SU1476532A1 - Device for controlling editing of video phonograms - Google Patents

Abstract

The invention relates to devices for controlling the installation of video phonograms using video recorders. The purpose of the invention is to improve the accuracy of installation. The device contains two VCRs 1, 2, each of which contains a control unit, a tape counter 9, a control unit 7, first and second logic elements 5 and 6, a reversible counter 10, a control unit, a correction unit 4, connected in series timer 11, an OR element 12, a divider by two 13, the element And 14 and the binary-decimal counter 15, as well as the first and second triggers 16, 18 and the delay line 17. The VCR sets the tape so that at its subsequent launch to the place of installation (electronic gluing) passed a strictly defined time It is specified by timer 11. To do this, the tape travel time is preliminarily determined from the start time to the mounting point by a command from the first logic element 5 and the time of timer 11, and then eliminated using correction block 4. 1 il.

Description

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The invention relates to instrumentation, in particular, to devices for controlling the electronic installation of video phonograms using video recorders.

The purpose of the invention is to improve the accuracy of installation

The drawing shows a block diagram of a device for controlling the installation of video phonograms.

The device contains video recorders 1 and 2, each of which contains serially connected control panel 3, correction block 4, first 5 and second 6 logic elements and control block 7, as well as control block 8, the inputs of which are connected to the second outputs of control panel 3, respectively the first 5 and second 6 elements, a tape counter 9, an output connected to the second input of the first element 5, the third input and output of which are connected to a reversible counter 10, and the fourth input to the third output of the control panel 3, the fourth output connected to the second input of the second logic element 6, while the first input and the fifth output of the remote control 3 of the first VCR 1 are connected respectively to the fifth output and the first input of the remote control 3 of the second VCR 2.

Each video recorder also contains a series-connected timer 11, an element OR 12, a divider 13 into two, an element 14 and a binary-decimal counter 15, as well as a pen

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left RS flip-flop 16, the first input connected to the output of timer 11, serially connected delay line 17 and the second RS flip-flop 18, output connected to the second inputs of divider 13 for two and binary-decimal counter 15, the output of which is connected to the first input of the block 4 of the correction, the second input connected to the output of the first RS flip-flop 16, the output of the tape counter 9 is connected to the second input of the element 14, the sixth output of the control panel 3 is connected to the second inputs of the timer 11 and the RS flip-flop 18, the output of the timer 11 is connected to the input line 17 delay the third input of the second logic element 6, the second inputs of the OR gate 12 and the first RS-flip-flop 16 are connected to the fourth output of the first NAND gate 5.

The device control installation of videograms works as follows.

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Initially, the operator lays out (prepares) the video phonogram on a single VCR, for example, 1. 0 This happens as follows. The operator, when playing a video record at the time selected for the electronic gluing site, from the control panel 3, sends a command to the first logic element 5, which sets the reversible counter 10 to the initial position. The information about the position of the magnetic tape passes from the tape counter 9 to the logic element 5, and in counter 1.0, the number of pulses is counted in proportion to the speed of the tape.

 At the second moment of time, the first logic element 5 issues a command to control unit 8 to switch on the Rewind mode. At the third time point, the logic element 5 issues a command to block 8 to activate the Playback mode. At the fourth time point, element 5 issues a command to block 8 to activate the Stop mode. The VCR 1 stops the tape with a specified advance in relation to the location of the electronic splicing. The operator can view the marked place of electronic gluing. To do this, it turns on the Play mode. At the fifth time point, element 5 issues a command to the second logic element 6 to switch the video monitoring device. Element 6 delays this command, and at the time corresponding to the first tape, switches the video monitor in block 7 of the control. The place of electronic gluing can also be marked by a tone. In addition, element 6 allows adjusting the length of the inserted fragment of another program in order to conveniently consider the location of the electronic gluing.

The next moment, corresponding to the second tape, the rewind mode is activated. Then the Play mode is turned on, and at the moment corresponding to the fourth tape, the VCR stops the tape. If necessary, the operator using the device of the correction unit 4 can change the place of the electronic gluing, shift it along the tape forward or backward.

Then the operator from the remote control 3 gives the command Preinstallation. The VCR 1 goes into Play mode and at the same time timer 11 is turned on. Connected in a certain way are timer 11, two RS flip-flops 16 and 18, element OR 12, divider 13 into two, element 14, binary decimal counter 15 and delay line 17 determine the difference between the moments of the shape

neither the switch command of the video monitor in the first logic element 5 and the command generated in timer 11. This implemented Q P 5

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is in divider 13 by two. This time difference element And is converted into the number of frames, and after counter 15 in binary-decimal code enters correction block 4, which through element 5 corrects the state of the reversible counter 10. Correction block 4 also receives information from the RS-trigger output 16 on the priority of the arrival of pulses from logic element 5 or from timer 11. To reset, the first input of RS-flip-flop 18 receives a signal from the control panel 3, and the second input is delayed by a delay line 17 from the output of timer 11.

Next, the tape is unwound and stopped so that the next time the command time of the first logic element 5, indicating the place of electronic gluing, and the time of the command generated by the timer, differ only by the amount of delay in the second logic element 6, which is constant .

The first logic element is disconnected from further control of the VCR 1. VCR 1 is ready for installation. Similarly, the operator marks the VCR 2.

Then both VCRs are switched to edit mode.

Turns on the first (master) VCR in Playback mode. At the same time, this command from the console 3 of the VCR 1 goes through the console 3 of the VCR 2 to the control unit 8 and the second (slave) VCR 2 also goes into the Play mode. Simultaneously with the transition of the video recorders to the Playback mode, timer 11 starts.

After a certain (strictly constant) time expires, timer 11 issues a command to switch to the second logic element 6. Element 6 forms a command to switch the video monitor at the time of electronic splicing. In addition, element 6 generates a command to enable the Record mode and sends it to block 8.

The VCR 1 (master) goes into the Record mode, and the information from the slave VCR 2 is copied to the master.

The installation control device allows the use of video phonograms to be used as the master and slave by any of the VCRs 1 and 2.

Claims (1)

Invention Formula An installation control unit for video phonograms containing two video recorders, each of which contains a serially connected control panel, a correction unit, a first logic element, a second logic element and a control unit, as well as a control unit, the inputs of which are connected to the second outputs of the control panel, first and second logic elements, the tape counter, the output connected to the second input of the first logic element, the third input and output of which are connected to a reversible counter, and four the third input is to the third output of the control panel, the fourth output of which is connected to the second input of the second logic element, while the first input and the fifth output of the control panel of the first video recorder are connected respectively to the fifth output and the first input of the control panel of the second video recorder, characterized in that , in order to improve the accuracy of the installation, a sequentially connected timer, an OR element, a divider into two, an AND element and a binary-decimal counter, as well as the first RS trigger, the first th input connected to the output timer, connected in series delay line and vto5 swarm RS-trigger, the output coupled to the second inputs of the divider by two and the binary coded decimal counter whose output is connected to the first input of the correction unit, the second input Q connected to the output of the first RS-flip-flop, while the output of the tape counter is connected to the second input of the element And, the sixth output of the control panel is connected to the second inputs of the timer 5 and the second RS-flip-flop, the timer output is connected to the third input of the second logic element, the second inputs of the OR element and the first RS-flip-flop are connected to the fourth output of the first logic element.