Waveform shaping device, equalizer, receiving system, method of controlling waveform shaping device, control program, and computer-readable medium in which control program is recorded
US8427256B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jan 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03828
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A waveform shaping device shapes a waveform of an externally input signal and outputs the input signal with the shaped waveform as an output signal to an equalizer for compensating a distortion of a signal, and includes a nonlinear process section for generating a nonlinear process signal (i) in which positive and negative signs of a low-frequency-free signal obtained by removing at least a direct current component from frequency components of the externally input signal are retained and (ii) which broadly monotonically increases nonlinearly with respect to the low-frequency-free signal when values of the low-frequency-free signal are at least in the vicinity of 0, the nonlinear process signal being added to the low-frequency-free signal so as to generate the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.