Adaptive envelope extracting apparatus, signal decoding apparatus and short-distance contactless communication apparatus applying the adaptive envelope extracting apparatus, and method thereof
US9722770B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jan 15, 2017 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Jan 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An envelope extracting apparatus includes: a clock extracting device arranged to extract a clock signal of a receiving modulation signal according to a first biasing voltage; and an edge detecting device arranged to generate a detecting signal to indicate an envelope edge of the receiving modulation signal according to a delayed clock signal of the clock signal and a second biasing voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.