Peripheral device receiver detection in a high noise environment
US7190714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Mar 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A receiver detector of a peripheral device for use in a computer system to detect whether a receiver is electrically coupled to a data port of the peripheral device includes a modulator, a high pass filter, and a demodulator. The modulator is configured to modulate a receiver detect signal at a frequency that is higher than a noise frequency, below which high amplitude noise can develop. The high pass filter is electrically coupled to the receiver detect signal and is configured to block frequencies of the receiver detect signal that are below the noise frequency and pass a filtered receiver detect signal. The demodulator is configured to demodulate the filtered receiver detect signal and produce a recovered receiver detect signal that is indicative of whether a receiver is electrically coupled to the data port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.