Abstract: TV signal distribution system which includes a programmable filter device which receives the TV signal and is connected to the end-user TV via an interface device, the interconnections between the devices being made by coaxial cables and a programming unit being connected via the interface device to the coaxial network. Method for programming a programmable filter device in a TV signal distribution system, including the steps of providing an interface device in the coaxial network, connecting a programming unit to the interface device and exchanging communication signals between the programming unit and the programmable filter device over the interface device and the coaxial network, for programming the filter circuit device.

Abstract: TV signal distribution filter device which includes at least one tuneable band-pass filter circuit, each tuneable filter circuit having a signal input for receiving a TV signal, a signal output for delivering a filtered TV signal, and a plurality of components connected in a predetermined configuration between the signal input and the signal output and together being provided for filtering the received TV signal to the filtered TV signal, said plurality of components including at least a first inductor and a second inductor, each accompanied by a tuneable capacitive component and connected to a voltage node which is provided for receiving a tuning voltage for tuning the tuneable capacitive component and thereby setting a filtering parameter of the tuneable filter circuit, the first and second inductors being planar inductors which are mechanically fixed and embedded in a dielectric environment and are electro-magnetically coupled with each other.

Abstract: An electronic filter device for the reception of TV-signals, comprising a plurality of frequency determining elements settable by means of an analog setting voltage, a memory (2) for storing digital values representative of the analog setting voltages and conversion circuitry (11-14) for converting the digital values into the analog setting voltages. The conversion circuitry comprises a first part (11-13) for generating a digitally modulated signal for each digital value, the digitally modulated signal having a modulated characteristic representative of the digital value, and a second part (14) for converting each of the digitally modulated signals into the analog setting voltages.