Stylus Charging Bay Connection Control for Low-Power Pairing
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Solution Overview
Problem
Electronic devices face power consumption issues due to continuous scanning for stylus pen advertising messages and potential communication failures due to stylus pen defects, leading to inefficient battery usage and connectivity problems.
Innovation Solution
The electronic device is designed with a housing that allows insertion of a stylus pen, equipped with a wireless charging and communication circuit, to perform scanning and charging at designated intervals, and includes a stylus pen with a power-on control circuit to manage battery states and establish communication connections efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device performs continuous scanning to receive advertising messages from the stylus pen, then the connection reliability is improved, but the power consumption increases
Solution Approach 1:
The electronic device performs scanning operations at predetermined time intervals rather than continuously. The scanning unit scans for advertising messages from the stylus pen periodically, allowing the device to enter low-power states between scanning operations while still maintaining reliable connection detection capability.
2Duration of action of moving object
If the stylus pen is charged continuously to ensure power availability, then the operational readiness is improved, but the power loss from charging increases
Solution Approach 1:
The electronic device provides charging to the stylus pen at predetermined time intervals before the stylus pen actually needs power. The charging unit charges the stylus pen periodically when the stylus pen is in the charging space, ensuring power availability while avoiding continuous charging energy waste.
3Use of energy by moving object
If the electronic device provides charging at predetermined intervals instead of continuously, then the power consumption is reduced, but the charging reliability may worsen
Solution Approach 1:
The determining unit monitors the charging state of the stylus pen and adjusts charging operations accordingly. When the stylus pen is determined to be in a charged state, the electronic device stops providing charging, preventing energy waste while ensuring the stylus pen remains powered. This feedback mechanism maintains charging reliability while reducing power consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces power consumption by controlled scanning and resets defective stylus pens, ensuring reliable wireless communication connections and optimal battery management.
Implementation Method 1
a wireless charging transmitter circuit positioned inside the housing and configured to provide charging to the wireless charging receiver circuit when the stylus pen is inserted into the inner space
Implementation Method 2
Pen input devices (also referred to herein as stylus pens) adopt electromagnetic resonance (EMR) as one input scheme. With the EMR scheme, an electronic device may identify the position of a stylus pen.
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including an inner space, a hole formed through the housing to the internal space, a stylus pen insertable into the internal space through the hole, wherein the stylus pen includes a first wireless communication circuit and a wireless charging receiver circuit, a wireless charging transmitter circuit positioned inside the housing and configured to provide charging to the wireless charging receiver circuit when the stylus pen is inserted into the inner space, a second wireless communication circuit positioned inside the housing, at processor operatively connected to the wireless charging transmitter circuit and the second wireless communication circuit, and at least one memory operatively connected to the processor, wherein when executed, cause the processor to detect whether the stylus pen is inserted into the inner space, and start to provide charging for a first duration.