Apparatus and method to use a single reference component in a master-slave configuration for multiple circuit compensation
US6535047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | May 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00384
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A single external impedance element is used to perform multiple circuit compensation. A reference impedance code is first generated from a master circuit, and then the reference impedance code is provided (as a slave impedance code) to one or more slave circuits to activate devices in the slave circuit(s). Impedance-generation devices coupled to the slave circuit are then activated one at a time until their generated impedance corresponds to the impedance generated by the slave circuit. The reference impedance code can be incremented or decremented (e.g., shifted) to generate slave impedance codes corresponding to different impedance values, according to impedance requirements of various different circuits that require compensation. Using the single external impedance element for compensation of multiple circuits reduces motherboard and packaging costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.