Modular gray code counter
US5097491A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K23/005
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Gray Code counter is provided having synchronous, modular circuits for each of the three types of bit positions, i.e., least significant bit ("LSB"), most significant bit ("MSB") and middle bit ("MB"). One LSB and MSB circuit each are used with as many MB circuits in between as are necessary to provide a counter having the desired number of bits. The LSB, MSB and MB circuits' designs are truly modular in that duplicate MB circuits can be freely coupled together between an LSB circuit and an MSB circuit to provide the desired number of counter bits without modifying any input or output interfaces between the circuits. The counter can count either up or down in accordance with a normal Gray Code sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.