Interface for multiple receivers and a resistor ladder
US7511651B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2007 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Sep 26, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus is provided for a switching interface for a first receiver, a second receiver, and a resistor ladder. A first terminal is coupled to a first resistor of the resistor ladder. A second terminal is coupled to the first resistor. A third terminal is coupled to a reference voltage. A switch has a first state coupling the first terminal to the third terminal and a second state coupling the second terminal to the third terminal. A first analog-to-digital (A/D) converter is coupled to the resistor ladder and the first receiver. The first A/D is configured to compare a first voltage with a second voltage to determine if the switch is positioned in the first state or the second state. A second analog-to-digital (A/D) converter is coupled to the resistor ladder and the second receiver and also configured to perform a voltage comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.