SU943782A1 - Device for controlling telegraph apparatus - Google Patents

Description

one

The invention relates to the field of automation and computer technology, in particular to telegraph devices with mosaic printing.

Mosaic-type printing devices are known, comprising a print head with a vertical row of printing needles, a print head advancing control unit, a print control unit.

In these devices, marks are formed in matrices of the same width, so the print cycle is constant.

The closest to the proposed technical entity is a device for controlling the mosaic printing of a telegraph apparatus, containing the first decoder, the first trigger, the first counter and the block of permanent memory .20

The disadvantage of this device is associated with the use of one counter, as a result of which all printable characters are the same in width.

The purpose of the invention is to improve the printing quality by forming marks of different widths.

This goal is achieved by introducing a second counter, an inverter, a reference element, a second trigger, a second decoder, the first output of which is connected to the first input of the second trigger, into the device containing the constant memory block, the first decoder, the first counter and the first trigger. and the second output is with the second input of the same trigger, the output of which is connected to one input of the comparison element, and the output of the first trigger to another input of the comparison element, you), one comparison element is connected to the second counter and inverter, the output of which is connected Inen with the first counter, the output of the first counter is connected to the input of the memory block, the second input of which is connected to the output of the second counter, the outputs of the first decoder are connected to the corresponding inputs of the first trigger,

The drawing shows a functional diagram of the device.

The device for controlling the telegraphic apparatus M comprises a first decoder 1, a first trigger 2, an element of comparison 3, a second decoder k, a second trigger 5 a second counter 6, an inverter 7, a first counter 8, a permanent memory block 9.

The first trigger 2 performs the function of the register combination memory element. For example, when mixed printing with letters of the Russian alphabet and numbers, its status represents one of two possible commands: Rus. - Digital .. In this case, the state of the second trigger 5 displays the command for printing either code combinations No. 4, If 6, No. 22, tf 2 $, corresponding to the wide D, F, F, and S signs, or code combinations No. 7 iT 8, ff 9, which correspond to the wide signs W, W and Y. The capacity of the first counter 8 corresponds to the number of rows forming a narrow (mosaic) sign, the capacity of the second count 6 is chosen in accordance with the number of rows in a wide sign. The device works as follows. The first trigger 2 is set to one if the first decoder 1 decrypts the combination of Rus and zeroes if the combination Dig is received. The second trigger 5 is set to one if the second decoder issued a signal to accept combinations of N 7, No. 8 or No. 10, and to zero if one of the combinations No. 4, M 6, f 22, W 25 is received. With triggers 2 and 5 signals are sent to the element of comparison 3 which analyzes the combination of the states of the flip-flops 2 and 5 and outputs the signals for the start of the second counter 6 or (by means of the inverter 7) of the counter 8.

The use of the proposed device in the printing units of telegraph apparatus ensures the preservation of the normal ratio of the width of narrow and wide letters, as well as the normalization of letter spacing around wide letters.

These improvements in print quality can reduce operator fatigue while reading text and increase their productivity.

Claims (2)

Invention Formula A telegraph device control device comprising a fixed memory unit, a first decoder, a first counter and a first trigger, characterized in that, in order to improve print quality by forming characters of different widths, a second counter, an inverter, a reference element, a second the trigger, the second decoder, the first output of which is connected to the first input of the second trigger, and the second output - to the second input of the same trigger, the output of which is connected to one input of the comparison element, and the output of the first trigger - with other By the input of the comparison element, the output of the comparison element is connected to the second counter and the inverter, the output of which is connected to the first counter, the output of the first counter is connected to the input of the permanent memory unit, the second input of which is connected to the output of the second counter, the outputs of the first decoder are connected to the corresponding inputs first trigger. Information sources, . taken into account during the examination 1. U.S. Pat. No. 3,833,891, Cl. G 06 K 15/10, published. 1979 2. Service manual 22, stac 4 0152, Provisional edition, 1975 (npo | totip), 6