Portable Camera Dual Stream Wireless Upload
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Solution Overview
Problem
Conventional portable video cameras/recorders lack a secure mechanism to ensure video footage is preserved in case the camera is stolen, broken, or the memory card is removed, leading to a loss of recorded data.
Innovation Solution
A portable video camera/recorder system that generates dual video streams, one at a high bitrate and one at a lower bitrate, with the lower bitrate stream being wirelessly uploaded to a user device upon predetermined emergency-related events, such as pressing a panic button or removal of the camera or memory card, using wireless protocols like Bluetooth or WiFi.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video footage is stored only in local memory, then storage capacity is sufficient, but the video records can be lost if the camera or memory card is stolen
Solution Approach 1:
The patent creates a copy of the video footage by encoding it in two different bitrate streams and storing both in memory. When an emergency event occurs, the lower bitrate stream is uploaded to a remote server, ensuring that a copy of the video record is preserved even if the original camera or memory card is stolen or damaged.
Solution Approach 2:
The patent introduces a remote server as an intermediary to store uploaded video footage. The control circuit uploads the lower bitrate video stream to this external server, which acts as a mediator between the camera and the final storage destination, ensuring video preservation without requiring the original camera to remain intact.
2Reliability
If high bitrate video stream is uploaded, then video quality is maintained, but data transmission time and cost increase
Solution Approach 1:
The patent changes the bitrate parameter of the video stream by creating two versions: a high bitrate stream for local storage and a lower bitrate stream for upload. This parameter change reduces the data size of the uploaded stream, thereby decreasing upload time and data costs while still preserving the video record on the remote server.
Solution Approach 2:
The patent applies different quality levels to different parts of the video storage system. The high bitrate stream is kept locally in the camera's memory for high-quality archiving, while the lower bitrate stream is uploaded to the remote server. This local quality differentiation ensures that the most critical function (quick upload for preservation) uses optimized data size, while local storage maintains full quality.
Data Source
AI summary
An apparatus includes a camera, a memory, and a control circuit. The camera may be configured to generate a first video stream having a first bitrate and a second video stream having a second bitrate. The second bitrate may be lower than the first bitrate. The memory may be configured to store the first video stream and the second video stream. The control circuit may be configured to upload the second video stream from the memory to a user device via a wireless protocol in response to at least one predetermined emergency-related event.