Central Information Display with LVDS interface

A Central Information Display (CID) that has undergone further development is used as the display instrument for the CHAMP. The screen diagonal is still 6.5". The picture signal is now transmitted using a two-wire connection. The resolution has increased to 800 x 480 pixels.

The graphical layout of the user interface has been redesigned. 8 selection menus are now available rather than 3. When one of the selection menus is selected, the text of the selection menu appears in the center of the circle: e.g. MINI Connected The main menu is divided into the following 8 selection menus:

• CD and Multimedia
• Radio
• Telephone
• Navigation
• Office
• MINI Connected
• Vehicle information
• Settings
  Fig 1: Display - Central Information Screen

  Courtesy of BMW OF NORTH AMERICA, INC.

With the CHAMP, the LVDS data line is a two-wire connection. This new LVDS data line has the following advantages:

• Higher data transfer rate
• No difference in the signal propagation delay between the individual lines
• Simpler and lower-cost technology

A four-wire, screened cable is used for the two-wire connection. This solution involves lower costs, even though one of the 4 lines is not used actively.

Fig 2: Central Information Display - Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

To prevent EMC faults, the unused line is also earthed. The capacitive interferences of the signals are diverted to ground. Furthermore, earthed lines form a defined potential and cannot have the same effect as aerials.