Patents by Inventor Suen Kim
Suen Kim 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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Patent number: 8581511Abstract: A pulse width modulation (PWM) signal generating circuit that generates a PWM signal for a DC-DC converter using a dimming signal is provided. The PWM signal generating circuit includes a normal PWM signal generator configured to generate a normal PWM signal based on a clock signal provided to the DC-DC converter, and a compensation PWM signal generator configured to generate a compensation PWM signal based on the clock signal and the dimming signal.Type: GrantFiled: February 9, 2011Date of Patent: November 12, 2013Assignee: MagnaChip Semiconductor, Ltd.Inventors: Eung-suen Kim, Jin-sub Han, Seung-beom Baik, Chang-sik Lim
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Publication number: 20110267387Abstract: A circuit and method for driving a light emitting diode for a backlight, and a backlight driving apparatus using the same is provided. A circuit for driving a light emitting diode (LED) for a backlight includes a filtering unit configured to receive a pulse width modulation (PWM) signal and remove noise of a predetermined band, a duty stabilization unit configured to stabilize a duty of a PWM signal filtered by the filtering unit, a dimming signal generation unit configured to generate a dimming signal based on a PWM signal stabilized by the duty stabilization unit, and an LED driving unit configured to drive the LED for the backlight based on the dimming signal generated by the dimming signal generation unit.Type: ApplicationFiled: March 16, 2011Publication date: November 3, 2011Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Seung-beom Baik, Mi-jin Kim, Eung-suen Kim, Du-su Shin
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Publication number: 20110227502Abstract: A pulse width modulation (PWM) signal generating circuit that generates a PWM signal for a DC-DC converter using a dimming signal is provided. The PWM signal generating circuit includes a normal PWM signal generator configured to generate a normal PWM signal based on a clock signal provided to the DC-DC converter, and a compensation PWM signal generator configured to generate a compensation PWM signal based on the clock signal and the dimming signal.Type: ApplicationFiled: February 9, 2011Publication date: September 22, 2011Applicant: MAGNACHIP SEMICONDUCTOR, LTD.Inventors: Eung-suen Kim, Jin-sub Han, Seung-beom Baik, Chang-sik Lim
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Publication number: 20090167329Abstract: Methods and apparatus for open lamp detection in electronic circuits are disclosed. An example apparatus to perform open circuit detection associated with an electrical component included in a device disclosed herein comprises a sampling circuit to attempt to pull a sampling current through the electrical component during initialization of the device, a comparator to compare a result produced by the sampling circuit to a reference value, and a timing circuit to cause the sampling circuit to attempt to pull the sampling current through the electrical component and to cause an output of the comparator to be stored after the comparator has compared the result produced by the sampling circuit to the reference value.Type: ApplicationFiled: December 31, 2007Publication date: July 2, 2009Applicant: Texas Instruments IncorporatedInventors: Gilbert Seung-Zoo Lee, James Bumsik Cho, Eung-Suen Kim, Johnny Jin-Hui Lee
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Publication number: 20090027235Abstract: A miniature keyboard wherein the keys are arranged in a way to improve data entry and decrease the chance of depressing multiple keys at a time. Accordingly, the height of the keys are patterned to decrease the chance of multiple key depressions thus increasing the accuracy of data input into the personal digital assistant. In one embodiment, the height of the keys is alternated down the individual rows of keys. In another embodiment, the height of the keys is alternated across individual columns of keys. Similarly, in another embodiment, the heights of the keys are arranged in a checkered pattern on the keyboard. In addition, another embodiment staggers the heights of the keys and incorporates embodiments mentioned above. By incorporating different key arrangements and alternating the height of the keys, key differentiation, key navigation, and data input accuracy is greatly improved due to the improved tactile feedback provided by the miniature keyboard.Type: ApplicationFiled: May 29, 2008Publication date: January 29, 2009Inventors: Anthony Kim, Suen Kim
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Patent number: 7394456Abstract: A miniature keyboard wherein the keys are arranged in a way to improve data entry and decrease the chance of depressing multiple keys at a time. Accordingly, the height of the keys are patterned to decrease the chance of multiple key depressions thus increasing the accuracy of data input into the personal digital assistant. In one embodiment, the height of the keys is alternated down the individual rows of keys. In another embodiment, the height of the keys is alternated across individual columns of keys. Similarly, in another embodiment, the heights of the keys are arranged in a checkered pattern on the keyboard. In addition, another embodiment staggers the heights of the keys and incorporates embodiments mentioned above. By incorporating different key arrangements and alternating the height of the keys, key differentiation, key navigation, and data input accuracy is greatly improved due to the improved tactile feedback provided by the miniature keyboard.Type: GrantFiled: June 13, 2005Date of Patent: July 1, 2008Assignee: Palm, Inc.Inventors: Anthony Kim, Suen Kim
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Patent number: 7339359Abstract: An integrated circuit (IC) device includes a first function circuitry operable to perform a first function and a second function circuitry operable to perform a second function. A multi-function terminal is provided. A voltage sensing circuit is coupled to the multi-function terminal for sensing a voltage at the multi-function terminal. If the sensed voltage is above a predetermined level, the first function circuitry is activated to perform the first function. If the sensed voltage is below the predetermined level, the second function circuit is activated to perform the second function.Type: GrantFiled: March 18, 2005Date of Patent: March 4, 2008Assignee: Fairchild Semiconductor CorporationInventors: Jinho Choi, Eung-Suen Kim
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Patent number: 7289582Abstract: In an EMI canceller, a control signal generation unit includes a counter, a second flip-flop, and a multiplexer. The counter outputs first and second output signals and includes first flip-flops in series. An output of the first flip-flop reverses at every cycle of the first and second output signals of a previous first flip-flop. An output of the second flip-flop reverses at every cycle of the first or second output signal of a final first flip-flop. The second flip-flop outputs third and fourth output signals. The multiplexer passes the first output signals of the first flip-flop as a control signal when the third output signal is a first level, and passes the second output signals as the control signal when it is a second level.Type: GrantFiled: September 16, 2003Date of Patent: October 30, 2007Assignee: Fairchild Korea Semiconductor, Ltd.Inventors: Kyung-Oun Jang, Eung-Suen Kim
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Publication number: 20060209581Abstract: An integrated circuit (IC) device includes a first function circuitry operable to perform a first function and a second function circuitry operable to perform a second function. A multi-function terminal is provided. A voltage sensing circuit is coupled to the multi-function terminal for sensing a voltage at the multi-function terminal. If the sensed voltage is above a predetermined level, the first function circuitry is activated to perform the first function. If the sensed voltage is below the predetermined level, the second function circuit is activated to perform the second function.Type: ApplicationFiled: March 18, 2005Publication date: September 21, 2006Applicant: Sidley Austin Brown & Wood LLPInventors: Jinho Choi, Eung-Suen Kim
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Patent number: 6972971Abstract: A switching mode power supply includes a rectifier configured to convert AC power to a first DC power, an output unit configured to convert the first DC power to a second DC power under the control of a first switch, and a pulse width modulation generator coupled to control the first switch. The pulse width modulation generator has a regulator configured to regulate the first DC power. The regulated first DC power powers the pulse width modulation generator. The regulator includes a second switch coupled to control a transmitter so that when the second switch is in a first state the transmitter transmits the first DC power to a capacitor to charge the capacitor to thereby increase the regulated first DC power, and when the switch is in a second state the transmitter does not transmit the first DC power to the capacitor to thereby allow the charge in the capacitor to reduce and in turn the regulated first DC power to reduce.Type: GrantFiled: October 29, 2003Date of Patent: December 6, 2005Assignee: Fairchild Korea Semiconductor Ltd.Inventors: Kyung-Oun Jang, Eung-Suen Kim
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Publication number: 20050248537Abstract: A miniature keyboard wherein the keys are arranged in a way to improve data entry and decrease the chance of depressing multiple keys at a time. Accordingly, the height of the keys are patterned to decrease the chance of multiple key depressions thus increasing the accuracy of data input into the personal digital assistant. In one embodiment, the height of the keys is alternated down the individual rows of keys. In another embodiment, the height of the keys is alternated across individual columns of keys. Similarly, in another embodiment, the heights of the keys are arranged in a checkered pattern on the keyboard. In addition, another embodiment staggers the heights of the keys and incorporates embodiments mentioned above. By incorporating different key arrangements and alternating the height of the keys, key differentiation, key navigation, and data input accuracy is greatly improved due to the improved tactile feedback provided by the miniature keyboard.Type: ApplicationFiled: June 13, 2005Publication date: November 10, 2005Inventors: Anthony Kim, Suen Kim
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Patent number: 6940490Abstract: A miniature keyboard wherein the keys are arranged in a way to improve data entry and decrease the chance of depressing multiple keys at a time. Accordingly, the height of the keys are patterned to decrease the chance of multiple key depressions thus increasing the accuracy of data input into the personal digital assistant. In one embodiment, the height of the keys is alternated down the individual rows of keys. In another embodiment, the height of the keys is alternated across individual columns of keys. Similarly, in another embodiment, the heights of the keys are arranged in a checkered pattern on the keyboard. In addition, another embodiment staggers the heights of the keys and incorporates embodiments mentioned above. By incorporating different key arrangements and alternating the height of the keys, key differentiation, key navigation, and data input accuracy is greatly improved due to the improved tactile feedback provided by the miniature keyboard.Type: GrantFiled: August 27, 2001Date of Patent: September 6, 2005Assignee: palmOne, Inc.Inventors: Anthony Kim, Suen Kim
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Publication number: 20040145924Abstract: In accordance with an embodiment of the invention, a switching mode power supply includes a rectifier configured to convert AC power to a first DC power, an output unit configured to convert the first DC power to a second DC power under the control of a first switch, and a pulse width modulation generator coupled to control the first switch. The pulse width modulation generator has a regulator configured to regulate the first DC power. The regulated first DC power powers the pulse width modulation generator. The regulator includes a second switch coupled to control a transmitter so that when the second switch is in a first state the transmitter transmits the first DC power to a capacitor to charge the capacitor, and when the switch is in a second state the transmitter does not transmit the first DC power to the capacitor to thereby allow the charge in the capacitor to reduce.Type: ApplicationFiled: October 29, 2003Publication date: July 29, 2004Inventors: Kyung-Oun Jang, Eung-Suen Kim
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Publication number: 20040096020Abstract: In an EMI canceller, a control signal generation unit includes a counter, a second flip-flop, and a multiplexer. The counter outputs first and second output signals and includes first flip-flops in series. An output of the first flip-flop reverses at every cycle of the first and second output signals of a previous first flip-flop. An output of the second flip-flop reverses at every cycle of the first or second output signal of a final first flip-flop. The second flip-flop outputs third and fourth output signals. The multiplexer passes the first output signals of the first flip-flop as a control signal when the third output signal is a first level, and passes the second output signals as the control signal when it is a second level.Type: ApplicationFiled: September 16, 2003Publication date: May 20, 2004Inventors: Kyung-Oun Jang, Eung-Suen Kim