Patents Assigned to Chung Yuan Christian University
  • Patent number: 7663126
    Abstract: An ion implantation system and method of monitoring implant energy of an ion implantation device. The ion implantation system includes an ion implantation device and a monitoring device. The ion implantation device generates a plurality of charged particles and accelerates them with an accelerating voltage for ion implantation. The monitoring device performs spectroscopic analysis of the charged particles to obtain the real accelerating voltage. Thus, implant energy output by the ion implantation device can be calibrated.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: February 16, 2010
    Assignee: Chung Yuan Christian University
    Inventor: Szetsen Steven Lee
  • Patent number: 7646322
    Abstract: A folded R-2R ladder current-steering digital-to-analog converter is disclosed. In the folded R-2R ladder current-steering digital-to-analog converter, each node in the R-2R ladder is electrically coupled with a plurality of current sources with different weights. Therefore, the numbers of the resisters and current sources can be reduced, and efficient power saving and the high-speed operation can be achieved.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: January 12, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Nan-Ku Lu, Chun-Chieh Chen, Kai-Yao Lin, Yi-Zhi Zeng
  • Patent number: 7638157
    Abstract: A method of fabricating an electrode assembly of a sensor is described. The sensor has a field effect transistor. The electrode assembly is separated from the field effect transistor by only a conductive line. The sensor is functioned to detect different glucose concentrations. A solid layer of tin oxide is deposited on a substrate board. A ?-D-glucose oxidase and polyvinyl alcohol bearing styrylpyridinium groups are placed in 100 ?l of sulfuric acid, to form an enzyme mixture. The enzyme mixture is dropped on the solid layer of tin oxide. The enzyme mixture is dried. The enzyme mixture is exposed to a UV ray. The enzyme mixture is dried and stabilized. The enzyme mixture is immersed in a sulfuric buffer.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: December 29, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Wen-Yaw Chung, Li-Te Yin, Chung-We Pan
  • Publication number: 20090294284
    Abstract: A reference electrode is disclosed. The reference electrode is developed by spreading an aqueous KCl gelling agar solid gel/poly(vinyl chloride)carboxylated (PVC—COOH) double layer on a screen-printing Ag/AgCl electrode body. Such polymer double layer can maintain ion concentration and keep stable chemical capacitance potential during measurement. The reference electrode of the present invention provides fast response time and high stability for major ions detection measurements in a wide range.
    Type: Application
    Filed: May 28, 2008
    Publication date: December 3, 2009
    Applicant: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Nien-Hsuan Chou, Tza-Wei Huang
  • Patent number: 7625498
    Abstract: The invention provides liquid crystal composites including a liquid crystal with a layered inorganic material and a photosensitive polymer dispersed therein. The layered inorganic layer reduces threshold voltage and enhances grating diffraction efficiency of the liquid crystal. The invention also provides a liquid crystal with a layered inorganic material dispersed in the liquid crystal, and a modified layered material MgAl—K2 LDH.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: December 1, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Tsung-Yen Tsai, Yuan-Pin Huang, Shau-Wen Lu, Yun-Min Chang
  • Patent number: 7612516
    Abstract: This invention discloses a method and system for measuring a CNC machine. The system comprises a platform, a driving module, a set of optical scales, and a detection module. The platform is driven by the driving module. In addition, the driving module further comprises a set of encoders. As the driving module drives the platform to move to a position by a first displacement, the encoders indicate the first displacement. The optical scales indicate a second displacement by which the platform is driven by the driving module. The detection module detects the difference between the first displacement and the second displacement.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: November 3, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Jr-Hau Chen, Jung-Ji Wang
  • Patent number: 7588885
    Abstract: The present invention relates to use of bicistronic DNA constructs for identifying compounds that inhibits IRES-dependent translation activity of an infectious enterovirus (EV) or encephalomyocarditis virus (EMCV) without affecting CAP-dependent translation activity of a host subject. The compounds thus identified are useful in preparation of a medicament for treating EV or EMCV infection.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: September 15, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Tzong-Yuan Wu, Shin-Jhan Zeng, Ying-Ju Chen, Tsu-An Hsu, Shin-Ru Shih, Suey-Sheng Kao, Tzyy-Rong Jinn
  • Patent number: 7576933
    Abstract: This invention provides a system and a method of the optical delay line, wherein the system comprises a source and an array of mirrors, wherein the array of mirrors comprises a first reflective mirror, a second reflective mirror, a third reflective mirror, and a fourth reflective mirror. Beams from the source could be delayed because the beams are multi-reflected by the reflective mirrors.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: August 18, 2009
    Assignee: Chung Yuan Christian University
    Inventors: I-Jen Hsu, Chia-Yun Kao, Cheng-Chung Lai, Chao-Ming Chang, Ti-Kuang Hou
  • Publication number: 20090190077
    Abstract: A bistable SmA liquid-crystal display is disclosed. A striped electrode pattern is coated on one of two substrates and an ITO film is coated on the other to switch the director of SmA liquid crystals between the homeotropic and planar states by applying a vertical electric field across the cell thickness and a horizontal electric field via the striped electrodes, respectively.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 30, 2009
    Applicant: Chung Yuan Christian University
    Inventor: WEI LEE
  • Patent number: 7550681
    Abstract: This invention discloses a method and apparatus for measuring the weight of a CNC workpiece. As the weight of the workpiece on a loading platform increases, the loading of a driving module which drives the loading platform in constant speed increases accordingly. On the contrary, as the weight of the workpiece on the loading platform decreases, the loading of the driving module which drives the loading platform in constant speed also decreases. This invention determines the weight of the workpiece on the loading platform by measuring the electrical signal which drives the driving module and utilizing a calibration curve data in a preconfigured database.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: June 23, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Ming-Hua Li
  • Patent number: 7540697
    Abstract: A computer assisted detecting and restraining system for cutting tool chatter. The system comprises a network monitor system, a signal extraction system, a chatter detection system, and a chatter restraint system. The network monitor system monitors a machine tool and receives audio caused during a cutting process. The signal extraction system extracts vibration displacement signals generated during the cutting process converts the vibration displacement signals to digital signals and transfers the digitalized signals. The chatter detection system receives the digitalized vibration displacement signals and sends a control command when the signals are high frequency signals. The chatter restraint system receives the control command and adjusts rotation rates of a spindle of the machine tool accordingly.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: June 2, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Hsiang-Yung Hsieh
  • Patent number: 7496865
    Abstract: Nth-order OTA-C (Operational Transconductance Amplifiers and Capacitors) filter structures are realized by using the analytical synthesis method to achieve the following three important criteria simultaneously: filters use just n grounded capacitors, each of which is located at each of just n nodes in the realized circuit, because they use smaller area in the IC, and they can absorb equivalent shunt capacitive parasites; filters employ only single-ended-input OTAs to overcome the feed-through effects due to finite input parasitic capacitances associated with double-input OTAs to replace the same positions of the n given capacitors; and filters have the least number-of components (passive and active) for a given order to reduce power consumption, chip areas, and noise. Both the first and the second criteria lead to the minimum parasitic distortion and make the most precise output signals. And the third criterion produces the cheapest chip.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: February 24, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Chun-Ming Chang, Shu-Hui Tu
  • Patent number: 7475766
    Abstract: The present invention provides a multi-purpose transportation system, including: a carrying platform including a gap path; a conveying module located underneath the carrying platform and extending along the gap path; and a carrying device coupled through the gap path onto the conveying module via a conveying base, wherein the carrying device further includes a control unit for controlling the moving direction of the conveying module.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: January 13, 2009
    Assignee: Chung Yuan Christian University
    Inventor: Kwun-Mao Ho
  • Patent number: 7459082
    Abstract: The present invention discloses a feed spacer, comprising a first layer and a second layer, for spiral-wound membrane module. The first layer consists of a plurality of first filaments, which are substantially in parallel to one another. Furthermore, the second layer also consists of a plurality of second filaments, which are substantially in parallel to one another. Moreover, the first layer is attached to the second layer, and the first filaments are disposed at an angle to the second filaments. Both the first layer and the second layer bend to the center of the spiral-wound. Additionally, the distance from the inside of the first layer to the center is bigger than that from the inside of the second layer to the center, and the diameter of the first filament is smaller than that of the second filament.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: December 2, 2008
    Assignee: Chung Yuan Christian University
    Inventors: Kuo-Lun Tung, Yu-Ling Li, Ming-Yang Lu, Juin-Yih Lai
  • Patent number: 7452491
    Abstract: The present invention discloses a method for forming scaffolds. This invention provides various fixation agents for different polymers or applications, and a fixation process is performed at low temperature. Moreover, the method comprises a dissolution process, a temperature adjusting process, a freezing process and a fixation process, wherein the fixation process is selected from the group of a solid-liquid exchange process, a neutralization process and a gelation process.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: November 18, 2008
    Assignee: Chung Yuan Christian University
    Inventors: Juin Yih Lai, Ming-Hau Ho, Pei Yun Kuo, Hsyue-Jen Hsieh, Tzu-Yang Hsien, Da Ming Wang, Lein Tuan Hou
  • Patent number: 7435610
    Abstract: A method for fabricating an array pH sensor and a readout circuit device of such array pH sensor are implemented by utilizing an extended ion sensitive field effect transistor to construct the array pH sensor and related readout circuit. The structure of the array sensor having this extended ion sensitive field effect transistor comprises a tin dioxide/metal/silicon dioxide multi-layer structure sensor and a tin dioxide/indium tin oxide/glass multi-layer structure sensor and has excellent properties. Furthermore, the readout circuit and the sensor utilize two signal generators for controlling and reading signals. In particular, the sensor can be effective for increasing the accuracy of measurement and reducing the interference of noise.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: October 14, 2008
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Chung-We Pan, Jing-Sheng Chiang
  • Patent number: 7416761
    Abstract: The present invention discloses discloses a composite PTFE membrane comprising an expanded PTFE membrane as substrate and a sintered porous PTFE membrane on top of it. The porous PTFE membrane on top has porous structure with interconnected channels formed with a sintering process that fuses the PTFE fine powders coated on the ePTFE membrane. Furthermore, the present invention discloses a method for forming the composite PTFE membrane.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: August 26, 2008
    Assignee: Chung Yuan Christian University
    Inventors: Da-Ming Wang, Kueir-Rarn Lee, Juin-Yih Lai, Tien-Hsiang Hsueh, Yung-Hsin Lee, Chia-Hao Lo
  • Patent number: 7381017
    Abstract: A detecting and suppressing control method for milling tool chatter. Milling parameters are defined. A milling device is initiated using the milling parameters. Milling signals are extracted using a sensor installed on the milling device. It is determined whether chatter relating to the milling device occurs, comprising determining whether the milling signals are high frequency signals, and, if the milling signals are high frequency signals, determining whether signal points generated based on the milling signals are located in a stable area derived using a sliding function. When the signal points are located in the stable area, the milling signals are stable milling signals. When the signal points are located outside the stable area, rotational rates of a spindle of the milling device are adjusted.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: June 3, 2008
    Assignee: Chung Yuan Christian University
    Inventors: Shih-Ming Wang, Hsiang-Yung Hsieh
  • Patent number: 7374604
    Abstract: The present invention discloses a system for flue gas treatment, wherein the provided system comprises a quench module, a first control module, a filter collecting module, a wet scribing module and a regeneration module. In this system, parts of the particles contained in flue gas are removed in the quench module and the wet scribing module by a first scrubbing solution, and then in wet scribing module a second scrubbing liquid containing particles is formed. Next, the second scrubbing solution is treated in the regeneration module to form a third scrubbing solution, wherein the third scrubbing solution is then fed back to the quench module and/or the wet scrubbing module to substitute the first scrubbing solution for repeating what originally performed via the first scrubbing solution. Furthermore, this invention discloses a method for flue gas treatment.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: May 20, 2008
    Assignee: Chung Yuan Christian University
    Inventor: Chien-Song Chyang
  • Patent number: 7368053
    Abstract: The present invention discloses a membrane zeta potential measuring system which comprises a first measuring course and a second measuring course. The provided system calculates the zeta potential of the membrane pores based on a first potential drop measured from the first measuring course, and calculates the zeta potential of the membrane surface based on a second potential drop measured from the second measuring course.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: May 6, 2008
    Assignee: Chung Yuan Christian University
    Inventors: Ching-Jung Chuang, Yi-Chen Chiang, Hui-Ju Hsu, Chia-Chun Wu