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Android double-screen extraordinary image display method

A display screen and display content technology, applied in the direction of digital output to display devices, etc., can solve problems such as display difficulties, Android advantages cannot be used, and secondary screens cannot be operated, so as to achieve the effect of efficient display output function

Inactive Publication Date: 2014-10-29
SHANGHAI DONGQIAN TECH DEV
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The advantage of this method is that it is easy to implement, but the disadvantage is obvious, that is, it is inconvenient for application developers to use the secondary screen, and the secondary screen cannot be operated through the existing Android programming interface, and the advantages of Android cannot be utilized.
This shortcoming makes it very difficult for programmers to output a piece of text or display a picture on the secondary screen.

Method used

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  • Android double-screen extraordinary image display method
  • Android double-screen extraordinary image display method

Examples

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Embodiment Construction

[0019] attached figure 2 It is a specific embodiment of the present invention. Attached below figure 2 The present invention is further described in detail.

[0020] figure 2 It is a frame diagram of the Android and Linux display systems in the dual-screen image embodiment. The part framed by the dotted line is different from the attached figure 1 The newly added content is to realize the dual-screen vision of the single-screen system.

[0021] Depend on figure 2 As mentioned above, a secondary screen frame buffer driver is added to the Linux kernel. The Android framework displays the server part of the system, adding a DisplayHardware object and a Surfaceflinger object for the secondary screen respectively.

[0022] Adding a Surfaceflinger object is obtained by adding a Surfaceflinger service in the instantiate process of Surfaceflinger.

[0023] Depend on figure 2 As mentioned above, the Android framework displays the client part of the system and adds a...

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Abstract

The invention provides a method for achieving a double-screen extraordinary image displaying function on an Android platform. The method comprises the steps of adopting two display screens on the Android platform, wherein one display screen is a main screen, the other display screen is an auxiliary screen, and the main screen and the auxiliary screen are independent physically and can have different resolution ratios and sizes and be provided with different data transmission interfaces; establishing two frame buffer drives in a Linux kernel; establishing two DisplayHardware objects on the server-side of an Android frame display system and starting two display screens; establishing service of two Surfaceflinger on the server-side of the Android frame display system, wherein each Surfaceflinger represents one screen and is used for invoking of an Android client-side; establishing two SurfaceComposerClient objects on the client-side of the Android frame display system, wherein each SurfaceComposerClient object is connected with one corresponding Surfaceflinger; making Android application program to be capable of displaying different contents on two display screens; configuring standard Android application program interferences for the Android application program so as to output display elements on two display screens, wherein the standard Android application program interferences are seamlessly compatible with native Android application program development interfaces.

Description

technical field [0001] The invention relates to the field of the Android-based electronics industry, in particular to a method for simultaneously using two display screens on the Android platform and displaying different contents on the two screens. Background technique [0002] Android is an open source mobile phone and tablet operating system developed by Google Inc. in the United States. The Android operating system runs on the Linux operating system, that is, electronic devices such as Android-based mobile phones or tablet computers, and the underlying layer runs the Linux kernel and related Linux device drivers. With the growing maturity of the Android operating system, the application of Android has also expanded from consumer electronic products such as mobile phones and tablet computers to more industrial applications, such as automotive multimedia devices, medical equipment, and electrical equipment. The application in different industries has also given rise to t...

Claims

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Application Information

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IPC IPC(8): G06F3/14
Inventor 陈志炜刘金权
Owner SHANGHAI DONGQIAN TECH DEV
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