JPH07334971A - Image editing device - Google Patents

Abstract

PURPOSE:To rapidly and easily perform an editing process without using a large capacity disk device by performing the editing work on a random accessable disk device. CONSTITUTION:A control part 3 controls an original VTR 1 and the disk device 5, and a part to be edited of image information on an original tape loaded on the VTR 1 is transferred to the device 5 to be recorded. Meanwhile, a process part 6 rewinds a master tape loaded on a master VTR 2 for a prescribed time so as to be recorded from an insertion start point to be ready for the next editing. The start point and end point of insertion image information of the original side are decided on the device 5 related to the image information copied from the VTR 1 to be registered on an editing data recording part 4. And, the control part 3 executes the editing processing according to the registered editing processing data, and the image information in the device 5 is sent to the master VTR 2 through the processing part 6 to be recorded on the master tape. Hereafter, same operations are repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image editing apparatus used for creating television programs and news, creating video software, etc., and in particular, it enables highly efficient editing work by using a random access disk device. Image editing device.

[0002]

2. Description of the Related Art In recent years, there has been a remarkable increase in performance and miniaturization of professional video tape recorders (hereinafter abbreviated as VTRs), and they have come to be widely used in news gathering and broadcasting business. . Also, home VT
With the spread of R, demand for video software has grown remarkably. Under such circumstances, an image editing apparatus for more efficiently creating and editing programs and video software has become extremely important.

A conventional image editing apparatus will be described below with reference to the drawings. FIG. 5 is a block diagram showing an example of the most basic configuration of a conventional image editing apparatus.
Is an original VTR for playing an original tape containing an original image to be edited, 2 is an original VTR 1
A master VTR for recording and reproducing a master tape which is connected to and is being edited, 3 is an original VTR 1 and a master VTR
A control unit 4 for controlling 2 is an edit data recording unit, and a control unit 3 executes an edit process according to the edit data of the edit data recording unit 4.

The operation of the conventional image editing apparatus configured as described above will be described by taking an editing operation generally called insert editing as an example. In insert editing, a part of the image of the master tape on the master VTR2,
The replacement is performed by inserting and recording the image of the original tape on the original VTR1. First, the control unit 3
Thus, the master VTR 2 is controlled so that the insertion start point on the master side is determined and registered in the edit data recording unit 4.
Next, the control unit 3 controls the original VTR 1 to determine the start point and the end point of the inserted image of the original tape and register it in the edit data recording unit 4. As described above, since the information necessary for one edit point is prepared, the control unit 3 follows the data registered in the edit data recording unit 4 as follows.
The original VTR1 and the master VTR2 are controlled, and the insertion copy from the original VTR1 to the master VTR2 is executed (for example, JP-A-63-268178).
(See the official gazette).

[0005]

However, in the above configuration, since the medium for editing is a tape, the access speed is slow, and it takes time in seconds to reach the desired editing point. There is a problem that editing work cannot be performed smoothly because a preroll for phase adjustment is indispensable.

Further, in order to realize special reproduction images such as slow reproduction and still images on the original VTR 1 side, it is necessary to accurately trace the recording tracks on the original tape with the rotating magnetic head.
However, there is a problem that the structure becomes complicated, such as a mechanism for displacing the magnetic head on the rotary cylinder in the vertical direction according to the tape speed.

As a method for solving the problem of the above embodiment, there is a method in which the entire contents of the original tape are once transferred to a randomly accessible disk device and edited. That is, instead of the original VTR 1 of FIG. 5, by replacing the original tape with a disk device to which all the contents of the original tape have been transferred, editing is first performed on this disk, and editing processing data is registered in the editing data recording unit 4, control The section 3 can execute the edit processing according to the edit processing data of the edit data recording section 4.

However, in such a structure, it is necessary to use an extremely large-capacity magnetic disk device capable of recording the entire contents of the original tape on the original side in order to perform the editing process at high speed and easily. However, image information has a very large capacity, and a high-speed and large-capacity storage device has a problem that the cost is high and the maximum capacity is limited in terms of hardware.

In view of the above problems, it is an object of the present invention to provide an image editing apparatus capable of performing editing processing at high speed and easily without using a large-capacity disk device.

[0010]

In order to solve the above problems, an image editing apparatus according to the present invention comprises a tape drive for recording and reproducing an information signal and a part of the information signal recorded in the tape drive. A randomly accessible disk device that is transferred and recorded, a control unit that edits an information signal recorded in the disk device to create edit processing data, and a process that sends the information signal recorded in the disk device by the edit processing data And a structure in which after transmitting the information signal recorded in the disk device, the remaining part of the information signal recorded in the tape drive device is sequentially transferred to the disk device, and editing and transmission are repeated. It is a thing.

Further, in the image editing apparatus of the present invention, at least the tape driving device on the tape is located from the beginning of each of the tape driving device for recording and reproducing the information signal and the plurality of information signals recorded in the tape driving device. A random-accessible disk device in which only partial information corresponding to the time required to move the tape from any position to any position is recorded, and an information signal recorded in the disk device is edited to create edit processing data. A configuration that includes a control unit and a processing unit that sends an information signal recorded in the disk device according to edit processing data, and outputs the partial information recorded in the disk device while the tape drive device is moving the tape. It is equipped with.

Furthermore, the image editing apparatus of the present invention comprises a tape drive apparatus for recording / reproducing an information signal and a randomly accessible first section in which a part of the information signal recorded in the tape drive apparatus is alternately transferred and recorded. First and second disk devices, a controller for alternately editing information signals recorded in the first and second disk devices to create edit processing data, and first and second disk devices based on the edit processing data And a processing unit for transmitting the information signal recorded in
A configuration in which while the information signal recorded in one of the first and second disk devices is being edited, the remaining part of the information signal recorded in the tape drive is transferred to the other disk device. It is equipped with.

[0013]

According to the present invention, since the editing work is carried out on the disk device which can be randomly accessed by the above-mentioned constitution, the access speed is high and the work can be carried out smoothly, and further, it can be carried out without using a large capacity disk device. Therefore, an image editing apparatus capable of highly efficient editing work can be realized at a low price.

Furthermore, since special reproduction images such as slow reproduction and still images can be easily realized on the disc device, the image editing device can be realized with a relatively simple structure.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An image editing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the arrangement of an image editing apparatus according to the first embodiment of the present invention. In FIG.
1 is an original VTR for reproducing an original tape containing original image information to be edited, 3 is an original VTR
A control unit for controlling the TR1, the disk device 5, and the processing unit 6,
Reference numeral 4 denotes an edit data recording unit, and the control unit 3 executes edit processing according to the edit data of the edit data recording unit 4. Reference numeral 6 denotes a processing unit for transmitting an information signal recorded in the disk device 5 in accordance with edit processing data, and 2 is a master VTR connected to the processing unit 6 for creating a master tape being edited.

The operation of the image editing apparatus of the present invention will be described in detail with reference to the embodiment configured as described above.

First, the control unit 3 controls the original VTR.
1 and the disk device 5 are controlled, and a portion to edit image information on the original tape loaded in the original VTR 1 is transferred and recorded in the disk device 5. Meanwhile, the processing unit 6 rewinds for a predetermined time (called a pre-roll) so that recording can be performed from the insertion start point of the master tape loaded in the master VTR 2 and prepares for the next editing.
On the disc device 5, first, the start point and end point of the inserted image information on the original side of the image information copied from the original VTR 1 are determined and registered in the edit data recording unit 4. As described above, since the edit start point and the edit end point of the image information copied to the disk device 5 are determined, the control unit 3 executes the edit process according to the edit process data registered in the edit data recording unit 4, The image information copied in 5 is sent to the master VTR via the processing unit 6.
2 and recorded on the master tape. Thereafter, similarly, the other portion of the image information to be edited next on the original tape loaded in the original VTR 1 is sequentially transferred and recorded to the disk device 5, and the image information recorded on the disk device 5 is recorded. Edit process is executed for
It is sequentially transmitted to the master VTR 2 via the processing unit 6.

As described above, according to this embodiment, when the image information on the original tape is edited, the fine movement for determining the editing point and the special reproduction such as the slow reproduction do not move the tape of the original VTR at all. Since all editing work can be performed on a random-accessible high-speed disk device, extremely smooth and highly efficient editing work is possible.

FIG. 2 is a block diagram showing the arrangement of an image editing apparatus according to the second embodiment of the present invention. It should be noted that those having the same functions as those in FIG.

In FIG. 2, the difference from the embodiment of FIG. 1 is that in the embodiment of FIG. 1, the reproduction signal of the original VTR 1 is only transferred and recorded in the disk device 5.
In the embodiment shown in FIG. 2, the reproduction signal of the original VTR 1 is not only transferred and recorded in the disk device 5, but also directly transferred to the processing unit 6. Note that the original tape loaded in the original VTR 1 in the embodiment of FIG. 2 is preliminarily edited with rough start and end points (referred to as pre-editing) and registered in the edit data recording section 4. .

The operation of the image editing apparatus according to the present invention will be described in detail with reference to the drawings based on the embodiment configured as described above.

FIG. 3 is an explanatory view for explaining the operation of the image editing apparatus shown in FIG. 2. The images recorded on the original tape loaded on the original VTR 1, the disk inside the disk device 5 and the original tape loaded on the master VTR 2 are shown. The content of the information is shown schematically. In FIG. 3, 3
Reference numeral 1 is an original tape, which has a plurality of editing portions to be edited. A magnetic head 32 indicates the current position. Reference numeral 34 is a disc in which the first part of each edited part of the original tape is recorded. Reference numeral 34 is a master tape, on which the edited result of the original tape is recorded. In the case of editing with the image editing apparatus configured as described above, one editing portion (recording time is T) of the starting point t1 and the ending point t2 on the original tape 31.
The procedure for editing will be described. First, the recording location of the image on the master tape 34 is determined. Next, the edit start point is more finely determined on the disc 33 on which the head portion τ of the edit portion to be edited is recorded. If determined, the recorded contents of the disk 33 are transferred and recorded on the master tape 34. Meanwhile, the original tape 31 starts moving, and the magnetic head reaches the target position within the time τ. Then, instead of the disk 33, the recorded contents of the original tape are continuously transferred and copied to the master tape 34.

As described above, according to this embodiment, even a device having an extremely low access speed, such as a tape drive device, is used in combination with a disk device capable of random access and an extremely high access speed, and the editing portion is used. By recording the head portion of the, it is possible to avoid the access delay that occurs when the reproduction is started by the tape drive device. That is, quick editing work can be performed, and extremely smooth and highly efficient editing work is possible.

FIG. 4 is a block diagram showing the arrangement of an image editing apparatus according to the third embodiment of the present invention. It should be noted that those having the same functions as those in FIG.

In FIG. 4, the difference from the embodiment of FIG. 1 is that the number of connected disk devices 5 is 1 in the embodiment of FIG.
In the embodiment of FIG. 4, the connected disk devices are configured so that the two disk devices are operated in parallel.
In FIG. 4, 25a and 25b are disk devices, 4
Reference numeral 1 is a switching circuit, and the output of the original VTR 1 is distributed to the disk device 25a and the disk device 25b. The outputs of the disk devices 25a and 25b are connected to the processing unit 6, respectively. The control unit 23 uses the original VTR1,
The switching circuit 41, the two disk devices 5a and 5b, and the processing unit 6 are controlled, and the editing process is executed according to the editing process data of the editing data recording unit 4.

The operation of the image editing apparatus of the present invention will be described in detail based on the embodiment configured as described above.

First, the control unit 3 controls the original VTR.
The one and two disk devices 5a and 5b are controlled, and the part to edit the image information on the original tape loaded in the original VTR1 is the two disk device 5
The data is alternately transferred and recorded in a and b. Meanwhile, the processing unit 6
Is rewound for a predetermined time (called a pre-roll) so that recording can be performed from the insertion start point of the master tape loaded in the master VTR 2 and is ready for the next editing.

First, of the two disk devices 5a and 5b, on the disk device 5a, the original VTR
The start point and end point of the inserted image on the original side of the image information copied from 1 are determined, and the edit data recording unit 4
Be registered with. As described above, since the edit start point and the end point of the image copied to the disk device 5a are determined, the control unit 3 executes the edit process according to the edit process data registered in the edit data recording unit 4, and the disk device 5a
The image copied to is sent to the master VTR 2 via the processing unit 6 and recorded on the master tape.

At the same time, the control section 3 tries to edit the image information on the original tape next, in preparation for the next editing work, while the image copied on the disk device 5a is being edited. Is recorded on the disk device 5b. Further, the processing unit 6 prerolls the master VTR 2 so that recording can be performed from the insertion start point of the next edit of the master tape.

In the same manner, the portion to edit the image information on the original tape loaded in the original VTR 1 is similarly transferred and recorded alternately to the two disk devices 5a and 5b, and the two disk devices 5a. 5b, edit processing is executed on the copied image information, and the edited image information is sequentially transmitted to the master VTR 2 via the processing unit 6.

As described above, according to this embodiment, when the image information on the original tape is edited, the fine movement for determining the editing point and the special reproduction such as the slow reproduction do not move the tape of the original VTR at all. All editing work can be done on a high speed disk drive with random access. Also, in the embodiment of FIGS. 1 and 2,
The original VTR 1 and the disk device 5 are controlled by the control unit 3.
It was necessary to suspend the editing work while the portion of the original tape loaded in the original VTR 1 was controlled and the portion to be edited was transferred and recorded in the disk device 5. However, in the embodiment shown in FIG. 4, by using the two disk devices 5a and 5b, the image information recorded in one of the two disk devices 5a and 5b is being edited. In addition, since the image information recorded on the original tape to be edited next is transferred to the other disk device, it is not necessary to suspend the editing work, and extremely smooth and highly efficient editing work is possible. .

In this embodiment, when the portion of the original VTR to be edited on the original tape is transferred and copied to the disk device, the tape speed of the original VTR is set to the normal speed, but it is not limited to the normal speed. The transfer may be performed in a high speed mode of double speed or quadruple speed. As described above, when the original VTR is used in the high speed mode, it is possible to shorten the time during which the portion of the original tape to be edited is transferred and recorded in the disk device 5, and the downtime of the editing work is shortened. You can

In the present embodiment, the image signal transferred from the original VTR has been described as uncompressed data, but the image signal recorded in the disk device is the original VTR.
The signal during TR reproduction may be compressed into digital information of a predetermined bit rate and recorded in the disk device. By recording the compressed image information in the disk device as described above, the required capacity of the disk device can be further reduced.

[0035]

As described above, according to the present invention, since the editing work is performed on the disk device which can be randomly accessed, the access speed is high and the work can be carried out smoothly, and the large-capacity disk device is not used. We have realized an image editing device that enables highly efficient editing work. Furthermore, since special reproduction images such as slow reproduction and still images can be easily realized on the disk device, it is possible to provide an image editing apparatus having a special reproduction function with a relatively simple configuration.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a first embodiment of an image editing apparatus of the present invention.

FIG. 2 is a block diagram showing a configuration of a second embodiment of the image editing apparatus of the invention.

FIG. 3 is a block diagram showing a configuration of a third embodiment of the image editing apparatus of the invention.

FIG. 4 is an explanatory diagram of an embodiment according to the present invention.

FIG. 5 is a block diagram showing a configuration of a conventional image editing apparatus.

[Explanation of symbols]

 1 original VTR 2 master VTR 3 control unit 4 edit data recording unit 5 disk device 6 processing unit

Claims (7)

[Claims] 1. A tape drive device for recording / reproducing an information signal, a random accessible disk device to which a part of the information signal recorded in the tape drive device is transferred and recorded, and a tape device recorded in the disk device. A control unit that edits an information signal to create edit processing data, and a processing unit that sends the information signal recorded in the disk device by the edit processing data, and sends the information signal recorded in the disk device After that, the image editing apparatus is configured so that the remaining part of the information signal recorded in the tape driving device is sequentially transferred to the disk device, and the editing and sending are repeated. 2. A tape drive device for recording / reproducing an information signal, and at least the tape drive device from an arbitrary position on the tape from a head of each of a plurality of information signals recorded in the tape drive device. A randomly accessible disk device in which only partial information corresponding to the time required to move the tape is recorded, a controller for editing the information signal recorded in the disk device to create edit processing data, and the editing A processing unit for transmitting an information signal recorded in the disk device according to the processed data, and is configured to output the partial information recorded in the disk device while the tape drive device is moving the tape. An image editing device characterized by the above. 3. An information signal recorded on a disk device is transmitted through a data compression processing unit for converting a signal at the time of reproduction of the tape drive device into digital information of a predetermined bit rate. The image editing apparatus according to claim 1 or 2. 4. A tape drive device for recording / reproducing an information signal and a first random accessible device in which a part of the information signal recorded in the tape drive device is alternately transferred and recorded.
And a second disk device, a controller for alternately editing the information signals recorded in the first and second disk devices to create edit processing data, and the first and second disk devices based on the edit processing data. A processing unit for transmitting an information signal recorded in the disk device, wherein the first and second
Of the other disk devices, the remaining part of the information signal recorded in the tape drive device is transferred to the other disk device while the information signal recorded in one of the disk devices is being edited. An image editing device characterized by. 5. An information signal recorded in the first and second disk devices is transmitted through a data compression processing section for converting a signal at the time of reproduction of the tape drive device into digital information of a predetermined bit rate. The image editing apparatus according to claim 4, wherein 6. The image editing apparatus according to claim 1, wherein the information signal recorded in the disc device is subjected to special processing on the disc by the processing unit and then sent out. 7. The tape drive device records a digital information signal, and the signal bit rate at the time of reproduction is set to be higher than the bit rate at the time of reading from the disk device. 4. The image editing device described in 4.