Portable Loop Recording System Memory Management
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Solution Overview
Problem
Existing loop recording systems are not suitable for portable consumer applications due to their large size, high power requirements, high cost, and inability to efficiently manage memory, leading to data loss and difficulties in remote operation, sharing, and multi-user collaboration.
Innovation Solution
A portable loop recording system that allows users to define or set programmable recording intervals, prevents unwanted data loss by overwriting only when instructed, and supports multiple users and devices for synchronized recording and sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If large disk drive capacities are used to enable capture of many hours of video and audio, then the recording duration is improved, but the system size, power requirements, and cost increase making it unsuitable for portable applications
Solution Approach 1:
The patent divides the storage medium into multiple segments or partitions, each capable of holding a complete recording cycle. This segmentation allows the system to achieve long effective recording duration through loop recording across multiple segments without requiring a single large storage capacity, thus reducing the physical size and weight of the portable device.
Solution Approach 2:
The system implements loop recording where recordings are periodically overwritten in a cyclic manner. When the storage medium is full, the system automatically starts overwriting from the beginning, creating a periodic action pattern. This allows the device to continuously record indefinitely without needing large storage capacity, as only the most recent recording cycles are retained.
2Device complexity
If automatic overwriting from the beginning of memory is implemented, then the device complexity is reduced, but the memory capacity is not efficiently used and data loss occurs
Solution Approach 1:
The system performs preliminary actions by designating specific portions of the storage medium for recording before actual recording begins. It pre-establishes recording parameters such as record length and record number, and prepares the storage medium with appropriate segmentation. This preliminary setup enables more efficient memory utilization and prevents unnecessary data loss while maintaining relatively simple device complexity.
3Reliability
If the system is designed for permanent installations with large size, then the recording stability is improved, but the ease of operation and accessibility for portable applications deteriorates
Solution Approach 1:
The patent implements dynamic loop recording functionality in a portable device, allowing the system to adaptively manage recording parameters such as record length and record number. The system can dynamically adjust between different recording modes and efficiently manage storage resources, providing recording stability comparable to permanent installations while maintaining the portability and ease of operation required for consumer applications.
Data Source
AI summary
A loop recording system allows users to remotely save and share short recorded video, audio, or combination clips using portable devices equipped with cameras, microphones, and sensors. The loop recording system enables users of portable devices, such as smartphones, tablets, smart watches, etc., to record moments of interest during live events (hereinafter called “loops”, “recordings”, or “loop recordings”), while preventing unwanted data loss and conserving memory resources of the portable device. In exemplary embodiments, the loop recording system has loop recording intervals that can be defined by the user or can be predetermined, certain recordings can be automatically saved rather than overwritten, and/or the number of recordings that are saved may be programmable by the user or predetermined. The loop recording system can also prevent unwanted erasure of data, facilitating the tagging of loops, sharing of loops, and enhancing the loops using post processing means.