Method and device for resetting drive circuit of touch input device

Abstract

The invention discloses a method and a device for resetting a drive circuit of a touch input device. The method comprises the following steps: setting a time identification value and a time threshold value the initial values of which are set values; using the time identification value to time the time length not detecting an input signal; and when the time length not detecting the input signal reaches the time threshold value, resetting the drive circuit, and resetting the time identification value to the initial value and returning to execute the timing step. The invention also discloses a device for resetting the drive circuit of the touch input device. The invention has better versatility and faster response on failure fault, can improve user experience of users, occupies less system resources and has higher system execution efficiency.

Description

technical field [0001] The invention relates to circuit detection technology, in particular to a method and device for resetting a drive circuit of a touch input device. Background technique [0002] At present, the peripheral technology of multimedia digital equipment is developing rapidly. Touch screen, as an intuitive and convenient way of human-computer interaction, is being more and more widely used in various digital equipment. The use of a touch screen requires a dedicated driver chip built into the digital device for support, and the touch screen has strict requirements on the use environment. [0003] When the power supply of the touch screen fluctuates, or is disturbed by static electricity in the use environment, or the key signal lines of the driver chip in the circuit are subject to strong external interference, the driver chip of the touch screen may fail due to logic anomalies and cannot work normally. , Correspondingly, at this time, the touch screen will be...

AI Technical Summary

Problems solved by technology

[0013] But obviously, this method still has its corresponding limitations

First of all, in step 101, it is possible to judge whether the driver chip is invalid, and the driver chip needs to be able to provide the function of self-test and report whether its own working state is normal, and this function is not available for all driver chips; in addition, the above method In each time period described in the above, the driver chip needs to perform self-test, and the self-test will inevitably call the corresponding detection program, so that in each time period, the system needs to call and execute the As we all know, digital equipment is a kind of embedded equipment, and its system resources are very scarce, and figure 1 The method shown will undoubtedly lead to an increase in system resource occupation and a decrease in system execution efficiency, so this method of sacrificing system resources and execution efficiency in exchange for improved stability is not advisable

Images