Roo
Jin Sug Roo, Changwon City KR
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20090090120 | APPARATUS AND METHOD FOR CONTROLLING LAMP OF REFRIGERATOR - Disclosed are an apparatus and a method for controlling lamps which are provided in a dispenser and a backlight of a manipulation button array. According to the present invention, at least one lamp is provided in the dispenser and an illumination sensor for sensing the surrounding brightness of a refrigerator or a sensor for detecting a user approaching the refrigerator is also provided. There is also provided a memory unit for previously storing a reference luminous intensity, the value of which is capable of being changed by the user. There is also provided a lamp driving unit for selectively controlling the brightness of the lamp by controlling the output signal thereof according to a driving control signal of a control unit. According to the present invention, the user can easily take ice or water from the dispenser because the lamp is turned on. In addition, because the reference luminous intensity can be changed and stored in relation to the surrounding brightness of the refrigerator, it is possible to control the condition for turning on or off the lamp according to the surrounding environment or the user's taste. Moreover, because the dispenser and the backlight are normally illuminated with the minimum brightness, it is easy to use the dispenser, and because the dispenser and the backlight are illuminated with the maximum brightness for a predetermined length of time and then the illumination is gradually returned to the minimum brightness or turned off, it is possible to efficiently use the dispenser. | 04-09-2009 |
Jin-Sug Roo, Gyeongsangnam-Do KR
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20080228318 | Device and Method of Controlling Dispenser For Refrigerator - The present invention relates to an device and method for controlling a dispenser for a refrigerator. The present invention comprises an input unit including a switch for generating a dispensing-start signal to initiate the dispensing of ice, water or both through the dispenser, a dispensing button for inputting an operation signal to allow ice, water or both to be selectively dispensed through the dispenser, and dispensing amount-setting and dispensing time-setting buttons for inputting an operation signal to set a dispensing time and amount per unit time of ice, water or both through the dispenser, respectively; and a control unit for receiving the dispensing-start signal from the switch and controlling ice, water or both corresponding to the dispensing amount per unit time inputted through the dispensing amount-setting button to be dispensed through the dispenser for the dispensing time inputted through the dispensing time-setting button in response to the operation signal inputted through the dispensing button. According to the present invention, there is an advantage in that ice and/or water can be selectively dispensed more conveniently. | 09-18-2008 |
Kyung Yun Roo, Daegu Metropolitan City KR
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20100045772 | METHOD AND APPARATUS FOR VIDEO CALL USING TRANSMISSION OF DIVIDED IMAGE FRAMES - A method and an apparatus for a video call using transmission of divided image frames are provided. A transmitting mobile terminal captures a still image with the first resolution at a predefined period, divides the captured image into images with the second resolution that is smaller than the first resolution, and transmits the divided images to a receiving mobile terminal. Then the receiving terminal receives the divided images at a predefined period, creates a combined image corresponding to the initial still image from the divided images, and outputs the combined image on a display unit. | 02-25-2010 |
Pierte Roo, Sunnyvale, CA US
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20100074310 | ACTIVE RESISTIVE SUMMER FOR A TRANSFORMER HYBRID - A system includes a transceiver configured to receive a composite signal. The composite signal is a composite of a transmit signal and a receive signal. A replica transmitter is configured to generate a replica transmit signal based on the transmit signal. A transmit canceller is configured to recover the receive signal at least in part by resistively summing the composite signal and the replica transmit signal. | 03-25-2010 |
20100182175 | Current Sensing and Background Calibration to Match Two Resistor Ladders - In one embodiment, a first resistor ladder includes a first voltage across the first resistor ladder. A second resistor ladder includes a second voltage across the second resistor ladder. A third resistor ladder includes a third voltage across the third resistor ladder. The calibrator receives the first voltage and third voltage and adjusts a current through the third resistor ladder to adjust the third voltage based on the received first voltage and third voltage. A buffer is configured to provide buffering for the third resistor ladder from the second resistor ladder. The third voltage of the third resistor ladder is stable even though the second voltage of the second resistor ladder is changing. | 07-22-2010 |
20100182178 | Two-Step Subranging ADC Architecture - First and second track and hold stages track and store an input voltage for a sample of an analog input signal. A coarse reference ladder provides a plurality of coarse references. In one embodiment, the coarse reference ladder includes a first coarse reference and a second coarse reference ladder. A coarse ADC performs a first comparison of the input voltage and the plurality of coarse references and outputs a coarse output based on the first comparison. A switch matrix includes a plurality of switches and is configured to close a switch corresponding to a coarse reference based on the coarse output. A fine reference ladder provides a plurality of fine references. A fine ADC performs a second comparison of the input voltage and the plurality of fine references and outputs a fine output based on the second comparison. Logic outputs a digital output for the sample of the analog input signal based on the coarse output and the fine output. | 07-22-2010 |
20120127006 | Two-Step Subranging ADC Architecture - First and second track and hold stages track and store an input voltage for a sample of an analog input signal. A coarse reference ladder provides a plurality of coarse references. The coarse reference ladder includes a first coarse reference and a second coarse reference ladder. A coarse ADC performs a first comparison of the input voltage and the coarse references and outputs a coarse output based on the first comparison. A switch matrix includes switches and is configured to close a switch corresponding to a coarse reference based on the coarse output. A fine reference ladder provides fine references. A fine ADC performs a second comparison of the input voltage and the fine references and outputs a fine output based on the second comparison. Logic outputs a digital output for the sample of the analog input signal based on the coarse output and the fine output. | 05-24-2012 |
20140266846 | METHOD AND APPARATUS FOR CONVERTING AN ANALOG SIGNAL TO A DIGITAL SIGNAL BASED ON REFERENCE VOLTAGES PROVIDED BY REFERENCE LADDERS - A circuit including first and second reference ladders, a selection circuit, first and second analog to digital converters (ADCs), and a summer. The first reference ladder is configured to provide first reference voltages via first taps. The selection circuit is configured to select one of the first reference voltages. The second reference ladder is configured to, based on the selected one of the first reference voltages, provide second reference voltages via second taps. The first ADC is configured to convert the first version of the analog input signal to a first digital signal. The second ADC is configured to, based on the second reference voltages, convert the second version of the analog input signal to a second digital signal. The summer is configured to generate a digital output signal based on the first and second digital signals. | 09-18-2014 |
Pierte Roo, Mountain View, CA US
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20100127909 | COMMUNICATION DRIVER - A circuit includes T sets of digital to analog converters (DACs), each including N current sources and M delay elements. An output signal includes a sum of outputs of the N current sources. An input of a first one of the M delay elements and a control input of a first one of the N current sources receive a respective one of a plurality of decoded signals. T sets of first converters each have a feedback node, an output, and an input that communicates with the output signal of a respective one of the T sets of DACs. T second converters have inputs that communicate with respective ones of the feedback nodes of each of the T sets of first converters. A summer generates a difference signal that is based on the outputs of the T sets of first converters and outputs of the T second converters. | 05-27-2010 |