Wave reforming circuit
US6459315B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Mar 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03834
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wave reforming circuit for correcting the upward and downward asymmetry of and binary coding a data train signal modulated by EFM modulation or another modulation method giving a substantially equal rate of occurrence of “1” and “0”, which can output to a comparator outputting binary data a binary signal holding a predetermined temporal mean value regardless of fluctuation in the temporal mean value of the input signal and having superior symmetry compared with the related art using as a reference value three types of reference voltages (0 level, positive side, and negative side) generated by inputting an integrated value of the output of the comparator into a charge pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.