Patents by Inventor Kiyotaka Amano
Kiyotaka Amano 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: 10547318Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: GrantFiled: December 18, 2017Date of Patent: January 28, 2020Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20180123608Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: ApplicationFiled: December 18, 2017Publication date: May 3, 2018Inventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 9882574Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: GrantFiled: December 21, 2015Date of Patent: January 30, 2018Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20160218731Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: ApplicationFiled: December 21, 2015Publication date: July 28, 2016Inventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 9264057Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: GrantFiled: January 17, 2014Date of Patent: February 16, 2016Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20150014516Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: ApplicationFiled: January 17, 2014Publication date: January 15, 2015Applicant: Sony CorporationInventors: Go ASAYAMA, Noriyuki FUKUSHIMA, Yoshikazu NITTA, Yoshinori MURAMATSU, Kiyotaka AMANO
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Patent number: 8674865Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: GrantFiled: May 23, 2011Date of Patent: March 18, 2014Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 8339300Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: GrantFiled: April 29, 2011Date of Patent: December 25, 2012Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20110221619Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: ApplicationFiled: May 23, 2011Publication date: September 15, 2011Applicant: SONY CORPORATIONInventors: Go ASAYAMA, Noriyuki FUKUSHIMA, Yoshikazu NITTA, Yoshinori MURAMATSU, Kiyotaka AMANO
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Publication number: 20110205097Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: ApplicationFiled: April 29, 2011Publication date: August 25, 2011Applicant: SONY CORPORATIONInventors: Go ASAYAMA, Noriyuki FUKUSHIMA, Yoshikazu NITTA, Yoshinori MURAMATSU, Kiyotaka AMANO
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Patent number: 7948415Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: GrantFiled: September 9, 2008Date of Patent: May 24, 2011Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 7936294Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: GrantFiled: April 20, 2009Date of Patent: May 3, 2011Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 7750836Abstract: A solid-state imaging device including: an analog-digital converter unit in column parallel arrangement, the analog-digital converter unit having a plurality of pixels arranged to convert an incident light quantity to an electric signal, in which an analog signal obtained from the pixel is converted into a digital signal, wherein the analog-digital converter unit is configured of: a comparator operable to compare a value of a column signal line from which an analog signal obtained by the pixel is outputted with a value of a reference line, and a counter operable to measure a time period by the time when comparison done by the comparator is finished and to store the comparison result, wherein the solid-state imaging device further includes: a module for controlling an output of the comparator operable to control the output of the comparator depending on the output of the comparator.Type: GrantFiled: March 5, 2007Date of Patent: July 6, 2010Assignee: Sony CorporationInventors: Yoshinori Muramatsu, Kiyotaka Amano, Atsushi Suzuki, Noriyuki Fukushima
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Publication number: 20090201187Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: ApplicationFiled: April 20, 2009Publication date: August 13, 2009Applicant: Sony CorporationInventors: Go ASAYAMA, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 7522082Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: GrantFiled: October 12, 2007Date of Patent: April 21, 2009Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20090009641Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: ApplicationFiled: September 9, 2008Publication date: January 8, 2009Applicant: Sony CorporationInventors: GO ASAYAMA, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20080252767Abstract: A solid-state imaging device including: an analog-digital converter unit in column parallel arrangement, the analog-digital converter unit having a plurality of pixels arranged to convert an incident light quantity to an electric signal, in which an analog signal obtained from the pixel is converted into a digital signal, wherein the analog-digital converter unit is configured of: a comparator operable to compare a value of a column signal line from which an analog signal obtained by the pixel is outputted with a value of a reference line, and a counter operable to measure a time period by the time when comparison done by the comparator is finished and to store the comparison result, wherein the solid-state imaging device further includes: a module for controlling an output of the comparator operable to control the output of the comparator depending on the output of the comparator.Type: ApplicationFiled: March 5, 2007Publication date: October 16, 2008Inventors: Yoshinori Muramatsu, Kiyotaka Amano, Atsushi Suzuki, Noriyuki Fukushima
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Patent number: 7423570Abstract: A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain control input signal value. In the DA converter, the gain control of the analog output signal generated by the first DA conversion section is performed on the basis of the gain control output signal generated by the second DA conversion section.Type: GrantFiled: August 18, 2006Date of Patent: September 9, 2008Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Publication number: 20080042048Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: ApplicationFiled: October 12, 2007Publication date: February 21, 2008Inventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano
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Patent number: 7324033Abstract: A DA conversion device includes the following elements. A higher-bit current source cell portion includes uniformly weighted higher-bit current source cells to generate an identical constant current. A lower-bit current source cell portion includes a lower-bit current source cells that are weighted to generate 1/two-to-the-power-of-certain-numbers constant currents. A constant current source selection controller includes a lower-bit controller having a scaler that uses clocks scaled down to 1/two-to-the-power-of-certain-numbers to select the lower-bit current source cells, and a higher-bit controller having shift registers and using a signal indicating a carry bit or a borrow bit used in the lower-bit controller to sequentially activate shift outputs of the shift registers, and uses the shift outputs to select the higher-bit current source cells. Constant current outputs of the selected current source cells are added and output so that an output current corresponding to the digital input signal is obtained.Type: GrantFiled: September 25, 2006Date of Patent: January 29, 2008Assignee: Sony CorporationInventors: Go Asayama, Noriyuki Fukushima, Yoshikazu Nitta, Yoshinori Muramatsu, Kiyotaka Amano