摘要:
An information display device includes a display unit for displaying, on a display screen, a first range and a second range having a display reference position same as that of the first range and being adjacent to the first range in a display area. The device also includes a controller for setting different scales for the first range and the second range and for performing a control to display perimeter information of the device in the display area having the first and second ranges to correspond to a position of the perimeter information.
摘要:
A system for enhancing a vehicle operator's orientation and ability to navigate a vehicle includes, but is not limited to, a display unit, a data storage unit, a position determining unit and a processor communicatively connected to the display unit, the data storage unit and the position determining unit. The processor is configured to obtain a position and heading of the vehicle from the position determining unit, to obtain terrain data from the data storage unit, and to control the display unit to display a three-dimensional representation of a terrain representative of an actual terrain proximate the vehicle. The processor controls the display unit to overlay a three-dimensional compass onto the three-dimensional representation of the terrain to display both the heading of the vehicle and the location of the vehicle with respect to the actual terrain.
摘要:
In one aspect of the invention, an image monitoring apparatus has a plurality of display windows created on a single screen for presenting target objects existing within a monitoring area, wherein an image of the monitoring area and an image of a particular portion of the monitoring area are displayed in separate display windows with reference directions of the individual images aligned independently of each other with a specified direction of the screen. In another aspect of the invention, an image monitoring apparatus capable of detecting target objects existing within a monitoring area and displaying an image of detected target objects on a screen makes it possible to set a particular area of interest within the monitoring area, wherein the apparatus continuously displays a target image of the area of interest regardless of a movement of a point of observation or a change in the direction of the area of interest.
摘要:
A radar indicator comprising a source of radar image signals having a first (r,.theta.) format and a digital scan converter responsive to the radar image signals for converting the radar image signals from the first format to digital radar image signals having a second (X-Y) format. The digital scan converter includes an image memory for supplying the digital radar image signals having the second (X-Y) format. A source of external video image signals having the second format, including video synchronization signals is provided. A synchronization signal stripper and clock signal generator circuit is responsive to the video synchronization signals of the external video image signals for generating a clock signal synchronized with the synchronization signals of the external video image signals. The clock signal is applied to the image memory of the digital scan converter for causing controlled read-out of the digital radar image signals in a manner synchronized with the image signals of the source of external video image signal. Video processing circuitry responsive to the synchronized digital radar image signals develop a radar video signal from the synchronized radar image signals, and a video mixer circuit mixes in a controlled manner the external video image signal with the synchronized radar video signals. The mixed external video images with the radar video images are subsequently displayed.
摘要:
A non-linear range scale for a radar system is implemented whereby the full range capability of the system is shown with emphasis on close-in targets. The arrangement is adaptable to a variety of non-linear functions having the advantage of selection by the user to provide good close-in visibility and visibility of distant conditions simultaneously.
摘要:
A method and apparatus for displaying radar data on a display monitor, wherein the monitor is divided into octants, and wherein the radar data defines a pie-shaped slice to be displayed within an octant on the monitor. The radar data has a center point which is defined as a point on an x-y plane, a radius r which is a defined as a number of displacement units in length extending radially from the center point, a starting angle .theta., a delta angle .differential..theta., radial displacement data which defines the color of groups of displacement units along the radius r for the slice, and a quantity Q which is the number of groups of radial displacement data within said radar data. The radar data is received by a data processing system and stored in memory. The video display monitor is updated by a screen refresh memory controlled by a graphics accelerator. The graphics accelerator receive the radar data for the slice to be displayed from the data processing system; determines the octant in which the slice is to be displayed; expands the radial displacement data into a color table which correlates the radial displacement data to pixel colors so that each displacement unit along the radius r has a color assigned to it; generates vertical or horizontal fill vectors for filling in the slice as determined by the octant in which the slice is to be displayed, said vectors having pixel colors as determined by the color table; and inhibits the loading step while the expanding or generating steps are being performed.
摘要:
A cathode ray tube display device having beam deflection coils (8,10,12,14) and means (44 and 46) for applying to inductive means (58 plus the coils) which includes the beam deflection coils a voltage for causing a ramp current to flow in the coils to produce progressive beam deflection, comprising means (52,54,56) for selectively modifying interconnections between the coils to change the inductance presented to the voltage applying means and thus change the gradient of the ramp current and the rate of beam deflection, said interconnection modifying means being operable to change the number of deflection coils through which said current flows.
摘要:
A bright display radar system having anticollision capabilities in which received signals are digitized at a rate determined by a radar range setting and displayed at a constant relatively slow rate independent of the range setting. A computer based anticollision unit operates in response to the relatively slow digitized received signals so that targets may be tracked equally well at short and long ranges. Two sets of operator actuable switches are provided for controlling the anticollision unit. A first set of switches is provided which correspond directly to the most commonly used computer operating functions. The second includes an alphanumeric keyboard which may be used to actuate subroutines stored in a physically separate read-only memory which operates only in response to the alphanumeric keyboard.
摘要:
A control unit for the brightness of video signals on a raster scan display is provided with a random-access memory. The data stored in each element of this memory determines the brightness of the video signals on the raster scan display at a position corresponding with this element. In response to the video data supplied to the control unit and the brightness data in the random-access memory a logical unit provides new brightness data which overwrites the brightness data in the memory.
摘要:
A receiving antenna connected to a surveillance sensor feeding a target detector. The target detector provides multiple inputs of target reports, azimuth, range and scan count data into a clutter mapper circuit which in turn feeds a track-while-scan circuit feeding a CRT display. The clutter mapper circuit provides improved clutter detection in the presence of scintillating clutter conditions.