Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
196 words
An electronic musical instrument comprising: a first sound generator means having a single oscillator and a first output for producing melody tones, a first group of resistor means connected to said single oscillator, a plurality of switches connected to said first group of resistor means to switch said resistor means into and out of circuit therewith for producing said melody tones at said first output, a second sound generator means having a plurality of oscillators and a second output for producing chord tones, a second group of resistor means forming a plurality of sub-groups of resistor means, a plurality of switches connected to each of said sub-groups, each sub-group of resistor means including discrete resistor elements being connected to a selected one of said plurality of oscillators and each discrete resistor element of each sub-group selectively switched into and out of circuit with its oscillator for energizing the oscillator at different frequencies to produce predetermined chord tones at said second output, audio amplifier means connected to said first and second outputs for simultaneously receiving said melody and said chord tones, and loud-speaker means connected to said audio amplifier means to provide melody and chord sounds therefrom.
Claim 2
Dependent Claim
196 words
An electronic musical instrument comprising: a first sound generator means having a single oscillator and a first output for producing melody tones, a first group of resistor means connected to said single oscillator, a plurality of switches connected to said first group of resistor means to switch said resistor means into and out of circuit therewith for producing said melody tones at said first output, a second sound generator means having a plurality of oscillators and a second output for producing chord tones, a second group of resistor means forming a plurality of sub-groups of resistor means, a plurality of switches connected to each of said sub-groups, each sub-group of resistor means including discrete resistor elements being connected to a selected one of said plurality of oscillators and each discrete resistor element of each sub-group selectively switched into and out of circuit with its oscillator for energizing the oscillator at different frequencies to produce predetermined chord tones at said second output, audio amplifier means connected to said first and second outputs for simultaneously receiving said melody and said chord tones, and loud-speaker means connected to said audio amplifier means to provide melody and chord sounds therefrom.
Claim 3
Dependent Claim
51 words
The electronic musical instrument of claim 1 further including a source of alternating current voltage, and circuit means including a switch connected between said source of alternating current voltage and said single oscillator of said first sound generator means for selectively inserting into said single oscillator a supplemental fix frequency sound.
Claim 4
Dependent Claim
41 words
The electronic musical instrument of claim 1 wherein said plurality of oscillators of said second sound generator means is three oscillators, and said second group of resistor means includes three sub-groups of resistor means, one sub-group connected with each respective oscillator.
Claim 5
Dependent Claim
24 words
The electronic musical instrument of claim 1 wherein each of said oscillators includes a programmable unijunction transistor operated in a relaxation oscillator circuit mode.
Claim 6
Dependent Claim
95 words
The electronic musical instrument of claim 1 wherein said first group of resistor means is formed of a plurality of discrete resistors and connected in series and forming a circuit point between each resistor, said discrete resistors of said first group being switched into and out of circuit with said single oscillator at the circuit points between the resistors of said first group, whereby the total resistance value connected with said single oscillator is the sum of the values of the discrete resistors between said single oscillator and a selected one of said circuit points.
Claim 7
Dependent Claim
69 words
The electronic musical instrument of claim 5 wherein each of said sub-group of resistor means is formed of a plurality of discrete resistors connected in series and forming a circuit point between each resistor, said discrete resistors of each of said sub-grouPs being switched into and out of circuit with its associated oscillator of said second sound generator means at the circuit point between the resistors of said sub-group.