Near-field Communication Module for Automatic Event-triggered Video Capture
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Solution Overview
Problem
In emergency situations, information-capturing devices are often started too late, capturing media data from a single angle, and some devices lack networking capabilities to inform remote servers promptly, leading to incomplete or delayed data capture.
Innovation Solution
An information-capturing device equipped with a near-field communication module, video recording unit, and controlling unit that automatically starts recording ambient data when an event message is received, and can broadcast the message to neighboring devices or a remote server if it does not match the intended device, enabling multi-angle capture and remote event reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual activation is used to start information-capturing devices, then users can control when recording begins, but in emergency situations it is too late to start the devices by hand and crucial images and sounds are not captured
Solution Approach 1:
The system performs preliminary actions by having information-capturing devices in standby mode and automatically activating them when an event message is detected. The near-field communication module receives event messages and triggers automatic recording without requiring manual user action, thus capturing crucial data immediately when emergencies occur.
2Adaptability or versatility
If each police officer carries only one information-capturing device, then the device is simple to manage, but media data are captured from a single angle rather than multiple angles
Solution Approach 1:
The system merges multiple information-capturing devices into a coordinated networked system. Multiple devices capture data from different angles and locations, and the event message propagation mechanism ensures all nearby devices are activated simultaneously, combining their footage into comprehensive multi-angle coverage of the emergency event.
Solution Approach 2:
Each information-capturing device is designed with universal functionality including near-field communication capabilities, event message reception, and automatic activation. This multi-functionality allows any device in the network to serve multiple roles: capturing local data, receiving event messages, and propagating alerts to other devices, thereby enabling versatile multi-angle capture without requiring specialized equipment for each device.
3Loss of information
If information-capturing devices lack networking capabilities, then the device structure is simpler, but they cannot inform a remote server of an event as soon as it occurs
Solution Approach 1:
The system uses an intermediary approach where information-capturing devices that lack direct networking capabilities can still report events by receiving and propagating event messages through the near-field communication network. Devices with networking capabilities act as intermediaries that forward event information to remote servers, enabling event reporting functionality without requiring all devices to have complex networking hardware.
Data Source
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AI summary
An information-capturing device includes a near-field communication module, a video recording unit, a storing unit, and a controlling unit. The controlling unit is coupled to the near-field communication module, the video recording unit, and the storing unit. The near-field communication module receives an event message including a destination information. The video recording unit captures an ambient data. The storing unit stores a first identification code. The controlling unit compares the first identification code with the dedicated identification code specified by the destination information contained in the event message. The controlling unit starts the video recording unit if the first identification code matches the dedicated identification code specified by the destination information contained in the event message. The controlling unit broadcasts the event message through the near-field communication module if the first identification code does not match the dedicated identification code specified by the destination information contained in the event message.