Low-power baud rate generator including two oscillators
US5398007A · kind A · utility
13Cited by
1References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1994 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Jul 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A baud rate generator has a first oscillator that generates a first clock signal, and a second oscillator that generates a second clock signal with higher frequency but lower frequency accuracy. The first oscillator employs an external resonator but the second does not. The baud rate generator uses the first clock signal to measure the frequency of the second clock signal, then determines a division ratio by which to divide the frequency of the second clock signal, then divides the second clock signal by this division ratio to generate a crock signal for use in serial communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.