Smart Lock Camera Recording Triggered by Door Status

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Solution Overview

Problem

Existing security systems face vulnerabilities such as reliance on internet connectivity, difficulty in installation due to cabling, and energy consumption, making them unreliable for continuous video recording and data transfer.

Innovation Solution

An intelligent door lock system integrated with a camera that records in response to door lock status, using Bluetooth communication to initiate recording upon door opening and closing, eliminating the need for continuous internet connection and cabling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If continuous video recording is implemented using existing security systems, then video capture capability is improved, but internet dependency and system vulnerability increase

Engineering Contradiction:

Improvevideo recording reliabilityVSAvoidinternet dependency vulnerability

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The camera system performs self-service by autonomously detecting door lock status changes and initiating video recording locally without requiring external internet commands or cloud service coordination. The system serves itself by using its own sensor inputs to trigger recording actions independently.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent extracts the internet dependency from the video recording function by implementing local autonomous operation. The camera and lock system operate independently of internet connectivity, removing the harmful dependency while preserving the core video recording capability.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If multiple cameras are connected via cabling for video transmission, then video capture capability is improved, but installation difficulty increases

Engineering Contradiction:

Improvevideo transmission reliabilityVSAvoidinstallation ease

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical cabling system with a wireless communication system. The camera transmits video data wirelessly to the mobile device, eliminating the need for physical cable routing through walls and doorways, thereby dramatically simplifying installation while maintaining reliable video transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If continuous video recording is implemented, then security monitoring capability is improved, but energy consumption increases

Engineering Contradiction:

Improvesecurity monitoring capabilityVSAvoidcamera energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Instead of continuous recording, the system implements periodic action by triggering video recording only at specific moments when door lock status changes are detected. The camera remains in a low-power state between events and activates only when needed, significantly reducing overall energy consumption while maintaining effective security monitoring.

Inventive Principle:

Principle #19Periodic action

4Loss of information

If video recording is triggered by door lock status, then recording relevance is improved, but system complexity increases

Engineering Contradiction:

Improverecording information relevanceVSAvoidsystem integration complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent merges the door lock system and camera system into a single integrated security device. By combining these previously separate systems, the patent eliminates the need for complex external communication and coordination between independent systems, reducing overall system complexity while enabling event-triggered recording functionality.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12460447B2Video recording triggered by a smart lock device

Publication Date: 2025.11.04 MASTER LOCK CO INC

AI summary

An intelligent door lock system for a door at a dwelling. The intelligent door lock system includes a door status device is at the dwelling, an engine, an energy source, a memory, and a camera. The door status device is coupled to a drive shaft of a lock device to assist in locking and unlocking a lock of a lock device at the door. The lock device is coupled to the door status device and includes a bolt. The engine, the energy source, and the memory are coupled together. The camera is configured to record in response to door lock status.