Patents by Inventor Chun Lee

Chun Lee 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).

  • APPARATUS FOR CONTROLLING DUTY RATIO OF SIGNAL
    Publication number: 20140118045
    Abstract: Disclosed is an apparatus for controlling a duty ratio of a signal that includes a clock control unit configured to generate a plurality of control signals based on an input signal, a half-cycle generation unit configured to generate a multiplied signal by use of the input signal and a delay signal that is obtained by delaying the input signal based on a delay control voltage, and divide the multiplied signal to generate a first division signal and a second division signal that are in inverse relation to each other, a comparator unit configured to compare a pulse width of the first division signal with a pulse width of the second division signal based on the control signal provided by the clock control unit, and output a delay control signal corresponding to a result of the comparison, and a control voltage generation unit configured to output a delay control voltage.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 1, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hui Dong LEE, Jae Ho JUNG, Kwang Chun LEE
  • PRIMARY CELL SIGNALING FOR EMBMS IN CARRIER AGGREGATION
    Publication number: 20140119264
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In a first configuration, the apparatus is an eNB. The eNB constructs an MCCH change notification, and sends the MCCH change notification with a carrier frequency index for a first frequency of a first cell on a second frequency of a second cell. In a second configuration, the apparatus is a UE. The UE receives a configuration with aggregated carriers including a primary carrier from a primary cell and one or more secondary carriers from one or more corresponding secondary cells, and receives an MCCH change notification with a carrier frequency index for a first frequency of a first cell on a second frequency of a second cell. The first cell and the second cell are each one of the primary cell and the secondary cells.
    Type: Application
    Filed: March 8, 2013
    Publication date: May 1, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Jack Shyh-Hurng Shauh, Jun Wang, Sivaramakrishna Veerepalli, Kuo-Chun Lee, Srinivasan Balasubramanian
  • Testing apparatus and testing method for telephone apparatus
    Patent number: 8712018
    Abstract: A testing apparatus and a testing method for a telephone apparatus are disclosed. The testing apparatus includes an audio generator, an audio signal processor, and a noise analyzer. The audio generator transmits a testing audio signal to a receiver of the telephone apparatus. The audio signal processor receives the testing audio signal and an output audio signal. The audio signal processor performs a time-to-frequency transformation operation on a difference between the testing audio signal and the output audio signal to obtain a noise information. The noise analyzer receives the noise information and obtains a maximum noise component among a plurality of noise components respectively corresponding to frequencies in the noise information. The noise analyzer compares the maximum noise component with a predetermined threshold to generate a testing result of the telephone apparatus.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: April 29, 2014
    Assignee: Wistron Corporation
    Inventors: Pei-Lin Chen, Hsin-Chun Lee, Shou-Jung Chang, Chia-Chien Feng
  • PLASMONIC JUNCTIONS FOR SURFACE-ENHANCED SPECTROSCOPY
    Publication number: 20140113382
    Abstract: The invention relates to the use of a construct for the detection of an analyte using surface enhanced spectroscopic techniques. The construct includes linked surfaces, where the link is formed by a linker providing a fixed inter-surface separation between the linked surfaces, wherein the linker is a linking compound, and at least one of the surfaces is the surface of a nanoparticle. The linking compound is suitable for interacting with the analyte. The linking compound may be a cucurbituril. The surface enhanced spectroscopic technique may be surface enhanced Raman spectroscopy (SERS).
    Type: Application
    Filed: June 24, 2011
    Publication date: April 24, 2014
    Applicant: CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Richard William Taylor, Jeremy John Baumberg, Sumeet Mahajan, Tung-Chun Lee, Oren Alexander Scherman, Setu Kasera, Roger Coulston
  • Methods and systems for proactively requesting neighbor base station information
    Patent number: 8706117
    Abstract: Certain embodiments of the present disclosure allow a mobile station (MS) to proactively request neighbor base station information from a serving base station, for example, if a mobile neighbor advertisement (MOB_NBR-ADV) message is not received (or expected) in a predetermined time period.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: April 22, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Guangming Carl Shi, Kuo-Chun Lee, Steven D. Cheng, Shan Qing, Tom Chin
  • ELECTRONIC DEVICE
    Publication number: 20140104121
    Abstract: An electronic device including a first casing, a second casing, at least one first connecting unit and at least one feeding unit is provided. The first casing includes a conductive material. The second casing includes a conductive material. The first casing and the second casing are conducted with each other through the first connecting unit. The feeding unit is electrically connected to the first casing and has a feeding point and a capacitor component, wherein the capacitor component is connected with the feeding point, and the electronic device forms an antenna structure with the first casing, the second casing, the first connecting unit and the feeding unit and transmits an electromagnetic signal via the feeding unit.
    Type: Application
    Filed: December 25, 2013
    Publication date: April 17, 2014
    Applicant: COMPAL ELECTRONICS, INC.
    Inventors: Li-Chun Lee, Chieh-Tsao Hwang, Shih-Chia Liu, Yen-Hao Yu, Jhin-Ciang Chen
  • Maintaining location based service session continuity during inter-RAT mobility
    Patent number: 8700055
    Abstract: When a user equipment engaged in mobile communications transfers from a network with one radio access technology (RAT) to another network with a different radio access technology, maintaining continuity of location based services can improve system performance. A user equipment may perform a series of checks when undergoing inter-RAT transfer to determine if a location based services protocol used with the source network is operable on the target network. The UE also determines if location based services sessions are at a point where they can be continued following inter-RAT transfer. Where possible, protocols and sessions are maintained to preserve location based services continuity.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: April 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Srinivasan Balasubramanian, Kirk A. Burroughs, Thomas Klingenbrunn, Ie-Hong Lin, Arash Mirbagheri, Jean-Michel R. Rousseau, Reza Shahidi
  • Multiband antenna
    Patent number: 8698673
    Abstract: A multiband antenna includes a ground plane, a dielectric substrate and a radiating metal portion. The dielectric substrate is located at one side edge of the ground plane. The radiating metal portion is disposed on one surface of the dielectric substrate and includes a first metal portion and a second metal portion. The first metal portion is substantially of an L-shape. One end of the first metal portion is adjacent to the side edge of the ground plane and is the antenna's feeding point connected to a signal source, and the other end of the first metal portion is an open end. The second metal portion comprises a U-shape portion. The second metal portion includes a first open end and a second open end, which are respectively located on two opposite sides of the open end of the first metal portion.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: April 15, 2014
    Assignee: Acer Inc.
    Inventors: Kin-Lu Wong, Li-Chun Lee
  • Systems and methods for multimode wireless communication handoff
    Patent number: 8699450
    Abstract: Methods and apparatus for autonomous handover between WiMAX (Worldwide Interoperability for Microwave Access) and CDMA (Code Division Multiple Access) EVDO (Evolution-Data Optimized) or 1×RTT (one times Radio Transmission Technology, or 1×) networks during normal operation of a dual-mode mobile station (MS) are provided. The methods and apparatus may improve service continuity during handover and need not require any changes to the WiMAX or CDMA standards.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: April 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tom Chin, Kuo-Chun Lee, Ayman Fawzy Naquib
  • Methods and systems for diversity idle mode in a mobile station
    Patent number: 8699509
    Abstract: A mobile station (MS) of a wireless communications system monitors the paging messages of a serving base station (BS) as well as paging messages of one or more neighboring BSs with sufficient signal strength or signal quality. The MS monitors for paging messages from a set of BSs including the serving BS and the neighboring BSs, during listening intervals. The MS coordinates the listening intervals with the paging intervals of the paging messages. These and other aspects related to monitoring the paging intervals of multiple BSs may help improve paging success rate.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: April 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tom Chin, Kuo-Chun Lee
  • METHOD AND SYSTEM FOR COMPRESSING DATA PACKETS IN LTE EVOLVED MULTICAST BROADCAST MULTIMEDIA SERVICE
    Publication number: 20140098745
    Abstract: Compression of broadcast data packets is described in which a compressed broadcast data packet is formed by causing at least one field in a packet header to be excluded from the transmitted data packet. The data from the compressed or removed field is data that is otherwise available to a user entity. The user entity receives the compressed broadcast data packet and determines information corresponding to at least one of the eliminated fields in order to process the received broadcast information.
    Type: Application
    Filed: March 12, 2013
    Publication date: April 10, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Srinivasan Balasubramanian, Kuo-Chun Lee, Jack Shyh-Hurng Shauh, Sivaramakrishna Veerepalli, Jun Wang
  • Methods and systems for emergency call handling with position location over communication networks
    Patent number: 8693978
    Abstract: Certain embodiments of the present disclosure relate to methods for handling an emergency call along with its position location in the WiMAX network, and for performing a handover of the emergency call for a multi-mode mobile station that supports multiple wireless standards.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: April 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Guangming Carl Shi, Wei Zhang, Tom Chin, Kuo-Chun Lee
  • Methods and systems for subscriber station-based admission control
    Patent number: 8693408
    Abstract: A method for subscriber station-based admission control may include determining that there is demand for a new connection at the subscriber station. The method may also include determining whether the new connection should be admitted based on resource availability. The method may also include sending a request for the new connection to a base station if it is determined that the new connection should be admitted.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: April 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tom Chin, Kuo-Chun Lee, Carl Guangming Shi
  • Power efficient emergency call triggered tracking method
    Patent number: 8693979
    Abstract: Aspects of the present disclosure provide power efficient methods to track an emergency call. A mobile station may take Location Base Service (LBS) measurements during a low power state and may report the measurements to a serving base station. The serving base station may report the measurements to a network control and management system (NCMS) to track the emergency call.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: April 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Steven D. Cheng, Guangming Shi, Tom Chin, Kuo-Chun Lee
  • Method for transmitting signal of orthogonal frequency division multiplexing type, and apparatus applied to the same
    Patent number: 8693572
    Abstract: The method for transmitting a signal of an orthogonal frequency division multiplexing type according to an exemplary embodiment of the present invention has a configuration allowing a radio unit (RU) to perform a component adding a compression component and a decompression component before/after a serial interface interlocking between a digital unit (DU) and the radio unit (RU) and a component inserting a cyclic prefix (CP) into a signal so as to secure orthogonality of an orthogonal frequency division multiplexing (OFDM) signal, in a structure in which a base station is physically divided into the DU and the RU.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: April 8, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Gweon Do Jo, Chang Wahn Yu, Heon Kook Kwon, Byung Su Kang, Kwang Chun Lee
  • Method for manufacturing flexible organic thin film solar cell by ion beam treatment and solar cell manufactured by the same
    Patent number: 8685780
    Abstract: The present invention provides a method for an organic thin film solar cell and an organic thin film solar cell manufactured by the same, which can reduce manufacturing cost by simplifying manufacturing process, ensure long-lasting durability and stability, and improve energy conversion efficiency of the solar cell.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: April 1, 2014
    Assignee: Hyundai Motor Company
    Inventors: Won Jung Kim, Yong Jun Jang, Yong Gu Kim, Ki Chun Lee, Sang Hak Kim, Mi Yeon Song
  • LOCK DETECTER AND CLOCK GENERATOR HAVING THE SAME
    Publication number: 20140085016
    Abstract: A lock detector and a clock generator including the same are disclosed. A lock detector includes a counter unit which counts a non-matching section of a first signal and a second signal to provide a count value, the first signal and the second signal being comparison result signals obtained by comparing a phase of a reference signal with a phase of a comparison signal, and a lock detection unit which outputs a lock detection signal based on a result of comparing the count value with the reference value. Accordingly, a lock state of the phase-locked loop can be detected rapidly and exactly.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hui Dong LEE, Kwang Chun LEE, Jae Ho JUNG
  • DETERMINATION OF AVAILABLE SERVICES IN A BROADCAST NETWORK
    Publication number: 20140080475
    Abstract: The various embodiments enable a mobile device to determine the available services in a broadcast network based on an augmented coverage configuration file. In the various embodiments, the augmented coverage configuration file correlates the services for overlapping cells on different frequency carriers enabling the mobile device to determine the available services without having to scan additional frequency carriers.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 20, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Ralph A. GHOLMIEH, Nagaraju NAIK, Jun WANG, Kuo-Chun LEE, Carlos M.D. PAZOS
  • Non-aqueous electrolyte and lithium secondary battery having the same
    Patent number: 8673506
    Abstract: A non-aqueous electrolyte includes (i) a cyclic anhydride; (ii) an electrolyte solvent containing carbonate and linear saturated ester; and (iii) an electrolyte salt. Since the linear saturated ester and cyclic anhydride are used in mixture as components of an electrolyte, it is possible to minimize problems caused by using either of the linear saturated ester or cyclic anhydride and to improve life cycle performance of the secondary battery and charging/discharging characteristics at room temperature or a high temperature.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: March 18, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jong-Ho Jeon, Jeong-Ju Cho, Ho-Chun Lee
  • Cup holder
    Patent number: D701758
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: April 1, 2014
    Assignee: Yu Sang Tech Co., Ltd.
    Inventor: Seung Chun Lee