Lextar Electronics Corporation

Wistron Corporation

Pegatron Corporation

Chun-Wei Wang

Bo-Yu Ko

Pei-Song Cai

Shing-Kuo Chen

Jian-Chin Liang

Chien-Yi Wu

Shou-Te Wei

Chia-Te Chou

Yun-Yi Tien

Chin-Chang Hsu

I-Shu Lee

Kuo-Wei Huang

Chun-Chih Chen

Tzu-Pu Lin

Hau-Yuen Tan

Sheng-Pei Lin

Feng-Jung Hsu

Chia-Ho Ting

Yee-Cheng Chang

Tsai-Yu Chen

An antenna module is disclosed. The antenna module is applied to a mobile communication device and includes a first radiating element and a second radiating element. The first radiating element is disposed on a base board inside the mobile communication device, and one point of the first radiating element is a feed point of the antenna module. The second radiating element is disposed on the base board and is grounded by connecting to a P-sensor inside the mobile communication device. There is a gap between one part of the second radiating element and the first radiating element.

Antenna module and mobile communication device having the same

A signal strength distribution establishing method includes establishing a plurality of distribution functions corresponding to a plurality of base stations; measuring a plurality of signal strengths from the plurality of base stations on at least a measuring location in an area to obtain a plurality of signal strengths measured values; adjusting the plurality of distribution functions according to the plurality of signal strengths on the at least a measuring location; computing a plurality of signal strength estimated values corresponding to a plurality of locations within the area according to the plurality of adjusted distribution functions; and establishing a signal strength distribution map corresponding to the area according to the plurality of signal strength measured values and the plurality of signal strength estimated values.

Signal strength distribution establishing method and wireless positioning system

Lead frame for light-emitting diode

A digital signage playback system, a monitoring system, and a monitoring method thereof are disclosed. The digital signage playback system is used for providing a digital signage to display at a user side, wherein the digital signage includes a dynamic video file and a static image file. The digital signage playback system includes an image converter, a transport, and a video streaming converter. The image converter is used for analyzing the digital signage to convert the static image file into a compressed image file and transmit to a monitoring side via the transport. The video streaming converter is used for converting the dynamic video file into a streaming video file to the monitoring side so as to displaying the compressed image file and the streaming video file at the monitoring side.

Digital signage playback system, monitoring system, and monitoring method thereof

A LED device is provided. The LED comprises a frame, a housing, a LED chip and a protection component. The frame comprises a first lead frame and a second lead frame disposed along a first direction and isolated from each other. The housing partially covers the first and second lead frames, and has a receiving portion exposing parts of the surfaces of the first and second lead frames. The LED chip is disposed in the receiving portion on the exposed surface of the first lead frame, and electrically connected to the first and second lead frames. The protection component is disposed on a surface of the second lead frame that is covered by the housing and electrically connected to the first lead frame. None of the sides of a vertical projection of the protection component on the second lead frame is parallel or perpendicular to the first direction.

LED device and LED lamp using the same

A light emitting diode module includes a lead frame, a first light emitting diode chip, a second light emitting diode chip, an encapsulant, and a lens structure. The lead frame has a die-bonding surface and a side wall together defining an accommodating recess. The encapsulant is filled in the accommodating recess, and covers the first and the second light emitting diode chips. The lens structure disposed on the lead frame has a bottom surface, a reflective surface, a first, a second, a third, and a fourth light emitting curved surface. The light emitting curved surfaces are respectively disposed opposite to the bottom surface. An adjacent position among the light emitting curved surfaces is a lowest point nearest to the bottom surface. The first and the second light emitting diode chips are disposed at the projections of the first and the second light emitting curved surface on the die-bonding surface.

Light emitting diode module

A method for calibrating the accuracy of an optical touch monitor is provided. The optical touch monitor has a first lens and a second lens disposed at the same side of the optical touch monitor and faced towards the other side thereof. In the present method, one of a plurality of control points (CPs) on the optical touch monitor is touched by using a touch object. A first position and a second position of the touch object in images captured by the first lens and the second lens are substituted into a non-linear transformation function to calculate a weight matrix for system transformation. When the touch object touches a touch point on the optical touch monitor, a touch position of the touch object on the optical touch monitor is detected and transformed into screen coordinates of the optical touch monitor by using the weight matrix and the non-linear transformation function.

Method for calibrating accuracy of optical touch monitor

A portable optical touch system is disclosed in the present invention. The portable optical touch system includes two camera devices movably connected with each other and respectively disposed on two corners of a plane. Each camera device includes an imaging module for capturing an image of an object on the screen, an adjusting module connected to the imaging module for determining whether the two imaging modules are positioned on the same plane, and a measuring module connected to the imaging module for calculating a distance between the two imaging modules. The portable optical touch system further includes a controlling unit electrically connected to the camera device for calculating a coordinates of the object on the plane by analyzing the distance between the imaging modules and the images captured by the imaging modules.

Portable optical touch system and operating method thereof

Light emitting diode package

An optical touch display, a calibration apparatus, and a calibration method thereof are disclosed. The calibration method is used for calibrating the optical touch display, and the optical touch display has a plurality of image detecting sensors. The calibration method includes the following steps: generating a plurality of calibration points; generating a plurality of representative calibration points from the plurality of calibration points; obtaining a first image position of each representative calibration point via the plurality of image detecting sensors; constructing a coordinate transformation mechanism for transforming the first image position into a first screen position; calculating a relative position between the representative calibration points and its neighboring calibration points; calculating a second image position of each calibration point based on the relative position; and calculating a second screen position by using the transformation mechanism and the second image position.

Optical touch display, a calibration apparatus and a calibration method thereof

A light-emitting diode (LED) package comprising a carrier, an LED chip and a phosphor glue is provided. The carrier has a recess, an upper surface, and a ring-shape rough surface connected to a top edge of the recess. The LED chip is disposed within the recess. The phosphor glue fills up the recess and over the upper surface of the carrier. An edge of the phosphor glue contacts the ring-shape rough surface.

Light-emitting diode package

A light-emitting diode has a metal structure, a light-emitting chip, and a bowl structure. The metal structure has a platform and a heat sink. The platform has a top face, a first side, and a second side opposite to the first side. A first reflector and a second reflector respectively extend from the first side and the second side. The heat sink extends below the top face and has a drop from the bottom surfaces of the first reflector and the second reflector. The light-emitting chip is disposed on the top face. The bowl structure covers the outer surface of the metal structure and shields the bottom surfaces of the first reflector and the second reflector. A thermal dispassion surface of the heat sink is exposed from the bowl structure. An inner surface of bowl wall has a plurality of reflection structures to promote the light extraction efficiency.

Growing community of inventors

Taipei, Taiwan

Chun-Wei Wang