SU1246416A1 - Device for entering graphic information - Google Patents

Abstract

The invention relates to television. The purpose of the invention is to simplify the device and increase noise immunity. The device contains a storage unit i, a control unit 2, a switch 3, an address counter (C) of reading 4, an address write C 5. The restraint selector 6, consisting of a pulse distributor and a control key block, was reintroduced. shaper of the sequence of personnel pulses, the OR element and the key block for the selection of the mode of operation. With 4, by line and element synchronization signals, entered from the 4th and 5th outputs of block 2, it forms a sequence of addresses of the information recorded in block 1. C 5 contains the cursor position address, which is changed by the operator through the block control keys through the distributor pulses. Commutator 3, in accordance with the control signals from the 2nd and 3rd outputs of block 2, connects to output block 1 output C 4 inside the frame sweep and output C 5 for the duration of a personnel extinguishing pulse. Block 2 on the 1st output sets block 1 to read mode on. frame sweep time and recording mode for a frame damping pulse. Using the key block, the following is provided: graphic input, free movement of the cursor, erasing of graphic information. 2 Il. I (/) INP

Description

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The invention relates to television and can be used in television image analyzers for entering graphic information. The purpose of the invention is to simplify the device and increase noise immunity.

Figure 1 shows the structural electrical circuit of the graphic information input device; Fig. 2 is a structural electrical circuit of a mode selection unit.

The proposed device contains a storage unit 1, a control unit 2, a switch 3, an address counter 4, a write address counter 5 and an operation mode selection block 6 consisting of a distributor 7. pulses, a control key block 8, a generator 9 of frame personnel pulses , element- t. OR 10 and block 11 of keys for selecting the operation mode.

The input device graphic information works as follows.

The address counter 4, by line and element synchronization signals, arrives from the fourth and fifth outputs of block 2, generates a sequence of addresses for reading the information recorded in memory block 1. Address counter 5 contains the address of the cursor position, which can be changed by the operator through block 8 through dispenser 7 pulses. The switch 3, in accordance with the control signals from the second and third outputs of block 2, connects to the address input of the memory unit 1 the output of the address counter 4 inside the frame sweep and the output of the address counter 5 for the time of the frame extinguishing pulse. At the same time, unit 2, by the first output, sets storage unit 1 to read mode at the time of a vertical sweep and write mode at the time of a frame damping pulse.

The operator using block 11 can provide:

1. Enter graphic information. For this, the information input of the storage unit 1 is constantly supplied from the output of the element OR 10 log, and a trail remains behind the cursor after movement. Using the corresponding keys of block 8, the operator has the ability to move the cursor up, down, 5 right, left, as well as across the fa-l m up-left, up-right, down-left, down-right.

2. Free cursor movement. In this mode, a logical 1 is sent to the information input of the memorizing unit 1 during t-1 of television frames and a logical O during one frame, and the address counter 5 is changed after the logical O is written to the breaking unit 1. The intersection with the cursor recorded previously in the line storage unit 1, the erasure of the image element at the intersection point is recurring.

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3. Erasing graphic information. For this purpose, a logical O is set to the information input of the storage unit 1 at the time of a 25-frame scan, and a recording mode is set at the control input.

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Claims (3)

Invention Formula 1, A graphic information input device containing a storage unit, the control and address inputs of which are connected respectively to the first, the output of the control unit and the switch output, to the first and second inputs of which are connected respectively to the outputs of the write and read address counters the fourth inputs are respectively the second and third outputs of the control unit, the fourth and fifth outputs of which are connected respectively to the first and second inputs of the address readout counter, characterized in that In order to simplify and improve noise immunity, a mode selection mode block is entered into it, the first and second outputs of which are connected respectively to the first and second summing inputs of the write address counter, the third and fourth outputs are connected respectively to the first and second subtractive inputs of the address counter records 50 level 1, which, when the 55th output is changed, is connected to the informational content of the address counter 5 to the input of the storage unit, and calls for leaving the recorded value-sixth output - to the input of the unit is controlled by the previous address, i.e. nn 1 when moving the cursor remains a trace. Using the corresponding keys of block 8, the operator has the ability to move the cursor up, down, right, left, as well as along the fa-l dia, up-left, up-right, down-left, down-right. 2. Free cursor movement. In this mode, a logical 1 is sent to the information input of the memorizing unit 1 during t-1 of television frames and a logical O during one frame, and the address counter 5 is changed after the logical O is written to the breaking unit 1. The intersection with the cursor recorded previously in the line storage unit 1, the erasure of the image element at the intersection point is recurring. g 3. Erasing graphic information. For this purpose, a logical O is set to the information input of the storage unit 1 at the time of a frame scan, and a recording mode is set at the control input. Invention Formula 1, A graphic information input device containing a storage unit, the control and address inputs of which are connected respectively to the first, the output of the control unit and the switch output, to the first and second inputs of which are connected respectively to the outputs of the write and read address counters the fourth inputs are respectively the second and third outputs of the control unit, the fourth and fifth outputs of which are connected respectively to the first and second inputs of the address readout counter, characterized in that In order to simplify and improve noise immunity, a mode selection mode block is entered in it, the first and second outputs of which are connected respectively to the first and second summing inputs of the write address counter, the third and fourth outputs are connected respectively to the first and second subtracting inputs of the write address counter . Fifth output is connected to info3 1 2. Device pop.1, which differs from the fact that the operating mode selection unit contains a pulse distributor, the input input circuit of which is connected to the outputs of the key block to control the write address counter, the five pulse distributor input is connected to the output of the sequencer personnel frame pulses and to one of the inputs of the OR element, the other inputs of which are under Connected to the three outputs of the operating mode selection key block, the fourth output of which is connected to the sixth input of the pulse distributor, whose outputs are the first, second, third and fourth outputs of the operating mode selector, the fifth output of which is the output of the OR element, and the sixth output is the fifth output of the operating mode selection key block. FIG. 2