Data transmission apparatus for high-speed transmission of digital data and method for automatic skew calibration
US7278069B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Oct 2, 2007 |
| Priority date | — |
| Expiry date | Apr 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A data transmission apparatus and method employing the phase noise characteristics within the receiving registers to measure and control the characteristics of the channel as a function of the data pattern and to compensate for production tolerances within the channel by altering the timing characteristics of the signal at either the transmitter or receiver as a function of the data. Time offsets between different signals that form the communication channel are measured for different frequencies and/or for different data patterns transmitted through the channel and stored to compensate for an inter-signal skew by performing relative alignment of the measured offsets to a main clock edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.