Touch Screen Control System Latency Reduction via Segmented Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with integrated touch screens and display functions suffer from increased latency and power consumption due to the processing burden on host processors, leading to user frustration and inefficiency in responding to user input.
Innovation Solution
A touch screen control system (TSCS) that operates autonomously, using control circuitry to detect user input and update the display without real-time intervention from the host processor, employing hardwired rules or previously provided rules to reduce latency and processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the host processor handles processing for both display and capacitive sensor device, then integrated functions are enabled, but latency increases and responsiveness decreases
Solution Approach 1:
The patent divides the processing system into two independent parts: a host processor for high-level application processing and a dedicated touch screen control system for real-time touch input and display output processing. This segmentation allows each component to specialize, reducing overall latency while maintaining integrated functionality.
Solution Approach 2:
The touch screen control system acts as an intermediary between the capacitive sensor device and the display, handling real-time processing locally without requiring constant host processor intervention. This mediator approach enables autonomous operation for time-critical functions.
2Ease of operation
If the host processor handles all processing tasks, then centralized control is maintained, but power consumption increases
Solution Approach 1:
The patent extracts real-time processing functions from the host processor and relocates them to the dedicated touch screen control system. This extraction reduces the computational burden on the host processor, lowering power consumption while maintaining centralized control through coordinated communication between components.
3Ease of operation
If the host processor updates the display, then centralized image management is maintained, but update rate is limited by processing speed
Solution Approach 1:
The patent segments display processing into two streams: high-level image management from the host processor and low-level real-time pixel updating from the dedicated touch screen control system. This allows display updates to occur at higher rates independent of host processor speed.
Solution Approach 2:
The touch screen control system performs self-service by autonomously handling display updates based on rules stored in its own memory, without requiring real-time instructions from the host processor. This enables faster local updates while maintaining centralized image management policies.
Data Source
AI summary
A touch screen control system communicates with a host processing system (HPS). The touch screen control system includes a memory and control circuitry. The control circuitry operates a touch screen according to rules stored in the memory by: during a first time period and in response to detecting a first type of user input with a touch sensor of the touch screen, updating a display screen of the touch screen autonomously without requiring intervention from the HPS following the detection of the first type of user input; during the first time period and in response to detecting a second type of user input with the touch sensor, updating the display screen according to directions provided by the HPS; and during a second time period and in response to detecting the first type of user input with the touch sensor, updating the display screen according to directions provided by the HPS.