Cable equalizer for AES digital audio data
US6381270B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Jan 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03885
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An electrical signal is equalized at the receiving end of a transmission path by applying the signal both to a frequency-dependent emphasizer and to a first port of a mixer and applying the output signal of the frequency-dependent emphasizer to a second port of the mixer. The mixer combines the signals received at its first and second ports in accordance with the amplitude of a mixer control signal to generate a mixer output signal. A control signal is generated from the mixer output signal. The control signal has an amplitude dependent on the absolute value of the derivative of the amplitude of the output signal of the mixer during an interval that starts after the beginning of a bit cell and ends before the end of the bit cell. The control signal is applied to the mixer as the mixer control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.