Abstract: A detection system to detect disconnection of a powered device from a link of a power over Ethernet system is disclosed. The detection system can include closed-loop control configured to supply a predetermined test current to an electrically conductive path that includes at least a portion of the link via which the powered device is connectable for receiving power. A detector is configured to monitor the closed-loop control, the loop detector providing a disconnect signal if the closed-loop control is outside of expected operating parameters, thereby indicating that the powered device has been disconnected from the link.

Abstract: A system and method for detecting a broken wire in a communication cable coupling a powered device to power sourcing equipment. Powered Devices (PDs) may be powered by power sourcing equipment via communication cables as in power over Ethernet systems. A current share technique is employed at the Power Sourcing Equipment (PSE) side or the PD side of the Ethernet cable to force currents in twisted pairs of the communication cable to be equal. In one embodiment, first and second power supplies within a PSE are coupled to first and second powered device controllers (PDCs). A characteristic within the system that is indicative of first and second PDC input voltages is measured and the two measured characteristics are compared. If the two measured characteristics are not substantially the same, such indicates the presence of a broken wire.

Abstract: Inter-integrated circuit-capable devices for use on an inter-integrated circuit bus are disclosed. The inter-integrated circuit-capable devices include integrated, internally-configurable addressing registers in place of external pins. Cascaded systems of inter-integrated circuit-capable devices for easier addressing are also disclosed as are methods for writing address identifier codes to addressing registers of the cascaded, inter-integrated circuit-capable devices.

Abstract: Apparatus within power sourcing equipment and a method for determining whether a load within a powered device coupled to the power sourcing equipment via a cable is within an acceptable resistance range. If the load is within the acceptable resistance range, a voltage source is coupled to the load. In one embodiment one recharge interval is employed during which a capacitor is charged based, at least in part, on the voltage drop across the load and one discharge interval is employed during which a capacitor is discharged based, at least in part, on the voltage drop across the load. In a second embodiment, first and second recharge and discharge intervals are employed and prior to initiation of the recharge and discharge intervals, settling time periods are provided.

Abstract: Apparatus within power sourcing equipment and a method for determining whether a load within a powered device coupled to the power sourcing equipment via a cable is within an acceptable resistance range. If the load is within the acceptable resistance range, a voltage source is coupled to the load. In one embodiment one recharge interval is employed during which a capacitor is charged based, at least in part, on the voltage drop across the load and one discharge interval is employed during which a capacitor is discharged based, at least in part, on the voltage drop across the load. In a second embodiment, first and second recharge and discharge intervals are employed and prior to initiation of the recharge and discharge intervals, settling time periods are provided.

Abstract: A system and method for detecting a broken wire in a communication cable coupling a powered device to power sourcing equipment. Powered Devices (PDs) may be powered by power sourcing equipment via communication cables as in power over Ethernet systems. A current share technique is employed at the Power Sourcing Equipment (PSE) side or the PD side of the Ethernet cable to force currents in twisted pairs of the communication cable to be equal. In one embodiment, first and second power supplies within a PSE are coupled to first and second powered device controllers (PDCs). A characteristic within the system that is indicative of first and second PDC input voltages is measured and the two measured characteristics are compared. If the two measured characteristics are not substantially the same, such indicates the presence of a broken wire.

Abstract: Inter-integrated circuit-capable devices for use on an inter-integrated circuit bus are disclosed. The inter-integrated circuit-capable devices include integrated, internally-configurable addressing registers in place of external pins. Cascaded systems of inter-integrated circuit-capable devices for easier addressing are also disclosed as are methods for writing address identifier codes to addressing registers of the cascaded, inter-integrated circuit-capable devices.

Abstract: One embodiment of the present invention includes a communication network comprises a communication cable having a first wire pair and a second wire pair that both extend between a first end and a second end of the communication cable. The network also comprises at least one power source configured to provide a first supply current through the first wire pair and a second supply current through the second wire pair at the first end of the communication cable. The first supply current and the second supply current can be substantially equal. The network also comprises a first diode bridge and a second diode bridge coupled to the second end of the communication cable and configured to combine the first and second supply currents to provide a combined supply current. The network further comprises a powered device configured to receive the combined supply current.

Abstract: A stabilized sighting apparatus comprising a infrared camera sensitive to the thermal infrared rotatably mounted for rotation about an elevation axis on an assembly rotatable on a platform about an azimuth axis. The camera is provided with an inertial system for stabilization about the two axes. The apparatus comprises an optical viewfinder having an aiming mirror mounted on the assembly and rotatable about an axis parallel with the elevation axis by a recopying device and an optical offset means which directs along the azimuth axis, towards the platform, the light beam reflected by the aiming mirror. The infrared camera is traversed by the azimuth axis and the larger part thereof is on the side of the azimuth axis opposed to the side where the mirror is located.

Abstract: A device for reading out the position of a movable member comprising a sc carried by that member and having equidistant coded references. Each reference is different from the others. A stationary optical system forms the image of a portion of the scale on a fixed detector. The detector comprises a linear matrix of photo detectors regularly distributed at predetermined intervals and associated with electronic means which identifies the coded reference whose image is formed on the matrix and reads out the serial number of the photo element on which the leading edge of the coded reference is formed.

Abstract: Technical sector: Incinerator unit of average capacity having a rotary grate for household refuse and industrial waste. Main technical characteristic of the invention: The incinerator is formed of a stationary casing and a metallic rotary grate of frusto-conical configuration made of juxtaposed cylindrical rings of decreasing diameters, formed of plane or curved members which may be modular plates identical for the entire grate. The incinerator has a pre-drying chamber. The ash pit serves as a basis for the entire unit. Main applications of the invention: Basic members of mobile, removable or stationary incinerator units and of incinerator plants for household refuse and industrial waste.