Receive squelch circuit having function of detecting pulse width

Details Receive squelch circuit having function of detecting pulse width Receive squelch circuit having function of detecting pulse width

1997-10-28

2000-08-22

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

455220, 455222, 327 31, H04B 116

Patent

active

061085286

ABSTRACT:
A receive squelch circuit detects a pulse width of an input data signal to prevent errors from occurring during detection of received data. The squelch circuit adds a function of detecting a pulse width to an input side to detect normal and abnormal pulse signals of received data and adjust the squelch circuit operations. The squelch circuit includes a plurality of current sources for each supplying a predetermined amount of current in accordance with a supplied power and a plurality of MOS transistors for detecting a pulse width of an input differential data signal. A plurality of voltage comparators compares the detected pulse width of the input differential data signal with a standard value and judges whether the detected pulse width is normal.

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patent: 5285481 (1994-02-01), Van Tran
patent: 5327465 (1994-07-01), Wincn et al.
patent: 5408694 (1995-04-01), Tran
patent: 5418821 (1995-05-01), Tran

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