System for high definition radio blending

Pulse or digital communications – Receivers

Reexamination Certificate

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C375S227000, C375S259000

Reexamination Certificate

active

07953183

ABSTRACT:
A system for blending a hybrid radio signal provides reduced volume level transitions during blending from an analog component of the hybrid signal to the digital component by adjusting blend and cross-fade variables, as well as setting a hysteresis mode to prevent undesirable jumping from digital mode back to analog mode sequentially. The system also compensates for digital AM frequency quality issues by adjusting a filter bandwidth when the transceiver blends the AM signal from analog to digital mode.

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patent: 7546088 (2009-06-01), Kroeger et al.
patent: 2001/0005402 (2001-06-01), Nagatani et al.
patent: 2004/0043730 (2004-03-01), Schill et al.
patent: 2004/0235440 (2004-11-01), Toporski et al.
patent: 2004/0261132 (2004-12-01), Shimizu
patent: 2006/0019601 (2006-01-01), Kroeger et al.
patent: 2006/0135098 (2006-06-01), Yarosz et al.
patent: 2006/0227814 (2006-10-01), Iannuzzelli
patent: 2007/0086550 (2007-04-01), Kaise
patent: 2007/0293167 (2007-12-01), Shridhar et al.

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