Correction circuit and real-time clock circuit
US9362920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Oct 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/32
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention provides a correction circuit. The correction circuit includes a frequency dividing circuit, a frequency dividing coefficient operation circuit, a built-in temperature collection circuit, and a power-on and power-off detection circuit. The built-in temperature collection circuit is configured to collect a temperature of the chip; the power-on and power-off detection circuit is configured to detect power-on and power-off of the chip; the frequency dividing coefficient operation circuit is configured to calculate, according to the temperature of the chip collected by the built-in temperature collection circuit when the power-on and power-off detection circuit detects that the chip is powered off, a frequency dividing coefficient, and output the frequency dividing coefficient to the frequency dividing circuit; and the frequency dividing circuit is configured to provide, according to the frequency dividing coefficient output by the frequency dividing coefficient operation circuit, a timing pulse for a real-time clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.