Display and control method thereof

Abstract

The invention provides a display and a control method of the display. When an external video signal source is coupled to a video signal connection interface and the external video signal source supplies a vertical synchronization signal to a horizontal synchronization signal connection port, the control end of a first switch is controlled to make the first switch be turned on, and a second resistor is coupled between a low-voltage end and a horizontal synchronization signal route through the first switch so that a first resistor can be connected with the second resistor in parallel. By means of the display and the control method, the display can be compatible with a three-line type external video signal source, a four-line type external video signal source and a five-line type external video signal source only through the single video signal connection interface, and the connection interface of the display is simple.

Description

technical field [0001] The invention discloses a display and its control method, especially a display compatible with both four-wire external video sources and five-wire external video sources and its control method. Background technique [0002] At present, the display is connected to an external video source (such as a video player, camera, industrial equipment or medical equipment, etc.), which can match the type of external video source, through a five-wire (R.G.B.H.V.) connection interface, a four-wire (R.G.B.H+V. ) connection interface or three-wire (R.Gs.B.) connection interface connection. Please refer to figure 1 . figure 1 It is a schematic diagram of a common five-wire connection interface 100 in the prior art. The type of connection interface needs to match different types of signal terminals. figure 1 Take the interface of the BNC (Bayonet Neill–Concelman) terminal as an example. From left to right, the red (R) video signal port 110, the green (G) video sign...

AI Technical Summary

Problems solved by technology

Depend on figure 1 It can be seen that the five-wire connection interface on the display can only be coupled to a five-wire external video source, but cannot integrate three-wire, four-wire and five-wire connection interfaces

In order to enable the display to be connected to a three-wire external video source or a four-wire external video source, according to the prior art, users and manufacturers are forced to use a variety of adapters that are inconvenient to disassemble and assemble. disassembly, or setting multiple connection interfaces on the display, resulting in complex display interface and difficult to reduce the area

This has caused inconvenience to users and is extremely detrimental to product specifications

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