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Pulse Or Digital Communications > Cable Systems And Components > Transformer Coupling Transformer CouplingTransformer Coupling patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/01/07 - 20070253494 - Digital subscriber line induction neutralizing transformer network A digital subscriber line (DSL) circuit is disclosed and includes at least one transformer exciting network (TEN) adapted to supply a low-impedance path to ground in response to an excitation current. The excitation current has a non-DSL frequency, and the low-impedance path to ground allows the excitation current to flow ... 04/12/07 - 20070081599 - Method and apparatus for measuring reflected voltage of transformer A method and apparatus of sampling reflected voltage signal of a transformer is proposed. Sampling signals are used for generating hold voltages by sequentially sampling the reflected voltage from the transformer. A buffer circuit generates a buffer signal from the higher voltage of hold voltages. A sampling switch periodically conducts ... 03/01/07 - 20070047664 - Multi-band line interface circuit with line side cancellation A line interface circuit with line side cancellation of a communication device is described herein. In one embodiment, a communication device includes a line interface circuit for interfacing a communication line. The line interface circuit includes a driver for driving multiple transmitting signals onto the communication line over multiple transmitting ... 01/18/07 - 20070014374 - Active rectifier with load impedance switching Active rectification with load impedance switching for communication across a pulse transformer is presented. Load impedance switching is used for communicating data from the secondary side of the transformer to the primary side during data frames. During power frames, the load impedance is switched to a capacitor for the storage ... 01/18/07 - 20070014373 - Method and apparatus for cancellation of magnetizing inductance current in a transformer circuit A feedback method and apparatus for cancellation of magnetizing inductance current are presented. A voltage driver applies a voltage signal to a primary of a transformer. Feedback apparatus detect changes in the voltage driver output current that are attributable to magnetizing inductance current. Changes in output current are used to ... 01/18/07 - 20070014372 - Encoding method and apparatus for a dual mode super source follower circuit Encoding of a dual mode digital signal for transfer using a dual mode super source follower circuit to drive the signal across a pulse transformer is presented. The dual mode signal comprises data in one mode and power/control in the other mode. In the power/control mode the magnitude of the ... 01/18/07 - 20070014371 - Method and apparatus for detection of load impedance modulation in a transformer circuit A method and apparatus for detection of load impedance modulation as a result of communication of data from the secondary to the primary side of a transformer are presented. The load impedance on the secondary of the transformer barrier is modulated differentially using data to be communicated across the barrier. ... 01/11/07 - 20070009052 - Method and apparatus for synchronization of data in a transformer circuit A method and apparatus for synchronizing the secondary side to the primary side of a transformer circuit are presented. A preamble which consists primarily of data pulses and inverted power pulses is used initially to obtain the parameters for and to set up a phase locked loop. For example, an ... 01/11/07 - 20070009051 - Active impedance synthesis circuit, for example for xdsl splitters An arrangement includes a transformer having a primary winding and a secondary winding, the transformer exhibiting an impedance across the primary winding, and an impedance synthesis circuit. The impedance synthesis circuit includes a transfer function element having a frequency spectrum. The transfer function element has associated a gain element and ... 11/30/06 - 20060269002 - Method for data transmission via a data transmission path with inductive transformers, and a data transmission apparatus A method and an apparatus for data transmission via a transmission path having at least two inductive transformers, which each have a primary winding with a time constant and have a secondary winding. The method includes driving the primary windings to transmit an information event by means of drive signals ... 07/20/06 - 20060159186 - Data, power and supervisory signaling over twisted pairs A system and method for conveying supervisory signaling and power over the same twisted wire pairs in a cable as are used to carry data communications in accordance with a predetermined communications protocol. Supervisory signals having first and second differential components are generated. The first component is coupled to both ... 05/25/06 - 20060109918 - Transformer data coupler with high common mode immunity A data coupler comprises two CMOS drivers which are supplied with a data signal and a delayed version of the data signal to drive a primary winding of a transformer with narrow pulses of opposite polarity corresponding to respective edges of the data signal. A secondary winding of the transformer ... 12/08/05 - 20050271149 - Rf isolator for isolating voltage sensing and gate drivers A circuit package for providing isolation between a controller on a first side of a switched power supply and a second side of the switched power supply. An isolation link provides voltage isolation between the first and second sides and includes on the first sides circuitry for transmitting a driver ... 12/08/05 - 20050271148 - Rf isolator with differential input/output A system for providing voltage isolation includes the first and second chips, each containing functional circuitry. The chips are interconnected via at least one RF isolation link that provides voltage isolation between the first chip and the second chip and limits common mode signals therebetween. ... 12/08/05 - 20050271147 - Transformer isolator for digital power supply A system for providing voltage isolation includes the first and second chips, each containing functional circuitry. The chips are interconnected via at least one RF isolation link that provides voltage isolation between the first chip and the second chip. ... 10/27/05 - 20050238107 - Balanced transmitting apparatus A balanced transmission signal Tx (t) (voltage e, −e) is applied to a transmission line (L1, L2), a suppression signal (ec) is generated from a common mode suppression signal source (ec), and the suppression signal (ec) is superposed on respectives of balanced transmission signals via adders (15a, 15b). By pertinently ... ### FreshPatents.com Support |