Communication Apparatus for Dual-Path Routing of Camera Packets
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Solution Overview
Problem
In systems requiring time synchronization between multiple cameras for generating high-definition virtual viewpoint images, data loss occurs due to varying packet sizes exceeding communication band limitations, leading to incomplete data transmission during synchronization intervals, especially when capturing moving subjects.
Innovation Solution
A communication apparatus with a generation unit, reception unit, calculation unit, and transmission unit that determines whether the sum of packet sizes exceeds a threshold, routing packets through multiple transmission paths to prevent data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image data is transmitted in response to each synchronization signal, then time synchronization accuracy is maintained, but data loss occurs when packet size exceeds communication band capacity
Solution Approach 1:
The patent segments the transmission of image data by dividing packets into multiple smaller packets that can be transmitted sequentially over time. This allows the total data to be sent within the communication band capacity constraints while maintaining synchronization accuracy, as each small packet is transmitted in response to synchronization signals without exceeding the band limit.
Solution Approach 2:
The patent dynamically adjusts the transmission timing and packet size based on the communication band capacity and synchronization signal intervals. The system adapts the transmission schedule to ensure that packets are sent in a way that prevents data loss while maintaining synchronization, allowing flexible management of variable packet sizes.
2Reliability
If packet transmission frequency is increased to capture moving subjects, then data completeness improves, but communication band overload occurs
Solution Approach 1:
The patent segments large packets into multiple smaller packets, allowing more frequent transmissions without overloading the communication band. Each small packet can be transmitted in response to synchronization signals, increasing the effective transmission frequency while keeping individual packet sizes manageable to prevent band overload.
Solution Approach 2:
The patent uses periodic transmission in response to synchronization signals to manage data flow. By transmitting packets periodically rather than continuously, the system maintains data completeness for moving subjects while regulating communication band usage through the rhythmic timing of transmissions.
3Device complexity
If single transmission path is used, then device complexity is reduced, but data loss occurs during high data size transmission
Solution Approach 1:
The patent introduces a time dimension to the transmission process by sending multiple packets sequentially over multiple synchronization signal intervals. This temporal dimension allows the system to transmit large amounts of data without requiring additional spatial transmission paths, maintaining simplicity while preventing data loss through time-based packet distribution.
Data Source
AI summary
A communication apparatus generates a packet, receives a packet from a first other apparatus, calculates a sum value of a data size of the generated packet and a data size of the received packet, in a case where it is determined the sum value does not exceed a threshold value, transmits the generated packet and the received packet to a second other apparatus via a first transmission path and, in a case where it is determined that the sum value exceeds the threshold value, transmits the received packet to the second other apparatus via the first transmission path and transmits the generated packet to the second other apparatus via a second transmission path.