RADIO BROADCASTING RECEIVER

• US 20010044285A1
• Filed: 07/20/1999
• Published: 11/22/2001
• Est. Priority Date: 07/28/1998
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: HIRAYASU, MASATOSHI
• Granted Patent: US 6,519,450 B2
• Time in Patent Office: Days
• US Class Current: 455/226.1
• CPC Class Codes: H03G 3/001 Digital control of analog signals
• CPC Class Codes: H03G 3/3068 Circuits generating control signals for both R.F. and I.F. stages
• CPC Class Codes: H04B 1/1646 adapted for the reception of stereophonic signals

Abstract

A radio broadcasting receiver having an auto tuning means and a digital signal processor is disclosed, in which the digital signal processor includes a detection means for detecting a maximum value of a received signal output for each of a plurality of broadcasting stations selected during station selection, a storage means for storing a detected maximum value of received signal output of each of the broadcasting stations, a computation means for calculating a mean value of a plurality of stored maximum values of received signal outputs, and a means for calculating an output gain on the basis of a maximum value of a received signal output of a broadcasting station to be received and the mean value, and there is provided a means for conducting a gain control upon station selection according to an output of the digital signal processor so as to instantaneously bring the received signal output closer to the mean value, and which conducts automatically a sound volume adjustment at the time of station selection.

Claims

1. A radio broadcasting receiver having an auto tuning means and a digital signal processor, wherein

the digital signal processor comprises:

a detection means for detecting a maximum value of a received signal output for each of a plurality of broadcasting stations selected during station selection;

a storage means for storing a detected maximum value of received signal output of each of the broadcasting stations;

a computation means for calculating a mean value of a plurality of stored maximum values of received signal outputs; and

a means for calculating an output gain on the basis of a maximum value of a received signal output of a broadcasting station to be received and the mean value, and

there is provided a means for conducting a gain control upon station selection according to an output of the digital signal processor so as to bring a received signal output closer to the mean value.

2. A radio broadcasting receiver according to

claim 1

, wherein the plurality of broadcasting stations are defined as only selected broadcasting stations among receivable broadcasting stations, and the mean value is calculated for those broadcasting stations, and wherein if a selected broadcasting station has newly joined, the mean value is recalculated.

3. A radio broadcasting receiver according to

claim 1

, wherein the storage means can update the storage of the plurality of maximum values of received signal outputs as occasion demands, and the update time can be freely set by a user.