Patents by Inventor Akira Okasaka
Akira Okasaka 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: 20130027582Abstract: An electronic camera includes a recorder. A recorder records an image outputted from an imager in response to a recording operation. An assigner assigns an imaging direction at a time of accepting the recording operation to the image recorded by the recorder. An extractor executes a process for extracting one portion of images having a common imaging position from among a plurality of the images recorded by the recorder in response to a reproducing operation. An acceptor accepts a direction-designating operation in association with the extracting process of the extractor. A reproducer reproduces an image, to which an imaging direction equivalent to a direction designated by the direction-designating operation is assigned, among one the portion of images extracted by the extractor.Type: ApplicationFiled: July 24, 2012Publication date: January 31, 2013Applicant: SANYO ELECTRIC CO., LTD.Inventor: Akira Okasaka
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Patent number: 7570289Abstract: An electronic camera includes a CCD imager. A first specific evaluation area is assigned to one end in a horizontal direction of an effective area formed on an imaging surface, and a second specific evaluation area is assigned to the other end in a horizontal direction of the effective area. Also, a first clamp area is assigned in an optical black area in vicinity of the first specific evaluation area, and a second clamp area is assigned in an optical black area in vicinity of the second specific evaluation area. A luminance evaluation circuit obtains a first luminance evaluation value with respect to the first specific evaluation area and obtains a second luminance evaluation value with respect to the second specific evaluation area. In addition, a clamp circuit performs a clamping process on a raw image signal taking note of the first clamp area or the second clamp area.Type: GrantFiled: February 3, 2005Date of Patent: August 4, 2009Assignee: Sanyo Electric Co., Ltd.Inventor: Akira Okasaka
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Patent number: 7532814Abstract: A digital camera (10) includes a CCD imager (16). An image signal corresponding to an optical image is output from the CCD imager (16), and an incident light amount to the CCD imager (16) is restricted by an aperture unit (14). A CPU (40) adjusts an exposure time period of the CCD imager (16) on the basis of an average luminance value of a normal evaluation area assigned to the center of a screen out of the image signals output form the CCD imager (16). The CPU (40) also adjusts an aperture amount of the aperture unit (14) on the basis of an average luminance value of a specific evaluation area assigned to the end of the screen out of the image signals output form the CCD imager (16).Type: GrantFiled: December 20, 2004Date of Patent: May 12, 2009Assignee: Sanyo Electric Co., Ltd.Inventor: Akira Okasaka
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Patent number: 7450921Abstract: The invention provides a communication semiconductor integrated circuit (RF IC) that, when a transmission oscillator is incorporated into a semiconductor chip, secures the oscillation operation over a wide frequency range, prevents a deterioration of a transmission spectrum, and thereby enhances the accuracy of an oscillation frequency. The integrated circuit corrects a dispersion of the KV characteristic of the transmission oscillator by calibrating a current Icp of the charge pump inside the phase control loop. More in concrete, the integrated circuit measures a KV value Kv of the transmission oscillator, and calibrates the current Icp of the charge pump so that Kv·Icp falls into a predetermined value.Type: GrantFiled: January 11, 2007Date of Patent: November 11, 2008Assignee: Renesas Technology Corp.Inventors: Satoshi Arayashiki, Hirotaka Oosawa, Noriyuki Kurakami, Akira Okasaka, Yasuyuki Kimura, Toshiya Uozumi, Hirokazu Miyagawa, Satoshi Tanaka
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Publication number: 20070165132Abstract: A digital camera (10) includes a CCD imager (16). An image signal corresponding to an optical image is output from the CCD imager (16), and an incident light amount to the CCD imager (16) is restricted by an aperture unit (14). A CPU (40) adjusts an exposure time period of the CCD imager (16) on the basis of an average luminance value of a normal evaluation area assigned to the center of a screen out of the image signals output form the CCD imager (16). The CPU (40) also adjusts an aperture amount of the aperture unit (14) on the basis of an average luminance value of a specific evaluation area assigned to the end of the screen out of the image signals output form the CCD imager (16).Type: ApplicationFiled: December 20, 2004Publication date: July 19, 2007Applicant: SANYO ELECTRIC CO., LTD.Inventor: Akira Okasaka
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Publication number: 20070111675Abstract: The invention provides a communication semiconductor integrated circuit (RF IC) that, when a transmission oscillator is incorporated into a semiconductor chip, secures the oscillation operation over a wide frequency range, prevents a deterioration of a transmission spectrum, and thereby enhances the accuracy of an oscillation frequency. The integrated circuit corrects a dispersion of the KV characteristic of the transmission oscillator by calibrating a current Icp of the charge pump inside the phase control loop. More in concrete, the integrated circuit measures a KV value Kv of the transmission oscillator, and calibrates the current Icp of the charge pump so that Kv·Icp falls into a predetermined value.Type: ApplicationFiled: January 11, 2007Publication date: May 17, 2007Inventors: Satoshi Arayashiki, Hirotaka Oosawa, Noriyuki Kurakami, Akira Okasaka, Yasuyuki Kimura, Toshiya Uozumi, Hirokazu Miyagawa, Satoshi Tanaka
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Patent number: 7187911Abstract: The invention provides a communication semiconductor integrated circuit (RF IC) that, when a transmission oscillator is incorporated into a semiconductor chip, secures the oscillation operation over a wide frequency range, prevents a deterioration of a transmission spectrum, and thereby enhances the accuracy of an oscillation frequency. The integrated circuit corrects a dispersion of the KV characteristic of the transmission oscillator by calibrating a current Icp of the charge pump inside the phase control loop. More in concrete, the integrated circuit measures a KV value Kv of the transmission oscillator, and calibrates the current Icp of the charge pump so that Kv·Icp falls into a predetermined value.Type: GrantFiled: June 8, 2004Date of Patent: March 6, 2007Assignee: Renesas Technology Corp.Inventors: Satoshi Arayashiki, Hirotaka Oosawa, Noriyuki Kurakami, Akira Okasaka, Yasuyuki Kimura, Toshiya Uozumi, Hirokazu Miyagawa, Satoshi Tanaka
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Publication number: 20050206756Abstract: An electronic camera includes a CCD imager. A first specific evaluation area is assigned to one end in a horizontal direction of an effective area formed on an imaging surface, and a second specific evaluation area is assigned to the other end in a horizontal direction of the effective area. Also, a first clamp area is assigned in an optical black area in vicinity of the first specific evaluation area, and a second clamp area is assigned in an optical black area in vicinity of the second specific evaluation area. A luminance evaluation circuit obtains a first luminance evaluation value with respect to the first specific evaluation area and obtains a second luminance evaluation value with respect to the second specific evaluation area. In addition, a clamp circuit performs a clamping process on a raw image signal taking note of the first clamp area or the second clamp area.Type: ApplicationFiled: February 3, 2005Publication date: September 22, 2005Inventor: Akira Okasaka
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Publication number: 20050107056Abstract: A communication semiconductor integrated circuit device (200) includes an amplifier circuit (330) including a plurality of variable-gain amplifiers (PGA1-PGA3) for amplifying a received signal and a plurality of filter circuits (LPF1-LPF3), the amplifiers and the filter circuits being connected to each other in a multi-stage configuration, and a last amplifier (FFGA) having a gain set regardless of a level of a received signal and a filter circuit, the last amplifier and the filter circuit are disposed at the last stage of the amplifier circuit. The amplifier circuit has an amplification factor variable according to a level of a received signal. The communication semiconductor integrated circuit device further includes a plurality of offset correction circuits (OFC1-OFC4) for correcting direct-current offset, corresponding to the variable-gain amplifiers and the last amplifiers, respectively.Type: ApplicationFiled: November 13, 2002Publication date: May 19, 2005Inventors: Akira Okasaka, Koichi Yahagi, Masakazu Sakagami, Robert Henshaw
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Publication number: 20050059372Abstract: The invention provides a communication semiconductor integrated circuit (RF IC) that, when a transmission oscillator is incorporated into a semiconductor chip, secures the oscillation operation over a wide frequency range, prevents a deterioration of a transmission spectrum, and thereby enhances the accuracy of an oscillation frequency. The integrated circuit corrects a dispersion of the KV characteristic of the transmission oscillator by calibrating a current Icp of the charge pump inside the phase control loop. More in concrete, the integrated circuit measures a KV value Kv of the transmission oscillator, and calibrates the current Icp of the charge pump so that Kv·Icp falls into a predetermined value.Type: ApplicationFiled: June 8, 2004Publication date: March 17, 2005Inventors: Satoshi Arayashiki, Hirotaka Oosawa, Noriyuki Kurakami, Akira Okasaka, Yasuyuki Kimura, Toshiya Uozumi, Hirokazu Miyagawa, Satoshi Tanaka
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Publication number: 20040266385Abstract: Receiving properties are greatly improved by varying and outputting an output voltage of I/Q signals, which correspond to an input level in a semiconductor integrated circuit device for baseband processing. When a portable terminals system reaches a training period after power is supplied thereto, a switch is turned on and another switch is turned off and a digital comparator compares an adjustment voltage outputted from an output-voltage adjustment circuit and a reference voltage of a baseband circuit to output comparison results thereof. A control circuit controls and adjusts, based on the comparison results, a voltage-controlled unit so that an adjustment voltage may become nearly equivalent to the reference voltage of the baseband circuit. Thereby the output level of the I signals (, Q signals) outputted from the RF processing unit is corrected, and the output levels of the I signals (, Q signals) are set to be equivalent to that of the reference voltage of the baseband circuit.Type: ApplicationFiled: August 6, 2003Publication date: December 30, 2004Inventors: Takeshi Uchitomi, Akira Okasaka, Robert Astle Henshaw
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Patent number: 5872605Abstract: A video signal processing apparatus includes an equalizer for delaying an input color signal by an adjustable phase retardation. A low pass filter is operative for delaying the input color signal by an adjustable phase retardation. A phase detector is operative for detecting a difference between a phase of an output signal of the equalizer and a phase of an output signal of the low pass filter, and outputting a signal representative of the detected phase difference. The phase retardation provided by the equalizer and the phase retardation provided by the low pass filter are adjusted in response to the output signal of the phase detector to maintain the difference between the phase of the output signal of the equalizer and the phase of the output signal of the low pass filter at a predetermined value, for example, 90 degrees.Type: GrantFiled: May 28, 1997Date of Patent: February 16, 1999Assignee: Victor Company of Japan, Ltd.Inventors: Tomoyuki Nonaka, Akifumi Tabata, Hiroyuki Hori, Akira Okasaka, Masahiro Sasaki, Kazuki Ito