Keyed pulse sensor circuit

Details Keyed pulse sensor circuit Keyed pulse sensor circuit

1995-01-13

1996-09-24

Tse, Young T.

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

375344, 327100, H04L 2706, H03K 508

Patent

active

055598366

ABSTRACT:
A pulse sensor for sensing keyed pulses for a keyed AFC which is used in a hi-vision satellite broadcast receiver, has a differentiating circuit that differentiates pulse signals supplied thereto so as to be amplified by a dc amplifier. The amplified signal is transformed by a window comparator such that a resultant signal having a fixed voltage level is output as a pulse sense signal. The sensor circuit is simplified and can be easily manufactured in an integrated circuit configuration.

REFERENCES:
patent: 3671935 (1972-06-01), Lipp et al.
patent: 4029904 (1977-06-01), Papeschi
patent: 4654862 (1987-03-01), Camborde et al.
patent: 4695742 (1987-09-01), Randall
patent: 4942315 (1990-07-01), Tarng
patent: 5045800 (1991-09-01), Kung
patent: 5140591 (1992-08-01), Palara et al.

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