Method and apparatus for adaptive DC level control
US7190784B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Mar 12, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/71
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is provided for DC level control in a line card. The method includes receiving a digital input signal, determining a first DC component value of the digital input signal at a first preselected time, and determining a second DC component value of the digital input signal at a second preselected time. The method further includes determining a difference between the first DC component value and the second DC component value. The method includes providing the first DC component value to a digital-to-analog converter in response to determining that the difference is less than a first preselected value. The apparatus includes a digital-to-analog converter and logic. The logic is coupled to the digital-to-analog converter, wherein the logic is capable of receiving a digital input signal, determining a first DC component value of the digital input signal at a first preselected time, and determining a second DC component value of the digital input signal at a second preselected time. The logic is farther capable of determining a difference between the first DC component value and the second DC component value, and providing the first DC component value to the digital-…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.