Touch Screen Controller 3D Rendering for Proximity Latency
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Solution Overview
Problem
In electronic systems with both a display and a proximity sensor device, the host processing system often experiences increased latency due to processing burdens, leading to performance shortcomings such as delays in providing visual feedback to users after input via the proximity sensor device.
Innovation Solution
A touch screen controller is introduced, comprising proximity sensor control circuitry, a rendering module, and display refresh circuitry, which operates the proximity sensor to sense input objects and renders three-dimensional object representations, thereby reducing the processing load on the host system by autonomously updating the display with pre-rendered 3D object overlays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the host processing system handles all processing including proximity input sensing, then the system has a simple architecture, but the host processing system experiences increased latency and processing burdens
Solution Approach 1:
The system divides processing functions into two segments: the host processing system handles high-level application logic while the touch screen controller handles proximity sensing and 3D object rendering. This segmentation reduces the host's processing burden and latency without requiring a complete architectural overhaul.
Solution Approach 2:
The touch screen controller acts as an intermediary between the proximity sensor and the host processing system. It pre-processes proximity input data and generates 3D object representations locally, then transmits only the rendered overlay data to the host, reducing communication overhead and host processing latency.
2Productivity
If the host processing system processes all visual feedback, then the rendering is centralized, but the response time to user input is delayed
Solution Approach 1:
The touch screen controller performs preliminary rendering of 3D object representations based on proximity sensor input before the host processing system completes its processing cycle. This preliminary action creates visual feedback that can be displayed immediately, reducing perceived response delay.
Solution Approach 2:
The touch screen controller autonomously handles the rendering pipeline for 3D object representations, including receiving proximity data, generating 3D models, and preparing display overlays without requiring continuous host intervention. This self-service capability accelerates visual feedback generation.
3Loss of energy
If the touch screen controller renders 3D object representations independently, then the processing load on the host system is reduced, but the device complexity increases
Solution Approach 1:
The touch screen controller is designed to perform multiple functions: proximity sensing, 3D object rendering, overlay generation, and display updating. By consolidating these functions in a single component, the system reduces overall device complexity while enabling independent processing to lower host power consumption.
Data Source
AI summary
A touch screen controller is configured for use in an electronic system. The electronic system comprises: the touch screen controller, a host processing system physically distinct from the touch screen controller, a display screen, and a proximity sensor element. The touch screen controller comprises proximity sensor control circuitry, a rendering module, and display refresh circuitry. The proximity sensor control circuitry is configured to operate the proximity sensor element to sense input objects in a sensing region of the electronic system. The rendering module is configured to render three-dimensional object representations for display on the display screen. The display refresh circuitry is configured to update the display screen with an image received from and processed by the host processing system and with the three-dimensional object representation rendered by the rendering module.