A clock synchronization adjustment system and its adjustment method
A clock synchronization and adjustment system technology, applied in transmission systems, synchronization devices, digital transmission systems, etc., can solve problems such as the inability to truly experience the flexibility of distributed splicing processing technology systems
Active Publication Date: 2018-05-01
上海寰视网络科技有限公司
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Problems solved by technology
As a result, for the broadcasting industry or large-scale screen output systems, the existing distributed synchronization technology cannot effectively ensure the true synchronization of signal output at all times, making it impossible to truly experience distributed synchronization in these industries. System flexibility enabled by stitching processing technology
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[0035] In order to make the technical content disclosed in this application more detailed and complete, reference may be made to the drawings and the following various specific embodiments of the present invention, and the same symbols in the drawings represent the same or similar components. However, those skilled in the art should understand that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for schematic illustration and are not drawn according to their original scale.
[0036] The specific implementation manners of various aspects of the present invention will be further described in detail below with reference to the accompanying drawings.
[0037] figure 1 A schematic diagram of a topology structure of a clock synchronization adjustment system according to an embodiment of the present invention is shown. figure 2 show figure 1 In the clock synchronization adjustment system of , the schemat...
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The invention provides a clock synchronization adjustment system and an adjustment method thereof. The system includes: a synchronization node, used to provide a synchronization clock signal; and a plurality of independent individual devices, all coupled to the synchronization node, each independent individual device outputs a device clock signal and calibrates a clock frequency interval when powered on. The independent individual device also includes: a receiving module, used to receive a synchronous clock signal; and an adjustment module, used to compare the number of the received synchronous clock signal with the number of its own device clock signal within a preset time, and according to Compare the result to adjust using the endpoint frequency of the clock frequency interval as the current device clock frequency. Compared with the prior art, the present invention selects a synchronous clock signal as the reference clock standard, so that independent individual devices with different working clocks are consistent with the reference clock, and then each independent individual device is in step when completing the same event .
Description
technical field [0001] The invention relates to the field of distributed image mosaic control, in particular to a clock synchronization adjustment system and an adjustment method used for multiple independent individual devices. Background technique [0002] At present, splicing controllers are widely used in command centers in various industries in cooperation with various display devices. These display devices can be such as LCD (Liquid Crystal Display, liquid crystal display), DLP (Digital Light Processing, digital light processing), PDP (Plasma Display Panel, plasma display panel), LED (Light Emitting Diode, light emitting diode) and the like. With the continuous expansion of application scale, a distributed image stitching processing system based on network switching architecture that can break through geographical restrictions has emerged. Because the system abandons the traditional PCI bus structure and Fabric Switch structure, and introduces network switching techno...
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IPC IPC(8): H04L7/00
Inventor 陈黎平黄亚辉师丽丽
Owner 上海寰视网络科技有限公司