| Patent Number |
Title Of Patent |
Date Issued |
| 7586998 |
Method and apparatus for receiver pulse response determination |
September 8, 2009 |
| A pulse response for a receiver, as an array PR, is found from the receiver's symbol stream.For a continuous stream of arbitrary data, a value of the array PR[k] can be determined from the signal levels of the symbols received. The stream of received data is input to a FIFO. Between |
| 7545886 |
Method and apparatus for eye-opening based optimization |
June 9, 2009 |
| An eye opening measurement technique, that does not interrupt a receiver's normal operation, is used as a metric for optimizing any selected parameters of the receiver's operation. If eye opening size decreases, as a result of a change to a receiver parameter, the polarity for stepwise |
| 7424380 |
Method and apparatus for integrated distribution function capture |
September 9, 2008 |
| Probability distribution functions (PDFs), of a periodic input data signal, can be used to provide eye-diagram information. An advantage of PDFs, over conventional approaches to eye-diagram collection, is that analog-to-digital conversion can be accomplished by the slicer of a receiv |
| 7400694 |
Method and apparatus for eye-opening based optimization |
July 15, 2008 |
| An eye opening measurement technique, that does not interrupt a receiver's normal operation, is used as a metric for optimizing any selected parameters of the receiver's operation. If eye opening size decreases, as a result of a change to a receiver parameter, the polarity for stepwise |
| 7383518 |
Method and apparatus for performance metric compatible control of data transmission signals |
June 3, 2008 |
| The DC offset of a differential signal can be changed by differentially shifting the DC offset of each of its signals. Techniques are presented for changing, in a controlled way, the DC offset of a differential signal as received by a receiver of a data transmission system. Several class |
| 7382825 |
Method and apparatus for integrated channel characterization |
June 3, 2008 |
| A periodic broadband signal can be used to determine the S.sub.21 measurement for a channel by stimulating the channel across a spectrum of interest. The channel response to such broadband signal can be measured from undersampled data captured at the receiver. The Fourier transform of |
| 7262621 |
Method and apparatus for integrated mixed-signal or analog testing |
August 28, 2007 |
| A functional block under test (FBUT), comprising mixed-signal or analog circuits, can be tested by a digital test machine (DTM). A DTM sources test vectors to, and expects to receive certain vectors back from, a DUT. The DUT is a single, physically contiguous, IC upon which is integrated |
| 7236550 |
Method and apparatus for tail cancellation equalization |
June 26, 2007 |
| Subtraction of a signal 111 from a pulse response 110, where signal 111 provides a good approximation of the tail of pulse response 110, can provide a method for canceling the tail of pulse response 110. For continuous data streams, signals X(t), 223 and Y(t) can correspond to, respe |
| 7194365 |
Method and apparatus for integrated undersampling |
March 20, 2007 |
| An undersampling system can comprise an IC that has integrated, on the same physically contiguous IC, both an undersampler circuit and a receiver circuit whose input is to be monitored by undersampling. For a current phase of sample clocks relative to an input signal, the input signa |
