Jahwa Electronics Co., Ltd.
|Jahwa Electronics Co., Ltd. Patent applications|
|Patent application number||Title||Published|
|20140104486||CAMERA SYSTEM WITH AUTO-FOCUS FUNCTION AND CONTROL METHOD THEREOF - A camera system is provided. The camera system includes a first housing, a lens module accommodated in an inner space of the first housing, a support panel engaged to a side surface of the first housing, a magnet which is mounted on the lens module and confronts the support panel, and a drive portion which is arranged on the support panel and linearly moves the lens module in a direction of an optical axis, wherein the drive portion comprises a hall sensor portion for detecting displacement of the lens module, a coil fixed on a circuit board of the drive portion, and a controller for controlling current applied to the coil according to output of the hall sensor portion, and wherein the controller and the hall sensor portion are integrated in one chip.||04-17-2014|
|20130258172||APPARATUS AND METHOD OF CONTROLLING DRIVE OF CAMERA MODULE - The present invention discloses a drive control apparatus of a camera module and a method of controlling camera module drive. The drive control apparatus of the camera module according to an embodiment of the present invention comprises: a lens module movable along an optical axis; a first and a second stoppers defining maximum moving section of the lens module; and a controller for determining an available moving section by applying a first determined correction value to the maximum moving section so as to make the lens module to move between locations spaced from the first and second stoppers with a predetermined distance. According to the present invention, it is advantageously possible to reduce the electric current consumption when performing auto-focusing function.||10-03-2013|
|20130142503||SHUTTER DEVICE FOR CAMERA - A shutter device for a camera is provided, which effectively provides an operating space of a shutter blade and a light-amount adjuster, improves assemblability of a top cover, and improves mechanical stability according to the assembly of the top cover by modifying the geometry of the top cover. The shutter device includes a driving unit driving a shutter blade and a light-amount adjuster, the shutter device including: a base where the driving unit is installed; a first plate placed on the top of the base; a second plate disposed on the top of the first plate; a top cover including first supports bent downward and supports projecting downward, where the first supports extend to pass through the second plate and support the top surface of the first plate, and the second supports are supported on the top surface of the second plate.||06-06-2013|
|20120319506||LINEAR VIBRATION GENERATING APPARATUS - A linear vibration generating apparatus employed in a portable terminal is provided. The linear vibration generating apparatus includes a bracket, a coil inserted into the bracket, a stator inserted into the bracket and including a central yoke concentrically fixed to an interior space of the coil, a vibrator including a permanent magnet disposed to surround an outer periphery of the coil, and a resilient body fixed to the stator to support the vibrator.||12-20-2012|
|20120080623||ELECTRIC VALVE FOR REFRIGERANT CONTROL - An electric valve for refrigerant control is provided, which includes: a base; a cover adapted to cover the base; a rotor adapted to perform stepping motions in a rotating direction by means of a stator disposed outside the cover; and a drive pad rotated by receiving a rotating force from the rotor through decelerating gears, wherein the base has a first port through which a refrigerant is introduced to the space inside the cover and at least two or more second ports through which the refrigerant introduced through the first port is discharged, and the drive pad has a contact surface contacted with the surface of the base and an open surface stepped from the contact surface and forming a passage extended to the second ports in accordance with the operation of the drive pad.||04-05-2012|
|20110127247||PRE-HEATER APPARATUS FOR VEHICLE - A pre-heater apparatus for a vehicle includes a heat sink having a plurality of radiating fins which are layered, a Positive Temperature Coefficient (PTC) assembly inserted into the heat sink to be assembled therewith, and a housing. The pre-heater apparatus is mounted to a duct which is adjacent to a discharge duct, thus improving the performance of heating an interior when the vehicle is initially starting, and improving heat efficiency.||06-02-2011|
Patent applications by Jahwa Electronics Co., Ltd.