Patent Number: 7,825,697

Title: Signal detection circuit with deglitch and method thereof

Abstract: A signal detection circuit is used for detecting signal squelch of a differential input signal to generate a corresponding digital output signal. The signal detection circuit includes: a reference voltage generator for generating a reference voltage of which the common mode voltage tracks the common mode voltage of the input signal; a real-time signal judgment circuit, real-time rectifying and amplifying a difference between the input signal and the reference voltage; and a deglitch circuit, sampling and/or amplifying an output signal of the real-time signal judgment circuit, and transforming sampling results into the digital output signal to reflect signal squelch of the differential input signal.

Inventors: Hsiung; Wen-Ching (Hsinchu, TW), Chen; Kuan-Yu (Hsinchu, TW), Chang; Jeng-Dau (Tainan County, TW), Lai; Chia-Liang (Changhua County, TW)

Assignee: Faraday Technology Corp.

International Classification: H03K 9/08 (20060101)

Expiration Date: 2019-11-02 0:00:00