Video optical module encyclopedia
With the rapid development of high-capacity HD and UHD digital broadcast video, the quality of video transmission is more and more demanding. In order to ensure the good effect of video transmission, video optical module emerges as The Times require.
Introduction to video optical module
Video optical module, also known as digital video optical module or SDI optical module is used to support SDI equipment SDI video pathology signal, dedicated to HD SDI optical terminal. The video optical module has the advantages of small size and hot plug support. SDI is the SMPTE organization's custom digital video interface standard.
The present situation of video optical module
At present, due to the immature design of most of the video optical modules, they cannot pass the SDI pathological code test, resulting in the problem of irregular bit-rate signal transmission. For example, 3G video optical modules are prone to black screen, flash screen or the picture is not smooth during HD video transmission.
Application of video optical module
1. Television studio;
2. HD shooting, such as animal shooting, film shooting;
3. Live broadcast of large-scale sports events;
4. HD digital broadcasting;
5.1080 PHD monitoring field.
The difference between video optical module and ordinary optical module
Video optical module with ordinary optical module function are the same, is used for receiving and transmitting optical signal optical module, the difference is the different application environment, modules are used for video transmission, video light and SDI optical transceiver collocation is used, and ordinary optical modules are used for the transmission of data communication, used with collocation such as switches, fiber optic transceivers. In addition, the two modes of transmission are also slightly different. Data transmission is bidirectional, while video transmission is unidirectional. There is only one video transmission link, which can only carry out optical or electrical signal transmission.
