Video Capture Glasses With Loop Buffer for Longer Wearable Recording
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Solution Overview
Problem
Existing wearable video recording devices suffer from low battery capacity, limiting continuous video recording time and user convenience, especially in first-person perspectives.
Innovation Solution
A glasses-mounted video recording apparatus with integrated batteries, eye-tracking technology, and a 20-second loop capture mechanism, enabling continuous video capture and storage, and wireless communication for seamless video transfer and editing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wearable video recording devices are made smaller and more portable, then ease of operation and convenience are improved, but battery capacity is reduced, limiting continuous recording time
Solution Approach 1:
The system continuously captures video in a 20-second loop buffer before the user activates recording. When the capture button is pressed, the system immediately saves the preceding 20 seconds plus the next 20 seconds, eliminating the need for users to anticipate the exact moment to start recording and ensuring no important moments are missed.
Solution Approach 2:
A mobile device serves as an intermediary between the glasses-mounted camera and the user. The mobile device receives video clips via Bluetooth or Wi-Fi, provides a user interface for controlling recording parameters, and handles video storage and sharing, thereby reducing the complexity and power consumption of the wearable device.
2Duration of action of moving object
If battery capacity is increased to extend continuous recording time, then duration of action is improved, but device weight and size increase, reducing portability
Solution Approach 1:
The video recording system is segmented into two parts: a lightweight glasses-mounted camera that continuously captures video with minimal power consumption, and a mobile device that handles power-intensive operations such as video processing, storage, and sharing. This segmentation allows the wearable device to maintain extended recording capability without requiring large battery capacity.
Solution Approach 2:
The system uses periodic video capture in 20-second loops rather than continuous uninterrupted recording. Video is captured in discrete segments, transferred to mobile storage periodically, and the buffer is cleared and reused. This periodic action pattern reduces the power consumption and storage requirements of the wearable device while maintaining the ability to record extended periods.
3Productivity
If video is continuously captured and stored in memory, then productivity and capture reliability are improved, but memory capacity is consumed quickly, requiring frequent management
Solution Approach 1:
The system implements a circular buffer mechanism where video data is continuously written to a 20-second loop in memory. Once the buffer is full, the oldest data is automatically overwritten by new data. When the user activates capture, the current buffer contents are saved to permanent storage, and the buffer is reset and reused. This allows continuous recording capability while managing limited memory resources efficiently.
Solution Approach 2:
Video data is extracted from the continuous capture buffer and transferred to the mobile device's storage medium. This extraction removes the burden of long-term storage from the wearable device's limited memory, allowing the glasses-mounted camera to maintain continuous capture capability with minimal memory requirements.
Data Source
AI summary
A set of glasses frames includes electronic components for video capture and is configured to continuously capture video in a twenty-second loop. On the frames is a capture button that, when pressed, causes the electronic circuitry to store the prior twenty seconds and the following twenty seconds, for a total of forty seconds of video in non-transitory memory. The electronic circuitry in the frames also includes a Bluetooth radio and a Wi-Fi radio, enabling the frames to communicate with a mobile device, and more particularly to provide the saved twenty-second video clips to an app running on the mobile device. The app allows for storage of the video clips on the phone, editing of the video clips, upload of the video clips to the Internet, and configuring user-adjustable settings on the electronic circuitry of the glasses.