limited to processors the pivoting monitor shaft 32 is coupled to a motor 34 and a brake 36 that is also coupled to the pivoting monitor shaft 32 during deployment as the display unit 10 rotates about a longitudinal axis of the pivoting monitor shaft 32 the sensor wheel 30 located on the pivoting monitor shaft 32 also rotates along the same axis and in the same direction as the pivoting monitor shaft 32 based on information provided from the receiver 24 and or the transceiver 28 the micro controller 26 generates deployment control signals to the motor 34 and brake 36 which subsequently control the movement of the display unit 10 the deployment positions of the monitor 10 may be pre calibrated and stored in memory 40 as discussed in detail in the following sections fig4 a illustrates a rear perspective view of one embodiment of the deployment assembly 20 provided in accordance with the principles of the present invention fig4 b illustrates an enlarged view of the sensor wheel 30 of fig4 a and fig4 c is a cross section of one embodiment of the sensor wheel 30 of fig4 b as shown the sensor wheel 30 has a plurality of calibration marks 30 a 30 b and 30 c each of which is capable of reflecting light emitted from the transceiver 28 in one embodiment the first two calibration marks 30 a and 30 b are narrow calibration marks and.