Abstract: Novel system and protocol for controlling a sequence of events. The sequencing system has a master circuit for providing sequencing information defining a sequence of events using a sequencing signal, and at least one slave circuit responsive to the sequencing signal for producing at least one event signal defining an event. The master and slave circuits are configured for providing a bidirectional transfer of the sequencing information via a single wire.

Abstract: A gooseneck hinge assembly for a closure of a vehicle includes a body side strap adapted to be connected to a vehicle body of the vehicle and a closure side strap having a gooseneck shape adapted to be connected to a closure for closing an opening in the vehicle body. The gooseneck hinge assembly also includes a pivot pin pivotally connecting the closure side strap and the body side strap to allow rotational movement therebetween. The gooseneck hinge assembly further includes a wedge bumper interconnecting the body side strap and the closure side strap to allow the decklid to free rise to a fully open position and to dampen an impact of the closure side strap.

Abstract: A Power over Ethernet (PoE) system having a Power Sourcing Equipment (PSE) and a Powered Device (PD) configured for interacting over four pairs of wire provided for supplying power from the PSE to the PD. The PSE and the PD are configured to perform separate PD classification procedures over first and second 2-pair sets to support PoE operations that are not defined by the IEEE 802.3af standard.

Abstract: Novel circuitry and methodology for detecting a Powered Device (PD) in a system for providing power to the PD. PD detection circuitry detects the PD in a first mode by providing detection current to probe the PD, and in a second mode by providing detection voltage to probe the PD. A control circuit determines that the PD is a valid device if the PD is detected both in the first mode and in the second mode.

Abstract: A power supply system for providing power over a communication link has current limit circuitry for restricting an output current of the system based on a current limit threshold, and threshold circuitry for setting the current limit threshold in accordance with an output parameter of the system. In particular, the threshold circuitry may control the current limit threshold in accordance with an output voltage of the system so as to achieve a substantially constant output power of the system.

Abstract: A system for supplying power to a load over a communication link has high-side current sensing circuitry for measuring a high-side current value, low-side current sensing circuitry for measuring a low-side current value, and control circuitry responsive to both the high-side current value and the low-side current value to detect a fault condition, detect information from the load, and/or transmit information to the load by creating a prescribed unbalance between the high-side current and the low-side current.

Abstract: Novel system and methodology for distinguishing a Network Interface Card (NIC) from a short circuit condition in a Power over Ethernet (PoE) system. A system for providing power to a powered device (PD) includes a PD probing circuit that generates a detection signal supplied to a device being probed and determines a response signal produced in response to the detection signal, and a control circuit that determines a detection value based on the response signal. The control circuit detects a short circuit if the detection value is in a first predetermined range, and detects a NIC if the detection value is in a second predetermined range outside of the first predetermined range.

Abstract: A novel system and methodology for controlling an output of Power Sourcing Equipment in a Power over Ethernet system based on a current limit threshold. The PSE has an auto-zero circuit for comparing a monitored output current of the PSE with the current limit threshold to control the output of the PSE.

Abstract: Novel system and methodology for adjusting a current limit threshold in a Power over Ethernet (PoE) system in accordance with requirements of a Powered Device (PD). A system for supplying power to a PD over a communications link has a requirement determining circuit for determining a PD's requirement, and a control circuit for setting a parameter restricting an output signal of the PSE in accordance with the determined PD's requirement. The control circuit may set a current limit threshold of the PSE and/or the PD in accordance with the determined PD's requirement, such as a power requirement.

Abstract: Novel system and methodology for detecting a Powered Device (PD) in a Power over Ethernet (PoE) system. A PD probing circuit generates a detection signal supplied to the PD and determines a PD response signal produced in response to the detection signal. Based on the PD response signal, the control circuit determines a detection value for identifying the PD. In particular, the control circuit concludes that the PD is a device satisfying a PoE standard if the detection value is in a first predetermined range, and concludes that the PD is a legacy PD device if the detection value is in a second predetermined range outside of the first predetermined range.

Abstract: A novel system for providing power over the Ethernet includes a current limit circuit for preventing an output current from exceeding a current threshold set at a prescribed level, and a foldback circuit for reducing the current threshold when an output voltage is lower than a prescribed voltage value. The foldback circuit may be controlled to operate in a high-power mode to increase the current threshold above the prescribed level.