Touch Event Data Checksums for Reliable Controller Transmission
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Solution Overview
Problem
Conventional touch data transmission methods in electronic devices often result in data loss during transmission, leading to incorrect touch event information being processed by controllers, which can cause inefficiencies and errors in device performance.
Innovation Solution
A touch data transmission method that involves generating header information and checksums by a first controller for detected touch events, storing these in memory, and using a second controller to verify the checksums to ensure accurate data transmission by discarding incorrect information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If touch event information is transmitted directly without verification, then transmission speed is improved, but data accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by generating checksum information and header information before transmitting touch event data. The first controller calculates checksums for each touch event packet and stores them in advance in the memory, allowing the second controller to verify data integrity quickly without slowing down the transmission process.
Solution Approach 2:
The patent introduces checksum information as an intermediary element that mediates between the touch detection device and the controller. This checksum acts as a verification mechanism that enables the second controller to identify and discard corrupted touch event packets while maintaining efficient data transmission.
2Reliability
If checksum verification is performed on all touch event data, then data accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies partial action by performing checksum verification selectively rather than on all touch event data. The second controller calculates checksums and compares them with stored values to identify only the corrupted packets that need to be discarded, avoiding unnecessary processing of valid data and thus reducing overall processing time.
3Reliability
If error detection mechanisms are added, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the touch detection device to generate and store its own checksum information autonomously. The first controller automatically calculates checksums for each touch event packet and stores them in the memory without requiring external intervention, simplifying the overall system architecture while maintaining high reliability.
Data Source
AI summary
A touch data transmission method of present disclosure includes: generating a header information by a first controller according to a detected touch event; generating a first checksum information by the first controller according to the header information; storing the header information and the first checksum information to a memory by the first controller; and, storing a plurality of position information of the detected touch event to the memory by the first controller.