Noise canceler for keying pulse in CATV converter

Details Noise canceler for keying pulse in CATV converter Noise canceler for keying pulse in CATV converter

1991-03-27

1993-03-30

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

307234, 455223, 455305, H03K 505, H04B 112

Patent

active

051990482

ABSTRACT:
A noise canceler for use in a CATV converter includes a keying pulse processing circuit for removing a noise signal from a keying signal. The keying pulse processing circuit includes a canceling signal generator for generating a noise canceling pulse signal, a delaying circuit for delaying the keying signal to produce a delayed signal, and a logic circuit including an AND gate for producing a noise canceled signal which is obtained by taking a logical product of the canceling pulse signal and the delayed signal. Since the noise pulse has a sufficiently small width when compared with the pulse widths of the keying signal and noise removing signal, the noise pulse is removed to obtain a noise canceled signal.

REFERENCES:
patent: 2905816 (1959-09-01), Buebel, Jr.
patent: 3226570 (1965-12-01), Rosenbaum
patent: 3244907 (1966-04-01), Daigle, Jr.
patent: 3588705 (1971-06-01), Paine
patent: 3898481 (1975-08-01), Glaser
patent: 4053932 (1977-10-01), Yamaguti et al.
patent: 4311963 (1982-01-01), Watanabe et al.
patent: 4617678 (1986-10-01), Devensky et al.
patent: 4775840 (1988-10-01), Ohmori et al.

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