Upstream signal capture and processing in a subscriber device
US9948981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2016 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Mar 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An upstream signal capture device includes a signal capture circuit having a first port and a second port. The first port of the signal capture circuit is arranged for coupling to a diplexer. The upstream signal capture device also includes an amplifier having a first port and a second port, the first port of the amplifier coupled to the second port of the signal capture circuit, and an analog-to-digital converter (ADC) having a first port and a second port, the first port of the ADC coupled to the second port of the amplifier. The upstream signal capture device further includes a digital threshold detector having an input and output, the input of the digital threshold detector coupled to the second port of the analog-to-digital converter, and a memory configured to capture samples of the upstream signal. When using the upstream signal capture device to capture an upstream signal, a portion of an upstream signal is diverted into an analog-to-digital converter (ADC). A portion of the upstream signal is converted into a digital signal, and when the digital signal exceeds a threshold, the signal is captured in a memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.