Patents Assigned to ADC DSL Systems, Inc.
  • Patent number: 7298121
    Abstract: An improved circuit and method for increasing the stability of switch-mode power supplies via frequency fold-back is disclosed. For example, a circuit for increasing the stability of a switch-mode power supply using the compensation signal to control the frequency of the oscillator is disclosed, which includes an operational amplifier that functions to scale the compensation signal. Thus, the switching frequency of the power supply involved is decreased as the load is reduced. This novel use of the compensation signal to control the switching frequency of a switch-mode power supply significantly increases the stability of the power supply as compared to prior switch-mode power supplies. Therefore, the switch-mode power supply may be used for those applications where relatively high stability is desired.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: November 20, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Michael Carter, Randall L. Powers
  • Patent number: 7274731
    Abstract: A communications device apparatus and method is detailed that allows for improved system statistics gathering of network communication links, dataports, and system status. The improved communications device apparatus and method utilizes a relative time reference or clock for the determination of the starting and ending of system statistics gathering time periods. Thus allowing for the contiguous gathering of system statistics without errors or gaps caused by time changes made to an absolute time reference.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: September 25, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventor: Raymond Diaz
  • Publication number: 20070217099
    Abstract: A method for reducing the occurrence of false ground fault detections in a central office terminal is provided. The method includes generating a no-fault signal when no ground current is detected, delaying generation of a fault signal when ground current is detected at least for the duration of an expected pulse in AC induced signal, and when the ground current persists for a sufficient period, generating a signal indicating a fault condition.
    Type: Application
    Filed: March 16, 2006
    Publication date: September 20, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventors: William Fox, Michael Carter
  • Publication number: 20070217101
    Abstract: Systems and methods for auto-resetting span power protection are provided. In one embodiment, a method for deactivating a protective device is provided. The method comprises determining when an overload condition occurs on a communication medium; when the overload condition occurs, deactivating at least one protective device by applying, for a first predetermined period of time, a short-circuit to an output of a power supply that provides a holding current to the at least one protective device; and after the first predetermined period of time has elapsed, removing the short-circuit on the output of the power supply.
    Type: Application
    Filed: March 17, 2006
    Publication date: September 20, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventors: Michael Carter, William Fox
  • Patent number: 7272002
    Abstract: Methods and systems for auxiliary cooling of electrical device housings are provided. In one embodiment, an electronics device enclosure system is provided. The system comprises a housing, wherein the housing encloses one or more electronic devices; a backplane situated within the housing wherein at least one of the one or more electronic devices are coupled to the backplane; and an auxiliary cooling system coupled to the backplane and adapted to receive electrical power from one or more power sources, wherein the auxiliary cooling system comprises one or both of a thermoelectric cooling module and a fan, and wherein the auxiliary cooling system is adapted to increase the heat transfer from the one or more electronic devices to an environment external to the housing.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: September 18, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventor: Richard J. Drapeau
  • Publication number: 20070201671
    Abstract: A conducted emissions filter is disclosed. The filter includes a main supply port adapted to provide a power signal to a power supply port, along with a common mode choke coupled between the main supply port and the power supply port with at least one adjustable level of inductance for substantially matching a level of impedance introduced through the power supply port without adversely impacting operation of the filter. The filter further includes at least one filter attenuation element connected across return and supply lines between the at least one common mode choke and the power supply port, at least one return line noise return connected to the return line between the at least one filter attenuation element and the power supply port, and at least one supply line noise return connected to the supply line between the at least one filter attenuation element and the power supply port.
    Type: Application
    Filed: February 27, 2006
    Publication date: August 30, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventor: Clark Tollerson
  • Publication number: 20070188317
    Abstract: A method for accessing an electronic circuit in an enclosure using near field induction is disclosed. The method involves attaching at least one local access port connector with an external transformer core partition to a near field induction port on an external non-conductive surface of a panel of the enclosure and generating at least one inductive field between the external transformer core partition and an internal transformer core partition. Without a direct electrical connection, the method provides for communicating with the electronic circuit through the at least one local access port connector of the panel using the at least one inductive field.
    Type: Application
    Filed: February 15, 2006
    Publication date: August 16, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventor: Randall Powers
  • Patent number: 7254217
    Abstract: A fault associated with a communication medium is analyzed by correlating a first set of information indicative of echo associated with the communication medium with a second set of information indicative of echo. The fault is characterized based on the correlation between the first set of information and the second set of information. The first set of information and the second set of information can include echo canceller coefficients generated by an echo canceller coupled to the communication medium.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: August 7, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Michael J. Rude, Ronald R. Gerlach, Mo-Ching Justine Lau, Tiet Pham, William W. Lu
  • Publication number: 20070165994
    Abstract: A fiber sub-system is provided. The fiber sub-system comprises a fiber optic transmission module, one or more contact boards adapted to couple to shelf interface connectors, and a midplane adapted to couple with the one or more contact boards and the fiber optic transmission module enabling communication between the one or more contact boards and the fiber optic transmission module without requiring modifications to the fiber optic transmission module. The fiber sub-system also comprises a shell for encapsulating the fiber optic transmission module, the one or more contact boards, and the midplane.
    Type: Application
    Filed: January 19, 2006
    Publication date: July 19, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventors: Deborah Heller, Suleyman Sumer, James Torok, Thomas DiVittorio
  • Patent number: 7239627
    Abstract: A system for extending the effective distance of digital subscriber line service is provided. The system includes a central office terminal having a data interface and a plurality of line units. The system further includes at least one communication link, coupled to one of the plurality of line units, that carries signals using digital subscriber line service and at least one remote access multiplexer, coupled to the at least one communication link. The at least one remote access multiplexer includes a plurality of ports that are adapted to provide digital subscriber line service. The remote access multiplexer is adapted to multiplex signals between the plurality of ports and the at least one communication link. Further, the at least one remote access multiplexer is located at a distance from the central office terminal so as to provide digital subscriber line service to user terminals that are located more than 12 kilofeet from the central office terminal.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: July 3, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Dieter H. Nattkemper, Robert S. Kroninger, Shaji Thomas
  • Patent number: 7237204
    Abstract: A first process communicates to a second process what data will be used to display a graphical user interface element such as a window or screen. The second process determines if the data used to display the graphical user interface element has changed, and, if the data used to display the graphical user interface element has changed, communicates to a third process that the data used to display the graphical user interface element has changed. Moreover, the third process receives the communication that the data used to display the graphical user interface element has changed, and, in response to the communication that the data used to display the graphical user interface element has changed, displays the graphical user interface element.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: June 26, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventor: David J. Kasper, II
  • Patent number: 7237206
    Abstract: A graphical user interface element such as a window or a screen is displayed on an output device by sending a single message indicating that the graphical user interface element should be displayed. The message is received, and all the components of the graphical user interface element are displayed. After that, the graphical user interface element can be updated on a component-by-component basis.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: June 26, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventor: David J Kasper, II
  • Publication number: 20070109740
    Abstract: Methods and systems for auxiliary cooling of electrical device housings are provided. In one embodiment, an electronics device enclosure system is provided. The system comprises a housing, wherein the housing encloses one or more electronic devices; a backplane situated within the housing wherein at least one of the one or more electronic devices are coupled to the backplane; and an auxiliary cooling system coupled to the backplane and adapted to receive electrical power from one or more power sources, wherein the auxiliary cooling system comprises one or both of a thermoelectric cooling module and a fan, and wherein the auxiliary cooling system is adapted to increase the heat transfer from the one or more electronic devices to an environment external to the housing.
    Type: Application
    Filed: November 16, 2005
    Publication date: May 17, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventor: Richard Drapeau
  • Patent number: 7190783
    Abstract: An integrated digital subscriber line transceiver includes a single integrated circuit that has a digital signal processing engine, a time division multiplexing framer (for example, a T1/E1 framer), and a static random access memory. The integrated circuit also includes a microprocessor coupled to the digital signal processing engine, the time division multiplexing framer, and the static random access memory. The digital signal processing engine, in one embodiment, includes an HDSL2/G.SHDSL data pump and an HDSL2/G.SHDSL framer.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: March 13, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Ronald R. Gerlach, Mo-Ching Justine Lau, Ramya Niroshana Dissanayake
  • Patent number: 7188268
    Abstract: An output of a first data register is coupled to an input of a second data register. The same periodic clock signal clocks both data registers. A controller monitors the clock signal, a first load signal and a read signal. The controller generates a guard band signal using the clock signal and the first load signal. The controller also generates a second guard band signal from the read signal and the clock signal. A second load signal, that is used to load the second data register, is created by performing a logical AND operation on the two guard band signals.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 6, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Dennis J. Vandenberg, Douglas G. Gilliland
  • Publication number: 20070041226
    Abstract: In one embodiment, a power supply comprises a flyback transformer comprising a primary winding and at least two secondary windings. An output voltage is developed across a first one of the secondary windings. The power supply comprises a transistor coupled to the first one of the secondary windings. The output voltage is regulated about a nominal output voltage by operating the transistor in a linear mode when current is flowing through the first one of the secondary windings and by operating the transistor in an off mode when current is not flowing through the first one of the secondary windings.
    Type: Application
    Filed: August 17, 2005
    Publication date: February 22, 2007
    Applicant: ADC DSL Systems, Inc.
    Inventor: Randall Powers
  • Patent number: 7177267
    Abstract: A transmission system is provided. The system includes a hardware monitor adapted to collect performance information about associated hardware components, a system information database adapted to refresh based on the collected performance information and to generate system status information, and a hardware controller adapted to selectively communicate alarm change messages to one or more of the hardware components based on the collected performance information and the system status information.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: February 13, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Jeffrey Oliver, Lovlesh Tandon
  • Patent number: 7173941
    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: Grant
    Filed: February 28, 2002
    Date of Patent: February 6, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventor: Raymond Diaz
  • Patent number: 7169288
    Abstract: Systems and methods of cathodic protection. The system includes a metallic housing, a backplane situated within the metallic housing, a cathodic protection card coupled to the backplane and a permanent anode, external to the metallic housing, coupled to the cathodic protection card through an isolated port. The cathodic protection system is powered using span power. The permanent anode and metallic housing are adapted to form a closed circuit when both come in contact with an electrolyte. The permanent anode is maintained at a higher potential than the metallic housing.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: January 30, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventor: Richard J. Drapeau
  • Patent number: D553105
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: October 16, 2007
    Assignee: ADC DSL Systems, Inc.
    Inventors: Deborah H. Heller, Suleyman O. Sumer, James X. Torok, Thomas DiVittorio