Projector Relay Image Transfer Reducing Network Load
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Solution Overview
Problem
Current technologies for transmitting image data to multiple projectors either overload the network when using unicast or require multicast-capable routers, which can be cumbersome to set up and manage.
Innovation Solution
An image transfer method where a projector receives image data and a transmission destination information list, updates the list, and sequentially transfers the data to other projectors within the same or different network segments, reducing the load on the image supply unit and network by minimizing the number of hops and process steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unicast transmission is used to send image data to multiple projectors, then each projector can receive the data individually, but the image supply unit and network experience heavy load
Solution Approach 1:
The patent segments the transmission process into two phases: first, the image supply unit transmits data to a single selected projector; second, that projector relays the data to other projectors. This segmentation avoids the image supply unit handling all transmissions directly, reducing its load while maintaining reliable data delivery to all projectors.
Solution Approach 2:
The patent introduces an intermediary mechanism where a selected projector acts as a relay node. This intermediary receives data from the image supply unit and forwards it to other projectors, distributing the transmission burden and reducing the load on the image supply unit and network infrastructure.
2Productivity
If multicast transmission is used to send image data to multiple projectors, then network load is reduced, but a multicast-capable router is required and transmission destination list must be registered in advance
Solution Approach 1:
The patent extracts the multicast function from the network router and relocates it to the projector level. Instead of requiring multicast-capable routers, each projector independently manages its own transmission destination list and relay operations, eliminating the need for complex multicast infrastructure.
Solution Approach 2:
The patent implements self-service by allowing each projector to autonomously maintain its own transmission destination list and make decisions about data relay based on local information. This eliminates the need for centralized multicast configuration and router intervention, simplifying the overall system architecture.
3Productivity
If multicast transmission is used to send image data to multiple projectors, then network load is reduced, but transmission destination list must be registered in advance
Solution Approach 1:
The patent introduces dynamic operation where projectors can add or remove from the transmission destination list based on real-time needs. This dynamic approach replaces static advance registration, allowing the system to adapt to changing requirements without complex setup procedures.
Solution Approach 2:
The patent enables parameter changes in the transmission destination list at runtime. Projectors can modify their lists dynamically to reflect current operational needs, eliminating the need for advance registration while maintaining efficient data distribution.
Data Source
AI summary
An image transfer method for transferring image data to a plurality of projectors from an image supply unit, wherein the image supply unit generates a transmission destination information list showing a transmission destination of the image data and transmits the image data and the transmission destination information list to a transmission destination projector of the image data, the transmission destination projector determined based on the transmission destination information list, and the projector receives the image data and the transmission destination information list from the image supply unit or another projector and transfers the image data to the plurality of projectors by repeating the process for transmitting the image data to one projector which has not received the image data, the one projector determined based on the transmission destination information list.