Abstract: A sound generation system for a vehicle includes a sound generator for operating a speaker of the vehicle to produce an audible sound. A controller detects a vehicle operation event and controls the sound generator to generate an audible indication of the event, an association of the audible indication with the event being programmable by a user.

Abstract: A powering arrangement for use with reverse power feeding arranged to detect an improperly connected POTS phone going off-hook by: measuring a first current flow from a power sourcing equipment; identifying a rapid first increase in current flow from the measured first current flow, the rapid increase defined as a rate of change greater than a predetermined minimum rate of change; identifying a second increase in current flow from the measured first current flow, the identified second increase greater than a predetermined minimum amount; confirming that the identified second increase in current flow is maintained for at least a predetermined amount of time beginning with the identified first increase in current flow; and outputting an error signal to the power sourcing equipment in the event of the identified condition.

Abstract: A power supply unit includes a plurality of the interface ports and a plurality of power delivery units, each coupled to one of the interface ports and configured to extract power from data signals communicated over the interface ports by remote devices. A sharing circuit is coupled to each of the power delivery units for generating a power supply voltage from the power extracted from the data signals. A controller is configured to generate a communication line power loss estimate for each of the interface ports and configure the power delivery units to balance amounts of power supplied by each of the remote devices based on the communication line power loss estimates.

Abstract: A powering arrangement for use with reverse power feeding arranged to detect an improperly connected POTS phone going off-hook by: measuring a first current flow from a power sourcing equipment; identifying a rapid first increase in current flow from the measured first current flow, the rapid increase defined as a rate of change greater than a predetermined minimum rate of change; identifying a second increase in current flow from the measured first current flow, the identified second increase greater than a predetermined minimum amount; confirming that the identified second increase in current flow is maintained for at least a predetermined amount of time beginning with the identified first increase in current flow; and outputting an error signal to the power sourcing equipment in the event of the identified condition.

Abstract: A power supply unit includes a plurality of the interface ports and a plurality of power delivery units, each coupled to one of the interface ports and configured to extract power from data signals communicated over the interface ports by remote devices. A sharing circuit is coupled to each of the power delivery units for generating a power supply voltage from the power extracted from the data signals. A controller is configured to generate a communication line power loss estimate for each of the interface ports and configure the power delivery units to balance amounts of power supplied by each of the remote devices based on the communication line power loss estimates.

Abstract: A sound generation system for a vehicle includes a sound generator for operating a speaker of the vehicle to produce an audible sound. A controller detects a vehicle operation event and controls the sound generator to generate an audible indication of the event, an association of the audible indication with the event being programmable by a user.