Multimedia signal transmission system, switching device and transmission method
A signal transmission system and signal switching technology, which is applied to the components of the TV system, image communication, TV, etc., and can solve problems such as single interface, signal interference, and expansion restrictions
Active Publication Date: 2016-12-28
ATEN INT CO
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[0003] However, since the traditional matrix switching device is implemented in a parallel manner, when the number of output ports and input ports continues to increase, the traces on the circuit board will intersect with each other, resulting in signal interference. very serious
In addition, most of the digital image interfaces currently on the market use serial methods to transmit data, such as High Definition Multimedia Interface (HDMI), Digital Visual Interface (DVI), DisplayPort (DisplayPort) and serial Digital interface (Serial Digital Interface, SDI), etc., and most of the general audio-visual matrix switching devices can only use a switcher (Crosspoint) for switching for one of the transmission interfaces, which is only suitable for the application of a single interface, and has a certain potential for future expansion. limit
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[0055] A preferred embodiment of the present invention is a multimedia signal transmission system. In this embodiment, the multimedia signal transmission system is used for transmitting multimedia signals. Please refer to figure 1 , figure 1 A schematic diagram of the multimedia signal transmission system of this embodiment is shown.
[0056] Such as figure 1 As shown, the multimedia signal transmission system 1 includes a signal switching device 10 , a source terminal 11 , a receiver terminal 12 and a control module 14 . In fact, the output and input interfaces of the signal switching device 10 may be Low-Voltage Differential Signaling (LVDS) interfaces or Serial / Deserialization (SerDes) interfaces, but not limited thereto. If the signal switching device 10 adopts a Field Programmable Gate Array (FPGA), for example, more processing can be performed on the multimedia signal, such as On-Screen Display (OSD) or color adjustment. Wherein, the source terminal 11 is coupled to...
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A multimedia signal transmission system comprises a source terminal and a signal switching device. The source terminal comprises multimedia signals of source data signals and data clock signals, converts the source data signals into first serial differential signals, and outputs the first serial differential signals and the data clock signals in different paths. Each first serial differential signal is output at a fixed rate. The signal switching device converts the first serial differential signal into parallel switching signals and switches the parallel switching signals and the data clock signals. The signal switching device converts the parallel switching signals into second serial differential signals and outputs the data clock signals and the second serial differential signals. Each second serial differential signal is output at a fixed rate.
Description
technical field [0001] The invention relates to the transmission of multimedia signals, in particular to a multimedia signal transmission system adopting high-speed serial transmission, a multimedia signal switching device and a multimedia signal transmission method. Background technique [0002] In recent years, due to the rapid development of multimedia audio-visual technology, various types of multimedia signal transmission systems have appeared on the market. Among them, some multimedia signal transmission systems use a matrix (Matrix) switching device to transmit multimedia signals between multiple input ports and multiple output ports. [0003] However, since the traditional matrix switching device is implemented in a parallel manner, when the number of output ports and input ports continues to increase, the traces on the circuit board will intersect with each other, resulting in signal interference. very serious. In addition, most of the digital image interfaces cur...
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IPC IPC(8): H04N21/238H04N21/438H04N21/44H04N5/268
Inventor 张勇毅
Owner ATEN INT CO