Long Press Detection Circuit for Wireless Earphones
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Solution Overview
Problem
Existing electronic devices struggle to detect a continuous long press state accurately, relying on software polling which increases power consumption and complexity, and may miss short finger separations.
Innovation Solution
An electronic device with an operation unit, detection unit, and control unit that initializes an internal state and notifies the control unit of an interrupt when a continuous long press state is detected, allowing for processing based on the interrupt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software polling is used to detect continuous long press state, then detection capability is improved, but power consumption and system complexity increase
Solution Approach 1:
The patent replaces software-based polling mechanisms with a hardware-level detection circuit that automatically monitors touch input states. This detection circuit generates interrupt signals when state transitions occur, eliminating the need for continuous software polling and reducing both power consumption and system complexity while maintaining reliable detection capability
Solution Approach 2:
The detection circuit autonomously monitors the touch input state and self-generates interrupt signals without requiring external software intervention. The circuit independently determines when a long press state begins and ends, and automatically notifies the control unit, thereby reducing the burden on the software system and lowering overall system complexity
2Reliability
If software polling is used to detect continuous long press state, then detection capability is improved, but power consumption increases
Solution Approach 1:
Instead of continuous polling, the system uses event-driven periodic action where the detection circuit generates interrupt signals only when state transitions occur (when long press begins or ends). This allows the control unit to remain in a low-power state during stable conditions and only wake up to process detected events, significantly reducing power consumption while maintaining detection capability
Solution Approach 2:
The patent replaces energy-intensive software polling with a hardware detection circuit that consumes minimal power to monitor input states continuously. The circuit uses simple voltage level detection and timing logic at the hardware level, which is far more energy-efficient than software polling loops, thereby reducing overall power consumption while maintaining reliable detection
3Measurement precision
If interrupt notification is implemented for continuous long press state, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the detection function into distinct hardware components: a detection circuit for monitoring touch input, a timing mechanism for measuring press duration, and an interrupt notification system. This segmentation allows each component to perform its specific function with high precision using simple, dedicated logic, improving detection accuracy without requiring complex integrated processing
Solution Approach 2:
The detection circuit acts as an intermediary between the touch input interface and the control unit. It translates raw touch signals into standardized interrupt notifications with embedded state information, providing accurate detection results to the control unit through a well-defined interface. This intermediary layer simplifies the overall system architecture by handling detection complexity in a dedicated module rather than requiring the control unit to implement complex detection logic
Data Source
AI summary
The present disclosure relates to an electronic device and a control method capable of detecting a continuous long press state. Provided is an electronic device including: an operation unit that outputs an operation signal according to a touch operation by a user; a detection unit that detects a command according to the touch operation on the basis of the output operation signal; and a control unit that executes processing according to the detected command, in which in a case of detecting a long press operation as the touch operation, the detection unit initializes an internal state and notifies the control unit of an interrupt according to a continuous long press state when detecting a break of the command, and the control unit executes processing according to the notified interrupt. The present disclosure can be applied to, for example, an electronic device such as a wireless earphone.