Detector of carrier loss in a fax modem

Details Detector of carrier loss in a fax modem Detector of carrier loss in a fax modem

1995-09-12

1998-09-29

Chin, Stephen

Pulse or digital communications

Receivers

Angle modulation

375317, 375338, 358443, H04L 2714, H04L 2716, H04L 2722

Patent

active

058155341

ABSTRACT:
A detector of a carrier loss in a modem receiver of a fax transmission of a document, of the type includes a first calculator of the receive signal and a first comparator of this energy with respect to a threshold. The detector further includes means for adapting said threshold between each page of the transmitted document.

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French Search Report from French Patent Application Serial No. 94 11212, filed Sep. 14, 1994.
Patent Abstracts of Japan, vol. 018, No. 218 (E-1539), Apr. 19, 1994 & JP-A-06 014062 (Mitsubishi Electric Corp.).
Patent Abstracts of Japan, vol. 012, No. 207 (E-621). Jun. 14, 1988 & JP-A-63 006935 (Toshiba Corp.).

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