Counting circuit with rewritable non-volatile memory, and counting method
US6314155A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1998 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Oct 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K21/403
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency counter 1 includes a binary counter section 11 having a binary counter 20 for counting up frequency data, and a EEPROM counter section 12 having an EEPROM 40 containing frequency data. In a frequency count processing, frequency data of the EEPROM 40 are loaded into the binary counter 20. The binary counter 20 executes count up by a specified frequency on the loaded frequency data. The counted up frequency data are written into the EEPROM 40 to update the frequency data of the EEPROM 40. In one frequency count process, rewriting of the EEPROM 40 is completed once, which means that the number of time the EEPROM 40 is rewritten is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.