Consumable component identification and detection
US6263170A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/55
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A consumable component identification and detection apparatus enables a host device to detect and identify a consumable component inserted into the host device, such as a printer. A passive circuit element is embedded into the consumable component and remaining circuit elements are included in the host device so that when the consumable component is in the host device an electrical circuit having known characteristics is completed. The electrical circuit, such as a filter, is energized by a test signal and the output from the electrical filter together with the test signal are input to a characterization circuit to identify/detect the consumable component. A counter/timer may be used as part of the characterization circuit to count clock pulses when the output from the electrical circuit after initial processing is coincident with the test signal. The count is interpreted to identify/detect the consumable component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.