Digital signal processing apparatus and method

Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C708S300000

Reexamination Certificate

active

06941333

ABSTRACT:
A normalizer normalizes the power of a dither signal calculated by a power calculator based on the average power of a PCM signal in the range of 18 kHz to 20 kHz, wherein the average power is calculated by the power calculator. An oversampling processor oversamples the PCM signal with a quantization frequency of 44.1 kHz and a quantization word length of 16 bits, wherein the PCM signal is inputted from an input terminal at a sampling frequency of 2×44.1 kHz, and then supplies an output of the oversampling process to an adder. The adder adds the normalized output from the normalizer to the oversampling output from the oversampling processor, and then supplies the addition output to an oversampling processor.

REFERENCES:
patent: 5212659 (1993-05-01), Scott et al.
patent: 5541866 (1996-07-01), Sato et al.
patent: 5719571 (1998-02-01), Akune et al.
patent: 5786778 (1998-07-01), Adams et al.
patent: 5892694 (1999-04-01), Ott
patent: 5903857 (1999-05-01), Behrens et al.
patent: 6255975 (2001-07-01), Swanson
Adrian et al., A two-path bandpass delta-sum modulartor for digital IF extraction at 20 MHz, Dec. 1997, IEEE Journal of solid-state circuits, vol. 32, No. 12, pp. 1920-1934.
Krzysztof et al., Effects of noise dither signals on differential linearity and effective resolution of sigma-delta A/C converters in measuring applications, May 1998, IEEE Instrumentation and Measurement Technology Conference, pp. 1229-1232.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Digital signal processing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital signal processing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital signal processing apparatus and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3437937

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.