Radio frequency receiver with a device to display the programme identification of broadcasters.

摘要

In a radio-frequency receiver with a device for indicating the transmitter names, transmitters are also to be indicated which do not radiate any additional signals containing the identification data. For this reason, tables in which each transmitter site is assigned the associated frequency, the transmitter name and a list of those transmitters which can be received at this transmitter site are stored in a digital memory. Furthermore, there is a microprocessor which - tunes the receiver to a strong transmitter radiating additional signals containing the identification data (RDS transmitter) and determines its frequency and its name, - determines from a first and from a second table the transmitter site belonging to the frequency and the name of this RDS transmitter, - determines from a third table all sites assigned to the site of this RDS transmitter, - finds from the first table among these sites the site of which the associated frequency corresponds to that of the unknown transmitter, and -determines from the second table the name belonging to this site and supplies it to the display device.