Patents by Inventor Tze An Liu
Tze An Liu 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: 11927785Abstract: There is provided a holographic optical element including: a hologram portion including a plurality of groups of unit regions, each group of unit regions of the hologram portion being configured to produce a respective holographic image under a respective light illumination having a respective predetermined wavelength; and a colour filter portion formed on the hologram portion, the colour filter portion including a plurality of groups of unit regions, each group of unit regions of the colour filter portion being arranged on a corresponding group of the plurality of groups of unit regions of the hologram portion, whereby the plurality of groups of unit regions of the colour filter portion is spatially arranged to form a predetermined colour image. There is also provided a method of forming the holographic optical element. There is further provided an article having optical security incorporated therein.Type: GrantFiled: April 15, 2019Date of Patent: March 12, 2024Assignee: SINGAPORE UNIVERSITY OF TECHNOLOGY AND DESIGNInventors: Tze Peng Kevin Lim, Kwang Wei Joel Yang, Hailong Liu
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Publication number: 20230333168Abstract: A method and a device for battery detection are provided. In the method, multiple characteristic values measured from a battery during operation of the battery are captured via a data capturing device to form a characteristic curve. Curve fitting is performed on the characteristic curve to obtain a curve error. According to the magnitude of the curve error, it is determined whether the battery is normal. When the determination result is abnormal, a step-curvature radius analysis is performed on the characteristic curve to determine whether the battery is normal.Type: ApplicationFiled: January 11, 2023Publication date: October 19, 2023Applicant: Industrial Technology Research InstituteInventors: Teng-Chun Wu, Yean-San Long, Cho-Fan Hsieh, Min-An Tsai, Hsiu-Ming Chang, Feng-Ming Chuang, Tze-An Liu
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Patent number: 10101451Abstract: In an embodiment, a distance measuring device comprises an absolute distance measuring module, a tracking module, a two-axis rotating mechanism and a signal controlling and processing module to track an object and measure a distance between the distance measuring device and the object. The absolute distance measuring module measures an absolute distance between the distance measuring device and the object. The absolute distance measuring module and the tracking module are combined by using a dichroic beam splitter, and then all of them are further disposed in the two-axis rotating mechanism. When the object moves, a tracking optical path changes accordingly. A quadrant photodetector of the absolute distance measuring module detects the changes to avoid the distance measuring optical path being interrupted, and generates and transmits the signal to the signal controlling and processing module for controlling the two-axis rotating mechanism to rotate, thereby tracking the object.Type: GrantFiled: November 23, 2016Date of Patent: October 16, 2018Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tze-An Liu, Hau-Wei Lee, Huay-Chung Liou, Shan-Peng Pan, Po-Er Hsu
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Publication number: 20170329009Abstract: In an embodiment, a distance measuring device comprises an absolute distance measuring module, a tracking module, a two-axis rotating mechanism and a signal controlling and processing module to track an object and measure a distance between the distance measuring device and the object. The absolute distance measuring module measures an absolute distance between the distance measuring device and the object. The absolute distance measuring module and the tracking module are combined by using a dichroic beam splitter, and then all of them are further disposed in the two-axis rotating mechanism. When the object moves, a tracking optical path changes accordingly. A quadrant photodetector of the absolute distance measuring module detects the changes to avoid the distance measuring optical path being interrupted, and generates and transmits the signal to the signal controlling and processing module for controlling the two-axis rotating mechanism to rotate, thereby tracking the object.Type: ApplicationFiled: November 23, 2016Publication date: November 16, 2017Inventors: Tze-An Liu, Hau-Wei Lee, Huay-Chung Liou, Shan-Peng Pan, Po-Er Hsu
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Patent number: 9774551Abstract: A user device, a cloud server and a share link identification method thereof are provided. The cloud server executes a resource management program to generate a share link associated with a shared resource and a piece of identity information of the share link. When a communication message in a communication program running in the user device includes the share link, a plugin program running in the user device crawls the identity information of the share link from the cloud server according to the share link, and presents the identity information in a graphical user interface of the communication program.Type: GrantFiled: December 7, 2014Date of Patent: September 26, 2017Assignee: Institute For Information IndustryInventors: Yu-Lin Jeng, Shin Tze Liu
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Patent number: 9479253Abstract: An optical communication device and an optical communication method are provided. The optical communication device includes a laser source, an optical amplifier, and an optical signal generating chip. The laser source generates a laser beam. The optical amplifier is coupled to the laser source and amplifies light intensity of the laser beam in a specific wavelength band. The optical signal generating chip includes a micro-resonator and a modulation module. The micro-resonator is coupled to the optical amplifier and generates a multi-wavelength frequency comb according to the amplified laser beam. The modulation module is coupled to the micro-resonator and modulates a communication signal set to generate a plurality of optical modulated signals according to the multi-wavelength frequency comb.Type: GrantFiled: December 29, 2014Date of Patent: October 25, 2016Assignee: Industrial Technology Research InstituteInventors: Tze-An Liu, Po-Er Hsu, Hsin-Feng Chen
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Publication number: 20160156576Abstract: A user device, a cloud server and a share link identification method thereof are provided. The cloud server executes a resource management program to generate a share link associated with a shared resource and a piece of identity information of the share link. When a communication message in a communication program running in the user device includes the share link, a plugin program running in the user device crawls the identity information of the share link from the cloud server according to the share link, and presents the identity information in a graphical user interface of the communication program.Type: ApplicationFiled: December 7, 2014Publication date: June 2, 2016Inventors: Yu-Lin JENG, Shin Tze LIU
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Publication number: 20160087724Abstract: An optical communication device and an optical communication method are provided. The optical communication device includes a laser source, an optical amplifier, and an optical signal generating chip. The laser source generates a laser beam. The optical amplifier is coupled to the laser source and amplifies light intensity of the laser beam in a specific wavelength band. The optical signal generating chip includes a micro-resonator and a modulation module. The micro-resonator is coupled to the optical amplifier and generates a multi-wavelength frequency comb according to the amplified laser beam. The modulation module is coupled to the micro-resonator and modulates a communication signal set to generate a plurality of optical modulated signals according to the multi-wavelength frequency comb.Type: ApplicationFiled: December 29, 2014Publication date: March 24, 2016Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tze-An Liu, Po-Er Hsu, Hsin-Feng Chen
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Publication number: 20130077084Abstract: An object characteristic measuring system, used to measure semiconductor thin film characteristics, is formed by a dual-optical comb absolute distance measuring device and a terahertz (THz) wave time-domain measuring device. The dual-optical comb absolute distance measuring device is formed by two laser modules, for determining a first characteristic of an object to be measured through laser pulses emitted by the two laser modules. The THz wave time-domain measuring device is used to emit a THz wave, so as to measure a second characteristic of the object to be measured.Type: ApplicationFiled: January 27, 2012Publication date: March 28, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventor: Tze-An LIU
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Publication number: 20130070242Abstract: A system for laser-induced breakdown spectroscopy (LIBS) is provided. The system for the LIBS includes a laser module generating a first pulse laser and a second pulse laser. An optical delay device incident by the second pulse laser is used to increase an optical path of the second pulse laser. A Kerr medium incident by the second pulse laser generates a time gate, and allows a plasma light beam generated from a sample incident by the first pulse laser, passing through the time gate and being output at a time point. A detection device receives and measures the plasma light beam output at the time point to generate a signal. A processing module connected to the detection device detects a signal, and compares the signal with a data base to obtain information concerning a composition and element concentrations of the sample.Type: ApplicationFiled: December 2, 2011Publication date: March 21, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tze-An Liu, Chen-Wei Chen, Yu-Tai Li, Chen-Hsiu Liu
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Patent number: 7830526Abstract: A method and an apparatus for optical frequency measurement, using one or two frequency-stabilized mode-locked laser combs operating at different repetition rates to mix with a laser under measurement (LUM) respectively so as to generate two beat frequencies. The ordinal comb number where the beat frequency is generated is determined by measuring the ordinal comb number difference where the two beat frequencies are generated at different repetition rates so as to obtain the frequency of the LUM. The ordinal comb number difference is measured by using a dispersion device to offer an approximate ordinal comb number or by operating a mode-locked laser at three different repetition rates.Type: GrantFiled: January 17, 2008Date of Patent: November 9, 2010Assignee: Industrial Technology Research InstituteInventors: Jin-Long Peng, Tze-An Liu, Ren-Huei Shu
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Publication number: 20100251302Abstract: A method of showing a TV channel menu includes the following steps. Firstly, an audience evaluation data including a first audience rating of a first TV program and a second audience rating of a second TV program is received. Then, the TV channel menu is opened. Afterwards, the TV channel menu including a first displaying block corresponding to the first TV program and a second displaying block corresponding to the second TV program is shown on a screen. If the first audience rating is higher than the second audience rating, the first display block has a higher conspicuous degree than the second displaying block.Type: ApplicationFiled: July 2, 2009Publication date: September 30, 2010Applicant: AVERMEDIA TECHNOLOGIES, INC.Inventors: Chia-Chen Chao, Wen-Kang Chen, Chiao-Yung Chang, Meng-Tze Liu
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Publication number: 20100138838Abstract: A scheduled task executing method is used in a computer system and a peripheral device. The computer system has a time generator for generating time information and a memory. When the computer system is in a working state, a user input interface is provided, a scheduled time is set via the user input interface, and the scheduled time is automatically stored in the memory. When the computer system is in a power off state, electricity is continuously supplied to the time generator and the memory. If the time information and the scheduled time comply with a specified relation, a power control signal is generated. In response to the power control signal, the computer is switched from the power off state to the working state. When the computer system is in the working status, the peripheral device is activated to execute a scheduled task item corresponding to the scheduled time.Type: ApplicationFiled: March 11, 2009Publication date: June 3, 2010Applicant: AVerMedia TECHNOLOGIES, INC.Inventors: Sheng-Chang Lin, Meng-Tze Liu
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Publication number: 20090136198Abstract: A video reproducing/recording and playing system and a method thereof for setting and playing video sections are provided. The system includes a host computer with a data buffer and a database, a video module, and a monitor. While continuously receiving video signals, the video module sets a first section index when a scene difference between a first frame and a second frame represented by a portion of the video signals is greater than a predetermined scene difference wherein the first section index points to a start time of the second frame. Then, the video module stores the first section index and stores the video signals corresponding to the second frame into the data buffer. After retrieving the first section index, the monitor presents the video signals from the second frame points by the first section index.Type: ApplicationFiled: July 22, 2008Publication date: May 28, 2009Applicant: AVERMEDIA TECHNOLOGIES, INC.Inventors: Chung-Jen Chen, Meng-Tze Liu, Hung-Shen Su
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Publication number: 20090097035Abstract: A method and an apparatus for optical frequency measurement, using one or two frequency-stabilized mode-locked laser combs operating at different repetition rates to mix with a laser under measurement (LUM) respectively so as to generate two beat frequencies. The ordinal comb number where the beat frequency is generated is determined by measuring the ordinal comb number difference where the two beat frequencies are generated at different repetition rates so as to obtain the frequency of the LUM. The ordinal comb number difference is measured by using a dispersion device to offer an approximate ordinal comb number or by operating a mode-locked laser at three different repetition rates.Type: ApplicationFiled: January 17, 2008Publication date: April 16, 2009Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: JIN-LONG PENG, TZE-AN LIU, REN-HUEI SHU
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Patent number: 7307258Abstract: A system for detecting the burn degree of skin includes a laser source for generating laser light, a light-splitting device for splitting the laser light into a pump beam and a probe beam, a modulation device positioned on the optical path of the pump beam, a sampling device positioned between the light-splitting device and the modulation device, a terahertz pulse emitter for generating terahertz pulses by irradiating of the pump beam, a terahertz pulse detector for detecting the terahertz pulse reflected by a sample, a current detector electrically connected to the terahertz pulse detector, and a phase lock-in amplifier electrically connected to the current detector. The terahertz pulse emitter includes a plurality of photoconductive antennas positioned in an array manner, and the system further includes a first fiber coupler for transmitting the pump beam from the modulation device to the photoconductive antennas of the terahertz pulse emitter.Type: GrantFiled: October 26, 2005Date of Patent: December 11, 2007Assignee: Oki Electric Industry Co., Ltd.Inventors: Teh Ho Tao, Tze An Liu, Zu Sho Chow, Sheng Lung Wu, Ci Ling Pan
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Publication number: 20070253682Abstract: In a signal pickup method for a video recording and playing system, a signal is continuously received and stored in a data buffer of the video recording and playing system. Then, in response to an operation of a control device of the video recording and playing system, a pickup start point and a pickup end point are determined, thereby locating a first data address corresponding to the pickup start point and a second data address corresponding to the pickup end point in the data buffer. Afterward, the data between the first data address and the second data address are saved into a new file.Type: ApplicationFiled: December 8, 2006Publication date: November 1, 2007Applicant: AVERMEDIA TECHNOLOGIES, INC.Inventors: Shih-Ming Chang, Meng-Tze Liu
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Publication number: 20070154182Abstract: In a signal pickup method of a video/audio recording and playing system, a recording length and a tracing-back length are preset. An external signal is received and storing into a buffer of the video/audio recording and playing system. A designated section of the external signal is automatically picked up from the buffer according to the recording length and the tracing-back length in response to a triggering operation of a user.Type: ApplicationFiled: January 17, 2006Publication date: July 5, 2007Inventors: Chung-Song Kuo, Shih-Ming Chang, Meng-Tze Liu, Jiun-Kuei Jung, Fu-Sheng Chu
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Publication number: 20060217601Abstract: A system for detecting the burn degree of skin comprises a laser source for generating a laser, a light-splitting device for splitting the laser into a pump beam and a probe beam, a modulation device positioned on the optical path of the pump beam, a sampling device positioned between the light-splitting device and the modulation device, a terahertz pulse emitter for generating terahertz pulses by the irradiating of the pump beam, a terahertz pulse detector for detecting the terahertz pulse reflected by a sample, a current detector electrically connected to the terahertz pulse detector, and a phase lock-in amplifier electrically connected to the current detector. The terahertz pulse emitter includes a plurality of photoconductive antennas positioned in an array manner, and the system further comprises a first fiber coupler for transmitting the pump beam from the modulation device to the photoconductive antennas of the terahertz pulse emitter.Type: ApplicationFiled: October 26, 2005Publication date: September 28, 2006Inventors: Teh Tao, Tze Liu, Zu Chow, Sheng Wu, Ci Pan
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Patent number: D428134Type: GrantFiled: December 21, 1999Date of Patent: July 11, 2000Assignee: Pan Air Electric Co., Ltd.Inventor: Chen-Tze Liu