Electronic filter device for the reception of TV signals
AssigneeUnitron, L.P.
InventorStephen Deleu
Life of this patent
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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.
Claims24
An electronic filter device for the reception of TV-signals, comprising:
- a plurality of frequency determining elements, each frequency determining element being 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,
- wherein 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.
An electronic filter device for the reception of TV-signals, comprising:
- a plurality of frequency determining elements, each frequency determining element being settable by means of an analog setting voltage,
- a memory (2) for storing digital values representative of the analog setting voltages and a field programmable gate array (15;
- 16) integrated conversion circuitry (11-14) for converting the digital values into the analog setting voltages,
- wherein the integrated 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.
Dependencies are inferred from the claim text.