Touch Data Packet Circuitry for Standardized Automotive Event Handling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The lack of a unified packet format specification between IC suppliers and carplay suppliers in automotive systems leads to inefficiencies in touch event detection, requiring extra time for discussion and definition.
Innovation Solution
A touch detection circuitry comprising an ADC, controller, and packet generator that converts analog touch signals to digital, calculates coordinate points and touch sizes, and encapsulates these into touch data packets, including reserved, debug, and checksum information, for efficient communication with electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a unified packet format specification is implemented, then communication efficiency and touch event processing speed are improved, but device complexity and implementation cost increase
Solution Approach 1:
The touch data packet is segmented into distinct fields with specific functions: coordinate data field for touch position, touch size field for contact area, event type field for touch gesture classification, and reserved field for future extensions. This segmentation allows each component to be processed independently, improving processing speed while maintaining clear structure that reduces implementation complexity.
Solution Approach 2:
The packet format is designed with universal applicability across different touch panel types and automotive systems. The standardized structure with clearly defined fields can handle various touch events (single touch, multi-touch, gestures) through the event type field, making it adaptable to different scenarios without requiring format changes, thus improving productivity without proportionally increasing complexity.
2Measurement precision
If detailed touch information (coordinate points and touch sizes) is transmitted, then touch event detection precision is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential touch information elements needed for accurate touch event detection: coordinate points (x, y) and touch size. By taking out only these critical parameters and excluding redundant data, the system achieves high measurement precision while minimizing communication overhead. The extracted data is packaged efficiently in the standardized packet format.
Solution Approach 2:
The packet format uses optimized parameter representations: coordinate points are encoded in a compact format, touch size is represented as a single scalar value, and event types are encoded as discrete values. These parameter changes reduce the overall data volume while preserving the precision needed for accurate touch event detection and processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates standardized and efficient touch event detection and handling, reducing communication overhead and enabling precise touch event processing in automotive systems.
Implementation Method 1
an ADC, which is arranged to convert touch signals of the touch panel from analog form into digital form
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A touch detection circuitry includes an analog-to-digital converter (ADC), a controller, and a packet generator. The ADC is arranged to convert touch signals of a touch panel from analog form into digital form. The controller is electrically connected to the ADC, and is configured to calculate at least one coordinate point and at least one touch size respectively corresponding to at least one touch event on the touch panel based on the touch signals. The packet generator is electrically connected to the controller, and is configured to encapsulate the at least one coordinate point and the at least one touch size into a touch data packet.