Discriminator
US6271690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A discriminator capable of generating a multi-level signal with less restrictions is provided. In a discriminator D1, a wave-shaping circuit 3 shapes the waveform of one branched multi-level signal MS, according to a control signal CS from a control signal generator 10 so that a detector 4 that follows the wave-shaping circuit 3 can correctly detect a first reference level RL.sub.1. The detector 4 detects the first reference level RL.sub.1 from an output signal OS.sub.3 from the wave-shaping circuit 3. A reference level generator 5 generates a second reference level RL.sub.2 of the multi-level signal MS. A threshold generator 6 generates thresholds Th.sub.1, Th.sub.2, and Th.sub.3 as much as required according to the first and second reference levels RL.sub.1 and RL.sub.2. Comparators 82 to 84 compares the amplitude of the other branched multi-level signal MS with the thresholds Th.sub.1, Th.sub.2, and Th.sub.3. A control signal generator 10 generates a control signal CS according to the comparison results from the comparators 82 to 84. The above structured discriminator D1 enables the transmitting side to generate a multi-level signal with less restrictions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.