Patents by Inventor Takaaki Tsushima
Takaaki Tsushima 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: 8917160Abstract: An RFID module including an antenna element forming an RFID antenna; an RFID circuit block to which the antenna element is connected; and a first resonance frequency adjustment circuit having an element that includes a drain terminal connected to the antenna element, a gate terminal that is grounded, and a source terminal that is grounded, wherein a pull-up resistor is connected between the drain terminal and a power supply.Type: GrantFiled: September 23, 2011Date of Patent: December 23, 2014Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Takaaki Tsushima, Toshiyuki Takahashi, Toshihiko Takeda, Zenkichi Mihara
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Patent number: 8605816Abstract: A non-contact wireless communication apparatus that includes: an antenna section configured to receive a carrier wave; an envelope-curve shaping section configured to shape a falling waveform of an envelope curve of the carrier wave into a gradual falling waveform; and a demodulation section configured to extract the envelope curve shaped by the envelope-curve shaping section and perform envelope-curve detection by binarizing the envelope curve with a predetermined threshold value.Type: GrantFiled: March 4, 2011Date of Patent: December 10, 2013Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventor: Takaaki Tsushima
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Patent number: 8567685Abstract: There is provided a short-range wireless communication apparatus and a cellular phone terminal that can surely and immediately notify a user of the optimum distance between a contactless IC card reader/writer and a contactless IC card not through an MPU or a CPU and if the contactless IC card function is locked, surely notify the user as such. In an RFID card, a magnetic field strength/brightness conversion section adjusts the brightness of two LEDs in accordance with the detected magnetic field strength of a carrier wave. A blink generation circuit detects whether the RFID card is in a communication state and blinks the LEDs if so. A function combining section combines the functions to indicate the magnetic field strength and the communication state with the brightness and blinking of the LEDs. An LED with another color illuminates only when an RFID function LSI is in a lock state.Type: GrantFiled: May 21, 2010Date of Patent: October 29, 2013Assignees: Sony Corporation, Sony Mobile Communications, Inc.Inventors: Takashi Sueoka, Takaaki Tsushima, Masayuki Chiba
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Patent number: 8406686Abstract: A mobile communication terminal apparatus includes a non-contact communication section configured to perform non-contact communication with an external terminal apparatus. The non-contact communication section includes a main unit having a controller configured to control communication with the external terminal apparatus and a main antenna, and a sub-unit having a sub-antenna having a coil whose number of windings is smaller than the number of windings of a coil of the main antenna and an adjuster configured to adjust a resonance frequency.Type: GrantFiled: May 14, 2007Date of Patent: March 26, 2013Assignee: Sony Mobile Communications Japan, Inc.Inventors: Takaaki Tsushima, Hideaki Hatakeyama
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Publication number: 20120242456Abstract: An RFID module including an antenna element forming an RFID antenna; an RFID circuit block to which the antenna element is connected; and a first resonance frequency adjustment circuit having an element that includes a drain terminal connected to the antenna element, a gate terminal that is grounded, and a source terminal that is grounded, wherein a pull-up resistor is connected between the drain terminal and a power supply.Type: ApplicationFiled: September 23, 2011Publication date: September 27, 2012Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.Inventors: Takaaki TSUSHIMA, Toshiyuki Takahashi, Toshihiko Takeda, Zenkichi Mihara
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Publication number: 20110293039Abstract: A non-contact wireless communication apparatus that includes: an antenna section configured to receive a carrier wave; an envelope-curve shaping section configured to shape a falling waveform of an envelope curve of the carrier wave into a gradual falling waveform; and a demodulation section configured to extract the envelope curve shaped by the envelope-curve shaping section and perform envelope-curve detection by binarizing the envelope curve with a predetermined threshold value.Type: ApplicationFiled: March 4, 2011Publication date: December 1, 2011Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.Inventor: Takaaki TSUSHIMA
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Publication number: 20100227558Abstract: There is provided a short-range wireless communication apparatus and a cellular phone terminal that can surely and immediately notify a user of the optimum distance between a contactless IC card reader/writer and a contactless IC card not through an MPU or a CPU and if the contactless IC card function is locked, surely notify the user as such. In an RFID card, a magnetic field strength/brightness conversion section adjusts the brightness of two LEDs in accordance with the detected magnetic field strength of a carrier wave. A blink generation circuit detects whether the RFID card is in a communication state and blinks the LEDs if so. A function combining section combines the functions to indicate the magnetic field strength and the communication state with the brightness and blinking of the LEDs. An LED with another color illuminates only when an RFID function LSI is in a lock state.Type: ApplicationFiled: May 21, 2010Publication date: September 9, 2010Applicants: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC., Sony CorporationInventors: Takashi SUEOKA, Takaaki Tsushima, Masayuki Chiba
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Patent number: 7762469Abstract: There is provided a short-range wireless communication apparatus and a cellular phone terminal that can surely and immediately notify a user of the optimum distance between a contactless IC card reader/writer and a contactless IC card not through an MPU or a CPU and if the contactless IC card function is locked, surely notify the user as such. In an RFID card, a magnetic field strength/brightness conversion section adjusts the brightness of two LEDs in accordance with the detected magnetic field strength of a carrier wave. A blink generation circuit detects whether the RFID card is in a communication state and blinks the LEDs if so. A function combining section combines the functions to indicate the magnetic field strength and the communication state with the brightness and blinking of the LEDs. An LED with another color illuminates only when an RFID function LSI is in a lock state.Type: GrantFiled: December 28, 2005Date of Patent: July 27, 2010Assignees: Sony Ericsson Mobile Communications Japan, Inc., Sony CorporationInventors: Takashi Sueoka, Takaaki Tsushima, Masayuki Chiba
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Patent number: 7688270Abstract: An NFC antenna (“NFC” stands for “near field communication”) includes a ferrite antenna including a primary antenna coil wound on a ferrite core of the ferrite antenna; a loop coil provided in a position where components of a magnetic flux on a non-communication direction side interlink, the magnetic flux being generated by the ferrite antenna; and a loop coil switching unit for switching between a mode for forming a loop of the loop coil and a mode for disconnecting the loop.Type: GrantFiled: February 25, 2008Date of Patent: March 30, 2010Assignee: Sony Ericsson Mobile Communications Japan, Inc.Inventor: Takaaki Tsushima
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Publication number: 20080238799Abstract: An NFC antenna (“NFC” stands for “near field communication”) includes a ferrite antenna including a primary antenna coil wound on a ferrite core of the ferrite antenna; a loop coil provided in a position where components of a magnetic flux on a non-communication direction side interlink, the magnetic flux being generated by the ferrite antenna; and a loop coil switching unit for switching between a mode for forming a loop of the loop coil and a mode for disconnecting the loop.Type: ApplicationFiled: February 25, 2008Publication date: October 2, 2008Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.Inventor: Takaaki TSUSHIMA
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Publication number: 20070285255Abstract: A mobile communication terminal apparatus includes a non-contact communication section configured to perform non-contact communication with an external terminal apparatus. The non-contact communication section includes a main unit having a controller configured to control communication with the external terminal apparatus and a main antenna, and a sub-unit having a sub-antenna having a coil whose number of windings is smaller than the number of windings of a coil of the main antenna and an adjuster configured to adjust a resonance frequency.Type: ApplicationFiled: May 14, 2007Publication date: December 13, 2007Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.Inventors: Takaaki TSUSHIMA, Hideaki Hatakeyama
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Publication number: 20060160488Abstract: There is provided a short-range wireless communication apparatus and a cellular phone terminal that can surely and immediately notify a user of the optimum distance between a contactless IC card reader/writer and a contactless IC card not through an MPU or a CPU and if the contactless IC card function is locked, surely notify the user as such. In an RFID card, a magnetic field strength/brightness conversion section adjusts the brightness of two LEDs in accordance with the detected magnetic field strength of a carrier wave. A blink generation circuit detects whether the RFID card is in a communication state and blinks the LEDs if so. A function combining section combines the functions to indicate the magnetic field strength and the communication state with the brightness and blinking of the LEDs. An LED with another color illuminates only when an RFID function LSI is in a lock state.Type: ApplicationFiled: December 28, 2005Publication date: July 20, 2006Applicants: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC., Sony CorporationInventors: Takashi Sueoka, Takaaki Tsushima, Masayuki Chiba