Abstract: A system is disclosed for enabling a user to specify one or more trigger conditions by graphically creating a pictorial representation of the trigger conditions. The pictorial representation is presented on a display window of a graphical user interface of a logic analyzer and is accomplished using trigger-condition icons. Each icon represents a trigger condition of a signal or bus. The user specifies the trigger conditions by positioning the trigger-condition icons on the display window. The user does this by selecting, dragging, and dropping the trigger-condition icons onto the display window. The display window may include one or more name elements, each associated with a signal or a bus. The user may specify the trigger condition of a first signal or bus by selecting a trigger-condition icon and positioning it at a first position on the display window in horizontal alignment with the name element of the first signal or bus.

Abstract: Multiple views of the signal are generated by a time-sharing use of the oscilloscope's acquisition hardware. The instrument software makes a set of measurements of the input signal, and from the results of those measurements classifies the input signal as to type. Signals of particular types implicitly select suites of views of the signal. The operator sees examples of the other views available while a related view is the main view. Alternate views can be “live” miniature views, and displayed alongside in simplified form, alongside the main view. By clicking on them, these alternative views may be made to become the main view. The operator can add and modify views. Each view comes with a set of measurements that are automatically performed and the results are displayed on the screen as text annotation to the waveform. A different view of the signal comes with different automatic measurements, and presents the results of these measurements as annotations to the waveform image.

Abstract: A digital engine analyzer has an oscilloscope display screen operable in single-trace and dual-trace modes and in live and freeze modes, and having signal pickup leads for respectively acquiring different input signal waveforms from the engine and digitizing them for storage and display. When the freeze mode is entered, the last-displayed screen display format is frozen, and can then be reconfigured by the user by altering one or more of the number of traces, the signal plotted on each trace, the engine sweep of each trace, the scale and the scale offset for each trace and, in the case of a cylinder sweep, the displayed cylinder. In dual trace screen display formats, the user can also select for display on trace 2 a waveform pattern selected from a stored library of patterns.

Abstract: Arbitrary sets of samples may be suppressed from display and analysis. The resulting record may then be saved in its abbreviated form or discarded. Such a record may also be retrieved and arbitrarily partially suppressed a second or third time, making a series of smaller and less complete acquisition histories. Each of these records may be saved with or without suppressed samples and may be later redisplayed reliably showing those samples originally saved.

Abstract: The disclosed information describes a method, system, and computer-readable medium for performing direct manipulation of displayed content (e.g., dragging the displayed content in a particular direction or dragging a particular part of the displayed content). In particular, content is displayed to a user, and a variety of direct manipulations of the displayed content are provided to allow the user to modify display of the content without the use of separate displayed content manipulation controls. The disclosed direct manipulation techniques are used to modify the display of content by altering the value of a content properties affecting the display. Such properties can include an amplitude affecting the size or level with which the information is presented (e.g.

Abstract: A display for displaying acquired waveforms from an oscilloscope. An x-axis measurement designating time during an acquisition trace, a y-axis measurement designating one or more acquisition traces, and a z-axis measurement designating an amplitude at at least one point of one or more of the acquisition traces are provided. The z-axis is indicated by a color difference, thereby displaying a surface map.

Abstract: Apparatus in accordance with the subject invention maintains an exponentially decayed histogram of the counts of new pixels for each active channel, together with a running count of time and number of acquisitions. At regular intervals determined by a maximum time or by a minimum number of acquisitions it computes a new threshold for each active channel. This threshold will theoretically produce “N” nominally unusual waveforms per second where N is defined by a user “sensitivity” control. The raw histogram is smoothed to provide a stable “tail” of small probabilities. Once a threshold has been determined, subsequent waveforms with more than this number of new pixels are re-examined to determine the number of “really new” pixels. “Really new” pixels are defined as those that are not adjacent to pixels remaining from earlier acquisitions.

Abstract: Data visualization apparatuses, computer-readable mediums, computer data signals embodied in a transmission medium, data visualization methods, and digital computer data visualization methods are provided. According to one aspect of the present invention, a data visualization apparatus includes an image device configured to provide a visual image; and digital processing circuitry coupled with the image device and configured to access data including a plurality of themes, to generate a thematic illustration corresponding to the themes and having a plurality of outer contour lines which are spaced at varying distances relative to a reference line, and to control the image device to depict the thematic illustration.

Abstract: A method and apparatus for configuring and performing processing in a digital oscilloscope. The method comprises the steps of receiving one or more instructions and defining a plurality of processing elements based upon the received instructions. The plurality of processing elements is connected to define a processing web for performing a desired processing. The plurality of processing elements is synchronized to generate a synchronized result.

Abstract: Method and system aspects for utilizing thresholds during the display of dynamically displayed charts are described. The aspects include obtaining data from first and second static charts and setting a value criteria. Data from the first static chart is displayed as a beginning chart, and the displayed data is adjusted from the first static chart to visually indicate a change in the data required by the data from the second static chart as an ending chart. The aspects further include comparing the value criteria to the displayed data, and halting the displaying of the data when the value criteria has been met.

Abstract: A signal acquisition instrument acquires a succession of waveform records and sequentially transfers the waveform records to a rasterizer for rasterizing the waveform records to generate respective rasterized records each composed of a set of vectors, but inhibits transfer of a current waveform record to the rasterizer until a previous waveform record has been rasterized. The maximum number of dots (M) in each vector is made as large as possible provided that the rasterizer does not complete rasterization of the previous waveform record after acquisition of the current waveform record is complete.

Abstract: A system for displaying waveforms representing an input signal includes a display subsystem, coupled to a source of the input signal, for displaying a waveform representing the input signal in response to a display control signal. A trigger circuit is coupled to the input signal source and detects a trigger event. A time displacement circuit is coupled to the trigger circuit and generates a time displaced trigger signal a controllable amount of time after detection of the trigger event. A switch is coupled between the trigger circuit, the time displacement circuit, and the display subsystem. The switch selectively generates a display control signal in response to either the detected trigger event or a time displaced trigger signal.

Abstract: The present invention is a method of obtaining a time history of a signal without having to integrate information on magnitude versus time and phase versus time by separately displaying sets of real and imaginary components of a signal verses time, including the steps of sampling the signal in time, where each time sample of the signal is described by a real and imaginary component; selecting a size of a display on a screen; determining the real and imaginary components for each time sample of the signal; selecting a user-definable number of samples to be displayed at any one instance; and displaying each time sample according to its real component along the X-axis, the imaginary component along the Y-axis, and the time associated with the time sample along the Z-axis.

Abstract: A display controlling device comprises; a display for displaying a data to be displayed in a display field, an input part for scrolling the display field, and a display field shift control unit for shifting the display field in one direction so that when the display field is scrolled in another direction to display the data to be displayed, the whole data to be displayed is displayed in the display field.

Abstract: A real-time annotation system and methodology for annotating measurement waveforms in a signal measurement system that includes a graphical user interface for displaying waveforms and measurement results on a signal measurement system display. Generally, he annotation system enables an operator to generate a graphical annotation label containing any desired data, and to graphically position the annotation label at any desired location on the measurement display, enabling the operator to positionally associate the graphical annotation label with a desired waveform or waveform feature displayed on the graphical user interface. The annotation system is constructed and arranged to enable an operator to graphically generate an annotation label containing operator-generated information and to graphically alter the position of the annotation label such that the annotation label is positionally associated with a desired feature of a waveform displayed on the graphical user interface.

Abstract: A method is provided for increasing the speed at which a graphics image is displayed on a raster, such as in a liquid crystal display. The method incorporates off-line created look-up tables which are stored in memory means associated with a graphics processor unit. Thus, real time calculations are reduced resulting in a faster graphics image response time.

Abstract: A preferred data display apparatus (10) includes an engine analyzer (14), computer (16) and a display device (18). The computer (16) receives waveform data representative of a waveform characteristic of engine operation from the analyzer (14) and produces a waveform display on the device (18) representative of the waveform. The waveform display includes segments (30a, 30b, 30c) displayed in different colors and in a three-dimensional representation. In preferred forms, a mouse (20) is used to snap a cursor (32) along the waveform and display includes amplitude and time data representative of the position coordinates of the cursor (32) and thereby representative of the cursor's position on the waveform. The preferred apparatus is operable to display waveforms derived from different sources.

Abstract: A method and system for displaying a resource schedule containing a plurality of objects in an N-level multiple hierarchy all of which objects are subject to a common dependency, comprising the steps of allocating different non-overlapping areas of a display device for each level of the resource schedules, and graphically displaying each level of the resource schedule in the respective area of the display device in synchronized relationship on a common axis representative of the common dependency. Editing tools are provided for allowing objects of the same level to be interchanged, objects of a given level i (where i<N) to be inserted into an object of a higher level (i+1), and objects of a given level i (where i>1) to be disassembled into an object of a lower level (i−1). The method and system are particularly suited for constructing and editing crew pairings for airlines and allow simple and efficient on-line, interactive manipulation of resources.

Abstract: A system and methodology for use in a signal measurement system having a graphical user interface. The measurement invocation system is configured to provide graphical control elements on the graphical user interface such that the selection of a control element invokes a measurement operation on a selected displayed waveform. The measurement invocation system automatically performs a waveform measurement function when graphically associated by a user with a waveform displayed in a waveform display region of a graphical user interface is disclosed. The measurement invocation system includes a measurement toolbar manager configured to display on the graphical user interface one or more measurement icons. Each of the icons corresponds to a waveform measurement function. The toolbar manager identifies which of the one or more measurement icons has been selected by the user.

Abstract: A wave-form observation apparatus i.e. a digital oscilloscope configured to store and display wave-forms being displayed by a simple operation is disclosed. The analog input picture signal 1 includes wave-forms, characters and figures with their intensity information. The analog signal 1 is A/D converted to a picture data 2. A subtracted picture data 3 is obtained by subtracting a predetermined value from an intensity of the stored picture data 7. Two intensities of the data 2 and 3 are compared. In a ready state for the memory operation, the predetermined value is set to zero, By pushing a button 16, the picture data 2 having strong intensity is selected in the switch S2 to obtain intense picture data 6. Thereafter the switch S2 selects the data 3 which is equal to the intense picture data 6 in their intensities. Thus the stored picture data 7 is repeatedly displayed in the memory operation.

Abstract: A digital signal transmission system using a digital modulation system comprising a digital signal transmitter having a first digital signal processing unit and a digital signal receiver receiving a digital signal from the transmitter, wherein the digital signal receiver comprising a second digital signal processing unit for processing the digital signal from the transmitter and outputting a digital demodulated signal and a correlation value signal, a signal converter coupled with the second digital signal processing unit and supplied the correlation value signal therefrom for generating a waveform indicating a transmission condition including a main wave in response to the correlation value signal, and a display coupled with the signal converter for displaying the waveform indicating a transmission condition in the digital transmission system.

Abstract: A signal acquisition instrument acquires a succession of waveform records and sequentially transfers the waveform records to a rasterizer for rasterizing the waveform records to generate respective rasterized records each composed of a set of vectors, but inhibits transfer of a current waveform record to the rasterizer until a previous waveform record has been rasterized. The maximum number of dots (M) in each vector is made as large as possible provided that the rasterizer does not complete rasterization of the previous waveform record after acquisition of the current waveform record is complete.