SU1149307A1 - Device for displaying information - Google Patents

Abstract

A DEVICE FOR DISPLAYING INFORMATION containing a gas discharge display panel, voltage generator, first and second address registers, first and second output registers, two RAM blocks, a buffer register, a comparison block, a decoder, a symbol generator, the first and second outputs of which are connected with the first inputs of output registers, the outputs of which are connected to the first and second inputs of the gas-discharge indicator panel, the third input of which is connected to the output of the voltage generator, the output of the buffer register of the connection En with the first input of the comparison unit, the output of the first address register is connected to the first input of the first RAM block, characterized in that, in order to simplify the device, it contains serially connected pulse generator and counter, first and second triggers, first and second elements AND and a fixed memory block, the first input of which is connected to the first inputs of the AND elements and is the first input of the device, the second input of the fixed memory block is connected to the third output of the character generator and the first input of the generator the voltage source, the second input of which is connected to the output of the first trigger, the second input of the counter and the third input of the permanent memory unit, the fourth input of which is connected to the output of the second trigger and the third inputs of the counter and voltage generator, the fourth input of which is connected to the output of the counter, the first output of which is connected to the second inputs of the output registers and the first input of the symbol generator, the second input of which is connected to the output of the pulse generator, the output of the decoder is connected to the second inputs of the elements And, mp These inputs are connected to the outputs of the comparison unit, the second input of which, the first input of the buffer register and the input of the decoder are connected to the second input of the first RAM block and are the second input of the device, the first input of the second flip-flop is connected to the output of the first And element and the second input buffer register, the second (L input of the second trigger is connected to the second output of the counter, the first output of the permanent memory unit is connected to the first input of the first RAM block, the second input of which is connected to the first input the second address register and the fourth generator generator output, and the third input is the third device input, the second output of the permanent memory unit is connected to the third input of the first memory block 4, the first output of which is connected to the third input with its character generator input, the output and the first input of the second memory unit, the second input of which is connected to the third output of the permanent memory unit, the fourth output of which is connected to the second input of the second address register, the output of which is connected to the third im input of the second block of RAM memory, a fifth block output constant memory coupled to a fourth input of the character generator, the sixth output - to a second input of the first flip-flop, and a fifth input - with the output of the first block vtory.m RAM memory.

Description

The invention relates to computing technology and can be used in devices for displaying information built on gas discharge AC display panels.

Display devices are known that use the gas discharge AC display panel as an indication element. These devices are performed with both parallel and serial information output.

Devices with parallel output of information have a higher speed compared with devices of sequential output of information and therefore allow to increase the amount of signographic information both with the mobility of all and part of the displayed elements 1.

The significant drawbacks of these devices are the complexity and cumbersome addressing schemes of the electrodes of the gas discharge display panel; significant current required during recording and, as a result, the reliability of the entire device is low, its weight and dimensions are large.

Devices with a serial information output have a simpler addressing scheme for the electrodes of the gas discharge display panel and a lower current consumption in the recording mode, and consequently, greater reliability and lower weight and dimensions 2.

The disadvantage of such devices is the low speed in the mobility mode of both all the displayed elements and their parts, which limits the amount of signographic elements displayed on the screen and, as a result, the field of application of the devices.

The closest in technical essence to the present invention is a device with a sequential output of information, which has an increased speed, which contains a synchronization unit, first, second and third memory blocks, an interpolator, first and second buffer registers, first and second address registers, gas discharge the display panel, the first and second output registers, the switching unit, the writing unit, the first and second reading units, the comparison unit, the voltage generator, the first, second, third and fourth decoders 3.

A disadvantage of the known device is its complexity, due to the presence of microprogram machines with memory (synchronizer, recording unit, two read blocks), as well as the need to switch the information buses of two RAM switches by switching unit.

The aim of the invention is to simplify the device while maintaining its speed and the amount of output information.

The goal is achieved by the fact that a device for displaying information comprising a gas discharge indicator panel, a voltage generator, first and second address registers, first and second output registers, two RAM blocks, a buffer register, a comparison block, a decoder, a symbol generator, the first and second outputs of which are connected to the first inputs of output registers, the outputs of which are connected to the first and second inputs of the gas discharge display panel, the third input of which is connected to the output of a voltage generator the output of the buffer register is connected to the first input of the comparison unit, the output of the first address register is connected to the first input of the first RAM block, contains a series-connected pulse generator and a counter, the first and second triggers, the first and second And elements, and a permanent memory block, the first input of which is connected to the first inputs of the elements AND is the first input of the device, the second input of the fixed memory unit is connected to the third output of the symbol generator and the first input of the voltage generator, the second input D which is connected to the output of the first trigger, the second input of the counter and the third input of the permanent memory unit, the fourth input of which is connected to the output of the second trigger and the third inputs of the counter and voltage generator, the fourth input of which is connected to the second inputs of the output registers and the first input of the symbol generator, the second input of which is connected to the output of the pulse generator, the output of the decoder is connected to the second inputs of the AND elements, the third inputs of which are connected The outputs of the comparison unit, the second input of which, the first input of the buffer register and the input of the decoder are connected to the second input of the first memory block and are the second input of the device, the first input of the second trigger is connected to the output of the first And element and the second input of the buffer register, the second the second trigger input is connected to the second counter output, the first output of the permanent memory unit is connected to the first input of the first memory block, the second input of which is connected to the first input of the second address register the fourth output of the symbol generator, and the third input is the third input of the device, the second output of the permanent memory unit is connected to the third input of the first RAM block, the first output of which is connected to the third input of the symbol generator, the output and the first input of the second RAM block , the second input of which is connected to the third output of the constant memory unit, the fourth output of which is connected to the second input of the second address register, the output of which is connected to the third input of the second operational memory block The fifth, fifth output of the fixed memory unit is connected to the fourth input of the symbol generator, the sixth output to the second input of the first trigger, and the fifth input to the second output of the first random access memory unit. FIG. 1 is a diagram of the proposed device; in fig. 2 - symbol generator; in fig. 3 and 4 - diagrams; the device contains a buffer register 1, a decoder 2, a comparison block 3, a fixed memory block 4, a first AND 5 element, a second AND 6 element, a first address register 7, a first RAM block 8, a second block 9 RAM, second address register 10, second trigger 11, trigger 12, pulse generator 13, counter 14, voltage generator 15, gas discharge display panel (GUI) 16, output registers 17 and 18, generator 19 characters, first-n input inputs 20–24 of the permanent memory unit, first to sixth outputs 25–30 of the permanent memory unit and, the first to fourth inputs 31-34 of the character generator, the first fourth outputs 35-38 of the character generator, the first to third inputs 39-41 of the device. The generator 19 symbols (Fig. 2) contains the element NOT 42, the second decoder 43, the third and fourth elements And 44 and 45, registers 46-48, counters 49 and 50, multiplexers 51-54, ROM 55 micro-instructions, ROM 56 sine cosines , ROM 57 characters, block 58 of registers, fifth, sixth and seventh elements AND 59-61, arithmetic unit 62, element OR 63, third trigger 64. In FIG. Figures 3 and 4 show the voltage diagrams at the outputs of the fixed memory block 4. FIG. Figure 3 shows the next, and other time intervals of the device operation: to-t — input of initial data for displaying the signographic information from an external calculator, and during the input process, the code of the frame number (moment ii) changes and in the time interval there is a complete erasure of the indicator displayed on the gas discharge information panels; tj-tj - recording on the screen of the gas discharge panel of the new mobile and new fixed information. The initial data of the signographic image is read from block 8, and simultaneous recording of the source data of the visually information is carried out in block 9 (interval t3-U). FIG. 4 shows time slots: tfc-1 — input of input data from an external calculator, while the code for the frame number does not change during data input; tj-tj — erasing from the screen of the gas-discharge display panel of old mobile information; tg-tg - recording new mobile information on the screen; tg-1ts | - resumption on the screen of erased dots of still elements of the image. The moments ts (Fig. 3) and tiQ (Fig. 4) are the transition of the device to the storage mode of the information recorded on the GUI screen. The sign information information is displayed on the screen of the gas-discharge AC display panel 16, operating in the following modes: "Record - point-by-point ignition of the image elements; “Erasure is point by point quenching; “Complete erasure - complete cancellation of all elements of the sign information; "Storage - the image recorded on the screen is stored without change due to the fact that the panel has a memory of the display element. The voltage generator 15 is designed to form the power supply voltage of the gas discharge display panel 16, corresponding to the Record, Erase, Full Erase, as well as temporary timing of these voltages, which is set by the counter 14 with a variable, depending on the mode accounts. The generator 19 of a subvol is intended to form images of vectors, circles, arcs, symbols, texts. Calculated by the generator of 19 symbols, the coordinates of the current points of the signographic image are stored in output registers 17 and 18. The first and second blocks 8 and 9 of the RAM are designed to store the original data needed by the generator of 19 characters to form a character image. The first block 8 stores information recorded by the external computer in the current time cycle: non-operational information is fixed, not changeable throughout the entire frame display time (for example, images of scales and their digitization, lines of a given path, intermediate waypoints, restricted areas and t .P.); real-time information is mobile, changeable during the frame display time (for example, reference indexes of scales, a marker indicating the position of an aircraft whose position changes over time). In the second block 9, operational (mobile) information is stored corresponding to the previous time cycle. The first and second address registers 7 and 10 are designed to store the current address of blocks 8 and 9, respectively. Each frame of the sign information is assigned its own number (frame number code), which is stored in buffer register 1. Comparison unit 3 is designed for comparing frame number codes — the current one (displayed on the gas discharge display panel 16) and recorded by the external calculator in block 8. The pulse generator 13 and the counter 14 are designed to synchronize the operation of the entire device. The decoder 2, the elements And 5 and 6, the block of permanent memory, the triggers And 12 are designed for logical control of the entire device. The device operates in the following modes: receiving source data to form a signographic image from an external computer; recording on the screen of the gas discharge display panel of the new mobile and new fixed information (the device switches to this mode of operation in the case of a full frame of the image when the initial data is entered from the calculator); erasing the old moving information from the screen, recording the new moving information and resuming the erased points of the still elements of the image (the device switches to this mode of operation if the Lyster changed the moving information of the displayed frame and the frame number remained the same). When the device operates in the mode of receiving source data from the calculator, the "Input of data." Signal is received from the external calculator to the address input of memory block 4 and the first inputs of the And 5 and B elements. According to this signal, block 4, by its output signals, prohibits the generator of 19 symbols from sampling the original data to form an image from blocks 8 and 9 (the signal “Resolution; coming from the output of block 4 to the input of the generator 19 symbols -“ Log. O ”) switches the control inputs block 8 to write data; allows parallel writing of the address from the external computer to the address register 7; zeroed the second address register 10; switches the memory unit 9 to a high impedance state at its output. The external computer, by changing the address at the input of the address register 7, writes the source data to form a character image. The input data simultaneously arrive at the input of the buffer register 1 and at the input of the comparison unit 3. In the input information array, there is a word (usually written first) containing the frame number code. When this word arrives at the input of the device, the signal "Log." Appears at the output of the decoder 2. 1, arriving at the second inputs of the And 5 and 6 elements. Comparison unit 3 compares the code of the frame number entered by the external computer and the code of the frame number currently displayed on the screen This indicator panel 16 is stored in buffer register 1. When the frame number codes are unequal (displayed and entered), the signal "Log. 1, which records the new frame number to the buffer register 1 and sets trigger 11. At the same time, from the output of trigger 11, the inputs of counter 14, voltage generator 15, and block 4 receive a signal indicating that the frame number has changed and that it has to be completely erased information. From the output of the voltage generator 15, a voltage corresponding to full erasure is applied to the input of the gas discharge display panel 16. At the same time, while continuing to enter data from the external computer, in block 8, the information from the gas discharge display panel 16 is completely erased. After the time cycle of complete erasure is complete, the output of the counter 14 causes an overflow signal that resets the trigger 11. When the code number is equal (in the visible and displayed) at the output of the element And 5 there is a signal "Log. Oh, and at the output of the element 6 - the signal "Log. 1 which establishes the trigger 12. The information words written in block 8 contain the data needed by the 19-character generator to form vectors, circles, arcs, signs, texts. For the formation of the vector, a vector code, starting coordinates, a slope angle and a length are recorded. To form a circle, its code, center coordinates and radius value are recorded. To form the arc, its code, center coordinates, radius value, starting and ending central angles are recorded. To form a text, its initial coordinates and a list of character codes included in it are recorded. A list of all the original image data recorded in block 8 ends with the special feature "End of array. Each informational word has a “mobility bit. “Log. 1 in this bit indicates that this image element is related to mobile information, and "Log. About - to motionless. The input of all the original data from the external computer ends with the entry in the address register 7 of the initial address of the data sample for the 19-character generator. The completion of data input from the external computer is indicated by the removal of the data input signal. In the mode of recording on the screen of the gas-discharge indicator panel 16 of the new mobile and new fixed information device

proceeds if during the data input process from the calculator the frame number code has changed and the information has been completely erased. In this case, after entering the data, the outputs of the triggers 11 and 12 contain the signals “Log. O, coming to the address inputs of block 4. At the same time, from the outputs of block 4, signals to the input of the 19-character generator are received — a signal to enable the source data to be sampled from the memory block to form a character image; to the input of the address register 7 - the signal for the resolution of the account; to the control input of block 8 is a signal that permits reading from the RAM block.

The generator of 19 characters selects the first information word from block 8. If in this word there is a “Log. 1, then the signals from block 4 record this word in block 9 and provide the resolution of the count to the address register 10.

The generator of 19 characters processes the selected information word, gives a counting pulse to the inputs of the address registers 7 and 10.

The coordinates of the symbolographic image of the overflow pulses from the counter 14 calculated by the generator 19 symbols are written into the output registers 17 and 18. Moreover, the time interval between adjacent overflow pulses from the counter 14 corresponds to the time required for the voltage generator 15 to record the point on the gas discharge display panel 16. In addition, in the interval between these adjacent pulses, the generator of 19 symbols calculates the coordinates of the current image point.

The completion of the mural of the entire image frame corresponds to the sign “End of Array. This signal from the generator output of 19 symbols is fed to the input of block 4 and to the input of the generator of 15 voltages. The voltage generator 15 supplies the gas-discharge display panel 16 with voltages corresponding to the storage of information recorded on the screen, and unit 4 switches the entire device to the mode of waiting for the next data entry from the external computer (the enable signal from the unit 8 is removed to the generator of 19 characters; blocks 8 and 9 are switched to high impedance at the outputs).

Thus, the operation of the device in the recording mode of new mobile and new stationary information ends with outputting the entire image frame to the screen and overwriting from block 8 to block 9 of the entire mobile information array of the displayed frame.

The operation of the device in the mode of erasing the old mobile information from the screen, recording the new mobile information and resuming the erased points of the fixed information is preceded by the described data entry from the external computer, but the frame number code does not change (all the still image remains the same), and only the modified ones come from the computer raw data moving information. Wherein

0 after entering the data at the output of the trigger 11 there is a signal "Log. Oh, and at the output of trigger 12 - the signal "Log. 1. These signals are fed to the input of block 4, the signals at the output of which prohibit the counting of the register

5 7 addresses; block 8 is brought into high impedance state at the output; reading from old mobile information block 9 (information displayed on the screen and corresponding to the operation time cycle before data entry is allowed); resolving the address register 10 is permitted; It is allowed to sample the source data from block 9 to the 19-character generator.

Simultaneously, the signals from the outputs of the trigger 11 and 12 are fed to the input of the generator

5–15 voltages, and the inputs to the gas discharge display panel 16 receive voltages corresponding to the erasure of information.

The generator 19 of symbols sequentially selects from block 9 the initial data of the elements of the old moving information and calculates the coordinates of the points of these elements. Thus, point-to-point erasure of the old mobile information elements from the screen is performed, after completion of which the output

 Generator 19 characters Wits signal "Log. 1, “End of array. This signal will change the address of the block 4 of the permanent memory and at its output, in tc, the reset signals of the trigger 12, the reset of the register 10 of the address and

0 converting block 9 to high impedance state at the output.

At the same time, trigger 12 will be reset, the “End of array” signal will become “Log. O (removed). Now at the outputs of the triggers 11 and 12 there are signals

 “Log. O, which corresponds to the described mode of recording new mobile and new fixed information. At the same time, new mobile information will be recorded on the gas discharge display panel screen.

0 16 at simultaneous rewriting of mobile information from block 8 to block 9, and also the resumption of the fixed information points (intersection points of the old mobile and fixed

5 information).

It should be noted that in the total amount of information displayed, information on

The moving image elements occupy an insignificant part, as a rule, not more than 1/5. Therefore, if during the critical period of flashing Tdr of 20 ms to erase moving elements to take 10 ms and as much to record them, then at the time required to highlight one point of the Type 20 ISS, the total number of highlighted points in the array of moving elements

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The number of points in the array of fixed elements can be

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and the number of erased points from this array does not exceed 1-5.

Resumption of the erased points occurs during the time interval of Tvozb TkrH 5 10 ms.

Due to the fact that the number of erased points is small, despite the Tovzovn. cr. the process of resuming points is invisible to the operator's eye.

The use of the proposed technical solution makes it possible to simplify and at the same time maintain the speed of the display device with an AC gas discharge display panel operating on the principle of sequential image recording and for cases when this image consists of moving and stationary elements. This makes it possible to reduce the weight and size of the entire display system, to increase its reliability and, thereby, to expand the field of application by using it on small-sized vehicles.

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Claims (1)

INFORMATION DISPLAY DEVICE comprising a gas discharge indicator panel, a voltage generator, first and second address registers, first and second output registers, two RAM blocks, a buffer register, a comparison unit, a decoder, a symbol generator, the first and second outputs of which are connected to the first inputs output registers, the outputs of which are connected to the first and second inputs of the gas discharge indicator panel, the third input of which is connected to the output of the voltage generator, the output of the buffer register is connected to by the input of the comparison unit, the output of the first address register is connected to the first input of the first RAM unit, characterized in that, in order to simplify the device, it contains series-connected pulse generator and counter, the first and second triggers, the first and second AND elements, and the constant block memory, the first input of which is connected to the first inputs of AND elements and is the first input of the device, the second input of the read-only memory block is connected to the third output of the symbol generator and the first input of the voltage generator the second input of which is connected to the output of the first trigger, the second input of the counter and the third input of the read-only memory block, the fourth input of which is connected to the output of the second trigger and the third inputs of the counter and voltage generator, the fourth input of which is connected to the output of the counter, the first output of which is connected to the second inputs of the output registers and the first input of the symbol generator, the second input of which is connected to the output of the pulse generator, the decoder output is connected to the second inputs of AND elements, the third inputs of which are are single with the outputs of the comparison unit, the second input of which, the first input of the buffer register and the decoder input are connected to the second input of the first RAM block and are the second input of the device, the first input of the second trigger is connected to the output of the first AND element and the second input of the buffer register, the second input of the second the trigger is connected to the second output of the counter, the first output of the read-only memory block is connected to the first input of the first random access memory block, the second input of which is connected to the first input of the second address register and the fourth output of the symbol generator, and the third input is the third input of the device, the second output of the read-only memory block is connected to the third input of the first random access memory block, the first output of which is connected to the third input of the character generator, the output and the first input of the second random access memory block, the second input which is connected to the third output of the permanent memory block, the fourth output of which is connected to the second input of the second address register, the output of which is connected to the third input of the second block of random access memory and, the fifth output of the read-only memory block is connected to the fourth input of the symbol generator, the sixth output to the second input of the first trigger, and the fifth input to the second output of the first RAM block.