Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1997-02-18
1999-01-26
Williams, Howard L.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341110, 341144, H03M 100
Patent
active
058643117
ABSTRACT:
An electronic method and apparatus for signal encoding and decoding to provide ultra low distortion reproduction of analog signals, while remaining compatible with industry standardized signal playback apparatus not incorporating the decoding features of the invention, and wherein the improved system provides an interplay of gain, slew rate and wave synthesis operations to reduce signal distortions and improve apparent resolution, all under the control of concealed control codes for triggering appropriate decoding signal reconstruction compensation complementing the signal analysis made during encoding. In addition, signals lacking the encoding process features of the invention are likewise compatible with playback decoders which do embody the invention, to provide some overall restoration enhancement.
REFERENCES:
patent: 3919657 (1975-11-01), Howlett et al.
patent: 3999129 (1976-12-01), Kasson
patent: 4187466 (1980-02-01), Kasson et al.
patent: 4219880 (1980-08-01), Nichols
patent: 4472747 (1984-09-01), Schwartz
patent: 4546342 (1985-10-01), Weaver et al.
patent: 4618851 (1986-10-01), Watanabe
patent: 4700362 (1987-10-01), Todd et al.
patent: 4710747 (1987-12-01), Holland
patent: 4788685 (1988-11-01), Sako et al.
patent: 4831464 (1989-05-01), Chijiiwa
patent: 4849957 (1989-07-01), Suzuki
patent: 4903020 (1990-02-01), Wermuth et al.
patent: 4903301 (1990-02-01), Kondo et al.
patent: 4908722 (1990-03-01), Sonobe
patent: 4914438 (1990-04-01), Nakahashi et al.
patent: 4933635 (1990-06-01), Beard
patent: 4933675 (1990-06-01), Beard
patent: 4940977 (1990-07-01), Mandell
patent: 5055845 (1991-10-01), Ridkosil
patent: 5068899 (1991-11-01), Ellis et al.
patent: 5089820 (1992-02-01), Gorai et al.
patent: 5146547 (1992-09-01), Veldhuis et al.
John Vanderkooy & Stanley P. Lipshitz, Dither In Digital Audio, 8013 Journal of the Audio Engineering Society 35 (1987) Dec., No. 12, New York, New York.
Johnson Keith O.
Pflaumer Michael W.
Pacific Microsonics, Inc.
Williams Howard L.
LandOfFree
Systems for enhancing frequency bandwidth 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 for enhancing frequency bandwidth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems for enhancing frequency bandwidth will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1453394