Apparatus and method for converting a non-logic-family signal level to a logic-family signal level
US6172523A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/028
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for translating a non-logic-family signal level into a logic-family signal level, the system comprising: a source of a non-logic-family signal that can assume a first and a second non-logic-family state; and a translator for determining whether the signal is in the first non-logic-family state, and if so, providing a translated signal having a first-logic family level. The translator can take the form of a comparator controlling an output transistor tied to a pull-up resistor, or a programmed processor. Examples of the logic-families include transistor-transistor logic (TTL) and complimentary metal oxide semiconductor (CMOS) logic. Examples of sources of non-logic-family signals includes a light emitting diode, a buzzer and a beeping device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.