Patents Assigned to Chung Yuan Christian University
  • Patent number: 7920269
    Abstract: A system and method for measuring interferences are disclosed. The system is based on the concept of a composite interferometer. The sample is measured while a simultaneous compensation of the phase deviation due to the relative displacement of the optical delay component between the measurements at different pixels of the sample is performed. In the application of profilometry, the information of the surface profile of a material is obtained from the phase shift of the interference signal. By using the proposed compensation mechanism, an axial resolution at nanometer scale can be achieved. For the measurement of a thin film, a polarized probe beam is oblique incident on the sample. The system can perform a simultaneous measurement of the refractive index and the thickness of the thin film. From the ratio of the intensities of the interferograms of TE and TM waves as well as the phase shifts of the interferograms, the refractive index and the thickness of the thin film can then be obtained simultaneously.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: April 5, 2011
    Assignee: Chung Yuan Christian University
    Inventors: I-Jen Hsu, Cheng-Chung Lai
  • Patent number: 7919959
    Abstract: A signal readout circuit comprises a first amplifier, a second amplifier and first to fourth transistors. The signal readout circuit has a first electrode, a second electrode, and a third electrode. The signal readout circuit applied in a wide current-sensing range of amperometric chemical sensing. The readout circuit may be applied in electrochemical sensing such as glucose, so as to read out a current signal of an amperometric sensor. Through a design of low input impedance, sensing signals in a wide current range can be sensed in the readout circuit. Also, a current mirror structure is used to copy the input current to an output current, such that an output signal range of the output signals of the current circuit is not limited by a supplied voltage.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 5, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Wen-Yaw Chung, Shao-Chun Cheng, Chiung-Cheng Chuang, Febus-Reidj Guinto Cruz, Dorota Genowefa Pijanowska
  • Publication number: 20110070500
    Abstract: An electrode material includes a particle-shaped crystalline metal oxide and further includes a particle-shaped amorphous metal oxide that is porous with a pore volume greater than or equal to 0.5 cm3/g. The electrode material can be formed and applied in the context of a lithium secondary battery.
    Type: Application
    Filed: March 19, 2010
    Publication date: March 24, 2011
    Applicant: Chung Yuan Christian University
    Inventors: Yui-Whei Chen, Po-Chun Chuang, Chien-Min Chang
  • Patent number: 7883668
    Abstract: An optical gas concentration sensor and method for measuring blood gas based on the light adsorption sensing technique are disclosed. The optical gas concentration sensor comprises a light source, a photo detector, and a gas filtering membrane for separating the indicator and a liquid. A gas in the liquid diffuses to the indicator through the gas filtering membrane so as to change the color of the indicator due to the chemical reaction occurred between the indicator and the gas. Then, the photo detector receives the light passing though the reacted indicator from the light source. The gas concentration is determined based on pH-sensitive absorbance spectrum of the indicator.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: February 8, 2011
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Nien-Hsuan Chou, Chih-Wei Lai
  • Patent number: 7880478
    Abstract: A nanoscale motion apparatus includes a fixed base, a movable platform, and means for moving the movable platform connected between the fixed base and the movable platform. A sensing device includes a holder, at least two nanosensors, and a measurement plate. The holder is mounted on the fixed base. The nanosensors are configured on the holder. The measurement plate is mounted on the movable platform. The measurement plate can be sensed by the nanosensors so as to measure the corresponding variation between the fixed base and the movable platform.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: February 1, 2011
    Assignee: Chung-Yuan Christian University
    Inventors: Yung Ting, Chun-Chung Li
  • Patent number: 7858699
    Abstract: The present invention discloses a thermally reversible composite material. The thermally reversible composite material comprises a Polyhedral Oligomeric Silsesquioxane (POSS) and a cross-linking agent. The Polyhedral Oligomeric Silsesquioxane comprises a plurality of dienophile groups. The cross-linking agent comprises at least two conjugated diene groups. The cross-linking agent interacts with the plurality of dienophile groups of the POSS though the conjugated diene groups to perform a thermally reversible Diels-Alder cycloaddition cross-linking reaction. The invention is applied as thermally reversible package materials.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: December 28, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Ying-Ling Liu, Meng-Han Fanchiang
  • Patent number: 7823530
    Abstract: The present invention discloses an adjustable film applicator which comprises an applicator body, a first knife, a second knife, a first fixing apparatus, a second fixing apparatus, a pair of first adjusting screws, and a pair of second adjusting screws. The first and second knife are adjusted to a first and second height by adjusting the first and second adjusting screws, wherein the second height is greater than the first height.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: November 2, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Kueir-Rarn Lee, Juin-Yih Lai, Se-Tsung Kao
  • Publication number: 20100258813
    Abstract: A light emitting diode of the invention via laser scribing method is used to build up the mesh texture on the backside of the sapphire of light emitting diodes. Then high reflectivity and thermal conductivity metals are deposited onto the mesh structure. Since the multiple-reflection from the texture, the light extraction efficiency will be increased. Meanwhile, the high thermal conductivity metal filled into the sapphire also lead to the better heat dissipation within the light emitting diodes, it will decrease the junction temperature and avoid the thermal effect to reduce light efficiency and the lifetime.
    Type: Application
    Filed: December 7, 2009
    Publication date: October 14, 2010
    Applicant: Chung Yuan Christian University
    Inventors: Yeeu-Chang Lee, Ko-Tao Lee
  • Patent number: 7806838
    Abstract: An image analysis method for abnormal hip structures. A plurality of transverse sections of a bone structure are provided. Structural features on the transverse sections are obtained. Abnormities of the structural features of the bone structure are recognized. Structural and feature properties of the bone structure are estimated according to recognition results, and corresponding structural parameters relating to the bond structure are obtained accordingly.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: October 5, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Ming-Dar Tsai, Ming-Shium Hsieh
  • Patent number: 7794778
    Abstract: An amperometric sensor for uric acid and a manufacturing method thereof are disclosed, in which polyacrylamide is used to fix catalase, uricase and ferrocenecarboxylic acid on a working electrode. In determining concentration of uric acid, hydrogen peroxide is produced when enzyme and uric acid react with each other and then a reduction current generated from enzyme on the electrode with an external voltage 200 mV applied is detected. In determining concentration of uric acid, a concentration range of 2.5-20 mg/dl is achieved and sensibility of the sensor in a linear portion is 5.17 uAcm?2(mg/dl)?1. In addition, reaction time required for the reaction between enzyme and uric acid is 5.17 uAcm?2(mg/dl)?1.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: September 14, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Mei-Ling Cheng
  • Patent number: 7758733
    Abstract: In this invention, a separative structure of the ion-selecting electrode is applied to fabricate the dual type potentiometric biosensor for creatinine detection. According to the fabrication process, the creatinine enzyme is immobilized onto a conductive layer of a substrate of pH sensing membrane and ammonium ion-selecting membrane. The conductive layer provides with a sensing region and a non-sensing region. A conductive line is extended from the conductive layer for using as an external electrical contact point. The dual type potentiometric creatinine biosensor was fabricated by using the enzyme immobilization method onto the surface of the selecting membrane of sensing membrane of pH sensing electrode and creatinine sensor.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: July 20, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Chung-Wei Pan, Nien-Hsuan Chou
  • Patent number: 7743490
    Abstract: The present invention discloses an auto-assembling system for small shell devices. The system includes a first transportation apparatus, a second transportation apparatus, a first driving module, a second driving module, a power assembling module and a control circuit. The first transportation apparatus having a first transportation belt and the second transportation apparatus having a second transportation belt are used to transport the frames or the covers of the devices. The power assembling module mounted on the end of the first transportation apparatus and the second transportation apparatus is used for vertically pressing downwardly the frames and the covers such that the frames and the covers can be assembled.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: June 29, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Shih Ming Wang, Ting Kuo Chen
  • Patent number: 7736478
    Abstract: An ion solution concentration-detecting device includes a working electrode, a reference electrode, and a link element. The working electrode and the reference electrode are inserted into the link element. The working electrode, inserted into the link element, is replaceable, for the better sensitivity to the different ion solution. The working electrode being a contact-detecting electrode can be replaced by another contact-detecting electrode with different sensing membrane. The reference electrode includes a polymeric membrane with ion material covering silver/silver chloride (Ag/AgCl) electrode to provide a fixed and stable electrical potential. The working electrode may be a contact-detecting electrode having a sensing membrane. The sensing membrane may be a metal oxide or a polymer with ion material for measuring different ion solution effectively.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: June 15, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Chung-We Pan, Chin-Shuen Hung
  • Patent number: 7739625
    Abstract: A method for controlling a peak current is provided. The method first uses a plurality of registers to encode a plurality of states of a circuit and generates an original state code. Then, the original state code is re-encoded to reduce the difference between the sum of charging current of the charged registers and the sum of discharging current of the discharged registers while the registers are switched among the charging/discharging states. Finally, a standard technology library is read and logic circuit synthesis is performed for the re-encoded state codes.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: June 15, 2010
    Assignees: Industrial Technology Research Institute, Chung Yuan Christian University
    Inventors: Yow-Tyng Nieh, Shih-Hsu Huang, Chia-Ming Chang
  • Publication number: 20100132757
    Abstract: The present invention discloses a solar energy system that uses perturbation and observation method to achieve maximum power point (MPP) tracking in conjunction with interleaving operations of sets of converters to maximize solar energy conversion.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Applicant: Chung Yuan Christian University
    Inventors: JIN-MAN HE, YEN-TING YI
  • Patent number: 7719427
    Abstract: A wireless pH measurement system is disclosed, the wireless pH measurement system includes a portable module and a receiver end. The portable module comprises a signal detecting and processing portion and a wireless transmission portion. The signal detecting and processing portion comprises a sensor unit for detecting a pH signal, amplifying, filtering noise, analog/digital conversion and numerical processing to generate a pH measurement signal. The wireless transmission portion receives the pH measurement signal via a transmission interface and transmits by a Bluetooth module. The receiver end includes a Bluetooth receiver for receiving the pH measurement signal. The receiver end processes the pH measurement signal by programs, displays, analyzes and stores the pH measurement signal and transmits warning signal when an abnormal pH measurement signal is received.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: May 18, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Shen-Kan Hsiung, Jung-Chuan Chou, Tai-Ping Sun, Jun-Jie Feng
  • Publication number: 20100070254
    Abstract: A method is provided for generating real-time haptic response information for a haptic simulating device during a surgery simulation performed on an object volume by a virtual tool that is associated with the haptic simulating device. The object volume includes tissue voxels, null voxels, and object boundary points located between corresponding adjacent pairs of the tissue and null voxels.
    Type: Application
    Filed: September 15, 2009
    Publication date: March 18, 2010
    Applicants: Chung Yuan Christian University, Taipei Medical University
    Inventors: Ming-Dar Tsai, Ming-Shium Hsieh
  • Patent number: 7662268
    Abstract: The present invention discloses a method for measuring the zeta potential at the cylinder's outer surface. In the measuring cell, the cylinder is held coaxially inside a reference tube and a given solution is forced to flow through the annular flow channel between the cylinder and the reference tube. The streaming potential induced by the flow forced with a hydraulic pressure drop is measured to determine the zeta potential, ?m, of the cylinder's outer surface by using the following Equation, E _ ? ? ? P == - D ? ? ? k ? ( ? m + ? ref 2 ) ? F where D is the permittivity, ?ref is the zeta potential of the reference tube, ? is the viscosity of the solution, k is the electric conductivity of the solution, and F is a correction factor for the electrokinetic model. Moreover, this invention also discloses a system for measuring the zeta potential of the cylinder's outer surface.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: February 16, 2010
    Assignee: Chung Yuan Christian University
    Inventor: Ching-Jung Chuang
  • Patent number: 7663357
    Abstract: A signal readout circuit for amperometric sensor for reading a readout signal of a sensor includes an amplifier, a first transistor, a second transistor, and a first resistor. A negative input end of the amplifier receives an input voltage, and a positive input end of the amplifier is connected to a reference electrode of the sensor. Gates of the first transistor and the second transistor are connected to an output end of the amplifier, a drain of the first transistor is connected to a counter electrode of the sensor, and a drain of the second transistor is connected to the first resistor.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: February 16, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Wen-Yaw Chung, Tsai-Tseng Kuo, Ying-Hsian Wang, Dorota Genowefa Pijanowska, Wladyslaw Torbicz
  • Patent number: 7662615
    Abstract: The present invention discloses a system for cultivating cells, wherein the system comprises a bioreactor, a pump, and an electromagnetic module comprising a coil and an electromagnetic stimulator. The cells are disposed within the bioreactor. The pump, connected to the bioreactor, is used to drive gas into the bioreactor, so as to ensure a sufficient gas supply for the cells. Additionally, the electromagnetic stimulator, connected to the coil, is used to provide a plurality of first signals, and the first signals are transported to the coil. Then the induced electromagnetic field is produced by the coil, whereby the induced electromagnetic field is applied on the cells within the bioreactor. Moreover, this invention also discloses the method for cultivating cells.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: February 16, 2010
    Assignee: Chung Yuan Christian University
    Inventors: Walter Hong-Shong Chang, Ming-Tzu Tsai