Abstract:
A method is described that involves performing the following between first and second appliance networks: receiving a packet from the first appliance network; removing header information for the first appliance network from the packet; and, sending the packet's payload into the second appliance network without having appended any header information for the second appliance network to the payload. Another method is described that involves performing the following with a network interface to a first appliance network: receiving a first command through an API for the first appliance network where the command identifies an appliance and an action to be taken by the appliance; translating the first command into a second command that identifies the appliance and the action to be taken by the appliance, where the second command is in a format for a second appliance network that is a different type of appliance network than the first appliance network; and, constructing a packet having header information formatted for the first appliance network and a payload containing the second command.
Abstract:
A system for interfacing a host computer to a Controller Area Network (CAN) bus. The system comprises a memory, an embedded processor and interface logic. The memory stores program code. The embedded processor couples to the memory and executes the program code. The interface logic interfaces the embedded processor with an interconnecting bus, e.g., the Real-Time System Integration (RTSI) bus. In response to execution of the program code, the embedded processor is operable to perform a CAN event in response to the interface logic receiving a RTSI trigger signal on a selected line of the RTSI bus. A peripheral device also coupled to the host computer assert the trigger signal in response to the peripheral device receiving and/or transmitting data. Furthermore, the interface logic is configured to assert a RTSI trigger signal on a selected line of said RTSI bus in response to the embedded processor performing a CAN event. CAN events include transmission/reception of a CAN frame. The peripheral device may be configured to perform a data transfer in response to receiving the trigger signal.
Abstract:
A subscriber loop tester for testing local loops of telephone switching networks has a partitioned "U" interface and an internal bus architecture for converting various transceiver circuit output data formats to a common data format. The "U" interface has a high impedance transformer meeting bandwidth and line matching requirements for different line codes and protocols for ISDN telecommunication systems. The transformer is selectively coupled to option cards each containing circuitry having AC and DC terminations matching specific line codes and protocols for ISDN telecommunications systems and other types of telecommunications systems. The option cards further contain programmable attenuators for producing a proper nominal signal level as a function of the specific line code and protocol and providing variable insertion loss. A high speed bus is selectively coupled to the option cards for coupling the formatted transceiver circuit output data between the cards and a digital bus translator. The digital bus translator selectively configures the high speed bus for the transceiver output data format of the selected option card and converts the formatted output data received on the high speed bus to a common data format. Multiple source and destination audio paths in the subscriber loop tester are controlled by an audio switching matrix.
Abstract:
Maleic anhydride is produced by the oxidation of a non-aromatic hydrocarbon having at least four carbon atoms in a straight chain with molecular oxygen or a molecular oxygen-containing gas in the vapor phase in the presence of a phosphorus-vanadium mixed oxide oxidation catalyst. Such catalysts are prepared by introducing a substantially pentavalent vanadium-containing compound and a pentavalent phosphorus-containing compound into an alcohol medium capable of reducing the vanadium to a valence state less than +5 in the presence of an alcohol-modifying agent to form a phosphorus-vanadium mixed oxide catalyst precursor. The catalyst precursor is recovered, dried, formed into desired structures, and calcined at temperatures from about 250.degree. C. to about 600.degree. C. The catalysts are highly effective in that they exhibit a weight/weight productivity of at least 70 grams of maleic anhydride per kilogram of catalyst per hour.
Abstract:
Provisions are taken to counter nitrogen oxide fumes produced in catalyst preparation involving metal nitrate decomposition, as by including urea or another scavenger, or by delaying calcining until used as catalyst in treating auto exhaust.
Abstract:
A method is described that involves performing the following between first and second appliance networks: receiving a packet from the first appliance network; removing header information for the first appliance network from the packet; and, sending the packet's payload into the second appliance network without having appended any header information for the second appliance network to the payload. Another method is described that involves performing the following with a network interface to a first appliance network: receiving a first command through an API for the first appliance network where the command identifies an appliance and an action to be taken by the appliance; translating the first command into a second command that identifies the appliance and the action to be taken by the appliance, where the second command is in a format for a second appliance network that is a different type of appliance network than the first appliance network; and, constructing a packet having header information formatted for the first appliance network and a payload containing the second command.
Abstract:
Accessing a private network includes receiving a request from a device across a public network at a first network component to establish a connection between the device and a private network and determining if the device is authorized to connect with the private network. If the device is authorized, the request is forwarded from the first network component to a second network component and the second network component creates a temporary connection between the private network and the device via the first network component.
Abstract:
An apparatus includes a housing having a first side and a second side, and a plurality of Registered Jack (RJ) plugs attached to the first side. A plurality of RJ jacks is also included in the device. The RJ jacks are disposed within the second side of the housing. Each RJ jack is electrically connected to a corresponding one of the plurality of RJ plugs on the first side of the housing. The apparatus also includes a securing mechanism associated with at least one of the plurality of plugs. The securing mechanism is operable to releasably connect the plurality of plugs to a second plurality of RJ jacks on the device, thereby facilitating insertion of the plurality of plugs into the second plurality of jacks.
Abstract:
A method for distributing and maintaining network presence information is presented. According to an embodiment of the present invention, a user logs onto the Internet and transmits to an Internet Presence Information Server (IPIS) his/her presence information, a list of peers (individual network users) whose network presence are of interest to the user, and a request for a list of peers interested in the user's network presence. The IPIS then responds to the user with both a list including the last known Internet Protocol (IP) address for each peer the user is interested in and a list of peers interested in the user's Internet presence. No further communication between the user and IPIS is required after the IPIS responds to the user with these two lists. The user then attempts to directly contact the peers on the first list received from the IPIS by confirming and authenticating the received IP addresses. According to policy, the user directly contacts the peers on the second list received from the IPIS to inform those peers the user is currently signed on-line. Finally, the user periodically “pings” (directly contacts) the confirmed and authenticated IP addresses from the first list received from the IPIS to determine when those peers sign off-line.
Abstract:
Phosphorus-vanadium mixed oxide oxidation catalysts are prepared by introducing a substantially pentavalent vanadium-containing compound and a pentavalent phosphorus-containing compound into an alcohol medium capable of reducing the vanadium to a valence state less than +5 in the presence of an alcohol-modifying agent to form a phosphorus-vanadium mixed oxide catalyst precursor. The catalyst precursor is recovered, dried, formed into desired structures, and calcined at temperatures from about 250.degree. C. to about 600.degree. C. The catalysts are highly effective in that they exhibit a weight/weight productivity of at least 70 grams of maleic anhydride per kilogram of catalyst per hour.