Multiple detection circuit for accessory jacks
US8193834B2 · kind B2 · utility
11Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2010 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Dec 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This document discusses, among other things, a multiple accessory detection apparatus and methods for identifying accessories coupled to a multi-pin connector of an electronic device. The apparatus can include a first reference generator, a second reference generator, a plurality of switches to couple an output of the second generator to an accessory device and a comparator. The comparator can generate identifying information about the accessory device using the reference information received from the first reference generator and test information received using the second reference generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.