Arbitrary delay buffer
US10250242B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2016 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Apr 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00247
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A signal may be arbitrarily delayed in discrete steps by an arbitrary delay buffer having an analog delay and a digital delay. An analog delay may have a number of selectable delay stages (e.g. ring oscillator with VCDL stages). A digital delay may have rising and falling edge detectors, resettable ring oscillators that oscillate in response to rising or falling edges and counters to count oscillations and generate rising and falling edge delay signals when oscillation counts reach rising and falling edge delay counts. A resettable ring oscillator may have a resettable stage (e.g. VCDL) that may be enabled and disabled. Selection of one or both digital and analog delays and respective delay times may be based on one or more characteristics. For example, an analog delay may delay an input signal or a delayed input signal received from the digital delay based on input signal frequency or total delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.