Wireless Input Listening Schedule for Lower Power Consumption
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Solution Overview
Problem
Wireless input devices, such as presentation pens, face high power consumption due to continuous listening states, which deplete their limited battery capacity quickly.
Innovation Solution
The wireless input device periodically switches between signal transmission and listening states with defined time intervals, reducing power consumption without affecting communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless input device maintains a constant listening state to ensure continuous communication with the receiving device, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The wireless input device periodically switches between listening states and low-power states instead of maintaining a constant listening state. The device activates the listening function at specific time intervals to receive commands from the receiving device, then transitions to a low-power state when no communication is needed. This periodic operation maintains communication reliability while significantly reducing power consumption of the presentation pen.
2Use of energy by moving object
If the wireless input device periodically switches to listening state with time intervals to reduce power consumption, then power consumption is reduced, but communication responsiveness may be affected
Solution Approach 1:
The wireless input device performs preliminary actions by proactively transmitting pending signals to the receiving device before entering low-power listening intervals. This ensures that the receiving device has the necessary information in advance, maintaining communication efficiency even when the input device is in a low-power state. The device also maintains a buffer for incoming commands and processes them efficiently upon waking from low-power mode.
Data Source
AI summary
A wireless input device, a wireless input system, and a control method thereof are provided. The wireless input device includes a wireless transceiver and a processor. The wireless transceiver communicates with a receiving device through a wireless communication protocol. The processor is coupled to the wireless transceiver. The processor controls the wireless transceiver to: periodically switch the wireless transceiver into a signal transmission state to transmit a pending signal to a specific frequency band corresponding to the wireless communication protocol, wherein a first time interval is defined between the signal transmission states; and periodically switch the wireless transceiver into a listening state to receive incoming signals from the specific frequency band, wherein the operation periods of the signal transmission state and the listening state are mutually separated, and a second time interval is defined between the listening states.