SU741293A1 - Device for displaying information on crt screens - Google Patents

Description

The goal is achieved by introducing an exchange control block, a raster zone illumination driver, a switch connected to a synchronization block, a register connected to a coincidence block to an exchange control block connected to a comparison, matching block and an input of an iCTBa switch to the device. connected to the sublight beam control unit, the raster zone illumination driver and the television receivers to the beam backlight control unit.

FIG. 1 shows a block diagram of the proposed device in FIG. 2, examples of displayed on the screens of display units of image fragments in the coordinate-sign display mode and in the modes of displaying table-text information.

The device comprises an exchange control unit 1, a coincidence unit 2, a memory unit 3, a 4-character generator, a beam illumination control unit 5, a switch b, television receivers 7, a raster illumination generator 8, a register 9, a synchronization unit 10, a comparison unit 11, - input of exchange control signals 12, output of exchange control signals 13, information input of the device 14.

The device works as follows.

The exchange control unit 1 provides the organization of receiving, by input 1, an information message on the communication system of the standart interface.

In response to the source exchange control signals arriving at the input 12 in accordance with the signals of the synchronization unit 10 and the control signal from the comparison unit 11, generated by the instant of coincidence of the high-order bits of the coordinate part of the information message (symbolic defining zone), and current codes raster decomposition from the synchronization unit 10, the exchange control unit 1 generates at the output 13 a receiver exchange control signal and a recording enable signal of the incoming information data through the coincidence unit 2 in memory block 3 the string and the register 9, and the register 9 records the service codes of the display mode (coordinate-sign or tabular-text display), as well as the mode of decoding the signs, extracting the generated data, which allow expanding the nomenclature without increasing the volume of the indicative part of the memory block 3 methods for identifying the generated symbols. In the mode of a coordinate-sign display (Fig. 2a), codes 1 of the lower positions of the coordinate marks are recorded in 1 of the array of memory block 3 at selected addresses (for

The survey is considered as character codes of a point located in accordance with the code in various places of the raster of the matrix simvrlopol) and character codes together with the signs of their marked allocation. When polling memory block 3 in accordance with the address code arriving from synchronization unit 10, character codes are input to a 4-character generator, where, in accordance with the line code received from synchronization unit 10, the binary code is converted to the corresponding line character.

The 4 symbols of the video sub-light of the coordinate points and symbols generated at the generator output go to the beam illumination control unit 5. Simultaneously with the feature code from memory block 3, a command for decoding features is sent from register 9, allowing the selection of characters in two or more ways in the presence of a single feature signal, for example, blinking, flickering or backlighting, static and dynamic symbol tilt or simply changing the counter reverse, etc., i.e. in ways that are most convenient when displayed in one or another display mode.

From the output of the illumination control unit 5 of the conversion beam, the video information enters the switch 6, where the resolution command from the register 9 is mixed with the video light coming from the illuminator 8 of the raster zones, if present. These video sublights can be sections of horizontal and vertical stripes and lines, the corresponding switching of which provides a variety of illumination shapes, some fragments of variants of which are shown in FIG. 2c. In the display mode of tabular and textual information, switch 6 also provides distribution of video information by 2 outputs to two television receivers 7, each of which displays various information by switching video information of even lines to one television receiver, and odd lines to the other (Fig. 2b, c) In the mode of coordinate-sign mapping, both television receivers highlight the same information.

Claims (2)

The proposed device can have, by additionally encoding, features for selecting a large range of methods for encoding the displayed data, serve two display devices on a CRT, form a backlight zone with a raster to highlight inscriptions on a photo pattern of table forms imposed on a CRT screen. In the coordinate-sign mode, the device in comparison with the existing functional indicators. Due to the use of the progressive raster principle of information formation, you can use a standard television receiver or an internal control unit as an indication unit, use the advantages of the television method: easily mix the generated information with auxiliary video information (cartographic background, coordinate grid, scale frames, etc.); multiply the video information on a number of display devices and transmit it over long distances, etc. The proposed device provides an increase in the capacity of the path of the coordinate-sign formation by eliminating the waiting time for the moment of illumination of the coordinate mark, reduces the likelihood of overlapping sign formulas accompanying the coordinate mark, since the transition of the formula to the new position is performed only when the transition of the coordinate mark from the zone of one symbolopol to the zone of another, while in the known device the formulas constantly accompany the movements of the coordinate mark, which Chiva probability or their partial superimposing polnogi. These advantages provide a wider range of use and wide functionality of the proposed device. Formula of the Invention A device for displaying information on television receivers' screens, comprising a series-connected coincidence unit, connected to the device input, a memory unit, a symbol generator, and a beam illuminated yrtrav unit connected to synchronization unit connected to television, receivers and unit: compare,. connected to the input of the device, characterized in that, in order to expand the field of application of the device due to the possibility of forming the illumination of the raster zones, the exchange control unit, the raster zone illuminator, the switch connected to the synchronization unit, the register connected to the coincidence unit, are inserted into the hard disk, to the exchange control unit connected to the comparison, coincidence units and to the device input, to the switch connected to the beam illumination control unit, the raster zone illuminator and television sets Receptionists to the beam illumination control unit. Sources of information taken into account in examination 1, UK Patent 1293506, cl. H 4 T, 1972. 2. Authors certificate of the USSR 506031, cl. G 06 K 15/20, 1974 (prototype).