Coded data generation or conversion – Digital code to digital code converters – To or from differential codes
Reexamination Certificate
2008-01-01
2008-01-01
Jeanglaude, Jean Bruner (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from differential codes
C341S155000, C341S143000, C375S243000
Reexamination Certificate
active
07315264
ABSTRACT:
Systems and methods implemented in a multi-bit digital noise shaper for reducing or eliminating undesirable transient response when the noise shaper exits a clipping state. In one embodiment, the noise shaper includes a quantizer, a filter, and a filter control unit that detects clipping in the quantizer and dynamically adjusts the allowable range of the internal state values of the filter. In one embodiment, a clipping mechanism is provided for each state value within the filter to clip the state value if it exceeds a corresponding clipping level. The clipping level for each state value is lower when the quantizer is clipping, and higher when the quantizer is not clipping. The clipping level for each state value may be transitioned either immediately or gradually from a current level to a target level (which is lower when the quantizer is clipping, and higher when the quantizer is not clipping.)
REFERENCES:
patent: 5649054 (1997-07-01), Oomen et al.
patent: 6972705 (2005-12-01), Fei et al.
patent: 2004/0017854 (2004-01-01), Hansen et al.
D2Audio Corporation
Jeanglaude Jean Bruner
Law Offices of Mark L. Berrier
LandOfFree
Systems and methods for controlling transient response in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Systems and methods for controlling transient response in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems and methods for controlling transient response in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2800778