A multi-channel display apparatus includes a computer having a random access memory means for storing of the continuous monitored data and for driving of a multiple-channel television unit, with each channel identified by a preselected unique color. Vertical scan lines generate line display segments in each channel. The computer stores line segment definition information which is compared with a beam driver control to activate one color driver which is preset to produce a predetermined color presentation for the channel. Alphanumeric data may be displayed in selected channels through a separate character channel having a character generator with an internal sequence system to read-out the selected character and channel location, with an auxiliary decoder selecting the color driver. A computer processor and a display controller are operated through an interlocking control, with the controller monitoring the computer and allowing computer-memory coupling. During a character display, the computer kills the processing cycle, while during a graphical display, the line segment generation is interrupted at an appropriate time and held in standby. The processing system for line segment display includes buffer and latch registers for each line in each channel. A digital logic comparator driven from a single coordinate count unit, reset at the beginning of each scan line, sequentially reads the register and activates channel related color drivers. A synchronizing signal unit provides horizontal and vertical sync signals for driving of the television unit and processor and the sync clock is coupled to drive the comparator. Each driver includes continuously variable primary color signals which are connected to the television set by suitable mixer to permit preset of each channel to any desired color. The channels can be located on the display screen in separate or superimposed locations and related graphical and character channels can be displayed in corresponding color by suitable logic circuitry. BACKGROUND OF THE INVENTION The present invention relates to a multi-channel color display apparatus and particularly to such an apparatus for displaying of different monitored data in channels with individual unique color per channel. In the monitoring of various functions and processes, it is often desirable to produce a continuous, visual presentation related thereto. For example, in the monitoring of human body functions and the like, such as cardiac conditions, it may be desired to produce an automatic display of various interrelated medical data. A continuous display of the patient's ECG trace, blood pressure, temperature and the like, must be, under conditions, monitored on a continuous basis. In manufacturing systems, environmental controls and the like, visual display is often desired. Various systems have been suggested for providing visual display of such monitored information at a remote location. Generally, the various prior art systems have suggested the concept of transmitting of the information to a storage oscilloscope device or the like with scanning means to scan and transmit the signals to various viewing stations, or to one or more viewing stations, through a selective scanning concept. Generally such devices have employed black and white video presentations although color presentations have been suggested, for example, as shown in U.S. Pat. No. 3,642,634. Generally, where the color concept is employed, each point or individual scan line has been individually color coded to control the related trace. Although such devices provide a means of very satisfactory display concepts, they are generally relatively complicated, expensive and, therefore, of somewhat limited application. More recently, data has been transmitted and stored in shift registers with the information sequentially transferred to a display unit, for example, as shown in U.S. Pat. No. 3,745,407. SUMMARY OF THE PRESENT INVENTION The present invention is particularly directed to a multi-channel data display color display apparatus including a computer having a random access memory means for storing of the continuous monitored data and for driving of a multiple channel display means, with each channel identified by a selected unique color. The present invention particularly in one unique aspect uses a conventional commercial television receiver reoriented to present vertical scan lines and appropriate beam controls to generate line display segments in each channel and thereby generate a total display of the monitored data. The output of the random access memory means is cyclically and repetitively transmitted in time-spaced relation through a color display control for separating of the signals for display in related display channels and coupling them to a common color driver means. In accordance with the present invention, the computer stores the defintion of line segment for each scan line in a storage means and the information is compared with a beam driver control to activate the color driver means accordingly. The color driver means is preset to produce a predetermined color presentation in each channel and thereby provide a color-coded presentation. The position of each channel can be controlled to produce separate or superimposed graphical displays with the color distinction between the channels. The display apparatus may, in accordance with another aspect of this invention, also include means to display alphanumeric data in selected channels. In this aspect of the invention, a character memory bank is provided having means to output to a character generator having an internal sequence system to readout the selected character and channel location with an auxiliary decoder to select the color and channel identification. The present invention provides a system which can employ the various standard presentation techniques associated with commercial television such as split screen presentation with alphanumeric information. The combined computer-display system with a time shared memory provides for programmed version and storage of the monitored information with the necessary versatility in use and processing of the information. Thus, the sampling of information is essentially independent of the output processing and display. The medical or any other monitored data is sampled at any desired reasonable rate and stored in computer memory which establishes a record of the channel and the display line. The computer processing means and the display means are operated through an interlocking control, with the computer establishing the overriding control of the transfer of information to and from memory. A horizontal and vertical sync signal generator drives the television display means to cyclically transfer the data from memory into an auxiliary processing system for display. The computer, however, may terminate the operation of the processing system at any time and establish access to the memory bank for processing. During a character display, the computer kills the processing cycle, while during a graphical display, the computer request is anticipated and the line segment generated interrupted at an appropriate time. The processing system for graphical display includes data information buffer and latch registers for each line in each channel to be displayed. At the end of the scan of the previous line, the latch registers are outputed or transferred to a corresponding pair of control or latch registers. The output of the control or latch registers are coupled as the inputs to a pair of digital logic comparing units driven from a single coordinate count unit, which is reset at the beginning of each scan line. The present invention employs the conventional television receiver and interlaced scanning is employed for the graphical display. The sequential entry of information into the several pairs of buffer registers and transfer to the control registers is controlled by the output signals of the television receiver synchronizing signal unit and particularly the horizontal and vertical sync signals and the odd and even frame signals. The coordinate count unit is driven from the sync clock and is reset at the beginning of each scan line. The digital stored memory signals in the registers are compared with a counter and when a selected comparison with the first register exists the color gun units are driven to illuminate a correspondingly positioned display coordinate of the conventional television set and illumination is maintained until a selected comparison with the second register exists. In this manner, the unit continuously controls the individual coordinates of the respective traces illuminating or presenting a coordinate when in a proper time position in accordance with the data. The character display processing system includes a suitable readout with its own internal sequence to produce predetermined characters in response to a coded binary input, with the output coupled through a channel decoder. The color interfacing includes individual preset channels for properly shaping and transmitting of the channel control signals, with the output being interrelated to a suitable position and condition control interlock. The channel output may generate three-gun control signals of a predetermined relationship and thereby establish a predetermined color signal uniquely related to that particular channel. The television sync signals are derived from the same sync signal generator or source as the timing signals for the transfer or interface with the memory unit such that the coordinate signal is predetermined and merely the assignment of its position for the related channel is controlled by the signal processing. Thus the processing of the information for each coordinate is minimized while maintaining the highly desirable color separation control. The channels can be located on the display screen in separate or superimposed locations and related graphical and character channels can be displayed in corresponding colors by suitable logic circuitry. Further, to ensure a continuous appearing color graph, the initial coordinate is emphasized by generating of a pulse signal in response to each channel signal. The pulse signal is applied to the color driver circuits in synchronism with the initial turn-on of the channel. An alarm control can be incorporated into the system to change from one color to a different color under certain alarm or preset conditions. Thus, the present invention provides a highly simplified basic concept in producing of a preset color channel with means for sequentially coupling of the data to the color drivers of an associated channel at an appropriate time to produce the multi-channel display on a conventional television unit or the like. The present invention provides a relatively simple reliable means of collecting and visually displaying various interrelated or separate data on a single drive or display unit in a relatively simple and inexpensive construction.
An evacuation assistance locator, which includes a processor communicative with a memory device contained with a housing, is detachably mounted to a fixed structure, such as an office building, for receiving location information from non-ambulatory individuals to assist emergency personnel in quickly finding the non-ambulatory individuals location in the event of an emergency. The housing also includes a display screen and an input keypad so that the non-ambulatory individual can input their location and departure time information and so that only authorized emergency personnel can retrieve the location information by using a secret access code. A plurality of evacuation assistance locations can be linked to a central office for access by the appropriate personnel.
A pulse oximeter display device which displays oxygen saturation data is provided. The device comprises a multicolor display unit which displays oxygen saturation data in first and second colors. A display drive is coupled to the display unit, and a control unit is coupled to the display drive. Limits for oxygen saturation data are set by the control unit. The control unit further provides three signals to the display drive. The first signal is provided to continuously illuminate the display in the first color if the oxygen saturation data is within the limits. The second signal is provided to intermittently illuminate the display unit in the second color if the oxygen saturation data is not within the limits. The third signal is provided to continuously illuminate the display unit in the second color if the limits have not been set.
A method and computerized system for ECG data review and analysis are provided. In preferred embodiments, a transformation is performed on beat data and the transformed data are categorized into beat "bins." The clinician/user may select sensitivity to vary the number of bins created by the system. Once beats are preliminarily assigned to bins by the system, the clinician/user may review beats by bin and reassigned beats as desired. In preferred embodiments, recategorization is accomplished by "dragging" a beat to a new bin with the aid of a pointing device or "mouse." In preferred embodiments, a superimposition mode allows dynamic review of beat graphs with automatic detection, color coding, and optional pause at abnormal beats. Audio information is also preferably provided to aid the clinician/user in detecting abnormal beats. A P-wave marker capability is also provided to give a constant reference point during beat review in the superimposition mode. Preferred embodiments also provide the clinician/user immediate access to surrounding real-time data when reviewing individual beats.
A system which is capable of simultaneously displaying a plurality of waveforms on the face of a CRT which are representative of ECG, arterial pressures and operating states of the mechanical heart assistance devices, as well as a "timing bar" which sweeps across the CRT face in synchronism with the ECG trace, for example. Optical pickups are slidably mounted adjacent the CRT face across the path of the "timing bar" sweep for activating photodetectors which in turn initiate inflation and deflation of mechanical assistive devices at any desired point along the ECG or pressure trace. Any one of the pressure or ECG traces may be "frozen" on the display face to facilitate comparison between a trace of the condition of the heart prior to the use of heart assistance and a trace of the augmented condition. All traces may be freely moved to any location upon the display face so as to permit close positioning and even superimposition of two or more traces to still further facilitate visual comparisons. The "timing bar" may also be utilized to provide an electrical pacing assist for controlling patient heart rate as well as for extending the heart refractory period enabling the assistance devices to operate at reduced rates. Means are provided for presenting "frozen" and regular traces at different display intensities.
A raster type display apparatus includes interlaced even-and-odd frames. A digital memory of a computer stores line segment data in locations which are sequentially read out to form a line segment display with overlapping line segments. The first line of one field is defined by a "O" start location and a third removed location for the end. The second line is defined by the fourth and seventh locations, and so forth. The first line of the second field starts with the last data taken plus two to access and define the line by the second and fifth locations, and so forth. The first field again reads the start to third locations, fourth to seventh, etc. Data points equal to twice the scan lines are displayed with each scan line spread over four data points. An off-scale detector prevents a line segment directly between the data points and creates a pair of line segments at the top and bottom of the display screen. An extended line from a break point in a curve to screen bottom is also prevented. Resettable registers monitor the carrier bits of digital multiplier and adder and are connected by an even-odd detector to actuate an exclusive "OR" gate to complement the output and generate the appropriate split display. A display control assigns a data words as a control which are loaded in memory by the computer. A detection network controls an "ANDED" routing network for coded control of the line segment definition, such as blanking and channel changes.
