Patents by Inventor Jin-Woo Ahn

Jin-Woo Ahn 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: 20090089204
    Abstract: Disclosed is a stock account/order/market price inquiry service method using a mobile terminal that is able to perform a stock account/order/market price inquiry service through a mobile terminal using a stock chip. A stock account/order/market price inquiry service method comprising the steps of: (1) displaying a lower menu page on a mobile terminal of the stock account/order service after a PIN authentication; (2) generating an account/order service request message on the basis of stock chip information read from a stock chip and service request information corresponding to the lower menu and then transmitting the same to a relay server; and (3) receiving a service response message corresponding to service request message from the relay server and displaying the same on the screen of a mobile terminal.
    Type: Application
    Filed: November 14, 2008
    Publication date: April 2, 2009
    Applicant: SK Telecom Co., Ltd.
    Inventors: Won Ki Kim, Jin Woo Ahn, Bo Kyung Seo, Won Jun Lee, Yong Su Jeon, Hoo Jong Kim, Eun Su Jung, Jong Sung Park, Kyung Ok Lee
  • Patent number: 7279863
    Abstract: Disclosed is a method and apparatus for detecting an excitation position of an SRM by comparison of detected currents. The method includes detecting a current by applying a first test voltage to each phase of the SRM, detecting a current by applying a second test voltage to each phase, determining an operation state of the SRM based on a deviation between the currents detected in any one of the phases, determining the operation state of the SRM as a rotation state if the deviation value exceeds a predetermined value, and applying a third test voltage to a phase excited just prior to a current excited phase to detect the current and turning on a phase to be next excited if the detected current value is more than a first reference value, and turning off the phase excited just prior to the presently excited phase if the detected current value is more than a second reference value. The phase excitation position is accurately detected according to the rotating speed without using a position sensor.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: October 9, 2007
    Assignee: SR Technologies, Inc.
    Inventors: Jin-Woo Ahn, Dong-Hee Lee, Tae-Hyoung Kim
  • Publication number: 20070075671
    Abstract: Disclosed is a method and apparatus for detecting an excitation position of an SRM by comparison of detected currents. The method includes detecting a current by applying a first test voltage to each phase of the SRM, detecting a current by applying a second test voltage to each phase, determining an operation state of the SRM based on a deviation between the currents detected in any one of the phases, determining the operation state of the SRM as a rotation state if the deviation value exceeds a predetermined value, and applying a third test voltage to a phase excited just prior to a current excited phase to detect the current and turning on a phase to be next excited if the detected current value is more than a first reference value, and turning off the phase excited just prior to the presently excited phase if the detected current value is more than a second reference value. The phase excitation position is accurately detected according to the rotating speed without using a position sensor.
    Type: Application
    Filed: January 17, 2006
    Publication date: April 5, 2007
    Inventors: Jin-Woo Ahn, Dong-Hee Lee, Tae-Hyoung Kim
  • Publication number: 20030030755
    Abstract: A television set has a first and second tuner for detecting a broadcasting signal of searched channel, and a controller for controlling the first and second tuners. An output of the first tuner is displayed on a main screen, and the output of the second tuner is displayed on a PIP screen. The controller controls the second tuner to perform an automatic search for a plurality of channels, and the channel searched by the second tuner is stored in a storage unit. The controller controls the first tuner to output the broadcasting signal of a certain channel among the channels searched by the second tuner during the automatic search. The certain channel can be a first channel searched among the channels searched by the second tuner, or a channel having a level of the broadcasting signal higher than a predetermined level among the channels searched by the second tuner.
    Type: Application
    Filed: July 10, 2002
    Publication date: February 13, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Jin-woo Ahn