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Distributed method for displaying vector data, device and system thereof

A distributed display and vector data technology, applied in the direction of digital output to display devices, etc., can solve the problems of large data volume at the display end, large network load, and affecting display synchronization, so as to improve display efficiency, reduce network load, and reduce data. volume effect

Inactive Publication Date: 2012-10-31
南通卓效自动化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this solution, since the image server sends all the vector data to each display terminal, the amount of data sent is large, so the requirement for network bandwidth is relatively high. When the number of display terminals is relatively large, the network load will be very large ;At the same time, because each display terminal needs to draw all the vector data, when the amount of vector data is very large, the amount of data that needs to be drawn by each display terminal is very large, and the efficiency is significantly reduced, resulting in a significant delay and affecting display synchronization.

Method used

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  • Distributed method for displaying vector data, device and system thereof
  • Distributed method for displaying vector data, device and system thereof
  • Distributed method for displaying vector data, device and system thereof

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Embodiment 1

[0046] Such as figure 2 As shown, it is a schematic structural diagram of Embodiment 1 of the device for distributed displaying vector data of the present invention, which includes:

[0047] A data receiving unit, configured to receive drawing instructions and vector data packets;

[0048] The coordinate conversion unit is used to calculate the screen coordinate range displayed by each display terminal according to the position of each display terminal in the entire splicing wall, and perform coordinate conversion to convert the screen coordinate range displayed by each display terminal into the corresponding actual geographical coordinate range ;

[0049] The spatial screening unit is used to unpack the vector data package, and perform spatial relationship screening according to the geographical coordinate range to be displayed on each display terminal, and filter out the vector data to be displayed on each display terminal;

[0050] The data sending unit is used to packag...

Embodiment 2

[0057] Such as image 3 As shown, it is a schematic structural diagram of Embodiment 2 of the device for distributed displaying vector data of the present invention. In this embodiment, the spatial screening unit in the above-mentioned Embodiment 1 is further limited, and the spatial screening unit specifically includes:

[0058] an unpacking unit, configured to unpack the vector data packet;

[0059] The screening unit is used to perform spatial relationship screening according to the range of geographic coordinates to be displayed on each display terminal, and filter out the vector data to be displayed on each display terminal.

[0060] At this time, after the screening unit screens out the vector data to be displayed on each display terminal, the data sending unit can obtain the vector data to be displayed on each display terminal from the screening unit, and pack the vector data to be displayed on each display terminal respectively before sending Display to the correspond...

Embodiment 3

[0063] Such as Figure 4 As shown, it is a schematic structural diagram of Embodiment 3 of the device for distributed displaying vector data of the present invention. In this embodiment, compared with the solution in Embodiment 2, a specific spatial screening method is used to control the The spatial screening unit is further defined.

[0064] Such as Figure 4 As shown, the spatial screening unit in this embodiment also includes:

[0065] a management handle generating unit, configured to generate a corresponding management handle for each vector data;

[0066] The vector data linked list unit is used to generate corresponding vector data linked lists for each display terminal respectively;

[0067] At this time, the screening unit, when judging that the vector data is the vector data to be displayed on the display terminal, adds the management handle and the coordinate value of the vector data to the vector data linked list corresponding to the display terminal. At this t...

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Abstract

The invention provides a distributed method for displaying vector data, a device and a system of the distributed method. The method comprises the steps of: receiving a drawing order and a vector data packet; computing a screen coordinate range displayed by each display end according to the position of each display end in a whole splice wall, and converting the screen coordinate range displayed byeach display end into a corresponding practical geographic coordinate range; unpacking the vector data packet, performing space relationship screening according to the geographic coordinate range displayed by each display end, and screening the vector data which needs to be displayed by each display end; and respectively packing the vector data which needs to be displayed by each display end, andtransmitting the vector data to the corresponding display end to be drawn and displayed. Due to the scheme of the invention, only the vector data which needs to be displayed by the display end is transmitted to each display end, and only the vector data which needs to be displayed by the display end is drawn and displayed by each display end, so that the date quantity transmitted by a network is furthest reduced, the date quantity which needs to be processed by each display end is greatly reduced, and the display efficiency of vector graphics is improved.

Description

technical field [0001] The invention relates to the technical field of image display, in particular to a method, device and system for distributed display of vector data. Background technique [0002] When displaying a map in the prior art, especially when displaying a map on a mosaic wall, in order to display the map efficiently, the map is usually preprocessed to generate several pictures of the same size according to different scales, and then use The distributed display mode is displayed on the splicing wall, so that each display end of the splicing wall only displays a corresponding part of the map. For the vector data that needs to be displayed on the splicing wall in real time, since the vector data cannot be cut directly by the above method, all the vector data is sent to each display terminal through the image server, and then each display terminal separately Draw all the vector data so that the vector data can be displayed correctly across display terminals. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14
Inventor 徐鹏
Owner 南通卓效自动化有限公司