Patents by Inventor Chang Hwan Lee
Chang Hwan 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).
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Publication number: 20140013863Abstract: Disclosed are a stator assembly and a torque assembly device. The stator assembly includes a stator holder, a first stator which includes a first body making contact with an upper end of the stator holder and a plurality of first teeth extending from the first body so as to be disposed inside the stator holder, a second stator which includes a second body making contact with a lower end of the stator holder and a plurality of second teeth extending from the second body so to be alternately aligned with the first teeth inside the stator holder, and a fusion-welded material that is fusion-welded to the stator holder and the first and second bodies.Type: ApplicationFiled: September 17, 2013Publication date: January 16, 2014Applicant: LG INNOTEK CO., LTD.Inventors: Sung Kyu BAE, Chang Hwan LEE
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Patent number: 8590370Abstract: Provided is a power steering sensor assembly which is capable of maintaining a stable coupling between a sensing device and a housing without using a separate auxiliary member, and is mounted in an electric power steering system. The power steering sensor assembly includes a sensing device including a plurality of coupling projections formed on an outer circumferential surface thereof; and a first housing having the sensing device housed therein and including a plurality of coupling grooves formed on an inner circumferential surface thereof, the coupling grooves each having an upper end which is opened. When the sensing device is housed in the first housing, the coupling projections of the sensing device are inserted into the coupling grooves of the first housing, respectively, such that the sensing device is coupled to the first housing without being moved in a radial direction and an axial direction.Type: GrantFiled: July 1, 2009Date of Patent: November 26, 2013Assignee: LG Innotek Co., Ltd.Inventor: Chang Hwan Lee
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Publication number: 20130305843Abstract: A torque angle sensor according to an exemplary embodiment of the present disclosure includes a torque sensor unit and an angle sensor unit at a housing centrally arranged with a rotation shaft, the torque sensor unit including a stator installed inside the housing, a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft, a collector installed at the housing to transmit a magnetic field of the torque magnet, a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector, and a PCB (Printed Circuit Board) mounted with the magnetic device module, wherein the PCB is arranged to a direction perpendicular to an axial direction of the rotation shaft and installed at a distal end with the magnetic device module.Type: ApplicationFiled: May 15, 2013Publication date: November 21, 2013Applicant: LG Innotek Co., Ltd.Inventors: Chang Hwan LEE, Young Wuk LEE, Myung Chul WOO
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Patent number: 8561481Abstract: Disclosed are a stator assembly and a torque assembly device. The stator assembly includes a stator holder, a first stator which includes a first body making contact with an upper end of the stator holder and a plurality of first teeth extending from the first body so as to be disposed inside the stator holder, a second stator which includes a second body making contact with a lower end of the stator holder and a plurality of second teeth extending from the second body so to be alternately aligned with the first teeth inside the stator holder, and a fusion-welded material that is fusion-welded to the stator holder and the first and second bodies.Type: GrantFiled: January 16, 2013Date of Patent: October 22, 2013Assignee: LG Innotek Co., Ltd.Inventors: Sung Kyu Bae, Chang Hwan Lee
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Publication number: 20130237220Abstract: An apparatus and a method of connecting a portable terminal to a network, by which a specific network can be connected to through selection of a user, are provided. The apparatus includes a display unit for informing of a state of non-connection to a specific network and for displaying a menu item for connecting to the specific network, and a controller for controlling the portable terminal so as to search for and to connect to the specific network through selection of the menu item for connecting to the specific network when the portable terminal is not connected to the specific network.Type: ApplicationFiled: March 7, 2013Publication date: September 12, 2013Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Shin-Duck LEE, Chang-Hwan LEE, Jong-Pil LEE, Chang-Hun LEE
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Patent number: 8463976Abstract: A dual modem device includes a first processor to communicate with a first network and a second processor to communicate with a second network. The first processor includes a USB module to transceive a signal with a computer side using a universal serial bus (USB) interface, a first packet control block to determine a type of the signal transceived via the USB module and to decide a communication path, and a first function block to process a signal associated with the first network. The second processor includes a first control block to process a control signal for the first processor, a second control block to process a control signal for the second processor, and a second function block to process a signal associated with the second network.Type: GrantFiled: May 26, 2010Date of Patent: June 11, 2013Assignee: LG Electronics Inc.Inventors: Young Kim, Chang Hwan Lee, Young Hwan Lee, Chang Jae Lee
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Patent number: 8375810Abstract: Disclosed are a stator assembly and a torque assembly device. The stator assembly includes a stator holder, a first stator which includes a first body making contact with an upper end of the stator holder and a plurality of first teeth extending from the first body so as to be disposed inside the stator holder, a second stator which includes a second body making contact with a lower end of the stator holder and a plurality of second teeth extending from the second body so to be alternately aligned with the first teeth inside the stator holder, and a fusion-welded material that is fusion-welded to the stator holder and the first and second bodies.Type: GrantFiled: September 10, 2008Date of Patent: February 19, 2013Assignee: LG Innotek Co., Ltd.Inventors: Sung Kyu Bae, Chang Hwan Lee
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Patent number: 8242995Abstract: A light emitting display device and a method for driving the same are disclosed. Each pixel of the light emitting display device includes: a light emitting element that emits light in response to a drive current based on a gray-scale current on the associated data line; a first switching element that supplies the drive current to the light emitting element; a first voltage line that supplies a first voltage to a source electrode of the first switching element; a second switching element connected with the first switching element that forms a current mirror with the first switching element; a second voltage line that supplies a second voltage of the second switching element; and a voltage supply circuit that divides the first voltage from the first voltage line and the second voltage from the second voltage line and supplies the resulting voltage to a source electrode of the second switching element.Type: GrantFiled: June 27, 2006Date of Patent: August 14, 2012Assignee: LG Display Co., Ltd.Inventor: Chang Hwan Lee
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Patent number: 8238054Abstract: A hard disk drive effectively removes internal humidity therefrom and thus improves the reliance and performance of the hard disk drive in high and increased humidity environments.Type: GrantFiled: May 20, 2010Date of Patent: August 7, 2012Assignee: Seagate Technology InternationalInventors: Tae Young Kim, Chang-Hwan Lee
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Patent number: 8209571Abstract: A valid-transmission verifying circuit and a semiconductor device including the same are provided. The valid-transmission verifying circuit provides data to an output circuit in correspondence with reference data, the valid-transmission verifying circuit comprising: a data receiving terminal receiving the reference data; a valid-transmission verifier including a reference load unit configured to sample the reference data, the data sampling operation is interrupted in response to a sampling control signal to determine whether the data sampling operation has been performed within a sampling time; and a selection switch providing the reference data to one of the normal output circuit and the valid-transmission verifier in response to a mode selection signal.Type: GrantFiled: July 26, 2006Date of Patent: June 26, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Chang-Hwan Lee
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Publication number: 20120153982Abstract: Provided are a tester configured to test a semiconductor device and a test system including the same. The tester may include at least one contact unit and at least one memory controller. The contact unit is in contact with the semiconductor device. The memory controller is connected to the contact unit. The memory controller controls data input/output (I/O) operations of the semiconductor device and tests the semiconductor device.Type: ApplicationFiled: December 16, 2011Publication date: June 21, 2012Applicant: Samsung Electronics Co., Ltd.Inventor: Chang-hwan LEE
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Publication number: 20120075744Abstract: A hard disk drive includes a controller that optimizes a flying height of a head of a hard disk drive. The controller determines an optimal flying height of a head based on a preset table value and an MRR value of a head measured during a hard disk drive manufacturing process and sets the head according the determined optimal flying height such that recording capacitance is improved.Type: ApplicationFiled: September 15, 2011Publication date: March 29, 2012Applicant: Samsung Electronics Co., LtdInventors: Seong Yong YOON, Myung Wook Song, Chang-Hwan Lee, Su-Hyeon Kim
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Patent number: 8139308Abstract: A method of controlling a flying height of a magnetic head of a hard disk drive includes calculating a corrected flying on demand (FOD) voltage to correct a difference between a measured flying height measured by applying a burn-in FOD voltage corresponding to a target flying height and a burn-in flying height in a reference FOD voltage profile corresponding to the burn-in FOD voltage, using the reference FOD voltage profile, in the reference FOD voltage profile that is a profile of a second signal for calculating the flying height of the magnetic head with respect to a first signal for calculating an FOD voltage that allows an end of the magnetic head to thermally expand and protrude when applied to a heater included in the magnetic head, and applying an applied FOD voltage obtained by applying the corrected FOD voltage, to the burn-in FOD voltage, to control the flying height of the magnetic head.Type: GrantFiled: April 24, 2008Date of Patent: March 20, 2012Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Young-Shin Kim, Hae Jung Lee, Chang-Hwan Lee
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Patent number: 8106925Abstract: A system for composing pictorial/video image contents where the Face Image which the User designates (FIU) is reflected is disclosed. The system provides a series of pictorial/video image composing pipe line for changing the face of a specific source character that appears in pictorial/video image contents to a FIU pattern and guides a video related company (for example, a producer, a distributor, a sales agency (provider), etc.) to establish a base infra for producing/manufacturing/marketing a video on demand (VOD) content that reflects individual desire of a user so that it can satisfy user needs in changing the face image of a specific character appearing in pictorial/video image contents into the face image of a favorite person (or the user designates, for example, his/her own face image, the face image of his/her acquaintance, the face image of a specific celebrity, the face image of a specific politician, and so on).Type: GrantFiled: July 19, 2007Date of Patent: January 31, 2012Assignee: FXGear, Inc.Inventor: Chang Hwan Lee
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Publication number: 20110283366Abstract: Disclosed is a method and system of preventing browser-based abuse. The method of preventing browser-based abuse may include determining whether an access based on a browser function extension module is a malicious access for acquiring data of an Internet browser, and blocking the access based on the browser function extension module when the access is determined to be a malicious access.Type: ApplicationFiled: November 3, 2009Publication date: November 17, 2011Applicant: NHN BUSINESS PLATFORM CORP.Inventors: Oh-Hyun Kwon, Hyun-Jong Kim, Chang-Hwan Lee
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Patent number: 8047066Abstract: A steering angle sensing apparatus and method are provided. The apparatus and method sense the steering angle of a steering shaft by using a rotated bit value difference corresponding to the rotated angles of magnets, which are respectively coupled on an axis of one of a plurality of sub gears, when the sub gears with respectively different gear ratios rotate with a shaft gear that rotates together with the steering shaft.Type: GrantFiled: October 21, 2010Date of Patent: November 1, 2011Assignee: LG Innotek Co., Ltd.Inventors: Kyong Ho Kang, Choon Wook Park, Sung Kyu Bae, Chang Hwan Lee
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Publication number: 20110247408Abstract: Provided is a power steering sensor assembly which is capable of maintaining a stable coupling between a sensing device and a housing without using a separate auxiliary member, and is mounted in an electric power steering system. The power steering sensor assembly includes a sensing device including a plurality of coupling projections formed on an outer circumferential surface thereof; and a first housing having the sensing device housed therein and including a plurality of coupling grooves formed on an inner circumferential surface thereof, the coupling grooves each having an upper end which is opened. When the sensing device is housed in the first housing, the coupling projections of the sensing device are inserted into the coupling grooves of the first housing, respectively, such that the sensing device is coupled to the first housing without being moved in a radial direction and an axial direction.Type: ApplicationFiled: July 1, 2009Publication date: October 13, 2011Inventor: Chang Hwan Lee
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Publication number: 20110214515Abstract: Provided is a complex sensing apparatus for a steering system. In the complex sensing apparatus in accordance, since an insertion projections of a first PCB are inserted into a through-holes of a second PCB to be press-fitted to each other, the first PCB is securely coupled to the second PCB. In addition, since a support member configured to surround and support an edge of the first PCB is coupled to the second PCB, the first PCB is more securely coupled to the second PCB. Accordingly, since there is no probability of separating the first PCB from the second PCB and there is no probability of occurrence of cracks in a soldered part between the first and second PCBs, reliability of products can be improved.Type: ApplicationFiled: July 15, 2009Publication date: September 8, 2011Applicant: LG Innotek Co., Ltd.Inventors: Yong Chul Kim, Chang Hwan Lee
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Patent number: 7999778Abstract: An apparatus for driving a liquid crystal display device includes a liquid crystal display panel and a controller for controlling division and latch of data, and controlling the sampling of the divided data. A data driver divides input digital data into a number of digital data under control of the controller, converts the latched digital data into a number of analog data, and then simultaneously samples the analog data to supply to the data lines.Type: GrantFiled: May 4, 2006Date of Patent: August 16, 2011Assignee: LG Display Co., Ltd.Inventor: Chang Hwan Lee
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Publication number: 20110172621Abstract: Disclosed is a cleanable and reusable body fluid-absorbing fabric pad to move moisture including sweat and urine away from the skin of a wearer, the body fluid-absorbing fabric pad including, a diffusive fabric layer coming into contact with the skin of the wearer to remove moisture from the skin, an absorbent non-woven layer coming into contact with the diffusive fabric layer, the absorbent non-woven layer comprising at least 5 wt % of a superabsorbent fiber to remove moisture transported from the diffusive fabric layer, and a waterproof film coming into contact with the absorbent non-woven layer and exhibiting waterproofing properties and breathability. The absorbent non-woven layer is formed by needle-punching or thermally bonding superabsorbent fibers, polyethylene/polypropylene bi-component fibers and rayon fibers, wherein the diffusive fabric layer, the absorbent non-woven layer and the waterproof film are stacked and sewed to form the body fluid-absorbing fabric pad.Type: ApplicationFiled: January 8, 2010Publication date: July 14, 2011Applicant: Welshire Innovative LimitedInventors: Young Kyu Lee, Kyung Ju Lee, Chang Hwan Lee, Eun Hee Kwon, Robert Farmer, Murray Fischer