Patents Assigned to ADC
  • Circuits and methods for testing POTS service
    Patent number: 6618469
    Abstract: Circuits for testing POTS service on a shared POTS/xDSL carrier include microfilters for selective coupling to the subscriber loop side of an xDSL filter associated with a subscriber line interface circuit. Such configurations facilitate testing of the POTS service using an insertion point that is between the xDSL filter and the subscriber loop in a manner that is transparent to subscribers.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: September 9, 2003
    Assignee: ADC DSL Systems, Inc.
    Inventors: Jie Dong Wang, Christopher S. Smith
  • Card edge contact including compliant end
    Patent number: 6616459
    Abstract: An electrical terminal is adapted for insertion into a through hole of a circuit board and includes a first section that receives an electrical contact. The first section includes first and second spring arms proximate to each other at a contact point and configured to exert a first spring force to retain the electrical contact. The electrical terminal also includes a second section adapted for insertion into the through hole of the circuit board. The second section includes first and second pin members proximate to each other and defining first and second slots configured to exert a second spring force to retain the electrical terminal in the through hole of the circuit board. The second spring force is exerted in a direction perpendicular to the first spring force.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: September 9, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventor: Jeffrey J. Norris
  • Cable exit trough with cover
    Publication number: 20030165316
    Abstract: A cable exit trough with pivoting cover. The cover having a cover plate and a pivot plate hingedly mounted thereto for easy access to the trough. The exit trough may define an insert aperture for receiving modular cable management inserts. The modular insert providing an additional cable management device such as a curved guidewall. The cable management device may alternatively be fixed to the cable exit trough. Removable snap-mounted flanges may also be included in the exit trough.
    Type: Application
    Filed: February 6, 2003
    Publication date: September 4, 2003
    Applicant: ADC Telecommunications, Inc.
    Inventors: Wayne Johnson, Brian L. Johnson, Thomas W. Kampf, Alex Watts, Michael J. Wentworth
  • Cable management panel with sliding drawer
    Publication number: 20030165315
    Abstract: An optical fiber cable management panel is provided with slideable drawers and structure within the drawers for cable management and/or connection to other devices. Tray inserts drop into the drawers to provide the appropriate management and connection devices. A movable take-up mechanism manages the cable entering and exiting the drawers at side openings. Stackable pivoting storage trays on the tray insert include a detent arrangement for holding each tray in a pivoted access position. The tray inserts further include a front key, and a back tab mounting arrangement for mounting the tray inserts to the drawers, and side radius limiters including notches for extending over raised portions of the drawer. The take-up mechanism includes a U-shaped trough section and cable retention tabs. A control mechanism is provided for controlling movement of the take-up mechanism relative to the drawer.
    Type: Application
    Filed: November 26, 2002
    Publication date: September 4, 2003
    Applicant: ADC Telecommunications, Inc.
    Inventors: Steven P. Trebesch, Thomas C. Tinucci, Joel B. Douglas, John C. Holman, Trevor D. Smith, Paul C. Lance
  • Method and system for limiting in rush current of a power supply filter
    Patent number: 6614668
    Abstract: A power supply is filtered while the amount of in-rush current required by the capacitive charging of the filter is limited. A resistor may be placed in parallel with a relay where the parallel combination is in series with the filtering capacitor. The relay is open upon applying power to the filter and remains open while the capacitor at least partially charges to cause charging current to pass through the resistor and thereby limit in-rush current. The relay is closed thereafter to provide a short circuit around the resistor and thereby unrestrict filtering by the capacitor. Alternatively, a common mode choke is disposed between a capacitor across input nodes and a capacitor across output nodes, whereby the size of the capacitors may be reduced to limit the in-rush current due to the common mode choke. The power supply filter may be included as part of a power distribution panel.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 2, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Joseph Coffey, Delfino Hernandez
  • Cable management bracket for a telecommunications rack
    Patent number: 6614665
    Abstract: A cable management bracket for a telecommunications rack. The bracket includes an elongated member having a length sized to extend across a width of the rack. A plurality of fingers project outwardly from the elongated member. The fingers are spaced apart along the length of the elongated member. Gaps sized to receive telecommunications cables are positioned between the fingers. Bend radius limiters are preferably connected to the fingers to prevent cables passing through the gaps from being bent beyond predetermined bend radius requirements.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: September 2, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Amy J. Witty, Todd Michael Bade
  • Telecommunications cable storage spool
    Patent number: 6612515
    Abstract: A ribbon cable storage spool, tray and method of use. The spool comprising a center post and a plurality of radially extending top and bottom fins. The spool may also comprise a guide wall, a ribbon retention tab, a channel wall defining a channel and a ledge, and an oblong shape. The tray comprising a bottom plate and a sidewall which act together to define a spool chamber for receiving the spool. The bottom plate may also define holes such that the bottom fins of the spool are coplanar with the bottom plate when the spool is placed in the tray. The bottom plate may also include a column to be received by the channel of the spool. The channel and column may include a tongue and groove arrangement for preventing rotation of the spool relative to the tray. The column may also include a flexible clip for retaining the spool in the tray.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: September 2, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Thomas C. Tinucci, John C. Holman, Trevor D. Smith
  • Distributed automatic gain control system
    Publication number: 20030162516
    Abstract: A wireless distribution system includes a number of remote units distributed in a coverage area to receive wireless signals and to provide the signals through the distribution system to input ports of a node where the signals are combined, a number of input power monitors operatively connected to one or more of the input ports to determine power levels of signals received at the input ports, variable gain controllers to control signals received at some or all of the input ports, a node to combine a plurality of signals from the plurality of input ports, and a controller to provide control signals to control one or more of the variable gain controllers.
    Type: Application
    Filed: February 25, 2002
    Publication date: August 28, 2003
    Applicant: ADC Telecommunications, Inc.
    Inventor: Jeff Solum
  • Fiber optic isolator for use with multiple-wavelength optical signals
    Publication number: 20030161019
    Abstract: A fiber optic isolator device is used by fiber optic systems operating at more than one wavelength. The device may be inserted anywhere within the fiber network. The fiber optic device permits the separation of the wavelengths so that an optical isolator module can isolate a first wavelength without significantly affecting the second wavelength. This device is useful isolating a communications signal at 1.55 &mgr;m while avoiding significant losses for an optical time domain reflectometry signal, for example at 1.3 &mgr;m.
    Type: Application
    Filed: January 14, 2003
    Publication date: August 28, 2003
    Applicant: ADC Telecommunications
    Inventors: B. Barry Zhang, Liang-Ju Lu
  • Resilient detection of repeaters
    Publication number: 20030161342
    Abstract: An apparatus and method are detailed that allows for improved detection of communication devices and/or doublers in an associated physical communication links, in particular on HDSL communication links. The improved device apparatus and method additionally allows for the communication device to identify when all devices on a communication link have been detected and prevent premature termination of a discovery process. The improved device apparatus and method also allows the avoidance of improper detection of communication devices or doublers due to corrupted discovery response messages.
    Type: Application
    Filed: February 28, 2002
    Publication date: August 28, 2003
    Applicant: ADC DSL Systems, Inc.
    Inventor: Raymond Diaz
  • Flexible snap-together cable trough
    Patent number: 6609684
    Abstract: An adjustable cable management trough member and assembly. The assembly including first and second trough members having sidewalls extending from a base to define a U-shaped trough for receiving at least one telecommunications cable. The first trough member having a male end which is received by a female end of the second trough member. The trough members include slide posts and retention slots which engage each other to allow the trough members to be angled relative to each other in a first direction. The trough members also include a guide member and a guide slot which engage each other to allow the trough members to be angled relative to each other in a second direction. The first and second trough members may be identical.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: August 26, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: John T. Van Scoy, Alex Watts, Wayne Giesen
  • System having a meshed backplane and process for transferring data therethrough
    Patent number: 6611526
    Abstract: A meshed backplane has dedicated pairs of connections for high-speed serial connection in each direction between each of multiple application modules and each other application module. A management/control bus is provided for out-of-band signaling. The mesh of serial differential pairs may be used for management/control bus signals when necessary. A time division multiplexing fabric is also provided for telephony applications. A star interconnect region is provided for distribution of signals from redundant clocks.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: August 26, 2003
    Assignee: ADC Broadband Access Systems, Inc.
    Inventors: Kumar Chinnaswamy, Paul H. Dormitzer
  • Telecommunications patch panel
    Patent number: 6608764
    Abstract: A telecommunications module with a circuit board including pairs of connectors mounting on both sides of the circuit board held within a housing by structure that holds the circuit board offset from the front and rear of the module and connectors accessible openings in the rear wall of the module. A telecommunications patch panel including one or more modules mounted to the rear of a faceplate, each module with a circuit board including pairs of electrically linked connectors mounting on both sides of the circuit board held within the module by structure that holds the circuit board offset from the front and rear of the module with connectors accessible through a rear wall of the module and through the faceplate. A method of assembling a telecommunications module and a method of assembling a telecommunications patch panel including one or more modules attached to the rear of a faceplate.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: August 19, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Gordon P. Clark, Bradley Scott Kessler, Loren J. Mattson
  • Communication system with multicarrier telephony transport
    Patent number: 6608835
    Abstract: A multicarrier transmitting modem is described. The modem includes means for receiving strings of digital data each having one of a set of different possible values, means for mapping the strings into symbols each having the same fixed amount of phase of predetermined different waveforms corresponding to the different possible values in the set, means for modulating the fixed amount of phase plus an excess amount of phase of the predetermine waveforms onto multiple orthogonal carriers in response to the symbols, and means for transmitting the modulated carriers to a distribution network.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: August 19, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Michael J. Geile, Harold A. Roberts, Michael J. Fort, Jeff Solum
  • Electrical connections within substrates
    Publication number: 20030151905
    Abstract: A substrate having a conductive plane and a via passing through the conductive plane is provided. The conductive plane contacts the via to electrically interconnect the via and the conductive plane. A gap in the conductive plane separates a surface of the via from the conductive plane to provide an uninterrupted path for electrical current flowing substantially on the surface of the via.
    Type: Application
    Filed: February 11, 2002
    Publication date: August 14, 2003
    Applicant: ADC DSL Systems, Inc.
    Inventor: Gary Gottlieb
  • In-rush current protection
    Publication number: 20030151445
    Abstract: A circuit for controlling inrush current to a load is provided. The circuit includes a variable impedance device having a control input. The variable impedance device is coupled between a power supply interface and a load interface. The circuit also includes a control circuit coupled to the control input of the variable impedance device and also coupled to the load interface. The control circuit is adapted to provide a signal at the control input of the variable impedance device which results in a linear increase in applied voltage to the load when the circuit is coupled to an input power source. A resistor is coupled between the first and second terminals of the power supply interface to provide a current discharge path for the control circuit when the circuit is disconnected from the power supply.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 14, 2003
    Applicant: ADC DSL Systems, Inc.
    Inventor: George Bertran Dodson
  • Ingress protection in a communication system with orthogonal carriers
    Patent number: 6606351
    Abstract: A method for reducing ingress in orthogonal carriers is described. The method includes receiving a plurality of orthogonal carriers in an upstream frequency bandwidth and polyphase filtering the plurality of orthogonal carriers into a first and second plurality of carrier bands.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: August 12, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Mark J. Dapper, Michael J. Geile
  • CIRCUITS AND METHODS FOR TESTING POTS SERVICE
    Publication number: 20030147507
    Abstract: Circuits for testing POTS service on a shared POTS/xDSL carrier include microfilters for selective coupling to the subscriber loop side of an xDSL filter associated with a subscriber line interface circuit. Such configurations facilitate testing of the POTS service using an insertion point that is between the xDSL filter and the subscriber loop in a manner that is transparent to subscribers.
    Type: Application
    Filed: February 5, 2002
    Publication date: August 7, 2003
    Applicant: ADC DSL Systems, Inc.
    Inventors: Jie Dong Wang, Christopher S. Smith
  • Communicating errors in a telecommunications system
    Patent number: 6603822
    Abstract: A method of communicating errors to a head end of a telecommunications system is described. The method inclues monitoring a downstream transmission channel at a service unit for transmission errors, generating a signal at the service unit that indicates errors in the downstream transmission and transmitting the signal to the head end on an associated upstream communication channels.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: August 5, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Jeffrey Brede, Steven P. Buska
  • Snap together cable trough system
    Patent number: 6603073
    Abstract: A cable management assembly and method of assembly. The trough assembly includes first and second trough members each having first and second upstanding sidewalls extending from a base defining a generally U-shaped trough which defines first and second cable pathways respectively for receiving at least one telecommunications cable. A first end of the first trough member and a second end of the second trough member define a snap-together mating arrangement which couples through longitudinal sliding movement the first trough member to the second trough member so that the first cable pathway communicates with the second cable pathway.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: August 5, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventor: Matthew D. Ferris