Squelch detection circuit

Details Squelch detection circuit Squelch detection circuit

2005-02-22

2005-02-22

Ramakrishnaiah, Melur (Department: 2643)

Telecommunications

Receiver or analog modulated signal frequency converter

Squelch

C455S218000, C375S351000, C327S551000

Reexamination Certificate

active

06859645

ABSTRACT:
Disclosed is a transmission envelope detector referred to a squelch detection circuit for effectively detecting an element of transmission data in a high speed serial data transmission system. The squelch detection circuit of the invention includes a differential input level shifter, a first reference voltage generator, an amplifier, a second reference voltage generator, and a comparator. The squelch detection circuit can detect whether the transmission data is a noise or signal element even at a cross point of the transmission data, resulting in achieving stable data transmission.

REFERENCES:
patent: 4724545 (1988-02-01), Hamada
patent: 5003556 (1991-03-01), Curtis et al.
patent: 20030112058 (2003-06-01), Park

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