Jong Rak
Jong Rak Kim, Suwon-Si KR
Patent application number | Description | Published |
---|---|---|
20090243776 | MULTI-OUTPUT TRANSFORMER - In accordance with the present invention, a multi-output transformer includes a primary bobbin provided with one primary winding unit with one input terminal and one ground terminal; a secondary bobbin provided with n(n: positive integer) number of secondary winding units with two output terminals respectively; a primary coil wound around the one primary winding unit; secondary coils wound around each of the n secondary winding units; and a pair of cores inserted into insertion holes formed inside the primary bobbin and the secondary bobbin respectively to separate the primary bobbin and the secondary bobbin. | 10-01-2009 |
20100253243 | LAMP DRIVING CIRCUIT - The present invention provides a lamp driving circuit including a first printed circuit board and a second printed circuit board, wherein the first printed circuit board includes a switching unit for switching an input power source; a control unit for controlling the switching unit; an inverter transformer connected to the switching unit; and a voltage conversion unit for converting a feedback reference current for controlling an output current applied from the inverter transformer into a reference voltage to apply the reference voltage to the control unit by being connected to the inverter transformer, the voltage conversion unit is connected to a first feedback terminal, and the second printed circuit board includes a plurality of balance coils connected to a plurality of lamps so that the same output currents are applied to the lamps; and a current conversion unit connected to a second feedback terminal. | 10-07-2010 |
20100320921 | Light emitting device driving apparatus and method for driving the same - The present invention relates to a light emitting device (LED) driving apparatus that constantly maintains the average current flowing onto a plurality of channels. The light emitting device (LED) driving apparatus includes: a LED light source unit in which at least one LED channel is connected in parallel; at least one current detector that is disposed on a low end of a LED channel of the LED light source unit to detect the current flowing onto respective LED channels; at least one channel current controller that generates control signal controlling the average current of the channels by comparing current detected from the channels with reference wave; and a switching element that controls the average current of the LED channels in a PWM scheme according to the control signals. | 12-23-2010 |
Jong Rak Kim, Ulsan KR
Patent application number | Description | Published |
---|---|---|
20130341972 | ROLLER BLIND APPARATUS FOR PANORAMIC SUNROOFS - A roller blind apparatus for panoramic sunroofs, in which front and rear roller blinds can be opened or closed by respective motors, thereby providing more convenience to a user. The apparatus includes front and rear roller blinds; a first drive means generating drive power for opening or closing the front roller blind; a second drive means generating drive power for opening or closing the rear roller blind such that the rear roller blind can be operated separately from the front roller blind; a power transmission unit that transmits the drive power of the first drive means so as to allow a moving glass to be operated in conjunction with the opening/closing motion of the front roller blind; and a control unit that controls a supply of electric power to the first and second drive means so as to control the motions of the front and rear roller blinds. | 12-26-2013 |
20130341973 | TWO-WAY INTERLOCK SLIDING SYSTEM AND ROLLER BLIND APPARATUS HAVNIG THE SAME - A two-way interlock sliding system and a roller blind apparatus having the system, which has a power transmission unit causing two drive units to interlock-slide using one motor, thereby realizing a simple construction of the apparatus. The roller blind apparatus includes a front roller blind provided in a sunroof of a vehicle, a rear roller blind interlocked with the front roller blind so as to be opened or closed simultaneously with the front roller blind; a drive means generating drive power; a moving glass operated in conjunction with opening or closing motions of the two roller blinds; a power transmission unit for transmitting the power of the drive means such that the moving glass can be operated in conjunction with the opening or closing motions of the two roller blinds; and a control unit for controlling the drive means so as to control operations of the two roller blinds. | 12-26-2013 |
20140062144 | HYBRID COMBINATION STRUCTURE OF ROOF FRAME - A hybrid combination structure of a roof frame is provided. In particular, the hybrid combination structure of a roof frame is configured to include a roof frame made of a plastic material, a front reinforce panel made of a steel material and mounted at a front of the roof frame, a center reinforce panel made of a steel material and mounted at a middle of the roof frame, and a rear reinforce panel made of a steel material and mounted at a rear of the roof frame to provide the integral roof frame in which steel and plastic are combined with each other, thereby improving sag and torsion problems to improve support rigidity and reducing weight and costs to improve a value of the product. | 03-06-2014 |
Jong Rak Park, Gwangju KR
Patent application number | Description | Published |
---|---|---|
20140285328 | LASER APPARATUS CAPABLE OF CONTROLLING A PHOTO-MECHANICAL EFFECT AND METHOD USING THE SAME - The present invention relates to a laser apparatus for inducing a photo-mechanical effect. More particularly, the present invention relates to a laser apparatus for outputting a pulsed laser beam and inducing a photo-mechanical effect by controlling pulse energy of the pulsed laser beam. | 09-25-2014 |