ACTIVE FILTER

Brand	Owner (click to sort)	Address	Description
ACTI-FILTER	LORILLARD TOBACCO COMPANY	714 Green Valley Road Greensboro NC 27408	active filter;cigarettes;
ACTIFILTER	DRINKSTATION, INC.	1605 Lockness Place Torrance CA 90501	ACTIVE FILTER;Filtering units for water filtering; filters for drinking water; water filtration and purification units and replacement cartridges and filters therefor;
ACTIFILTER	SUN DESERT CORP	318 N Carson St #208 Carson City NV 89701	ACTIVE FILTER;Filtering units for water filtering; filters for drinking water; water filtration and purification units and replacement cartridges and filters therefor;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An integrated front end filter for a tuner provides an array of from several to a multitude of passbands, each for passing at least one but less than all channels designated in a band of frequencies. Each passband is exclusively selectable. The integrated front end filter can include at least one active filter unit with an active reactance element in either of fixed and variable filter configurations and a decoder coupled to said at least one active filter unit and being responsive to a control signal for selecting a one of the passbands. In one example, a multitude of active filter units of fixed filter configuration provide the multitude of passbands. In another example, a plurality of data corresponds to a like plurality of selectable passbands in combination with a filter element of the variable filter configuration. Each data is stored at a predetermined location and reproduced in response to a corresponding control data signal from a tuner controller. Each data characterizes one of the plurality of passbands. The filter element is switchable from one passband to another in response to the control data signal. Lower power dissipation and lesser requirements of an on-following integrated circuitry tuner permit a reduction of "off chip" connections and cost.