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Christopher C. Cunningham

Christopher C. Cunningham, Brighton, MA US

Patent application numberDescriptionPublished
20100289478MODELING AND CALIBRATING A THREE-PORT TIME-DOMAIN REFLECTOMETRY SYSTEM - A three-port TDR front end comprises numerous components. An exemplary three-port TDR front end is a DSL modem. Information-bearing TDR signals are distorted as they pass through these components. With a perfect model of the response of its front-end, a TDR system usually can compensate for the effects of its front-end. In reality, however, the electrical characteristics of each component vary from design-to-design, board-to-board, and slowly over time. The result is imperfect knowledge about the true response of the front-end, errors in the model of the front-end, and degraded TDR performance. At least for this reason it is important to precisely calibrate the response of the TDR front-end through the use of a TDR modeling system.11-18-2010

Patent applications by Christopher C. Cunningham, Brighton, MA US

Christopher C. Cunningham, Burlington, VT US

Patent application numberDescriptionPublished
20090194972FOOTBED FOR GLIDING BOARD BINDING - A method and apparatus for providing a gliding board binding, such as a snowboard binding. The binding may include an adjustment indicator that allows for determination of a longitudinal position of the base relative to a gliding board, heel-to-toe position of the base relative to a gliding board and/or an angular position of the base relative to a gliding board when the base is secured to the gliding board. The adjustment indicator may be included with a footbed that is removable from a binding base, e.g., that includes a foot engagement member to secure a rider's foot to the binding and board. A removable footbed may include a toe portion that is adjustable in position relative to a heel portion of the footbed. A gliding board may include a channel for mounting a binding that is arranged in the board core so that no portion of the board core is located on top or bottom sides of the channel, and instead so the top and bottom reinforcement layers are located above and below the channel.08-06-2009
20100133786BINDING COMPONENTS FOR A GLIDING BOARD - A snowboard binding and hold-down device that may flex or move with the snowboard when ridden to minimize any impact on flex characteristics. The snowboard binding may be compatible with a variety of snowboard binding mount arrangements.06-03-2010
20100133787BINDING COMPONENTS FOR A GLIDING BOARD - A snowboard binding and hold-down device that may flex or move with the snowboard when ridden to minimize any impact on flex characteristics. The snowboard binding may be compatible with a variety of snowboard binding mount arrangements.06-03-2010
20100133788BINDING COMPONENTS FOR A GLIDING BOARD - A snowboard binding and hold-down device that may flex or move with the snowboard when ridden to minimize any impact on flex characteristics. The snowboard binding may be compatible with a variety of snowboard binding mount arrangements.06-03-2010
20100219613FOOTBED FOR GLIDING BOARD BINDING - A method and apparatus for providing a gliding board binding, such as a snowboard binding. The binding may include an adjustment indicator that allows for determination of a longitudinal position of the base relative to a gliding board, heel-to-toe position of the base relative to a gliding board and/or an angular position of the base relative to a gliding board when the base is secured to the gliding board. The adjustment indicator may be included with a footbed that is removable from a binding base, e.g., that includes a foot engagement member to secure a rider's foot to the binding and board. A removable footbed may include a toe portion that is adjustable in position relative to a heel portion of the footbed. A gliding board may include a channel for mounting a binding that is arranged in the board core so that no portion of the board core is located on top or bottom sides of the channel, and instead so the top and bottom reinforcement layers are located above and below the channel.09-02-2010

Patent applications by Christopher C. Cunningham, Burlington, VT US

Christopher C. Cunningham, Belmont, MA US

Patent application numberDescriptionPublished
20090268797NONLINEAR DEVICE DETECTION - Data is collected and interpreted in response to one or more transmitted signals to determine if an interfering device is present. If an interfering device is present, a message is generated and presented to a user indicating, for example, that the installation of a micro-filter is appropriate. The system can then determine if the micro-filter was installed properly and, for example, commence communication or, if the micro-filter(s) did not solve the problem, initiate communication with or contact a technician.10-29-2009