Command Detection Unit for Low Power Touch Activation
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Solution Overview
Problem
True wireless earphones face design constraints and power consumption challenges, as existing power-saving techniques require continuous operation of the processor module, which is not feasible due to high power consumption, and struggle to efficiently activate the CPU and receive user inputs in a power-saving mode.
Innovation Solution
The electronic apparatus incorporates a processor module with an operation mode and a stop mode, where a user interface unit detects touch operations and outputs signal sequences, and a command detection unit shifts the processor module from the stop mode to the operation mode upon detecting commands, allowing efficient power management and user input recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the processor module operates continuously to detect commands and respond to user inputs, then the responsiveness and user interface functionality are improved, but the power consumption increases significantly
Solution Approach 1:
The touch panel and command detection unit perform preliminary detection of user inputs while the processor module is in stop mode. The command detection unit analyzes touch operations and determines command types before the processor module wakes up, so that when the processor becomes operational, it can immediately execute the identified command without delay, thus maintaining responsiveness while minimizing power consumption during idle periods
Solution Approach 2:
The command detection unit acts as an intermediary between the touch panel and the processor module. It receives raw touch operations from the touch panel, processes them to identify command types, and then triggers the processor module to wake up only when a valid command is detected. This intermediary layer filters out unnecessary processor activations, reducing power consumption while ensuring the processor responds promptly to genuine user commands
2Use of energy by moving object
If the processor module is stopped to save power, then power consumption is reduced, but the ability to receive and process user inputs is lost
Solution Approach 1:
The system performs preliminary detection and analysis of user inputs through the command detection unit before the processor module is activated. Touch operations are captured and analyzed in advance, and the type of command is determined beforehand, ensuring that no user input information is lost even though the main processor remains in stop mode during these preliminary detection phases
Solution Approach 2:
The command detection unit is designed to autonomously detect touch operations, analyze them, and determine command types without requiring the processor module to be operational. This self-service capability allows the system to maintain user input detection functionality while keeping the power-hungry processor module in stop mode, effectively decoupling input detection from full processor operation
3Speed
If the processor module wakes up frequently to check for user inputs, then user input responsiveness is improved, but power consumption increases
Solution Approach 1:
The command detection unit serves as an intelligent intermediary that filters and pre-processes user inputs before triggering processor module activation. It only wakes up the processor when a valid command is actually detected, rather than having the processor wake up continuously or frequently to check for inputs. This selective activation approach maintains fast response to genuine commands while dramatically reducing unnecessary wake-up events and associated power consumption
Solution Approach 2:
The system performs preliminary analysis of touch operations to determine whether they constitute valid commands before activating the processor module. By pre-analyzing the nature and type of touch input through the command detection unit, the system ensures rapid activation only when necessary, avoiding frequent unnecessary wake-ups while maintaining the appearance of immediate responsiveness to legitimate user commands
Data Source
AI summary
The present invention is an electronic apparatus including a processor module including an operation mode in which a predetermined control program is executed by receiving supply of an operation clock, and a stop mode that is stopped without receiving supply of the operation clock, a user interface unit that detects a touch operation by a user and outputs an operation signal sequence corresponding to the detected touch operation, and a command detection unit that detects a command corresponding to the touch operation on the basis of the output operation signal sequence. The command detection unit performs, in a case of having detected the command in a case where the processor module is in the stop mode, control so that the processor module shifts from the stop mode to the operation mode.