Vehicle Parking Video Recording With Mobile Key Motion Filtering

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Solution Overview

Problem

Existing video recording devices for vehicles face challenges in meeting consumer demand for long-time recording in a parked state, particularly due to battery limitations and inefficient power management during motion detection.

Innovation Solution

A video recording device with a motion detection sensor and controller that determines recording based on mobile key detection and motion detection, including criteria such as object number, velocity, and position, to optimize power usage and extend recording time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If always-on parking recording is performed continuously while the vehicle is parked, then recording coverage is improved, but battery consumption increases and recording time is limited

Engineering Contradiction:
Improverecording coverageVSAvoidbattery consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system transitions from continuous recording to periodic recording by activating the recording function only when motion is detected by the motion detection sensor. The controller periodically checks for motion events and triggers recording only during these events, rather than maintaining continuous recording operation. This periodic activation pattern significantly reduces battery consumption while ensuring that actual events are captured.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The motion detection sensor automatically detects motion events and triggers the recording function without requiring continuous controller operation. The sensor serves itself to monitor the environment and activate recording only when necessary, enabling the system to self-regulate power consumption based on actual recording needs rather than relying on continuous controller monitoring.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If the controller is frequently turned on or off due to motion detection by driver boarding and alighting, then motion detection sensitivity is improved, but system operation efficiency deteriorates

Engineering Contradiction:
Improvemotion detection sensitivityVSAvoidsystem operation efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The mobile key detection function serves as an intermediary that distinguishes between driver-related motion (boarding/alighting) and other motion events. When a mobile key is detected, the system identifies the motion as driver activity and suppresses unnecessary recording triggers, allowing the controller to remain in sleep mode. This intermediary detection mechanism prevents frequent controller activation while maintaining accurate motion detection for actual events requiring recording.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If recording is performed based on any motion detection, then event capture capability is improved, but power consumption increases due to unnecessary recording

Engineering Contradiction:
Improveevent capture capabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The system dynamically adjusts its recording behavior based on the type of motion detected. Rather than using a static always-on recording mode, the controller evaluates motion detection data in real-time and adapts its recording activation accordingly. When motion is detected, the system determines whether the motion warrants recording based on additional criteria such as mobile key detection and velocity thresholds, creating a dynamic response that optimizes power consumption while maintaining event capture capability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters (recording activation state) based on detected motion parameters (velocity, object type, mobile key presence). By monitoring and responding to changes in motion parameters, the system activates recording only when parameter changes indicate a genuine event requiring documentation, rather than responding to all motion equally. This parameter-based differentiation reduces unnecessary recording while ensuring actual events are captured.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250385983A1Video Recording System for Vehicle and Method of Controlling the Same
Publication Date: 2025.12.18 HYUNDAI MOTOR CO LTD
  • US20250385983A1 patent drawing
  • US20250385983A1 patent drawing
  • US20250385983A1 patent drawing

AI summary

Disclosed is a video recording device including a camera module configured to acquire a video of the surroundings of a vehicle, a motion detection sensor configured to detect a motion of a nearby object, a first memory configured to store the video, and a controller configured to control the storing of the video and including a second memory configured to store a computer program for storing the video and a processor configured to execute the computer program, wherein, when the computer program is executed by the processor, the controller is configured to determine whether to store the video based on mobile key detection and motion detection.