Data Communication Device for Real-Time Position Visualization
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Solution Overview
Problem
Existing information visualizing systems face challenges in efficiently transmitting and visualizing real-time data changes from a large number of portable terminals, resulting in prolonged communication times and increased communication loads due to the large data volume.
Innovation Solution
A data communication device that extracts and transmits only changed data from previous to current data collections, grouping identical changed data and using data compression methods to reduce transmission volume, thereby decreasing communication loads and enabling real-time visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If map image data with marks representing current positions of portable terminals are generated and transmitted to client terminals, then visualization of real-time position information is achieved, but communication load and data transmission time are excessively large
Solution Approach 1:
The patent extracts only the changed portions of data (difference data) between the current state and the previous state of portable terminal positions. Instead of transmitting complete map image data with all marks, the system identifies and transmits only the differences, such as newly added marks, removed marks, or moved marks, thereby significantly reducing the data transmission volume while maintaining real-time visualization capability.
2Productivity
If complete data from all portable terminals are transmitted to enable real-time visualization, then information completeness is maintained, but communication time is prolonged
Solution Approach 1:
The patent implements periodic data transmission based on time intervals or position change thresholds. The server periodically updates map image data by comparing current portable terminal positions with previous positions and transmits only when changes exceed a predetermined threshold or when a time interval elapses. This periodic action enables real-time visualization while minimizing unnecessary transmissions and reducing overall communication time.
3Quantity of substance
If difference data are transmitted to reduce communication load, then data transmission efficiency is improved, but system complexity increases due to data comparison and management requirements
Solution Approach 1:
The patent introduces a server as an intermediary between portable terminals and client terminals. The server performs the complex tasks of receiving position information from portable terminals, comparing it with previous data, generating difference data, and transmitting the results to client terminals. This intermediary approach centralizes the data comparison and management complexity on the server side, allowing client terminals to remain simple while still benefiting from reduced data transmission volumes.
Data Source
AI summary
There are provided a changed data extracting unit 13 for extracting only changed data to be present data changed from previous data for each of data to be received repetitively from a plurality of portable terminals 200, a block data generating unit 14 for collecting, into one, any of the changed data which are extracted and have the same value, thereby generating block data, and a data transmitting unit 15 for transmitting the generated block data, and only data changed from previous receipt to present receipt in a huge amount of data which are collected from the large number of portable terminals 200 and might be changed moment by moment are extracted as transmitting target data, and furthermore, the changed data having the same value are collected into one and transmitted if any. Consequently, a transmission data volume can be reduced.