LED Privacy Notifier Tampering Detection

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Solution Overview

Problem

The integration of image recording devices in consumer electronics, such as smart glasses, raises concerns about privacy invasions as they can covertly record individuals without consent, leading to social aversion and the need for assurance that images are not being inadvertently or surreptitiously recorded.

Innovation Solution

A computer-implemented method that activates a privacy notifier mechanism using a light-emitting diode (LED) to transmit a privacy notification signal, which can detect blocking and disable the camera system if tampering is detected, ensuring transparency and consent for image capture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If a privacy notifier mechanism (LED) is activated to transmit privacy notification signals, then transparency and user awareness are improved, but the system becomes vulnerable to tampering that can block the notification signal

Engineering Contradiction:
Improveprivacy notification visibilityVSAvoidnotification system integrity
Core Design Contradiction:
Loss of informationVSReliability

Solution Approach 1:

The system implements feedback by having the LED serve dual functions: emitting light as a privacy notifier and detecting ambient light levels to verify its own operational status. The processor monitors the LED's ability to detect ambient light, creating a self-verification feedback loop that detects tampering attempts blocking the notification signal.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The LED performs self-service by using its own photodetector capability to monitor ambient light conditions and report its operational status to the processor. This self-monitoring mechanism allows the system to detect when the LED is blocked or tampered with without requiring external monitoring hardware.

Inventive Principle:
Principle #25Self-service

2Reliability

If the LED is used in photodetector mode to detect ambient light and verify its own operation, then tampering detection capability is improved, but the device complexity increases

Engineering Contradiction:
Improvetampering detection accuracyVSAvoidcontrol circuit requirements
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The LED is designed with multi-functionality, serving both as a light emitter for privacy notification and as a photodetector for ambient light sensing and tampering detection. This universal component approach eliminates the need for separate detection hardware, reducing overall device complexity while maintaining reliable tampering detection.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the notification function and detection function into a single LED component. By combining these functions, the system reduces the number of separate components and control circuits needed, thereby reducing device complexity while achieving reliable tampering detection through the LED's dual operational modes.

Inventive Principle:
Principle #5Merging (Combining)

3Object-affected harmful factors

If the camera is disabled upon detection of tampering, then privacy protection is improved, but the loss of recording functionality occurs

Engineering Contradiction:
Improveunauthorized recording preventionVSAvoidrecording system availability
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The system applies preliminary anti-action by proactively disabling the camera before unauthorized recording can occur. When tampering is detected through the LED's photodetector mode, the processor immediately disables the camera, preventing potential privacy violations before they can happen.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The patent implements preliminary action by continuously monitoring the LED's operational status through its photodetector capability and disabling the camera in advance of any unauthorized recording. This preemptive measure ensures privacy protection is activated before harmful unauthorized recording can take place.

Inventive Principle:
Principle #10Preliminary action

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

The solution effectively addresses privacy concerns by visually indicating the camera's status and disabling the camera upon detection of tampering, thereby preventing unauthorized recording and enhancing user trust in the use of body-worn cameras.

Implementation Method 1

The privacy notifier mechanism includes a light emitting element which, in a first operation state, transmits the privacy notification signal by emitting light

Methodology Applied
Scientific EffectLight emitting diode effect: Light Emitting Diode

Implementation Method 2

activating, by the processor, the privacy notifier mechanism includes forward biasing the LED to emit light

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 3

detecting blocking of the transmission of the privacy notification signal includes detecting blocking of light emitted by the LED

Methodology Applied
Scientific EffectPhotodetection: Photoelectric Effect

Data Source

PatentUS11671695B2Systems and methods for detecting tampering with privacy notifiers in recording systems
Publication Date: 2023.06.06 GOOGLE LLC
  • US11671695B2 patent drawing
  • US11671695B2 patent drawing
  • US11671695B2 patent drawing

AI summary

A computer-implemented method includes activating, by a processor, a privacy notifier mechanism in a recording system to transmit a privacy notification signal when a camera in the recording system is in a ready state to capture images. The method further includes detecting blocking of transmission of the privacy notification signal, and responsive to detecting blocking of the transmission of the privacy notification signal by the processor, disabling the camera.