Input Detection Timing Control When the Human Sensor Is Off
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Solution Overview
Problem
Existing electronic apparatuses with human sensors set to OFF status during user approach maintain long driving signal periods, leading to low operability and high power consumption.
Innovation Solution
A controller adjusts the detection timing period of user operations based on the human sensor's status, setting a shorter period when the sensor is OFF and a longer period when it is ON, thereby optimizing power consumption and operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the period of the driving signal is set to a long reference period, then power consumption is reduced, but operability deteriorates when the human sensor is OFF and a user approaches
Solution Approach 1:
The patent applies dynamics by making the detection period adjustable rather than fixed. The controller dynamically changes the detection period based on the human sensor status: using a long reference period when the sensor is ON (low power mode) and switching to a short period when the sensor is OFF (high responsiveness mode). This resolves the contradiction by allowing the system to adapt its timing characteristics to current operational requirements.
Solution Approach 2:
The patent changes the temporal parameter (detection period) based on sensor status. When the human sensor is OFF, the system switches from the reference period to a shorter period, effectively changing the timing parameter to maintain operability. This parameter adjustment allows the system to optimize between power consumption and responsiveness based on whether the sensor is actively monitoring.
2Use of energy by moving object
If the human sensor is set to OFF status to save power, then power consumption is reduced, but detection responsiveness deteriorates
Solution Approach 1:
The system dynamically adjusts the detection period based on the human sensor's operational status. When the sensor is OFF, the controller automatically switches to a shorter detection period, making the input device check user operations more frequently. This dynamic adjustment ensures that even when the sensor is powered down to save energy, the system can still quickly detect when a user approaches or interacts with the device.
Solution Approach 2:
The controller continuously monitors the human sensor status and uses this feedback to adjust the detection period. When the sensor transitions to OFF status, the feedback mechanism triggers a change in the detection timing, switching to a shorter period to maintain responsiveness. This closed-loop feedback ensures the system adapts its behavior based on the sensor's operational state.
Data Source
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AI summary
An electronic apparatus includes a human sensor and a controller. The controller is configured to set a period of detection timings of a user operation to a predetermined input device and turn on/off the human sensor. Further, the controller (a) sets as the period a reference period if the human sensor is in an ON status and a human is not detected by the human sensor, and (b) sets as the period a period shorter than the reference period if the human sensor is in an OFF status.