Patents by Inventor Hao TIEN

Hao TIEN 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).

  • Patent number: 10268788
    Abstract: A method includes building a driver model in frequency domain, extracting S (scattering) parameters, the S parameters to describe a real curve that represents a real signal channel between the driver model and a load circuit, and generating, based on the extracted S parameters, an approaching curve of the real curve, the approaching curve being expressed in an approaching equation.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: April 23, 2019
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Hui-Yu Lee, Hao-Tien Kan
  • Patent number: 10223778
    Abstract: An image contrast enhancement method and an apparatus thereof are disclosed, which calculate the degree of influencing the clarity according to the influence feature (e.g., heavy fog, dust, smoke, or etc.) in the image, and then adjust the brightness of the pixels corresponding to features of influencing the clarity according to the degree, thereby enhancing image contrast and removing phenomenon of influencing the clarity in the image.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: March 5, 2019
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Hao-Tien Chiang, Tsung-Hsuan Li, Shih-Tse Chen
  • Patent number: 10198798
    Abstract: An image-filtering device for filtering an image that includes a pixel difference computing module, an adaptive brightness adjusting module, a weighting computing module and a filter computing module is provided. The pixel difference computing module uses any one of the pixels as a central pixel within a pixel window to compute pixel absolute differences between the central pixel and every pixels within the pixel window. The adaptive brightness adjusting module multiplies each of the pixel absolute differences with an adjusting parameter to generate adjusted pixel absolute differences. The weighting computing module generates weighting values according to the adjusted pixel absolute differences. The filter computing module performs convolution according to the pixel value of each of the pixels within the pixel window and the corresponding weighting values to generate a filtering result of the central pixel.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: February 5, 2019
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Hao-Tien Chiang, Tsung-Hsuan Li, Shih-Tse Chen
  • Patent number: 10146505
    Abstract: Provided is a fast divider including an initial parameter setting unit and an arithmetic unit. The arithmetic unit is coupled to the initial parameter setting unit that receives a divisor and a dividend, and sets a plurality of initial parameters of a sequence according to the divisor and the dividend. The plurality of initial parameters includes an initial term, a first term and a common ratio having an absolute value smaller than 1. The arithmetic unit stores a recurrence relation of the sequence and iteratively computes a quotient using the recurrence relation according to the plurality of initial parameters. The recurrence relation indicates that a (k+1)th term is equal to a product of a kth term multiplied by a sum of the common ratio and 1 subtracted by a product of a (k?1)th term multiplied by the common ratio. k is an integer larger than or equal to 1.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: December 4, 2018
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Tsung-Hsuan Li, Hao-Tien Chiang, Shih-Tse Chen
  • Publication number: 20180336305
    Abstract: A method includes building a driver model in frequency domain, extracting S (scattering) parameters, the S parameters to describe a real curve that represents a real signal channel between the driver model and a load circuit, and generating, based on the extracted S parameters, an approaching curve of the real curve, the approaching curve being expressed in an approaching equation.
    Type: Application
    Filed: May 19, 2017
    Publication date: November 22, 2018
    Inventors: HUI-YU LEE, HAO-TIEN KAN
  • Publication number: 20180307339
    Abstract: Provided is a handheld electronic apparatus, a touch sensor, and a touch detection method thereof. The touch sensor includes a substrate, a strain gauge, a plurality of piezo sensors, and a touch layer. The substrate has a first surface and a second surface opposite to the first surface. The strain gauge is disposed on the first surface of the substrate. The piezo sensors are disposed on the second surface. The touch layer covers a plurality of piezo sensors and the strain gauge.
    Type: Application
    Filed: March 2, 2018
    Publication date: October 25, 2018
    Applicant: HTC Corporation
    Inventors: Chia-Chu Ho, Hao-Tien Yen, Shih-Hung Chang
  • Publication number: 20180307366
    Abstract: A handheld electronic apparatus includes a housing, a plurality of touch sensors, and a controller. The controller under power saving mode activates parts of touch sensors to execute a touch detection action.
    Type: Application
    Filed: March 2, 2018
    Publication date: October 25, 2018
    Applicant: HTC Corporation
    Inventors: Chia-Chu Ho, Hao-Tien Yen, Shih-Hung Chang
  • Patent number: 10055820
    Abstract: An image de-noising method and an apparatus thereof are disclosed, which includes categorizing a pixel in a current frame into a first low-frequency pixel having a first weight and a first high-frequency pixel having a second weight; categorizing a previous pixel corresponding to the position of the pixel in a previous frame into a second low-frequency pixel having a third weight and a second high-frequency pixel having a fourth weight; adjusting the first weight and the third weight and calculating the weighted sum of the first low-frequency pixel and the second low-frequency pixel, to generate low-frequency pixel data; adjusting the second weight and the fourth weight and calculating the weighted sum of the first high-frequency pixel and the second high-frequency pixel, to generate high-frequency pixel data; and calculating the sum of the low-frequency pixel data and the high-frequency pixel data, to output the de-noised pixel.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: August 21, 2018
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Tsung-Hsuan Li, Hao-Tien Chiang, Shih-Tse Chen
  • Publication number: 20180165407
    Abstract: A method includes providing a symbolic power distribution network (PDN) map for a PDN of an circuit design including at least a first mesh that includes a plurality of map nodes; modeling at least one parasitic component that is provided on a branch of the symbolic PDN map and a pair of current sources that are provided at two respective map nodes of the symbolic PDN map; providing a matrix equation based on an interrelated conduction behavior among the parasitic component and the pair of current sources, wherein the matrix equation includes a current source term representing the pair of current sources and an unknown variable term representing a voltage level of at least a map node of the symbolic PDN map; and based on the matrix equation, expanding the unknown variable term in a frequency-domain as a sum of plural mathematical components while keeping the current source term intact.
    Type: Application
    Filed: September 6, 2017
    Publication date: June 14, 2018
    Inventors: Hui Yu LEE, Hao-Tien KAN
  • Publication number: 20180040105
    Abstract: An image-filtering method that includes the steps outlined below is provided. Target image values and an input image having input pixel values are retrieved. A difference function between filtering response values of a desired output image and the target image values is determined, wherein the filtering response values are generated by filtering desired output pixel values of the desired output image based on characteristic filtering coefficients. An optimal solution of a desired output central pixel value of the desired output image is calculated according to a linear equation related to the characteristic filtering coefficients, wherein the optimal solution minimizes a value of the difference function. A corresponding relation between the desired output central pixel values and the input pixel values are retrieved from the optimal solution to calculate optimal filtering coefficients.
    Type: Application
    Filed: June 13, 2017
    Publication date: February 8, 2018
    Inventors: Tsung-Hsuan LI, Hao-Tien CHIANG, Shih-Tse CHEN
  • Patent number: 9830690
    Abstract: A method for wide dynamic range imaging is illustrated. A region mapping operation having steps as follows is applied to an image using a plurality of region mapping curves for compensating different luminance associated with a plurality of regions in the image. A low frequency image is obtained. A reference value for each region in the image is obtained according to the low frequency image. One region mapping curve is selected according to the reference value of the region. A gain curve is obtained according to the selected region mapping curve, a gain value of a pixel value or a luminance value of the region is obtained according to the gain curve, an adjusted gain value is obtained according to the luminance corresponding to the pixel value, and the pixel value is adjusted according to the luminance value, the gain value, and the adjusted gain value.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: November 28, 2017
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Hao-Tien Chiang, Shih-Tse Chen
  • Publication number: 20170301075
    Abstract: An image contrast enhancement method and an apparatus thereof are disclosed, which calculate the degree of influencing the clarity according to the influence feature (e.g., heavy fog, dust, smoke, or etc.) in the image, and then adjust the brightness of the pixels corresponding to features of influencing the clarity according to the degree, thereby enhancing image contrast and removing phenomenon of influencing the clarity in the image.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 19, 2017
    Inventors: Hao-Tien Chiang, Tsung-Hsuan Li, Shih-Tse Chen
  • Publication number: 20170301071
    Abstract: An image-filtering device for filtering an image that includes a pixel difference computing module, an adaptive brightness adjusting module, a weighting computing module and a filter computing module is provided. The pixel difference computing module uses any one of the pixels as a central pixel within a pixel window to compute pixel absolute differences between the central pixel and every pixels within the pixel window. The adaptive brightness adjusting module multiplies each of the pixel absolute differences with an adjusting parameter to generate adjusted pixel absolute differences. The weighting computing module generates weighting values according to the adjusted pixel absolute differences. The filter computing module performs convolution according to the pixel value of each of the pixels within the pixel window and the corresponding weighting values to generate a filtering result of the central pixel.
    Type: Application
    Filed: April 18, 2017
    Publication date: October 19, 2017
    Inventors: Hao-Tien CHIANG, Tsung-Hsuan LI, Shih-Tse CHEN
  • Patent number: 9779321
    Abstract: This invention discloses an image processing device and an image processing method. The image processing device includes a line buffer, a pixel enhancing module, a smoothing module, a noise reduction module and a contrast adjusting module. The line buffer stores a plurality of pixel values of an image. The pixel enhancing module performs an edge-enhancing operation on the image. The smoothing module filters the image to improve the image in terms of roughness. The noise reduction module filters the image to improve the image in terms of a signal-to-noise ratio. The contrast adjusting module checks whether a target pixel is on a thin edge to decide the method of adjusting the contrast of the image.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 3, 2017
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Hao-Tien Chiang, Shih-Tse Chen
  • Publication number: 20170256037
    Abstract: An image de-noising method and an apparatus thereof are disclosed, which includes categorizing a pixel in a current frame into a first low-frequency pixel having a first weight and a first high-frequency pixel having a second weight; categorizing a previous pixel corresponding to the position of the pixel in a previous frame into a second low-frequency pixel having a third weight and a second high-frequency pixel having a fourth weight; adjusting the first weight and the third weight and calculating the weighted sum of the first low-frequency pixel and the second low-frequency pixel, to generate low-frequency pixel data; adjusting the second weight and the fourth weight and calculating the weighted sum of the first high-frequency pixel and the second high-frequency pixel, to generate high-frequency pixel data; and calculating the sum of the low-frequency pixel data and the high-frequency pixel data, to output the de-noised pixel.
    Type: Application
    Filed: February 22, 2017
    Publication date: September 7, 2017
    Inventors: TSUNG-HSUAN LI, HAO-TIEN CHIANG, SHIH-TSE CHEN
  • Publication number: 20170255449
    Abstract: Provided is a fast divider including an initial parameter setting unit and an arithmetic unit. The arithmetic unit is coupled to the initial parameter setting unit that receives a divisor and a dividend, and sets a plurality of initial parameters of a sequence according to the divisor and the dividend. The plurality of initial parameters includes an initial term, a first term and a common ratio having an absolute value smaller than 1. The arithmetic unit stores a recurrence relation of the sequence and iteratively computes a quotient using the recurrence relation according to the plurality of initial parameters. The recurrence relation indicates that a (k+1)th term is equal to a product of a kth term multiplied by a sum of the common ratio and 1 subtracted by a product of a (k?1)th term multiplied by the common ratio. k is an integer larger than or equal to 1.
    Type: Application
    Filed: February 27, 2017
    Publication date: September 7, 2017
    Inventors: TSUNG-HSUAN LI, HAO-TIEN CHIANG, SHIH-TSE CHEN
  • Publication number: 20170036981
    Abstract: A process for preparing aryl ketones is disclosed. The process includes photo-oxidizing a compound of formula (V), (VI), (VII) or (VIII): in the presence of an oxidative system comprising at least one bromide compound to form aryl ketones. X1, X2, R1, R2, R3, L1, L2, L3, L4, t, n, m and p have the meanings as described in the specification and claims.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Applicant: ETERNAL MATERIALS CO., LTD.
    Inventors: Sheng-Yao HSUEH, Chih-An CHEN, You-Han LIN, Hao-Tien BAI
  • Publication number: 20160379347
    Abstract: A method for wide dynamic range imaging is illustrated. A region mapping operation having steps as follows is applied to an image using a plurality of region mapping curves for compensating different luminance associated with a plurality of regions in the image. A low frequency image is obtained. A reference value for each region in the image is obtained according to the low frequency image. One region mapping curve is selected according to the reference value of the region. A gain curve is obtained according to the selected region mapping curve, a gain value of a pixel value or a luminance value of the region is obtained according to the gain curve, an adjusted gain value is obtained according to the luminance corresponding to the pixel value, and the pixel value is adjusted according to the luminance value, the gain value, and the adjusted gain value.
    Type: Application
    Filed: April 4, 2016
    Publication date: December 29, 2016
    Inventors: Hao-Tien CHIANG, Shih-Tse CHEN
  • Publication number: 20160300326
    Abstract: This invention discloses an image processing device and an image processing method. The image processing device includes a line buffer, a pixel enhancing module, a smoothing module, a noise reduction module and a contrast adjusting module. The line buffer stores a plurality of pixel values of an image. The pixel enhancing module performs an edge-enhancing operation on the image. The smoothing module filters the image to improve the image in terms of roughness. The noise reduction module filters the image to improve the image in terms of a signal-to-noise ratio. The contrast adjusting module checks whether a target pixel is on a thin edge to decide the method of adjusting the contrast of the image.
    Type: Application
    Filed: December 16, 2015
    Publication date: October 13, 2016
    Inventors: HAO-TIEN CHIANG, SHIH-TSE CHEN
  • Patent number: 9269130
    Abstract: An image correction method arranged for processing an original image to obtain a corrected image includes steps: receiving the original image from an image sensor; regarding each pixel of the original image, calculating a horizontal distance and a vertical distance between the pixel and a reference point in the original image; determining a horizontal ratio parameter and a vertical ratio parameter according to the horizontal distance and the vertical distance between the pixel and the reference point in the original image; and performing an approximately non-linear regression calculation on the horizontal ratio parameter, the vertical ratio parameter and a coordinate of the pixel to obtain a position of the pixel in the corrected image.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: February 23, 2016
    Assignee: Realtek Semiconductor Corp.
    Inventors: Shih-Tse Chen, Hao-Tien Chiang