Multiband tuner control system

A tuning control system for a wave signal receiver capable of receiving signals from different stations in a plurality of frequency bands including in combination:

• first mixer circuit means with first and second inputs and an output;
• means for supplying signals in one of said plurality of frequency bands to the first input of said first mixer circuit means;
• variable frequency oscillator means responsive to control signals applied to a control input for supplying signals to the second input of said first mixer circuit means, said oscillator supplying signals at a plurality of requencies, each having a predetermined relationship with a predetermined portion of the frequencies of said one of said plurality of frequency bands;
• switching circuit means with at least first and second inputs and an output, the inputs of said switching circuit means selectively coupled with the output thereof;
• means for coupling the output of said first mixer circuit means with the first input of said switching circuit means;
• means for supplying signals in at least a second one of said plurality of frequency bands to the second input of said switching circuit means;
• tuner circuit means controllable for tuning the receiver to different received signals;
• means for coupling the output of said switching circuit means with the input of said tuner circuit means;
• a selection circuit comprising first and second multibank switches, the first bank thereof being settable directly to the tens digits of a selected television channel number, and including a first bank of elements therein settable to different positions for supplying control signals to the control input of said variable frequency oscillator means to cause said variable frequency oscillator means to produce an output frequency uniquely related to the corresponding tens decade of the UHF television signals directly represented by the digit selected by the first bank of elements of said first multi-bank switch, said first multi-bank switch further having a second bank of elements for supplying a tuning voltage to said tuner circuit means and having a third bank of elements for controlling the operation of said switching circuit means;
• said second multi-bank switch being settable to the units digits of a selected television channel number and having at least one first bank of elements thereof settable to different positions, each adapted for coupling with a tuning voltage supply means and interconnected with the second bank of elements of said first multi-bank switch to supply a unique tuning voltage thereto for controlling said tuner circuit means, said second multi-bank switch further comprising second and third banks of switching elements interconnected with the third bank of elements of said first multi-bank switch for controlling said switching circuit means in accordance with the combination of settings of said first and second multi-bank switches.