Frequency correcting method for cellular phone terminal
US7046968B2 · kind B2 · utility
0Cited by
14References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2002 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Sep 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
When a cellular phone terminal is powered on, it immediately receives a reference signal (non-modulated reference frequency signal for correcting a crystal oscillation circuit) for correcting the reception frequency of a radio signal transmitted from a base station at all times, and corrects the error of the reception frequency on the basis of the reference signal received. After the error of the reception frequency is corrected, the cellular phone terminal makes normal communications with the base station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.