A combination key capture device and method for a mobile terminal
A technology of mobile terminals and combined keys, which is applied in the direction of program control devices, data processing input/output processes, instruments, etc., can solve the problem that the camera startup time affects the capture speed, etc., and achieve the effect of shortening the response time and speeding up the capture speed
Active Publication Date: 2019-08-20
HUIZHOU TCL MOBILE COMM CO LTD
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Problems solved by technology
[0005] In view of the deficiencies of the prior art above, the purpose of the present invention is to provide a mobile terminal combination key capture device and its method, to solve the problem that the camera start-up time affects the capture speed when the existing mobile terminal captures the picture
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[0030] The invention provides a combined key capture device and method for a mobile terminal. By setting a reference voltage Vth, when it is detected that the level of any key in the combination key is lower than the reference voltage Vth, the camera will be started in the background immediately; if it is detected that the combination keys are all pressed, the camera will be switched to the foreground to run In this way, the response speed of the camera starting to capture can be greatly improved, and it is simple and easy to implement, and the camera is started faster than the prior art. In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] P...
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The invention discloses a combination key snapshotting device and method of a mobile terminal. The combination key snapshotting device is connected between combination keys and a camera and comprises a detection module, a voltage comparator and a central processing unit; the detection module detects the pressing state of the combination keys in real time and outputs a corresponding detection voltage to the voltage comparator; the voltage comparator awakes the central processing unit when the voltage comparator judges that the detection voltage is smaller than a preset reference voltage; the central processing unit disables the voltage comparator and starts the camera, whether the combination keys are both pressed or not is judged, and the operating state of the camera is controlled according to the judging result; due to the fact that the camera is started firstly, the camera can be operated when the combination keys are both pressed, the response time of the camera is shortened, the snapshotting speed is increased, and the problem that the starting time of the camera in an existing mobile terminal influences the snapshotting speed is solved.
Description
technical field [0001] The invention relates to the technical field of mobile terminals, in particular to a combination key capture device and method for a mobile terminal. Background technique [0002] At present, the camera function has generally existed in mobile terminals, and taking pictures is also one of the most commonly used functions in daily life. Some scenes are often fleeting when taking pictures, so there is an urgent need for a capture function. Some existing mobile phones have set up the capture function, such as the currently popular hammer mobile phone (smartisan t1). When the mobile phone is in the lock screen (black screen) state, if two buttons are detected to be pressed at the same time, the camera can be quickly started and the capture can be performed. . [0003] Take the active-low press detection as an example, such as figure 1 As shown, in the prior art, when the lock screen capture is performed, firstly, there will be vibration when the key is ...
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IPC IPC(8): G06F9/4401G06F3/0487
Inventor 俞斌杨维琴
Owner HUIZHOU TCL MOBILE COMM CO LTD