SU436370A1 - DEVICE FOR INDICATION - Google Patents

Description

one

The invention relates to the field of radio engineering and can be used in information display devices in television mode.

A device for indication is known, which contains a gas-discharge indicator nel with a matrix of coordinate buses, a reference generator, connected via a pulse shaper to a descrambler, whose outputs are connected to keys, a synchronizer, and a video signal sensor1c.

The disadvantage of the known device is the limited information recording speed and low reliability, since the maximum recording speed of information on the gas discharge display panel is determined by the minimum duration of the firing pulse required for reliable excitation of the selected panel element, and is usually 0.4-0, 8 microseconds

With a line-frame scan of the image, the recording time of one frame is significant, which leads to flickering of the image.

The purpose of the invention is to improve the speed and reliability of the device.

This is achieved by the fact that registers and coincidence circuits are entered in the device, the first inputs of which are connected to the same keys.

and the second inputs of the corresponding coincidence circuits are connected via other keys to the registers connected to the video pulse sensor and the synchronizer.

Input information is alternately written to one of two high-speed memory registers. When writing information to the first register, information is overwritten from the second register to the panel and vice versa. The speed of the device is not determined by the parameters of the gas discharge panel, but by the speed of the registers, which can be chosen to be very large, for example, such as is necessary for the operation of the IB standard television mode.

The drawing shows the scheme of the proposed device for display.

The proposed display device includes a video pulse sensor 1, a gas discharge display panel 2 with two sets of coordinate women 3 and 4, a reference voltage generator 5, a pulse generator 6, a synchronizer 7, and tire sampling systems 8 and 9 for each coordinate containing electronic keys 10-12, decoder 13, matching circuits 14 to two inputs and two registers 15 and 16 of memory.

The synchronizer 7 includes a generator 17 clock frequency, the source lowercase

and personnel clock pulses 18, binary

an immersion counter 19 and a register control pulse switch 20 comprising two matching circuits 31 and 22 and an inverter 23.

The system of sampling tires 8 to the coordinate, directed along the lines between the electronic keys 10-12 and the selection of coordinate buses 3 of panel 2, contains on each bus 3 a coincidence circuit 14 and two inputs. The first inputs are combined in groups and connected to the outputs of the decoder 13 via electronic keys 12, the second inputs of the same name circuits of coincidence of odd and even groups of coincidence circuits are connected separately and connected via electronic keys 10 and 11 to the outputs of two registers 15 and 16 with sequential write, whose recording inputs connected to the sensor of video pulses 1, and the control inputs to the switch 20 of the control pulses of the synchronizer registers 7.

In the synchronizer 7, the generator 17 is connected to the switch 20 and the counting input of the counter 19. The source of horizontal and frame sync. 9 | 1 pulses 18 by the output of the synchronizing pulse line. connected to the counter input of the counter 19, the output of the pause pulse between the lines is connected to the switch 20, and 1 OUTPUT of the frame sync pulse to the bus select system 9 in the lines. The code outputs of the counter 19 are connected to the switch 20, the igniter pulse generator 6 and the reference voltage generator 5. The reference voltage generator 5 is connected to the ignition pulse driver. The output of the ignition pulses is one coordinate through the decomp. 13, electronic keys 12 and the matching circuit 14 is connected to the set of tires 3 of the panel 2.

The output of ignition pulses at another coordinate through the system of sampling of women 9 but the lines are connected to the “set of tires 4 of panel 2.

The display device operates as follows.

The sensor of video pulses 1 generates a sequence of pulses, combinations of temporal positions of which characterize the information to be displayed along the line of the gas discharge panel 2.

The pulses from the sensor are fed to registers 15 and 16 with sequential recording and parallel output. Pulse code combinations are written either to the register of 15 odd groups or to the register of 16 even groups.

The write alternation is performed using the control pulse switch 20, which passes control pulses to the control input of the register 15, or "and the control input of the register 16. After filling one register 15, the information begins to be recorded in another register 16 and vice versa, and the information from the filled the register in parallel across all bits (group) is rewritten to the line selected by the tire selection system 9 in rows. The sampling of groups of units is performed by the decryptor 13, which is controlled by the counter 19. The outputs of the registers 15 and 16 and the decoder 13 through the corresponding electronic keys 10-12 control the matching circuits 14. If there is a resolution level, the voltage on the first and second inputs of the coincidence circuit the igniter pulse of the driver 6 through the decoder 13, the electronic keys 12 and the coincidence circuit falls on one of

groups of tires and podzhtsgat selected items line. The discharge is maintained by the reference voltage generator 5, whose voltage pulses through the igniter pulse generator and the system

Selections of tires 9 in rows are always received on tires 4 of panel 2. Information from the first register 15 is rewritten into odd groups of tires, and information from the second register 16 is copied into even groups of tires.

The switching is performed by decoder 13, which decrypts the high-order code of counter 19 to the position code of the group. The counter 19 counts the pulses generated by the generator 17. Setting the counter 19 to the zero state is performed at the beginning of each line by a line synchronization pulse coming from the source of horizontal and frame sync pulses 18, during the pause between the lines

the output of which produces a pulse that prevents the passage of control pulses to registers 16 and 15 using a switch 20, to the input of which clock pulses are received from generator 17.

The system of tire sampling in rows is carried out by personnel sync pulses and pulse firing pulse output from the former 6. Alternately, the groups are podzhng

elements of the line and switch elements of the line on the gas discharge panel, receive the image.

Erasing an image can be done by one of the known methods.

The proposed display device allows reproducing images on a gas discharge panel in a standard television mode.

Subject and title

A display device comprising a gas-discharge indicator panel with a coordinate busbar matrix, a reference generator, connected via a pulse generator with a decoder, whose outputs are connected to keys, a synchronizer and a video pulse sensor, characterized in that, in order to increase speed and reliability devices it

contains registers and coincidence circuits, the first inputs of which are connected to one key, the second inputs of the corresponding coincidence circuits via other keys are connected to the registers connected to the video impulse sensor and the synchronizer.