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专利名称：Detector for the presence of a transmission
in a modem
发明人：GLASS, WILLIAM申请号：EP95410102.8申请日：19950908公开号：EP0702454A1公开日：19960320
专利附图：
摘要：The detector includes a circuit which determines the absolute value of areceived signal (Rx). An averaging device determines the mean value for this absolutevalue and two comparators compare the signal with two predetermined thresholds for
detection and loss of transmission (DETCH, LOSSTH). A second averaging device isassociated with two further comparators (C3,C4) which compare the signal with twoextreme values (DETHF, LOSSTHF) which lie beyond the first pair of detection thresholds.The first averaging device has a longer time constant than the second averaging device.
申请人：SGS-THOMSON MICROELECTRONICS S.A.
地址：7, Avenue Galliéni F-94250 Gentilly FR
国籍：FR
代理机构：de Beaumont, Michel
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