SU705483A1 - Data recording device - Google Patents

Description

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705483 key b, digital-to-analog converter 7, frequency divider 8, comparator 9, sweeper shaping unit 10 and gain unit 11 .. The device works as follows. From the voltage source 3, the constant voltage goes to the electrode switchboard of the writing element 4, where it also comes from block 10 triggered by the clock pulse generator. owl 5 through the divider of justice 8, the sweep signal, caused the 1rst ray to run across all the electrodes of the writing element. Clock pulses from clock generator 5 through key 6, which is opened by frequency divider 8, act on switch 4. Clock iJMnyji simultaneously enters digital-to-analog converter 7, on the output of which a linearly increasing step-like analog signal is input to the comparator 9. Research The blown signal enters block 11, where a luminance signal is formed, the amplitude of which is directly proportional to the luminance of the signal under study. In coincidence of the amplitude of the luminance signal and the analog signal, the comparator generates a pulse that closes the key until the next pulse arrives from frequency divider 8. This signal opens switch 6 and simultaneously resets in the digital-to-analog converter 7. The time spans during which key 6 is open , depends on the brightness of the signal under study, as a result of which the duration of the light pulses arriving at the switch 4 electrodes of the recording element and determining the amount of neperiece Horo charge on the carrier.

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Claims (2)

TfTTTTTT is directly proportional to the brightness of the signal under study. Thus, the introduction of new blocks allows to increase the number of gradations of recorded information and the accuracy of their processing, since the recording is made by a constant switching voltage, which eliminates the influence of nonlinearity of the characteristics of the recording path on the recording quality. Apparatus for registering information, comprising a switch connected to a constant voltage source, a writing element and serially connected sweep shaping unit, frequency divider and clock generator, a gain unit connected to the device input, and a key And in order to improve the accuracy of the device, it contains a digital-to-analog converter, connected to a clock generator and a frequency divider, and a comparator connected to Amplifier, to a digital-to-analog converter and to a single key input, the other inputs of which are connected to a frequency divider and a clock generator, and the output is connected to a switch. Sources of information taken into account during the examination 1. USSR author's certificate N 352273, M, cl. G 06 F 3/14, 1972. 2. US patent 3,946,403, cl. 346-74 ,. publish 1976 (prototype).