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).

  • Optical navigation device
    Patent number: 9354717
    Abstract: There is provided an optical navigation device including at least one light source, an image sensor and a processing unit. The light source illuminates a work surface in a first brightness value and a second brightness value. The image sensor receives reflected light from the work surface and outputs a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value. The processing unit calculates a differential image of the first image frame and the second image frame and identifies an operating state according to the differential image.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: May 31, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Yu-Hao Huang, Ren-Hau Gu, Hsin-Chia Chen, Ming-Tsan Kao
  • Portable interactive electronic apparatus
    Patent number: 9348361
    Abstract: A portable interactive electronic apparatus includes a shell and a touch control panel having a cover plate. The cover plate includes a first surface area and a second surface area, and the touch control panel is positioned on the shell. The first surface area is utilized for sensing a touch of a user's finger, and the second surface area is utilized for leading liquid components out from the cover plate.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: May 24, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Yu-Hao Huang, Ming-Tsan Kao, Yung-Chang Lin, Hui-Hsuan Chen
  • Computer readable media can perform interference image determining method and interference image determining apparatus
    Patent number: 9335841
    Abstract: A computer readable media having at least one program code recorded thereon. An interference image determining method can be performed when the program code is read and executed. The interference image determining method comprises: (a) controlling a light source to illuminate an object on a detecting surface to generate an image; (b) controlling a sensor to catch a current frame of the image; (c) utilizing an image characteristic included in the current frame to determine a interference image part of the current frame; and (d) updating a defined interference image according to the determined interference image part.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: May 10, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Hsin-Chia Chen, Yen-Min Chang, Yu-Hao Huang, Wen-Han Yao, Ching-Lin Chung, Yung-Chang Lin, Tsung-Fa Wang, Ming-Tsan Kao
  • EXPOSURE MECHANISM OF OPTICAL TOUCH SYSTEM AND OPTICAL TOUCH SYSTEM USING THE SAME
    Publication number: 20160124577
    Abstract: An exposure mechanism of an optical touch system, which includes a plurality of image sensors and a plurality of active light sources each irradiating corresponding to the associated image sensor, includes: capturing image frames using the image sensors with a sampling cycle to allow each of the image sensors to capture a bright image, wherein the sampling cycle includes a plurality of working modes and in each of the working modes at least one of the image sensors captures the bright image in a sampling interval; simultaneously capturing a dark image using all the image sensors in a denoising sampling interval; and calculating a differential image between the bright image and the dark image captured by each image sensor.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventors: Ming-Tsan KAO, Tzung-Min SU, Chih-Hsin LIN
  • Device and method for determining gesture and operation method of gesture determining device
    Patent number: 9317744
    Abstract: A device for determining a gesture includes a light emitting unit, an image sensing device and a processing circuit. The light emitting unit emits a light beam. The image sensing device captures an image of a hand reflecting the light beam. The processing circuit obtains the image and determines a gesture of the hand by performing an operation on the image; wherein the operation includes: selecting pixels in the image having a brightness greater than or equal to a brightness threshold; dividing the selected pixels; and determining the gesture of the hand according to a number of group of divided pixels. A method for determining a gesture and an operation method of the aforementioned device are also provided.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: April 19, 2016
    Assignee: Pixart Imaging Inc.
    Inventors: Yu-Hao Huang, Ming-Tsan Kao, Sen-Huang Huang, Nien-Tse Chen, En-Feng Hsu, Yi-Yuan Chen
  • Remote controller and display system
    Patent number: 9314173
    Abstract: There is provided a remote controller including a plurality of press buttons, an optical finger mouse and a transmission interface. The press buttons are configured to trigger a control signal. The optical finger mouse is configured to detect a physiological characteristic and a displacement. The transmission interface is configured to output the control signal, the physiological characteristic and the displacement to a display device. There is further provided a display system.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 19, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Ren-Hau Gu, Ming-Tsan Kao, Sen-Huang Huang
  • Optical finger mouse, electronic device and physiological characteristics detection device
    Patent number: 9301694
    Abstract: There is provided an optical finger mouse including two light sources, an image sensor and a processing unit. The two light sources emit light of different wavelengths to illuminate a finger surface. The image sensor receives reflected light from the finger surface to generate a plurality of image frames. The processing unit detects a displacement and a contact status of the finger surface and a physiological characteristic of a user according to the plurality of image frames. There is further provided an electronic device and a physiological characteristic detection device.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 5, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Ren Hau Gu, Ming Tsan Kao, Sen Huang Huang
  • Remote device and power saving method of interactive system
    Patent number: 9304574
    Abstract: A remote device includes an image sensor, a readout circuit and a processing unit. The image sensor successively captures a first image and a second image containing at least one reference beacon image. The readout circuit is configured to read first image data of the first image and second image data of the second image from the image sensor. The processing unit is configured to calculate an image feature of the at least one reference beacon image according to the first image data and control the readout circuit to only read the second image data of a range of interest in the second image according to the image feature. There is further provided a power saving method of an interactive system.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: April 5, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Tsan Kao, Chia-Cheun Liang
  • User Identification method, physiological detection device and physiological detection method
    Patent number: 9289159
    Abstract: There is provided a physiological detection device including a finger detection unit, a storage unit and a processing unit. The finger detection unit is configured to detect a current track drawn by a current user and current physiological information of the current user. The storage unit is configured to previously store track features of predetermined tracks drawn, for a predetermined time interval or a predetermined times on the finger detection unit, by a plurality of users and each of the track features is associated with one of the users. The processing unit is configured to analyze the current track and identify the current user according to the track features in the storage unit. There is further provided a physiological detection method and a user identification method.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: March 22, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Tsan Kao, Sen-Huang Huang, Ren-Hau Gu, Chung-Yuo Wu
  • Lane departure warning system, lane identification apparatus and related method thereof
    Patent number: 9286805
    Abstract: The present invention provides a lane departure warning system including an image sensing device, an identification module and a determination module. The image sensing device generates a video. The identification module identifies a plurality of lane lines of at least one lane on which a vehicle is currently driven from the video, to generate an identification result, wherein the identification result is generated based on specific borderlines of the lane lines. The determination module determines a determination strategy according to vehicle speed information, and generates a determination result according to the determination strategy and the identification result. The lane departure warning system determines whether to issue a warning according to the determination result.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: March 15, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Tse-Chung Su, Ming-Tsan Kao
  • Exposure mechanism of optical touch system and optical touch system using the same
    Patent number: 9285927
    Abstract: An exposure mechanism of an optical touch system, which includes a plurality of image sensors and a plurality of active light sources each irradiating corresponding to the associated image sensor, includes: capturing image frames using the image sensors with a sampling cycle to allow each of the image sensors to capture a bright image, wherein the sampling cycle includes a plurality of working modes and in each of the working modes at least one of the image sensors captures the bright image in a sampling interval; simultaneously capturing a dark image using all the image sensors in a denoising sampling interval; and calculating a differential image between the bright image and the dark image captured by each image sensor.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: March 15, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Tsan Kao, Tzung-Min Su, Chih-Hsin Lin
  • GESTURE RECOGNITION APPARATUS AND COMPLEX OPTICAL APPARATUS
    Publication number: 20160072984
    Abstract: The present invention discloses a gesture recognition apparatus including a substrate, a light emitting device, an image sensor and a processing unit. The light emitting device is for emitting a light beam according to a first clock signal. The image sensor is disposed on the substrate and is for receiving the light beam reflected by an object according to a second clock signal to generate an object image. The processing unit is disposed on the substrate and is for recognizing the object image detected by the image sensor to provide a command signal. There is a correlation between a period of the first clock signal and a period of the second clock signal. The present invention also provides a complex optical apparatus.
    Type: Application
    Filed: November 18, 2015
    Publication date: March 10, 2016
    Applicant: PixArt Imaging Incorporation
    Inventors: En-Feng Hsu, Ming-Tsan Kao, Yu-Hao Huang, Yi-Hsien Ko, Nien-Tse Chen
  • Object tracking apparatus and control method thereof
    Patent number: 9275610
    Abstract: The present invention discloses an object tracking apparatus including a reference object, an optical sensor and a controller. The reference object has a plurality of light emitting devices, for generating an optical signal. The optical sensor is for detecting the optical signal and generating an identification signal in response to the optical signal. The controller is for generating a control signal according to the identification signal and outputting the control signal to the reference object, thereby adaptively adjusting a light emitting number or light emitting intensity of the plurality of light emitting devices. The present invention discloses a method for controlling an object tracking apparatus.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: March 1, 2016
    Assignee: PIXART IMAGING INCORPORATION
    Inventors: Wen-Yu Yang, Chia-Cheun Liang, Chi-Yang Huang, Han-Ping Cheng, Ming-Tsan Kao
  • Optical touch device and related image detecting component and locating method
    Patent number: 9274650
    Abstract: A locating method applied to an optical touch device is disclosed. The optical touch device includes at least one image detecting component for detecting an imaging position of an object and generating a touch position of the object on a plane according to the imaging position. The at least one image detecting component includes a plurality of pixels. The locating method includes dividing the pixels into a first group and a second group along a first direction, analyzing dimension ratios of a darkness point respectively relative to the first group and the second group when the darkness point formed by the object is simultaneously detected by the first group and the second group, and calculating the imaging position of the darkness point inside the image detecting component according to the dimension ratios.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: March 1, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Tzung-Min Su, Yi-Hsien Ko, Hsin-Chi Cheng, Ming-Tsan Kao
  • Method and system for gesture identification based on object tracing
    Patent number: 9268409
    Abstract: A method and system provide light to project to an operation space so that a received image from the operation space will include, if an object is in the operation space, a bright region due to the reflection of light by the object, and identify a gesture according to the variation of a barycenter position, an average brightness, or an area of the bright region in successive images, for generating a corresponding command. Only simple operation and calculation is required to detect the motion of an object moving in the X, Y, or Z axis of an image, for identifying a gesture represented by the motion of the object.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: February 23, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Yu-Hao Huang, En-Feng Hsu, Ming-Tsan Kao
  • Displacement detection device
    Patent number: 9269148
    Abstract: A displacement detection device includes a light source, an image sensor and a processing unit. The light source is configured to illuminate a work surface. The image sensor is configured to capture reflected light from the work surface and to output an image frame. The processing unit is configured to select a window of interest in the image frame having a maximum image feature and to calculate a displacement of the displacement detection device according to the window of interest.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: February 23, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Ming-Tsan Kao, Ren-Hau Gu, Yu-Hao Huang
  • FIRST ELECTRONIC APPARATUS CAPABLE OF ACTIVELY PAIRING WITH SECOND ELECTRONIC APPARATUS FOR WIRELESS COMMUNICATION AND CORRESPONDING METHOD
    Publication number: 20160050700
    Abstract: A first electronic apparatus capable of pairing with a second electronic apparatus for wireless communication includes a light sensor and a processing circuit. The light sensor is used for detecting light emitted by the second electronic apparatus. The processing circuit is coupled the light sensor and used for decoding the detected light to generate decoded pairing data. The first and second electronic apparatuses pair successfully according to the decoded pairing data. The light carrying the pairing data is generated by the second electronic apparatus based on at least one of brightness variation(s), color variation(s), and pattern variation(s).
    Type: Application
    Filed: January 28, 2015
    Publication date: February 18, 2016
    Inventors: Ren-Hau Gu, Ming-Tsan Kao
  • BIOMETRIC DETECTION MODULE WITH DENOISING FUNCTION AND BIOMETRIC DETECTION METHOD THEREOF
    Publication number: 20160007929
    Abstract: 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: Application
    Filed: April 14, 2015
    Publication date: January 14, 2016
    Inventors: CHIH-YUAN CHUANG, CHENG-NAN TSAI, MING-TSAN KAO, YEN-MIN CHANG
  • INDIVIDUALIZED CONTROL SYSTEM UTILIZING BIOMETRIC CHARACTERISTIC AND OPERATING METHOD THEREOF
    Publication number: 20160012656
    Abstract: A control system including a detection device and a control host is provided. The detection device is configured to detect a biometric characteristic to accordingly identify a user ID, and output an ID signal according to the user ID. The control host is configured to receive the ID signal to accordingly perform an individualized control associated with the user ID.
    Type: Application
    Filed: April 13, 2015
    Publication date: January 14, 2016
    Inventors: CHIH-YUAN CHUANG, CHENG-NAN TSAI, MING-TSAN KAO, YEN-MIN CHANG
  • Object tracking device capable of removing background noise and operating method thereof
    Patent number: 9234756
    Abstract: An optical tracking device includes a light source, an image sensor and a processing unit. The light source emits light at a lighting frequency. The image sensor outputs an operating image when the light source is being turned on and outputs a background image when the light source is being turned off. The processing unit is configured to obtain background information from the background image, calculate a differential image of the operating image and the background image, obtain object information from the differential image and compare the background information and the object information thereby removing background noise.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: January 12, 2016
    Assignee: PIXART IMAGING INC
    Inventors: Ming-Tsan Kao, Shu-Sian Yang, Han-Ping Cheng