Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2004-12-07
2008-08-05
Donovan, Lincoln (Department: 2837)
Music
Instruments
Electrical musical tone generation
C084S653000, C341S022000, C341S027000, C345S168000, C700S084000
Reexamination Certificate
active
07408107
ABSTRACT:
A keyboard provides an analog sound signal for a sound producing device. The keyboard includes an interface circuit that couples the keyboard to a digital sound source through a universal serial bus (USB) cable. The keyboard further includes an audio rendering circuit that receives digital sound samples from the interface circuit and converts the digital sound samples to an analog sound signal and a connector coupled to the audio rendering circuit that is configured to couple the analog sound signal to a sound producing device.
REFERENCES:
patent: 5717430 (1998-02-01), Copland et al.
patent: 6170024 (2001-01-01), Wakeland et al.
patent: 6268806 (2001-07-01), Frager et al.
patent: D458606 (2002-06-01), Tritschler et al.
patent: 6682235 (2004-01-01), Monney et al.
patent: 6935797 (2005-08-01), Sim
patent: 7046234 (2006-05-01), Ozolins
patent: 7109890 (2006-09-01), Sim
patent: 2005/0117712 (2005-06-01), De Sousa
patent: 2007/0091551 (2007-04-01), Chen et al.
Donovan Lincoln
Hewlett--Packard Development Company, L.P.
Warren David S.
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