Patents by Inventor Yoshifumi Miyajima
Yoshifumi Miyajima 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: 11956580Abstract: A microphone assembly comprises a circuit board, a microphone element connected to the circuit board, an external connection interface connected to the circuit board, and hot melt that is formed to cover the circuit board, the microphone element, and the external connection interface and has a hole formed to expose a part of the back side of the circuit board or the sound receiving part of the microphone element.Type: GrantFiled: March 28, 2022Date of Patent: April 9, 2024Assignee: HOSIDEN CORPORATIONInventors: Shunji Muraoka, Shushin Noda, Yoshifumi Yamanaka, Kouta Onoyama, Daisuke Kitaguchi, Jun Miyajima
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Patent number: 11218150Abstract: An electronic circuit that includes a plurality of first drivers coupled in parallel, the first drivers each including transistors coupled in series and transmitting data at a predetermined communication speed, and a second driver that includes transistors coupled in series and transmitting data at a communication speed lower than the communication speed of the first driver. The number of first drivers operating in parallel is sufficient for output impedance of the first drivers to meet a predetermined standard through application of an electrical potential to bodies of the transistors of the first drivers. The electrical potential causes an output level of the second driver to meet a predetermined standard.Type: GrantFiled: September 19, 2018Date of Patent: January 4, 2022Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventors: Yuki Seo, Yoshifumi Miyajima, Zhiwei Zhou
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Publication number: 20200358442Abstract: [Problem] Provided is an electronic circuit that is able to avoid the influence on the output level of the driver for low-speed communication due to a decrease in the voltage of the driver for high-speed communication in an interface for interconnection of devices in the electronic apparatus. [Solution] An electronic circuit includes a plurality of first drivers coupled in parallel, the first drivers each including transistors coupled in series and transmitting data at a predetermined communication speed; and a second driver including transistors coupled in series and transmitting data at a communication speed lower than the communication speed of the first driver. The number of first drivers operating in parallel is sufficient for output impedance of the first drivers to meet a predetermined standard through application of an electrical potential to bodies of the transistors of the first drivers. The electrical potential causes an output level of the second driver to meet a predetermined standard.Type: ApplicationFiled: September 19, 2018Publication date: November 12, 2020Inventors: YUKI SEO, YOSHIFUMI MIYAJIMA, ZHIWEI ZHOU
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Patent number: 9905151Abstract: A display panel includes a plurality of first unit pixels, each including: a data input terminal, a data output terminal, a display element, and a waveform shaping section. The display element is configured to perform display based on data inputted to the data input terminal. The first waveform shaping section is provided on a signal path from the data input terminal to the data output terminal.Type: GrantFiled: December 20, 2013Date of Patent: February 27, 2018Assignee: SONY CORPORATIONInventors: Hideyuki Suzuki, Toshiyuki Miyauchi, Yosuke Ueno, Yoshifumi Miyajima, Masayuki Hattori, Kazukuni Takanohashi, Haruo Togashi, Tamotsu Ikeda, Hiizu Ootorii, Sachiya Tanaka
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Patent number: 9813162Abstract: A driving element which performs driving according to a level of a voltage signal to be transmitted optically, a modulation current driving circuit configured to supply a modulation current modulated by the driving element to a light source for optical communication configured to convert a current signal into light and to output the light, and a constant current supply circuit configured to supply a constant current to the light source for optical communication are included. Then, when the voltage signal is at a first level, the driving element is turned on and the modulation current driving circuit supplies the modulation current to the light source for optical communication. When the voltage signal is at a second level, the driving element is turned off and the modulation current driving circuit stops supplying the modulation current. The present technique can be applied, for example, to an optical transmission system.Type: GrantFiled: September 11, 2014Date of Patent: November 7, 2017Assignee: Sony CorporationInventors: Koki Uchino, Hideyuki Suzuki, Hiroshi Morita, Yoshifumi Miyajima, Masatsugu Sugano
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Publication number: 20150371591Abstract: A display panel includes a plurality of first unit pixels (Pix) each including: a first data input terminals (PDIN); a first data output terminal (PDOUT); a display element (48); and a first waveform shaping section (42, 22), in which the display element (48) is configured to perform display based on first data (PD) inputted to the first data input terminal (PDIN), and the first waveform shaping section (42, 44) is provided on a signal path from the first data input terminal (PDIN) to the first data output terminal (PDOUT).Type: ApplicationFiled: December 20, 2013Publication date: December 24, 2015Inventors: Hideyuki SUZUKI, Toshiyuki MIYAUCHI, Yosuke UENO, Yoshifumi MIYAJIMA, Masayuki HATTORI, Kazukuni TAKANOHASHI, Haruo TOGASHI, Tamotsu IKEDA, Hiizu OOTORII, Sachiya TANAKA
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Publication number: 20150104190Abstract: A driving element which performs driving according to a level of a voltage signal to be transmitted optically, a modulation current driving circuit configured to supply a modulation current modulated by the driving element to a light source for optical communication configured to convert a current signal into light and to output the light, and a constant current supply circuit configured to supply a constant current to the light source for optical communication are included. Then, when the voltage signal is at a first level, the driving element is turned on and the modulation current driving circuit supplies the modulation current to the light source for optical communication. When the voltage signal is at a second level, the driving element is turned off and the modulation current driving circuit stops supplying the modulation current. The present technique can be applied, for example, to an optical transmission system.Type: ApplicationFiled: September 11, 2014Publication date: April 16, 2015Inventors: Koki Uchino, Hideyuki Suzuki, Hiroshi Morita, Yoshifumi Miyajima, Masatsugu Sugano
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Publication number: 20150061979Abstract: A display unit includes: a display section including a plurality of unit pixels; and a display drive section configured to generate a plurality of clock signals and supply the clock signals to the display section, the clock signals including two or more clock signals with phases different from one another.Type: ApplicationFiled: August 12, 2014Publication date: March 5, 2015Inventors: Hideyuki SUZUKI, Yoshifumi MIYAJIMA, Kazukuni TAKANOHASHI, Kiyohiro SAITO
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Patent number: 8953654Abstract: A semiconductor laser driving circuit supplies a drive current to a semiconductor laser diode connected to an output terminal based on an input signal inputted thereto through an input terminal, thereby controlling the semiconductor laser diode. The semiconductor laser driving circuit includes a first supply portion supplying a bias current, and a first supply signal having a frequency component whose frequency is equal to or lower than a first frequency of the input signal, and a second supply portion supplying a second supply signal having a frequency component whose frequency is higher than a second frequency of the input signal.Type: GrantFiled: October 5, 2012Date of Patent: February 10, 2015Assignee: Sony CorporationInventors: Katsuya Nakashima, Yoshifumi Miyajima
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Patent number: 8660158Abstract: A semiconductor laser drive circuit controlling a semiconductor laser diode connected to an output terminal by providing a drive electric current to the semiconductor laser diode includes: a constant electric current source configured to provide an electric current to the output terminal, the constant electric current source being connected to a first electric power terminal and the output terminal; a current sinking circuit connected to the output terminal and a second electric power terminal; a current sourcing circuit configured to provide a predetermined electric current to the output terminal or the current sinking circuit, the current sourcing circuit being connected to the first electric power terminal and the output terminal; and a terminating resistor having a resistance component equal to that of the semiconductor laser diode, the terminating resistor being connected to the circuit sinking circuit and the current sourcing circuit.Type: GrantFiled: May 14, 2012Date of Patent: February 25, 2014Assignee: Sony CorporationInventors: Yoshifumi Miyajima, Katsuya Nakashima
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Publication number: 20120294324Abstract: A semiconductor laser drive circuit controlling a semiconductor laser diode connected to an output terminal by providing a drive electric current to the semiconductor laser diode includes: a constant electric current source configured to provide an electric current to the output terminal, the constant electric current source being connected to a first electric power terminal and the output terminal; a current sinking circuit connected to the output terminal and a second electric power terminal; a current sourcing circuit configured to provide a predetermined electric current to the output terminal or the current sinking circuit, the current sourcing circuit being connected to the first electric power terminal and the output terminal; and a terminating resistor having a resistance component equal to that of the semiconductor laser diode, the terminating resistor being connected to the circuit sinking circuit and the current sourcing circuit.Type: ApplicationFiled: May 14, 2012Publication date: November 22, 2012Applicant: Sony CorporationInventors: Yoshifumi Miyajima, Katsuya Nakashima
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Patent number: 7312629Abstract: A method and apparatus are provided for a programmable impedance control circuit. In one example of the apparatus, a programmable impedance control circuit of an output driver of an input/output interface is provided. The programmable impedance control circuit includes a pull-up impedance programmed according to a multi-stage emulator and a pull-down impedance programmed according to the multi-stage emulator. The multi-stage emulator includes a first stage for calibrating a pull-up PMOS impedance at a voltage level Voh, a second stage for calibrating a pull-up NMOS impedance at a voltage level Vol, a third stage for calibrating a pull-down NMOS impedance at the voltage level Vol, a fourth stage for re-calibrating the pull-up NMOS impedance at the voltage level Vol, and fifth stage for calibrating a pull-down PMOS impedance at the voltage level Voh.Type: GrantFiled: May 17, 2006Date of Patent: December 25, 2007Assignees: Sony Corporation, Sony Electronics, Inc.Inventors: Mu-Hsiang Huang, Katsuya Nakashima, Yoshifumi Miyajima, Masahiro Ichihashi
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Publication number: 20070268039Abstract: A method and apparatus are provided for a programmable impedance control circuit. In one example of the apparatus, a programmable impedance control circuit of an output driver of an input/output interface is provided. The programmable impedance control circuit includes a pull-up impedance programmed according to a multi-stage emulator and a pull-down impedance programmed according to the multi-stage emulator. The multi-stage emulator includes a first stage for calibrating a pull-up PMOS impedance at a voltage level Voh, a second stage for calibrating a pull-up NMOS impedance at a voltage level Vol, a third stage for calibrating a pull-down NMOS impedance at the voltage level Vol, a fourth stage for re-calibrating the pull-up NMOS impedance at the voltage level Vol, and fifth stage for calibrating a pull-down PMOS impedance at the voltage level Voh.Type: ApplicationFiled: May 17, 2006Publication date: November 22, 2007Inventors: Mu-Hsiang Huang, Katsuya Nakashima, Yoshifumi Miyajima, Masahiro Ichihashi
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Patent number: 6383622Abstract: A formed article of fiber-reinforced thermoplastic resin which has been adapted for use in a sliding member by restoring the wear resistance once degraded by the addition of reinforcing fibers to the normal level is disclosed. This formed article comprises a fiber-reinforced resin material of a thermoplastic resin containing reinforcing fibers and incorporating therein additionally as a sliding property-imparting agent a material having a storage elastic modulus in the range of 3.5×108 Pa to 5.0×108 Pa in a service temperature range of 30° C. to 70° C. The ratio of incorporation of the sliding property-imparting agent is properly in the range of 4 to 10% by weight when the matrix resin is a polyamide-based resin or 4 to 20% by weight when the matrix resin is a thermoplastic resin other than the polyamide-based resin, respectively based on the total weight of the resin and the reinforcing fibers.Type: GrantFiled: June 3, 1999Date of Patent: May 7, 2002Assignee: YKK CorporationInventors: Akira Ishibashi, Mamoru Tanaka, Mutsuo Hirota, Yoshifumi Miyajima
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Publication number: 20020051874Abstract: A formed article of fiber-reinforced thermoplastic resin which has been adapted for use in a sliding member by restoring the wear resistance once degraded by the addition of reinforcing fibers to the normal level is disclosed. This formed article comprises a fiber-reinforced resin material of a thermoplastic resin containing reinforcing fibers and incorporating therein additionally as a sliding property-imparting agent a material having a storage elastic modulus in the range of 3.5×108 Pa to 5.0×108 Pa in a service temperature range of 30° C. to 70° C. The ratio of incorporation of the sliding property-imparting agent is properly in the range of 4 to 10% by weight when the matrix resin is a polyamide-based resin or 4 to 20% by weight when the matrix resin is a thermoplastic resin other than the polyamide-based resin, respectively based on the total weight of the resin and the reinforcing fibers.Type: ApplicationFiled: November 9, 2001Publication date: May 2, 2002Applicant: YKK CorporationInventors: Akira Ishibashi, Mamoru Tanaka, Mutsuo Hirota, Yoshifumi Miyajima
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Publication number: 20010003761Abstract: Disclosed is a formed article made of a biodegradable resin material which maintains strength sufficient for practical use and, when discarded after use, succumbs to decomposition by the action of microorganisms occurring in the physical world without bringing destruction on the physical environment or inducing public nuisance in consequence of the decomposition. The formed article is formed of a multicomponent polymer material comprising a continuous phase and a disperse phase; the continuous phase is made of a polybutylene succinate type and/or polyethylene adipate type aliphatic polyester and the disperse phase is made of polylactic acid. The continuous phase may comprise the aliphatic polyester containing such an inorganic filler as talc or calcium carbonate. The formed article of biodegradable resin constructed as described above may be manufactured in arbitrarily selected shapes and used for products in various fields, particularly for slide fasteners and separable fasteners.Type: ApplicationFiled: December 14, 1998Publication date: June 14, 2001Inventors: AKIRA ISHIBASHI, MAMORU TANAKA, MUTSUO HIROTA, YOSHIFUMI MIYAJIMA