Controlling Device Removal Detection With Periodic Signals

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Solution Overview

Problem

The hospitality industry experiences a high attrition rate of controlling devices, such as remote controls, due to frequent misplacement or removal by guests, leading to operational inefficiencies and maintenance challenges.

Innovation Solution

A controlling device adapted to periodically transmit status signals to a paired decoder box, which alerts the facility's central distribution server if the signal is not received within a specified time, triggering maintenance alerts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If controlling devices are provided as standard guest room equipment, then guest convenience is improved, but device attrition rate increases

Engineering Contradiction:
Improveguest convenienceVSAvoiddevice attrition rate
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system implements a feedback mechanism where the decoder box monitors for periodic status signals from the controlling device. When the device is removed or misplaced, the system detects the absence of signals and generates alerts to the front desk, enabling timely recovery of the device while maintaining guest convenience.

Inventive Principle:
Principle #23Feedback

2Reliability

If periodic status signals are transmitted by the controlling device, then device removal detection is improved, but energy consumption increases

Engineering Contradiction:
Improvedevice removal detectionVSAvoidbattery power consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The controlling device transmits status signals periodically rather than continuously, allowing the device to enter low-power states between transmissions. This periodic action maintains reliable detection capability while significantly reducing battery power consumption.

Inventive Principle:
Principle #19Periodic action

3Loss of time

If the decoder box monitors for status signals continuously, then device removal detection speed is improved, but processing load increases

Engineering Contradiction:
Improvedetection speedVSAvoidprocessing load
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The decoder box is pre-configured with expected signal parameters and detection thresholds. When a status signal is received, the system performs a simple presence/absence check rather than continuous complex analysis, reducing processing load while maintaining fast detection capability.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12425685B2System and method for detecting the removal of a controlling device
Publication Date: 2025.09.23 UNIVERSAL ELECTRONICS INC
  • US12425685B2 patent drawing
  • US12425685B2 patent drawing
  • US12425685B2 patent drawing

AI summary

A system and method for using a controllable appliance to report an inoperable state of a controlling device. The appliance is caused to repeatedly determine, at a first predetermined timed interval, if a wireless notification signal, repeatedly transmitted by the controlling device at a second predetermined timed interval, has been received from the controlling device. When the wireless notification signal has not been received from the controlling device within the first predetermined timed interval, the appliance is caused to issue a status notification that the controlling device is in an inoperable state.