Et&t Technology Co., Ltd.

Avermedia Technologies, Inc.

Avermedia Information, Inc.

Wintime Technology Inc.

Jung-Yu Chen

Wei-Lin Wang

Yung-Hsi Wu

Jiun-Shin Wu

Po-Chih Hung

Chien-Ping Sun

Yi-Te Chien

Michael Su

Kevin Sun

Johannes Liou

The frame assembly mainly contains a number of linear edge members and a number of L-shaped corner members end-to-end joining the edge members by a number of connection pieces into a rectangular frame surrounding a touch panel. Both the edge and corner members have a C-shaped cross section with a space inside for holding circuit boards of the touch panel. The circuit boards of the corner and edge members are aligned so that their connectivity by matching connectors is easily established when putting the frame assembly together.

Frame assembly for touch screen

The dimension detection system is implemented in cascaded circuit boards housed inside a frame assembly of the touch screen. After the frame assembly is assembled and powered, the dimension detection system in the circuit boards would provide horizontal and vertical feedback signals which are utilized to obtain the size of the touch screen. The size information of the touch screen could then be provided to the computer or embedded system where the touch screen is connected, preventing troublesome manual configuration. The dimension detection system and the flexible frame assembly together make the touch screen's production, storage, transportation, and usage more efficient and friendly.

A method is used with a document camera and an image display device for adjusting the image display range. The document camera includes an image synthesis controller and a graphics buffer. In the method, a first image frame and a second image frame are received by the image synthesis controller. In response to the image parallel display information, the graphics buffer is divided into a first region and a second region, and the image synthesis controller fills partial data of the first image frame and second image frame into the first region and the second region, respectively. In response to a change of the image parallel display information made by the user, the graphics buffer is divided into a third region and a fourth region, and the image synthesis controller fills partial data of the first image frame and second image frame into the third region and the fourth region, respectively. The data filled in the graphics buffer is then outputted to the image display device as a synthesized frame to be displayed.

Method for adjusting image display range of a document camera

A document camera is used to show image of an object on a display. In the document camera, a first image data of the object obtained by a video-capturing device is derived into a second image data and a third image data by an image processor in response to a zoom operation, wherein the second image data results in a zoomed image of the object and the third image data results in a scaled image of the object. In response to the zoom operation, there is also a mark frame data generated by a position information controller, which results in a mark frame. The zoomed image, scaled image and mark frame are then synthesized into a combined image by an image synthesizer, and the mark frame superimposes the scaled image to indicate a result of the zoom operation.

Document camera having zoom-indication function

A touch controlled device with a pressure sensing electronic input pen comprises a main control unit, a pressure signal processing unit, an electronic input pen, a coordinate and button signal processing unit, a touch control panel, and an output interface, etc. The main control unit serves to process the outputting signals from the pressure signal processing unit and the coordinate and button signal processing unit. The electronic input pen has a pressure sensor and a button, the pressure sensor serves to sense the force applied for being outputted with a pressure frequency signal. The touch control panel is connected to the coordinate and button signal processing unit, the tip of the electronic input pen touches the touch control panel so that the touch control panel outputs a coordinate signal and then transfers this signal to the coordinate and button signal processing unit. The coordinate and button signal processing unit processes the control signal from the button of the electronic input pen and the coordinate signal outputted from the touch control panel, the processed signals are transferred to the main control unit and which is transferred to a computer through an output interface.

Touch controlled device with pressure sensing electronic input pen

A digitizer comprising a microprocessor, a quartz oscillator, a cursor or stylus, an overlapped loop assembly, a peak phase recognizer, an analog/digit converter and other matching devices including multiplexers, amplifiers, filters and etc., wherein the overlapped loop assembly includes a plurality of loops for horizontal axis respectively starting from the left and the middle and a plurality of loops for vertical axis respectively starting from the bottom and the middle to overlap on the loops for horizontal axis forming into an induction area, the first loop for the horizontal axis at the left being connected to the first loop for the horizontal axis at the middle and the posterior loops for the horizontal axis at the left as well as the loops for the vertical axis at the bottom being respectively connected to the posterior loops for the horizontal axis at the middle and the loops for the vertical axis at the middle. The peak phase recognizer is an electric wave phase comparator to compare the output signal from the induction are induced by the oscillating source (cursor or stylus) with the reference frequency from the oscillating source and then send the comparison result thus obtained to the microprocessor for identifying which section on the overlapped loop assembly the oscillating source is allocated.

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Taipei, Taiwan

Jung-Yu Chen