Circuit for and method of assessing an RDS signal

Details Circuit for and method of assessing an RDS signal Circuit for and method of assessing an RDS signal

1995-12-08

1998-03-10

Beausoliel, Jr., Robert W.

Excavating

371 6, 371 379, 371 572, H03M 1300

Patent

active

057269920

ABSTRACT:
A method of assessing the quality and/or existence of a biphase-modulated digital RDS signal in a radio signal broadcast by a radio transmitter and received by a radio receiver equipped for RDS, in which a bit rate clock signal is produced on the receiver side whose bit rate is identical to that of the RDS signal, the bits both of the RDS signal and of the bit rate clock signal are each composed of two half bits, and of the two RDS half bits belonging to an RDS bit, one has a positive phase and the other one has a negative phase, and in which, for quality or existence assessment, the number of positive phase signs and the number of negative phase signs are determined which are each contained in the RDS signal during the half bit periods of a predetermined number of n adjacent half bits of the bit rate clock signal, and the RDS signal, depending on whether or not the ratio between the number of positive phase signs ascertained and the number of negative phase signs ascertained corresponds to a predetermined numerical ratio, is rated as being a signal of good quality or as a signal of poor quality, respectively, and in which an odd integer is used for n, which is greater than 2, and preferably is 3.

REFERENCES:
patent: 3805180 (1974-04-01), Widmer
patent: 3906379 (1975-09-01), Tuhro
patent: 4132975 (1979-01-01), Koike
patent: 4222013 (1980-09-01), Bowers et al.
patent: 4595992 (1986-06-01), Drogin
patent: 4613913 (1986-09-01), Phillips
patent: 4943965 (1990-07-01), Machida et al.
patent: 5001728 (1991-03-01), Fuldner
patent: 5399987 (1995-03-01), Yamamoto et al.
patent: 5450450 (1995-09-01), Lee
patent: 5497126 (1996-03-01), Kosiec et al.
Dietze, Andreas, "SDA 1000 Decodes Radio Data Signals," Siemens Components, vol. 25, No. 3, Jul. 1990, pp. 86-91.
Spezifikation des Radio-Daten-Systems (RDS), Deutsche Fassung EN 50067:1992, DIN (German Institute for Standardization), Beuth Verlag GMBH, Berlin, Feb. 1993, pp. 3-5, 14, 62-64. (Language: Germany).
Specifications of the Radio Data System RDS for VHF/FM Sound Broadcasting, Tech. 3244-E, Technical Centre of the European Broadcasting Union, Bruxelles, Belgium, Mar. 1984, pp.1-12.

Affiliated with

Also associated with

Rating

Circuit for and method of assessing an RDS signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for and method of assessing an RDS signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for and method of assessing an RDS signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-145865