JPS6120718Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a production editing device suitable for use in editing video signals in, for example, a magnetic recording/playback device, and is particularly designed to allow fine adjustment of the editing start point. .

An embodiment of the automatic editing device of the present invention will now be described with reference to the accompanying drawings.

Although not shown in this example, the first and second
A magnetic recording and reproducing device is provided, and first and second monitors are provided for each magnetic recording and reproducing device, and a first magnetic tape loaded in the first magnetic recording and reproducing device is This is a case where a part of the recorded video signal is replaced with a part of the video signal recorded on a second magnetic tape loaded in a second magnetic recording/reproducing device.

In FIG. 1, numerals 1 and 2 indicate address signal input terminals provided on the first and second magnetic tapes, respectively, to which address signals are supplied. In this example, a control signal CTL provided corresponding to each recording track is used as the address signal in order to track the tracks recorded on the first and second magnetic tapes and the magnetic head. The first address signal supplied to this address signal input terminal 1 is supplied to one fixed contact S ₁ a of the switch S 1, and the signal obtained at the movable contact S _{1 b} of this switch S ₁ is added to the addition circuit. 3 to the input terminal of a shift register 4 constituting a reversible counter, and the output signal obtained at the output terminal of this shift register 4 is supplied to the input terminal of this shift register 4 via an adder circuit 3. in this case,
The adder circuit 3 and shift register 4 add 1 each time an address signal is supplied to the input terminal 1 when the magnetic tape is running in the forward direction, and add 1 to the input terminal 1 when the magnetic tape is running in the reverse direction. Each time an address signal is supplied, 1 is subtracted. In addition, the output terminal of this shift register 4 is connected to the input terminal of a shift register 5 constituting a storage device for storing address information at the time of editing start, and when the edit start time determination button 6 is pressed, this shift register 5 The gate on the input side is configured such that, for example, the address information of the contents of the shift register or reversible counter 4 is supplied to the shift register or storage device 5 during one word interval. The output signal obtained at the output terminal of this shift register 5 is supplied to the input terminal of this shift register 5. Further, the output signal of the reversible counter 4 is supplied to one input terminal of the comparator circuit 7, and the output signal of the edit start time storage device 5, that is, the edit start time address information signal is supplied to the other input terminal of the comparator circuit 7. do. This comparison circuit 7 is designed to output a match signal "1" when the address information signal of the reversible counter 4 and the address information signal at the start of editing of the storage device 5, which are supplied to one and the other input terminals, match. It is. The output terminal of this comparison circuit 7 is connected to one terminal of the AND circuit 8 and the AND circuit 19.
is connected to the first input terminal of the AND circuit 8.
When the first magnetic tape runs in reverse, a "1" signal is supplied from the terminal 8a to the other input terminal of the magnetic tape. The output signal of this AND circuit 8 is supplied to an auxiliary counter 9. This auxiliary counter 9 is designed to generate a control signal at the output terminal 10, for example, 5 seconds after the input signal is supplied.
In this example, the first magnetic recording/reproducing device is put into an editing standby state by the control signal obtained at the output terminal 10. In addition, the second address signal supplied to the address signal input terminal 2 is connected to one fixed contact of the switch _S2 .
S ₂ a and the signal obtained at the movable contact S ₂ b of this switch S ₂ is supplied to the input terminal of a shift register 12 constituting a reversible counter via an adding circuit 11.
The output signal obtained at the output terminal of this shift register 12 is sent to the shift register 1 via an adder circuit 11.
2 input terminal. In this case, adder circuit 1
1 and shift register 12 add "1" each time an address signal is supplied to input terminal 2 when the magnetic tape is running in the forward direction, and add "1" to input terminal 2 when the magnetic tape is running in the reverse direction. Each time an address signal is supplied, "1" is subtracted. In addition, the output terminal of this shift register 12 is connected to the input terminal of a shift register 13 that constitutes a storage device that stores address information at the time of editing start, and when the edit start point determination button 14 is pressed, this shift register 13 gates open, for example, for one word period, and the shift register or reversible counter 12
The address information of the contents is supplied to a shift register, that is, a storage device 13. The output signal obtained at the output terminal of this shift register 13 is supplied to the input terminal of this shift register 13.
Further, the output signal of the reversible counter 12 is supplied to one input terminal of the comparator circuit 15, and the output signal of the edit start time storage device 13, that is, the edit start time address information signal is supplied to the other input terminal of the comparator circuit 15. do. This comparison circuit 15 is designed to output a match signal "1" when the address information signal of the reversible counter 12 and the address information signal at the start of editing of the storage device 13, which are supplied to one and the other input terminals, match. It is. The output terminal of this comparator circuit 15 is connected to one terminal of an AND circuit 16 and the second terminal of an AND circuit 19, respectively, and the other input terminal of this AND circuit 16 is connected to the reverse terminal of the second magnetic tape from a terminal 16a. At times, a "1" signal is supplied.
The output signal of this AND circuit 16 is sent to an auxiliary counter 17.
supply to. The auxiliary counter 17 is designed to generate a control signal at the output terminal 18, for example, 5 seconds after the input signal is supplied.In this example, the control signal obtained at the output terminal 18 causes the second magnetic The recording/playback device is placed in an editing pause state. In addition, the terminal 19a from which a signal of "1" is obtained when the magnetic tape is running in the forward direction is connected to the third input terminal of the AND circuit 19, and the editing signal obtained at the output terminal 20 of the AND circuit 19 is connected to the terminal 19a. In response to the start signal, the video signal reproduced from the first magnetic tape by the first magnetic recording and reproducing device is supplied to the second magnetic recording and reproducing device, and the reproduced video signal is recorded on the second magnetic tape. Do as you please.

Further, the output signals of the reversible counters 4 and 12 are supplied to one and the other input terminals of the husband selection circuit 21, respectively. This selection circuit 21 is configured to selectively obtain an output signal from either the reversible counter 4 or 12 on its output side. This selection circuit 2
The output signal 1 is supplied to the input terminal of the shift register 22 which constitutes a storage device for storing the address information of the reversible counter 4 or 12 at the time of the end of editing, and when the button 23 for determining the end of editing is pressed. The gate of this shift register 22 is configured such that, for example, the address information signal of the contents of the shift register 4 or 12 is supplied to the shift register 22, that is, the storage device. The output signal obtained at the output terminal of this shift register 22 is supplied to the input terminal of this shift register 22. Further, a selection circuit 24 selects the output signals of the reversible counters 4 and 12.
are supplied to one and the other input terminals, respectively. This selection circuit 24 is constructed in the same manner as the selection circuit 21, and is configured to select such that the same signal as that obtained at the output side of the selection circuit 21 is obtained on its output side. The signal obtained at the output side of this selection circuit 24 is supplied to one input terminal of a comparison circuit 25, and the output signal of the storage device 22 is supplied to this comparison circuit 25.
5 to the other input terminal. This comparison circuit 2
5 outputs a match signal "1" when the address information signal on the output side of the reversible counter 4 or 12 supplied to one and the other input terminal and the address signal at the end of editing of the storage device 22 match. It is something.
The output signal of this comparison circuit 25 is supplied to one input terminal of an AND circuit 26, and the terminal 27 from which a "1" signal is obtained when the magnetic tape is running in the forward direction is connected to the other input terminal of this AND circuit 26. The editing is completed depending on the signal obtained at the output terminal 28 of the AND circuit 26.

Further, in this example, the correction pulse generating means 31
and 32 are provided. This correction pulse generating means 3
1 and 32 have subtractive pulse and addition pulse switching means, so that subtraction pulses or addition pulses can be obtained as necessary, and each time a button provided on the correction pulse generating means 31 and 32 is pressed, It is designed so that one subtraction pulse or one addition pulse is generated. This correction pulse generating means 31
and 32 are respectively connected to the other fixed connections S ₁ c and S ₂ c of the switches S ₁ and S ₂ respectively. Further, the output signals of the storage devices 5 and 13 are supplied to the input terminals of the reversible counters 4 and 12, respectively, via connection switches 33 and 34, respectively. In this case, the connection switches 33 and 34 are closed for one word period when they are operated.

The operation of the automatic editing apparatus according to this example will be explained using the relationship between the magnetic tape time and the current time shown in FIG. In FIG. 2, line 29 indicates the state of the first magnetic recording and reproducing device, and line 30 indicates the state of the second magnetic recording and reproducing device. The first point of the video signal to be extracted while observing the video signal recorded on the first magnetic tape with the first magnetic recording/playback device in the playback state on a monitor, that is, the editing start point 29a
Then, the end point, that is, the editing end point 29b is determined. In this case, each movable contact of the switching devices S ₁ and S ₂
S ₁ b and S ₂ b are connected to one of the fixed contacts S ₁ a and S ₂ a, respectively, and the control signal CTL recorded on this first magnetic tape is supplied to the address signal input terminal 1, and this is reversibly transmitted. The information is supplied to a counter 4, and the reversible counter 4 obtains the address information of the first magnetic tape. When this editing start point 29a is observed, the editing start point determination button 6 is pressed, this address information signal is supplied to the storage device 5, and this is stored, and then when this editing end point 29b is observed, the editing end point is determined. By pressing the button 23, the address information of the first magnetic tape of the reversible counter 4 at this time is stored in the storage device 22.
In this case, the selection circuits 21 and 24 each receive the output signal of the reversible counter 4 on its output side. Thereafter, after running the first magnetic tape for a predetermined period of time, the first magnetic recording/reproducing device is brought to a halt state at time 29c, and then the first magnetic recording/reproducing device is brought to a reverse state. In this case, since a "1" signal is supplied to the terminal 8a, when the address information signal at the time of editing start stored in the storage device 5 and the address information signal of the reversible counter 4 match, the matching signal is used as an auxiliary signal. The control signal is supplied to the counter 9, and after, for example, 5 seconds, a control signal is obtained at the output terminal 10, and at this time point 29b, the first magnetic recording/reproducing device is placed in an editing pause state. Also, in the second magnetic recording and reproducing device, the video signal recorded on the second magnetic tape is observed on the monitor to determine the insertion start point of the external video signal, that is, the editing interval start point 30a. In this case as well, the control signal CTL recorded on this second magnetic tape is supplied to the address signal input terminal 2, and this is supplied to the reversible counter 12,
This reversible counter 12 obtains the address information of the magnetic tape. When this edit start point 30a is observed, the edit start point determination button 14 is pressed to supply this address information signal to the storage device 13 and store this address information. Thereafter, after running the second magnetic tape for a predetermined period of time, the second magnetic recording/reproducing device is brought to a halt state at time 30c, and then this first magnetic recording/reproducing device is brought to a reverse state. In this case, since a "1" signal is supplied to the terminal 16a, when the address information signal at the time of editing start stored in the storage device 13 matches the address information signal of the reversible counter 12, the matching signal is used as the auxiliary counter. A control signal is obtained at the output terminal 18, for example, 5 seconds after the magnetic recording device 17 is supplied, and at this time point 30d, the second magnetic recording/reproducing device is placed in an editing pause state.

Next, at time points 29e and 30e, the first and second magnetic recording/reproducing devices are simultaneously started in the forward direction. In this case, “1” is applied to the terminal 19a.
For example, time 2 after 5 seconds because the signal is being supplied.
When matching signals are obtained in the comparison circuits 7 and 15 at 9a and 30a, respectively, the output terminal 2 of the AND circuit 19
An editing start signal is obtained at 0, and this editing start signal causes the video signal recorded on the first magnetic tape to be recorded on the second magnetic tape. Next, at a time point 29b when the address information signal at the end of editing stored in the storage device 22 and the address information signal of the reversible counter 4 match, a coincidence signal is obtained at the output side of the comparator circuit 25;
At this time, since a "1" signal is supplied to the terminal 27, an editing end signal is obtained at the output terminal 28, and depending on this editing end signal, the first and second
Cancels the editing status of the magnetic recording/playback device. Thereafter, at time points 29f and 30f, the first and second magnetic recording and reproducing devices are stopped and the editing is completed.

In such an automatic editing device, audio splicing, etc.
If you want to move the seam of the video signal a little, use the first
and time point 2 when the second magnetic recording/playback device is in a stopped state.
If you want to fine-tune the extraction position of the video signal recorded on the first magnetic tape in steps 9c and 30c, close the connection switch 33, press the editing start point determination button 6, and select the address information stored in the storage device 5. is supplied to the reversible counter 4, and at this time, the address information of the reversible counter 4 is stored in the storage device 5. Then, connect the movable contact S ₁ b of the switch S ₁ to the other fixed contact.
S ₁ c, set the correction pulse generation means 31 to generate subtraction pulses or addition pulses as necessary, press the button the necessary number of times to supply the necessary number of correction pulses to the reversible counter 4, This reversible counter 4
Correct the contents of. Thereafter, the connection switch 33 is closed, and the edit start point determination button 6 is pressed, and the corrected address information of the reversible counter 4 is supplied to and stored in the storage device 5, and the original reversible count stored in the storage device 5 is The contents of the counter 4 are supplied to this reversible counter 4, and the movable contact S ₁ b of the switch S ₁ is connected to one fixed contact S ₁ a.
Connect to. In this way, the contents of the storage device 5, ie, the editing start point, can be corrected. Storage device 13
The contents of can also be corrected in the same way.

As described above, according to the present invention, there is an advantage that the automatic editing apparatus can finely adjust the editing start point as necessary.

In addition, in the above embodiment, the control signal
Since CTL is used as the magnetic tape address signal, there is no need to provide a special address signal.

In the above embodiment, the editing end signal is obtained based on the address information of the first magnetic tape, but it is also possible to obtain the editing end signal depending on the address information of the second magnetic tape, if necessary. It's easy to understand.

Further, the present invention is not limited to the above-mentioned embodiments, but for example, in the first and second magnetic recording and reproducing devices, the reverse is performed by a predetermined counter scale from the editing start point, and then the first and second magnetic recording and reproducing devices are reversed. Run the device in the forward direction until the counter scale is, for example, "00.0"
In the case where editing is started when It is easy to understand that the effects of the above embodiment can be achieved by correcting the contents of the counter as necessary. or,
It goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations may be adopted without departing from the gist of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the automatic editing apparatus of the present invention, and FIG. 2 is a diagram for explaining the present invention. 1 and 2 are address signal input terminals, 4 and 12 respectively.
are reversible counters, 5, 13, and 22 are storage devices, 7, 15, and 25 are comparison circuits, 20 is an editing start signal output terminal, 28 is an editing end signal output terminal, and 31 and 32 are correction pulses, respectively. The generating means, S ₁ and S ₂ are switches.

Claims (1)

[Scope of utility model registration request] means for obtaining an address signal in relation to the running of a recording medium; a correction pulse generating means; a counter for counting the address signal or the correction pulse; and selecting the address signal or the correction pulse for the counter. a memory connected to the counter; and a second switch that sets the memory to a storage state and stores a specific address signal of the counter as an editing start point. The automatic editing device is characterized in that the editing start point can be corrected when the correction pulse is applied to the counter by the switch and the memory is put into a storage state by the second switch. .