System, apparatus and method for providing remote tuner options in a vehicle entertainment system

Patent metadata

Field	Value
Publication number	US-11637985-B2
Application number	US-202017075008-A
Country	US
Kind code	B2
Filing date	Oct 20, 2020
Priority date	Sep 11, 2019
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

In one example, a remote tuner module includes: a first tuner to receive, process and demodulate a first radio frequency (RF) signal to output an analog audio signal, and to receive and process a second RF signal to output a first downconverted modulated signal; a second tuner to receive and process the second RF signal to output a second downconverted modulated signal; a demodulator circuit coupled to the first and second tuners to demodulate and link the first and second modulated signals, to output a linked demodulated signal. The remote tuner module may further include a gateway circuit coupled to at least the demodulator circuit to output the analog audio signal and the linked demodulated signal.

First claim

What is claimed is:

1. At least one non-transitory computer readable storage medium comprising instructions that when executed enable a system to:
receive, in a processor of a head unit of a vehicle entertainment system, a user selection of a requested radio band and channel;
determine whether a remote tuner module coupled to the head unit is to be configured for audio only output that does not include digital I/Q data streams;
in response to determining that the remote tuner module coupled to the head unit is not to be configured for audio only output that does not include digital I/Q data streams, send control information to cause the remote tuner module to output one or more digital I/Q data streams representing one or more radio frequency signals;
receive the one or more digital I/Q data streams in the processor from the remote tuner module, via a link that couples the remote tuner module and the head unit;
demodulate the one or more digital I/Q data streams in the processor into a demodulated audio stream, via execution of a software defined demodulator; and
output the demodulated audio stream to an audio processor of the head unit.

2. The at least one computer readable storage medium of claim 1 , further comprising instructions that when executed enable the system to send the control information to the remote tuner module via the link, the link comprising a digital bus.

3. The at least one computer readable storage medium of claim 1 , further comprising instructions that when executed enable the system to link two of the one or more digital I/Q data streams in the processor, via the execution of the software defined demodulator.

4. The at least one computer readable storage medium of claim 1 , further comprising instructions that when executed enable the system to send the control information to the remote tuner module when the remote tuner module does not include a demodulator.

5. The at least one computer readable storage medium of claim 1 , further comprising instructions that when executed enable the processor to further receive and process a demodulated analog audio stream representing another radio frequency signal from the remote tuner module, the demodulated analog audio stream demodulated by the remote tuner module instead of the head unit.

6. The at least one computer readable storage medium of claim 5 , further comprising instructions that when executed enable the processor to blend the already-demodulated analog audio stream and the demodulated audio stream.

7. A method of operating a head unit of a vehicle entertainment system, comprising:
receiving, in a processor of a head unit of a vehicle entertainment system, a user selection of a requested radio band and channel;
determining whether a remote tuner module coupled to the head unit is to be configured for audio-only output that does not include digital I/Q data streams;
in response to determining that the remote tuner module coupled to the head unit is not to be configured for audio-only output that does not include digital I/Q data streams, send control information to cause the remote tuner module to output one or more digital I/Q data streams representing one or more radio frequency signals;
receiving the one or more digital I/Q data streams in the processor from the remote tuner module, via a link that couples the remote tuner module and the head unit;
demodulating the one or more digital I/Q data streams in the processor into a demodulated audio stream, via execution of a software defined demodulator; and
outputting the demodulated audio stream to an audio processor of the head unit.

8. The method of claim 7 , further comprising sending the control information to the remote tuner module via the link, the link comprising a digital bus.

9. The method of claim 7 , further comprising linking two of the one or more digital I/Q data streams in the processor, via the execution of the software defined demodulator.

10. The method of claim 7 , further comprising sending the control information to the remote tuner module when the remote tuner module does not include a demodulator.

11. The method of claim 7 , further comprising receiving and processing in the processor a demodulated analog audio stream representing another radio frequency signal from the remote tuner module, the demodulated analog audio stream demodulated by the remote tuner module instead of the head unit.

12. The method of claim 11 , further comprising blending the analog audio stream and the demodulated audio stream in the processor.

13. A vehicle entertainment system comprising:
a remote tuner module; and
a head unit comprising a processor and an audio processor coupled to the processor, the head unit coupled to the remote tuner module via a link, the processor of the head unit configured to: receive a user selection of a requested radio band and channel and; determine whether a remote tuner module coupled to the head unit is to be configured for audio only output that does not include digital I/Q data streams; in response to determining that the remote tuner module is not to be configured for audio-only output that does not include digital I/Q data streams, send control information to the remote tuner module to cause the remote tuner module to output one or more digital I/Q data streams representing one or more radio frequency signals; receive the one or more digital I/Q data streams; demodulate the one or more digital I/Q data streams into a demodulated audio stream, via execution of a software defined demodulator; and output the demodulated audio stream to the audio processor.

14. The vehicle entertainment system of claim 13 , wherein the link comprises a digital bus.

15. The vehicle entertainment system of claim 13 , wherein the link comprises a wireless link.

16. The vehicle entertainment system of claim 13 , wherein the processor is to link two of the one or more digital I/Q data streams, via the execution of the software defined demodulator.

17. The vehicle entertainment system of claim 13 , wherein head unit is to send the control information to the remote tuner module when the remote tuner module does not include a demodulator.

18. The vehicle entertainment system of claim 13 , wherein the remote tuner module, further in response to the control information, is to output a demodulated analog audio stream representing another radio frequency signal, the demodulated analog audio stream demodulated by the remote tuner module instead of the head unit.

19. The vehicle entertainment system of claim 18 , wherein the processor is to blend the analog audio stream and the demodulated audio stream.

Assignees

• Skyworks Solutions Inc

Inventors

• Gaxiola-Sosa Jesus Efrain
• Blank Aaron
• Manthiram Kathir
• Davis Shawn
• Schnepp Jan
• Morris Jacob
• Szmulewicz Damian

Classifications

• H04B1/406

  with more than one transmission mode, e.g. analog and digital modes · CPC title

• H04N21/41422

  located in transportation means, e.g. personal vehicle (arrangements specially adapted for transportation systems in broadcast systems H04H20/62) · CPC title

• H04B7/2637 Primary

  for logical channel control · CPC title

• H04N5/455 Primary

  Demodulation-circuits · CPC title

• H04B1/0003

  Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain (digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00) · CPC title