LVDS Technology
The transmission of picture data from the CCC to the CID was performed by means of an
8-wire LVDS (low voltage differential signaling) line. With the introduction of the Car
Information Computer, the video signal is now transmitted through a 2-wire LVDS line.
The change in picture data transmission in the vehicle reflect the changes made in PC
technology. While the printer was formerly connected to the PC via a parallel cable, data
transmission now takes place using serial USB technology.
In the following graphics, 8-wire LVDS technology is compared to the new 2-wire
LVDS technology:
8-wire LVDS
Transmission of video signals via
8-wire LVDS technology with CCC
and CID.
(LVDS+ and LVDS- for each of the
four signal lines and an additional
synchronization line)
2-wire LVDS
Transmission of video signals via
2-wire LVDS technology with CIC
and CID.
Signal transmission through this 2-wire LVDS line offers four distinct advantages:
• Higher data transfer rate
• Simplified wiring
• Runtime differences between the individual lines are avoided
• Serial 2-wire LVDS data transmission is now much more
cost-effective than 8-wire LVDS technology
The main advantage of using serial 2-wire LVDS is the resulting high picture resolution.
55
F01 Audio Systems
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