Adaptive signal tuning for digital radio receivers operating...

Details Adaptive signal tuning for digital radio receivers operating... Adaptive signal tuning for digital radio receivers operating...

2008-04-30

2009-06-30

Burd, Kevin M (Department: 2611)

Pulse or digital communications

Receivers

Reexamination Certificate

active

07555065

ABSTRACT:
A radio receiver for receiving analog signals in a Frequency Modulation (FM) band includes a hybrid/all digital decoder that decodes a digital audio signal. An analog FM demodulator generates a demodulated analog audio signal. The analog FM demodulator demodulates the analog audio signal while the hybrid/all digital decoder simultaneously attempts to acquire synchronization. The digital radio receiver outputs the demodulated analog audio signal until synchronization is acquired.

REFERENCES:
patent: 5598430 (1997-01-01), Hachisuka et al.
patent: 2-154534 (1990-06-01), None
Faller/Juang/Kroon/Lou/Ramprashad/Sundberg, “Technical Advances in Digital Audio Radio Broadcasting”, Proceedings of the IEEE, vol. 90, No. 8, Aug. 2002, pp. 1303-1333.
iBiquity Digital Corporation, HD Radio™ Air Interface Description—Layer 1 FM, Rev. C., Mar. 7, 2003, pp. 1-106.

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