JPH07134886A - Apparatus for editing tape - Google Patents

Abstract

PURPOSE:To prevent contents of a copy tape from being different even after the tape is edited a plurality of number of times by sending the tape at a reproducing side to a predetermined reference position and using a value of a counter at this position of the tape as a reference. CONSTITUTION:In accordance with an instruction by an operator through an operation key 12, a microcomputer (MCU) 11 outputs an instruction signal to a VTR 5 at a reproducing side via a control part 8 for the reproducing VTR to wind back a tape. Accordingly, the reproducing VTR 5 is stopped at the position BOT (a) of a leading end of the tape. When the reproducing VTR 5 is stopped at the BOT (a), the CPU 11 inputs and stores a value of a tape counter at the position in a memory 9 which stores edition points. At the same time, the CPU 11 calculates a difference of a counter value at a cut position IN (b) and true counter value at the BOT (a), which is used as a correcting value T. The correcting value T is stored in the memory 9. The CPU 11 adds the correcting value T afterwards while referring to the BOT (a) as a reference at all times to detect edition points (b), (c), (d), (e).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape editing device using a tape counter.

[0002]

2. Description of the Related Art Generally, tape editing in a VTR (magnetic tape reader) is performed by an operator while observing an image or sound obtained by playing back a video tape mounted on a source VTR. This is done by inputting the counter value to the tape editing device. By repeating this operation, the cut IN point and the cut OUT point for copying the designated portion on the tape to another tape are sequentially input to the tape editing apparatus.

[0003]

However, in the above-described conventional example, when copying of the tape portion designated by the tape counter value is repeated a plurality of times, the tape counter value does not indicate the absolute position of the tape. Since the player determines the tape counter value based on the number of revolutions of the capstan or the like, the video and audio recorded on the tape and the tape counter value deviate from each other. Since such a shift occurs, there is a drawback that the contents of the copy tape recorded the first time and the contents of the copy tape recorded a few times are different.

Therefore, in view of the above points, an object of the present invention is to prevent the video and audio recorded on the tape from deviating from the tape counter value, and to prevent duplication of the tape recorded on the first copy and a plurality of copy tapes. It is an object of the present invention to provide a tape editing apparatus that prevents the contents of a copy tape edited and recorded the next time from being different.

[0005]

In order to achieve the above object, the present invention provides a tape feeding means for feeding a tape to be edited to a predetermined position, and a tape at the predetermined position fed by the tape feeding means. Inputting the position as a reference position for editing, calculating means for calculating the difference between the edit point designated by the operator and the reference position for editing as a correction value, and tape copying using the reference position for editing and the correction value And a control means for executing.

As a form thereof, the present invention can be characterized in that the predetermined position is EOT or BOT.

[0007]

According to the present invention, the phase of the tape and the tape counter value is automatically adjusted every time before the copying of the edit is started, the tape on the reproducing side is sent to the EOT (tape end) or the BOT (tape start), and the tape counter there. The value is automatically input to the counter, and the tape counter value is used as the tape reference when editing. This allows the same copy tape to be made in the present invention.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows tape counter points (editing points) on a magnetic recording tape in tape editing according to an embodiment of the present invention. In FIG. 1, reference numeral 1 represents the entire magnetic recording tape. Reference numeral 2 is a leader tape of the magnetic recording tape 1, 3 is a cut of a scene to be copied to another tape, and 4 is a cut of a scene to be copied to another tape. a is a leader tape 2 detected by the VTR on the reproducing side and stopped B
OT (tape start end) is a tape counter point, b is a cut IN point of a cut, and c is a cut OUT point of a cut. d is the cut IN point of the cut, and e is the cut OUT point of the cut. Further, T represents a correction value for detecting the cut 3 and the cut 4 with reference to the BOT tape counter point a.

FIG. 2 shows the configuration of a tape editing apparatus according to an embodiment of the present invention. In FIG. 2, 5 is a reproducing VTR, 6 is a recording VTR, and 7 is an editing controller. The edit controller 7 is an edit point memory 9 for storing the above-mentioned edit point and BOT point counter values, a reproduction-side VTR control section 8, a recording-side VTR control section 10, and a microcomputer for controlling the entire edit controller. 11 and an operation key 12 of the editing controller.

The editing controller 7 configured as described above
1, while the operator inputs the tape counter value of the edit points b, c, d, and e of FIG. 1 by using the operation keys 12 while watching the image on the reproduction side VTR 5, the copy / execute operation key 1 is used.
Instruct with 2. In response to this instruction, the microcomputer 11 causes the reproduction-side VTR controller 8 to execute the reproduction-side VTR.
5, the tape rewinding instruction signal is output to VTR5 on the reproduction side.
Will be a BOT stop. When the reproducing VTR 5 is stopped at BOT, the microcomputer 11
The tape counter value at the BOT point in FIG. 1A is input, the counter value is stored in the edit point memory 9, and the microcomputer 11 causes the tape counter value at the cut IN point in b and the BOT point tape counter in a. The difference from the value is calculated to obtain the correction value T, and this T is stored in the memory 9.

After that, when the microcomputer 11 detects the edit points b, c, d, and e, for example, to detect the cut IN point b, the BOT point of a is used as a reference, so that the cut of b is cut. The tape counter value obtained by adding the IN point tape counter value and the correction value of T becomes the cut IN point of b viewed from the BOT point of a.

In the second and subsequent edits, the microcomputer 11 detects the tape counter value a at the BOT point, but the correction value T is not calculated, and the correction value T calculated in the first time is used for b. , C, d, e edit points are detected.

[0014]

As described above, according to the present invention,
A predetermined reference position (EOT
Or BOT) and the counter value of the tape position is used as a reference, so that there is a remarkable effect that the tape having the same content can be created even if the editing is performed a plurality of times.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of editing points on a magnetic recording tape in tape editing according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a tape editing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 magnetic tape 2 leader tape 3 scene cut (cut 1 scene) 4 scene cut (cut 2 scene) 5 playback side VTR 6 recording side VTR 7 editing controller 8 playback side VTR control section 9 editing point memory 10 recording side VTR control Part 11 Microcomputer 12 Operation key a BOT tape position b Cut cut IN point c Cut cut OUT point d Cut cut IN point e Cut cut OUT point

Claims (2)

[Claims] 1. A tape feed means for feeding a tape to be edited to a predetermined position, and a tape position at the predetermined position sent by the tape feed means is inputted as a reference position for editing, and is instructed by an operator. And a control means for executing tape copying using the reference position for editing and the correction value, and a calculating means for obtaining a difference between the editing point and the reference position for editing as a correction value. Editing device. 2. The tape editing apparatus according to claim 1, wherein the predetermined position is EOT or BOT.