JPH02285883A - Editing system - Google Patents

Abstract

PURPOSE:To automatically record a video edited with a satisfactory timing even without considering processing time by an operator who performs an editing work by shifting the timing at the reproduction side and the recording side of the video by a period required for the conversion processing of an image. CONSTITUTION:Time information required for an image conversion processing at an image conversion processor 2 performed based on control by an image conversion control circuit 13 is supplied to a delay quantity detection circuit 16 in an edit controller 10, and the delay quantity of an output video signal for an input video signal to the image conversion processor 2 generated by the image conversion processing is defected, and it is supplied to a delay quantity designation circuit 17. A memory 15 for time table storage supplies reference time information, time code information, and control information in corresponding time tables to a reproduction control circuit 12 and a recording control circuit 14 first at the time of starting editing, and also, supplies prescribed control information to the image conversion control circuit 13. Then, a various kinds of control can be performed by supplying the information from the memory 15 for time table storage to each of control circuits 12, 13, and 14.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an editing system that performs predetermined processing on a video signal reproduced from, for example, one VTR and records it on the other VTR.

[Summary of the invention]

The present invention provides an editing system in which a video signal played back from a playback device is recorded by a recorder via an image processing means, in which the playback device and the recorder are controlled by providing a time difference according to the processing time of the image processing means. In this way, video signals that have been subjected to predetermined processing can be recorded satisfactorily.

[Conventional technology]

Conventionally, a video signal reproduced from one VTR is supplied to an image conversion processing device, this processing device performs predetermined signal processing (for example, mosaic processing, image transformation, etc.), and the processed video signal is transmitted to the other VTR. Recording is being done. When performing such editing, a frame memory for recording the video signal for at least one frame is provided in the image conversion processing device, and after the video signal is stored in this frame memory, various signal processing is performed. Ta.

[Problem to be solved by the invention]

By the way, the image conversion processing device using such a frame memory has the disadvantage that the processed output video signal is delayed by at least one frame with respect to the input video signal, and it is difficult to simultaneously connect the playback side VTR and the recording side VTR to the tape. When the tape is run, it is recorded on the tape of the recording side VTR with a delay of at least one frame, and one to several frames of unrecorded portions occur at the joints between each scene.

In view of this, an object of the present invention is to provide an editing system in which the timings of the reproducing device and the recording device coincide when performing the above-mentioned editing work.

[Means to solve the problem]

The editing system of the present invention, as shown in FIG.
In an editing system in which recording is performed by a recording device (3) via a reference time generating means (11) and an image processing means (2).
delay amount specifying means (17), (18) for specifying a delay amount according to the processing time in
) and delay amount specifying means (17), (18), control means (12), (14), (15) for controlling the playback device (1) and the recording device (3) based on the outputs of the delay amount specifying means (17), (18). It is something that

[Effect]

According to such a configuration, the control means (12), (14),
(15) can detect the processing time in the image processing means (2), and depending on this processing time, the player (1) or the recorder (3)
By shifting the control timing, it is possible to perform good editing in which the playback timing and recording timing are synchronized.

〔Example〕

Hereinafter, one embodiment of the editing system of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, (1) indicates a reproduction side VTR, and a videotape on which an unedited video signal is recorded is attached to this reproduction side VTR (1). in this case,
A time code is recorded on this videotape when the video signal is recorded. And this playback side VTR (1)
The video signal sent from the image conversion processing device (2) is supplied to the image conversion processing device (2). This image conversion processing device (2) is equipped with a frame memory, and various image conversions using this frame memory are controlled by an editing control device (10), which will be described later. The video signal output from this image conversion processing device (2) is supplied to a recording side VTR (3) and recorded on a videotape mounted on this recording side VTR (3). This recording side VTR (3) also records a time code when recording a video signal. In addition, an image conversion processing device (
The video signal outputted by 2) is also supplied to a monitor receiver (4) so that it can be monitored by this monitor receiver (4). Further, the video signal reproduced from the video tape loaded on the recording side VTR (3) can be supplied to the image conversion processing device (2).

In addition, in FIG. 1, (10) indicates an editing control device,
This editing control device (10) has a reproduction side VTR (1),
It controls the image conversion processing device (2) and the recording side VTR (3). That is, this editing control device (10) includes a reference time generator (11), and this reference time generator (11)
The current time information outputted by the reproduction control circuit (12),
Image conversion control circuit (13), recording control circuit (14) and timetable memo! I (15).

In this case, the current time information output by the reference time generator (11) is a signal in units of one frame (1/30 second).

In the timetable memory memo 'J (15), by operating a predetermined key (not shown) in advance, a video attached to the VTR (1) on the playback side of the video to be edited by performing image conversion etc. Time code information necessary for editing work, such as a time code that indicates the recorded location on the tape and a time code that indicates the recorded location on the video tape attached to the recording side VTR (3) of this playback video. However, it is stored as a time table together with reference time information and control information such as tape running. And this timetable memo! The time code information and control information output by J (15) are supplied to a reproduction control circuit (12), an image conversion control circuit (13), and a recording control circuit (14). And the playback control circuit (12) is a memo for time table storage! Information from I (15) and reference time generator (11)
Based on the time information, the playback side VTR (1)
control. In this case, the time code of the video signal being sent from the playback VTR (1) is transferred to the playback control circuit (12).
). The image conversion control circuit (13) also controls the image conversion processing device (2) based on information from the time table storage memo U (15) and time information from the reference time generator (11). .

Furthermore, the recording control circuit (14) is a memo for time table storage! j (15) and the reference time generator (11
), the recording side VTR (3
). In this case, the time code obtained by running the tape on the recording side VTR (3) is supplied to the recording M control circuit (14).

Further, in this example, time information required for image conversion processing in the image conversion processing device (2), which is performed based on control by the image conversion control circuit (13), is transmitted to the delay amount detection circuit (16) of the editing control device (10). ) and this delay amount detection circuit (
In step 16), the amount of delay of the output video signal relative to the input video signal to the image conversion processing device (2) caused by the image conversion process is detected. Then, the detected delay amount information is supplied to the delay amount designation circuit (17). This delay amount specification circuit (17)
is a circuit that instructs the subtraction value setting circuit (18) to set a subtraction value of the time code, and causes the subtraction value to be set based on the supplied delay amount information. In this case, use the mode switch (19
) is supplied to the subtraction value setting circuit (18), and the subtraction value set based on this editing mode information is corrected. For example, the mode switch (19)
Accordingly, when a monitor mode is set in which the editing state is monitored on the monitor receiver (4) instead of recording on the recording side VTR (3), the subtraction value is corrected to O (no subtraction).

Then, the subtraction value information set by the subtraction value setting circuit (IB) is supplied to the timetable storage memory (15). When the subtraction value information is supplied to this timetable storage memory (15), each reference time information of the control timetable of the playback side VTR (1) stored in the timetable storage memo 'J (15) is , rewrites the time information with time information subtracted by the value indicated by the subtraction value information, and supplies the rewritten reference time information to the reproduction control circuit (12) together with the time code information and control information.

Next, to explain the operation when editing using the editing system of this example, for example, a memo for storing a timetable! J (
15), the time table for controlling the reproduction side VTR (1) is stored in the state shown in FIG.
It is assumed that the control time table for R(3) is stored in a state as shown in FIG. In other words, the playback control timetable includes a time code that starts or ends playback of the videotape loaded in the playback side VTR (1) when a predetermined reference time indicated by the reference time information is reached. This is indicated by code information, and the playback speed of the videotape at this time is indicated by control information. In addition, as a recording control timetable, when a predetermined reference time indicated by the reference time information is reached, the recording side V
The time code information indicates the time code for starting or ending the running of the video tape loaded in the TR (3), and the control information indicates the recording start point and recording end point. Although not shown, control information indicating the conversion processing performed by the image conversion processing device (2) is also stored in the same manner.

The editing control device (10) controls each VTR (1), (3) and the image conversion processing device (2) according to the timetable set in this way. In other words, a memo for remembering the timetable! I (15) first supplies the playback control circuit (12) and the recording control circuit (14) with reference time information, time code information, and control information in the corresponding timetable, and also performs image conversion. Control circuit (
13) supplies predetermined control information.

In this case, each piece of information in the timetable described above is supplied to the image conversion control circuit (13) as is, but the reference time information in the timetable supplied to the reproduction control circuit (12) is supplied to the subtraction value setting circuit ( 18) is supplied as information on a value subtracted by the value indicated by the subtraction value information supplied from 18). For example, depending on the subtraction value information, one frame (one frame) (
When a subtraction of 1/30 seconds) is indicated, the reference time information of the reproduction control time table as shown in FIG. 2 is rewritten to the time information of one frame before and then supplied to the reproduction control circuit (12). Then, the time code information and control information are supplied to the reproduction control circuit (12) as they are without being rewritten.

In this way, each control circuit (12>, (13), (
Various controls are performed by supplying information from the time table storage memo 'J (15) to 14). That is, in the reproduction control circuit (12), when the current time counted by the reference time generator (11) matches the time in any of the reference time information in the crudely rewritten timetable mentioned above, this From the position indicated by the time code information attached to the matched reference time information, the playback side VTR
(1) The video tape loaded in the video tape is run at the tape speed indicated by the control information to start playback. Alternatively, when an instruction to stop the reproduction is given after the reproduction has started, the reproduction is ended.

Further, the image conversion control circuit (13) controls the image conversion processing device (2) to perform image processing indicated by the control information.

Further, in the recording control circuit (14), a reference time generator (1
When the current time counted by 1) matches the time in any of the reference time information in the timetable, the recording side VTR (3) is moved from the position indicated by the time code information accompanying the matched reference time information. The videotape attached to the machine starts running.

At this time, when the control information instructs to start recording, the video signal output by the image conversion processing device (2) is recorded.

After starting this recording, when an instruction to stop recording is given, the recording is ended.

The video signal thus subjected to predetermined image processing by the image conversion processing device (2) is recorded by the recording side VTR (3), and is recorded as a memo for time table storage! The editing work set in J (15) is automatically performed. In this case, in this example, the delay amount of the video signal caused by image processing in the image conversion processing device (2) is detected by the delay amount detection circuit (16), and the subtraction value setting circuit ( 18
), the reference time information in the playback control timetable stored in the timetable storage memory (15) is rewritten, so even if it takes time for image processing in the image conversion processing device (2), the playback side The reproduction timing of the VTR (1) and the recording timing of the recording side VTR (3) match and are synchronized. For example, the image conversion processing device (2) processes the image for one frame period (1/30
When the delay amount detection circuit (16) detects that the delay amount detection circuit (16) requires 1 frame, each reference time information in the playback control timetable as shown in FIG. ) Playback control is performed from the time when the current time reaches one frame period earlier than the time set in ).

Therefore, through the image conversion processing device (2), the recording side VTR
The timing at which the video signal is supplied to (3) coincides with the timing instructed by the recording control timetable, so that editing can be performed satisfactorily on the recording side VTR (3). In this case, in this example, the time required for image processing in the image conversion processing device (2) is detected by the delay amount detection circuit (16), so when performing another signal processing with a different processing time. can also be dealt with quickly.

On the right, when you monitor the edited video on the monitor receiver (4) instead of recording it on the recording side VTR (3),
Since the subtraction value is corrected to 0 by the mode switch (19), the reference time information is not rewritten.

In the above embodiment, a VTR is used on both the reproduction side and the recording side, but it goes without saying that various other devices such as a video disk device can also be used as the video signal reproduction device and recording device. Further, in the above-described embodiments, the timing on the reproduction side was adjusted to be faster, but the same control can be achieved even if the timing on the recording side is delayed. Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and can take various other configurations without departing from the gist of the present invention.

〔Effect of the invention〕

According to the present invention, the timing between the video playback side and the recording side is shifted by the time required for image conversion processing, so that the recording position is in the set state, and the operator performing editing work can save processing time. There is an advantage in that the edited video is automatically recorded at a good timing without having to take into account.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the editing system of the present invention, and FIGS. 2 and 3 are diagrams showing timetables used in the example shown in FIG. [1] The playback side VTR 5 (2) is an image conversion processing device, (
3] is a recording side VTR, (15) is a time table memory memo+J, (16) is a delay amount detection circuit, (17) is a delay amount designation circuit, and (18) is a subtraction value setting circuit. - Diagram of the structure of 9 variations Figure 1 Timetable of reproduction law Figure 2 Daimler file of the blind self-exclusion gate Figure 3

Claims (1)

[Claims] In an editing system in which a video signal reproduced from a playback device is recorded by a recording device via an image processing device, the system includes a reference time generation device and a delay amount designation device for specifying a delay amount according to a processing time in the image processing device. and a control means for controlling the playback device and the recorder based on the outputs of the reference time generation means and the delay amount designation means.