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Jeon, Gunpo-Si
Gabbae Jeon, Gunpo-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090151345 | BRAKE SYSTEM FOR VEHICLE HAVING REGENERATIVE BRAKING FUNCTION - A brake system of a vehicle with a regenerative braking function, such as a hybrid electric vehicle. A regenerative braking hydraulic pressure line connects a master cylinder with a wheel cylinder. A regenerative control valve opens and closes the regenerative braking hydraulic pressure line. A proportional control valve is disposed in the regenerative braking hydraulic pressure line. The proportional control valve includes a spool, and output characteristics of the proportional control valve vary in response to an amount of pressure applied to the spool. A spool operator changes the amount of pressure applied to the spool. | 06-18-2009 |
| 20090152071 | DECELERATION DEVICE FOR VEHICLE, ELECTRONIC PARKING BRAKE AND ELECTRONIC MOTOR BRAKE USING REDUCTION DEVICE - The present invention provides a deceleration device for a vehicle comprising a planetary gear set having three parts of a sun gear, a carrier, and a ring gear; a driving motor connected and supplying a rotational force to one of the three parts of the planetary gear set; a speed control motor connected and supplying a changed rotational force to one of the other two parts than the part connected with the driving motor in the three parts of the planetary gear set; an output shaft connected to the other one part than the two parts connected with the driving motor and the speed control motor respectively in the three parts of the planetary gear set; and a motor controller controlling the driving motor and the speed control motor, | 06-18-2009 |
Gab Bae Jeon, Gunpo-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20080210497 | BRAKE SYSTEM FOR HYBRID ELECTRIC VEHICLE AND CONTROL METHOD THEREOF - The present invention provides a brake system and its control method for a hybrid electric vehicle, comprising a driving motor generating a regenerative braking torque; a hydraulic pressure supplying unit including a brake pedal, a booster and a master cylinder, a first hydraulic line, and a reservoir; a hydraulic brake adjuster for controlling a hydraulic braking pressure; a target braking force detection unit, including a pedal stroke sensor and a hydraulic pressure sensor, for detecting a target braking torque of a driver; and a control unit controlling the driving motor by calculating a maximum regenerative braking torque based on a rotational speed of the driving motor, etc. and controlling the hydraulic brake adjuster to change a hydraulic braking torque to meet the target braking torque in accordance with the thus calculated maximum regenerative braking torque by compensating an braking torque with the hydraulic braking torque. | 09-04-2008 |
| 20100117567 | METHOD FOR CONTROL REGENERATIVE BRAKING OF ELECTRIC VEHICLE - A method for controlling regenerative braking of a vehicle includes initiating the regenerative braking, detecting an amount of slip of a wheel during the regenerative braking, if the amount of slip is increasing, reducing a regenerative braking torque, and if the amount of slip is greater than a set value, actuating an antilock brake system and reducing the regenerative braking torque or a hydraulic braking torque continuously until the vehicle is stopped. Alternatively, if the amount of slip is increasing, the regenerative braking torque is not reduced. | 05-13-2010 |
Heon Su Jeon, Gunpo-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090087143 | METHOD OF MANUFACTURING LATERALLY GRADED POROUS SILICON OPTICAL FILTER THROUGH DIFFUSION-LIMITED ETCHING AND FILTER STRUCTURE MANUFACTURED THEREBY - Disclosed herein is a method of manufacturing a laterally graded porous silicon optical filter through diffusion-limited etching. The change in resonance frequency of the porous silicon layer in a taper axis direction is adjusted using the diffusion of reactive ions in an etchant under conditions of use of a related etch mask pattern. It is possible to manufacture an optical band-pass filter having a resonance frequency that linearly changes using a tapered etch window opening. | 04-02-2009 |
| 20090091763 | MICROGYROSCOPE - A new high-performance, compact microgyroscope is implemented using a microlaser such as a microsphere laser or a microdisc laser that can be easily reduced in size. The microgyroscope includes a pumping unit for inputting pumping light for optical pumping, at least one microsphere or microdisc for oscillating a laser beam by performing optical pumping using light received from the pumping unit, an output coupler for receiving the oscillated laser beam from the microsphere or microdisc, and a photodetector for calculating a beat frequency due to interference between beams output from the output coupler to measure rotation. The pumping unit and the output coupler are constructed using a tapered optical fiber. | 04-09-2009 |
| 20100163912 | NITRIDE-BASED SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME - A nitride-based semiconductor light emitting device having an improved structure in which light extraction efficiency is improved and a method of manufacturing the same are provided. The nitride-based semiconductor light emitting device comprises an n-clad layer, an active layer, and a p-clad layer, which are sequentially stacked on a substrate, wherein the n-clad layer comprises a first clad layer, a second clad layer, and a light extraction layer interposed between the first clad layer and the second clad layer and composed of an array of a plurality of nano-posts, the light extraction layer diffracting or/and scattering light generated in the active layer. | 07-01-2010 |
| 20110068676 | LIGHT EMITTING DEVICE HAVING PHOTONIC CRYSTAL STRUCTURE - A light emitting device comprising a photonic crystal structure having a crystal structure in which nanospheres are densely arranged in a 3D manner, wherein the nanospheres have phosphors excited by an excitation source to emit light of a wavelength longer than a pump photon of the excitation source, wherein the photonic crystal structure has at least a photonic bandgap (PBG) along a specific crystal orientation, and wherein the wavelength of the pump photon overlaps a photonic bandedge region. | 03-24-2011 |
In Gyun Jeon, Gunpo-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090159935 | CMOS Image Sensor and Method for Manufacturing the Same - Disclosed are a CMOS image sensor and a method for manufacturing the same, capable of improving the characteristics of the image sensor by increasing junction capacitance of a floating diffusion area. The CMOS image sensor generally includes a photodiode and a plurality of transistors (e.g., transfer, reset, drive, and select transistors), a first conductive type semiconductor substrate, having an active area including a photodiode area, a floating diffusion area, and a voltage input/output area, a gate electrode of each transistor on the active area, a first conductive type first well area in the semiconductor substrate corresponding to the voltage input/output area, a first conductive type second well area in the semiconductor substrate corresponding to the floating diffusion area, and a second conductive type diffusion area in the semiconductor substrate at opposed sides of each gate electrode. | 06-25-2009 |