Data preprocessing ranking circuit and method of touch screen controller

Abstract

The invention provides a data preprocessing sequencing circuit of a touch screen controller, which relates to the field of data preprocessing sequencing circuits. The data preprocessing sequencing circuit comprises a clock generating module, a register module and a data comparison module group, wherein the clock generating module generates required clock signals, the register module can be used to temporally store input data and input data needing sequencing to the data comparison module group, and the data comparison module group performs sequencing processing to the received data and outputs the data which are sequenced. The invention overcomes shortages that a common sequencing circuit is relatively large in occupation area, and can complete data comparison sequencing operation just byusing a D trigger, a one-out-of-two data selector, a data comparator and a coincidence gate, thereby largely reducing the area of controllers, and saving cost.

Description

technical field [0001] The present invention relates to a data preprocessing and sorting circuit, and more specifically, to a touch screen controller data preprocessing and sorting circuit and method. Background technique [0002] Touch screens have been more and more often used in various electronic products, providing convenience for people's life, work and study. Among them, the touch screen controller is an integral part of the touch screen, and its excellent performance directly affects the overall performance of the touch screen. [0003] At present, in the touch screen controller, some of the data converted from the ADC analog-to-digital converter are not preprocessed, but are directly sent to the external control chip for processing, which may easily cause the chip to detect false touches and cause misoperations; in order to prevent Misoperation, some data preprocessing, first sort the data after multiple conversions, and then take the average or median value and th...

AI Technical Summary

Problems solved by technology

For example, the Chinese invention patent application with the application number of 200510135024.9 discloses "a hardware circuit and method for realizing data sorting". The area of ​​the device chip will be greatly increased, thereby increasing the cost

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