Patents Assigned to National Chiao Tung University
  • Patent number: 10824020
    Abstract: A polarization independent optical phase modulator includes two substrates, two electrode layers, two alignment layers, and a liquid crystal layer. Each of alignment layers has first and second alignment regions each having a predetermined width in a transverse direction, which is not greater than a half of the wavelength of an incident light. In the liquid crystal layer, two adjacent ones of liquid crystal elements in the transverse direction are aligned respectively by two adjacent ones of the first and second alignment regions in two predetermined orientations which are orthogonal to each other, thereby permitting phase modulation of the incident light to be independent of the polarization of the incident light.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: November 3, 2020
    Assignee: National Chiao Tung University
    Inventors: Yi-Hsin Lin, Hung-Chun Lin
  • Patent number: 10824936
    Abstract: A recycling system and a method based on deep-learning and computer vision technology are disclosed. The system includes a trash sorting device and a trash sorting algorithm. The trash sorting device includes a trash arraying mechanism, trash sensors, a trash transfer mechanism and a controller. The trash arraying mechanism is configured to process trash in a batch manner. The controller drives the trash arraying mechanism according to the signals of trash sensors and controls the sorting gates of the trash sorting mechanism to rotate. The trash sorting algorithm makes use of the images of trash, wherein the images are taken by cameras in different directions. The trash sorting algorithm includes a dynamic object detection algorithm, an image pre-processing algorithm, an identification module and a voting and selecting algorithm. The identification module is based on the convolutional neural networks (CNNs) and may at least identify four kinds of trash.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: November 3, 2020
    Assignee: National Chiao Tung University
    Inventors: Bing-Fei Wu, Wan-Ju Tseng, Yu-Ming Chen, Bing-Jhang Wu, Yi-Chiao Wu, Meng-Liang Chung
  • Publication number: 20200344472
    Abstract: A reinforcement learning method for frame-level bit allocation is disclosed. The reinforcement learning method includes steps of: (a) at a testing time, computing a state according to a plurality of features; (b) determining an action according to a policy; (c) determining a number of bits allocated to an i-th frame in a group of pictures (GOP) according to the action, a GOP-level bit budget and the state, wherein i is a positive integer; (d) encoding the i-th frame according to the number of bits allocated to the i-th frame in the GOP; and (e) repeating the steps (a)˜(d) until an end of the GOP.
    Type: Application
    Filed: April 22, 2020
    Publication date: October 29, 2020
    Applicant: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: WEN-HSIAO PENG, YUNG-HAN HO, GUO-LUN JIN, YUN LIANG
  • Patent number: 10819348
    Abstract: A system of referenceless clock and data recovery and a frequency detector thereof has been provided. The output clock of the system initially works at the lowest frequency, the frequency of the output clock is monotonically increased in accordance with the control of the frequency detector, thereby gradually approximating a target value. The edge extraction circuit receives the data signal and the clock signal, identifies the transition edges of the signals and generates a data transition signal and a clock transition signal representing the transition edges of the data signal and the transition edges of the clock signal respectively. The edge detector then determines the data period of the data signal and the clock period of the clock signal. When the data period is smaller than half of the clock period, the edge detector generates a frequency-up signal and the frequency of the output clock is increased.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: October 27, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventor: Wei-Zen Chen
  • Patent number: 10812205
    Abstract: An antenna performance evaluation method is disclosed. The method includes the following steps: measuring plurality of throughput values of the to-be-tested antenna at the first angle under different average radiation signal-to-interference ratio (SIR). The average radiation SIR and throughput values are fitted to output the first fitted curve. The second throughput value is measured at a certain average radiation SIR of the second angle of the to-be-tested antenna. Calculating a difference value between the first throughput value and the second throughput value corresponding to the same average radiation SIR, and the difference value and the first fitting curve constitute the transition second fitting curve. Selecting different average radiation SIR is repeatedly, and measure the corresponding second throughput value, and the corresponding difference value is calculated to update the transition second fitting curve.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 20, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Ta-Sung Lee, Chia-Hung Lin, Yu-Chien Lin, Yi-Wei Chen
  • Patent number: 10810705
    Abstract: A video dehazing method includes: capturing a hazy image including multiple inputted pixels by an image capture module, calculating an atmospheric light value according to the inputted pixels by an atmospheric light estimation unit, determining a sky image area according to the inputted pixels via the intermediate calculation results of a guided filter by a sky detection unit; calculating a dark channel image according to the inputted pixels based on dark channel prior (DCP) by a dark channel prior unit; calculating a fine transmission image according to the inputted pixels, the atmospheric light value, the sky image area and the dark channel image via a guided filter by a transmission estimation unit, generating a dehazing image according to the inputted pixels, the atmospheric light value and the fine transmission image by an image dehazing unit, and outputting the dehazing image by a video outputting module.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: October 20, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Jiun-In Guo, Cheng-Yen Lin
  • Patent number: 10806403
    Abstract: An adaptive controller used in a photoplethysmography sensing system, comprises a plurality of hardware circuits which are configured to: receive a photoplethysmography signal (hereinafter, “PPG signal”) processed; determine whether the PPG signal processed satisfies with a requirement; output the PPG signal processed if the PPG signal processed satisfies with a requirement; and adjust a gain of an amplifier for amplifying the PPG signal and/or a driving signal of a light source if the PPG signal processed does not satisfy with a requirement.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: October 20, 2020
    Assignee: National Chiao Tung University
    Inventors: Paul C. P. Chao, Tse-Yi Tu, Bo-Wei Pan, Yan-Hwa Wu
  • Publication number: 20200328287
    Abstract: A semiconductor device includes a channel, source/drain structures, and a gate stack. The source/drain structures are on opposite sides of the channel. The gate stack is over the channel, and the gate stack includes a gate dielectric layer, a doped ferroelectric layer, and a gate electrode. The gate dielectric layer is over the channel. The doped ferroelectric layer is over the gate dielectric layer. The gate electrode is over the doped ferroelectric layer. A dopant concentration of the doped ferroelectric layer varies in a direction from the gate electrode toward the channel.
    Type: Application
    Filed: April 13, 2019
    Publication date: October 15, 2020
    Applicants: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Pin-Shiang CHEN, Sheng-Ting FAN, Chee-Wee LIU
  • Patent number: 10804071
    Abstract: An electron microscope specimen includes a first electron-transport layer, a second electron-transport layer, a spacer layer, and a carrier layer. The second electron-transport layer has a first opening, a second opening, and a viewing area, wherein the viewing area is between the first opening and the second opening. The spacer layer is sandwiched between the first electron-transport layer and the second electron-transport layer, and the spacer layer has an accommodating space communicating with the first opening and the second opening. The carrier layer is disposed on the second electron-transport layer, and has a viewing window, a first injection hole, and a second injection hole, wherein the viewing window is substantially aligned with the viewing area and the accommodating space, and the first injection hole and the second injection hole respectively communicate with the first opening and the second opening.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: October 13, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Wen-Wei Wu, Wei-Huan Tsai, Jui-Yuan Chen, Cheng-Lun Hsin
  • Patent number: 10803654
    Abstract: The invention is related to a method of three-dimensional face reconstruction by inputting a single face image to reconstruct a three-dimensional face model, therefore, the human face image is seen at various angles of three-dimensional face through rotating the model images.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: October 13, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Bing-Fei Wu, Chun-Hsien Lin, Yi-Chiao Wu, Bing-Jhang Wu, Chih-Cheng Huang, Meng-Liang Chung
  • Patent number: 10802374
    Abstract: A liquid crystal lens includes at least two liquid crystal cells, and at least two electrode layer units. Each of the liquid crystal cells has a central portion, a first surrounding portion, and a second surrounding portion. Each of the electrode layer units is disposed to supply voltage to the respective liquid crystal cell to permit one of the liquid crystal cells to have a first radial gradient of refractive index in the central portion thereof, and to permit the other one of the liquid crystal cells to have a second radial gradient of refractive index in the first surrounding portion thereof, to thereby allow the two liquid crystal cells to cooperatively define an aperture of the liquid crystal lens.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 13, 2020
    Assignee: National Chiao Tung University
    Inventors: Yu-Jen Wang, Yi-Hsin Lin
  • Patent number: 10792255
    Abstract: The present invention provides a method for preparing a reconstituted apolipoprotein B lipoparticle and the method comprises steps of (a) dissolving an apolipoprotein B and a lipid in a first buffer containing 2 M to 8 M urea and 1 wt % to 15 wt % amphiphilic compounds to form a mixture; and (b) dialyzing the mixture against a second buffer containing 0 M to 2M urea and 0 wt % to 0.5 wt % amphiphilic compounds for 1 to several times for lowering concentrations of the urea and the amphiphilic compounds in the mixture. The present invention further provides an apolipoprotein B lipoparticle and a use for the production of an apolipoprotein B lipoparticle used for delivering a hydrophobic substance.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: October 6, 2020
    Assignee: National Chiao Tung University
    Inventors: Chia-Ching Chang, Gong-Shen Chen, Tsai-Mu Cheng, Hsueh-Liang Chu
  • Patent number: 10796965
    Abstract: A method for forming a nanodevice sensing chip includes forming nanodevices having a sensing region capable of producing localized Joule heating. Individual nanodevice is electrical-biased in a chemical vapor deposition (CVD) system or an atomic layer deposition (ALD) system enabling the sensing region of the nanodevice produce localized Joule heating and depositing sensing material only on this sensing region. A sensing chip is formed via nanodevices with sensing region of each nanodevice deposited various materials separately. The sensing chip is also functioned under device Joule self-heating to interact and detect the specific molecules.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: October 6, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Ru-Zheng Lin, Jeng-Tzong Sheu
  • Patent number: 10779739
    Abstract: The present invention provides a contactless-type sport training monitor method, comprising: selecting at least an image database to recognize a plurality of expressions in the image database; making pre-processing for the plurality of expressions: using a convolutional neural network as a feature point extraction model; acquiring a human image; tracking a first target region and a second target region in the human image; making chrominance-based rPPG trace extraction; using the deep level model to compare the second target region image; and to calculate a post-exercise heart rate recovery achievement ratio, to judge the Rating of Perceived Exertion, and judging whether the human body is under overtraining status or not.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: September 22, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Bing-Fei Wu, Chun-Hsien Lin, Po-Wei Huang, Tzu-Min Lin, Meng-Liang Chung
  • Patent number: 10776614
    Abstract: A facial expression recognition training system includes a training module, feature database, a capturing module, a recognition module and an adjusting module. The training module trains a facial expression feature capturing model according to known face images. The feature database stores known facial expression features of the known face images. The capturing module continuously captures first face images, and the facial expression feature capturing model outputs facial expression features of the first face images according to the first face images. The recognition module compares the facial expression features and the known facial expression features, and fit the facial expression features to the first known facial expression features that is one kind of the known facial expression feature accordingly. The adjusting module adjusts the facial expression feature capturing model to reduce the differences between the facial expression features and the known facial expression features.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: September 15, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Bing-Fei Wu, Chun-Hsien Lin, Meng-Liang Chung
  • Patent number: 10775237
    Abstract: Disclosed is a resonant wavelength measurement apparatus, including a light source and a measurement unit. The measurement unit has a guided-mode resonance filter and a photosensitive element. The guided-mode resonance filter has a plurality of resonant areas, and each resonant area has a different filtering characteristic, to receive first light in the light source transmitted by a sensor or receive second light in the light source reflected by the sensor. The first light has a first corresponding pixel on the photosensitive element, the second light has a second corresponding pixel on the photosensitive element, and the first corresponding pixel and the second corresponding pixel correspond to a same resonant wavelength.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: September 15, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Cheng-Sheng Huang, Chih-Wei Chang, Shi-Ting Chen
  • Patent number: 10778204
    Abstract: A comparator circuit with low power consumption and low kickback noise includes a first dynamic comparator and a second dynamic comparator. The first dynamic comparator is a pre-amplifier for the second dynamic comparator. An enable switch which is connected to the first dynamic comparator has a control terminal connected to a resistance device. The resistance device and the enable switch form a RC delay circuit to reduce the kickback noise of the comparator circuit. Since the comparator circuit is composed of dynamic comparators, the power consumption of the comparator circuit is lower.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: September 15, 2020
    Assignee: National Chiao Tung University
    Inventors: Shih-Hsing Wang, Chung-Chih Hung
  • Patent number: 10775303
    Abstract: A biological signal analyzing device configured to generate a first detection image or a second detection image is provided. The biological signal analyzing device includes a light-incident surface, a light-emitting surface and a plurality of optical-resonance structures. The sample is placed near the light incident surface, and receives a first light through the sample. The light resonance structures are configured to process the first light and generate a second and third light. The second light emits from the light emitting surface, and adapted to form the first detection image corresponding to the sample, and the third light emits from the light incident surface, and adapted to form the second detection image corresponding to the sample. The optical resonance structures vary their thickness along the first direction or vary the width along the second direction. A biological sensing apparatus, a sensing method and a fabrication method are also provided.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 15, 2020
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Cheng-Sheng Huang, Chan-Te Hsiung, Yen-Chieh Wang
  • Patent number: 10768614
    Abstract: The present disclosure illustrates a robot speech control system including a robot body, a handheld device, a command receiver, an ambient sensor, a processor and a controller. The handheld device includes a display interface and a speech input interface, and the speech input interface is configured to input a speech command which is then converted, by a speech recognition program, into a speech control instruction. An auto-dodge program converts the information into an auto-dodge instruction. The processor receives the speech control instruction and the information associated with the environment, and use Bayesian regression algorithm to calculate a free space probability, so as to obtain weights of a speech command and a dodge command. The processor integrates the speech control instruction and the weight of the speech command, and the auto-dodge instruction and the weight of the dodge command, to generate a movement control instruction.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: September 8, 2020
    Assignee: National Chiao Tung University
    Inventors: Kai-Tai Song, Yao-Hsang Chen
  • Patent number: 10770617
    Abstract: A light emitting diode device with flip-chip structure includes a transparent protective substrate, a transparent conductor layer, a glue layer, a group III-V stack layer, a first conductivity metal electrode, a second conductivity metal electrode and an insulating layer. The transparent conductor layer is formed on the transparent protective substrate. The glue layer bonds the transparent protective substrate and the transparent conductor layer. The group III-V stack layer and the first conductivity metal electrode are respectively formed on a first portion and a second portion of the transparent conductor layer. The second conductivity metal electrode is formed on a portion of the group III-V stack layer. The insulating layer covers exposed portions of the transparent conductor layer and the group III-V stack layer, and the insulating layer further covers portions of the first and second conductivity metal electrodes, so as to expose the first and second conductivity metal electrodes.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: September 8, 2020
    Assignee: National Chiao Tung University
    Inventors: Ray-Hua Horng, Ken-Yen Chen, Huan-Yu Chien