US 4,723,302 A · Method and apparatus for determining channel reception of a receiver

Abstract

A method and apparatus for identifying a channel to which a receiver is tuned sequentially detects a signal of the receiver and stores a characteristic value of the detected signal for a predefined sequence of frequencies. The stored values corresponding to the predetermined channels of the receiver are identified and assigned a predetermined value. The stored values corresponding to each of a plurality of harmonic frequencies of the predetermined channels are identified and assigned one of a plurality of different predetermined values. A total assigned value is then calculated for each of the predetermined channels with the corresponding values for the identified harmonic frequencies thereof. The calculated total values are then compared to identify a maximum value corresponding to the channel to which the receiver is tuned.

Claims20

Dependent claims

A method for determining the channel of a plurality of predetermined channels to which a receiver is tuned comprising the steps of:

sequentially detecting a signal of the receiver and storing a characteristic value of the detected signal for a predefined sequence of frequencies;
identifying stored values corresponding to the predetermined channels and assigning a predetermined value;
identifying stored values corresponding to each of a plurality of harmonic frequencies of the predetermined channels and assigning one of a plurality of predetermined values, wherein said plurality of predetermined values correspond to separately determined values according to each of the plurality of harmonic frequencies;
calculating a total assigned value for each of the predetermined channels with said corresponding values for identified harmonic frequencies thereof;
and
comparing said calculated total assigned values to identify a maximum value.

3 more elements

Apparatus for determining the channel of a plurality of predetermined channels to which a receiver is tuned, each of the predetermined channels having a fundamental frequency comprising:

means for sequentially detecting a signal of the receiver and means for storing a characteristic value of the detected signal for a predefined sequence of the frequencies;
means for identifying stored values corresponding to the predetermined channels and means for assigning a predetermined value;
means for identifying stored values corresponding to each of a plurality of harmonic frequencies of the predetermined channels and means for assigning one of a plurality of predetermined values, wherein said plurality of predetermined values correspond to separately determined values according to each of the plurality of harmonic frequencies;
means for calculating a total assigned value for each of the predetermined channels with said corresponding values for identified harmonic frequencies thereof;
and
means for comparing said calculated total assigned values to identify a maximum value.

3 more elements

Apparatus for determining the channel of a plurality of predetermined channels to which a receiver is tuned, each of the predetermined channels having a fundamental frequency comprising:

tuning means for generating a predefined sequence of different frequency signals, said generated signals including the frequencies of the predetermined channels and a plurality of harmonic frequencies of each of the predetermined channels;
means responsive to said tuning means for detecting a signal of a local oscillator of the receiver;
means for storing a characteristic value of said detected signals;
means for identifying stored values corresponding to the predetermined channels and means for assigning a predetermined value;
means for identifying stored values corresponding to each of the plurality of harmonic frequencies of the predetermined channels and means for assigning one of a plurality of predetermined values, wherein said plurality of predetermined values correspond to separately determined values according to each of the plurality of harmonic frequencies;
means for calculating a total assigned value for each of the predetermined channels with said corresponding values for identified harmonic frequencies thereof;
and
means for comparing said calculated total assigned values to identify a maximum value.

5 more elements

Dependencies are inferred from the claim text.

Method and apparatus for determining channel reception of a receiver

Life of this patent

Method and apparatus for determining channel reception of a receiver

Life of this patent

Abstract

Claims20