Patents by Inventor Hirotaka Osawa
Hirotaka Osawa 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).
-
Publication number: 20240120693Abstract: A connector with a floating mechanism includes a socket movable shell configured to cover an outside of a socket movable housing and to move together with the socket movable housing, and a conductive shell connecting unit configured to constantly provide connection between the socket movable shell and a socket fixing shell, the shell connecting unit being interposed between the socket movable shell and the socket fixing shell.Type: ApplicationFiled: June 1, 2023Publication date: April 11, 2024Inventors: Hirotaka TSUCHIYA, Yoji OCHI, Fumio OSAWA
-
Patent number: 10943522Abstract: A display device comprises a display panel and a display driver. The display panel comprises a plurality of gate lines. The display driver is configured to control, based on a first image data, an order in which the plurality of gate lines are driven.Type: GrantFiled: October 31, 2019Date of Patent: March 9, 2021Assignee: Synaptics IncorporatedInventors: Takahide Iwase, Hirotaka Osawa
-
Patent number: 7504903Abstract: In a communication semiconductor integrated circuit device, an oscillator of a PLL circuit can operate in a plurality of frequency bands. With a control voltage (Vc) of the oscillator fixed to a predetermined value (VDC), an oscillation frequency of the oscillator is measured for each band to be stored in a storage. When the PLL operates, a setting value to specify a band is compared with the measured frequency values stored in the storage. As a result of the comparison, a band to be actually used by the oscillator is determined.Type: GrantFiled: November 6, 2006Date of Patent: March 17, 2009Assignees: Renesas Technology Corp., TTPCom LimitedInventors: Masumi Kasahara, Hirotaka Osawa, Robert Astle Henshaw
-
Patent number: 7499688Abstract: In a communication semiconductor integrated circuit device using offset PLL architectures and including an oscillator circuit and a frequency divider circuit generating an intermediate frequency signal, the oscillator circuit includes an oscillator, a programmable frequency divider which frequency-divides the oscillation signal in accordance with frequency division information, a phase comparator detecting a phase difference between an output signal of the programmable frequency divider and a reference signal, and a frequency control unit for outputting a signal indicative of the phase difference and controlling the oscillation frequency of the oscillator, wherein a frequency division ratio generator circuit generates an integer part I and a fraction part F/G based on band information concerning the use frequency band and mode information along with channel information and for producing the frequency division ratio information to thereby give it to the programmable frequency divider.Type: GrantFiled: March 26, 2007Date of Patent: March 3, 2009Assignees: Renesas Technology Corp., TTPOM LimitedInventors: Toshiya Uozumi, Yasuyuki Kimura, Hirotaka Osawa, Satoru Yamamoto, Robert Astel Henshaw
-
Patent number: 7499689Abstract: In a communication semiconductor integrated circuit device using offset PLL architectures and including an oscillator circuit and a frequency divider circuit generating an intermediate frequency signal, the oscillator circuit includes an oscillator, a programmable frequency divider which frequency-divides the oscillation signal in accordance with frequency division information, a phase comparator detecting a phase difference between an output signal of the programmable frequency divider and a reference signal, and a frequency control unit for outputting a signal indicative of the phase difference and controlling the oscillation frequency of the oscillator, wherein a frequency division ratio generator circuit generates an integer part I and a fraction part F/G based on band information concerning the use frequency band and mode information along with channel information and for producing the frequency division ratio information to thereby give it to the programmable frequency divider.Type: GrantFiled: March 26, 2007Date of Patent: March 3, 2009Assignees: Renesas Technology Corp., TTPCOM LimitedInventors: Toshiya Uozumi, Yasuyuki Kimura, Hirotaka Osawa, Satoru Yamamoto, Robert Astel Henshaw
-
Publication number: 20080278245Abstract: An RF IC in which a PLL circuit including a loop filter is incorporated into a semiconductor chip is achieved without increasing power consumption or chip size. The RF IC includes a VCO capable of switching oscillation frequency bands, a variable frequency divider, a phase comparator, and a loop filter, which are contained in the PLL loop. A discrimination circuit discriminates a lead or lag in a phase of an output signal from the variable frequency divider against a reference signal and an automatic band selecting circuit generates a signal for switching the frequency bands of the VCO based on output from the discrimination circuit. While switching the frequency bands of the VCO by means of bisection algorithm, the RF IC detects an optimum frequency band, and adds offset to it to determine a final usable frequency band.Type: ApplicationFiled: July 10, 2008Publication date: November 13, 2008Inventors: Toshiya Uozumi, Hirotaka Osawa, Jiro Shinbo, Satoru Yamamoto
-
Patent number: 7423493Abstract: An RF IC in which a PLL circuit including a loop filter is incorporated into a semiconductor chip is achieved without increasing power consumption or chip size. The RF IC includes a VCO capable of switching oscillation frequency bands, a variable frequency divider, a phase comparator, and a loop filter, which are contained in the PLL loop. A discrimination circuit discriminates a lead or lag in a phase of an output signal from the variable frequency divider against a reference signal and an automatic band selecting circuit generates a signal for switching the frequency bands of the VCO based on output from the discrimination circuit. While switching the frequency bands of the VCO by means of bisection algorithm, the RF IC detects an optimum frequency band, and adds offset to it to determine a final usable frequency band.Type: GrantFiled: August 10, 2006Date of Patent: September 9, 2008Assignee: Renesas Technology CorporationInventors: Toshiya Uozumi, Hirotaka Osawa, Jiro Shinbo, Satoru Yamamoto
-
Publication number: 20070164828Abstract: In a communication semiconductor integrated circuit device using offset PLL architectures and including an oscillator circuit and a frequency divider circuit generating an intermediate frequency signal, the oscillator circuit includes an oscillator, a programmable frequency divider which frequency-divides the oscillation signal in accordance with frequency division information, a phase comparator detecting a phase difference between an output signal of the programmable frequency divider and a reference signal, and a frequency control unit for outputting a signal indicative of the phase difference and controlling the oscillation frequency of the oscillator, wherein a frequency division ratio generator circuit generates an integer part I and a fraction part F/G based on band information concerning the use frequency band and mode information along with channel information and for producing the frequency division ratio information to thereby give it to the programmable frequency divider.Type: ApplicationFiled: March 26, 2007Publication date: July 19, 2007Inventors: Toshiya Uozumi, Yasuyuki Kimura, Hirotaka Osawa, Satoru Yamamoto, Robert Henshaw
-
Publication number: 20070161360Abstract: In a communication semiconductor integrated circuit device using offset PLL architectures and including an oscillator circuit and a frequency divider circuit generating an intermediate frequency signal, the oscillator circuit includes an oscillator, a programmable frequency divider which frequency-divides the oscillation signal in accordance with frequency division information, a phase comparator detecting a phase difference between an output signal of the programmable frequency divider and a reference signal, and a frequency control unit for outputting a signal indicative of the phase difference and controlling the oscillation frequency of the oscillator, wherein a frequency division ratio generator circuit generates an integer part I and a fraction part F/G based on band information concerning the use frequency band and mode information along with channel information and for producing the frequency division ratio information to thereby give it to the programmable frequency divider.Type: ApplicationFiled: March 26, 2007Publication date: July 12, 2007Inventors: Toshiya Uozumi, Yasuyuki Kimura, Hirotaka Osawa, Satoru Yamamoto, Robert Henshaw
-
Patent number: 7205850Abstract: In a communication semiconductor integrated circuit device using offset PLL architectures and including an oscillator circuit and a frequency divider circuit generating an intermediate frequency signal, the oscillator circuit includes an oscillator, a programmable frequency divider which frequency-divides the oscillation signal in accordance with frequency division information, a phase comparator detecting a phase difference between an output signal of the programmable frequency divider and a reference signal, and a frequency control unit for outputting a signal indicative of the phase difference and controlling the oscillation frequency of the oscillator, wherein a frequency division ratio generator circuit generates an integer part I and a fraction part F/G based on band information concerning the use frequency band and mode information along with channel information and for producing the frequency division ratio information to thereby give it to the programmable frequency divider.Type: GrantFiled: July 15, 2005Date of Patent: April 17, 2007Assignees: Renesas Technology Corp., TTPCom LimitedInventors: Toshiya Uozumi, Yasuyuki Kimura, Hirotaka Osawa, Satoru Yamamoto, Robert Astel Henshaw
-
Publication number: 20070052488Abstract: In a communication semiconductor integrated circuit device, an oscillator (VCO 10) of a PLL circuit can operate in a plurality of frequency bands. With a control voltage (Vc) of the oscillator fixed to a predetermined value (VDC), an oscillation frequency of the oscillator is measured for each band to be stored in a storage (18). When the PLL operates, a setting value to specify a band is compared with the measured frequency values stored in the storage. As a result of the comparison, a band to be actually used by the oscillator is determined.Type: ApplicationFiled: November 6, 2006Publication date: March 8, 2007Inventors: Masumi Kasahara, Hirotaka Osawa, Robert Henshaw
-
Patent number: 7148764Abstract: In a communication semiconductor integrated circuit device, an oscillator (VCO 10) of a PLL circuit can operate in a plurality of frequency bands. With a control voltage (Vc) of the oscillator fixed to a predetermined value (VDC), an oscillation frequency of the oscillator is measured for each band to be stored in a storage (18). When the PLL operates, a setting value to specify a band is compared with the measured frequency values stored in the storage. As a result of the comparison, a band to be actually used by the oscillator is determined.Type: GrantFiled: November 13, 2002Date of Patent: December 12, 2006Assignees: Renesas Technology Corp., TTPCom LimitedInventors: Masumi Kasahara, Hirotaka Osawa, Robert Astle Henshaw
-
Publication number: 20060267699Abstract: An RF IC in which a PLL circuit including a loop filter is incorporated into a semiconductor chip is achieved without increasing power consumption or chip size. The RF IC includes a VCO capable of switching oscillation frequency bands, a variable frequency divider, a phase comparator, and a loop filter, which are contained in the PLL loop. A discrimination circuit discriminates a lead or lag in a phase of an output signal from the variable frequency divider against a reference signal and an automatic band selecting circuit generates a signal for switching the frequency bands of the VCO based on output from the discrimination circuit. While switching the frequency bands of the VCO by means of bisection algorithm, the RF IC detects an optimum frequency band, and adds offset to it to determine a final usable frequency band.Type: ApplicationFiled: August 10, 2006Publication date: November 30, 2006Inventors: Toshiya Uozumi, Hirotaka Osawa, Jiro Shinbo, Satoru Yamamoto
-
Patent number: 7123102Abstract: An RF IC in which a PLL circuit including a loop filter is incorporated into a semiconductor chip is achieved without increasing power consumption or chip size. The RF IC includes a VCO capable of switching oscillation frequency bands, a variable frequency divider, a phase comparator, and a loop filter, which are contained in the PLL loop. A discrimination circuit discriminates a lead or lag in a phase of an output signal from the variable frequency divider against a reference signal and an automatic band selecting circuit generates a signal for switching the frequency bands of the VCO based on output from the discrimination circuit. While switching the frequency bands of the VCO by means of bisection algorithm, the RF IC detects an optimum frequency band, and adds offset to it to determine a final usable frequency band.Type: GrantFiled: September 22, 2004Date of Patent: October 17, 2006Assignee: Renesas Technology CorporationInventors: Toshiya Uozumi, Hirotaka Osawa, Jiro Shinbo, Satoru Yamamoto
-
Publication number: 20060014513Abstract: In a communication semiconductor integrated circuit device using offset PLL architectures and including an oscillator circuit and a frequency divider circuit generating an intermediate frequency signal, the oscillator circuit includes an oscillator, a programmable frequency divider which frequency-divides the oscillation signal in accordance with frequency division information, a phase comparator detecting a phase difference between an output signal of the programmable frequency divider and a reference signal, and a frequency control unit for outputting a signal indicative of the phase difference and controlling the oscillation frequency of the oscillator, wherein a frequency division ratio generator circuit generates an integer part I and a fraction part F/G based on band information concerning the use frequency band and mode information along with channel information and for producing the frequency division ratio information to thereby give it to the programmable frequency divider.Type: ApplicationFiled: July 15, 2005Publication date: January 19, 2006Inventors: Toshiya Uozumi, Yasuyuki Kimura, Hirotaka Osawa, Satoru Yamamoto, Robert Henshaw
-
Publication number: 20050068119Abstract: An RF IC in which a PLL circuit including a loop filter is incorporated into a semiconductor chip is achieved without increasing power consumption or chip size. The RF IC includes a VCO capable of switching oscillation frequency bands, a variable frequency divider, a phase comparator, and a loop filter, which are contained in the PLL loop. A discrimination circuit discriminates a lead or lag in a phase of an output signal from the variable frequency divider against a reference signal and an automatic band selecting circuit generates a signal for switching the frequency bands of the VCO based on output from the discrimination circuit. While switching the frequency bands of the VCO by means of bisection algorithm, the RF IC detects an optimum frequency band, and adds offset to it to determine a final usable frequency band.Type: ApplicationFiled: September 22, 2004Publication date: March 31, 2005Inventors: Toshiya Uozumi, Hirotaka Osawa, Jiro Shinbo, Satoru Yamamoto
-
Publication number: 20050068111Abstract: In a communication semiconductor integrated circuit device, an oscillator (VCO 10) of a PLL circuit can operate in a plurality of frequency bands. With a control voltage (Vc) of the oscillator fixed to a predetermined value (VDC), an oscillation frequency of the oscillator is measured for each band to be stored in a storage (18). When the PLL operates, a setting value to specify a band is compared with the measured frequency values stored in the storage. As a result of the comparison, a band to be actually used by the oscillator is determined.Type: ApplicationFiled: November 13, 2002Publication date: March 31, 2005Inventors: Masumi Kasahara, Hirotaka Osawa, Robert Henshaw