US3750187A — Recording and integrator unit

Claim 1

Independent Claim 330 words

A recording and integrator unit for recording a trace of the amplitude of an electric input signal and a trace of an integrated function of the electric input signal comprising input means for receiving the electric input signal, a servomechanicanism signal tracer means connected with said input means and having a servo-motor mechanically coupled with a signal pen to provide the trace of the amplitude of the electric input signal received by said input means, a voltage controlled variable resistance directly connected to said input means, a charging capacitor connected in series with said voltage controlled variable resistance, said voltage controlled variable resistance being responsive to said electric input signal to vary the charging rate of said capacitor to develop an output signal at the junction of said voltage controlled variable resistance and said charging capacitor, a voltage sensitive switching device connected to said junction, a load resistor connected in series with said voltage sensitive switching device such that said voltage sensitive switching device operates to periodically discharge said capacitor through said load resistor to generate a series of pulses the number of which over a given interval represents the integral of the electric input signal over that interval, eleCtronic motor control means connected with the junction of said voltage sensitive switching device and said load resistor, a motor connected with said electronic motor control means, an integrator pen mechanically coupled with said motor for providing a trace of the integrated function of the electric input signal, and reversing means operatively associated with said motor for automatically reversing the direction of said integrator pen as soon as it has travelled a certain predetermined portion of the width of a recording chart to produce a continuous zigzag trace of the integrated function of the electric input signal wherein the traverses in both directions of the integrator pen produce segments of the continuous trace of the integrated function which continuous trace requires only a narrow strip of the total recording chart width.

Claim 2

Dependent Claim 330 words

A recording and integrator unit for recording a trace of the amplitude of an electric input signal and a trace of an integrated function of the electric input signal comprising input means for receiving the electric input signal, a servomechanicanism signal tracer means connected with said input means and having a servo-motor mechanically coupled with a signal pen to provide the trace of the amplitude of the electric input signal received by said input means, a voltage controlled variable resistance directly connected to said input means, a charging capacitor connected in series with said voltage controlled variable resistance, said voltage controlled variable resistance being responsive to said electric input signal to vary the charging rate of said capacitor to develop an output signal at the junction of said voltage controlled variable resistance and said charging capacitor, a voltage sensitive switching device connected to said junction, a load resistor connected in series with said voltage sensitive switching device such that said voltage sensitive switching device operates to periodically discharge said capacitor through said load resistor to generate a series of pulses the number of which over a given interval represents the integral of the electric input signal over that interval, eleCtronic motor control means connected with the junction of said voltage sensitive switching device and said load resistor, a motor connected with said electronic motor control means, an integrator pen mechanically coupled with said motor for providing a trace of the integrated function of the electric input signal, and reversing means operatively associated with said motor for automatically reversing the direction of said integrator pen as soon as it has travelled a certain predetermined portion of the width of a recording chart to produce a continuous zigzag trace of the integrated function of the electric input signal wherein the traverses in both directions of the integrator pen produce segments of the continuous trace of the integrated function which continuous trace requires only a narrow strip of the total recording chart width.

Claim 3

Dependent Claim 91 words

The recording and integrator unit of claim 1 wherein said motor comprises a two phase stepper motor, and said electronic motor control means comprises first and second symmetrically triggered bistable multivibrators connected to receive said series of pulses as trigger pulses, said first and second multivibrators being cross-coupled so as to change state on different alternate ones of said trigger pulses, and first and second electronic switch means and third and fourth electronic swich means controlled by said first and second multivibrators respectively for supplying energizing current to said stepper motor.

Claim 4

Dependent Claim 25 words

The recording and integrator unit of claim 2 wherein said first, second, third and fourth electronic switch means each comprise a complementary pair of transistors.

Claim 5

Dependent Claim 29 words

The recording and integrator unit of claim 2 wherein said reversing means comprises a by-directional helical cam and follower mechanically coupled between said stepper motor and said integrator pen.

Claim 6

Dependent Claim 115 words

The recording and integrator unit of claim 1 wherein said motor comprises a multiple phase stepper motor, said electronic motor control means comprises stepper motor logic means adapted to step said motor in one direction in response to a forward stepping instruction and to step said motor in the opposite direction in response to a reverse stepping instruction, and said reversing means comprises pulse counting means responsive to a particular pulse of each successive group of a predetermined number of pulses of said series of pulses to provide an output signal, and forward-reverse logic means responsive to said counter output signal to alternately provide forward and reverse stepping instructions to said stepper motor logic means.

Claim 7

Dependent Claim 142 words

The recording and integrator unit of claim 1 in which said motor comprises a pen motor having an output shaft mechanically coupled with said integrator pen, and said electronic motor control means and said reversing means comprise up-down counter means responsive to said pulses to alternately count up from a first predetermined number to a second predetermined number and then down from said second predetermined number to said first predetermined number, and digital to analog convertor means connected with said counter and operable to develop an output signal the magnitude of which is proportional to the count of said counter, said digital to analog convertor means being connected to said pen motor such that said integrator pen is traversed in one direction as said counter means counts up and is then traversed in the opposite direction as said counter means counts down.

Claim 8

Dependent Claim 115 words

The recording and integrator unit of claim 1 wherein said motor comprises a pen motor having an output shaft mechanically coupled with said integrator pen, and said electronic motor control means and said reversing means comprises generator means responsive to each pulse in said series of pulses to generate an output signal of generally peaked wave form with said output signal of said generator means being connected with said pen motor such that said integrator pen is traversed in one direction in response to a portion of said wave form leading said peaK and to traverse said integrator pen in the opposite direction in response to a portion of said wave form trailing said peak.

Claim 9

Dependent Claim 130 words

The recording and integrator unit of claim 7 wherein said electronic motor control means further comprises second generator means producing an output signal of a series of second pulses spaced apart in accordance with a constant predetermined number of said peaks of said wave form, each of said second pulses being synchronized with the peak of its respective peaked wave form, and means for summing each of said second pulses with its respective peaked wave form to extend the traverse of said integrator pen associated with said respective peaked wave form, whereby the periodically extended traverses of said integrator pen facilitate the determination of the number of traverses of the integrator pen between two spaced points on the continuous zigzag trace of the integrated function of the electric input signal.

Claim 10

Dependent Claim 250 words

A recording and integrator unit for recording a trace of the amplitude of an electric input signal and a trace of an integrated function of the electric input signal comprising input means for receiving the electric input signal, signal tracer means having a first motor electrically connected with said input means and mechanically coupled with a signal pen to provide the trace of the amplitude of the electric input signal received by said input means, electronic integrator means electrically connected to said input means to receive said electric input signal by said signal tracer means and responsive to said electric input signal to develop an electric output signal which over a given interval represents the integral of said electric input signal over that interval, electronic motor control means responsive to said electric output signal, a second motor connected with said electronic motor control means, an integrator pen mechanically coupled with said second motor for providing a trace of the integrated function of the electric input signal, and reversing means operatively associated with said second motor for automatically reversing the direction of said integrator pen as soon as it has traveled a certain predetermined portion of the width of the recording chart to produce a continuous zigzag trace of the integrated function of the electric input signal wherein the traverses in both directions of the integrator pen produce segments of the continuous trace of the integrated function which continous trace requires only a narrow strip of the total recording chart width.

Claim 11

Dependent Claim 250 words

A recording and integrator unit for recording a trace of the amplitude of an electric input signal and a trace of an integrated function of the electric input signal comprising input means for receiving the electric input signal, signal tracer means having a first motor electrically connected with said input means and mechanically coupled with a signal pen to provide the trace of the amplitude of the electric input signal received by said input means, electronic integrator means electrically connected to said input means to receive said electric input signal by said signal tracer means and responsive to said electric input signal to develop an electric output signal which over a given interval represents the integral of said electric input signal over that interval, electronic motor control means responsive to said electric output signal, a second motor connected with said electronic motor control means, an integrator pen mechanically coupled with said second motor for providing a trace of the integrated function of the electric input signal, and reversing means operatively associated with said second motor for automatically reversing the direction of said integrator pen as soon as it has traveled a certain predetermined portion of the width of the recording chart to produce a continuous zigzag trace of the integrated function of the electric input signal wherein the traverses in both directions of the integrator pen produce segments of the continuous trace of the integrated function which continous trace requires only a narrow strip of the total recording chart width.

Claim 12

Dependent Claim 25 words

The recording and integrator unit of claim 9 wherein said electronic integrator means comprises a voltage to frequency convertor responsive to said electric input signal.

Claim 13

Dependent Claim 66 words

The recording and integrator unit of claim 9 wherein said electronic integrator means comprises a voltage to frequency convertor responsive to said input signal for generating a series of pulses the frequency of which is a direct function of said electric input signal with the number of pulses in said series over a given interval representing the integral of said electric input signal over said interval.

Claim 14

Dependent Claim 42 words

The recording and integrator unit of claim 10 wherein said signal tracer means comprises a servo-mechanism electric input signal tracer means with said first motor being a servo-motor and said second motor comprises a pen motor responsive to said electric output signal.

Claim 15

Dependent Claim 118 words

The recroding and integrator unit of claim 11 wherein said second motor comprises a multiple phase stepper motor, said electronic motor control means comprises stepper motor logic means adapted to step said second motor in one direction in response to a forward stepping instruction and to step said second motor in the opposite direction in response to a reverse stepping instruction, and said reversing means comprises pulse counting means responsive to a particular pulse of each successive group of a predetermined number of pulses of said series of pulses to provide an output signal and forward-reverse logic means Responsive to said counter output signal to alternately provide forward and reverse stepping instructions to said stepper motor logic means.

Claim 16

Dependent Claim 143 words

The recording and integrator unit of claim 11 in which said second motor comprises a pen motor having an output shaft mechanically coupled with said integrator pen, and said electronic motor control means and said reversing means comprise up-down counter means responsive to said pulses to alternately count up from a first predetermined number to a second predetermined number and then down from said second predetermined number to said first predetermined number, and digital to analog convertor means connected with said counter and operable to develop an output signal the magnitude of which is proportional to the count of said counter, said digital to analog convertor means being connected to said pen motor such that said integrator pen is traversed in one direction as said counter means counts up and is then traversed in the opposite direction as said counter means counts down.

Claim 17

Dependent Claim 116 words

The recording and integrator unit of claim 11 wherein said second motor comprises a pen motor having an output shaft mechanically coupled with said integrator pen, and said electronic motor control means and said reversing means comprises generator means responsive to each pulse in said series of pulses to generate an output signal of generally peaked wave form with said output signal of said generator means being connected with said pen motor such that said integrator pen is traversed in one direction in response to a portion of said wave form leading said peak and to traverse said integrator pen in the opposite direction in response to a portion of said wave form trailing said peak.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-07-30	1977-01-29	1977-07-31	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-07-30	1981-01-29	1981-07-31	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-07-30	1985-01-29	1985-07-31	$7700.00	Window Closed / Lapsed

Recording and integrator unit

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