Mobile broadcast receiver with channels selectable according to reception location

US4476582A · kind A · utility

Assignee

• Blaupunkt-Werke GmbH · DE

Inventors

• Karl-Peter Strauss · Schifferstadt, DE
• Jurgen Kasser · Bad Salzdetfurth, DE

Key dates

• Filing date: Apr 13, 1983
• Grant date: Oct 9, 1984
• Expiry date: Apr 13, 2003

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03J1/0066
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

The location coordinates, as well as the transmitting station frequencies, of stations that broadcast the same programs by network arrangements or otherwise, are stored so that when a particular program (network) is selected, all these stations broadcasting the same program as a station being listened to which are not more than a prescribed maximum distance from the station being listened to, may be listed in a table in a working store. While a particular station is being listened to, therefore, continuous checking of the station being listened to with other stations broadcasting the same program for relative reception quality can be carried out automatically while a station is being listened to in a moving vehicle, without taking into account the signals broadcast by stations that are too far away. As soon as some other station broadcasting the same program is found to provide better reception, it is automatically tuned in, and from then on the distance criterion is referred to the location of the new station, a new set of stations for signal comparison is selected and the comparative signal checking process is continued automatically.