Patents by Inventor Yao-Hsuan Lin
Yao-Hsuan Lin 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: 11947737Abstract: An optical navigation device control method comprising: (a) computing brightness contrast information of original images captured by an image sensor of an optical navigation device; (b) computing brightness variation levels of the original images; (c) improving image qualities of the original images based on the brightness contrast information and the brightness variation levels, to generate adjusted images; and (d) computing movements of the optical navigation device based on displacement between the adjusted images. The optical navigation device is located on a surface. The step (d) comprises: collecting reference images of different parts of the surface for a plurality of combinations of moving directions of the optical navigation device and placement directions of the surface; and determining a type of the surface via comparing images of a current surface with the reference images.Type: GrantFiled: May 4, 2023Date of Patent: April 2, 2024Assignee: PixArt Imaging Inc.Inventors: Bo-Yi Chang, Yao-Hsuan Lin
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Publication number: 20230315218Abstract: An optical navigation device control method comprising: (a) computing brightness contrast information of original images captured by an image sensor of an optical navigation device; (b) computing brightness variation levels of the original images; (c) improving image qualities of the original images based on the brightness contrast information and the brightness variation levels, to generate adjusted images; and (d) computing movements of the optical navigation device based on displacement between the adjusted images. The optical navigation device is located on a surface. The step (d) comprises: collecting reference images of different parts of the surface for a plurality of combinations of moving directions of the optical navigation device and placement directions of the surface; and determining a type of the surface via comparing images of a current surface with the reference images.Type: ApplicationFiled: May 4, 2023Publication date: October 5, 2023Applicant: PixArt Imaging Inc.Inventors: Bo-Yi Chang, Yao-Hsuan Lin
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Patent number: 11740709Abstract: A computer readable recording medium comprising at least one program stored therein. An image quality improving method is performed when the program is executed. The image quality improving method comprises: (a) computing brightness contrast information of an original image captured by an image sensor of an optical navigation device; (b) computing a brightness variation level of the original image; and (c) improving an image quality of the original image based on the brightness contrast information and the brightness variation level.Type: GrantFiled: June 10, 2021Date of Patent: August 29, 2023Assignee: PixArt Imaging Inc.Inventors: Bo-Yi Chang, Yao-Hsuan Lin
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Publication number: 20230176988Abstract: There is provided a detection system including a detection device and a post processor. The detection device and the post processor exchange data therebetween using a predetermined communication protocol. The detection device outputs at least one of calculated data and raw data to the post processor in response to each polling according to a request from the post processor. The raw data is provided to the post processor for the machine learning.Type: ApplicationFiled: December 3, 2021Publication date: June 8, 2023Inventors: Yao-Hsuan LIN, Bo-Yi CHANG, Sheng-Hung WANG, Yu-Chen FU
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Publication number: 20220397966Abstract: A computer readable recording medium comprising at least one program stored therein. An image quality improving method is performed when the program is executed. The image quality improving method comprises: (a) computing brightness contrast information of an original image captured by an image sensor of an optical navigation device; (b) computing a brightness variation level of the original image; and (c) improving an image quality of the original image based on the brightness contrast information and the brightness variation level.Type: ApplicationFiled: June 10, 2021Publication date: December 15, 2022Applicant: PixArt Imaging Inc.Inventors: Bo-Yi Chang, Yao-Hsuan Lin
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Patent number: 9619072Abstract: A touch system with track detecting function includes a touch pad for sequentially sensing a plurality of positions of an indication object at a plurality of moments in order to detect a track of the indication object on the touch pad, and a processor for continuously generating motion vectors according to the track of the indication object on the touch pad, for generating a candidate motion vector according to at least one motion vector, and for nonlinearly generating a target motion vector according to the candidate motion vector in order to move a target shown on a display panel. Each of the motion vectors represents a difference between a position of the indication object and a next position of the indication object.Type: GrantFiled: November 14, 2011Date of Patent: April 11, 2017Assignee: PixArt Imaging Inc.Inventors: Yi-Fang Lee, Yao-Hsuan Lin
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Patent number: 9557831Abstract: An optical navigation method includes: detecting inertia of an image of a feature point; and determining an effective sensing region of an image sensing array according to the detected inertia for reducing power consumption. Besides, an optical navigation apparatus includes a detecting circuit and a determining unit. The detecting circuit is arranged for detecting a moving inertia of a feature point. The determining circuit is coupled to the detecting circuit, and arranged for determining an effective sensing region of an image sensing array according to the detected moving inertia for reducing power consumption.Type: GrantFiled: May 8, 2013Date of Patent: January 31, 2017Assignee: PixArt Imaging Inc.Inventors: Ching-Chih Chen, Ming-Tsan Kao, Chih-Yen Wu, Chien-Jung Huang, Yao-Hsuan Lin, Tzu-Yu Chen
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Patent number: 9316563Abstract: A method of testing an image sensor having a plurality of sensing units includes: utilizing the image sensor to generate a plurality of sensing results respectively corresponding to a plurality of captured images, wherein each sensing result includes a plurality of sensing values respectively generated by the sensing units; and generating a testing result which indicates a performance of the image sensor according to changing of the sensing results.Type: GrantFiled: May 2, 2013Date of Patent: April 19, 2016Assignee: PixArt Imaging Inc.Inventors: Ching-Chih Chen, Ren-Hau Gu, Chih-Yen Wu, Yao-Hsuan Lin, Tzu-Yu Chen
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Patent number: 9146627Abstract: A lift detection method for an optical mouse and an optical mouse with a lift detection function are presented. An average brightness value of pixels captured by part of sensing units of an image sensor is computed after each scanning, and two average brightness values obtained from two adjacent times of scanning are compared, to determine a brightness change of the pixels in each scanning, thereby acquiring a placing state of the optical mouse accordingly.Type: GrantFiled: January 27, 2011Date of Patent: September 29, 2015Assignee: PIXART IMAGING INC.Inventors: Chih-Yen Wu, Yao-Hsuan Lin, Yen-Min Chang
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Patent number: 8934681Abstract: A method for detecting an object and a touchable device are presented, which is capable of detecting an object having a fingerprint feature on an operation interface of the touchable device. An image sensor is used for acquiring acquiring an image on the operation interface, and the acquired image is converted into a signal denoted in a frequency domain by using a frequency conversion function. Signals at a medium-high frequency (MHF) signal region among the signals of the frequency domain are analyzed, so as to generate a first signal and a second signal according to a distribution of the signals of the frequency domain. The first signal indicates existence of the object on the operation interface, and the second signal indicates inexistence of the object on the operation interface.Type: GrantFiled: November 1, 2011Date of Patent: January 13, 2015Assignee: Pixart Imaging Inc.Inventors: Yao-Hsuan Lin, Chih-Yen Wu
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Publication number: 20140097330Abstract: A method of testing an image sensor having a plurality of sensing units includes: utilizing the image sensor to generate a plurality of sensing results respectively corresponding to a plurality of captured images, wherein each sensing result includes a plurality of sensing values respectively generated by the sensing units; and generating a testing result which indicates a performance of the image sensor according to changing of the sensing results.Type: ApplicationFiled: May 2, 2013Publication date: April 10, 2014Applicant: PixArt Imaging Inc.Inventors: Ching-Chih Chen, Ren-Hau Gu, Chih-Yen Wu, Yao-Hsuan Lin, Tzu-Yu Chen
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Publication number: 20140092019Abstract: An optical navigation method includes: detecting inertia of an image of a feature point; and determining an effective sensing region of an image sensing array according to the detected inertia for reducing power consumption. Besides, an optical navigation apparatus includes a detecting circuit and a determining unit. The detecting circuit is arranged for detecting a moving inertia of a feature point. The determining circuit is coupled to the detecting circuit, and arranged for determining an effective sensing region of an image sensing array according to the detected moving inertia for reducing power consumption.Type: ApplicationFiled: May 8, 2013Publication date: April 3, 2014Applicant: PixArt Imaging Inc.Inventors: Ching-Chih Chen, Ming-Tsan Kao, Chih-Yen Wu, Chien-Jung Huang, Yao-Hsuan Lin, Tzu-Yu Chen
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Publication number: 20130050100Abstract: A touch system with track detecting function includes a touch pad for sequentially sensing a plurality of positions of an indication object at a plurality of moments in order to detect a track of the indication object on the touch pad, and a processor for continuously generating motion vectors according to the track of the indication object on the touch pad, for generating a candidate motion vector according to at least one motion vector, and for nonlinearly generating a target motion vector according to the candidate motion vector in order to move a target shown on a display panel. Each of the motion vectors represents a difference between a position of the indication object and a next position of the indication object.Type: ApplicationFiled: November 14, 2011Publication date: February 28, 2013Inventors: Yi-Fang Lee, Yao-Hsuan Lin
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Publication number: 20120212452Abstract: A method for detecting an object and a touchable device are presented, which is capable of detecting an object having a fingerprint feature on an operation interface of the touchable device. An image sensor is used for acquiring acquiring an image on the operation interface, and the acquired image is converted into a signal denoted in a frequency domain by using a frequency conversion function. Signals at a medium-high frequency (MHF) signal region among the signals of the frequency domain are analyzed, so as to generate a first signal and a second signal according to a distribution of the signals of the frequency domain. The first signal indicates existence of the object on the operation interface, and the second signal indicates inexistence of the object on the operation interface.Type: ApplicationFiled: November 1, 2011Publication date: August 23, 2012Inventors: Yao-Hsuan LIN, Chih-Yen Wu
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Publication number: 20120206347Abstract: A method of smoothing the movement of a cursor controlled by an optical pointing apparatus includes the steps of sensing an image of a surface and generating a sensing signal by an optical pointing apparatus, continuously outputting a movement signal to control the movement of a cursor on a display by the sensing signal, and smoothing the continuously outputted movement signal at different levels according to the speed represented by the movement signal.Type: ApplicationFiled: February 8, 2012Publication date: August 16, 2012Applicant: Pixart Imaging Inc.Inventors: Chun Wei CHEN, Hsin Chia Chen, Yao Hsuan Lin
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Publication number: 20120038554Abstract: A lift detection method for an optical mouse and an optical mouse with a lift detection function are presented. An average brightness value of pixels captured by part of sensing units of an image sensor is computed after each scanning, and two average brightness values obtained from two adjacent times of scanning are compared, to determine a brightness change of the pixels in each scanning, thereby acquiring a placing state of the optical mouse accordingly.Type: ApplicationFiled: January 27, 2011Publication date: February 16, 2012Applicant: PIXART IMAGING INC.Inventors: Chih-Yen Wu, Yao-Hsuan Lin, Yen-Min Chang
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Patent number: RE47888Abstract: A touch system with track detecting function includes a touch pad for sequentially sensing a plurality of positions of an indication object at a plurality of moments in order to detect a track of the indication object on the touch pad, and a processor for continuously generating motion vectors according to the track of the indication object on the touch pad, for generating a candidate motion vector according to at least one motion vector, and for nonlinearly generating a target motion vector according to the candidate motion vector in order to move a target shown on a display panel. Each of the motion vectors represents a difference between a position of the indication object and a next position of the indication object.Type: GrantFiled: September 14, 2018Date of Patent: March 3, 2020Assignee: PIXART IMAGING INC.Inventors: Yi-Fang Lee, Yao-Hsuan Lin