There are generally two cases in using car camera with car display, one is the 3.5-or 4.3-inch screen, as long as it has the video signal input, the display will automatically turn on the display board camera images, the other is seven inches or more of the car displays, such displays are generally two-way video input AV1 and AV2, AV2 is usual with the camera, and AV2 have to need a dedicated power line triggered, generally the screen would have connected to switch to AV2 picture to a trigger signal to automatically switch power, just a video signal does not have to automatically switch to AV2, it must be plus a power signal. such as in the use of reversing camera, the trigger signals of AV2 display power have connected to the reversing light power after connecting video cable with display, so that reversing the screen will switch to AV2.
Off-board display is usually the case, after the reverse gear mounted camera will automatically display the picture, Another point to note is that there are some large-size display (10 inches or more of the liquid crystal display, etc.) can not the normal car camera shows the image, because the resolution of the camera will display a minimum resolution of the image does not reveal if switching to 2.4G wireless video transmission to be displayed, because the camera's image through 2.4G wireless video Mediation can be displayed.
Car camera with one car DVD navigation use: generally the case in the boot, but also have a power signal to switch to trigger the camera screen.
Car camera with a portable GPS navigation device: Generally in the boot, automatically switch to the camera's screen as long as the video signal input, no external power supply signal is triggered.
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