Combined inforamtion recording and graphic display device
First Claim
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1. Electronic recording and display apparatus for receiving, recording and displaying the value of an analogue electrical input signal applied to an input terminal of said apparatus, said apparatus comprising:
- time period generator means including an oscillator operating to produce a pulse signal having a constant given pulse repetition frequency, and first count means connected to said oscillator and operating to count the pulses of said given pulse repetition frequency and to produce an output after a given count thereby acting in effect as a frequency divider whereby to determine a given sampling interval;
input signal digitizing means receiving said analogue electrical input signal and operating to convert the analogue incoming electrical input signal to a binary digital signal representative of the means value of said input signal over said sampling interval;
random access memory means operating to store said digitized values at successively addressable storage locations thereof;
address generator means operating to generate signals representing a sequential series of adrress locations in said random access memory means whereby to store successively generated said binary digital signals representing said mean value of said input signal over said sampling interval at successively addressable storage locations in a predetermined reading patter in said random access memory means;
a solid state matrix display device operating to display a plurality of successive said binary digital signals stored in said random access memory meaans in a pseudo-analogue display pattern composed of a plurality of individual digitally controlled display elements; and
operator controllable display control means connected to said random access memory means and to said solid state matrix display device, and operating to select any desired set of digital signals stored in said random access memory for display by said solid state matrix display device;
said solid state matrix display device operating to display the individual values of said selected set of stored digital signals in graphic form as an emulation of a chart recorder.
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Abstract
An electronic recording and display apparatus for performing the function of a chart recorder comprises a solid state display device controlled from a memory by a display controller. The memory receives signals in the form of 8-bit binary number digitized by a signal digitizer from an analogue input signal. the display device graphically displays a set of the signals stored in the memory and this can be "scrolled" through all the information stored in the memory in a manner similar to a chart recorder.
34 Citations
12 Claims
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1. Electronic recording and display apparatus for receiving, recording and displaying the value of an analogue electrical input signal applied to an input terminal of said apparatus, said apparatus comprising:
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time period generator means including an oscillator operating to produce a pulse signal having a constant given pulse repetition frequency, and first count means connected to said oscillator and operating to count the pulses of said given pulse repetition frequency and to produce an output after a given count thereby acting in effect as a frequency divider whereby to determine a given sampling interval; input signal digitizing means receiving said analogue electrical input signal and operating to convert the analogue incoming electrical input signal to a binary digital signal representative of the means value of said input signal over said sampling interval; random access memory means operating to store said digitized values at successively addressable storage locations thereof; address generator means operating to generate signals representing a sequential series of adrress locations in said random access memory means whereby to store successively generated said binary digital signals representing said mean value of said input signal over said sampling interval at successively addressable storage locations in a predetermined reading patter in said random access memory means; a solid state matrix display device operating to display a plurality of successive said binary digital signals stored in said random access memory meaans in a pseudo-analogue display pattern composed of a plurality of individual digitally controlled display elements; and operator controllable display control means connected to said random access memory means and to said solid state matrix display device, and operating to select any desired set of digital signals stored in said random access memory for display by said solid state matrix display device; said solid state matrix display device operating to display the individual values of said selected set of stored digital signals in graphic form as an emulation of a chart recorder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Electronic recording and display apparatus comprising an input circuit for receiving input signals, integrator means connected to said input circuit and operating to integrate said input signals whereby to produce an output digital signal therefrom,
memory means connected to said integrator means, said memory means operating to store said digital signals upon generation thereof by said integrator means, address genertor means connected to said memory means, said address generator means operating to generate signals for determining the addresses at which said digital signals are stored in said memory means; -
display control means connected to said memory means, and solid state matrix display means connected to said display control means so as to be controlled thereby and operating to display on a screen thereof a sequential set of said stored digital signals selected by said display control means, with each digital signal being represented as one of a line and a point on said display screen whereby to provide a graphic display of said sequential set of said stored digital signals.
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Specification