Video Data Recording Transmission Device Segmentation
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Solution Overview
Problem
Conventional video cameras experience decreased immediacy in network transmission of video data as recording time lengthens, leading to increased network load due to larger data capacities, which is undesirable.
Innovation Solution
A data recording transmission device with a controller that manages data recording and transmission by dividing data into units based on predetermined time or size, transmitting these units through a network, and updating management information to combine new data with existing units, thereby reducing transmission time and network load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If video data is transmitted after capturing is terminated, then the transmission process is simple, but the immediacy of network transmission decreases when recording time is long
Solution Approach 1:
The patent divides continuous video recording into multiple unit data segments with predetermined time or size limits. Each segment is managed as a separate file with its own management information recorded on the management table, enabling incremental transmission while maintaining operational simplicity.
Solution Approach 2:
The system performs preliminary actions by automatically creating management information for each unit data segment as it is recorded. This preparation allows transmission to begin immediately when each segment is complete, without waiting for the entire recording session to end.
2Duration of action of moving object
If video recording time is extended, then more complete video data is captured, but the capacity of video data to be transmitted increases and transmission time becomes longer
Solution Approach 1:
By segmenting video data into smaller unit files with predetermined size or time limits, the system enables transmission of manageable portions. This reduces the transmission time for each individual file while allowing extended recording durations through continuous segmentation and incremental transmission.
Solution Approach 2:
The system implements periodic transmission by automatically transmitting each unit data segment after it is recorded, rather than waiting for the entire recording session. This periodic action maintains consistent transmission intervals regardless of total recording duration.
3Quantity of substance
If large capacity video data is transmitted through the network, then complete recording data is transferred, but the load applied to the network increases
Solution Approach 1:
The patent segments large video data into smaller unit data files, each transmitted separately through the network. This segmentation reduces the network load for each transmission event while still transferring the complete video data over time, preventing network overload.
Solution Approach 2:
The system transmits partial data (unit segments) rather than waiting to transmit all data at once. This partial transmission approach reduces instantaneous network load while ensuring complete data transfer through cumulative transmission of all segments.
Data Source
AI summary
A controller records management information of a file for transmission including unit data on a management table when a recording medium I/F records the unit data in a recording medium. The controller transmits the file for transmission to an external device by a network I/F. The controller erases the management information of the file for transmission after transmitting the file for transmission, and records the management information of the file for recording including the unit data on the management table. The controller updates the management information of the file for recording to management information obtained by combining new unit data with the unit data included in advance whenever the recording medium I/F records the new unit data in the recording medium, records the management information of the file for transmission on the management table, and erases the management information of the file for transmission after transmitting the file for transmission.