JP2000324367A - Nonlinear recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly replace transmission sequence of video sources in a way that a program search operation time of each video source can be ensured in the case of adding, deleting a video source and rearranging the sequence of the video sources. SOLUTION: This nonlinear recording and reproducing device 18 has transmission lines V1, V2, and the sub transmission sequence of video resources is respectively set to the transmission lines V1, V2 in response to the main transmission sequence of the video sources. In this case, optical video sources X, Y adjacent to each other are assigned to the sub transmission sequence of the different transmission lines in the main transmission sequence due to the revision of the main transmission sequence.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for use in television broadcasting, and more particularly to a non-linear recording / reproducing apparatus which uses a disk medium such as a hard disk as a storage device so as to automatically adjust a video material transmission order. To the device to change to.

[0002]

2. Description of the Related Art In television broadcasting, a live broadcast video material (such as a video of a person making a comment, hereinafter referred to as a live video material) and a previously recorded video material (recorded video material) are alternately switched. Often broadcast (switching). FIG. 7 is a chart showing an example of such a video material transmission order (main line transmission order).
In addition, Arabic numerals are added to raw video materials, and alphabets are added to recorded video materials.

FIG. 9 shows two tape recorders 13 and 1.
5 is a block diagram showing an example of a conventional video transmission system using a camera 5 and a camera 12. FIG. The tape recorders 13 and 15 constitute a recording / reproducing device 17 as a whole.
Symbols such as A, B, etc. in the boxes of the tape recorders 13 and 15 are drawn based on the image material reproduction order to be reproduced by the tape recorders 13 and 15, respectively. Actually, the video tapes 13 and 15 are respectively replaced by the video tapes on which the video materials A, B, etc. are recorded in order, and the video materials are reproduced in the originally planned order. Video tapes are changed manually by a person each time, or an automatic video tape changing device is separately prepared. At this time, if only the video material transmitted by the recording / reproducing device 17 is viewed, as shown in FIG. 8, A, B, C, D,
It can be seen that they are transmitted in the order of E, F.

In the following, the order in which the recording / reproducing device 17 sends out video material is referred to as the main sending order of the recording / reproducing device 17. On the other hand, the transmission order of the video material of each of the tape recorders 13 and 15 is called a sub-transmission order. Codes such as v1-1 and v1-2 shown below each video material indicate the sub-transmission order set for each transmission line. For example, v1-1 means that the first transmission line V1 is transmitted first. In the figure, “...” Indicates the omission of the succeeding video material.

[0005] In the following description, "video material" includes audio at the same time, but also includes video only without audio. Also, even if there is no video and only audio is actually recorded,
In the present invention, it is described as "video material".

[0006] A plurality of video materials are recorded in advance as a recorded video material, which is edited in advance and used for actual broadcasting. Therefore, the required time of these recorded video materials is already determined before the broadcast. On the other hand, the required time of live video may vary depending on the progress of the program.

[0007] For this reason, switching from the raw video material to another video material is performed by manually operating the switcher SW while watching the progress of the program. That is,
Switcher SW, two tape recorders 13 and 15
And the sending lines V1, V2 and V3 of the respective cameras 12
By switching the video output (switching), the video material can be transmitted to the main line 10 in a desired order. In FIG. 9, only three transmission lines are shown. However, in an actual broadcasting station, a larger number of transmission lines are provided and these are switched.

Each video material is usually recorded on a separate video tape as described above. Therefore, in order to reproduce the next video material, a video tape replacement time and a cueing time for advancing the tape to the beginning of the video material recorded on this video tape are required. Hereinafter, the time required for the preparation for transmitting the video material will be referred to as the transmission preparation time.

In order to secure this transmission preparation time, if the main transmission order is, for example, A, B, C, the video material A
And the video tape recording the video material B to be broadcast next are not reproduced by the same tape recorder. Instead, as shown in FIG. 9, the tape recorder 13 is made to play back with different tape recorders.
, And 15 are set. Thus, while the video material A is being transmitted by the tape recorder 13, the tape recorder 15 prepares for transmission of the video material using the video tape on which the video material B is recorded.

In recent years, instead of video tape recorders, digital recording and reproduction of images has been performed using magnetic disk devices such as hard disks and magneto-optical disk devices. According to this, the video material recorded on the disc can be accessed at random, and the transmission order of the video material once recorded can be easily changed. Such a type of video recording / reproducing device is called a non-linear type because of its characteristic that random access is easy. At this time, the video signal is digitized, and an image compression technique such as MPEG may be used to further save the recording capacity.

On the other hand, in the video tape recorder, it takes time to change the video transmission order, such as changing the video tape or advancing or rewinding the tape. Therefore, it is suitable for sequentially transmitting video materials in a preset order, but is not suitable for complicated transmission order change. For this reason, a format using a conventional video tape recorder is called a linear type.

In a non-linear video recording / reproducing apparatus using a non-volatile storage device such as a disk medium, an arbitrary position of a video material can be very easily accessed. However, switching with a raw video material also requires the use of a switcher. There is. This is because, even in a non-linear video recording / reproducing apparatus, a cueing time is required for appropriately cueing a video material, and a switcher is used for switching to a raw video material whose time varies as described above. This is because manual operation using is necessary. For this reason, even when using a non-linear recording / reproducing apparatus, it is necessary to provide a plurality of transmission lines in the non-linear recording / reproducing apparatus.

FIG. 10 is a block diagram showing an example of a video transmission system using the non-linear recording / reproducing device 18. Components corresponding to those in FIG. 9 are denoted by the same reference numerals.
Dashed lines 14 and 16 indicate that they correspond to conventional video tape recorders. In the non-linear recording / reproducing device 18, a plurality of transmission lines can be provided in one unit. Here, the sub-transmission order of the video material on the first and second transmission lines V1 and V2 is virtually illustrated by using reference numerals A, B, C, D, and F.

[0014]

In a news program or the like, there is a case where it is desired to add a video material immediately before broadcasting. Conversely, there may be a case where the broadcast time is short and it is desired to delete a video material scheduled to be broadcast, or a case where it is desired to change the broadcast order. Therefore, consider the case where a recorded video material A ′ is added next to the video material A using a non-linear recording / reproducing apparatus, for example, as shown in the main line transmission order in FIG. FIG. 12 shows the main transmission order of the non-linear recording / reproducing device 18 before and after the change in this case. It is assumed that the video material A 'was originally recorded but was not scheduled to be broadcast at first.

FIG. 13 is a diagram showing an example of the transmission order of the video material of each transmission line in the example of FIG. Since the recorded video material A 'is transmitted after the recorded video material A, the transmission lines of the video materials A and A' need to be different from each other. Therefore, the video material A 'is arranged at the first v2-1 in the sub-transmission order of the second transmission line V2. Then, the original video material of the second transmission line V2 other than the video material B is shifted backward in order by the interruption of the video material A '. It should be noted that such operations cannot be easily performed by a video tape recorder, but can be easily performed by a non-linear recording / reproducing apparatus.

FIG. 14 is a diagram showing the relationship between the main transmission order and the sub transmission order when the video material A 'shown in FIG. 11 is added. At this time, there is no problem because the video material A and the video material A 'to be transmitted next are arranged on different transmission lines. However, as shown by the dashed arrow, the video material B that is transmitted next to the video material A ′ has the next transmission order v on the same second transmission line V2 as the video material A ′.
It is allocated to 2-2. That is, since the video material A ′ and the video material B are adjacent to each other in the same sub-transmission order, the cueing operation time of the video material B cannot be secured.

Next, consider the case where the video material D is deleted from the transmission order shown in FIG. This may be considered as a case where the video material D is skipped. FIG. 15 is a diagram showing the relationship between the main transmission order and the sub transmission order according to this example.
In this case, the video material E is transmitted next to the video material C in the main transmission order. However, in the example of FIG. 15, as indicated by the dashed arrow, the same first transmission line V1
Since the video materials C and E are arranged adjacent to each other in the sub-transmission order, the cueing operation time of the video material E to be transmitted next cannot be secured while the video material C is being transmitted. The same occurs when the order of the video materials is changed.

Such a problem occurs because even when the non-linear recording / reproducing device 18 is used, it is conceived by a linear idea using a video tape recorder. In other words, this is because the transmission order is changed only for the added or deleted video material while the transmission order set in each of the broken lines 14 and 16 is maintained.

Therefore, when adding, deleting, or changing the order of video materials, the concept of a conventional linear type recording / reproducing apparatus is deviated, and the video material is searched so that the cueing operation time of each video material can be secured. It is necessary to be able to change the sending order appropriately.

[0020]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem by using a non-linear recording / reproducing apparatus capable of random access using a disk medium or the like. This non-linear recording / reproducing apparatus has a plurality of transmission lines, and the sub-transmission order of the video material is set for each of the plurality of transmission lines according to the main transmission order of the video material. At this time, when the main transmission order is changed, adjacent arbitrary video materials X and Y in the changed main transmission order are assigned to sub-transmission orders of different transmission lines.

At this time, the sub-transmission order after the main transmission order is changed may be determined by sequentially allocating the video materials assigned earlier in the changed main transmission order. The operation of replacing the video material is controlled by control means such as a microprocessor included in the non-linear recording / reproducing apparatus, and is realized by programming in advance. As a result, it is possible to make full use of the characteristic of random access of the non-linear recording / reproducing apparatus, and to appropriately exchange video materials for transmission.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a video material sending order of each sending line of a non-linear recording / reproducing apparatus 18 according to the present invention. In particular, a main sending order in which a video material A 'shown in FIG. 12 is added is realized. An example is shown. Note that the video material from the camera is not directly related to the present invention, and is therefore omitted here for simplicity. Hereinafter, components corresponding to those of the conventional example will be denoted by the same reference numerals.

FIG. 2 shows a video material A 'according to the invention.
FIG. 10 is a diagram showing the relationship before and after the change of the sub-transmission order of each transmission line in the case where is added. The sub-transmission order before the change is as shown in FIG. According to the present invention, by changing the main transmission order, video materials that are adjacent in the new main transmission order are rearranged on different transmission lines. For example, the video material A is included in the sub-transmission order of the first transmission line V1 before and after the change. However, the video materials B, D and F
Before the change, they are incorporated in the sub-transmission order of the second transmission line V2, but after the change, they are rearranged so as to be incorporated in the sub-transmission order of the first transmission line V1. Also, video material C
And E are rearranged so as to be incorporated into the sub-transmission order of the first transmission line V1 before the change, but are incorporated into the sub-transmission order of the second transmission line V2 after the change.

At this time, such a change in the sub-transmission order can be performed relatively easily because of the non-linear recording / reproducing apparatus. However, when a tape recorder is used, it is necessary to change the tape replacement order, which is complicated. . Note that the non-linear recording / reproducing device 18 has arithmetic control means such as a microprocessor, and can be automatically controlled by programming such a change in the sub-transmission order in advance.

FIG. 3 is a diagram showing the main transmission order before and after the change when the video material D is deleted from the main transmission order. FIG. 4 is a diagram showing the relationship before and after the change of the sub-transmission order of each transmission line in the case of FIG. Here, the video materials A, B, and C are output from the same transmission line before and after the change of the main transmission order. On the other hand, the video materials E and F are rearranged so as to be output from different transmission lines before and after the change of the main transmission order.

FIG. 5 is a diagram showing a main transmission order in which the image material is not added or deleted but the image material transmission order is changed as compared with the case of FIG. In this example, the main transmission orders of the video materials B and C and the video materials D and E are exchanged. FIG. 6 is a diagram showing before and after the change of the sub-transmission order of each transmission line in the main transmission order shown in FIG.

At this time, as a result of the change of the main transmission order,
For example, video materials A and C that were not adjacent before the change
Are adjacent to each other. Therefore, before the change, V1
Regarding the video materials A and C assigned in the sub-transmission order, first, the video material A is converted to the first v1-
1 and then assigns the video material C to the first v2-1 in the V2 sub-transmission order.

Looking at the video materials B and C, they are adjacent before and after the change of the main transmission order, but the transmission order is changed (reverse). From another point of view, it can be considered that the adjacency has come again due to the change in the main transmission order. Therefore, also in this case, an operation of allocating the video material B to the second v1-2 in the V1 sub-transmission order is performed after the video material C is allocated to the first v2-1 in the V2 sub-transmission order. As described above, the sub-transmission order after the main transmission order is changed is determined by sequentially allocating the video materials that are allocated earlier in the changed main transmission order. Below, video material E,
D, F...

Although the present invention has been described with reference to the examples, various applications are possible. For example, in the above-described example, an example has been described in which the non-linear recording / reproducing apparatus has two transmission lines, but the same can be applied to a case where there are three or more transmission lines. Although the above description has been made on the assumption that one non-linear recording / reproducing device is used, a plurality of transmission lines may be provided by using two or more non-linear recording / reproducing devices. In this case, by providing a data bus capable of exchanging video data at a speed higher than the standard video playback speed between a plurality of nonlinear recording and playback devices, an environment can be virtually regarded as one nonlinear recording and playback device. You just need to prepare.

[Brief description of the drawings]

FIG. 1 is a diagram showing a video material transmission order of each transmission line of a non-linear recording / reproducing apparatus according to the present invention.

FIG. 2 is a diagram illustrating a relationship before and after a change in a sub-transmission order of each transmission line when a video material A ′ is added according to the present invention.

FIG. 3 is a diagram illustrating a relationship between a main transmission order before and after a change when a video material D is deleted from the main transmission order.

FIG. 4 is a diagram illustrating a relationship before and after a change in a sub-transmission order of each transmission line when a video material D is deleted from a main transmission order.

FIG. 5 is a diagram illustrating the relationship between the main transmission order before and after the change when the transmission order of the video material is changed.

FIG. 6 is a diagram showing before and after the sub-transmission order of each transmission line is changed when the transmission order of the video material is changed.

FIG. 7 is a diagram showing an example of a video material transmission order on the main line.

FIG. 8 is a diagram illustrating an example of a main transmission order of the recording / reproducing device.

FIG. 9 is a block diagram showing an example of a conventional video transmission system using two tape recorders and a camera.

FIG. 10 is a block diagram showing an example of a video transmission system using a non-linear recording / reproducing device.

FIG. 11 is a diagram showing an example of a main-line video material transmission order when video material A ′ is added after video material A;

FIG. 12 is a diagram showing a main transmission order of the recording / reproducing apparatus before and after a change when a video material A ′ is added.

FIG. 13 is a diagram showing a conventional example of a sub-transmission order of each transmission line when a video material A ′ is added.

FIG. 14 is a diagram of a conventional example showing a relationship between a main transmission order and a sub transmission order when a video material A ′ is added.

FIG. 15 is a diagram of a conventional example showing a relationship between a main transmission order and a sub transmission order when a video material D is deleted from the transmission order.

[Explanation of symbols]

 10 main line 12 camera 13 tape recorder 14 part corresponding to tape recorder 15 tape recorder 16 part corresponding to tape recorder 17 linear recording / reproducing device 18 non-linear recording / reproducing device A to F video material A ′ video material A ′ video material to be added SW switcher V1 first Sending line V2 Second sending line

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuhiro Imoto 5-9-1, Kita-Shinagawa, Shinagawa-ku, Tokyo F-term in Sony Tektronix, Inc. (reference) 5C022 CA00 CA03

Claims (2)

[Claims] 1. A non-linear recording / reproducing apparatus having a plurality of transmission lines, wherein a sub-transmission order of the video material is set for each of the plurality of transmission lines in accordance with a main transmission order of the video material. A non-linear recording / reproducing apparatus, wherein, when the main transmission order is changed, arbitrary video materials X and Y adjacent in the main transmission order are assigned to the sub-transmission orders of the different transmission lines, respectively. 2. The method according to claim 1, wherein the sub-transmission order after the main transmission order is changed is determined by sequentially allocating the video material assigned earlier in the changed main transmission order. Claim 1
A non-linear recording / reproducing apparatus as described in the above.