Quick response method for LCD in standby and mobile terminal

Abstract

The invention discloses a quick response method for an LCD in standby and a mobile terminal, wherein the mobile terminal comprises a central processing unit, a voltage comparator, a backlight, an LCD and a power button, the central processing unit is electrically connected with the power button, the voltage comparator, the backlight and the LCD; the voltage comparator is used for receiving a preset startup threshold voltage and a voltage value input by the power button, the central processing unit is aroused when the voltage comparator detects that the level of one end, which is connected with the central processing unit, of the power button is lower than the startup threshold voltage, a flag of LCD initialization completion is set, the LCD is started to perform initialization, whether the LCD initialization is completed is inquired when the mobile terminal is judged to be pressed, the backlight is controlled to be turned on after the LCD initialization is confirmed to be completed, or else the LCD is closed, the voltage comparator is powered, and the mobile terminal enters into a standby mode. The LCD can be quickly lightened by the mobile terminal when the power button is judged to be pressed, thus a user can feel the response sensitivity of the LCD.

Description

technical field [0001] The invention relates to a mobile terminal LCD display technology, in particular to a method for fast response of an LCD during standby and a mobile terminal. Background technique [0002] At present, mobile terminals often turn off the LCD when the system is in standby, and only wake it up from the standby state and turn on the display when it needs to be used. It generally takes about half a second for the mobile terminal to wake up from standby to display on the LCD, and the response time is relatively slow. For example, it takes a long time for a mobile terminal to detect a complete pressing process by detecting that a key is pressed. Taking the key press detection with low level as an example, figure 1 It shows a schematic diagram of the voltage sequence from when the power button is pressed to the LCD lighting in the prior art when the mobile terminal is on standby. It is considered that the power button is pressed for a certain period of time, ...

AI Technical Summary

Problems solved by technology

It can be seen that the mobile terminal does not perform other events within a certain stable low-level time range of the power button, and the initialization of the LCD starts after confirming that the power button is pressed, which leads to a long time for the LCD to display and a slow response time , giving the user a feeling of slow mobile terminal response, which affects the user experience

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