantFiled: December 9, 1999Date of Patent: March 8, 2005Inventors: Kazuo Tsubouchi, Kazuya Masu, Tomohiko Shibata
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Patent number: 6495461Abstract: A semiconductor device comprising a substrate, a conductor and an insulating film provided on the surface of the substrate, part of the surface of the substrate being electrically connected with the conductor through a contact hole made in the insulating film, wherein a barrier layer present between part of the surface of the substrate and the conductor is provided only on the bottom of the contact hole, and the barrier layer provided on the bottom comprises amorphous titanium silicon nitride. This can provide a structure that has a barrier layer with a low contact resistance, enables formation of a conductor film of good quality on the barrier layer, and can attain a good electrical conduction even at fine contact holes.Type: GrantFiled: September 19, 2001Date of Patent: December 17, 2002Assignee: Canon Kabushiki KaishaInventors: Kazuo Tsubouchi, Kazuya Masu, Hideki Matsuhashi
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Publication number: 20020159413Abstract: A cellular wireless communication network system having a plurality of base stations (1) and a plurality of mobile stations (#i) (i is an integer from 1 to N) is provided in which communication with wireless circuit is established between the respective base stations (1), and a flexibility of arrangement for the base station location is improved to realize a construction of the communication network with inexpensive cost.Type: ApplicationFiled: October 11, 2001Publication date: October 31, 2002Applicant: Clarion Co., Ltd.Inventors: Kazuo Tsubouchi, Hiroyuki Nakase, Suguru Kameda
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Publication number: 20020017658Abstract: A semiconductor device comprising a substrate, a conductor and an insulating film provided on the surface of the substrate, part of the surface of the substrate being electrically connected with the conductor through a contact hole made in the insulating film, wherein a barrier layer present between part of the surface of the substrate and the conductor is provided only on the bottom of the contact hole, and the barrier layer provided on the bottom comprises amorphous titanium silicon nitride.Type: ApplicationFiled: September 19, 2001Publication date: February 14, 2002Inventors: Kazuo Tsubouchi, Kazuya Masu, Hideki Matsuhashi
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Patent number: 6333925Abstract: A code division multiplex communications system has a receiver for receiving a radio wave and transforming the radio wave to an electric signal. A voltage-current converter converts the electric signal to a current signal. A current delay mechanism then sequentially reads the electric signal during a clock pulse. Adders and subtractors manipulated output currents of the current delay mechanism in accordance with a spread code and a reproducing mechanism reproducing a transmission signal depending on the output of the adder and subtractor.Type: GrantFiled: February 17, 1998Date of Patent: December 25, 2001Assignee: Clarion Co., Ltd.Inventors: Kazuo Tsubouchi, Kazuya Masu, Yasuhito Fujita
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Publication number: 20010045660Abstract: A semiconductor device comprising a substrate, a conductor and an insulating film provided on the surface of the substrate, part of the surface of the substrate being electrically connected with the conductor through a contact hole made in the insulating film, wherein a barrier layer present between part of the surface of the substrate and the conductor is provided only on the bottom of the contact hole, and the barrier layer provided on the bottom comprises amorphous titanium silicon nitride.Type: ApplicationFiled: September 9, 1998Publication date: November 29, 2001Inventors: KAZUO TSUBOUCHI, KAZUYA MASU, HIDEKI MATSUHASHI
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Patent number: 6229409Abstract: An output side electrode of a surface acoustic wave matched filter with portions having different delay times between taps. The output side electrode may be provided by arranging parallelly a plurality of output side electrodes having different scales, different tap distances, or by forming output side electrodes in an inclined fashion or in a dog-leg shape viewed in a direction of an aperture length, or by arranging, between electrode fingers, thin films having different dimensions or thicknesses viewed in the direction of the aperture length, or by forming, between electrode fingers, recessed portions having different dimension or depth viewed in the direction of the aperture length.Type: GrantFiled: March 18, 1999Date of Patent: May 8, 2001Inventors: Kazuo Tsubouchi, Michio Yokoyama, Shuichi Tomabechi, Takumi Suetsugu, Yuichiro Imanishi, Tomohiko Shibata
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Patent number: 6222300Abstract: A spectrum diffusion signal including data representing a center frequency of an acoustic surface filter in a transmitter side is transmitted with its carrier-frequency being swept. When a receiver side receives a modulation signal, a spectrum diffusion signal including data representing a center frequency of an acoustic surface filter in a receiver side is transmitted on the carrier-frequency equal to the center frequency of the surface acoustic wave matched filter in the transmitter side included in the modulation signal. Thereafter, the transmitter side transmits spectrum diffusion signals having the carrier-frequency equal to the center frequency of the surface acoustic wave matched filter in the receiver side included in the modulation signal.Type: GrantFiled: November 5, 1999Date of Patent: April 24, 2001Assignee: Kazuo TsubouchiInventors: Kazuo Tsubouchi, Hiroaki Sasaki, Kazuyoshi Sugai, Kazuma Soeta, Tomohiko Shibata
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Patent number: 6201800Abstract: A code division multiplex communications system comprising: receiving circuit for receiving a radio wave and transforming the radio wave to an electric signal; delaying circuit for sequentially reading the electric signal at a timing of a clock pulse; switching circuit for shutting off a drive current of the delaying circuit at an OFF timing of the clock pulse; adding and subtracting circuit for adding and subtracting outputs of the delaying circuit in accordance with a spread code; and reproducing circuit for reproducing a transmission signal on the basis of an output of the adding and subtracting circuit. RCS95-120 is similar with respect to a point that an analog LSI matched filter is constructed by a slide capacitor system.Type: GrantFiled: February 17, 1998Date of Patent: March 13, 2001Assignee: Clarion Co., Ltd.Inventors: Kazuo Tsubouchi, Kazuya Masu, Yasuhito Fujita
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Patent number: 6061342Abstract: A code division multiple access apparatus which is capable of high-speed synchronization, is simple in construction and, moreover, achieves reduced consumption of electric power during standby. When a specific pattern contained in a signal received by a receiving antenna is detected by a SAW matched filter, a correlation peak is output from the filter. A bit synchronization signal generating circuit detects the correlation peak thereof and generates a synchronization signal after a set time has elapsed from the detection of the correlation peak. An orthogonal PN code generator generates a predetermined orthogonal PN code in accordance with the synchronization signal. Further, a carrier generator generates a carrier in response to the output of the SAW matched filter. This generated carrier is modulated by the output of the orthogonal PN code generator.Type: GrantFiled: March 20, 1997Date of Patent: May 9, 2000Assignee: Kazuo TsubouchiInventors: Kazuo Tsubouchi, Jun Hozumi, Toshiyuki Azuma
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Patent number: 6018641Abstract: A radio IC card system includes an IC card and a toll collector. When an automobile with the IC card passes by a tollgate, the toll collector installed in the tollgate transmits a first radio signal which is spread modulated using a pseudorandom noise (PN) code from an antenna. The first radio signal is received by the antenna of the IC card and is transmitted to a surface acoustic wave (SAW) correlator. The SAW correlator extracts a PN code included in the received signal, and outputs a peak signal. An accumulation circuit accumulates the peak signal. A threshold discharger is activated to switch on a relay switch when the output voltage of the accumulation circuit exceeds a constant value. Thereby, the voltage of a battery is supplied to a data communication unit. Then, the identification code of the IC card and a record of tollgates by which the automobile has passed are transmitted via radio signal to the toll collector.Type: GrantFiled: April 10, 1997Date of Patent: January 25, 2000Assignee: Kazuo TsubouchiInventors: Kazuo Tsubouchi, Jun Hozumi, Toshiyuki Azuma