A dual-screen display method based on an android system and an intelligent display terminal
An intelligent display terminal and dual-screen display technology, which is applied in the field of communication, can solve the problems of not supporting two display screens at the same time and not being perfect enough
Active Publication Date: 2017-08-25
TCL CORPORATION
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Problems solved by technology
At present, the method of supporting dual-screen display on the Android platform is not perfect. It basically adds a DisplayHardware object describing the display screen to the system, and realizes dual-screen display and switching display screens by controlling this object and the original DisplayHardware object of the system.
However, due to the dual-screen display technology, the content displayed by the two display screens usually has its own emphasis, and the requirements for display effects are different, so the resolutions of the two display screens are usually different. Requires window resizing and does not support dual displays at the same time (i.e. only one of the two displays can be used)
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] In the Android system, the support for hardware is divided into two layers, one is user space, the other is kernel space, the kernel driver layer runs in kernel space, and the hardware abstraction layer (ie HAL) runs in user space.
[0042] The hardware abstraction layer, in simple terms, is the encapsulation of the Linux kernel driver layer program, providing an interface to the upper layer, and shielding the implementation details of the underlying layer. The kernel driver layer only provides simple access to hardware logic, such as the channel for reading and writing hardware registers. A...
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The present invention is applicable to the communication field, and provides a dual-screen display method and an intelligent display terminal based on an Android system. The method includes the following steps: respectively loading the first Gralloc module and the second Gralloc module; wherein, the first Gralloc module and the second Gralloc module are respectively loaded. The first frame buffer device is bound to the first display screen; the second Gralloc module is bound to the second frame buffer device and the second display screen; the first display screen is controlled by the first Gralloc module and the first frame buffer device display and / or control the second display screen to display through the second Gralloc module and the second frame buffer device. In this way, support for dual-screen display is realized. When the two display screens are switched to each other, the resolutions of the two screens are fixed, and there is no need to adjust the window after the screen is switched, which improves the efficiency of screen switching.
Description
technical field [0001] The invention belongs to the communication field, and in particular relates to an Android system-based dual-screen display method and an intelligent display terminal. Background technique [0002] With the continuous development and maturity of the technology in the communication field, in the increasingly popular communication equipment, especially in the intelligent display terminal (such as mobile terminal, smart TV), the application of software functions is becoming more and more abundant, and the personalized needs of users are increasing. . [0003] The Android platform has become one of the most important operating systems for smart display terminals. Although the Android platform currently directly supports single-screen display and does not directly support multiple display screens, the SurfaceFlinger service (used to manage the system frame buffer device service) in the Android system can support multiple DisplayHardware (used to describe th...
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IPC IPC(8): G06F3/14G06F9/445
Inventor 孙向作
Owner TCL CORPORATION