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| Number | Title | Issue Date |
| 7149938 | Non-causal channel equalization A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing three thresholds; receiving a binary serial data stream; comparing the first bit estimate in the data stream to a second bit value rec... | 12/12/2006 |
| 7003029 | Method and device for equalizing and decoding a data signal A method for equalizing and decoding an error-protected data signal transmitted via a radio channel is described. According to the method, an equalized data signal is calculated at the receiving end in a demodulator with a first channel estimator. The equalized data... | 02/21/2006 |
| 5495173 | Method and apparatus for characterizing a differential circuit A method and apparatus is provided for characterizing a differential circuit. A measurement system (200) is used to introduce input signals to the differential circuit and to measure corresponding output signals. Particularly, an input differential wave i... | 02/27/1996 |
| 4697047 | Trunk coupling unit A relay circuit comprise first and second relays having respective terminals at which positive cross-talk of a signal of positive polarity is produced when the other terminals to which the positive polarity signal is applied are in the make and break stat... | 09/29/1987 |
| 4066229 | Device for preventing traction power harmonic interference on high frequency track circuits An overlay selective harmonic transducer device is installed on affected track circuits, that is, track circuits on which interference with normal functioning has occurred due to traction power harmonics.... | 01/03/1978 |
| 3932713 | Induction cancellation circuit An induction cancellation circuit is used to minimize the effects of AC induced signals appearing on a pair of telephone lines on the activation of a current sensor by a DC loop current flowing on the telephone lines. An input of the current sensor is cou... | 01/13/1976 |
