SU777689A1 - Device for reproducing multichannel pulse information from magnetic carrier - Google Patents

Description

OR and consisting of a series of connected forms: control pulses and a shift register; electrical targets, the number of channels is equal to the number of channels, and each of the signal processing units is made of an inverter, two coincidence elements and an autonomous element; OR, the first input of the first element connected to the output of the corresponding reproduction head, its second input is connected to the gate input of the control pulse former, the clock inputs of which are connected to the channel selection unit and through an inverter with a second gate input of the control pulse generator and a corresponding output of the channel selection block, as well as the input of the second co-ownership element, and the outputs of both coincidence elements through the stand-alone OR element are connected to the information input of the corresponding -shift register, the output of which is connected to the second the input of the second element of the condominium and through the common element OR with the input of the information display unit.

-The drawing shows a structural diagram of the proposed device.

The signal from the generator / is fed into the channel selection block 2, which produces gating pulses of the lines (. Channels) and clock pulses for recording and reproducing with the corresponding -speaking channel pulses. The signals from the outputs of the playback amplifiers 3 are sent to the corresponding information processing units 4 and, with the arrival of enabling pulse-to-strobe signals from block 2, are sent to the information input of the shift register 5, the shift clock input of which is connected, to the output of the 6 jmpaB clock pulse generator. The number of p-bit bits is chosen equal to the number of displayed code signals in one line of the screen.

The outputs of the shift registers are connected, through the common element ILR1. To the input of the display unit 8 .in (form, made in the form of a single-channel kinescope.

The information processing unit 4 is made of an inverter 9, two elements 10 and // coincidence, and an autonomous element OR 12. The amplifiers 3 in question are connected to the heads 13. The control driver 6 can be sent out one on the logical elements OR and I. - The second input of the second element AND 10 is connected to the output of the shift register and with the gate of the corresponding channel through the element OR 12 is fed to the input of the register. Such a register -c feedback is necessary to exclude noTeipH information and read information. If at the same time to prohibit the arrival on the information entry register new

information, then the same information will be read from the registers, i.e. the freeze mode will be implemented.

The control impulse generator 6 distributes, in accordance with the strobe of this channel, the clock and write and read pulses from the output of the circuit to the control input of the shift register in time.

The device works as follows.

The signals from the playback heads 13 are amplified in the 3-amp amplifiers, gated by the pulse-strobe of the corresponding channel from the channel selector block 2 and recorded in the shift registers 5. The recording time in the registers corresponds to the frame duration minus the duration of the strobe-pulse of the corresponding channel . The duration of the strobe-pulse of one channel is equal to the ratio of the duration of the frame to the number of channels corresponding to the lines on the screen of the information display unit. When reading

the information register prohibits the recording of new information in it, and the feedback loop makes it possible to record previously recorded information.

1 Since the frequency of clock pulses

the readout is many times greater (by the SSSL time) the frequency of the write clock pulses, then through the feedback circuit, the previously recorded information is restored. | Number of clock pulses

read from the register in the strobe pulse is equal to the number of register bits. So, the signals from the outputs of the registers are alternately received through the OR element and displayed on the screen at the corresponding

lines. The frame rate is chosen taking into account the inertia of the detector in the operator. For synchronous operation of the display device 8 with the corresponding channel registers, the channel selection unit 2 generates frame and line sync pulses that are fed to the display unit sweep generators.

In this way, the remote device allows one to visualize an almost unlimited number of channels / information at a time and with a sufficient number of code signals for analysis in each channel. The device has a simpler design, since -n-mn is not required ) chevy oscilloscope. In addition, the device allows freeze mode.

Claims (1)

Formula invented n and A device for reproducing multichannel pulsed information from a magnetic carrier, containing magnetic reproduction heads, the number of which is equal to the number of channels, is connected