Patents by Inventor Cheol-Woong Lee

Cheol-Woong 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).

  • Publication number: 20120119835
    Abstract: A current mode power amplifier includes a current steering stage configured to steer a scaled current based on differential voltage inputs, a filtered current mirror connected to the current steering stage to receive the scaled current and produce a filtered output current, and a resonant load configured to receive the output current and generate an output voltage signal for transmission.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 17, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Cheol-Woong Lee, Sunghyun Park, Jonghoon Choi
  • Publication number: 20110195679
    Abstract: Resistors and capacitors of an integrated circuit (IC) are calibrated without an external reference resistor. The IC includes a tunable circuit element and a benchmarking circuit. The benchmarking circuit includes a target component and an internal reference component. The internal reference component exhibits a lower sensitivity to changes in test conditions than the target component. The benchmarking circuit is useable to measure benchmarking metric values associated with the internal reference and the target. In one example, a first benchmarking metric value is measured while an internal reference component participates in the circuit and a second benchmarking metric value is measured while a target component participates in the circuit. A benchmark value is calculated based on the measured values and systemic, parasitic errors of the benchmarking circuit are canceled. The benchmark value is used to calculate a new tuning code of the tunable circuit element present on the IC.
    Type: Application
    Filed: May 26, 2010
    Publication date: August 11, 2011
    Applicant: QUALCOMM INCORPORATED
    Inventors: Cheol-Woong Lee, Sunghyun Park
  • Patent number: 7939189
    Abstract: Disclosed herein is a battery pack, which comprises a connecting member including an insulation frame mounted to the upper end of a battery cell and a pair of connection protrusions formed at the upper end surface of the frame, the connection protrusions being in contact with electrode terminals of the battery cell, a protection circuit module (PCM) mounted to the connecting member, the PCM including connection grooves, into which the connection protrusions are inserted such that the PCM can be coupled to the connecting member, and which are connected to a protection circuit, and a cap housing coupled to the connecting member or the battery cell while the PCM is surrounded by the cap housing.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: May 10, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jung-hwan Kim, Ki eob Moon, Seogjin Yoon, Cheol Woong Lee
  • Publication number: 20110045322
    Abstract: Disclosed herein is a secondary battery pack including a battery cell, a protection circuit module (PCM) assembly having a connection member (A), an insulative mounting member having a connection member (B) embedded therein, and an insulative cap. The connection member (B) is coupled to a second electrode terminal of the battery cell by welding, such that the connection member (B) is electrically connected to the second electrode terminal of the battery cell, in a state in which the insulative mounting member is mounted on the battery cell. The connection member (A) is coupled to a first electrode terminal of the battery cell upward from a PCM, such that the connection member (A) is electrically connected to the first electrode terminal of the battery cell. The electrical connection between the PCM assembly and the connection member (B) is achieved in a physical contact fashion.
    Type: Application
    Filed: November 14, 2008
    Publication date: February 24, 2011
    Inventors: Ju-Hwan Baek, Ki Eob Moon, Soonkwang Jung, Cheol Woong Lee
  • Publication number: 20110039130
    Abstract: Disclosed herein is a protection circuit module (PCM) including a protection circuit for controlling overcharge, overdischarge, and overcurrent of a battery, wherein a pair of connection members are attached to the bottom of the PCM, while the connection members are electrically connected to the protection circuit, the connection members being constructed by bending a sheet material into a predetermined shape, to form groove-shaped connection structures into which plate-shaped electrode terminals of a battery cell are inserted and coupled. Each of the connection members includes a lower connection plate, a pair of rear extensions, and front extensions.
    Type: Application
    Filed: November 14, 2008
    Publication date: February 17, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Ju-Hwan Baek, Cheol Woong Lee
  • Publication number: 20100304190
    Abstract: Disclosed is a battery in which an A/S label is disposed in a plastic member of the battery and a method for manufacturing the same. According to the present invention, the A/S label is prevented from being separated and disappeared and from being exchanged or modified arbitrarily by a battery user.
    Type: Application
    Filed: August 13, 2010
    Publication date: December 2, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Jae Sik CHUNG, Ki Eob MOON, Seog Jin YOON, Cheol Woong LEE
  • Patent number: 7828859
    Abstract: Disclosed are a method for manufacturing a battery in which an A/S label is disposed in a plastic member of the battery and a battery made by the method. In the battery made by the method according to the present invention, the A/S label is prevented from being separated and disappeared and from being exchanged or modified arbitrarily by a battery user.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: November 9, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Jae Sik Chung, Ki Eob Moon, Seog Jin Yoon, Cheol Woong Lee
  • Patent number: 7763379
    Abstract: Disclosed herein is a cap assembly mold mounted to a battery cell, in which an electrode assembly including cathodes/separators/anodes is disposed, wherein the cap assembly mold is manufactured by integrally forming a protection circuit board, a safety element, connection terminals, and a cap housing by insert injection molding, and, when the insert injection molding is carried out, the connection terminals are partially exposed from the lower end surface of the cap assembly mold such that the connection terminals can be electrically connected to electrode terminals of the battery cell. According to the present invention, the cap assembly mold is formed by insert injection molding in the state that the protection circuit and the battery are not connected with each other.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: July 27, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Ki eob Moon, Seogjin Yoon, Heegyu Kim, Cheol Woong Lee
  • Publication number: 20100098973
    Abstract: Disclosed herein is a battery pack including a battery cell, an insulative mounting member coupled to the battery cell in a specific coupling structure, a positive temperature coefficient (PTC) element having a lower connection plate directly coupled to the battery cell while the lower connection plate is not bent, and an insulative cap, whereby the number of the members for electrical connection and electrical insulation is reduced, with the result that the assembly process of the battery pack is greatly simplified, the dead space is reduced, with the result that the capacity of the battery in the same-sized battery pack is maximized, and the structural stability of the battery pack against an external force is improved.
    Type: Application
    Filed: November 23, 2007
    Publication date: April 22, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Cheol Woong Lee, Ki eob Moon
  • Patent number: 7434267
    Abstract: A method of preventing reduction of sales amount of records due to a digital music file illegally distributed through a communication network is disclosed. The method comprises a)collecting an illegally produced digital music file, which is derived from a record of a cooperating record corporation by searching the network, b)encrypting the collected digital music file with a predetermined key; and c)redistributing the encrypted digital music file through the network. According to present invention, the method collects the illegally produced(or reproduced) digital music file that is shared and distributed through the network, encrypts the collected music file, and enables only users having a private key to use the digital music files, thus inducing the users habitually using the digital music files to use them after paying a justifiable fee and being assigned the encryption key, and to purchase the formal record.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: October 7, 2008
    Assignee: Loudeye Corp.
    Inventors: Cheol-Woong Lee, Chang-Young Lee
  • Patent number: 7299498
    Abstract: A system and method of sharing digital literary works while protecting against an illegal reproduction through a communication network is disclosed. The system comprises a data communication network, a list providing server, at least one agent server, at least one user terminal, a main server, at least one sub-server, a premise communication network, and a network interface unit. The system is advantageous in that it enables users to share digital literary works produced for publicity, works having a low quality, or encrypted digital literary works through the network against a distribution of illegally reproduced digital literary works having the same quality as original literary works through a Sharing Web, thus preventing a reduction of sales amounts of original literary works due to such illegal reproductions.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: November 20, 2007
    Assignee: Loudeye Corp.
    Inventors: Cheol-Woong Lee, Chang-Young Lee
  • Publication number: 20030095660
    Abstract: Disclosed herein is a system and method for protecting digital works on a communication network. The work protection system includes one or more intermediate servers, one or more list provision servers and a work protection server. The intermediate servers perform intermediation of data shared. The list provision servers provide list information of the intermediate servers. The work protection server connects with a corresponding intermediate server, searches for shared digital works, calculates a saturation or dilution by examining the presence of identifiers, generates file and connection information about digital files to be shared, and causes the previously stored files of digital works to be protected to be shared.
    Type: Application
    Filed: September 19, 2002
    Publication date: May 22, 2003
    Applicant: Overpeer, Inc.
    Inventors: Chang Young Lee, Cheol Woong Lee
  • Publication number: 20030078889
    Abstract: A method of preventing reduction of sales amount of records due to a digital music file illegally distributed through a communication network is disclosed. The method comprises a)collecting an illegally produced digital music file, which is derived from a record of a cooperating record corporation by searching the network, b)encrypting the collected digital music file with a predetermined key; and c)redistributing the encrypted digital music file through the network. According to present invention, the method collects the illegally produced(or reproduced) digital music file that is shared and distributed through the network, encrypts the collected music file, and enables only users having a private key to use the digital music files, thus inducing the users habitually using the digital music files to use them after paying a justifiable fee and being assigned the encryption key, and to purchase the formal record.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 24, 2003
    Inventors: Cheol-Woong Lee, Chang-Young Lee
  • Publication number: 20030078888
    Abstract: A system and method of sharing digital literary works while protecting against an illegal reproduction through a communication network is disclosed. The system comprises a data communication network, a list providing server, at least one agent server, at least one user terminal, a main server, at least one sub-server, a premise communication network, and a network interface unit. The system is advantageous in that it enables users to share digital literary works produced for publicity, works having a low quality, or encrypted digital literary works through the network against a distribution of illegally reproduced digital literary works having the same quality as original literary works through a Sharing Web, thus preventing a reduction of sales amounts of original literary works due to such illegal reproductions.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 24, 2003
    Inventors: Cheol-Woong Lee, Chang-Young Lee
  • Publication number: 20020082999
    Abstract: A method of preventing reduction of sales amount of records due to a digital music file illegally distributed through a communication network is disclosed. The method comprises the steps of a)producing an advertising digital music file by deteriorating or damaging a sound quality of an original music file of a record of a cooperating record corporation; and b)distributing the advertising digital music file through the communication network. The present invention provides a method of producing a digital music file with lower sound quality for publicity, and distributing it over the network before a formal record is sold, thus minimizing a distribution of the illegal digital music file with the same quality as the original music file on the network.
    Type: Application
    Filed: October 15, 2001
    Publication date: June 27, 2002
    Inventors: Cheol-Woong Lee, Chang-Young Lee