System, apparatus and method for hardware and software support of radio functionality

Patent metadata

Field	Value
Publication number	US-11050450-B2
Application number	US-201816028517-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Jul 6, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

In one example, a system includes: a circuit board; at least one tuner adapted on the circuit board to receive and process a radio frequency (RF) signal to output a downconverted modulated signal; a processor adapted on the circuit board to demodulate the downconverted modulated signal, process the demodulated downconverted signal and output an audio signal; a location on the circuit board to receive a demodulator circuit; and a shunt element adapted on the circuit board to direct the downconverted modulated signal from the at least one tuner to the processor when the system does not include the demodulator circuit.

First claim

What is claimed is:

1. A circuit board comprising:
a first physical layout location on the circuit board to receive at least one tuner, wherein the at least one tuner is to receive and process a radio frequency (RF) signal to output a downconverted modulated signal;
a second physical layout location on the circuit board to receive a demodulator circuit;
a third physical layout location on the circuit board to receive a processor; and
a fourth physical layout location on the circuit board to receive a shunt element comprising a zero ohm resistor, wherein:
when the circuit board is implemented in a first system that includes the shunt element and does not include the demodulator circuit, the shunt element is to direct the downconverted modulated signal from the at least one tuner to a first processor adapted to the third physical layout location, the first processor to demodulate the downconverted modulated signal, process the demodulated downconverted signal and output an audio signal; and
when the circuit board is implemented in a second system that does not include the shunt element and includes the demodulator circuit, the circuit board is to route the downconverted modulated signal from the at least one tuner to the demodulator circuit, the demodulator circuit to demodulate the downconverted modulated signal and provide the demodulated downconverted signal to a second processor adapted to the third physical layout location, the second processor to process the demodulated downconverted signal and output the audio signal.

2. The circuit board of claim 1 , wherein when the circuit board is implemented in the first system, the shunt element is to direct the downconverted modulated signal from the at least one tuner to the first processor via first interconnect circuitry of the circuit board.

3. The circuit board of claim 2 , wherein the first interconnect circuitry is formed on one or more layers of the circuit board.

4. The circuit board of claim 1 , wherein when the circuit board is implemented in the second system, the circuit board is to route the downconverted modulated signal from the at least one tuner to the demodulator circuit via second interconnect circuitry of the circuit board.

5. The circuit board of claim 4 , wherein the second interconnect circuitry is formed on one or more layers of the circuit board.

6. The circuit board of claim 1 , further comprising a radio head unit of a vehicle, the radio head unit comprising the circuit board.

7. At least one non-transitory computer readable storage medium comprising instructions that when executed enable a system to:
receive, in a radio stack in execution on a processor, a request for a selected radio station from a radio application;
determine one or more control parameters for a demodulator to demodulate content of the selected radio station; and
determine whether demodulation is to be performed internally to the processor and in response to a determination that the demodulation is to be performed internally to the processor, send the one or more control parameters to an internal processing engine of the processor to execute a software defined demodulator, wherein the processor is incorporated on a circuit board that is designed to accommodate a hardware demodulation circuit coupled to the processor and usable in a first system that includes the hardware demodulation circuit to demodulate the content and usable in a second system that includes the processor to demodulate the content and does not include the hardware demodulation circuit.

8. The at least one non-transitory computer readable storage medium of claim 7 , further comprising instructions that when executed enable the system to send the one or more control parameters to the hardware demodulation circuit, when it is determined that the demodulation is to be performed in the hardware demodulation circuit.

9. The at least one non-transitory computer readable storage medium of claim 8 , further comprising instructions that when executed enable the system to send the one or more control parameters to the hardware demodulation circuit via a physical interface application programming interface of the radio stack, when it is determined that the demodulation is to be performed in the hardware demodulation circuit.

10. The at least one non-transitory computer readable storage medium of claim 7 , further comprising instructions that when executed enable the system to:
dynamically determine to perform the demodulation internally to the processor for demodulating signals of a first modulation scheme; and
dynamically determine to perform the demodulation in the hardware demodulator circuit for demodulating signals of a second modulation scheme.

11. The at least one non-transitory computer readable storage medium of claim 7 , further comprising instructions that when executed enable the system to:
dynamically determine to perform the demodulation internally to the processor when available resources are present in the processor; and
dynamically determine to perform the demodulation in the hardware demodulator circuit when the available resources are not present in the processor.

12. The at least one non-transitory computer readable storage medium of claim 7 , wherein the software defined demodulator comprises demodulator code ported from the hardware demodulation circuit to the radio stack.

13. A system comprising:
at least one antenna to receive at least one radio frequency (RF) signal;
at least one tuner coupled to the at least one antenna to receive and process the at least one RF signal to output a downconverted modulated signal;
a processor coupled to the at least one tuner to demodulate the downconverted modulated signal and to process the demodulated downconverted signal and output an audio signal;
an audio processor coupled to the processor to process the audio signal and output a processed audio signal;
a circuit board, wherein the at least one tuner is adapted on a first layout portion of the circuit board, the processor is adapted on a second layout portion of the circuit board, and the audio processor is adapted on a third layout portion of the circuit board, the circuit board further including a fourth layout portion to which a hardware demodulator circuit may be adapted, the circuit board further including:
first interconnect circuitry to direct the downconverted modulated signal from the first layout portion to the second layout portion; and
second interconnect circuitry to direct the downconverted modulated signal from the first layout portion to the fourth layout portion; and

an interconnection member to cause the downconverted modulated signal to be provided from the at least one tuner to the processor via the first interconnect circuitry.

14. The system of claim 13 , wherein the interconnection member comprises a shunt element.

15. The system of claim 14 , wherein the shunt element comprises a zero ohm resistor.

16. The system of claim 13 , wherein the system comprises a radio head unit of a vehicle.

17. The system of claim 13 , wherein the processor comprises a first processing engine to execute demodulation code to perform the demodulation, the demodulation code provided by a designer of the hardware demodulator circuit.

18. The system of claim 17 , wherein the system further comprises a non-volatile storage to store the demodulation code.

19. The system of claim 18 , wherein the non-volatile storage is to store a radio stack, the radio stack comprising:
a control application programming inter

Assignees

• Silicon Lab Inc

Inventors

• Davis Shawn Michael
• Schnepp Jan
• Blank Aaron Scott

Classifications

• H04B1/16 Primary

  Circuits · CPC title

• H04H2201/60

  characterised in that the receiver comprises more than one tuner · CPC title

• H04H2201/12

  digital radio mondiale [DRM] · CPC title

• H04H40/27

  specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 · CPC title

• H04H2201/11

  digital multimedia broadcasting [DMB] · CPC title