Patents by Inventor Yunjae SUH
Yunjae SUH 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: 20240155252Abstract: Disclosed is an electronic device which includes a dynamic vision sensor that includes a first pixel sensing a change in light intensity and generates an event signal based on the sensed change in light intensity, an illuminance estimator that estimates illuminance of a light, and a time delay compensator that calculates a time delay between a first time at which the change in light intensity occurs and a second time at which the first pixel senses the change in light intensity, based on the illuminance of the light, and to compensate for the time delay.Type: ApplicationFiled: January 19, 2024Publication date: May 9, 2024Applicant: Samsung Electronics Co., Ltd.Inventors: Minwon SEO, Jeongseok KIM, Hyunsurk RYU, Yunjae SUH, Chang-Woo SHIN, Woonhee LEE
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Patent number: 11950003Abstract: Provided are a vision sensor, an image processing device including the vision sensor, and an operating method of the vision sensor. The vision sensor includes a plurality of pixels arranged in a matrix form, wherein each of the plurality of pixels includes: a sensing circuit configured to output an output voltage by sensing a change of light; a comparison circuit configured to output a comparison signal indicating whether an event has occurred by comparing the output voltage to an event threshold; and an event detection circuit configured to generate internal event signals by sampling the comparison signal at each of a plurality of sampling time points, and configured to output a valid event signal based on the internal event signals.Type: GrantFiled: May 31, 2022Date of Patent: April 2, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Yunjae Suh, Jongwoo Bong, Seungnam Choi, Junseok Kim
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Patent number: 11917315Abstract: An image sensor includes a CIS (CMOS image sensor) pixel, a DVS (dynamic vision sensor) pixel, and an image signal processor. The CIS pixel includes a photoelectric conversion device generating charges corresponding to an incident light and a readout circuit generating an output voltage corresponding to the generated charges. The DVS pixel detects a change in an intensity of the incident light based on the generated charges to output an event signal and does not include a separate photoelectric conversion device. The image signal processor allows the photoelectric conversion device to be connected to the readout circuit or the DVS pixel.Type: GrantFiled: January 23, 2023Date of Patent: February 27, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae Suh, Junseok Kim, Hyunsurk Ryu, Keun Joo Park, Masamichi Ito
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Patent number: 11902673Abstract: Disclosed is an electronic device which includes a dynamic vision sensor that includes a first pixel sensing a change in light intensity and generates an event signal based on the sensed change in light intensity, an illuminance estimator that estimates illuminance of a light, and a time delay compensator that calculates a time delay between a first time at which the change in light intensity occurs and a second time at which the first pixel senses the change in light intensity, based on the illuminance of the light, and to compensate for the time delay.Type: GrantFiled: April 13, 2022Date of Patent: February 13, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Minwon Seo, Jeongseok Kim, Hyunsurk Ryu, Yunjae Suh, Chang-Woo Shin, Woonhee Lee
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Publication number: 20230308056Abstract: An amplifier includes a first capacitor connected between an input node and a floating node, a second capacitor connected between the floating node and an output node, an amplifying element connected between a power supply voltage and the output node and operating in response to a voltage level of the floating node, a current bias source connected between the output node and a ground voltage, a first reset switch connected between the floating node and an intermediate node and operating in response to a reset bias, a second reset switch connected between the intermediate node and the output node and operating in response to the reset bias, and a reset bias generator circuit that outputs the reset bias in response to a reset signal. The reset bias is one of a reset voltage of the intermediate node, the power supply voltage, and the ground voltage.Type: ApplicationFiled: March 27, 2023Publication date: September 28, 2023Inventors: SEUNGNAM CHOI, YUNJAE SUH, MASAMICHI ITO, JUNSEOK KIM
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Patent number: 11765486Abstract: A vision sensor including a plurality of pixels configured to sense intensity of incident light, and to output request signals representing an occurrence status of an event; and an event detection circuit configured to generate event data including information about a pixel at which the event occurs, based on the request signals, wherein each pixel of the plurality of pixels includes: a photoelectric conversion device configured to generate a current corresponding to the incident light; a current-to-voltage converter configured to generate a voltage corresponding to the current; an amplifier configured to amplify a variation amount of the generated voltage to generate an output voltage; an event storage configured to generate an event signal corresponding to a comparison between the output voltage and a threshold voltage, and to hold the event signal using cross-coupled transistors; and an output logic configured to output a request signal based on the event signal.Type: GrantFiled: October 5, 2021Date of Patent: September 19, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seungnam Choi, Jongwoo Bong, Junseok Kim, Yunjae Suh
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Publication number: 20230247321Abstract: An image sensor includes a CIS (CMOS image sensor) pixel, a DVS (dynamic vision sensor) pixel, and an image signal processor. The CIS pixel includes a photoelectric conversion device generating charges corresponding to an incident light and a readout circuit generating an output voltage corresponding to the generated charges. The DVS pixel detects a change in an intensity of the incident light based on the generated charges to output an event signal and does not include a separate photoelectric conversion device. The image signal processor allows the photoelectric conversion device to be connected to the readout circuit or the DVS pixel.Type: ApplicationFiled: April 7, 2023Publication date: August 3, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae SUH, Junseok KIM, Hyunsurk RYU, Keun Joo PARK, Masamichi ITO
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Patent number: 11637983Abstract: An image sensor includes a CIS (CMOS image sensor) pixel, a DVS (dynamic vision sensor) pixel, and an image signal processor. The CIS pixel includes a photoelectric conversion device generating charges corresponding to an incident light and a readout circuit generating an output voltage corresponding to the generated charges. The DVS pixel detects a change in an intensity of the incident light based on the generated charges to output an event signal and does not include a separate photoelectric conversion device. The image signal processor allows the photoelectric conversion device to be connected to the readout circuit or the DVS pixel.Type: GrantFiled: October 1, 2021Date of Patent: April 25, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae Suh, Junseok Kim, Hyunsurk Ryu, Keun Joo Park, Masamichi Ito
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Patent number: 11621675Abstract: An amplifier includes a first capacitor connected between an input node and a floating node, a second capacitor connected between the floating node and an output node, an amplifying element connected between a power supply voltage and the output node and operating in response to a voltage level of the floating node, a current bias source connected between the output node and a ground voltage, a first reset switch connected between the floating node and an intermediate node and operating in response to a reset bias, a second reset switch connected between the intermediate node and the output node and operating in response to the reset bias, and a reset bias generator circuit that outputs the reset bias in response to a reset signal. The reset bias is one of a reset voltage of the intermediate node, the power supply voltage, and the ground voltage.Type: GrantFiled: September 7, 2021Date of Patent: April 4, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seungnam Choi, Yunjae Suh, Masamichi Ito, Junseok Kim
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Publication number: 20230030562Abstract: Disclosed is an electronic device which includes a dynamic vision sensor that includes a first pixel sensing a change in light intensity and generates an event signal based on the sensed change in light intensity, an illuminance estimator that estimates illuminance of a light, and a time delay compensator that calculates a time delay between a first time at which the change in light intensity occurs and a second time at which the first pixel senses the change in light intensity, based on the illuminance of the light, and to compensate for the time delay.Type: ApplicationFiled: April 13, 2022Publication date: February 2, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Minwon SEO, Jeongseok KIM, Hyunsurk RYU, Yunjae SUH, Chang-Woo SHIN, Woonhee LEE
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Publication number: 20220394195Abstract: Provided are a vision sensor, an image processing device including the vision sensor, and an operating method of the vision sensor. The vision sensor includes a plurality of pixels arranged in a matrix form, wherein each of the plurality of pixels includes: a sensing circuit configured to output an output voltage by sensing a change of light; a comparison circuit configured to output a comparison signal indicating whether an event has occurred by comparing the output voltage to an event threshold; and an event detection circuit configured to generate internal event signals by sampling the comparison signal at each of a plurality of sampling time points, and configured to output a valid event signal based on the internal event signals.Type: ApplicationFiled: May 31, 2022Publication date: December 8, 2022Applicant: Samsung Electronics Co., Ltd.Inventors: Yunjae SUH, Jongwoo BONG, Seungnam CHOI, Junseok KIM
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Publication number: 20220373389Abstract: A vision sensor and an operating method of the vision sensor are provided. The vision sensor includes a pixel array including a plurality of pixels arranged in a form of a matrix; and a bias voltage generation circuit configured to provide a test bias voltage to the pixel array, wherein each of the plurality of pixels includes a sensing circuit configured to sense light and generate a first output voltage, wherein the first output voltage changes as the test bias voltage changes within a specific frame.Type: ApplicationFiled: April 26, 2022Publication date: November 24, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seol NAMGUNG, Jeongseok KIM, Yunjae SUH, Junseok KIM, Jongwoo BONG, Seungnam CHOI
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Publication number: 20220239859Abstract: A vision sensor including a plurality of pixels configured to sense intensity of incident light, and to output request signals representing an occurrence status of an event; and an event detection circuit configured to generate event data including information about a pixel at which the event occurs, based on the request signals, wherein each pixel of the plurality of pixels includes: a photoelectric conversion device configured to generate a current corresponding to the incident light; a current-to-voltage converter configured to generate a voltage corresponding to the current; an amplifier configured to amplify a variation amount of the generated voltage to generate an output voltage; an event storage configured to generate an event signal corresponding to a comparison between the output voltage and a threshold voltage, and to hold the event signal using cross-coupled transistors; and an output logic configured to output a request signal based on the event signal.Type: ApplicationFiled: October 5, 2021Publication date: July 28, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seungnam CHOI, Jongwoo BONG, Junseok KIM, Yunjae SUH
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Patent number: 11388361Abstract: An imaging device, image sensor and method are provided. A first scanning operation is performed on a pixel array in a first direction by a first selection circuit to generate first frame data by first readout circuit. A second scanning operation is performed on the pixel array in a second direction different from the first direction to generate second frame data by a second selection circuit. The first and second frame data are merged into single frame data by an image signal processor.Type: GrantFiled: August 13, 2020Date of Patent: July 12, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seol Namgung, Seungnam Choi, Jeongseok Kim, Junseok Kim, Jongwoo Bong, Yunjae Suh
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Publication number: 20220021835Abstract: An image sensor includes a CIS (CMOS image sensor) pixel, a DVS (dynamic vision sensor) pixel, and an image signal processor. The CIS pixel includes a photoelectric conversion device generating charges corresponding to an incident light and a readout circuit generating an output voltage corresponding to the generated charges. The DVS pixel detects a change in an intensity of the incident light based on the generated charges to output an event signal and does not include a separate photoelectric conversion device. The image signal processor allows the photoelectric conversion device to be connected to the readout circuit or the DVS pixel.Type: ApplicationFiled: October 1, 2021Publication date: January 20, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae SUH, Junseok KIM, Hyunsurk RYU, Keun Joo PARK, Masamichi ITO
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Publication number: 20210399689Abstract: An amplifier includes a first capacitor connected between an input node and a floating node, a second capacitor connected between the floating node and an output node, an amplifying element connected between a power supply voltage and the output node and operating in response to a voltage level of the floating node, a current bias source connected between the output node and a ground voltage, a first reset switch connected between the floating node and an intermediate node and operating in response to a reset bias, a second reset switch connected between the intermediate node and the output node and operating in response to the reset bias, and a reset bias generator circuit that outputs the reset bias in response to a reset signal. The reset bias is one of a reset voltage of the intermediate node, the power supply voltage, and the ground voltage.Type: ApplicationFiled: September 7, 2021Publication date: December 23, 2021Inventors: Seungnam Choi, Yunjae Suh, Masamichi Ito, Junseok Kim
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Patent number: 11153517Abstract: A dynamic vision sensor device includes a photo detector that outputs a detection signal based on light incident from outside, a log amplifier that receives the detection signal from the photo detector through a first node, amplifies the received detection signal, and outputs the amplified detection signal to a second node, a differencing amplifier that outputs a difference signal based on a change in an intensity of the amplified detection signal, and an event determination circuit that determines an event based on the difference signal. The log amplifier includes a first buffer connected between the first node and a third node, an amplifier connected between the third node and the second node, and a feedback circuit connected between the second node and the first node.Type: GrantFiled: August 31, 2020Date of Patent: October 19, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Jeongseok Kim, Junseok Kim, Yunjae Suh, Seol Namgung, Jongwoo Bong, Seungnam Choi
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Patent number: 11140349Abstract: An image sensor includes a CIS (CMOS image sensor) pixel, a DVS (dynamic vision sensor) pixel, and an image signal processor. The CIS pixel includes a photoelectric conversion device generating charges corresponding to an incident light and a readout circuit generating an output voltage corresponding to the generated charges. The DVS pixel detects a change in an intensity of the incident light based on the generated charges to output an event signal and does not include a separate photoelectric conversion device. The image signal processor allows the photoelectric conversion device to be connected to the readout circuit or the DVS pixel.Type: GrantFiled: August 27, 2019Date of Patent: October 5, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae Suh, Junseok Kim, Hyunsurk Ryu, Keun Joo Park, Masamichi Ito
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Patent number: 11125614Abstract: A sensor configured for sensing motion information, illumination information, and proximity information is provided. The sensor includes a light sensing module configured to sense a change in an intensity of light, a filtering module configured to filter light incident to the light sensing module by using a plurality of filters, and a processor configured to process information associated with an intensity of light passing through the filters.Type: GrantFiled: May 28, 2019Date of Patent: September 21, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Ho Kim, Junseok Kim, Jun Haeng Lee, Eric Hyunsurk Ryu, Yunjae Suh
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Patent number: RE49355Abstract: A circuit configured to amplify a signal from which an offset is cancelled includes an amplifier including an input stage configured to receive an input signal, the amplifier configured to amplify the input signal and output the amplified signal, and a switch including a transistor configured to reset the amplifier in response to a reset signal, the transistor including a body node connecting the transistor to the circuit, the transistor being configured to form a current path between the body node of the transistor and the input stage of the amplifier.Type: GrantFiled: August 7, 2019Date of Patent: January 3, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae Suh, Sung Ho Kim, Junseok Kim, Eric Hyunsurk Ryu