Sensor Block for Image Sensor Privacy Control
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Solution Overview
Problem
Existing computing devices with image sensors lack effective mechanisms to prevent unauthorized image data capture, especially when applications operate the sensors without user awareness.
Innovation Solution
A sensor block system that can switch between transparent and opaque modes using smart glass or stacked polarizers, controlled by a controller based on recognition data, time, location, or user settings, to inhibit image sensor inputs and prevent image data capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the image sensor operates continuously to capture images, then the image capture functionality is improved, but the security risk of unauthorized capture increases
Solution Approach 1:
The patent implements a dynamic sensor block that can switch between transparent and opaque states based on operational conditions. The block transitions from a static component to a dynamic one that adapts its light-blocking properties in real-time, allowing the sensor to capture images only when authorized while blocking unauthorized access.
Solution Approach 2:
The sensor block acts as an intermediary component between the external environment and the image sensor. It mediates light transmission to the sensor, controlled by a controller that receives authorization signals. This intermediary mechanism enables secure control over image capture without preventing the sensor from functioning when authorized.
2Object-affected harmful factors
If the sensor block blocks light to prevent unauthorized capture, then security is improved, but the image capture functionality deteriorates
Solution Approach 1:
The sensor block dynamically adjusts its light-blocking properties based on authorization status. When unauthorized, it blocks light to prevent capture; when authorized, it becomes transparent to allow normal image capture. This dynamic behavior resolves the contradiction between security and functionality.
Solution Approach 2:
The patent changes the optical parameter (transparency) of the sensor block based on control signals. The block transitions between transparent and opaque states, altering its light transmission properties to match the required security level while maintaining image capture capability when needed.
3Object-affected harmful factors
If a physical cover is used to block the sensor, then security is improved, but the device complexity and ease of operation worsen
Solution Approach 1:
The patent replaces mechanical cover systems with an optically controlled sensor block. Instead of requiring physical movement of covers or shutters, the system uses a controllable material that changes its optical properties electrically, eliminating complex mechanical structures while maintaining security functionality.
Solution Approach 2:
The sensor block changes its optical parameters (transparency, opacity) in response to electrical control signals. This eliminates the need for mechanical actuation, reducing device complexity while providing the same security function through a simpler, electronically controlled mechanism.
4Ease of operation
If the sensor operates without restriction, then ease of operation is improved, but security control deteriorates
Solution Approach 1:
The sensor block serves as an intermediary controlled by a controller that mediates between the sensor and external access. It allows the sensor to remain accessible and operational while enforcing security policies through controlled transparency, maintaining ease of operation for authorized users while blocking unauthorized access.
Solution Approach 2:
The sensor block automatically adjusts its transparency state based on control signals without requiring user intervention. The system self-regulates sensor access based on authorization status, maintaining ease of operation while providing automatic security control.
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
Enables secure control over image sensor operations, ensuring that image data is not captured without user consent, even when applications are using the sensor, by effectively blocking light inputs and preventing useful image capture.
Implementation Method 1
A sensor block can comprise a filter made of a smart glass that is configured to receive signals (e.g., electrical signals) to operate in a first mode where the smart glass is transparent allowing the sensor to receive inputs and capture images of the surroundings of the device. The smart glass can be configured to receive signals to operate in a second mode where the smart glass is opaque inhibiting the sensor from receiving inputs to capture images of the surroundings of the device.
Implementation Method 2
A sensor block can comprise a filter made of a stacked polarizer that can be operated in a first mode where the stacked polarizer is inactivated allowing the sensor to receive inputs and capture images of the surroundings of the device. The stacked polarizer can be operated in a second mode where a plurality of the polarizers of the stacked polarizers are activated inhibiting the sensor from receiving inputs to capture images of the surroundings of the device.
Data Source
AI summary
Embodiments of the present disclosure include apparatuses and methods for sensor blocking. In a number of embodiments, a method can include operating a sensor block of an apparatus in a first mode to allow a sensor to receive inputs, and operating the sensor block in a second mode to inhibit the sensor from receiving the inputs. A sensor block can be used to prevent a sensor, such as an image sensor, from receiving an input, such as a light source input, to capture image data. A sensor block can be used to prevent a sensor from capturing image data even when an application causing to the sensor to operate, such as when applications have access to the sensor, but the user of a device is unaware that an application is using the sensor. The sensor block can be used to prevent the sensor from capturing useful images and the sensor can only capture a black image of the sensor block and not the surroundings of the device.