Abstract: A switch for an ATM communication system. The ATM communication system has an ATM network on which ATM cells travel, source nodes connected to the ATM network which produce ATM cells and send them onto the ATM network, and destination nodes connected to the ATM network which receive ATM cells from the ATM network. The switch comprises input ports through which cells are received from the ATM network. The switch comprises output ports through which cells are transmitted to the ATM network. The switch comprises a switching mechanism connected to the input ports and output ports which transfer cells from the input ports to output ports. The switching mechanism has a unicast sending mechanism for sending unicast cells to an output port and has a multicast sending mechanism for sending multicast cells to a desired output port. The multicast sending mechanism is separate and different from the unicast sending mechanism.

Abstract: An enclosure for electronic devices includes a frame device for moving at least one electronic device from the interior of the enclosure to a position outside to the enclosure, or a position where the device does not obstruct access to other components. A frame device may be attached to at least one interior surface of the enclosure as well as an electronic device, such that as the frame is moved within enclosure, the electronic device, connected thereto is repositioned as well. The frame may further include an additional hinge device for rotating the electronic device away from the enclosure. With this movement of the electronic device, greater access may be provided to other electronic devices and components contained therein. The enclosure may further include a specially-adapted ground bar for grounding the individual components in the enclosure. Specially marked attachments may be provided such that individual connections are established from each component as well as a connection to an electrical ground.

Abstract: A system and method for establishing a beam forming phase reference line remote from an antenna system is taught. By providing a phase reference line at a selected position in the signal path the present invention allows for a beam forming matrix to be utilized in providing distributed amplification without requiring additional power sharing matrix arrangements. Moreover, disposing of the phase reference line at a selected point in the signal path according to the present invention allows for multi-mode communications wherein both switched beam and adaptive beam forming may be utilized.

Abstract: In a distortion injection path (15) wherein a detected distortion component of a main amplifier (23) becomes amplified, distortion by an auxiliary amplifier (29a) is detected by an auxiliary distortion detector (42) composed of a variable attenuator (27a), a variable phase shifter (28a), a first auxiliary amplifier (29a), a delay line (36) and a phase inverter (37), and the detected distortion is cancelled by an auxiliary distortion canceller (43) composed of a variable attenuator (27b), a variable phase shifter (28a), a second auxiliary amplifier (29b) and a delay line (39), thereby increasing the efficiency of the amplifier.

Abstract: A remote telephone testing device (22) includes a transmitter (30), a receiver (24), a controller (26) and a test circuit (28). In response to the receiver (24) receiving a test signal from a test system (20) via a telephone network (2, 4, 6, 8), the controller (26) communicatively isolates telephone equipment (10) of a subscriber (S) from the telephone network (2, 4, 6, 8) and connects the test circuit (28) to the telephone equipment (10). The test circuit (28) tests the telephone equipment (10) and conveys one or more results of such test to the controller (26) which relays the one or more results to the test system (20) via the transmitter (30). When testing is complete, the telephone equipment (10) is isolated from the test circuit (28) and is communicatively connected to the telephone network (2, 4, 6, 8).

Abstract: This invention provides a CDMA (IS-95) cellular communication system, in which a base station transmits a common broadcast pilot signal through a sector wide beam and traffic signals through narrower adaptive spatial beams by way of an adaptive antenna array. The present invention further provides methods of recovering the phase mismatch between the pilot and traffic signals received at a mobile station, thereby providing for coherent demodulation. By implementing the phase-recovery process at individual mobile stations, the present invention enables the base station to transmit the traffic signals with optimal power gain and minimal interference.

Abstract: A scanning communicator for use with a bar code and an electronic label including at least one optical transceiver and circuitry operative to cause the optical transceiver to scan the bar code while in a bar code scanning mode and communicate with the electronic label while in an electronic label communications mode.

Abstract: A method of displaying information relating to performance of a computer resource over a preselected period of time, wherein the computer resource is connected to a communication network and the method includes the steps of: from a location on the network that is remote from the computer resource, periodically sampling data relating to performance of the resource so as to generate stored values for a preselected performance variable for that resource, wherein the periodic sampling takes place over a preselected period of time and the preselected performance variable takes on values within a specified range of possible values; dividing the specified range of possible values for the preselected performance variable into a plurality of subranges; for each subrange, determining for what proportion of the preselected period, the values of the preselected performance variable fall within that subrange; and for each subrange, displaying in graphical form the proportion of the preselected period of time that the valu

Abstract: A network testing system (50) includes a message compiler (52) accepting a plurality of data inputs (54) to create a test message (56). A communicator (58) is capable of transmitting the test message (56) to a component under test (60). The test message (56) is compliant with any of a plurality of protocols. The communicator (58) is also capable of emulating a communication session using an emulation module.

Abstract: Apparatus and methods for processing RF signals are disclosed. A method according to the invention includes receiving a set of time domain energy samples representing signal energy present in an RF spectrum, transforming the set of time domain energy samples into a set of frequency domain power samples, determining from the set of frequency domain power samples whether a signal of interest is present in the RF spectrum, and forwarding to a follow on system a subset of the set of frequency domain power samples, wherein the subset corresponds to the signal of interest. Transforming the time domain samples can include dividing the set of time domain energy samples into a plurality of N windows, each of which is associated with a predefined window period, and performing an FFT on each said window to generate a set of K frequency bins, wherein each frequency bin has a value based on energy present in a predefined frequency band during the corresponding window period.

Abstract: The feeding mechanism for feeding media from an initial site to a predetermined site comprises a base, a scrubber, a deskewer, two feeders, a lifting device having two cam portions, a driving element and a releasing device. The deskewer is moved between a first position and a second position and sets the media located at the initial site. The two feeders are used for transmitting the media located at the initial site toward the predetermined site. The cam portions are used as a lifter to move the deskewer from the first position to the second position. The driving element disposed between the lifting device and the releasing device generates forces to actuate the cam portions to move the deskewer. The releasing device is used as an overload protection clutch connected between the lifting device and the driving element, having a first plate separately contacting the driving element.

Abstract: A common mode bias voltage generator apparatus and method includes a plurality of MOSFET-based transistors and a plurality of resistors configured and arranged to provide a half of a supply voltage with a predetermined low output impedance while using relatively little power and circuit area.

Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.

Abstract: In the case where received e-mail data can not be printed, e-mail control section 33 transfers the received e-mail data to another information terminal device. And facsimile control section 34 instructs facsimile section 27 to print an error message including sender information and an attached file format. And indication control section 35 starts up indication section 29.

Abstract: In a wireless network provided with a plurality of cell sites having a coverage area and an associated billing zone, a method and system for providing a wireless mobile unit with an indication of which type of billing zone is associated with the cell site servicing the mobile unit includes registering a mobile unit located within the coverage area of a cell site with the cell site. After registration, the billing zone associated with the registered cell site is then determined. An indication is then provided to the mobile unit of the billing zone associated with the registered cell site. The mobile unit then displays a message to notify the user of the mobile unit of the billing zone associated with the cell site in which the mobile unit is registered.

Abstract: Method for processing a statistics data accumulated in a mobile station in a mobile communication system, wherein a base station checks presence of a request for processing the statistics data accumulated in the mobile station, classifies items of the statistics data into groups according to attributes and characteristics when the request presents, and composes a request message for processing the statistics data using the groups, which is transmitted to the mobile station.

Abstract: A technique for implementing in a networked client-server environment, e.g., the Internet, network-distributed advertising in which advertisements are downloaded, from an advertising server to a browser executing at a client computer, in a manner transparent to a user situated at the browser, and subsequently displayed, by that browser on an interstitial basis, in response to a click-stream generated by the user to move from one web page to the next. Specifically, an HTML advertising tag is embedded into a referring web page. This tag contains two components. One component effectively downloads, from an distribution web server and to an extent necessary, and then persistently instantiates an agent at the client browser. This agent “politely” and transparently downloads advertising files, for a given advertisement into browser cache and subsequently plays those media files through the browser on an interstital basis and in response to a user click-stream.

Abstract: A method and apparatus for matching common mode output voltage at a switched-capacitor to continuous-time interface. An active continuous time summation circuit is used at the output of the switched-capacitor stage to derive the common mode level that is at the output of the switched-capacitor stage. This derived signal is filtered to remove any noise component remaining in it, and is then used as the reference common mode signal in the continuous time stage. This forces the output common mode, and hence the input common mode of the unity gain amplifier stage, to track the common mode output of the switched-capacitor stage. This adaptive tracking eliminates the common mode interface error, which could be present and could vary from die to die (due to parasitic variations). This technique ensures proper tracking of the DC levels between the negative and the positive terminals of the unity gain amplifier, which is essential for low distortion operation of the amplifier.

Abstract: A direct flow impingement cooling system for heat generating electronic components is disclosed. The system includes a panel containing the components and the panel is formed of a main housing and a cover housing hinged to move between opened and closed positions. Three fans are positioned downstream of three spiral shaped air intake patterns, each having 18 cone-shaped cutouts. Downstream of the fans is a back plate with three aligned openings and side wall air exhaust slots. Downstream of the slots are upper and side exhaust openings, where all of the openings provide for low impedance air flow such that high heat removal from densely packed components is achieved.