Touch screen projection display device

Abstract

A touch screen projection display device comprises a rear projection screen, an infrared touch frame, a projector set and a control device. The projector set projects a plurality of images to the curtain, and edges of adjacent images are overlapped. A photo sensitive assembly obtains brightness of all points of the curtain to generate corresponding sensing signals and sends the sensing signals to the control device. The control device obtains the images in the overlap areas of all the images of the curtain according to the sensing signals, the projector set is controlled to perform homogenization treatment on the brightness of all the points of the curtain according to the overlap areas, the plurality of images are combined into a seamless integral picture, the size of the curtain is extended into 120 inches to 300 inches, a large seamless curtain is realized, a displayed image is continuous and distortionless, a user can observe conveniently, and the use convenience is improved.

Description

technical field [0001] The present invention relates to the technical field of projection display, in particular to a touch screen projection display device. Background technique [0002] A projection device is a device that can project images or videos onto a screen. It can be connected to computers, VCD, DVD, BD, game consoles, DV and other devices through different interfaces to play corresponding video signals for easy viewing. Projection equipment is widely used in homes, offices, schools and entertainment venues. [0003] Traditional projection equipment includes a projector and a screen. The projector can be connected to a computer and other equipment to receive video information and generate a corresponding optical signal and project it to the screen for display. The computer is used to switch and control the displayed screen. Because the size of the screen is generally small, the displayed image is too small to meet the high-definition large-screen requirements of ...

AI Technical Summary

Problems solved by technology

Because the size of the screen is generally small, the displayed image is too small to meet the high-definition large-screen requirements of the military public security and government command centers, and the switching of display content needs to be controlled through the control terminal. Traditional projection equipment has the disadvantage of being inconvenient to use.

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