JP2687372B2 - Editing controller - Google Patents

Description

The present invention relates to an editing controller for a VTR. [Summary of the Invention] The present invention has means for measuring the time lag from the time when the recording pause is canceled to the actual recording in the recording side VTR when editing the image information recorded in the VTR,
The recording pause is released earlier by the measured time lag so that the edit recording can be correctly performed from a predetermined cut-in time. [Prior Art] Conventionally, in the case of an editing machine intended for a consumer VTR, so-called dubbing editing is performed in which another tape is newly started from a recorded tape. This is to play a recorded tape on the VTR on the playback side, extract the necessary scenes from it, and record it on a new tape. That is, for example, as shown in the explanatory view of FIG.
The recorded tape MT is played back with, and from the playback signal, the beginning of the required scene A, B, ... and the end of the scene, that is, the cut-in point and the cut-out point are played back with an editor, for example. Determined based on the playback control signal from the side VTR. On the other hand, the recording VTR is set to the recording pause state (temporarily stopped), the playback VTR is rewound to the point before the cut-in point, and when the playback VTR is started from that point, the playback VTR is played back according to the control signal from the editing controller. The cut-in point is detected based on the control signal of the playback signal from the VTR, and at that cut-in point, the recording VTR is changed from the recording pause state to the pause release state to the recording state, and when it becomes the cutout point, it is recorded. Each scene is recorded and edited on the raw tape ST in the paused state or the stopped state. Then, this operation is performed one after another, and editing can be performed with the required scenes A, B, ... There is also an automatic editing device in which the VTR on the reproducing side is reproduced from the head of the tape, and so-called continuous recording is sequentially performed on the VTR on the recording side based on predetermined cut-in and cut-out points. In this continuous recording mode, as shown in FIG. 7, when a pause command signal is given to the recording side VTR from the editing controller, the recording side VTR rewinds for a predetermined time from the time when the pause command signal is given. Then, the actual pose state is established at the rewound position. Then, at the point before the cut-in point of the scene before the rewound time, the pause is released, but the VTR on the recording side is in the playback state for the rewound time, and the servo When the rising edge is performed and the time elapses, that is, the cutout point of the previous scene is reached, the actual recording is started and the recording of the next scene is started. [Problems to be Solved by the Invention] Conventionally, in the editing controller for dubbing editing as described above, the timing of releasing the pause of the recording-side VTR is
Edit points set based on the playback signal from the playback VTR,
That is, since it is determined by the point of cut-in and cut-out, the beginning of the scene to be recorded is deleted or the end is erased due to the time lag to the actual recording operation on the recording side VTR and the above-described continuous recording operation. There is an inconvenience that it will be done. That is, as shown in FIG.
Even if R is unpaused, this VTR generally has a time lag from the pause cancellation to the actual recording state due to the rising of the servo, etc. As shown in LK, the first image of the scene you want to record will be missing. Also, in the case of a continuous recording operation, the recording paused state was set at the cutout point, and in that state, what was correctly recorded up to the cutout point was advanced by the amount that was unpaused next and rewound. After that, when the actual recording operation starts before the rewound portion when the actual recording state is reached, the last portion of the previously recorded scene, that is, before the cutout in FIG. There is a drawback that the part DB indicated by diagonal lines is erased by overwriting by the head part of the next scene. An object of the present invention is to prevent the head portion of the scene from being chipped due to the time lag from the above-mentioned pause release state to the actual recording start point. [Means for Solving Problems] The editing controller according to the present invention includes a reproducing-side VTR and a recording-side VTR.
Edited by interposing between the TR and the recording side VTR of the recording side VTR based on the position information of the cut-in and cut-out predetermined based on the playback video signal from the playback side VTR for editing. In the editing controller to be performed, time information generating means for generating time information on the recording side VTR, and time information generating means for generating time information recorded on the recording side VTR from a reproduction signal, , Having a time lag measuring means for directly measuring a time lag from the recording pause release point of the recording side VTR to the actual start of recording based on the reproduced time information, and at the time of editing, is measured by the time lag measuring means. The pause release signal which is earlier by the time lag is generated and is supplied to the recording side VTR. [Operation] Pause is released earlier than the cut-in point by the amount of time lag, and the scene to be recorded is dubbed without missing the beginning. [Embodiment] FIG. 1 is a block diagram of an example of a dubbing editing system using an editing controller according to the present invention. That is, (1) is the playback VTR, (2) is the recording VTR, (10)
Is a controller for editing. Editing controller (1
0) is supplied with a reproduction video signal and a reproduction audio signal from the reproduction side VTR (1) and a reproduction control signal. Further, the recording side VTR (2) is supplied with the reproduced video signal and the reproduced audio signal from the reproducing side VTR (1) through the editing controller (10) to perform dubbing editing as described later. Incidentally, the control signal of the VTR (2) on the recording side is formed by a signal synchronized with the vertical synchronizing signal of the reproduced video signal, just as in the conventional case. For the editing controller (10), cut in,
The cut-in / out key (11) and the editing key (12) for determining the cut-out point are connected. Next, the operation of dubbing editing by the editing controller (10) will be described with reference to the flowchart of FIG. The editing controller (10) has a switch circuit (101), and this switch circuit (101) is switched to a state opposite to the state shown in the figure at the beginning of dubbing editing. Then, the time lag from the release of the recording pause to the actual recording state in the recording side VTR (2) and the time of the portion which disappears in the continuous recording operation are first measured. That is, when the key for measuring the time lag is pressed with the editing key (12), the editing control means (10
The switch (101) is switched to the terminal B side opposite to the state shown in the figure by the signal from 2). Then, the time information signal from the time information signal generating means (103) is started from 0 second 00 by the signal from the control means (102). At the same time, a control signal is given from the editing control means (102) to the recording side VTR mode control means (104),
The means (104) sends a signal to the recording-side VTR (2) to cancel the pause from the recording-paused state, and the recording-side VT
R (2) starts recording. The above corresponds to steps [201] to [203] of the flowchart of FIG. In this case, the timing is adjusted so that the recording pause release signal is given to the recording side VTR at the moment when the time information signal from the time information signal generating means (103) starts from 0.00. Therefore, if there is no time lag in the VTR (2) on the recording side, the time information is 0 seconds 00
Will be recorded on tape from. The time information can be recorded in the form of a video signal, for example, as shown in FIG. That is, this is recorded as a state of a binarized digital signal in which the white level is "1" and the black level is "0" with one horizontal period as one bit cycle. Of course, not such a digital signal, for example, a digital signal "1" is a signal of frequency f ₁ ,
“0” may be recorded as an FSK signal as a signal of frequency f ₂ . In any case, it is recorded in the state of the video signal. Of course, instead of the video signal, the digitized time information may be recorded instead of the audio signal. Thus, when the recording is started and the time information from the time information signal generating means (103) changes momentarily and the time lag is considered to be the maximum, for example, about 10 seconds, the time information signal generating means (103) A control signal is supplied from the edit control means (102) to
The time of the time information signal generating means (103) is set to the time considered to be the maximum value of the time of the part which disappears in the continuous recording.
Then, that time is thereafter sequentially passed in the reverse direction. That is, the clock counter is decremented. When the time of the time information signal generating means reaches 0 seconds 00, the editing side control means (102) causes the recording side VTR mode control means (10
A control signal is sent to 4), and the recording-side VTR (2) is put into a pause state by the control signal from the recording-side VTR mode control means (104). The above is the state from step [204] to step [209] in FIG. When the VTR (2) on the recording side is in the splice mode when it is placed in the pause state in step (209), the actual pause state is about ten or more tape control signals from the time when the pause signal is sent. When it is returned, it is in the actual suspended state. Then, after several seconds, the recording pause state is released again, and at this time, the time information signal generating means (103) does not output the time information. That is, no signal is recorded on the recording side VTR (2). When this no-signal recording section is performed for about 10 seconds, the recording side VTR (2) is stopped, and then the tape is returned to the recording start point. The above is the step [21] in the flowchart of FIG.
The state is from 0] to step [213]. A time chart for recording time information is shown in FIG. Next, the recording side VTR (2) is set to the reproducing state. Then, the recorded time information is used as a reproduction signal in the recording side VTR.
The data obtained from (2) is supplied to the time information decoder (105) of the editing controller (10), and the time information is decoded. The output of the time information decoder (105) is supplied to the recording rising time lag register (106) and the continuous erasing time register (107), respectively. Then, the recording start time lag register (106) latches the first time of the reproduction time information obtained from the time information decoder (105). On the other hand, the last erasure time register (107) latches the last time of the time information from the time information decoder (105). Then the VTR
In (2), the state is stopped, and after rewinding, the automatic edit flow chart is continued. The above corresponds to steps (214) to (218) in FIG. A time chart of reproduction of time information is shown in FIG. The leading time of the reproduction output of the time information fetched in the recording rise time lag register (106) is, as is clear from FIGS. 4 and 5, when the recording pause is released to the actual recording state. Since the time information is recorded for the first time, the time information is not recorded in the recording side VTR (2) at the time lag portion, and the start time of the reproduction signal is the time lag itself. Has become. On the other hand, the time information latched in the register (107) is
It is the last time of the reproduction time information. This represents the time of the portion which is erased by the non-signal recording when the recording is started next in the continuous recording as shown in FIG. That is, if it is not erased, the last time information should be 0.00. However, if it is erased, the time before 0.00 is displayed. It corresponds to the time information indicating exactly how many seconds have been erased since the end of recording. The time information taken in these registers (106) and (107) is used as cut-in / cut-out signal generating means (10
8) supplied to. This cut-in and cut-out signal generating means (108)
Is supplied to the edit control means (102) and serves as a reference for outputting the recording pause release and recording pause timing signals from the editing controller (10) in terms of cut-in and cut-out. When the time lag and the erasing time using the time information are measured in this way, the normal flow of automatic editing is started. That is, first, the reproduction side VTR (1) reproduces the cut-in and cut-out points of the scene to be extracted by operating the cut-in / out key (11) to register the cut-in / out signal generating means (108). Each point is stored in. This is done, for example, by playing the playback VTR (1) sequentially from the beginning, counting the playback control signal with a counter based on the beginning time point, and sequentially capturing the cut-in and cut-out points in the register. It can be carried out. In this way, when the cut-in and cut-out signal generating means (108) are set to the cut-in and cut-out points of the required scenes, the cut-in and cut-out signal generating means (108) uses the register (106). The time information is corrected so that the recording pause is released earlier than the cut-in time by the time lag time and the cut-out time is delayed by the erase time by the time information from the register (107). It When the above operation is completed, the playback VTR is rewound, and the playback state is resumed from the first position. Then, the reproduction control signal is counted from the beginning again, and when the time is earlier than the set cut-in time by the time lag, the control signal is given to the editing control means (102), and the recording side VTR (2) is switched to the mode. A recording pause release signal is given from the control means (104), and the recording side VTR (2) is brought into a recording state. Further, at a time point delayed by the erasing time from the cut-out point, a signal indicating the cut-out is given to the editing control means (102), and the recording-side VTR mode control means (104) gives the recording-side VTR (2). A pause signal is given to the VTR (2), and the VTR (2) enters the pause state. Thereafter, the above operation is repeated at each cut-in and cut-out point. When the time from the cutout to the cutin is long, that is, when the required scenes are long, the editing control means (102) controls the playback side VTR mode control means (109) in order to perform editing quickly. A control signal is given to the section so that the section is controlled to be fast forward. As described above, at the time of cut-in, the pause cancellation command signal is output earlier by the time lag of the rising edge of recording, so that the head portion of the scene is not chipped. Also, at the time of cutout, the signal is output with a delay by the time of the part that is erased by overwriting due to continuous recording, so the end part of the scene will be missing during continuous recording. Will disappear. In the above example, the editing controller (10)
Is provided with an edit control microcomputer and a control microcomputer, and the control microcomputer controls the time information signal generating means (103) and the time information decoder (105) to send time information to them or play time. By receiving the information, the above editing operation can be realized by exchanging data with the editing control microcomputer. In that case, the editing controller (1
Each block of 0) becomes a functional block. Further, FIG. 2 shows a flowchart of a program executed by the control microcomputer and the editing control microcomputer. The above is the case where the cut-in and cut-out points are determined based on the VTR playback control signal.
The present invention is applicable not only to such a VTR but also for editing an 8 mm VTR. In other words, the point is to control the pause release and pause timing. [Effect of the Invention] According to the present invention, time information is recorded in advance on the recording-side VTR, and by reproducing it, the time lag from the pause-released state at the recording start portion to the actual recording state is measured. It is possible to eliminate the loss of the scene at the recording start point by accelerating the recording pause cancellation accordingly. In addition, as in the example in the figure, by outputting a pause signal after the time of the cutout point by the time of the part that disappears due to the continuous recording, the deletion of the end part of the scene is avoided. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an example of a dubbing editing system using an editing controller according to the present invention, FIG. 2 is a flowchart for explaining its operation, and FIG. 3 is an example of time information. FIG. 4, FIG. 4 is a diagram showing a time chart for recording time information, FIG. 5 is a diagram showing a time chart for reproducing time information, FIG. 6 is a diagram showing an example of dubbing editing, and FIG. It is a figure for demonstrating joint recording. (1) is a reproducing VTR, (2) is a recording VTR, (10) is an editing controller, (103) is a time information signal generating means, and (1)
Reference numeral 05 is a time information decoder, (106) is a recording rising time lag register, (107) is a joint recording / erasing time register, and (108) is a cut-in / cut-out signal generating means.

Claims (1)

(57) [Claims] Interposed between the VTR on the playback side and the VTR on the recording side,
The recording side based on the cut-in and cut-out position information that is predetermined based on the playback video signal from the VTR.
In the editing controller that performs the recording pause and unpause of the VTR for editing, the time information generating means generated to record the time information in the recording side VTR and the time recorded in the recording side VTR. Time information generating means for generating information from a reproduction signal, and the recording side VTR based on the reproduced time information.
It has a time lag measuring means for directly measuring the time lag from the recording pause canceling point to the actual start of recording, and at the time of editing, forms a pause canceling signal that is earlier by the time lag measured by the time lag measuring means, and An editing controller adapted to be supplied to the recording side VTR.