|5546467 : Active noise attenuated
||Denenberg; Jeffrey N.,
||Noise Cancellation Technologies, Inc.,
||Aug. 13, 1996
||Mar. 14, 1994
|INTL. CLASS (Ed.
||A61F 11/06; H03B 29/00;
||381-071; 381-094; 340-310.01; 340-310.03;
|FIELD OF SEARCH:
||381-71,94,73.1 ; 340-310.01,310.02,310.06,310.04
; 379-66,442,444 ;
||Hiney; James W.;
ABSTRACT: An active noise control system for
controlling multiple home appliances and including a power
distribution network by which many appliances can be quieted by
remotely processing noise signal information and forwarding noise
cancelling signals to the appliances through the distribution
||APPARATUS FOR UTILIZING AN A.C. POWER LINE TO COUPLE A REMOTE
TERMINAL TO A CENTRAL COMPUTER IN A COMMUNICATION SYSTEM
||Campbell et al.
||Schwarzbach et al.
||Appliance control system
||Method for transmitting and receiving signals over transmission
||Takahashi et al.
||Electronic noise attenuation system
||Remote control system using power line of remote site
||Method and means of operating a power line carrier
||Digital virtual earth active cancellation system
||Active noise control apparatus for domestic appliance
||Remote siren headset
CLAIM(s): Show all 8
- 1. An active control system adapted to provide control to at
least one house appliance to be quieted through the power
connection, said system comprising
- an active noise control means associated with a power
- at least one appliance means to be quieted, and
- a power connection means comprising a dual frequency modulation
means between said control means and said appliance means adapted
to convey noise control signals from said control means to said
appliance means and a residual noise signal from said appliance
back to said control means.
APPLICATION PRIORITY DATA: none
Isen; Forester W.; Mei; Xu
- M. S. Roden, "Digital Communication Systems Designs," Sections
5.6-5.9, 12.1 (1988).
ADDED TO DATABASE:
Sep. 1 , 1996