Patents by Inventor Chao Chien Huang
Chao Chien Huang 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: 20130063348Abstract: A pointing device includes two lenses with wide and narrow view angles respectively. In a short distance range, the pointing device utilizes the lens with wide view angle to increase visible range. In a long distance range, the pointing device utilizes the lens with narrow view angle to increase size of a formed image of a reference point. In addition, the pointing device senses images through both of the lenses with wide and narrow view angles to obtain rotational information. The pointing device can provide not only positional information but also angular information.Type: ApplicationFiled: June 19, 2012Publication date: March 14, 2013Inventors: Chun-Yi Lu, Cheng-Kuang Sun, Yao-Hui Tseng, Horng-Goung Lai, Chao-Chien Huang, Meng-Huan Hsieh
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Publication number: 20130050079Abstract: An optical pointing system includes a plurality of light sources, an image receiver, and an analyzing unit. The plurality of light sources are disposed on multiple locations of an object and configured to provide light having distinct wavelengths. The image receiver is configured to detect optical signals of the plurality of light sources, thereby generating a plurality of corresponding images. The analyzing unit is configured to calculate a relative position or angle of the image receiver with respect to the object according to the images.Type: ApplicationFiled: May 16, 2012Publication date: February 28, 2013Inventors: Ming-Tsan Kao, Chao-Chien Huang, Chia-Cheun Liang, Yi-Hsien Ko
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Publication number: 20130021237Abstract: An optical remote control system includes a home appliance and a remote controller. The home appliance operates according to a user command and its housing includes an opening. A status indicator light and a reference light are disposed within the opening. The status indicator light includes a visible light source, and the reference light includes a plurality of infrared light sources. The visible light source and the infrared light sources are disposed in a predetermined pattern. The remote controller includes an optical sensor configured to detect optical signals from the infrared light sources, thereby generating the user command accordingly.Type: ApplicationFiled: April 11, 2012Publication date: January 24, 2013Inventors: Ming-Tsan Kao, Chao-Chien Huang, Chia-Cheun Liang, Yi-Hsien Ko
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Patent number: 8305460Abstract: A detection device includes an image capture element, a control signal generator, and a processor. The image capture element is used for capturing an optical signal, and outputting an image signal. The control signal generator is used for generating a control signal. The processor selectively converts the image signal into an object feature or an image feature in response to the control signal. Such a detection device can appropriately convert an operation mode, so as to have both efficacies of reducing the amount of transferred data and processing complex image data.Type: GrantFiled: September 13, 2010Date of Patent: November 6, 2012Assignee: Pixart Imaging Inc.Inventors: Chih Hung Lu, En-Feng Hsu, Hsin-Chia Chen, Chao-Chien Huang, Cho-Yi Lin
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Patent number: 8300011Abstract: A pointer positioning device for positioning an aiming point on a display screen of an image display comprises at least one auxiliary point, an image sensor and an optical filter. The auxiliary point is disposed at the peripheral of the display screen for generating a predetermined spectrum. The image sensor receives signals of the predetermined spectrum generated by the auxiliary point. The optical filter is disposed in front of the image sensor for filtering out spectrum outside the predetermined spectrum such that the image sensor can merely sense the signals of the predetermined spectrum, wherein the auxiliary point is utilized as a reference point for correcting an initial setup and positioning the aiming point so as to position the aiming point inside a predetermined range on the display screen. The present invention also provides a pointer positioning method adapted to the pointer positioning device.Type: GrantFiled: May 4, 2007Date of Patent: October 30, 2012Assignee: PixArt Imaging Inc.Inventors: Tzu Yi Chao, Meng Tsung Wu, Chih Hsin Lin, Hsin Chia Chen, Chao Chien Huang, Hsuan Hsien Lee, Yi Fang Lee
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Publication number: 20120113000Abstract: A cursor control method for controlling a cursor on an image display includes: providing at least two reference points for generating light of a predetermined spectrum and defining a predetermined area; providing an image sensor pointing inside the predetermined area; receiving the light of the predetermined spectrum by the image sensor to form a digital image; identifying positions and shapes of the images of the reference points on the digital image to form a first parameter; performing distance and angle compensations on the first parameter; moving the aiming point of the image sensor inside the predetermined area to form a second parameter; and calculating an displacement of the images of the reference points on the digital image according to the compensated first and second parameters so as to accordingly control the cursor. The present invention further provides a cursor control apparatus.Type: ApplicationFiled: January 13, 2012Publication date: May 10, 2012Applicant: PIXART IMAGING INC.Inventors: Tzu Yi CHAO, Meng Tsung WU, Hsin Chia CHEN, Chih Hsin LIN, Chang Che TSAI, Chao Chien HUANG, Yi Fang LEE
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Patent number: 8169550Abstract: A cursor control method for controlling a cursor on an image display includes: providing at least two reference points for generating light of a predetermined spectrum and defining a predetermined area; providing an image sensor pointing inside the predetermined area; receiving the light of the predetermined spectrum by the image sensor to form a digital image; identifying positions and shapes of the images of the reference points on the digital image to form a first parameter; performing distance and angle compensations on the first parameter; moving the aiming point of the image sensor inside the predetermined area to form a second parameter; and calculating an displacement of the images of the reference points on the digital image according to the compensated first and second parameters so as to accordingly control the cursor. The present invention further provides a cursor control apparatus.Type: GrantFiled: December 27, 2007Date of Patent: May 1, 2012Assignee: Pixart Imaging Inc.Inventors: Tzu Yi Chao, Meng Tsung Wu, Hsin Chia Chen, Chih Hsin Lin, Chang Che Tsai, Chao Chien Huang, Yi Fang Lee
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Patent number: 8125574Abstract: A remote controller for controlling a display device includes a first image sensor, a processing unit and an activation mechanism. The first image sensor is for sensing an object and forming a digital image. The processing unit is coupled to the first image sensor for calculating image variations of the object on the digital image, correspondingly controlling the display device according to the image variations and deactivating the first image sensor after the remote controller is idle for a predetermined period of time. The activation mechanism is coupled to the first image sensor for re-activating the deactivated first image sensor.Type: GrantFiled: October 19, 2007Date of Patent: February 28, 2012Assignee: PixArt Imaging Inc.Inventors: Meng Tsung Wu, Chih Hung Lu, Chao Chien Huang
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Publication number: 20120001848Abstract: An interactive pointing device capable of switching capture ranges includes an image capturing element and a processing unit. The image capturing element operates in a first capture range or a second capture range. The image capturing element is used for capturing a light source, and outputting an image signal. When a distance from the interactive pointing device to the light source is smaller than a reference value, the processing unit controls the image capturing element to detect the light source with the first capture range, and the processing unit converts the image signal into a first coordinate data. When the distance is greater than the reference value, the processing unit controls the image capturing element to detect the light source with the second capture range, and the processing unit converts the image signal into a second coordinate data.Type: ApplicationFiled: September 16, 2010Publication date: January 5, 2012Applicant: PIXART IMAGING INC.Inventors: Chih Hung Lu, En Feng Hsu, Shih Chi Chien, Ming Tsan Kao, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
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Publication number: 20110316773Abstract: An interactive pointing device capable of switching capture ranges includes an image capturing element and a processing unit. The image capturing element is used for capturing an optical signal, and outputting an image signal. The processing unit is used for determining a switching signal, and responsible for processing and analyzing the image signal. Through the determination about the switching signal and the coordinate conversion of the image signal by an arithmetic unit, the interactive pointing device capable of switching capture ranges is enabled to be operable in hosts with different resolutions.Type: ApplicationFiled: September 13, 2010Publication date: December 29, 2011Applicant: PIXART IMAGING INC.Inventors: Chih Hung Lu, En Feng Hsu, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
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Publication number: 20110317040Abstract: A detection device includes an image capture element, a control signal generator, and a processor. The image capture element is used for capturing an optical signal, and outputting an image signal. The control signal generator is used for generating a control signal. The processor selectively converts the image signal into an object feature or an image feature in response to the control signal. Such a detection device can appropriately convert an operation mode, so as to have both efficacies of reducing the amount of transferred data and processing complex image data.Type: ApplicationFiled: September 13, 2010Publication date: December 29, 2011Applicant: PIXART IMAGING INC.Inventors: Chih Hung Lu, En Feng Hsu, Hsin Chia Chen, Chao Chien Huang, Cho Yi Lin
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Publication number: 20110032230Abstract: A control device for an image display includes at least two reference points, a modulation unit and a remote controller. The modulation unit modulates the light of a predetermined spectrum generated by the reference points with a brightness variation cycle. The modulation unit controls the reference points to emit the light with a first brightness within a first period of the brightness variation cycle and to emit the light with a second brightness within a second period of the brightness variation cycle, wherein the first brightness and the second brightness are not zero gray level. The remote controller captures the light of the predetermined spectrum with a sampling cycle and demodulates an image variation of the reference points with respect to the remote controller. The present invention further provides a control method for an image display.Type: ApplicationFiled: October 21, 2010Publication date: February 10, 2011Applicant: PIXART IMAGING INCInventors: Cheng Kuang SUN, En Feng HSU, Chao Chien HUANG, Cho Yi LIN
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Publication number: 20090161026Abstract: A remote controller for controlling a display device includes a first image sensor, a processing unit and an activation mechanism. The first image sensor is for sensing an object and forming a digital image. The processing unit is coupled to the first image sensor for calculating image variations of the object on the digital image, correspondingly controlling the display device according to the image variations and deactivating the first image sensor after the remote controller is idle for a predetermined period of time. The activation mechanism is coupled to the first image sensor for re-activating the deactivated first image sensor.Type: ApplicationFiled: October 19, 2007Publication date: June 25, 2009Applicant: PIXART IMAGING INC.Inventors: Meng Tsung Wu, Chih Hung Lu, Chao Chien Huang
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Publication number: 20080158436Abstract: A cursor control method for controlling a cursor on an image display includes: providing at least two reference points for generating light of a predetermined spectrum and defining a predetermined area; providing an image sensor pointing inside the predetermined area; receiving the light of the predetermined spectrum by the image sensor to form a digital image; identifying positions and shapes of the images of the reference points on the digital image to form a first parameter; performing distance and angle compensations on the first parameter; moving the aiming point of the image sensor inside the predetermined area to form a second parameter; and calculating an displacement of the images of the reference points on the digital image according to the compensated first and second parameters so as to accordingly control the cursor. The present invention further provides a cursor control apparatus.Type: ApplicationFiled: December 27, 2007Publication date: July 3, 2008Applicant: PIXART IMAGING INC.Inventors: Tzu Yi CHAO, Meng Tsung Wu, Hsin Chia Chen, Chih Hsin Lin, Chang Che Tsai, Chao Chien Huang, Yi Fang Lee
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Publication number: 20070273646Abstract: A pointer positioning device for positioning an aiming point on a display screen of an image display comprises at least one auxiliary point, an image sensor and an optical filter. The auxiliary point is disposed at the peripheral of the display screen for generating a predetermined spectrum. The image sensor receives signals of the predetermined spectrum generated by the auxiliary point. The optical filter is disposed in front of the image sensor for filtering out spectrum outside the predetermined spectrum such that the image sensor can merely sense the signals of the predetermined spectrum, wherein the auxiliary point is utilized as a reference point for correcting an initial setup and positioning the aiming point so as to position the aiming point inside a predetermined range on the display screen. The present invention also provides a pointer positioning method adapted to the pointer positioning device.Type: ApplicationFiled: May 4, 2007Publication date: November 29, 2007Applicant: PIXART IMAGING INC.Inventors: Tzu Yi CHAO, Meng Tsung WU, Chih Hsin LIN, Hsin Chia CHEN, Chao Chien HUANG, Hsuan Hsien LEE, Yi Fang LEE