Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2007-11-27
2007-11-27
Barnie, Rexford (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S144000
Reexamination Certificate
active
11402803
ABSTRACT:
A switching amplifier of the present invention includes a delta-sigma modulation circuit for processing an input signal by delta-sigma modulation to output a one-bit signal, a delay circuit for delaying the one-bit signal, and a pulse amplifier having a switching device that switches the switching device according to the signal outputted from the delay circuit to perform pulse amplification of the signal outputted from the delay section. The delay time of the delay circuit is variable. With this configuration, enhanced performance is obtained without changing the sampling frequency of the delta-sigma modulation circuit.
REFERENCES:
patent: 6429737 (2002-08-01), O'Brien
patent: 6504427 (2003-01-01), Midya et al.
patent: 6518849 (2003-02-01), Delano
patent: 6856194 (2005-02-01), Nilsson et al.
patent: 2004/0239542 (2004-12-01), Olson et al.
patent: 2006/0187099 (2006-08-01), Fujimoto
patent: 2000-295049 (2000-10-01), None
Logan et al., “Linearization of class d output stages for high-performance audio power amplifier” International Conference on Advanced A-D and D-A Conversion Techniques and thier Applications, Conference Publication No. 393, © IEE, pp. 136-141 (1994), month unknown.
Magrath et al., “Design and implemantation of a FPGA sigma-delta power DAC” Signal Processing Systems, IEEE, pp. 511-521 (1997), month unknown.
Barnie Rexford
Birch & Stewart Kolasch & Birch, LLP
Lauture Joseph
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