Patents Assigned to National Central University
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Patent number: 11911963Abstract: The present invention relates to an exchangeable additive manufacturing machine system. The system includes a manufacturing spindle; a thermal conducting module configured to include a working well in a center portion, wherein the manufacturing spindle is configured to rotate in the working well and the manufacturing spindle and the working well defines a manufacturing region; and a capillary based functional liquid releasing module configured on the thermal conducting module to release a functional liquid to one of a first gap, a second gap and a third gap included between the thermal conducting module and the manufacturing platform.Type: GrantFiled: October 19, 2022Date of Patent: February 27, 2024Assignee: National Central UniversityInventors: Chao-Yaug Liao, Bo-Ren Chen
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Patent number: 11906780Abstract: An asymmetric adiabatic polarization beam splitter integrated with a waveband filtering splitter unit and a polarization filtering splitter unit is capable of being packaged to form an integrated optical waveguide filtering chip. The waveband filtering splitter unit utilizes an adiabatic optical waveguide structure and stimulated Raman adiabatic passage on an optical waveguide to split the energy of light sources of different bands to different spaces when the light energy is performed with an adiabatic process. The polarization filtering splitter unit utilizes the two orthogonal polarization modes of an optical waveguide with birefringence to achieve a polarization-dependent mode splitting effect based on an adiabatic theory. The asymmetric adiabatic polarization beam splitter realizes the characteristics of integration and high process tolerance, and improves the mass production feasibility.Type: GrantFiled: October 26, 2021Date of Patent: February 20, 2024Assignee: National Central UniversityInventors: Hung-Pin Chung, Kuang-Hsu Huang, Tsung-Yeh Ho, I-Ting Chung, Yen-Hung Chen
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Patent number: 11893885Abstract: A method for parking detection and identification of moveable apparatus, comprising following steps of: generating a magnetic field signal containing an unique identifier for identifying the moveable apparatus by a magnetic field generator disposed in the moveable apparatus; measuring magnetic field respectively by two magnetic field sensors of a magnetic field sensing apparatus disposed in a moveable-apparatus parking place or its peripheral area, wherein a first and a second magnetic field measurements are measured; and calculating a magnetic field measurement difference for obtaining the unique identifier, wherein the magnetic field measurement difference is a magnitude of a difference of the first and the second magnetic field measurements, or a magnitude of a difference of a first magnetic field component of the first magnetic field measurement along a characteristic direction and a second magnetic field component of the second magnetic field measurement along the characteristic direction.Type: GrantFiled: June 25, 2021Date of Patent: February 6, 2024Assignee: NATIONAL CENTRAL UNIVERSITYInventor: Chien-Chih Chen
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Patent number: 11892802Abstract: A lensless holographic imaging system having a holographic optical element includes: a coherent light source for outputting a first light beam and a second light beam, wherein the first light beam irradiates a first inspection plane to form first object-diffracted light; a light modulator for modulating the second light beam into reading light having a specific wavefront; a multiplexed holographic optical element, wherein the first object-diffracted light passes through the multiplexed holographic optical element, and the reading light is input into the multiplexed holographic optical element to generate a diffracted light beam as system reference light; and an image capture device for reading at least one interference signal generated by interference between the first object-diffracted light and the system reference light. The lensless holographic imaging system has a relatively small volume and relatively high diffraction efficiency.Type: GrantFiled: October 23, 2020Date of Patent: February 6, 2024Assignee: NATIONAL CENTRAL UNIVERSITYInventors: Yeh-Wei Yu, Ching-Cherng Sun
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Publication number: 20240034979Abstract: Provided is a bioreactor apparatus including: a liquid storage chamber for storing a culture medium; a pump for providing pressure to drive the flow of the culture medium; a plurality of culture chambers providing an accommodating space to accommodate the culture medium and a cell to be cultured; and a pipeline connecting the liquid storage chamber, the pump, and the culture chamber to form a closed loop. Also provided is a bioreactor system including the bioreactor apparatus of the present disclosure, the culture medium, and a cell. Further provided is a method for culturing a cell or an organoid by the bioreactor apparatus of the present disclosure. The bioreactor apparatus, bioreactor system, and method of the present disclosure can form a biomimetic circulatory system, which is beneficial for simulating and evaluating the complex microenvironment and physiological mechanism in the living body.Type: ApplicationFiled: July 26, 2023Publication date: February 1, 2024Applicant: NATIONAL CENTRAL UNIVERSITYInventors: Ching-Yun CHEN, Feng-Huei LIN, Jui-Sheng SUN, Cherng-Jyh KE, Fu-Chiang YEH, Chun-Yi PENG, Jia-Ci JHANG, Kai-Wei LIN, Qi-Hong HONG, Yu-Syuan DING
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Publication number: 20240040933Abstract: The present invention discloses a metal-free perovskite film and metal-free perovskite piezoelectric nanogenerators comprising the film. The metal-free perovskite film is organic, lead-free and metal-free. The open-circuit voltage of the metal-free perovskite piezoelectric nanogenerators can reach 9˜16 V and the short-circuit current of the metal-free perovskite piezoelectric nanogenerators can reach 38˜55 nA. Also, the metal-free perovskite piezoelectric nanogenerators can be used as self-powered strain sensor of human-machine interface application and be adopted in in vitro electrical stimulation devices.Type: ApplicationFiled: November 29, 2022Publication date: February 1, 2024Applicants: NATIONAL CENTRAL UNIVERSITY, NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Po-Kang YANG, Meng-Lin TSAI, Han-Song WU, Shih-Min WEI, Shih-Min HUANG
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Patent number: 11875508Abstract: The disclosure provides a transmissive light based tremor identification method and a system thereof. The method includes: projecting, with a transmissive light, a first optical pattern to a part to be measured, wherein the transmissive light penetrates a surface of the part to be measured and correspondingly forms a second optical pattern on an internal structure of the part to be measured, and the second optical pattern is synthesized to include at least one intersection; capturing a plurality of images of the second optical pattern on the internal structure of the part to be measured and acquiring a motion feature of each intersection based on the images; and identifying a tremor pattern of the internal structure of the part to be measured based on the motion feature of each intersection.Type: GrantFiled: August 18, 2020Date of Patent: January 16, 2024Assignee: National Central UniversityInventor: Rong-Seng Chang
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Patent number: 11822331Abstract: The present invention relates to an environmental coverage oriented motion system. The system includes a rangefinder module configured to measure a distance in real time; an odometry module configured to measure a velocity or a position in real time; a powered vehicle carrying the rangefinder module and the odometry module; and a controller module carried by the powered vehicle, configured to receive one of the distance, the velocity and the position, performing an environmental coverage oriented motion scheme based on one of the distance, the velocity and the position to select a plurality of positions, and commanding the powered vehicle to move among the plurality of positions.Type: GrantFiled: August 14, 2020Date of Patent: November 21, 2023Assignee: National Central UniversityInventors: Kuo-Shih Tseng, Chih-Yuan Chou
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Patent number: 11764255Abstract: The present disclosure provides a memory circuit, a memory device and an operating method of the memory device. The memory device includes a storage transistor, a variable capacitance device and a control transistor. The variable capacitance device is electrically connected to the gate of the storage transistor, and the control transistor is connected to the storage transistor in series.Type: GrantFiled: April 27, 2022Date of Patent: September 19, 2023Assignee: National Central UniversityInventor: E Ray Hsieh
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Patent number: 11754749Abstract: An atmospheric turbulence detection method includes: providing a temperature difference measuring device including a thermocouple element and two sensing probes, wherein the thermocouple element has two opposite end portions, the two sensing probes are respectively disposed at the two end portions, and there is an ambient distance between the two end portions; placing the temperature difference measuring device in an atmospheric environment to generate an electromotive force by a temperature difference between the two end portions; analyzing the electromotive force to convert the electromotive force into an ambient temperature difference of an environment where the two end portions of the thermocouple element are located, an atmospheric refractive index structure constant is calculated according to the ambient temperature difference and the ambient distance, and a value of the atmospheric refractive index structure constant corresponds to an ambient disturbance of an atmospheric turbulence.Type: GrantFiled: September 3, 2021Date of Patent: September 12, 2023Assignee: National Central UniversityInventors: Sheng-Hsiang Wang, Kun-Hsu Wu, Sheng-Fu Hu
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Patent number: 11741343Abstract: A source separation method, an apparatus, and a non-transitory computer-readable medium are provided. Atrous Spatial Pyramid Pooling (ASPP) is used to reduce the number of parameters of a model and speed up computation. Conventional upsampling is replaced with a conversion between time and depth, and a receptive field preserving decoder is provided. In addition, temporal attention with dynamic convolution kernel is added, to further achieve lightweight and improve the effect of separation.Type: GrantFiled: November 27, 2019Date of Patent: August 29, 2023Assignee: National Central UniversityInventors: Jia-Ching Wang, Yao-Ting Wang
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Patent number: 11733551Abstract: An adiabatic coupling phase modulation module has an optical substrate, an asymmetric adiabatic coupling polarization beam splitter and two electro-optical phase modulators. The asymmetric adiabatic coupling polarization beam splitter performs band spatial filtering on a quantum light source signal to output a light source signal of a specific wavelength band, and performs polarization spatial filtering on the light source signal of specific wavelength band to output a first orthogonal polarization direction light source signal of the specific wavelength band and a second orthogonal polarization direction light source signal of the specific wavelength band. The two electro-optical phase modulators respectively perform phase coding processes on the first orthogonal polarization direction light source signal and the second orthogonal polarization direction light source signal.Type: GrantFiled: April 27, 2022Date of Patent: August 22, 2023Assignee: National Central UniversityInventors: Hung-Pin Chung, Kuang-Hsu Huang, Tsung-Yeh Ho, I-Ting Chung, Yen-Hung Chen
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Patent number: 11732231Abstract: The present invention relates to a composite membrane. The composite membrane includes: an elastic polymer substrate having a first surface processed by a surface modification; and a thermosensitive conductive layer formed on the first surface by performing a co-polymerization process, allowing an electrical current to pass through, and altering a hydrophilicity of a membrane surface in response to a change of a temperature.Type: GrantFiled: October 22, 2020Date of Patent: August 22, 2023Assignee: NATIONAL CENTRAL UNIVERSITYInventors: Wei-Wen Hu, Chia-Wen Tsao
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Patent number: 11663462Abstract: A machine learning method and a machine learning device are provided. The machine learning method includes: receiving an input signal and performing normalization on the input signal; transmitting the normalized input signal to a convolutional layer; and adding a sparse coding layer after the convolutional layer, wherein the sparse coding layer uses dictionary atoms to reconstruct signals on a projection of the normalized input signal passing through the convolutional layer, and the sparse coding layer receives a mini-batch input to refresh the dictionary atoms.Type: GrantFiled: July 10, 2018Date of Patent: May 30, 2023Assignee: National Central UniversityInventors: Jia-Ching Wang, Chien-Yao Wang, Chih-Hsuan Yang
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Patent number: 11656299Abstract: A near magnetic field variation detection method comprises following steps of: measuring magnetic field by a first magnetic field sensor and a second magnetic field sensor respectively; and calculating a magnetic field measurement difference, wherein the magnetic field measurement difference is (1) a magnitude of a difference of a first-magnetic-field-measurement measured by the first magnetic field sensor and a second-magnetic-field-measurement measured by the second magnetic field sensor, or (2) a magnitude of a difference of a first-magnetic-field-measurement-component measured by the first magnetic field sensor along a characteristic direction and a second-magnetic-field-measurement-component measured by the second magnetic field sensor along the characteristic direction; wherein a near magnetic field variation is occurred when (a) the magnetic field measurement difference is continuously greater than a characteristic-threshold within a characteristic-time-period, or (b) an average value of the magnetic fType: GrantFiled: October 30, 2019Date of Patent: May 23, 2023Assignee: NATIONAL CENTRAL UNIVERSITYInventor: Chien-Chih Chen
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Publication number: 20230123836Abstract: A method for slicing an ingot column is provided, including the following steps: immersing the column into a solution; rotating the column; focusing the rotating column with a focusing device; and using a laser device to cut the rotating column into sliced wafers. The slicing equipment of the present invention has a simple structure, easy operation, small kerf of the column, and fast slicing speed.Type: ApplicationFiled: December 13, 2021Publication date: April 20, 2023Applicant: National Central UniversityInventors: Chih-Kuang Lin, Jeng-Rong Ho, Pi-Cheng Tung
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Patent number: 11585055Abstract: A high efficiency traffic sign includes a retroreflective film and a diffuser film. The retroreflective film is located between the body of the traffic sign and the diffuser film so as to form an indication face. The traffic sign is located higher than a road and the indication face faces coining vehicles on the road. A projection light source module is located on one side of the road and emits a light beam toward the traffic sign and the light beam covers the indication face. The light beam passes through the diffuser film and reaches retroreflective film. The light beam is then reflected and passes through the diffuser film again, the diffuser film changes the reflective path of the light beam which passes through the diffuser film to form a diversified light beam to allow the drivers of the coining vehicles on the road to see the traffic sign clearly.Type: GrantFiled: March 21, 2022Date of Patent: February 21, 2023Assignee: NATIONAL CENTRAL UNIVERSITYInventors: Ching-Chern Sun, Sihi-Kang Lin, Chi-Shou Wu
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Patent number: 11586058Abstract: A continuously electronically controlled linear polarization rotator includes a first liquid crystal cell having a first upper substrate, a first lower substrate, and a transparent liquid crystal layer disposed between the first upper substrate and the first lower substrate; and a second liquid crystal cell having a second upper substrate, a second lower substrate, and a transparent liquid crystal layer disposed between the second upper substrate and second lower substrate. The first and second liquid crystal cells satisfy a condition that d?n/? is in a range of 1.2 to 1.8, wherein ? is a wavelength of incident light traveling through the first and second liquid crystal cells, d is thickness of the transparent liquid crystal layer, ?n is birefringence of the transparent liquid crystal layer. The first and second liquid crystal cells are applied by voltage to make a linear polarization angle of outgoing light continuously rotate.Type: GrantFiled: April 12, 2022Date of Patent: February 21, 2023Assignee: NATIONAL CENTRAL UNIVERSITYInventors: Ko-Ting Cheng, Yi-Xuan Liu, Chi-Tang Huang, Cheng-Kai Liu
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Patent number: 11574446Abstract: The present invention relates to a digital image reality aligning kit, applied to a mixed reality system integrated with a surgical navigation system including: a plurality of moveable markers corresponded to a plurality of moveable marker coordinates respectively and a part of the plurality of moveable markers configured on a surgical instrument; a positioning marker corresponded to a positioning marker coordinate and configured in proximity to a surgical area corresponded to a surgical area coordinate, when the positioning marker is settled, the relative position thereof with respect to the other part of the plurality of moveable markers and the surgical area are determined accordingly, so as to transform the surgical area coordinate to the positioning marker coordinate; and a mixed reality device corresponded to a mixed reality device coordinate and detecting the positioning marker to transform the positioning marker coordinate to the mixed reality device coordinate accordingly, so as to project a surgicalType: GrantFiled: November 21, 2019Date of Patent: February 7, 2023Assignee: NATIONAL CENTRAL UNIVERSITYInventors: Ching Shiow Tseng, Te-Hsuan Feng
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Patent number: D1015435Type: GrantFiled: October 13, 2021Date of Patent: February 20, 2024Assignee: NATIONAL CENTRAL UNIVERSITYInventors: Ching-Chi Chu, Kai-Wen Lu, Fu-Cheng Hsieh