Patents by Inventor Tzu-Chiang Shen
Tzu-Chiang Shen 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: 9880280Abstract: An object detection method includes, in turn, enabling a first light source, a second light source and a third light source to transmit a first light wave signal, a second light wave signal and a third light wave signal; in turn, receiving the first light wave signal, the second light wave signal and the third light wave signal reflected by an object to determine strengths of the first light wave signal, the second light wave signal and the third light wave signal, respectively; and determining a first displacement of the object along a first direction according to strength variances of the first light wave signal and the second light wave signal, and determining a second displacement of the object along a second direction according to strength variances of the first light wave signal and the third light wave signal, wherein the first direction is substantially perpendicular to the second direction.Type: GrantFiled: December 1, 2014Date of Patent: January 30, 2018Assignee: Wistron CorporationInventors: Tzu-Chiang Shen, Hui-Chen Lin, Meng-Chao Kao
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Patent number: 9576193Abstract: A gesture recognition method and an gesture recognition apparatus using the same method are proposed. The method includes the following steps: transmitting an infrared signal, and detecting whether an object appears in a predetermined range based on a first infrared signal retrieved from the infrared signal being reflected; when the object appears in the predetermined range, capturing a plurality of images including the object and a plurality of second infrared signals retrieved from the infrared signal being reflected; and recognizing the images to retrieve a horizontal movement direction of a gesture of the object within the predetermined range, and recognizing the second infrared signals to retrieve a depth movement direction of the gesture within the predetermined range.Type: GrantFiled: February 25, 2015Date of Patent: February 21, 2017Assignee: Wistron CorporationInventors: Jie-Ci Yang, Hui-Chen Lin, Tzu-Chiang Shen, Meng-Chao Kao
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Patent number: 9508281Abstract: An apparatus and a method for image analysis and image display are provided. The image display apparatus includes a storage device, a processor, and a display. The storage device stores at least one gain table. Each gain table includes a plurality of gain values. There is a corresponding relationship between the plurality of gain values and a plurality of pixels of an image. For each gray level value of each of the pixels, the processor determines a gain value corresponding to the gray level value according to the at least one gain table. In addition, the processor compensates the image according to the gain values corresponding to the gray level values. The display displays the compensated image.Type: GrantFiled: September 5, 2014Date of Patent: November 29, 2016Assignee: Wistron CorporationInventors: Meng-Chao Kao, Tzu-Chiang Shen, Hui-Chen Lin
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Publication number: 20160140384Abstract: A gesture recognition method and an gesture recognition apparatus using the same method are proposed. The method includes the following steps: transmitting an infrared signal, and detecting whether an object appears in a predetermined range based on a first infrared signal retrieved from the infrared signal being reflected; when the object appears in the predetermined range, capturing a plurality of images including the object and a plurality of second infrared signals retrieved from the infrared signal being reflected; and recognizing the images to retrieve a horizontal movement direction of a gesture of the object within the predetermined range, and recognizing the second infrared signals to retrieve a depth movement direction of the gesture within the predetermined range.Type: ApplicationFiled: February 25, 2015Publication date: May 19, 2016Inventors: Jie-Ci Yang, Hui-Chen Lin, Tzu-Chiang Shen, Meng-Chao Kao
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Publication number: 20160018522Abstract: An object detection method includes, in turn, enabling a first light source, a second light source and a third light source to transmit a first light wave signal, a second light wave signal and a third light wave signal; in turn, receiving the first light wave signal, the second light wave signal and the third light wave signal reflected by an object to determine strengths of the first light wave signal, the second light wave signal and the third light wave signal, respectively; and determining a first displacement of the object along a first direction according to strength variances of the first light wave signal and the second light wave signal, and determining a second displacement of the object along a second direction according to strength variances of the first light wave signal and the third light wave signal, wherein the first direction is substantially perpendicular to the second direction.Type: ApplicationFiled: December 1, 2014Publication date: January 21, 2016Inventors: Tzu-Chiang Shen, Hui-Chen Lin, Meng-Chao Kao
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Publication number: 20150356896Abstract: Apparatuses and methods for image analysis and image display are provided. The image display apparatus includes a storage device, a thermo sensor, a processor, and a display. The storage device stores at least one gain table. Each gain table includes a plurality of gain values. A correspondence relationship is provided between the gain values and a plurality of pixels of an image. The thermo sensor measures an ambient temperature. For each pixel, the processor determines a gain value corresponding to the pixel according to the at least one gain table and the ambient temperature. The processor compensates the image according to the gain values corresponding to the pixels. The display displays the compensated image.Type: ApplicationFiled: July 24, 2014Publication date: December 10, 2015Inventors: Meng-Chao Kao, Tsang-Hsing Lee, Tzu-Chiang Shen, Hui-Chen Lin
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Publication number: 20150348456Abstract: An apparatus and a method for image analysis and image display are provided. The image display apparatus includes a storage device, a processor, and a display. The storage device stores at least one gain table. Each gain table includes a plurality of gain values. There is a corresponding relationship between the plurality of gain values and a plurality of pixels of an image. For each gray level value of each of the pixels, the processor determines a gain value corresponding to the gray level value according to the at least one gain table. In addition, the processor compensates the image according to the gain values corresponding to the gray level values. The display displays the compensated image.Type: ApplicationFiled: September 5, 2014Publication date: December 3, 2015Inventors: Meng-Chao Kao, Tzu-Chiang Shen, Hui-Chen Lin
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Publication number: 20140320039Abstract: A backlight control module comprises a backlight computing unit configuring a frequency of at least one PWM signal according to a frequency of a frame, when at least one area frame of at least one display area is used for displaying the frame; a timing control unit configuring at least one starting time instant of a period of the at least one PWM signal according to at least one starting time instant of the at least one area frame, respectively; and a PWM unit generating the at least one PWM signal, and configuring at least one width of at least one on-period of the period of the at least one PWM signal according to at least one image data of the at least one area frame, respectively, wherein the at least one on-period is located at an end of the period of the at least one PWM signal, respectively.Type: ApplicationFiled: July 24, 2013Publication date: October 30, 2014Applicant: Wistron CorporationInventors: Meng-Chao Kao, Tzu-Chiang Shen, Hui-Chen Lin
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Patent number: 8854437Abstract: A double-layer switchable stereo liquid crystal display includes a timing controller, a microprocessor, a backlight module, a first liquid crystal panel, a controller, and a second liquid crystal panel. The timing controller receives an image signal and generates a left/right eye signal and a two-dimensional/three-dimensional control signal. The microprocessor outputs the image signal, and generates a control signal and a backlight control signal according to output timing of the image signal. The first liquid crystal panel receives and displays the image signal. The controller outputs a voltage control signal according to the control signal. The second liquid crystal panel rotates liquid crystal within the second liquid crystal panel according to the voltage control signal. A period for the second liquid crystal panel rotating the liquid crystal to a second angle is longer than a period for the second liquid crystal panel rotating the liquid crystal to a first angle.Type: GrantFiled: April 12, 2012Date of Patent: October 7, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chun-Chieh Chiu, Tzu-Chiang Shen, Hsiang-Tan Lin, Shih-Chieh Lin
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Publication number: 20130249954Abstract: A liquid crystal display having a back light module and a control unit is provided. The control unit controls the back light module to adjust turn-on time and light luminous intensity of a back light source according to the brightness difference of a left eye image and a right eye image, so as to balance the brightness of the left eye image and the right eye image and improve cross talk problem.Type: ApplicationFiled: May 25, 2012Publication date: September 26, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Chun-Chieh Chiu, Tzu-Chiang Shen, Hsiang-Tan Lin, Shih-Chieh Lin
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Publication number: 20130215103Abstract: A double-layer switchable stereo liquid crystal display includes a timing controller, a microprocessor, a backlight module, a first liquid crystal panel, a controller, and a second liquid crystal panel. The timing controller receives an image signal and generates a left/right eye signal and a two-dimensional/three-dimensional control signal. The microprocessor outputs the image signal, and generates a control signal and a backlight control signal according to output timing of the image signal. The first liquid crystal panel receives and displays the image signal. The controller outputs a voltage control signal according to the control signal. The second liquid crystal panel rotates liquid crystal within the second liquid crystal panel according to the voltage control signal. A period for the second liquid crystal panel rotating the liquid crystal to a second angle is longer than a period for the second liquid crystal panel rotating the liquid crystal to a first angle.Type: ApplicationFiled: April 12, 2012Publication date: August 22, 2013Inventors: Chun-Chieh Chiu, Tzu-Chiang Shen, Hsiang-Tan Lin, Shih-Chieh Lin
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Patent number: 8503764Abstract: The present invention provides a method for generating images of multi-views. The method includes obtaining a 2D original image of an article and background figures of multi-views; calculating the background image range and the main body image range of the 2D original image of the article; cutting the main body image out; generating a depth model according to an equation; cutting the depth model according to the main body image range of the cut 2D image of the article; shifting every pixel in the main body image of the 2D original image of the article according to the cut depth model to obtain shifted main body images of multi-views; and synthesizing the shifted main body images of multi-views and the background figures of multi-views to obtain the final images of multi-views for 3D image reconstruction.Type: GrantFiled: November 18, 2010Date of Patent: August 6, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Meng-Chao Kao, Chien-Hung Chen, Tzu-Chiang Shen
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Publication number: 20130187901Abstract: A circuit for outputting overdrive voltages of a liquid crystal panel includes a memory unit and an overdrive unit. The overdrive unit includes a first lookup table, a second lookup table, and a selector. The memory unit stores a plurality of second pixel voltages corresponding to a second frame displayed by the liquid crystal panel and outputs a plurality of first pixel voltages corresponding to a first frame displayed by the liquid crystal panel stored in the memory unit. The overdrive unit looks up the first lookup table and the second lookup table to generate a first overdrive voltage and a second overdrive voltage according to each first pixel voltage and a corresponding second pixel voltage. The selector outputs the first overdrive voltage or the second overdrive voltage according to a polarity signal and a frame signal.Type: ApplicationFiled: March 22, 2012Publication date: July 25, 2013Inventors: Chun-Chieh Chiu, Hsiang-Tan Lin, Tzu-Chiang Shen, Chien-Hung Chen
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Publication number: 20130147852Abstract: A three-dimensional image display device is provided. The three-dimensional image display device includes a display panel and a plurality of light control units. The display panel includes a pixel array composed of a plurality of pixels. Each of the pixels consists of a plurality of sub-pixels. The sub-pixel has an aspect ratio of about 1:1. A symmetry axis of each of the light control units is substantially parallel to a diagonal of each of the sub-pixels.Type: ApplicationFiled: March 19, 2012Publication date: June 13, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Pei-Lin Hsieh, Chien-Hung Chen, Tzu-Chiang Shen, Hsiang-Tan Lin, Meng-Chao Kao
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Patent number: 8462201Abstract: A stereoscopic image displaying method and a stereoscopic display device thereof is provided. The stereoscopic image displaying method includes a data providing step, a polarization adjusting step, and a backlight controlling step. The stereoscopic display device includes a display panel, a light modulation device, and a backlight module which are respectively configured to perform the data providing step, the polarization adjusting step, and the backlight controlling step. In the backlight controlling step, the time of turn-on and turn-off is adjusted. Alternatively, in the data providing step, black-image data is added.Type: GrantFiled: August 3, 2010Date of Patent: June 11, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hsiang-Tan Lin, Shih-Chieh Lin, Yue-Li Chao, Tzu-Chiang Shen
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Patent number: 8395617Abstract: An image display method receives a two-dimensional image data and a depth data both corresponding to a two-dimensional image and a three-dimensional image. The two-dimensional image data and the depth data is encoded so that the sub-pixels of the two-dimensional image data and the depth data related to the three-dimensional image have gray values whose least significant bits vary in a predetermined manner. After receiving the encoded two-dimensional image data and the encoded depth data at a receiving side, a two-dimensional display region and a two-dimensional display region are detected according to the variations in the gray values of the sub-pixels. The method can thus display the three-dimensional image in the three-dimensional display region of the frame and display the two-dimensional image in the two-dimensional display region of the frame.Type: GrantFiled: April 8, 2010Date of Patent: March 12, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Meng-Chao Kao, Tzu-Chiang Shen
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Patent number: 8325207Abstract: A frame rate adjuster is utilized for adjusting a frame rate of a display according to the brightness of a frame. The frame adjuster comprises a frame counting circuit, a brightness-counting circuit, a brightness-determining circuit, and a frame rate selecting circuit. The frame counting circuit is utilized for determining if gray-level data of the frame are all transmitted and accordingly generating a frame trigger signal. The brightness counting circuit is utilized for generating a plurality of brightness-counting numbers according to the gray-level data of the brightness of the frame. The brightness-determining circuit is utilized for outputting a brightness-determining signal according to the frame trigger signal and the plurality of the brightness-counting numbers. The frame rate selecting circuit is utilized for selecting a reference frame rate among a plurality of reference frame rates so as to adjust the frame rate of the display.Type: GrantFiled: July 28, 2009Date of Patent: December 4, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tzu-Chiang Shen, Hui-Chen Lin
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Patent number: 8311318Abstract: The present invention provides a system for generating images of multi-views.Type: GrantFiled: November 23, 2010Date of Patent: November 13, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Meng-Chao Kao, Chien-Hung Chen, Tzu-Chiang Shen
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Patent number: 8289373Abstract: A multi-depth-of-field 3D-display image processing method is provided. An input image is divided into a foreground and a background signal, resolutions of the foreground and the background signals are compressed into half, the foreground and the background signals with half resolution are synthesized into a relay image to be displayed at a first and a second side of the relay image respectively, and the background signal of the relay image is reversed towards the other side. The relay image is then input to a play device, and a processing circuit reads a forward pixel data and a backward pixel data simultaneously and provides the data to a front and a back panel respectively. The processing circuit magnifies the first side of the front panel and the back panel into a full screen picture towards a predetermined direction, so as to output a full picture 3D image.Type: GrantFiled: April 28, 2009Date of Patent: October 16, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Meng-Chao Kao, Tzu-Chiang Shen
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Patent number: 8253756Abstract: A circuit dithers pixel data on a display, and includes a lookup table module, a dithering parameter decoder, a first adder, a second adder, and an overflow handling module. A lookup table of the lookup table module stores dithering parameters generated by encoding odd and even pixel dithering parameters. The dithering parameter decoder generates second and third dithering parameters corresponding to odd and even pixels from a first dithering parameter. The first adder generates a dithered odd pixel parameter according to the odd pixel parameter and the second dithering parameter. The second adder generates a dithered even pixel parameter according to the even pixel parameter and the third dithering parameter. The overflow handling module checks for overflow, and generates an output odd pixel parameter according to the dithered odd pixel parameter, and generates an output even pixel parameter according to the dithered even pixel parameter.Type: GrantFiled: November 12, 2009Date of Patent: August 28, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Yu-Ju Lee, Tzu-Chiang Shen