Title:
Receiver tuning
Document Type and Number:
WIPO Patent Application WO1998013934
Kind Code:
A3
Abstract:
In a tuning method, a commanded-tuning loop (CTL) tunes a receiver (REC) on the basis of a tuning command (TC) and a self-tuning loop (STL) tunes the receiver on the basis of a reception signal. To resolve a tuning conflict between the loops, one of the loops (CTL or STL) is calibrated (CAL) with respect to the other loop (STL or JKR CTL). Preferably, the commanded-tuning loop (CTL) is in an active state when the self-tuning loop (STL) is in-lock. This allows good reception under dynamic reception conditions.
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Inventors:
KIANUSH KAVEH (NL)
MEEUWIS JOHANNES CORNELIS MARI (NL)
MEEUWIS JOHANNES CORNELIS MARI (NL)
Application Number:
PCT/IB1997/001016
Publication Date:
May 28, 1998
Filing Date:
August 21, 1997
Export Citation:
Assignee:
PHILIPS ELECTRONICS NV (NL)
PHILIPS NORDEN AB (SE)
PHILIPS NORDEN AB (SE)
International Classes:
H03J1/00; H03J7/22; H03J5/00; H03J7/00; (IPC1-7): H03J1/00
Foreign References:
| US5446416A | 1995-08-29 | |||
| US5450621A | 1995-09-12 | |||
| EP0698970A1 | 1996-02-28 | |||
| US4078212A | 1978-03-07 |
Other References:
1996 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE..., February 1996, (New York, USA), KIANUSH K., "A Complete AM/FM Stereo Receiver and Tuning System on a Single Chip", page 256.
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