Patents by Inventor Ming-Tsan Kao
Ming-Tsan Kao 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: 20200183500Abstract: An input system includes a first gesture detection unit and a second gesture detection unit. The first gesture detection unit includes a first light emitting device for emitting a first light beam, a first light sensing device for receiving the first light beam reflected by a first motion trajectory generated by a user and outputting a first image signal, and a first processing unit for processing the first image signal and outputting a first command signal. The second gesture detection unit includes a second light emitting device for emitting a second light beam, a second light sensing device for receiving the second light beam reflected by a second motion trajectory generated by the user and outputting a second image signal, and a second processing unit for processing the second image signal and outputting a second command signal.Type: ApplicationFiled: February 14, 2020Publication date: June 11, 2020Inventors: Yu-Hao Huang, Yi-Fang Lee, Ming-Tsan Kao
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Patent number: 10631789Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.Type: GrantFiled: September 4, 2018Date of Patent: April 28, 2020Assignee: PIXART IMAGING INC.Inventors: Chih-Yuan Chuang, Cheng-Nan Tsai, Ming-Tsan Kao, Ren-Hau Gu, Yen-Min Chang
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Publication number: 20200103979Abstract: The present invention discloses a method for outputting a command by detecting a movement of an object, which includes the following steps. First, an image capturing device captures images generated by the movement of the object at different timings by. Next, a motion trajectory is calculated according to the plurality of images. Further next, a corresponding command is outputted according to the motion trajectory. The present invention also provides a system which employs the above-mentioned method.Type: ApplicationFiled: December 3, 2019Publication date: April 2, 2020Inventors: Yu-Hao Huang, Yi-Fang Lee, Ming-Tsan Kao, Nien-Tse Chen
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Patent number: 10606366Abstract: An input system includes a first gesture detection unit and a second gesture detection unit. The first gesture detection unit includes a first light emitting device for emitting a first light beam, a first light sensing device for receiving the first light beam reflected by a first motion trajectory generated by a user and outputting a first image signal, and a first processing unit for processing the first image signal and outputting a first command signal. The second gesture detection unit includes a second light emitting device for emitting a second light beam, a second light sensing device for receiving the second light beam reflected by a second motion trajectory generated by the user and outputting a second image signal, and a second processing unit for processing the second image signal and outputting a second command signal.Type: GrantFiled: June 22, 2019Date of Patent: March 31, 2020Assignee: PIXART IMAGING INCORPORATIONInventors: Yu-Hao Huang, Yi-Fang Lee, Ming-Tsan Kao
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Patent number: 10599224Abstract: The present invention discloses a method for outputting a command by detecting a movement of an object, which includes the following steps. First, an image capturing device captures images generated by the movement of the object at different timings by. Next, a motion trajectory is calculated according to the plurality of images. Further next, a corresponding command is outputted according to the motion trajectory. The present invention also provides a system which employs the above-mentioned method.Type: GrantFiled: May 18, 2015Date of Patent: March 24, 2020Assignee: Richtek Technology CorporationInventors: Yu-Hao Huang, Yi-Fang Lee, Ming-Tsan Kao, Nien-Tse Chen
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Publication number: 20200065579Abstract: There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.Type: ApplicationFiled: November 4, 2019Publication date: February 27, 2020Inventors: YU-HAO HUANG, MING-TSAN KAO, YI-FANG LEE, EN-FENG HSU, MENG-HUAN HSIEH, NIEN-TSE CHEN
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Publication number: 20200064931Abstract: There is provided an optical navigation device including an image sensor, a processing unit, a storage unit and an output unit. The image sensor is configured to successively capture images. The processing unit is configured to calculate a current displacement according to the images and to compare the current displacement or an accumulated displacement with a threshold so as to determine an outputted displacement. The storage unit is configured to save the accumulated displacement. The output unit is configured to output the outputted displacement with a report rate.Type: ApplicationFiled: October 31, 2019Publication date: February 27, 2020Inventors: YU-HAO HUANG, MING-TSAN KAO, SEN-HUANG HUANG
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Patent number: 10503973Abstract: There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.Type: GrantFiled: December 7, 2018Date of Patent: December 10, 2019Assignee: PIXART IMAGING INC.Inventors: Yu-Hao Huang, Ming-Tsan Kao, Yi-Fang Lee, En-Feng Hsu, Meng-Huan Hsieh, Nien-Tse Chen
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Patent number: 10496184Abstract: There is provided an optical navigation device including an image sensor, a processing unit, a storage unit and an output unit. The image sensor is configured to successively capture images. The processing unit is configured to calculate a current displacement according to the images and to compare the current displacement or an accumulated displacement with a threshold so as to determine an outputted displacement. The storage unit is configured to save the accumulated displacement. The output unit is configured to output the outputted displacement with a report rate.Type: GrantFiled: July 27, 2018Date of Patent: December 3, 2019Assignee: PIXART IMAGING INC.Inventors: Yu-Hao Huang, Ming-Tsan Kao, Sen-Huang Huang
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Publication number: 20190310717Abstract: An input system includes a first gesture detection unit and a second gesture detection unit. The first gesture detection unit includes a first light emitting device for emitting a first light beam, a first light sensing device for receiving the first light beam reflected by a first motion trajectory generated by a user and outputting a first image signal, and a first processing unit for processing the first image signal and outputting a first command signal. The second gesture detection unit includes a second light emitting device for emitting a second light beam, a second light sensing device for receiving the second light beam reflected by a second motion trajectory generated by the user and outputting a second image signal, and a second processing unit for processing the second image signal and outputting a second command signal.Type: ApplicationFiled: June 22, 2019Publication date: October 10, 2019Inventors: Yu-Hao Huang, Yi-Fang Lee, Ming-Tsan Kao
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Patent number: 10379677Abstract: An operation method of an optical touch device includes: emitting, by a light emitting unit, a light beam to illuminate an object; capturing, by an image sensing device, an image of the object reflecting the light beam; selecting all pixels in the image having a brightness greater than or equal to a brightness threshold; sorting the selected pixels along a first coordinate axis of the image, a second coordinate axis of the image or based a pixel brightness; selecting the top first predetermined ratio of pixels from the sorted pixels as an object image of the object; and calculating a gravity center of the object image according to positions of the top first predetermined ratio of pixels or according to the positions of the top first predetermined ratio of pixels with a weight of pixel brightness. An optical touch device is also provided.Type: GrantFiled: January 24, 2018Date of Patent: August 13, 2019Assignee: PixArt Imaging Inc.Inventors: Yu-Hao Huang, Ming-Tsan Kao, En-Feng Hsu, Yi-Yuan Chen, Meng-Huan Hsieh
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Patent number: 10372224Abstract: An input system includes a first gesture detection unit and a second gesture detection unit. The first gesture detection unit includes a first light emitting device for emitting a first light beam, a first light sensing device for receiving the first light beam reflected by a first motion trajectory generated by a user and outputting a first image signal, and a first processing unit for processing the first image signal and outputting a first command signal. The second gesture detection unit includes a second light emitting device for emitting a second light beam, a second light sensing device for receiving the second light beam reflected by a second motion trajectory generated by the user and outputting a second image signal, and a second processing unit for processing the second image signal and outputting a second command signal.Type: GrantFiled: May 31, 2016Date of Patent: August 6, 2019Assignee: PIXART IMAGING INCORPORATION, R.O.C.Inventors: Yu-Hao Huang, Yi-Fang Lee, Ming-Tsan Kao
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Publication number: 20190187289Abstract: Disclosed are a distance measuring method and a distance measuring apparatus. During the distance measuring, an image is obtained. If the location of a center of gravity of the image is within a first segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point, according to a first mapping relationship and the location of a center of gravity of the image. If the location of a center of gravity of the image is within a second segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point according to a second mapping relationship and the location of a center of gravity of the image.Type: ApplicationFiled: February 21, 2019Publication date: June 20, 2019Inventors: GUO-ZHEN WANG, MING-TSAN KAO
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Publication number: 20190156111Abstract: A user recognition and confirmation device includes an image sensing unit, a face recognition unit, a display unit and an expression recognition unit. The image sensing unit captures a first image frame and a second image frame. The face recognition unit is configured to recognize a user ID according to the first image frame. The display unit is configured to show ID information of the user ID. The expression recognition unit is configured to confirm a user expression according to the second image frame and output a confirm signal. There is further provided a user recognition and confirmation method and a central control system for vehicles.Type: ApplicationFiled: January 21, 2019Publication date: May 23, 2019Inventors: LIANG-CHI CHIU, YU-HAN CHEN, MING-TSAN KAO
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Patent number: 10267917Abstract: Disclosed are a distance measuring method and a distance measuring apparatus. During the distance measuring, an image is obtained. If the location of a center of gravity of the image is within a first segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point, according to a first mapping relationship and the location of a center of gravity of the image. If the location of a center of gravity of the image is within a second segment, the calculating unit calculates a distance between the object and the distance measuring apparatus corresponding to the projection point according to a second mapping relationship and the location of a center of gravity of the image.Type: GrantFiled: April 16, 2018Date of Patent: April 23, 2019Assignee: PIXART IMAGING INC.Inventors: Guo-Zhen Wang, Ming-Tsan Kao
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Publication number: 20190108395Abstract: There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.Type: ApplicationFiled: December 7, 2018Publication date: April 11, 2019Inventors: YU-HAO HUANG, MING-TSAN KAO, YI-FANG LEE, EN-FENG HSU, MENG-HUAN HSIEH, NIEN-TSE CHEN
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Patent number: 10198631Abstract: There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.Type: GrantFiled: August 31, 2016Date of Patent: February 5, 2019Assignee: PIXART IMAGING INC.Inventors: Yu-Hao Huang, Ming-Tsan Kao, Yi-Fang Lee, En-Feng Hsu, Meng-Huan Hsieh, Nien-Tse Chen
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Publication number: 20190015049Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.Type: ApplicationFiled: September 4, 2018Publication date: January 17, 2019Inventors: Chih-Yuan Chuang, Cheng-Nan Tsai, Ming-Tsan Kao, Ren-Hau Gu, Yen-Min Chang
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Publication number: 20180335854Abstract: There is provided an optical navigation device including an image sensor, a processing unit, a storage unit and an output unit. The image sensor is configured to successively capture images. The processing unit is configured to calculate a current displacement according to the images and to compare the current displacement or an accumulated displacement with a threshold so as to determine an outputted displacement. The storage unit is configured to save the accumulated displacement. The output unit is configured to output the outputted displacement with a report rate.Type: ApplicationFiled: July 27, 2018Publication date: November 22, 2018Inventors: Yu-Hao Huang, Ming-Tsan Kao, Sen-Huang Huang
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Patent number: 10114473Abstract: An interactive system includes a display, a processor and a remote controller. The display includes at least one reference beacon for providing light with a predetermined feature. The remote controller includes an image sensor configured to capture an image containing the reference beacon and calculates an aiming coordinate according to an imaging position of the reference beacon in the captured image. The processor calculates a scale ratio of a pixel size of the display with respect to that of the image captured by the image sensor and moves a cursor position according to the scale ratio and the aiming coordinate.Type: GrantFiled: June 25, 2013Date of Patent: October 30, 2018Assignee: PIXART IMAGING INCInventors: Chi-Yang Huang, Chia-Cheun Liang, Chao-Chien Huang, Han-Ping Cheng, Ming-Tsan Kao