WO2015184784A1 - 一种后台投影方法及装置 - Google Patents
一种后台投影方法及装置 Download PDFInfo
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- WO2015184784A1 WO2015184784A1 PCT/CN2014/095694 CN2014095694W WO2015184784A1 WO 2015184784 A1 WO2015184784 A1 WO 2015184784A1 CN 2014095694 W CN2014095694 W CN 2014095694W WO 2015184784 A1 WO2015184784 A1 WO 2015184784A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
Definitions
- the present invention relates to the field of communications, and in particular, to a background projection method and apparatus.
- Intelligent micro-projection products refer to projectors that have added wireless wifi access and are equipped with intelligent operating systems.
- the Android system is currently used in a wide range of intelligent operating systems. Support multi-screen interaction, can be shared with Android phones, Android PAD, iPhone, iPad, etc.; support one-click hotspot AP and WIFI DIRECT; multi-USB interface, support USB keyboard and mouse, etc.; small size, easy to operate, multi-function, multi- Support, portable belt and other features.
- the technology of intelligent projection is also constantly improving, and the functions will be continuously improved.
- Screen sharing technology appears behind a graphical user interface (GUI).
- GUI graphical user interface
- the purpose of screen sharing is to reproduce the interface display of the host screen on the remote client. Or it comes up with the concept of a virtual terminal, making the remote user feel like sitting next to the host.
- Currently used screen sharing technologies include Wifi Display and Apple Play for the Apple series.
- the smart micro-projection product opens the projection
- most of the data projection on the current physical screen is released in real time
- the mobile phone is connected with the micro-projection product through the screen sharing
- the user wants to project the screen of the shared mobile phone. Going out, the physical screen on the projection product can do other things at the same time.
- the projection product can only project the data on the current physical screen, and the user experience is not high.
- the embodiment of the invention provides a background projection method and device, which are used to solve the above technology. Problems.
- An embodiment of the present invention provides a background projection method, which includes: establishing a data sharing connection between a projection device and a source device; determining to enable data from the source device after the background projection function is turned on; and acquiring the source The data of the device is projected and displayed on the projection device.
- the method further includes: after determining to turn off the background projection function, receiving data sent by the projection system; and displaying the received data of the projection system on the projection device.
- the method further includes: stopping receiving data sent by the projection system.
- determining whether the background projection function is turned on or off by: monitoring the broadcast message; wherein the broadcast message is used to broadcast the background projection function on or off; or performing the background projection function on or off through the API interface; or Polling the global variable value; wherein the global variable value is set to indicate that the background projection function is turned on or off.
- the method further comprises: projecting a specified image on the projection device; wherein the specified image is used to prompt the user to switch the projected content.
- the embodiment of the present invention further provides a background projection apparatus, wherein the apparatus comprises: a connection establishment module, configured to establish a data sharing connection between the projection device and the source device; and a data acquisition module configured to: after determining to enable the background projection function, Acquiring data from the source device; the background data projection module is configured to display the acquired data of the source device on the projection device.
- a connection establishment module configured to establish a data sharing connection between the projection device and the source device
- a data acquisition module configured to: after determining to enable the background projection function, Acquiring data from the source device; the background data projection module is configured to display the acquired data of the source device on the projection device.
- the device further includes: a system data receiving module, configured to receive data sent by the projection system after determining to turn off the background projection function; and a system data projection module, configured to receive the projection system Data is projected on the projection device.
- a system data receiving module configured to receive data sent by the projection system after determining to turn off the background projection function
- a system data projection module configured to receive the projection system Data is projected on the projection device.
- the data acquiring module is further configured to stop receiving data sent by the projection system after determining to enable the background projection mode.
- the device further includes: a function control module configured to determine whether the background projection function is turned on or off by: monitoring a broadcast message; wherein the broadcast message is used for broadcasting to enable or disable the background projection function; or Performing the background projection function on or off through the API interface; or polling the global variable value; wherein the global variable value is set to indicate that the background projection function is turned on or off.
- a function control module configured to determine whether the background projection function is turned on or off by: monitoring a broadcast message; wherein the broadcast message is used for broadcasting to enable or disable the background projection function; or Performing the background projection function on or off through the API interface; or polling the global variable value; wherein the global variable value is set to indicate that the background projection function is turned on or off.
- the device further includes: a prompt information display module, configured to: after determining to turn on or off the background projection function, projecting and displaying a specified image on the projection device; wherein the specified image is used to prompt the user to switch the projection content.
- a prompt information display module configured to: after determining to turn on or off the background projection function, projecting and displaying a specified image on the projection device; wherein the specified image is used to prompt the user to switch the projection content.
- Embodiments of the present invention also provide a computer program for implementing the method.
- Embodiments of the present invention also provide a computer readable storage medium storing the computer program.
- the method of the embodiment of the invention solves the problem that the projection product can only project the data on the current physical screen in the related art, and the user experience is not high, and the data after the screen sharing connection can be projected in the background, and the projection is released.
- the physical screen of the device allows the user to perform other operations while projecting, improving the user experience.
- FIG. 1 is a flow chart of a background projection method according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing the structure of a background projection apparatus according to an embodiment of the present invention.
- FIG. 3 is a block diagram showing the structure of a system according to an embodiment of the present invention.
- FIG. 4 is a flow chart of a system turning on a background projection function according to an embodiment of the present invention.
- FIG. 5 is a flow diagram of a system turning off background projection functionality in accordance with an embodiment of the present invention.
- the embodiment of the present invention provides a background projection method and apparatus, and the embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
- FIG. 1 is a flowchart of a background projection method according to an embodiment of the present invention. The method includes the following steps (step S102 - step S106):
- Step S102 establishing a data sharing connection between the projection device and the source device.
- Step S104 after determining to enable the background projection function, acquiring data from the source device.
- the data sent by the projection system is stopped.
- the data transmitted by the projection system is the data on the physical screen of the projection device.
- Step S106 the acquired data of the source device is projected and displayed on the projection device.
- the problem that the projection product can only project the current physical screen data and the user experience is not high can be solved, and the data after the screen sharing connection can be projected in the background, and the physical screen of the projection device is released, Allows the user to do other operations while projecting, improving the user experience.
- this embodiment provides The following alternative embodiments are provided to determine whether the background projection function is turned on or off by:
- a broadcast message is sent, and the system simultaneously listens to the broadcast message; when it is monitored, it indicates that the background projection function is enabled; the closed operation is similar; or the system provides an API interface for use by the application, and the application can pass the API.
- controlling the background projection function to be turned on or off is not limited to the above several methods, no matter which way, as long as the background projection function can be accurately controlled to be turned on or off.
- the embodiment provides an optional implementation manner, that is, after determining to enable or disable the background projection function, the method of the embodiment further includes: projecting and displaying a specified image on the projection device; wherein the designated image is used for Prompt the user is switching the projected content.
- the method introduced in this embodiment when the user shares the connection with the smart micro-projection product through the screen through the mobile phone or the pad terminal, only the mobile phone data shared by the screen can be projected out. At this time, the physical screen of the micro-projection product is idle, and the user You can do other operations, such as surfing the Internet, etc., without affecting the projection.
- FIG. 2 is a structural block diagram of a background projection apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes: a connection establishment module 10, a data acquisition module 20, and a background data projection module 30. The structure is described in detail below.
- connection establishing module 10 is configured to establish a data sharing connection between the projection device and the source device;
- the data obtaining module 20 is connected to the connection establishing module 10, and is configured to acquire data from the source device after determining to enable the background projection function;
- the background data projection module 30 is connected to the data acquisition module 20 and configured to display the acquired data of the source device on the projection device.
- the problem that the projection product can only project the data on the current physical screen and the user experience is not high can be solved, and the data after the screen sharing connection can be projected in the background, and the physical screen of the projection device is released, Allows the user to do other operations while projecting, improving the user experience.
- the device further includes: a system data receiving module, configured to receive data sent by the projection system after determining to turn off the background projection function; and a system data projection module, configured to receive the data of the projection system on the projection device Projection display.
- the data acquiring module 20 is further configured to stop receiving data sent by the projection system after determining to enable the background projection mode.
- the device further includes: a function control module, configured to determine whether the background projection function is turned on or off by: : listening to a broadcast message; wherein the above broadcast message is used for broadcasting to enable or disable the background projection function; or, performing an on or off through the API interface The background projection function; or, polling the global variable value; wherein, the above global variable value is set to indicate that the background projection function is turned on or off.
- a function control module configured to determine whether the background projection function is turned on or off by: : listening to a broadcast message; wherein the above broadcast message is used for broadcasting to enable or disable the background projection function; or, performing an on or off through the API interface The background projection function; or, polling the global variable value; wherein, the above global variable value is set to indicate that the background projection function is turned on or off.
- the device further includes: a prompt information display module, configured to determine whether the background projection function is turned on or off, in the above projection device The upper projection displays a specified image; wherein the specified image is used to prompt the user to switch the projected content.
- FIG. 3 is a block diagram of a system structure according to an embodiment of the present invention. As shown in FIG. 3, the system includes: a screen sharing source device, a smart pico projection device, and a projection module.
- the screen sharing Sink application is a software module on the smart micro projection device that completes the reception of screen sharing.
- the projection module is a module responsible for projection on the smart micro projection device.
- FIG. 4 is a flowchart of a system opening background projection function according to an embodiment of the present invention. As shown in FIG. 4, the flow includes the following steps (step S402-step S408):
- Step S402 the smart pico-projection device turns on the screen sharing receiving end, and the screen sharing source device establishes a connection with the screen;
- step S404 the user selects to enable the background projection function in the Sink application, and the Sink application first checks whether the projection module is turned on, and if it is not turned on, turns it on. When the projection module is turned on, the Sink application informs the system that it is currently in the background projection mode;
- Step S406 when the system knows that the background projection is turned on, stops sending data to the HDMI input of the projection module;
- Step S408 the Sink application starts to send data to the HDMI input of the projection module, and the projection module
- the projected image is the data sent by the Sink application.
- This data is the screen data of the Source side received through the screen sharing.
- the Sink application switches to the background, and the user can do other operations on the projection device at this time.
- FIG. 5 is a flowchart of a system closing background projection function according to an embodiment of the present invention. As shown in FIG. 5, the flow includes the following steps (step S502 - step S508):
- step S502 the current state is a state in which the background projection function is turned on.
- step S504 the user selects to turn off the background projection.
- step S506 the Sink application first suspends sending data to the HDMI input of the projection module, and notifies the system that the background projection ends.
- Step S508 when the system knows that the background projection ends, it starts to send data to the HDMI input of the projection module.
- the remote mobile phone screen can be projected without affecting the use of the projection device, and the user experience is very good.
- Step 1 The Sink application on the projection device is turned on, and the projection function is turned on;
- Step 2 The Source device links the Sink application on the projection device to start sharing data.
- Step 3 The Sink application plays the data sent by the Source device
- Step 4 The user selects to enable the background projection operation in the Sink application, and the operation mode may be through a software menu or a physical button;
- the Sink application can set the background projection function to be enabled by default. When the user presses the home button to switch to the standby interface in this case, or switches to other applications through other operation modes, the Sink application automatically switches to the background projection.
- the user can also turn off the default background projection function in the Sink application or system settings.
- Step 5 After the Sink application starts the background projection mode, it switches to the background and informs the system that the background projection function is enabled.
- the system listens to the broadcast message at the same time.
- it means that the background projection function is enabled, and the shutdown operation is similar; or,
- the system provides an API interface for use by the application, and the application can use this API call to start and stop the background projection function; or
- the system polls the value of the global variable.
- the value is set to true or 1 or enable, etc., the background projection function is enabled.
- Step 6 The system stops sending screen data to the projection module, and the system stops calling the HDMI input data sending interface of the projection module to achieve the purpose of stopping sending the screen data;
- a fixed image can be sent, for example, the user is prompted to "switch to the background. Projecting information that lets the user perceive that the projected content is now being switched.
- Step 7 The Sink application simultaneously receives the data shared by the Source for decoding, and sends the decoded video data to the HDMI input of the projection module;
- Step 8 the projection module projects the data input by the HDMI
- Step 9 the user enters the Sink application again through the menu, and turns off the background projection function
- Step 10 the Sink application stops sending data to the HDMI input of the projection module
- Step 11 The Sink application notifies the system that the background projection is off;
- Step 12 The system sends the screen data to the HDMI input of the projection module
- step 13 the projection module projects the data of the HDMI input.
- the computer program can be implemented in a computer readable storage medium, the computer program being executed on a corresponding hardware platform (such as a system, device, device, device, etc.), when executed, including One or a combination of the steps of the method embodiments.
- all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
- the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
- each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
- the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
- the embodiment of the invention provides a method and a device for back-projecting data shared by a screen on a smart micro-projection product, which solves the problem that the projection product can only project data on the current physical screen in the related art, and the user experience is not high.
- the problem is that the data sharing the screen sharing connection can be projected in the background, and the physical screen of the projection device is released, which allows the user to perform other operations while projecting, thereby improving the user experience.
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Abstract
一种后台投影方法及装置，该方法包括：建立投影设备与源设备的数据共享连接；确定开启后台投影功能后，获取来自所述源设备的数据；将获取到的所述源设备的数据，在所述投影设备上投影显示。
Description
本发明涉及通讯领域，特别是涉及一种后台投影方法及装置。
智能微型投影产品(例如智能微型投影机)，是指新增了无线wifi上网功能并搭载了智能操作系统的投影机，Android系统是目前运用到这一系列产品中较为广泛的智能操作系统。支持多屏互动，可以与安卓手机，安卓PAD，iPhone，iPad等互联共享；支持一键热点AP及WIFI DIRECT；多USB接口，支持USB键盘鼠标等；具有体积小、易操作、多功能、多支持、便携带等特点。目前，智能投影的技术也在不断的进步，功能也将不断的完善。
屏幕共享技术出现在图形化的用户界面(GUI)之后。屏幕共享的目的是在远端客户机上重现主机屏幕的界面显示内容。或者它是以一种虚拟终端的概念出现，使得远端的用户感觉像坐在主机旁边一样。目前常用的屏幕共享技术有Wifi Display以及苹果系列的Air Play等等。
目前智能微型投影产品打开投影时，大部分是将当前物理屏幕上的数据投影实时出去，而当通过屏幕共享将手机与微型投影产品连接后，用户更多的是想将共享过来的手机屏幕投影出去，投影产品上的物理屏幕同时能做其它事情。
针对相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，目前尚未提出有效的解决方案。
发明内容
针对相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，本发明实施例提供了一种后台投影方法及装置，用以解决上述技
术问题。
本发明实施例提供了一种后台投影方法，该方法包括：建立投影设备与源设备的数据共享连接；确定开启后台投影功能后，获取来自所述源设备的数据；将获取到的所述源设备的数据，在所述投影设备上投影显示。
可选地，所述方法还包括：在确定关闭后台投影功能后，接收所述投影系统发送的数据；将接收到的所述投影系统的数据，在所述投影设备上投影显示。
可选地，确定开启后台投影模式后，所述方法还包括：停止接收投影系统发送的数据。
可选地，通过以下方式确定后台投影功能的开启或关闭：监听广播消息；其中，所述广播消息用于广播开启或关闭后台投影功能；或者，通过API接口执行开启或关闭后台投影功能；或者，轮询全局变量值；其中，设置所述全局变量值，用于表示开启或关闭后台投影功能。
可选地，在确定开启或关闭后台投影功能后，所述方法还包括：在所述投影设备上投影显示指定图像；其中，所述指定图像用于提示用户正在切换投影内容。
本发明实施例还提供了一种后台投影装置，其中，该装置包括：连接建立模块，设置为建立投影设备与源设备的数据共享连接；数据获取模块，设置为在确定开启后台投影功能后，获取来自所述源设备的数据；后台数据投影模块，设置为将获取到的所述源设备的数据，在所述投影设备上投影显示。
可选地，所述装置还包括：系统数据接收模块，设置为在确定关闭后台投影功能后，接收所述投影系统发送的数据；系统数据投影模块，用于将接收到的所述投影系统的数据，在所述投影设备上投影显示。
可选地，所述数据获取模块，还设置为在确定开启后台投影模式后，停止接收投影系统发送的数据。
可选地，所述装置还包括：功能控制模块，设置为通过以下方式确定后台投影功能的开启或关闭：监听广播消息；其中，所述广播消息用于广播开启或关闭后台投影功能；或者，通过API接口执行开启或关闭后台投影功能；或者，轮询全局变量值；其中，设置所述全局变量值，用于表示开启或关闭后台投影功能。
可选地，所述装置还包括：提示信息显示模块，设置为确定开启或关闭后台投影功能后，在所述投影设备上投影显示指定图像；其中，所述指定图像用于提示用户正在切换投影内容。
本发明实施例还提供一种实现所述方法的计算机程序。
本发明实施例还提供一种存储所述计算机程序的计算机可读存储介质。
采用本发明实施例所述的方法，解决了相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，可以实现将屏幕共享连接后的数据在后台投影，释放了投影设备的物理屏幕，可以让用户在投影的同时做其它操作，提高了用户体验。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图概述
图1是根据本发明实施例的后台投影方法流程图；
图2是根据本发明实施例的后台投影装置的结构框图；
图3是根据本发明实施例的系统结构框图；
图4是根据本发明实施例的系统开启后台投影功能的流程图；
图5是根据本发明实施例的系统关闭后台投影功能的流程图。
本发明的较佳实施方式
为了解决相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，本发明实施例提供了一种后台投影方法及装置，以下结合附图对本发明实施例进行详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不限定本发明。
实施例一
本实施例提供了一种后台投影方法，该方法可以在投影设备侧(例如：智能微型投影产品)实现，图1是根据本发明实施例的后台投影方法流程图，如图1所示，该方法包括以下步骤(步骤S102-步骤S106)：
步骤S102，建立投影设备与源设备的数据共享连接。
步骤S104，确定开启后台投影功能后，获取来自上述源设备的数据。为了保证源设备的数据的准确接收，避免资源浪费，可选地，在确定开启后台投影模式后，停止接收投影系统发送的数据。该投影系统发送的数据，即为投影设备的物理屏幕上的数据。
步骤S106，将获取到的源设备的数据，在上述投影设备上投影显示。
通过上述方法，解决了相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，可以实现将屏幕共享连接后的数据在后台投影，释放了投影设备的物理屏幕，可以让用户在投影的同时做其它操作，提高了用户体验。
在确定关闭后台投影功能后，停止接收来自源设备的数据，开始接收投影系统发送的数据，将接收到的投影系统的数据，在投影设备上投影显示。即投影当前物理屏幕上的数据，从而实现两种投影方式的准确切换。用户可以选择将屏幕共享连接后的数据在后台投影，也可以选择投影上述投影设备的物理屏幕上的内容。
为了确保后台投影功能的开启或关闭的准确性和易操作性，本实施例提
供了以下可选实施方式，即通过以下方式确定后台投影功能的开启或关闭：
(1)监听广播消息；其中，上述广播消息用于广播开启或关闭后台投影功能；或者，(2)通过API接口执行开启或关闭后台投影功能；或者，(3)轮询全局变量值；其中，设置上述全局变量值，用于表示开启或关闭后台投影功能。
具体地，发送一个广播消息，系统同时监听这个广播消息；当监听到后，即表示开启了后台投影功能；关闭的操作类似；或者，系统提供一个API接口，供应用使用，应用可以通过这个API调用来进行开启和停止后台投影功能；设置一个系统全局变量，系统轮询的查询这个全局变量的值；或者，当该值被设置成true或者1或者enable等表示启动的值时，即开启后台投影功能。
当然，控制后台投影功能的开启或关闭，并不仅限于上述几种方式，无论采用何种方式，只要能够准确控制后台投影功能的开启或关闭即可。
为了更好的用户体验，避免在数据切换的过程中造成投影内容的突兀转换，在停止发送真实的屏幕数据后，可以发送一帧固定的图像，比如上面有提示用户“正在切换到后台投影”的信息，让用户感知现在正在切换投影内容。基于此，本实施例提供了一种可选实施方式，即在确定开启或关闭后台投影功能后，本实施例的方法还包括：在投影设备上投影显示指定图像；其中，该指定图像用于提示用户正在切换投影内容。
根据本实施例介绍的方法，当用户通过手机或者pad终端跟智能微型投影产品通过屏幕共享连接后，可以只将屏幕共享的手机数据投影出去，此时微型投影产品的物理屏幕是空闲的，用户可以通过做其它操作，比如上网等等，不影响投影。
实施例二
对应于上述实施例介绍的后台投影方法，本实施例提供了一种后台投影装置，该装置可以设置在投影设备侧，用以实现上述实施例。图2是根据本发明实施例的后台投影装置的结构框图，如图2所示，该装置包括：连接建立模块10、数据获取模块20和后台数据投影模块30。下面对该结构进行详细介绍。
连接建立模块10，设置为建立投影设备与源设备的数据共享连接；
数据获取模块20，连接至连接建立模块10，设置为在确定开启后台投影功能后，获取来自上述源设备的数据；
后台数据投影模块30，连接至数据获取模块20，设置为将获取到的上述源设备的数据，在上述投影设备上投影显示。
通过上述装置，解决了相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，可以实现将屏幕共享连接后的数据在后台投影，释放了投影设备的物理屏幕，可以让用户在投影的同时做其它操作，提高了用户体验。
上述装置还包括：系统数据接收模块，设置为在确定关闭后台投影功能后，接收上述投影系统发送的数据；系统数据投影模块，用于将接收到的上述投影系统的数据，在上述投影设备上投影显示。
实现两种投影方式的准确切换，使得用户可以选择将屏幕共享连接后的数据在后台投影，也可以选择投影上述投影设备的物理屏幕上的内容。可选地，上述数据获取模块20，还设置为在确定开启后台投影模式后，停止接收投影系统发送的数据。
为了确保后台投影功能的开启或关闭的准确性和易操作性，本实施例提供了以下优选实施方式，即上述装置还包括：功能控制模块，设置为通过以下方式确定后台投影功能的开启或关闭：监听广播消息；其中，上述广播消息用于广播开启或关闭后台投影功能；或者，通过API接口执行开启或关闭
后台投影功能；或者，轮询全局变量值；其中，设置上述全局变量值，用于表示开启或关闭后台投影功能。
为了更好的用户体验，避免在数据切换的过程中造成投影内容的突兀转换，可选地，上述装置还包括：提示信息显示模块，设置为确定开启或关闭后台投影功能后，在上述投影设备上投影显示指定图像；其中，上述指定图像用于提示用户正在切换投影内容。
实施例三
图3是根据本发明实施例的系统结构框图，如图3所示，该系统包括：屏幕共享Source设备、智能微型投影设备和投影模块。
其中，屏幕共享Source设备，大多为手机终端。屏幕共享Sink应用是智能微型投影设备上的一个软件模块，完成屏幕共享的接收工作。投影模块，是智能微型投影设备上负责投影的模块。
实施例四
下面对上述实施例的系统操作流程进行介绍。图4是根据本发明实施例的系统开启后台投影功能的流程图，如图4所示，该流程包括以下步骤(步骤S402-步骤S408)：
步骤S402，智能微型投影设备开启屏幕共享接收端，并且屏幕共享Source设备与之建立了连接；
步骤S404，用户在Sink应用中选择开启后台投影功能，Sink应用首先检查投影模块是否开启，如果没开启的话则开启它。当投影模块开启后，Sink应用告知系统目前处于后台投影模式；
步骤S406，当系统得知后台投影开启后，停止向投影模块的HDMI输入发送数据；
步骤S408，Sink应用向投影模块的HDMI输入开始发送数据，投影模块
投射出来的画面即为Sink应用发送的数据，这个数据也就是通过屏幕共享接收到的Source端的屏幕数据。
Sink应用切换到后台，用户此时可以在投影设备上做其它操作。
图5是根据本发明实施例的系统关闭后台投影功能的流程图，如图5所示，该流程包括以下步骤(步骤S502-步骤S508)：
步骤S502，当前状态是后台投影功能开启的状态。
步骤S504，用户选择关闭后台投影。
步骤S506，Sink应用先暂停向投影模块的HDMI输入发送数据，并通知系统后台投影结束。
步骤S508，当系统得知后台投影结束时，开始向投影模块的HDMI输入发送数据。
通过本实施，当通过屏幕共享连接上投影设备后，可以在不影响投影设备使用的情况下将远端手机屏幕投射出去，用户体验非常好。
通过上述几个实施例的介绍可知，本发明实施例采用的技术方案，具体步骤如下：
步骤一，投影设备上的Sink应用开启，并开启投影功能；
步骤二，Source设备链接上投影设备上的Sink应用，开始共享数据；
步骤三，Sink应用将Source设备发送过来的数据播放出来；
步骤四，用户在Sink应用中选择开启后台投影操作，操作方式可以是通过软件菜单，也可以是物理按键；
Sink应用可以设置后台投影功能缺省开启，当用户在这种情况下按home键直接切换到待机界面，或者通过其它操作方式切换到其它应用时，Sink应用自动切换到后台投影。
用户也可以在Sink应用或者系统设置中关闭缺省打开后台投影功能。
步骤五，Sink应用开始后台投影模式后，切换到后台，并告知系统开启了后台投影功能；
告知系统开启投影功能有如下几个方式：
发送一个广播消息，系统同时监听这个广播消息，当监听到后，即表示开启了后台投影功能，关闭的操作类似；或者，
系统提供一个API接口，供应用使用，应用可以通过这个API调用来进行开启和停止后台投影功能；或者，
设置一个系统全局变量，系统轮询的查询这个全局变量的值，当该值被设置成true或者1或者enable等表示启动的值时，即开启后台投影功能。
步骤六，系统停止发送屏幕数据到投影模块，系统停止调用投影模块的HDMI输入数据发送接口，以达到停止发送屏幕数据的目的；
另外，为了更好的用户体验，避免在数据切换的过程中造成投影内容的突兀转换，在停止发送真实的屏幕数据后，可以发送一帧固定的图像，比如上面有提示用户“正在切换到后台投影”的信息，让用户感知现在正在切换投影内容。
步骤七，Sink应用同时接收Source共享的数据进行解码，并将解码出来的视频数据，发送到投影模块的HDMI输入；
步骤八，投影模块将HDMI输入的数据投影出来；
步骤九，用户通过菜单再次进入Sink应用，并关闭后台投影功能；
步骤十，Sink应用停止向投影模块的HDMI输入发送数据；
步骤十一，Sink应用通知系统后台投影关闭；
步骤十二，系统将屏幕数据发送到投影模块的HDMI输入；
步骤十三，投影模块将HDMI输入的数据投影出去。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计
算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
上述实施例中的各装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
本发明实施例提供了一种在智能微型投影产品上，将屏幕共享过来的数据后台投影的方法及装置，解决了相关技术中投影产品只能投影当前物理屏幕上的数据，用户体验不高的问题，可以实现将屏幕共享连接后的数据在后台投影，释放了投影设备的物理屏幕，可以让用户在投影的同时做其它操作，提高了用户体验。
Claims (12)
- 一种后台投影方法，包括：建立投影设备与源设备的数据共享连接；确定开启后台投影功能后，获取来自所述源设备的数据；将获取到的所述源设备的数据，在所述投影设备上投影显示。
- 如权利要求1所述的方法，所述方法还包括：在确定关闭后台投影功能后，接收投影系统发送的数据；将接收到的所述投影系统的数据，在所述投影设备上投影显示。
- 如权利要求1所述的方法，其中，确定开启后台投影模式后，所述方法还包括：停止接收投影系统发送的数据。
- 如权利要求2所述的方法，其中，通过以下方式确定后台投影功能的开启或关闭：监听广播消息；其中，所述广播消息用于广播开启或关闭后台投影功能；或者，通过应用程序编程API接口执行开启或关闭后台投影功能；或者，轮询全局变量值；其中，设置所述全局变量值，用于表示开启或关闭后台投影功能。
- 如权利要求2所述的方法，其中，在确定开启或关闭后台投影功能后，所述方法还包括：在所述投影设备上投影显示指定图像；其中，所述指定图像用于提示用户正在切换投影内容。
- 一种后台投影装置，包括：连接建立模块，其设置为建立投影设备与源设备的数据共享连接；数据获取模块，其设置为在确定开启后台投影功能后，获取来自所述源 设备的数据；后台数据投影模块，其设置为将获取到的所述源设备的数据，在所述投影设备上投影显示。
- 如权利要求6所述的装置，所述装置还包括：系统数据接收模块，其设置为在确定关闭后台投影功能后，接收投影系统发送的数据；系统数据投影模块，其设置为将接收到的所述投影系统的数据，在所述投影设备上投影显示。
- 如权利要求6所述的装置，其中，所述数据获取模块，还设置为在确定开启后台投影模式后，停止接收投影系统发送的数据。
- 如权利要求7所述的装置，所述装置还包括：功能控制模块，其设置为通过以下方式确定后台投影功能的开启或关闭：监听广播消息；其中，所述广播消息用于广播开启或关闭后台投影功能；或者，通过应用程序编程API接口执行开启或关闭后台投影功能；或者，轮询全局变量值；其中，设置所述全局变量值，用于表示开启或关闭后台投影功能。
- 如权利要求7所述的装置，所述装置还包括：提示信息显示模块，其设置为确定开启或关闭后台投影功能后，在所述投影设备上投影显示指定图像；其中，所述指定图像用于提示用户正在切换投影内容。
- 一种实现权利要求1-5任一项所述方法的计算机程序。
- 一种存储权利要求11所述计算机程序的计算机可读存储介质。
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