Radio signal receiver

US7305225B2 · kind B2 · utility

Assignee

• HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH · DE

Inventors

• Christoph Benz · Ohlsbach, DE
• Stefan Gierl · Karlsruhe, DE
• Andreas Koerner · Karlsruhe, DE

Key dates

• Filing date: Jul 9, 2002
• Grant date: Dec 4, 2007
• Expiry date: Jul 30, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D30/70
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A motor vehicle entertainment system includes a radio receiver and a control unit. The control unit receives a first status signal indicative of whether or not a motor vehicle door has been unlocked and initiates the application of power to the radio receiver upon the first status signal indicating that the door has been unlocked. Upon the application of power to the radio receiver, the radio receiver scans through a selected frequency spectrum to identify valid frequencies and their associated broadcast identifying information and stores a list of the valid frequencies and their associated broadcast identifying information in a memory device associated with the radio receiver. The radio receiver acquires and records information on a plurality of transmitters initially in a standby mode before it switches over to an operating mode. The radio receiver has a device for receiving an ON command from the user and switches from the standby mode to the operating mode when the ON command is received. The radio receiver may begin to operate before the ON command is input by the user, and independently of this input. If the radio receiver begins to operate in sufficient time before input of …