Patents by Inventor Tai To Lee

Tai To 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: 20120091816
    Abstract: In one embodiment, a power system includes a first power source having a first voltage, a second power source having a second voltage, and a controller. The controller is coupled to the first power source and the second power source. The controller compares the first voltage with the second voltage, controls the first power source to charge the second power source via a first switch and a second switch in a charging mode when the first voltage is greater than said second voltage, and controls the second power source to power a load such as a light-emitting diode (LED) light source via the second switch and a third switch in a load-powering mode when the second voltage is greater than the first voltage.
    Type: Application
    Filed: November 4, 2011
    Publication date: April 19, 2012
    Applicant: O2MICRO, INC.
    Inventors: Da LIU, Sheng-Tai LEE, Ju-Yuan HSIAO, Chang-Yi LIN
  • Patent number: 8143800
    Abstract: A circuit for driving a load includes a power line, converter circuitry, and a controller. The power line is operable for providing an input current and an input voltage. The converter circuitry coupled to the power line is operable for converting the input voltage to a regulated voltage to drive the load, and for providing a current detection signal indicating whether a converter current flowing through the converter circuitry drops to a predetermined level. The controller coupled to the converter circuitry is operable for correcting a power factor of the circuit based on the current detection signal and the input voltage such that a waveform of the input current follows a waveform of the input voltage.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: March 27, 2012
    Assignee: O2Micro, Inc.
    Inventors: Da Liu, Ching-Chuan Kuo, Sheng-Tai Lee
  • Patent number: 8126081
    Abstract: A signal modulation apparatus, a signal modulation method and a computer program product thereof are provided. The signal modulation apparatus is used in a communication framework consisting of a plurality of communication systems. The communication systems comprise a first communication system having a first antenna and a second communication system having a second antenna. The signal modulation apparatus is configured to generate isolation information to modulate a power of a first antenna according to specification information of the first communication system, specification information of the second communication system, information of the first antenna, information of the second antenna, distance information of the first antenna and the second antenna, and test information.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: February 28, 2012
    Assignee: Institute for Information Industry
    Inventors: Hua-Chiang Yin, Hsien-Wei Tseng, Yang-Han Lee, Yih-Guang Jan, Yun-Hsih Chou, Ming-Hsueh Chuang, Hsi-Chun Tseng, Chih-Hsiang Tseng, Youn-Tai Lee
  • Patent number: 8126393
    Abstract: A gain adjustment apparatus, a gain adjustment method, and a tangible machine-readable medium thereof for a multiple input multiple output (MIMO) wireless communication system are provided. The MIMO wireless communication system comprises source antennas, destination antennas, relay stations (RSs) and a relay transmission power limit value. The gain adjustment method comprises the following steps: adjusting the gain of one single RS according to a gain calculation; multiplying the gains of other relay stations by a scaling value for adjustment. According to aforesaid method, the present invention can increase the system capacity of the MIMO wireless communication system.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: February 28, 2012
    Assignee: Institute for Information Industry
    Inventors: Chun-Jung Wu, David W. Lin, Youn-Tai Lee, Yi-Ting Lin
  • Patent number: 8107884
    Abstract: A base station (BS), a subordinated station (SS) and the transmission methods thereof for use in a multi-input multi-output (MIMO) network are provided. The BS stores resource allocation information about the MIMO network and an SS list, and generate a super frame according to the resource allocation information and the SS list. The super frame comprises a pilot pattern which comprises a plurality of pilots and data. The BS and SS both considers the pilot pattern as an identifier of the SS. When there are communications occurred between the BS and the SS, the BS/SS will confirm whether the pilot pattern of the super frame matches the identifier of the SS to reduce interference from other stations in the MIMO network.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: January 31, 2012
    Assignee: Institute for Information Industry
    Inventors: Yang-Han Lee, Yih-Guang Jan, Ming-Hsueh Chuang, Hsien-Wei Tseng, Jheng-Yao Lin, Wei-Chen Lee, Wei-Chieh Tseng, Hsi-Chun Tseng, Ting-Chien Wang, Po-Jung Lin, Shiann-Tsong Sheu, Yung-Ting Lee, Youn-Tai Lee, Hua-Chiang Yin
  • Patent number: 8107005
    Abstract: Provided is an image sensor module including a lower substrate having a plurality of top pads formed on the top surface thereof; an upper substrate that is installed along the edge of the top surface of the lower substrate and has a plurality of connection grooves formed on the inner side surface thereof, each connection groove having a side pad corresponding to each of the top pads of the lower substrate; an image sensor installed on the top surface of the upper substrate; and a connection element that electrically connects the top pads and the side pads.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: January 31, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Kyoung Tai Lee
  • Publication number: 20110318288
    Abstract: Disclosed herein is a skin-whitening cosmetic composition comprising an extract of Magnolia sieboldii as an active ingredient. The Magnolia sieboldii extract has an excellent effect of inhibiting tyrosinase activity and melanin production, and the cosmetic composition comprising the Magnolia sieboldii extract as an active ingredient has an excellent skin-whitening effect.
    Type: Application
    Filed: November 30, 2007
    Publication date: December 29, 2011
    Applicant: COREANA COSMETICS CO., LTD.
    Inventors: Ghang Tai Lee, Jung Noh Lee, Song Yi Lee, Seung Ji Lee, Kun Kook Lee
  • Patent number: 8058809
    Abstract: A circuit comprises a power tank, a pair of transformers and multiple loads. The power tank converts a DC input voltage to an AC voltage. The pair of transformers comprise a pair of primary windings and a pair of secondary windings and transform the intermediate AC voltage to an output AC voltage. The pair of primary windings are coupled to the power tank for receiving the intermediate AC voltage, and the pair of secondary windings provide the output AC voltage. The loads are coupled to the pair of secondary windings for receiving the output AC voltage. The pair of secondary windings are serially coupled to each other through the series-coupled loads to achieve current balance among the loads.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: November 15, 2011
    Assignee: O2Micro, Inc.
    Inventors: Youling Li, Sheng Tai Lee, Yingpeng Hu
  • Patent number: 8054001
    Abstract: A circuit structure for LCD backlight is disclosed in the present invention. The circuit structure includes an inverter topology, a current balance circuit, and a plurality of loads. The current balance circuit is coupled to the plurality of loads and capable of balancing current of N loads by using N/2?1 balance chokes. The circuit structure may further include a protection circuit which is coupled to the low voltage sides of the plurality of loads. The protection circuit is capable of sensing lamp voltages and providing a feedback signal to a controller. Furthermore, the protection circuit is composed of count-reduced and cost-competitive electronic elements.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: November 8, 2011
    Assignee: O2Micro Inc
    Inventors: Xiaojun Wang, Sheng-Tai Lee, Youling Li, Da Liu, Ru Guo
  • Patent number: 8027689
    Abstract: A method, a wireless communication system, a tangible machine-readable medium, and a communication apparatus for transmitting a bandwidth (BW) allocation based on a multi-hop relay standard are provided. The wireless communication system comprises a BS and at least one RS. The BS transmits the at least one particular channel descriptor to the at least one RS. The least one RS transmits at least one Ack to the BS for replying the at least one particular channel descriptor. Finally, the BS transmits the at least one BW allocation to the at least one RS according to the at least one Ack in a predetermined interval.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: September 27, 2011
    Assignee: Institute for Information Industry
    Inventors: Chih-Chiang Hsieh, Shiann-Tsong Sheu, Hua-Chiang Yin, Youn-Tai Lee, Kan-chei Loa, Yung-Ting Lee, Yi-Hsueh Tsai, Frank Chee-Da Tsai, Heng-Iang Hsu
  • Publication number: 20110221346
    Abstract: Embodiments in accordance with the present invention provide circuits and methods for driving light sources, e.g., a light-emitting diode (LED) light source. In one embodiment, a printed circuit board (PCB) includes a bridge rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a first switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the first switch coupled in series receive the rectified AC voltage while the first switch is controlled linearly.
    Type: Application
    Filed: April 28, 2011
    Publication date: September 15, 2011
    Applicant: O2Micro, Inc.
    Inventors: Sheng Tai LEE, Yung Lin LIN, Chuan Chiung KUO
  • Publication number: 20110212557
    Abstract: The present invention is an array substrate for use in a liquid crystal display device, which includes a gate electrode, a gate line and a gate pad on a substrate, wherein the gate electrode, the gate line and the gate pad have a double-layered structure consisting of a first metal layer and a first barrier metal layer in series from the substrate, and wherein the first metal is one of aluminum and aluminum alloy; a gate insulation layer on the substrate covering the gate electrode, gate line and gate pad; an active layer and an ohmic contact layer sequentially formed on the gate insulation layer and over the gate electrode; a data line on the gate insulation layer perpendicularly crossing the gate line, source and drain electrodes contacting the ohmic contact layer, and a data pad on the gate insulation layer, wherein the data line, the source and drain electrode and the data pad have a double-layered structure consisting of a second barrier metal layer and a second metal layer of copper; a passivation layer
    Type: Application
    Filed: May 4, 2011
    Publication date: September 1, 2011
    Inventors: Won-Ho CHO, Gyoo-Chul Jo, Gue-Tai Lee, Jin-Gyu Kang, Beung-Hwa Jeong, Jin-Young Kim
  • Patent number: 7977128
    Abstract: An etchant for forming double-layered signal lines and electrodes of a liquid crystal display device includes hydrogen peroxide (H2O2), a phosphate, F-ions, an organic acid having a carboxyl group (—COOH), a copper (Cu) inhibitor, and a hydrogen peroxide (H2O2) stabilizer, wherein each of the double-layered signal lines and electrodes of the liquid crystal display device includes a first layer of one of aluminum (Al), aluminum alloy (Al-alloy), titanium (Ti), titanium alloy (Ti-alloy), tantalum (Ta), and a tantalum alloy (Ta-alloy) and a second layer of copper (Cu).
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: July 12, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Won-Ho Cho, Gyoo-Chul Jo, Gue-Tai Lee, Jin-Gyu Kang, Beung-Hwa Jeong, Jin-Young Kim
  • Patent number: 7970343
    Abstract: A method, a wireless communication system, a tangible machine-readable medium, and a communication apparatus for transmitting and relaying a channel descriptor based on a multi-hop relay standard are provided. The wireless communication system comprises a BS and at least one RS. The BS divides the channel descriptor into a common channel descriptor and at least one particular channel descriptor. Then the BS broadcasts/multicasts the common channel descriptor to the at least one RS and transmits the at least one particular channel descriptor to the same. The at least one RS combines the common channel descriptor and the at least one particular channel descriptor to generate the channel descriptor.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: June 28, 2011
    Assignee: Institute for Information Industry
    Inventors: Chih-Chiang Hsieh, Shiann-Tsong Sheu, Hua-Chiang Yin, Youn-Tai Lee, Kan-chei Loa, Yung-Ting Lee, Yi-Hsueh Tsai, Frank Chee-Da Tsai, Heng-Iang Hsu
  • Publication number: 20110133645
    Abstract: A light source driving circuit for powering multiple light sources in a vehicle includes multiple current limiters and a balance controller. The current limiters are coupled to the light sources for adjusting currents of the light sources respectively. The balance controller coupled to the current limiters can control the current limiters such that a current flowing through each of the light sources is substantially the same as a first target current. Moreover, the balance controller can control the current limiters in response to a brake of the vehicle such that a current flowing through each of the light sources is substantially the same as a second target current.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 9, 2011
    Inventors: Ching-Chuan KUO, Sheng Tai Lee
  • Patent number: 7956949
    Abstract: An array substrate in a liquid crystal display device includes a gate electrode, a gate line and a gate pad on a substrate, wherein the gate electrode, the gate line and the gate pad have a double-layered structure consisting of a first metal layer and a first barrier metal layer in series from the substrate, and wherein the first metal is one of aluminum and aluminum alloy; a gate insulation laver; an active layer and an ohmic contact layer; a data line, source and drain electrodes, and a data pad each having a double-layered structure consisting of a second barrier metal layer and a second metal layer of copper; a passivation layer; and a pixel electrode, a gate pad terminal and a data pad terminal on the passivation layer formed of a transparent conductive material.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: June 7, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Won-Ho Cho, Gyoo-Chul Jo, Gue-Tai Lee, Jin-Gyu Kang, Beung-Hwa Jeong, Jin-Young Kim
  • Patent number: 7948475
    Abstract: A key control apparatus for a portable terminal including a first housing with first and second display units and a second housing with first and second key input units is provided. The key control apparatus includes a first key input unit, a second key input unit and a control unit. The first key input unit includes a plurality of touch-sensitive touch keys for implementing given functions, one or more mechanical keys, and a plurality of sensors for sensing the touching of the touch keys and implementing a scroll function. The second key input unit includes a plurality of mechanical keys for implementing given functions or functions corresponding to the keys arranged on the first key input unit. The control unit controls the apparatus so that when a touch key in the first key input unit is touched, a function given to the touch key is implemented.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: May 24, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seng-Tai Lee, Seok-Hyo Park
  • Publication number: 20110117227
    Abstract: Provided is a cosmetic composition for skin protection containing Phaseolus radiatus extract of fermentation-enzyme treatment, prepared by fermenting Phaseolus radiatus with Saccharomyces cerevisiae or Lactobacillus and treating thereof with protease as an active ingredient, and a make-up method using the same. The Phaseolus radiatus extract of fermentation-enzyme treatment of the present invention contains higher isoflavone and has activities of increasing skin cell activity, alleviating skin irritation, and accelerating synthesis of skin cell protein such as collagen, so that it brings the effect of improving skin troubles caused by aging and protecting skin as well.
    Type: Application
    Filed: July 31, 2008
    Publication date: May 19, 2011
    Applicant: COREANA COSMETICS, CO., LTD.
    Inventors: Ghang Tai Lee, Jung Noh Lee, Young Kyoung You, Kwang Sik Lee, Seung Ji Lee, Kun Kook Lee
  • Patent number: 7923061
    Abstract: A method of manufacturing safety cones from recycled materials is disclosed. Recycled materials are disposed into a molding machine, which turns them into safety cone molds. A dye containing plastic powders, solvent, and colors is coated on the surface of the safety cone mold, rendering a colored safety cone. Therefore, the production cost can be reduced, and the color can stay longer.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: April 12, 2011
    Inventor: Chin-Tai Lee
  • Patent number: D648663
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: November 15, 2011
    Inventor: Cheng Tai Lee