Display Sensor End Position Detection Circuit
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Solution Overview
Problem
Existing electronic apparatuses face challenges in reliably detecting the end of a display region due to the discrete nature of position detection by sensors, which can lead to missed detections during sliding movement operations, especially when the detection timing does not coincide with the sensor's discrete detection intervals.
Innovation Solution
The electronic apparatus includes a decision circuit that determines if a pointer has passed the end of the display region by comparing positions detected at discrete intervals, a display region end position calculation circuit that calculates the end position based on detected sensor positions, and a display controlling circuit that adjusts the display screen accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If position detection is performed discretely at predetermined time intervals, then the processing load on the control circuit is reduced and power consumption is lowered, but the reliability of detecting the end position during sliding movement operations deteriorates
Solution Approach 1:
The system performs preliminary detection of the pointer's movement trajectory by detecting positions at multiple discrete time intervals before the actual end position detection is needed. This preliminary action builds a trajectory profile that enables reliable end position detection even when the pointer passes through the end position between discrete detection intervals, thus resolving the contradiction between discrete detection and detection reliability.
Solution Approach 2:
A trajectory calculation unit acts as an intermediary between the discrete position detection and the end position determination. This intermediary component calculates the pointer's movement trajectory by interpolating between discrete detection points, enabling accurate end position detection without requiring continuous detection, thus maintaining low power consumption while improving detection reliability.
2Adaptability or versatility
If the control circuit carries out multiple tasks and processes simultaneously, then the functionality and versatility of the electronic apparatus is improved, but the processing speed of each individual task deteriorates
Solution Approach 1:
The control circuit is segmented into specialized functional units: a position detection process unit dedicated to handling sensor data, and a display control unit dedicated to rendering operations. This segmentation allows each unit to process its specific tasks efficiently without being burdened by other functions, thus maintaining high processing speed while supporting multiple simultaneous tasks and processes.
Data Source
AI summary
Apparatus and method are provided that are capable of controlling a display in response to reliable detection of a sliding movement operation of a pointer (e.g., a user's finger) that passes through an end of a display region. The apparatus and method utilize a position detection sensor, which is superposed on the display and configured to detect the pointer's position discretely and successively at a predetermined time interval. Based on a first position detected by the position detection sensor and a second position detected, at the predetermined time interval since the detection of the first position, by the position detection sensor, which together indicate a moving operation of the pointer, it is determined whether the moving operation of the pointer has crossed an end of the display region. If it is so determined, a passed end position of the display region is calculated based on the first and second positions.