Abstract: A ventilation system for a passenger transit vehicle that comprises a passenger compartment. The ventilation system comprises a variable speed fan for providing outside air to the passenger compartment, wherein within a given ambient temperature range, the speed of the variable speed fan is controlled such that the air speed produced by the variable speed fan increases with increasing ambient temperature. The ventilation system further comprises a duct system fluidly connecting the variable speed fan to an air diffuser that directs the air from the variable speed fan towards the passengers within the passenger compartment. The cross sectional area of the duct system decreases along its length for providing substantially constant air pressure along its length. The ventilation system is able to provide outside air into the passenger compartment at an air flow speed of greater than 0.15 m/s.

Abstract: A ventilation system for a passenger transit vehicle that comprises a passenger compartment. The ventilation system comprises a variable speed fan for providing outside air to the passenger compartment, wherein within a given ambient temperature range, the speed of the variable speed fan is controlled such that the air speed produced by the variable speed fan increases with increasing ambient temperature. The ventilation system further comprises a duct system fluidly connecting the variable speed fan to an air diffuser that directs the air from the variable speed fan towards the passengers within the passenger compartment. The cross sectional area of the duct system decreases along its length for providing substantially constant air pressure along its length. The ventilation system is able to provide outside air into the passenger compartment at an air flow speed of greater than 0.15 m/s.

Abstract: According to a first aspect of the invention, there is provided a method for displaying at least one video signal on at least one display, the method comprising selecting at least one video signal to be displayed on the at least one display, providing, for each of the at least one selected video signal, at least one respective final display resolution and at least one respective target position on the at least one display, in at least one input unit, receiving a corresponding one of the selected at least one video signal, pre-scaling each of the corresponding one of the selected at least one video signal according to at least one respective intermediate display resolution compatible with said at least one respective final display resolution, in at least one output unit, post-scaling at least one pre-scaled video signal to obtain at least one post-scaled video signal at said at least one respective final display resolution, the selecting and pre-scaling enabling optimization of a bandwidth between the at least