Abstract: As part of a method of producing a customized chart for use with chart recorder apparatus, a user desiring the customized chart is provided with a list of questions including, for example, the size of the chart; the graduations of the chart with respect to a first chart dimension; and the graduations of the chart with respect to a second chart dimension. The questions are input to a software applications program operative to generate a datafile containing a graphical representation of the desired chart based upon the answers received. The datafile is delivered to a printing facility, where the chart is physically produced in accordance with the data file, then delivered to the user. One or more of the steps associated with the method may be carried out over a remote communications link such as a telephone to enhance convenience. For example, the step of inputting the answers may take place over a communications link from a remote location using phone lines and voice, modem or Internet protocols.

Abstract: An improved chart recorder integrates a variety of flexible control functions, including the ability to program a plurality of set points, which are advantageously made visually apparent on the chart recorder paper and used for direct equipment control. In a preferred embodiment, a reversible stepper motor is used in conjunction with an operator input, enabling a user to incrementally advance one or more pens in two dimensions in conjunction with paper travel. The chart paper may further optionally include a machine-readable code containing chart-related information, including scale resolution, with the recorder being programmed to detect and interpret the machine-readable code and adjust pen movement to ensure compatibility with the scale resolution.

Abstract: An ink jet recording apparatus that makes a recording of a measured input at a time occurring at a predetermined cycle and includes a control section for making the recording at the time by printing dots in the form of a segment in a recording sheet width direction. The segment corresponds to a variation of a measured input between a time and a time before such time. For example, the apparatus prints a segment connecting a position corresponding to a measured input value at a certain time to a position corresponding to a measured input at a time before such certain time, or the apparatus prints a segment connecting positions respectively corresponding to a minimum measured input value and a maximum measured input value between a certain time and a time before such certain time. Accordingly, the apparatus produces a printed line apparently close to a line obtained by a continuous recording system, although the recording is intermittent and thus takes place at a predetermined cycle.

Abstract: The present invention relates to a thermal recorder employing a linear array of heat-producing elements which moves in a direction on heat-sensitive recording paper advanced in a direction perpendicular to the array scan direction. The recorder can be used for recording groups of facsimile picture signals successively received at a time interval with different degrees of darkness in direct proportion to the amplitude of the facsimile signal.

Abstract: A system for providing X-Y trace coding of multiple parameter recordings through use of a single stylus, single trace recorder by multiplexing multiple signals to the recorder with given time intervals for each multiplexing channel, and in a separate mode by superimposing predetermined waveforms upon the signal information, which superimposed waveforms in coordination with the time the signals are supplied to the recorder and the time of movement of the recorder, moves the stylus to record a given indicia or design, identifying a given channel of information on the single trace recording.

Abstract: A spectrophotometer to draw time changes of a plurality of spectrophotometric data by one recording pen.

Abstract: In an exemplary embodiment writing fluid is continuously supplied from a nozzle toward a recording medium. The nozzle is subjected to excursion by a corresponding angle in order to change between the two points to be printed. In order to improve the recording quality and the recording speed the nozzle is subject to high-speed excursion upon transition between the points in accord with such a time function .phi. (t) that the writing fluid is always moved in the direction toward the new point after it has departed the nozzle. The time function can be set by means of a suitable selection of the parameters of the printer. The excursion signal can likewise be correspondingly shaped or the excursion can be effected by a feedback control loop.

Abstract: In an exemplary embodiment, a recording head and recording carrier are movable relative to one another for the purpose of recording several measurement signals on the recording carrier. It is the object of the disclosure to produce such a recording device which, with the lowest possible technical outlay, offers an optimum variation possiblity in the recording of a plurality of individual signals. This object is achieved in accordance with the disclosure by virtue of the fact that there is allocated, to an individual recording head as the recording element on the recording carrier, a variable number; e.g.

Abstract: A device for recording time markings on a speed graph in a tachograph includes a support mounting a pair of rods on which a slide is movably displaceable. The slide supports a recording member or stylus for marking the graph. An electromagnet is arranged to tilt the slide and laterally displace the stylus for a brief period of time in the direction of the time coordinate of the tachograph for effecting a marking on the speed graph.

Abstract: A pen recorder in which a memory storing data at its addresses necessary for constituting a character is scanned, and the signals for the addresses where the data are stored are converted from digital to analog signals before they are supplied to a recording pen for recording the character. A hold circuit is located forwardly or rearwardly of a digital-to-analog converter so as to hold a previous address signal until a stored next address of the data is scanned, so that a recorded character will be legible.

Abstract: A stylus having an electrically-conductive writing tip is used to write on an electrically-sensitive paper, for example a metallized paper in which the metallization is eroded by the current passed by the stylus. The stylus is energized by a coded train of electrical pulses whereby the coding is reproduced in the writing which can thus be verified as genuine. The material to be written on, for example an airline ticket whose fraudulent alteration is to be exposed, may be supported on a stand having a conductive resilient arm bearing on the electrically sensitive surface to provide a return path for the stylus current. The principle can be applied with coded optical pulses directed onto an optically-sensitive paper.

Abstract: An improved electroencephalograph system is disclosed having a system for automatically verifying the input and output parameters of the various channels, the preset number selected, and a patient identification number. A coded output is used employing the standard EEG pen recorder outputs. Numerical sequences such as the preset number and a patient identification number are displayed on a single event marker channel as modified Roman numeral sequence of digits directly readable by the operator.

Abstract: Apparatus, for use with a chart recording fathometer, for receiving loran C time difference/line of position information and for recording that information in vertical columns on the chart in juxtaposition with water depth information from the fathometer. The apparatus requires no modifications to conventional recording fathometers and is simply electrically connected to the fathometer's transducer.

Abstract: The specification describes a recording system for the recording of a multiplicity of vehicle operating conditions on a chart. The system includes: recording means for inscribing on the chart; servocontrolled positioning means for positioning and moving the recording means to recording position; and control means which selectively directs different control signals to the servocontrolled positioning means.

Abstract: A lever arm adapted to hold a stylus or the like on one end is rigidly connected at the opposite end in spaced parallel relation to a second arm, and a shaft perpendicular to both arms through the rigid connection provides a pivot axis therefore. An opening in each arm in registered relation, at equal distances from the shaft, receive tabs on opposite edges of a plate-shaped pivoting armature which suspend it between the two arms and position it in a diagonal neutral position in a gap between two axially opposed, individually switched solenoids, each having a contact area and diagonally opposing abutments for contacting the armature biased against them in neutral position by at least one spring, whereby actuation of the solenoids moves the arms to three different stable positions.

Abstract: A recording system with a chart recorder having a movable pen arranged for providing a record on a moving chart of the varying value of a variable has the feature that means are arranged for causing the pen repetitively, at intervals or at selected moments or occasions to execute a traverse on the chart and in so doing to record the current value of a second variable on the chart in binary representation by marking or not marking chart zones crossed in the traverse and allotted to respective information bits for the second variable value. A particular application of the system provides repetitive recordings on the chart of clock and calendar times. Each recording of the second variable is clearly distinguishable from the record trace of the first variable and scarcely interrupts the continuity of the latter.

Abstract: A difference amplifier continuously generates a signal representing the difference between the optical densities of a platelet rich and a platelet poor sample of blood plasma. If this signal lies within a predetermined range, a variable gain amplifier multiplies the difference signal by a factor which is proportional to the initial difference signal. Electronic circuitry automatically determines the multiplying factor by comparing the initial difference signal to a predetermined magnitude. The multiplied difference signal is continuously recorded on a chart recorder and is displayed as a percentage of aggregation on a digital display. An optional filter circuit is provided for selectively filtering the difference signal.

Abstract: In a device for graphically representing characters encoded in a digital nal, a writing element adapted to sweep across a recording medium at selected intervals is enabled by a timing means to selectively mark the recording medium during a selected series of sweeps, and a decoding means receives the digital signal and provides segment select signals, which specify a combination of segments from a group of segments which may graphically represent each of the characters in the digital signal. The outputs of the timing means and the decoding means are coupled to a network of logic elements to generate a signal which is coupled to the writing element, whereby the writing element selectively marks the recording medium during the series of sweeps to form the segments representing each of the characters.

Abstract: A method and an apparatus are taught in which variable analog data, representative of a plurality of physical parameters are recorded on a thermo-sensitive recording paper which is movable along an axis representative of time. A thermal recording head is transversely movable over the recording paper for sequentially recording the variable analog data in their order of value in a unidirectional sweep of the recording head over the paper. The variable analog data signals arriving in the recorder are updated to obtain their instantaneous values and are gathered and transferred to memory locations in a sequential order. The sequential analog data is then tabulated in the order of value in an ascending or declining magnitude and recorded in such order on the recording paper. Successive recordings of tabulated analog values provide tracings on the recording paper giving, in graphic form, a continuous read-out of physical parameters.

Abstract: An improved graphical recorder display system for obtaining an accurate record of one or more sensed and displayed parameter values, such as associated with one or more vital signs of a patient.

Abstract: A recording device for plotting the curve of at least one measured quantity which is reproduced through an electrical signal, including a recorder, a recording or graph carrier, and means for producing relative movement between the recorder and the recording carrier into two directions extending approximately perpendicularly to each other. A time multiplexer alternatingly periodically connects the control input of the recording device to a generator for a reference line signal and to at least one generator for a measured quantity signal. In a suitable construction of the invention, it is proposed that to the particular input of the multiplexer to which there is transmitted the measured quantity signal, there is connected the output of a second time multiplexer which is periodically switched between a plurality of inputs to which there are applied a plurality of measured quantity signals, and wherein the switching of the multiplexer is effected at a predetermined beat.

Abstract: An integrator for continually computing the area under a curve drawn by a chart recorder, and displaying the area information by superimposing small spikes on the curve. The integrator uses a voltage-to-frequency converter that derives its input from the signal source to generate the spikes. A frequency divider circuit can be used so that every nth spike is larger or negative, making readout easier. The spikes and the analog signal are electronically added and the resulting signal is connected to a standard laboratory pen chart recorder. The area under any selected portion of the chart curve is found by counting the spikes on the curve.

Abstract: Apparatus for producing a graph of a function represented by a varying analogue input signal supplied to the apparatus, comprising display means adapted to display in a graphing operation the graph of the function, calculating means adapted to receive the analogue input signal and to calculate the value of a parameter of the function, and control means operable to interrupt the operation of the display means at preselected points in the graphing operation and to cause the display means to display the value calculated by the calculating means and thereafter to resume the graphing operation.

Abstract: Apparatus for providing an offset digital printout of numbers or characters on a multipoint chart recorders with thermal matrix printing. A print head is operable to mark a chart with analog value indications in the form of graphs and is also operable to print numbers and characters at selected positions on the chart. The alphanumeric indications designate particular plots on the chart paper, a time indication or preselected numerical representations.

Abstract: A switching adapter that provides a rapid and convenient apparatus for selective recording of vertical eye movements with a single channel recorder in electronystagmograph apparatus. A number of single channel recorders are used in the field to observe the horizontal eye movements elicited by thermally induced vestibular unbalance. In certain types of pathological unbalances, vertical eye movement is also present, therefore, it is highly desirable to be able to also record the vertical eye movement. The switching adapter conveniently converts single channel recorders that are normally used for recording horizontal eye movement for recording vertical nystagmus.