Radio receiver capable of correcting the field strength measurement of a radio signal

Claim 2

A radio receiver for receiving a particular radio signal of a particular frequency with an electric field strength among a plurality of radio signals of different frequencies, said radio receiver including a frequency controller for producing a particular control signal indicative of a local frequency, a detector for detecting said particular radio signal in response to said particular control signal to produce a detected signal, and an electric field strength detector supplied with said detected signal for detecting said electric field strength to produce an electric field strength signal representative of said electric field strength, said radio receiver comprising: correcting signal producing means connected to said frequency controller for producing a correcting signal representative of a control value determined by said particular control signal; and correcting means connected to said electric strength detector and to said correcting signal producing means for correcting said electric field strength signal according to said correcting signal.

Claim 3

A radio receiver as claimed in Claim 1, wherein said correcting signal producing means comprises: a primary memory area for memorizing a plurality of frequency control values in correspondence to a plurality of control signals; and primary reading means connected to said frequency controller and to said primary memory area for reading out of said primary memory area as a primary read-out value one of said frequency control values that corresponds to said particular control signal and for producing as said correcting signal said primary read-out value.

Claim 4

A radio receiver for receiving a particular radio signal of a particular frequency with an electric field strength among a plurality of radio signals of different frequencies, said radio receiver including a frequency controller for producing a particular control signal indicative of a local frequency, a detector for detecting said particular radio signal in response to said particular control signal to produce a detected signal, and an electric field strength detector supplied with said detected signal for detecting said electric field strength to produce an electric field strength signal representative of said electric field strength, said radio receiver comprising: temperature detecting means for detecting an ambient temperature of said radio receiver to produce a detected temperature signal representative of said ambient temperature; correcting signal producing means connected to said temperature detecting means for producing a correcting signal representative of a control value determined by said detected temperature signal; and correcting means connected to said electric strength detector and to said correcting signal producing means for correcting said electric field strength signal according to said correcting signal.

Claim 5

A radio receiver for receiving a particular radio signal of a particular frequency with an electric field strength among a plurality of radio signals of different frequencies, said radio receiver including a frequency controller for producing a particular control signal indicative of a local frequency, a detector for detecting said particular radio signal in response to said particular control signal to produce a detected signal, and an electric field strength detector supplied with said detected signal for detecting said electric field strength to produce an electric field strength signal representative of said electric field strength, said radio receiver comprising: temperature detecting means for detecting an ambient temperature of said radio receiver to produce a detected temperature signal representative of said ambient temperature; correcting signal producing means connected to said temperature detecting means for producing a correcting signal representative of a control value determined by said detected temperature signal; and correcting means connected to said electric strength detector and to said correcting signal producing means for correcting said electric field strength signal according to said correcting signal.

Claim 6

A radio receiver as claimed in Claim 3, wherein said correcting signal producing means comprises: a secondary memory area for memorizing a plurality of frequency control values in correspondence to a plurality of temperature signals; secondary reading means connected to said temperature detecting means and to said secondary memory area for reading out of said secondary memory area as a secondary read-out value one of said temperature control value that corresponds to said detected temperature signal and for producing as said correcting signal said secondary read-out value.