Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
2004-03-19
2010-06-01
Chin, Vivian (Department: 2614)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
C713S503000, C341S061000
Reexamination Certificate
active
07729790
ABSTRACT:
Systems and methods for ensuring proper phase alignment of audio signals which are processed by separate hardware channels in an audio amplification system. In one embodiment, the phase alignment is controlled by determining the number of audio data samples which are stored in the input buffers of multiple audio amplification units and controlling reads from the input buffers to minimize the difference between an actual read-write pointer differential and a target differential. In a master unit, the target differential is a predetermined target value corresponding to a desired delay in the buffer. The actual pointer differential of the master unit is passed to one or more slave units. The actual pointer differential of the master unit is used as the target differential of the slave units. The pointer differentials of the slave units are thereby driven to track the pointer differential of the master unit, keeping the units synchronized.
REFERENCES:
patent: 5390180 (1995-02-01), Reilly
patent: 5778218 (1998-07-01), Gulick
patent: 5918073 (1999-06-01), Hewitt
patent: 6294954 (2001-09-01), Melonson
patent: 6389139 (2002-05-01), Curtis et al.
patent: 6429737 (2002-08-01), O'Brien
patent: 6683494 (2004-01-01), Stanley
patent: 7099426 (2006-08-01), Cory et al.
patent: 7302396 (2007-11-01), Cooke
patent: 2002/0122518 (2002-09-01), Yasuda et al.
patent: 2003/0042976 (2003-03-01), Midya et al.
Andersen Jack B.
Chieng Daniel L. W.
Hand Larry E.
Kost Michael A.
Taylor Wilson E.
Chin Vivian
D2Audio Corporation
Fliesler & Meyer LLP
Sellers Daniel R
LandOfFree
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