JP2768699B2 - Video signal processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to editing for recording a video signal reproduced from a second recording medium on a first recording medium on which a video signal is recorded. The present invention relates to a video signal processing method used in the above.

[Prior art] Generally, as a procedure for connecting two VTRs and performing insert editing, an editing start point (hereinafter referred to as an IN point), an editing end point (hereinafter referred to as an OUT point) and a source (hereinafter referred to as an OUT point) on a master (recording) tape side. (Reproduction) After registering at least three time codes among the IN and OUT points on the tape side, before performing actual editing, confirmation is performed in a mode called preview, and the process proceeds to main editing.

In this preview mode operation, when the preview button is pressed, both VTRs send the tape to a point a certain time before the IN point (usually called the pre-roll point), and when both tapes have been sent to the pre-roll point, Both VTRs are in playback mode, and after a certain period of time from the OUT point, both VTRs
Put TR in PAUSE state.

During this time, the video signal output from the source VTR is a playback image with the source tape, and the video signal output from the master deck is the playback image on the master tape up to the IN point.
Between UT points, EE (playback image of source tape) and after OUT point, it switches to playback image of master tape, and you can check the editing status.

[Problems to be Solved by the Invention] However, in the above conventional example, although the image on the source side to be inserted during editing can be confirmed, the image on the master side to be inserted during editing, that is, the image to be erased cannot be confirmed. You can check while watching the timecode played on the master deck, but it is difficult to know the moment of switching, and it is difficult to check in detail. In addition, the confirmation work is twice as troublesome, and the efficiency of the editing work is prevented.

The present invention has been made in view of the above-described drawbacks, and has as its object to provide a method capable of confirming both images edited during preview.

[Means for Solving the Problems] The present invention relates to a method used for editing in which a video signal reproduced from a second recording medium is recorded on a first recording medium on which a video signal is recorded. Then, an editing start point on the first and second recording media is designated, and the first and second recording media are reproduced such that the editing start points on the first and second recording media are reproduced in synchronization with each other. In a mode in which a video signal is reproduced from a medium, a video signal reproduced from the first recording medium is output to a display device until the editing start point, and reproduced from the first recording medium after the editing start point. And synthesizing the reproduced video signal and the video signal reproduced from the second recording medium, and outputting the synthesized signal to the display device. The first against the medium 2. A method used for editing for recording a video signal reproduced from a second recording medium, wherein an editing end point in the first and second recording media is designated, and the first and second recording media are designated. In the mode in which video signals are respectively reproduced from the first and second recording media so that the editing end points of the video signals are reproduced in synchronization with each other, the video signal reproduced from the first recording medium until the editing end point is reached. And outputting the video signal reproduced from the first recording medium to the display device after the editing end point, combining the video signal reproduced from the second recording medium with the video signal reproduced from the second recording medium. It is characterized by.

[Operation] According to the present invention, in the mode of synchronously reproducing the first and second recording media, a video signal from the first recording medium is output until the editing start point, and the first and second recording media are output after the editing start point. The video signal from the recording medium and the video signal from the second recording medium are combined and output.

Further, according to the present invention, in a mode in which the first and second recording media are synchronously reproduced, a video signal from the first recording medium and a video signal from the second recording medium are transmitted until the editing end point. The video signal is synthesized and output, and after the editing end point, a video signal from the first recording medium is output.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an editing system as one embodiment of the present invention. 1 is a source side VTR (deck), 2 is a master side VTR (deck),
The video signal V and audio signal A output of TR1 are
The signal is input to TR2 and also to the source monitor 3. The signals V and A input to the master side deck 2 are subjected to recording processing in the video / audio processing unit 4 when the master side deck 2 is set to a recording mode, and recorded on a magnetic tape by the electromagnetic conversion system 18. Is done. On the other hand, as the signals V and A and the video and audio EE, the switching circuit 5
Is also entered. In the reproduction mode, reproduction signals (AOUT, VOUT) from the electromagnetic conversion system 18 are also input to the switching circuit 5 via the video / audio signal processing unit 4. Here, the video signal EE (V) as the EE and the video reproduction signal VOUT are each an A / D conversion circuit.
It is stored in the memories 8, 9 via 6, 7. The data stored in the memory 9 is thinned out by the sampling circuit 10 and the image synthesis circuit 11 and
The signal passes through the D / A conversion circuit 11 'and becomes an image signal in which the reproduced image 13 is inserted into a part of the EE image 12 as shown in FIG. The audio signal EE (A) as the EE is a reproduced audio signal from the source side deck 1 and is input to the switching circuit 5 together with the reproduced audio signal A OUT of the master side deck 2. The switching circuit 5 outputs the video and audio signals switched according to the mode, and inputs them to the master monitor 14. Reference numeral 15 denotes a CPU which controls the source VTR 1 and the master VTR 2 by key input from the operation unit 16.

Next, the operation in the preview mode will be described. FIG. 3 is a flowchart showing the operation of the CPU 15 in the preview mode in this embodiment, and FIG. 4 is a timing chart.

First, the edit points (IN point, OUT point) of both VTRs 1 and 2 are
After registering the time code of (point), the preview operation is started by pressing the preview button of the operation unit 16, the tape running system 17 of both VTRs is controlled, and the pre-roll point is set to a certain time before the IN point. And send the tape (S1). The one that arrives first waits in the PAUSE state at the pre-roll point (S2), and when both are aligned at the pre-roll point (S3), both VTRs are played back (S4), and the master VTR 2
Outputs a reproduced image signal (S5). Next, when the edit IN point is reached (S6), the switching circuit 5 operates according to a command from the CPU 15, and the output from the VTR 2 is switched to an image signal synthesized by the image synthesis circuit 11 (S7). At this time the voice
Switch to EE. When the edit OUT point is reached (S
8) In response to an instruction from the CPU 15, the output from the VTR 2 is switched to a reproduced image again (S9), and after a lapse of a predetermined time S from the edit OUT point (S10), the tape stops and enters the PAUSE state (S11).

As described above, during the preview operation, the OU starts from the edit IN point.
In the output image between point T, the master side V
By inserting the TR, it is possible to check the image to be erased at the same time as checking the editing status.

[Effects of the Invention] As described above, according to the present invention, an image recorded on a recording medium on the recording side, that is, an image to be deleted by editing, after the editing start point or until the editing end point. The image can be easily checked together with the image to be recorded, and therefore, the instant at which the image is switched at the editing start and end points can be accurately grasped, and the editing work can proceed efficiently. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an editing system as one embodiment of the present invention, FIG. 2 is a diagram showing a state of a composite image, and FIG. 3 is a CPU in a preview mode in the present invention.
FIG. 4 is a timing chart showing the operation in the preview mode in this embodiment. 1 Source VTR, 2 Master VTR, 4 Video / audio processing unit, 5 Switching circuit, 11 Synthetic circuit, 12 EE image, 13 Reproduction image of master VTR, 15 ……CPU.

Claims (2)

(57) [Claims] 1. A method used for editing for recording a video signal reproduced from a second recording medium on a first recording medium on which a video signal is recorded, wherein the first and second recording media are recorded. The video signal is reproduced from the first and second recording media such that an editing start point on the second recording medium is designated and the editing start points on the first and second recording media are reproduced in synchronization with each other. In the mode, the video signal reproduced from the first recording medium is output to a display device until the editing start point, and the video signal reproduced from the first recording medium and the second video signal are reproduced after the editing start point. A video signal processing method comprising: synthesizing a video signal reproduced from a recording medium according to claim 1; 2. A method used for editing for recording a video signal reproduced from a second recording medium on a first recording medium on which a video signal is recorded, wherein the first and the second recording media are recorded. The video signal is reproduced from the first and second recording media such that an editing end point on the second recording medium is designated and the editing end points on the first and second recording media are reproduced synchronously. In the mode, up to the editing end point, the video signal reproduced from the first recording medium and the video signal reproduced from the second recording medium are combined and output to a display device. Outputting a video signal reproduced from the first recording medium to the display device.