Method for the field strength dependent analysis of radio inform

Details Method for the field strength dependent analysis of radio inform Method for the field strength dependent analysis of radio inform

1992-11-10

1994-10-11

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551613, 4551851, 4551861, H04B 1702

Patent

active

053555260

ABSTRACT:
The invention pertains to a method for the field strength-dependent analysis of radio information for vehicles with a radio receiver unit (I), comprising a scanner-receiver (1), which supplies a radio data signal (RDS) as an identification sign for a specific transmission program through a radio data signal program identification decoder (3). The currently received field strength appears at the output of an analog-to-digital converter (4), and the currently received frequency (f) is measured by a frequency counter (5). The scanner-receiver (1) is periodically scanned, and the RDS sign, field strength (FS) and frequency (f) are linked in a microcomputer unit (II) for identification of the received transmitters and for assignment of the received field strength to the corresponding transmitter. This assignment is used to form current field-strength profile, which depends on the receiving location. In the arithmetic-logic unit (9) of the microcomputer system (II), the current field-strength profile is compared with reference field-strength profiles from a reference memory (8, 11). When they are the same, an output unit (10) is supplied with the information that is assigned to the reference field-strength profile.

REFERENCES:
patent: 5220682 (1993-06-01), Tomohiro

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