Video Camera Recording Control for Network Reliability
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Solution Overview
Problem
Video cameras with hard disk recording media face challenges in reliably storing and retrieving AV data due to the high cost and limited capacity of hard disks, as well as unreliable network connectivity, which can prevent recording or reproduction of AV data when communication with a network is poor.
Innovation Solution
A recording and reproducing apparatus that includes a transmitting and receiving unit, a recording medium, and a control unit to monitor and manage the recording and reproduction processes, allowing data to be stored on both a network server and a built-in hard disk, ensuring reliable recording and playback even when network connectivity is bad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a hard disk is used as the recording medium in a video camera, then the recording capacity and quality of AV data are improved, but the cost increases and the preservability of AV data becomes insufficient
Solution Approach 1:
The patent divides the recording system into two segments: a hard disk for primary high-capacity recording and an external storage unit for backup. This segmentation allows the system to leverage the large capacity of the hard disk while ensuring data preservability through external backup, resolving the contradiction between capacity and reliability.
2Reliability
If a hybrid type video camera with two recording media of a DVD and a hard disk is used, then the preservability of AV data is improved, but the mechanism of the video camera body becomes complicated and its size and weight increase
Solution Approach 1:
The patent extracts the backup storage function from the camera body by using an external storage unit connected via communication means. This eliminates the need for a second internal drive mechanism, reducing device complexity while maintaining data preservability through external backup.
3Device complexity
If a network-compatible video camera that stores data in a large capacity storage unit on a network is used, then the device complexity is reduced, but the reliability of recording and reproduction becomes dependent on network communication state
Solution Approach 1:
The patent performs preliminary backup action by automatically copying AV data from the hard disk to an external storage unit via communication means before network issues occur. This preliminary action ensures that data is preserved locally even when network communication fails, maintaining recording reliability while using a relatively simple storage system.
Data Source
AI summary
To provide a recording and reproducing apparatus capable of storing AV data reliably during recording and capable of reading the AV data reliably during reproducing even when the communication state between the video camera and a network is bad, the recording and reproducing apparatus neither failing to record nor reproduce AV data, the recording and reproducing apparatus improving the recording reliability and reproduction reliability of AV data. With a unit for determining whether the communication state is good or bad, the recording and reproducing reliability is improved by carrying out recording and reproducing of AV data to a hard disk of the recording and reproducing apparatus by utilizing a built-in hard disk when the communication state is bad.