Abstract: An apparatus may comprise a code output device and a processor configured to detect a first apparatus condition indication, generate a first dynamic identifier code representative of a first apparatus condition in response to detecting the first apparatus condition indication, output the first dynamic identifier code to the code output device, detect a second apparatus condition indication, generate a second dynamic identifier code representative of a second apparatus condition in response to detecting the second apparatus condition indication, wherein the second dynamic identifier code is different than the first dynamic identifier code, and output the second dynamic identifier code to the code output device. Associated methods, computer program products, and systems are also provided.

Abstract: A multi-service access platform may have network interface cards and application cards. The network interface cards may interface the multi-service access platform to an ingress network and an egress network. The network interface cards may be coupled to the application cards by a network distribution bus. As a result, the application cards may perform digital signal processing on signals received from the ingress network. Additionally, the application cards may be coupled to a packet switching fabric. The packet switching fabric may facilitate exchange of signals between the application cards. Additionally, the packet switching fabric may permit exchange of the signals with the egress network.

Abstract: A method and apparatus for reinitializing a galvanically isolated bus by clearing the bus when it is locked up. The reinitialization circuit monitors the state of the bus and recognizes when the bus is locked up in an artificial active state by timing the duration of this state. When the bus has been in an active state beyond a specified threshold time, the reinitialization circuit drives a selected set of bus lines to an idle or ground state. In another embodiment, a comparator detects any desynchronized condition across the bus interface. In one representative embodiment, the circuit may be incorporated into a bus connecting a link layer device to a physical layer device that is in communication with an IEEE 1394 interface.

Abstract: A method and apparatus of powering components on a network by using a load-share technique and by using over-voltage and current-limiting circuitry. The power subsystem for a component in a network is designed in a load-share manner whereby the power subsystem will supply power to the network bus and to the component load. Under normal operation of the power subsystem, the load will be powered directly from the power subsystem. In the event of a failure, the load will immediately pull power from the bus and thereby maintain network operation. The power subsystem and the power supply are protected from disruptions due to voltage or current surges. Further, the power subsystem is in compliance with the IEEE 1394 specifications in terms of recommended current levels and galvanic isolation of the power sources.

Abstract: A method and apparatus for reinitializing a galvanically isolated bus by clearing the bus when it is locked up. The reinitialization circuit monitors the state of the bus and recognizes when the bus is locked up in an artificial active state by timing the duration of this state. When the bus has been in an active state beyond a specified threshold time, the reinitialization circuit drives a selected set of bus lines to an idle or ground state. In one representative embodiment, the circuit may be incorporated into a bus connecting a link layer device to a physical layer device that is in communication with an IEEE 1394 interface.

Abstract: A method and apparatus of powering components on a network by using a load-share technique and by using over-voltage and current-limiting circuitry. The power subsystem for a component in a network is designed in a load-share manner whereby the power subsystem will supply power to the network bus and to the component load. Under normal operation of the power subsystem, the load will be powered directly from the power subsystem. In the event of a failure, the load will immediately pull power from the bus and thereby maintain network operation. The power subsystem and the power supply are protected from disruptions due to voltage or current surges. Further, the power subsystem is in compliance with the IEEE 1394 specifications in terms of recommended current levels and galvanic isolation of the power sources.

Abstract: A self-regulating Class E/resonant power converter includes a power switching device which is gated on at each transition between negative and positive half cycles of the load current by drive signals generated by a drive circuit, the rate at which the drive signals are generated being controlled by a zero crossing detector which monitors the load current and adjusts the frequency of the drive signals in correspondence with changes in the time between successive negative-to-positive zero crossings of the load current such that the power switching device continues to be switched on at substantially zero voltge, zero slope conditions to maintain the power converter operating at the optimal Class E frequency.