1. A method comprising:
receiving on a mobile electronic device, at a frequency, a transmission of an encoded audio signal having encoded information on a subcarrier of the frequency;
processing the encoded audio signal on the mobile electronic device to extract the encoded information from the encoded audio signal; and
enabling a promotional opportunity on the mobile electronic device based on extracting the encoded information.
2. The method of claim 1, wherein the encoded information is a trigger, the method further comprising:
selecting stored data on the mobile electronic device based on processing the encoded audio signal, the stored data stored on the mobile electronic device prior to processing the encoded audio signal,
wherein the promotional opportunity is based on selecting the stored data.
3. The method of claim 2, wherein the stored data includes an audio signal, the audio signal being a different audio signal than the encoded audio signal, and
wherein enabling the promotional opportunity comprises reproducing the audio signal.
4. The method of claim 1, wherein the encoded information is data.
5. The method of claim 3, wherein the data includes a classification code, the classification code identifying a category of the promotional opportunity.
6. The method of claim 4, further comprising:
determining whether the classification code matches a user preference stored on the mobile electronic device,
wherein enabling the promotional opportunity is based on a determination that the classification code matches the user preference.
7. The method of claim 1, further comprising:
automatically tuning the mobile electronic device to the frequency,
wherein receiving the transmission is based on automatically turning to the frequency.
8. The method of claim 1, further comprising:
visually displaying the promotional opportunity on a display of the mobile electronic device in response to enabling the promotional opportunity.
9. The method of claim 1, further comprising:
receiving a user initiation request on the mobile electronic device from a user of the mobile electronic device,
wherein receiving the transmission is based on receiving the user initiation request.
10. The method of claim 1, wherein the subcarrier of the frequency is 57 kHz.
11. The method of claim 1, wherein the mobile electronic device is a card.
12. The method of claim 1, wherein the subcarrier is a Radio Broadcast Data System (RBDS) subcarrier.
13. The method of claim 1, wherein the promotional opportunity includes an electronic coupon.
14. The method of claim 1, wherein the promotional opportunity includes a verification of extraction of the encoded information.
15. The method of claim 14, wherein the verification is an audible verification.
16. The method of claim 1, wherein the promotional opportunity includes four blocks of data.
17. The method of claim 16, wherein a block of the four blocks identifies a data type as group two radio text.
18. The method of claim 1, further comprising:
timestamping the promotional opportunity based on receiving the transmission.
19. A method comprising:
receiving on a mobile electronic device, at a frequency, a transmission of an encoded audio signal having a trigger encoded on a subcarrier of the frequency;
processing the encoded audio signal on the mobile electronic device to extract the encoded information from the encoded audio signal;
selecting a stored audio signal on the mobile electronic device based on processing the encoded audio signal, the stored audio signal stored on the mobile electronic device prior to processing the encoded audio signal, the stored audio signal being a different audio signal than the encoded audio signal; and
reproducing the stored audio signal on the mobile electronic device.
20. The method of claim 19, further comprising:
receiving a user frequency selection; and
turning to the frequency is based on receiving the user frequency selection,
wherein receiving the transmission is based on turning to the frequency.
21. The method of claim 19, wherein the mobile electronic device is a replica statute of a character.
22. A computer-readable storage medium comprising instructions, which when executed by a processor, cause the processor to perform the following operations:
receive on a mobile electronic device, at a frequency, a transmission of an encoded audio signal having encoded information on a subcarrier of the frequency;
process the encoded audio signal on the mobile electronic device to extract the encoded information from the encoded audio signal; and
enable a promotional opportunity on the mobile electronic device based on extracting the encoded information.
23. A computer-readable storage medium comprising instructions, which when executed by a processor, cause the processor to perform the following operations:
receive on a mobile electronic device, at a frequency, a transmission of an encoded audio signal having a trigger encoded on a subcarrier of the frequency;
process the encoded audio signal on the mobile electronic device to extract the encoded information from the encoded audio signal;
select a stored audio signal on the mobile electronic device based on processing the encoded audio signal, the stored audio signal stored on the mobile electronic device prior to processing the encoded audio signal, the stored audio signal being a different audio signal than the encoded audio signal; and
reproduce the stored audio signal on the mobile electronic device.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An amplifier device, said amplifier device comprising:
amplifier means for amplifying a radio-frequency input signal RFin,
a controllable feedback loop for adjusting a gain and a bias voltage applied to the amplifier means for adjusting a current determining a noise level, the feedback loop and the bias voltage being arranged to provide at least two different modes, a first mode providing high gain and low noise for handling weak signals and a second mode providing low-gain power splitting for handling strong signals.
2. An amplifier device as claimed in claim 1, wherein the amplifier device comprises mode selection means, and the feedback loop is connected between an output and an input of the amplifier means, the feedback loop comprising at least a first resistor and a second resistor connected in parallel to each other, and wherein the second resistor is connected in series with a switch controlled by the mode selection means, which also control the bias voltage applied to the amplifier means.
3. An amplifier device as claimed in claim 1, further comprising mode selection means arranged to control the feedback loop and the bias voltage to provide a third mode providing high gain and high current.
4. A product comprising the amplifier device as claimed in claim 1 and means for selecting the at least two different modes.
5. A method of amplifying a radio-frequency signal, the method comprising the step of:
amplifying the signal in at least a first mode and a second mode by amplifier means having at least two modes, said first mode providing high gain and low noise for weak signals, and said second mode providing low-gain power splitting for handling strong signals,
wherein the amplifier means is turned on in both the first mode and second mode to provide a higher gain and lower noise figure in the first mode, and a lower gain and higher noise figure in the second mode.
6. A method as claimed in claim 5, further comprising the step of:
amplifying the signal in a third mode, said third mode providing high gain and high current for medium signals.
7. The amplifier device of claim 1, wherein the amplifier means is an operational amplifier.
8. The amplifier device of claim 1, wherein the high gain and the low-gain are both greater than unity.
9. The amplifier device of claim 1, wherein high gain and the low-gain are both greater than 10 dB.
10. The method of claim 6, wherein the high gain and the low-gain are both greater than unity.
11. The method of claim 6, wherein the high gain and the low-gain are both greater than 10 dB.
12. An amplifier device, comprising:
an amplifier having a first input adapted to receive a radio frequency signal, a second input, and an output adapted to output an amplified RE signal;
a feedback path extending between the output of the amplifier and the input of the amplifier, the feedback path having an impedance that is at least selectable between a first impedance value and a second impedance value;
a bias voltage circuit connected to the second input of the amplifier, the bias voltage circuit being adapted to supply a bias voltage to the second input of the amplifier that is at least selectable between a first bias voltage value and a second bias voltage value; and
a mode selection means adapted to select the impedance of the feedback path and to select the bias voltage to provide at least two different modes, a first mode providing high gain and low noise for handling weak signals, and a second mode providing low-gain power splitting for handling strong signals.
13. The amplifier device of claim 12, wherein the mode selection means is further adapted to provide a third mode providing high gain and high current.
14. The amplifier device of claim 12, wherein the amplifier is an operational amplifier.
15. The amplifier device of claim 12, wherein the feedback path includes at least a first resistor and a second resistor connected in parallel to each other, and wherein the second resistor is connected in series with a switch controlled by the mode selection means.
16. The amplifier device of claim 15, wherein the bias voltage circuit includes:
a third resistor connected between a bias supply voltage and the second input of the amplifier;
a fourth resistor connected to ground; and
a second switch connected between the second input of the amplifier and the second resistor.
17. The amplifier device of claim 12, wherein the bias voltage circuit includes:
a first resistor connected between a bias supply voltage and the second input of the amplifier;
a second resistor connected to ground; and
a switch connected between the second input of the amplifier and the second resistor.