Method and system for efficient quantization in DAC and ADC...

Details Method and system for efficient quantization in DAC and ADC... Method and system for efficient quantization in DAC and ADC...

2007-11-06

2007-11-06

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Transceivers

Modems

C375S260000, C709S247000

Reexamination Certificate

active

10162416

ABSTRACT:
An ADSL modem includes a modulator unit with an output analog expander and/or a demodulator unit with an input analog compressor. The modulator unit further includes (a) a first DSP engine outputting a plurality of k-bit words to a non-linear discrete compressor, which compresses the words into plurality of m-bit words wherein m<k; and (b) a digital-to-analog unit that converts the m-bit words into an analog signal for input to the analog expander.

REFERENCES:
patent: 4841299 (1989-06-01), Weaver
patent: 5319634 (1994-06-01), Bartholomew et al.
patent: 5550893 (1996-08-01), Heidari
patent: 5790632 (1998-08-01), Antonio et al.
patent: 6044107 (2000-03-01), Gatherer et al.
patent: 6292840 (2001-09-01), Blomfield-Brown et al.
patent: 6404763 (2002-06-01), Renucci et al.
patent: 6560225 (2003-05-01), Czajkowski et al.
patent: 2002/0024998 (2002-02-01), Cooper
patent: 2003/0067990 (2003-04-01), Bryant
The all digital loop: benefits of an integrated voice-data access network Ploumen, F.M.; De Clerq, L.; Communication Technology Proceedings, 2000. WCC—ICCT 2000. International Conference on vol. 1, Aug. 21-25, 2000 pp. 16-21 vol. 1.
Voice delay considerations for DSL multimedia access network design and operation Wright, S.; Vernon, A.J.; Whited, A.;Multimedia Services Access Networks, 2005. MSAN '05. 2005 1st International Conference onJun. 13-15, 2005 pp. 111-115.
Voice over DSL Grant, M.; Multimedia in the Local Loop—the DSL Seminar (Ref. No. 2000/022), IEE Jan. 26, 2000 pp. 3/1-3/15.

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