Projection method and device

A projection and terminal technology, applied in the field of projection, can solve the problems of high material cost and low projection efficiency

Active Publication Date: 2016-10-26
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the prior art usually has the problems of high material cost and low projection efficiency

Method used

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  • Projection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] figure 1 It is a flowchart of a projection method provided by the embodiment of this application.

[0056] Such as figure 1 The shown projection method is applied to the first terminal, where the first terminal includes a GPIO (General Purpose Input Output, general purpose input / output), where the GPIO may also be called a bus expander. Moreover, a projection sending end is also set on the first terminal.

[0057] Such as figure 1 As shown, the method includes:

[0058] S101. When it is determined that it is in the power-on state, obtain the detection signal output by the second terminal connected to it, and the second terminal is provided with a projection receiving end;

[0059] In this embodiment of the present application, preferably, the first terminal is a mobile terminal or a desktop computer. Wherein, the mobile terminal is a notebook computer, a tablet computer, a mobile phone, a Stick PC, and the like.

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Abstract

The invention provides a projection method and device. The method and the device are applied to a first terminal. The first terminal comprises a general purpose input / output GPIO. A projection sending end is arranged on the first terminal. When the first terminal is in a power-on state and a second terminal connected with the first terminal satisfies a preset state switch demand, the GPIO is controlled to output electrifying signals, thereby electrifying the projection sending end and a projection receiving end on the second terminal; after the projection sending end and the projection receiving end are electrified, the GPIO is controlled to output a paring signal, thereby pairing the projection sending and the projection receiving end; and after pairing is carried out successfully, the second terminal receives and outputs a video signal sent by the first terminal, thereby carrying out projection display. According to the method and the device, the problem that in the prior art, physical switches are arranged for the first terminal and the second terminal, and the first terminal and the second terminal only can be paired by pressing the two physical switches at the same time is avoided; on the basis of realizing a projection technology, the material cost required by realization of the projection technology is reduced; and the projection efficiency is improved.

Description

technical field [0001] The present application relates to the field of projection technology, in particular to a projection method and device. Background technique [0002] With the improvement of people's living standards, the requirements for visual experience produced by video display are getting higher and higher. Therefore, the application of projection technology in video display is becoming more and more extensive. [0003] Although the existing technology can realize the projection technology by connecting the terminal to the projector, but this method often requires setting a physical switch on the terminal and the projector respectively, and pressing the physical switches on the terminal and the projector at the same time can be realized. The pairing between the terminal and the projector can realize the purpose of the projector receiving and outputting the video signal sent by the terminal for projection display. Therefore, the prior art usually has the problems...

Claims

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Application Information

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IPC IPC(8): H04N9/31
CPCH04N9/31H04N9/3141
Inventor 吴彦永
Owner LENOVO (BEIJING) CO LTD
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