Patents by Inventor Teng-Wei Hsu
Teng-Wei Hsu 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: 9354749Abstract: There is provided an optical touch system including a touch surface, a plurality of image sensors and a plurality or compensation light sources, wherein each of the image sensors is adjacent to one of the compensation light sources. When one of the image sensors is capturing an image frame, the compensation light source not adjacent to and within a field of view of the image sensor which is capturing the image frame irradiates so as to compensate a brightness distribution of the image frame.Type: GrantFiled: October 11, 2013Date of Patent: May 31, 2016Assignee: PIXART IMAGING INC.Inventors: Cheng-Nan Tsai, Tzung-Min Su, Chih-Hsin Lin, Yaun-Yu Peng, Yu-Chia Lin, Chuan-Ching Lin, Teng Wei Hsu
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Patent number: 9292130Abstract: The present invention provides an optical touch system configured to determine an object region according to a brightness information acquired by a brightness sensing unit and to identify a block information of objects within the object region according to an image information acquired by an image sensing unit. The present invention further provides an objection detection method for an optical touch system.Type: GrantFiled: September 22, 2011Date of Patent: March 22, 2016Assignee: PIXART IMAGING INC.Inventors: Cheng Nan Tsai, Tzung Min Su, Chih Hsin Lin, Yuan Yu Peng, Teng Wei Hsu, Yu Chia Lin
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Patent number: 9204043Abstract: An image sensing module includes an image sensor and a sensing controller. The image sensor captures an image with a first frequency. The sensing controller determines whether the image sensor has detected an object according to the image. When the sensing controller determines that the image sensor has detected an object, the sensing controller switches the image sensor to capture the image with a second frequency for the image sensor to continuously detect the location of the object. By setting the first frequency higher than the second frequency, the image-sensing module detects the object in real time and the power consumption of the image-sensing module continuously detecting the location of the object is saved as well.Type: GrantFiled: November 16, 2011Date of Patent: December 1, 2015Assignee: PixArt Imaging Inc.Inventors: Ming-Tsan Kao, Jian-Lung Tzeng, Hsin-Chi Cheng, Teng-Wei Hsu
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Patent number: 9170682Abstract: An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the target signal, and selecting the target signal as an object signal when the absolute values of the at least one rising slope and at least one falling slope are greater than a threshold.Type: GrantFiled: April 13, 2012Date of Patent: October 27, 2015Assignee: Pixart Imaging Inc.Inventors: Tzung Min Su, Yu Chia Lin, Teng Wei Hsu, Chih Hsin Lin, Cheng Nan Tsai
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Patent number: 9151599Abstract: The present invention provides an image sensing module including an image sensing device and a calculation device. The image sensing device includes a plurality of pixels for acquiring an operation image containing an object image. The calculation device stores a look-up table regarding a temperature related parameter and a position deviation of the object image at each pixel associated with the temperature related parameter, and selects a deformation error from the look-up table according to the temperature related parameter corresponding to the operation image so as to correct a current position of the object image in the operation image.Type: GrantFiled: April 29, 2011Date of Patent: October 6, 2015Assignee: PIXART IMAGING INC.Inventors: Cheng Nan Tsai, Chun Yi Lu, Hui Hsuan Chen, Hung Ching Lai, Yuan Yu Peng, Tsung Min Su, Chih Hsin Lin, Yu Chia Lin, Teng Wei Hsu, Chuan Ching Lin
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Patent number: 8994693Abstract: A locating method for an optical touch device to calculate a position of a light blocking object is provided. The optical touch device includes a number of image detecting components. Each of the image detecting components includes a number of pixels arranged in a straight line. In the locating method, the pixels of each of the image detecting components are at least divided into a first group and a second group. When the first group detects a dark point caused by the light blocking object, the position of the dark point is calculated using a first calculating method. When the second group detects the dark point, the position of the dark point is calculated using a second calculating method. The locating method can determine the position of the light blocking object accurately. An optical touch device that is suitable for using the locating method is also provided.Type: GrantFiled: April 8, 2010Date of Patent: March 31, 2015Assignee: Pixart Imaging Inc.Inventors: Ming-Tsan Kao, Hsin-Chi Cheng, Teng-Wei Hsu
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Publication number: 20140111481Abstract: There is provided an optical touch system including a touch surface, a plurality of image sensors and a plurality or compensation light sources, wherein each of the image sensors is adjacent to one of the compensation light sources. When one of the image sensors is capturing an image frame, the compensation light source not adjacent to and within a field of view of the image sensor which is capturing the image frame irradiates so as to compensate a brightness distribution of the image frame.Type: ApplicationFiled: October 11, 2013Publication date: April 24, 2014Applicant: PixArt Imaging Inc.Inventors: Cheng-Nan TSAI, Tzung-Min SU, Chih-Hsin LIN, Yaun-Yu PENG, Yu-Chia LIN, Chuan-Ching LIN, Teng Wei HSU
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Patent number: 8305363Abstract: A sensing system includes a frame having a first boundary, a second boundary, a third boundary and a fourth boundary and defining a sensing area therein, a light source module for providing light to the sensing area, a first image sensor, a second image sensor, a third image sensor and a mirror component. The first image sensor is disposed between two neighboring ends of the first and second boundaries. The second image sensor is disposed between two neighboring ends of the second and third boundaries. The third image sensor is disposed between two neighboring ends of the first and fourth boundaries. The mirror component is disposed at the fourth boundary. A locating method of the sensing system can determine a location of a pointer accurately and avoid a problem of a blind zone.Type: GrantFiled: February 10, 2010Date of Patent: November 6, 2012Assignee: Pixart ImagingInventors: Teng-Wei Hsu, Hsin-Chi Cheng
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Publication number: 20120262423Abstract: An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the target signal, and selecting the target signal as an object signal when the absolute values of the at least one rising slope and at least one falling slope are greater than a threshold.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: PIXART IMAGING INC.Inventors: Tzung Min SU, Yu Chia LIN, Teng Wei HSU, Chih Hsin LIN, Cheng Nan TSAI
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Publication number: 20120127129Abstract: An optical touch screen system includes a sensing device and a processing unit. The sensing device includes first and second sensors, each generating an image. The images include the image information of a plurality of objects. The processing unit generates a plurality of candidate coordinates according to the image information and selects a portion of the candidate coordinates as output coordinates according to an optical feature of the image information.Type: ApplicationFiled: November 22, 2011Publication date: May 24, 2012Applicant: Pixart Imaging Inc.Inventors: Tzung Min Su, Cheng Nan Tsai, Chih Hsin Lin, Yuan Yu Peng, Yu Chia Lin, Teng Wei Hsu, Chun Yi Lu
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Publication number: 20120120247Abstract: An image sensing module includes an image sensor and a sensing controller. The image sensor captures an image with a first frequency. The sensing controller determines whether the image sensor has detected an object according to the image. When the sensing controller determines that the image sensor has detected an object, the sensing controller switches the image sensor to capture the image with a second frequency for the image sensor to continuously detect the location of the object. By setting the first frequency higher than the second frequency, the image-sensing module detects the object in real time and the power consumption of the image-sensing module continuously detecting the location of the object is saved as well.Type: ApplicationFiled: November 16, 2011Publication date: May 17, 2012Inventors: Ming-Tsan Kao, Jian-Lung Tzeng, Hsin-Chi Cheng, Teng-Wei Hsu
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Publication number: 20120120024Abstract: A touch system and an optical touch system with a power-saving mechanism are presented. The touch system includes a sensing module and a processing module electrically connected to the sensing module; the optical touch system includes an optical sensing module and a processing module electrically connected to the optical sensing module. The processing module modulates a working frequency and/or a working voltage of the processing module according to a touch point count on a touch region, a preset function of the processing module, and/or an imaging count detected by the optical sensing module, so as to decrease a power consumption of the processing module. An electronic device equipped with such system may not only dynamically adjust the working frequency and/or the working voltage of the processing module, but also can determine a working frequency and/or a working voltage satisfying a report rate through an input of the system.Type: ApplicationFiled: June 7, 2011Publication date: May 17, 2012Applicant: PixArt Imaging Inc.Inventors: Yu-Chia Lin, Tzung-Min Su, Cheng-Nan Tsai, Chih-Hsin Lin, Teng-Wei Hsu, Yuan-Yu Peng, Chuan-Ching Lin
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Publication number: 20120075253Abstract: The present invention provides an optical touch system configured to determine an object region according to a brightness information acquired by a brightness sensing unit and to identify a block information of objects within the object region according to an image information acquired by an image sensing unit. The present invention further provides an objection detection method for an optical touch system.Type: ApplicationFiled: September 22, 2011Publication date: March 29, 2012Applicant: PIXART IMAGING INC.Inventors: Cheng Nan TSAI, Tzung Min SU, Chih Hsin LIN, Yuan Yu PENG, Teng Wei HSU, Yu Chia LIN
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Publication number: 20110309234Abstract: The present invention provides an image sensing module including an image sensing device and a calculation device. The image sensing device includes a plurality of pixels for acquiring an operation image containing an object image. The calculation device stores a look-up table regarding a temperature related parameter and a position deviation of the object image at each pixel associated with the temperature related parameter, and selects a deformation error from the look-up table according to the temperature related parameter corresponding to the operation image so as to correct a current position of the object image in the operation image.Type: ApplicationFiled: April 29, 2011Publication date: December 22, 2011Applicant: PIXART IMAGING INC.Inventors: Cheng Nan TSAI, Chun Yi LU, Hui Hsuan CHEN, Hung Ching LAI, Yuan Yu PENG, Tsung Min Su, Chih Hsin LIN, Yu Chia LIN, Teng Wei HSU, Chuan Ching LIN
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Patent number: 7978668Abstract: An apparatus, method, and computer readable medium thereof for simultaneously establishing links with a plurality of nodes in a wireless network are provided. A processing module determines whether a mesh network configuration message of the apparatus has space to packet an information element and determines whether to transmit a Neighbor Link Establishment information element to one of the nodes. If the mesh network configuration message has space to packet an information element and the Neighbor Link Establishment information element needs to be transmitted to one of the nodes, the Neighbor Link Establishment information element will be packeted into the mesh network configuration message. Finally, a transmission module transmits the mesh network configuration message to the nodes in order to solve the problem of increasing time during link establishment and avoid deadlock among the nodes when the apparatus of the prior art establishes links with the nodes simultaneously.Type: GrantFiled: March 8, 2007Date of Patent: July 12, 2011Assignee: Institute for Information IndustryInventors: Shie-Yuan Wang, Frank Chee-Da Tsai, Hsu-Heng Weng, Chih-Che Lin, Ku-Han Fan, Teng-Wei Hsu
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Publication number: 20110116104Abstract: A locating method for an optical touch device to calculate a position of a light blocking object is provided. The optical touch device includes a number of image detecting components. Each of the image detecting components includes a number of pixels arranged in a straight line. In the locating method, the pixels of each of the image detecting components are at least divided into a first group and a second group. When the first group detects a dark point caused by the light blocking object, the position of the dark point is calculated using a first calculating method. When the second group detects the dark point, the position of the dark point is calculated using a second calculating method. The locating method can determine the position of the light blocking object accurately. An optical touch device that is suitable for using the locating method is also provided.Type: ApplicationFiled: April 8, 2010Publication date: May 19, 2011Inventors: Ming-Tsan KAO, Hsin-Chi Cheng, Teng-Wei Hsu
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Publication number: 20100141963Abstract: A sensing system includes a frame having a first boundary, a second boundary, a third boundary and a fourth boundary and defining a sensing area therein, a light source module for providing light to the sensing area, a first image sensor, a second image sensor, a third image sensor and a mirror component. The first image sensor is disposed between two neighboring ends of the first and second boundaries. The second image sensor is disposed between two neighboring ends of the second and third boundaries. The third image sensor is disposed between two neighboring ends of the first and fourth boundaries. The mirror component is disposed at the fourth boundary. A locating method of the sensing system can determine a location of a pointer accurately and avoid a problem of a blind zone.Type: ApplicationFiled: February 10, 2010Publication date: June 10, 2010Inventors: Teng-Wei HSU, Hsin-Chi Cheng
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Publication number: 20080137623Abstract: An apparatus, method, and computer readable medium thereof for simultaneously establishing links with a plurality of nodes in a wireless network are provided. A processing module determines whether a mesh network configuration message of the apparatus has space to packet an information element and determines whether to transmit a Neighbor Link Establishment information element to one of the nodes. If the mesh network configuration message has space to packet an information element and the Neighbor Link Establishment information element needs to be transmitted to one of the nodes, the Neighbor Link Establishment information element will be packeted into the mesh network configuration message. Finally, a transmission module transmits the mesh network configuration message to the nodes in order to solve the problem of increasing time during link establishment and avoid deadlock among the nodes when the apparatus of the prior art establishes links with the nodes simultaneously.Type: ApplicationFiled: March 8, 2007Publication date: June 12, 2008Applicant: INSTITUTE FOR INFORMATION INDUSTRYInventors: Shie-Yuan Wang, Frank Chee-Da Tsai, Hsu-Heng Weng, Chih-Che Lin, Ku-Han Fan, Teng-Wei Hsu
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Publication number: 20080130552Abstract: A connection node, a method, a computer program, and a computer readable medium thereof for recalculating a transmission opportunity when an apparatus requests to enter a wireless network are provided. A receiving module receives a mesh network entry message transmitted from the apparatus. A memory stores an identification of a sponsor node. A processing module determines whether an original neighboring node list comprises the identification. If no, the processing module updates the original neighboring node list according to the identification, and recalculates a transmission opportunity of a mesh network configuration message of the connection node. Finally, a transmission module transmits the mesh network configuration message according to the transmission opportunity in order to solve the problem that mesh network configuration messages of nodes collide with each other of the prior art.Type: ApplicationFiled: March 8, 2007Publication date: June 5, 2008Applicant: INSTITUTE FOR INFORMATION INDUSTRYInventors: Shie-Yuan Wang, Frank Chee-Da Tsai, Hsu-Heng Weng, Chih-Che Lin, Ku-Han Fan, Teng-Wei Hsu