JPH09245466A - Non-linear editing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-linear editing apparatus which can realize reproduction with a special effect added without use of a costly disc device higher in access speed. SOLUTION: In recording of an information signal having a video signal, a voice signal and added information per specified time as one block into a recording medium possessed by a HDD 102, a temporary area is provided for recording at a position successively to a recording position of each block. When a special effect is added during the non-linear editing, all information signals of a necessary block and partial information of the block are previously copied. Thus, in the reproducing operation, the information signal of one block and the information signal recorded in the temporary area are reproduced continuously within the specified time as mentioned above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-linear editing apparatus capable of easily adding a special effect when an information signal recorded on a recording medium of a random access recording / reproducing means is edited and an edited result is reproduced. Is.

[0002]

2. Description of the Related Art A non-linear editing device has a random access recording / reproducing device such as a fixed disk device (hereinafter referred to as HDD), and a video signal is recorded on a disc-shaped recording medium of the random access recording / reproducing device. It is intended to shorten the time required for editing work by recording the audio signal and the additional information, and taking advantage of the accessibility of the random access recording / reproducing apparatus. Further, the non-linear editing apparatus also has a function of processing an information signal such as a digital video effect or an audio crossfade at an editing point.

Here, a series of operations generally involved in nonlinear editing will be described. First, the video signal, the audio signal, and the additional information for each frame time are recorded in the HDD. Then, while confirming the reproduction of the information signal recorded in the HDD,
Determine edit points for video and audio signals,
Furthermore, the special effect to be added is determined at the edit point. Finally,
The editing work is completed by confirming the reproduction of the editing result.

Now, the operation of the conventional non-linear editing apparatus will be described along with a series of operations involved in non-linear editing with reference to the drawings.

First, when recording a video signal and audio signal and additional information for each frame time on a disk-shaped recording medium included in the HDD, one block of the video signal and audio signal (2 channels) and additional information for each frame time is recorded. Information signals are continuously and sequentially recorded on a disk-shaped recording medium included in the HDD. FIG. 7A shows the relationship between the recording position and the recording signal of the disk-shaped recording medium in which the HDD records the video signal, the audio signal (2 channels) and the additional information. As shown in FIG. 7A, the information signal of each block is continuously recorded on the disk-shaped recording medium included in the HDD without a free area. Next, while confirming the reproduction of the information signal recorded in the HDD, the edit point of the video signal and the audio signal and the special effect to be added at the edit point are determined, so that the edit point of the video signal is different from the edit point of the audio signal. Further, an edit result of adding a crossfade at the edit point of the audio signal is obtained.

FIG. 7B shows the relationship between the information signal recorded in the HDD and the edit point. As shown in FIG. 7B, the edited result has 2 cuts for both the video signal and the audio signal. That is, the first cut IN, O of the video signal
The UT points are the first and third blocks, the IN and OUT points of the second cut are the twelfth and thirteenth blocks, respectively, and the IN and OUT points of the first cut of the audio signal are the first and third blocks, respectively. 2 blocks, 2nd cut IN,
The OUT points are the 10th and 13th blocks, respectively, and crossfades are applied to the connection portion of the two cuts of the audio signal. Then, the reproduction confirmation of the edited result is confirmed.

FIG. 8 shows the relationship between the elapsed playback time and the blocks required for playback. As shown in FIG. 8, when the HDD is reproduced according to the editing result, 1 from time T0 to T1
For the frame time, the head of the first block is accessed, the information of the first block is read to reproduce the video signal and the audio signal of the first block, and for the one frame time from time T1 to T2, the head of the second block is accessed. The information of 2 blocks is read, and further, the head where the audio signal of the 10th block is recorded is accessed and the audio signal is read to reproduce the video signal of the 2nd block and the audio signals of the 2nd and 10th blocks. For one frame time from T2 to T3, the head of the third block is accessed and the video signal is read, and further the head where the audio signal of the eleventh block is recorded is read and the audio signal is read to obtain the video signal of the third block. The audio signal of the 11th block is reproduced, and from time T3 to T
For one frame time of 4, the head of the 12th block is accessed, the information of the 12th block is read, and the video signal and the audio signal of the 12th block are reproduced, and the 1 frame time of time T4 to T5 is the head of the 13th block. Access thirteenth
The information of the block is read and the video signal and the audio signal of the 13th block are reproduced.

[0008]

However, in the above-mentioned conventional non-linear editing apparatus, when performing split editing or crossfade of an audio signal or performing reproduction with a special effect added to a video signal, it takes less than one frame time. HD
Information must be read by accessing two discontinuous areas on the recording medium D. Further, the seek time is required for the HDD to access the target position on the recording medium. Therefore, if an HDD with a slow access speed (long seek time) is used, the H
Information cannot be read by accessing two discontinuous areas of a DD recording medium, and split editing of audio signals, crossfade, and reproduction with special effects added to video signals cannot be realized.

The present invention solves the above problems and adds a special effect to audio signal split editing and crossfade, and a video signal without using an expensive disk device having a high access speed (short seek time). It is an object of the present invention to provide a non-linear editing device that can realize the above reproduction.

[0010]

In order to achieve this object, a nonlinear editing apparatus of the present invention uses a random access recording / reproducing means for a video signal and an audio signal at predetermined time intervals and an information signal having one block of additional information. When recording on a recording medium that has, if a temporary area is provided at a position continuous with the recording position of each block and special effects are added during non-linear editing, the temporary area corresponding to the block to which the special effect is added is added. , A necessary information signal of the entire block or a part of the information of the block is copied, and at the time of reproduction, the information signal of one block and the information signal recorded in the temporary area are reproduced together during the reproduction to obtain a special effect. The adding means adds a special effect based on the reproduced one-block information signal and the information signal recorded in the temporary area. It is intended to.

Further, the non-linear editing apparatus of the present invention records each block when recording the information signal having the video signal, the audio signal and the additional information as one block for each predetermined time on the recording medium included in the random access recording / reproducing means. When a temporary area is recorded at a position continuous with the recording position of, and special effects are added during non-linear editing, save the result of adding special effects to the temporary area corresponding to the block to which the special effect is added. In addition, when reproducing, the entire block or a part of the block to which the special effect is added is replaced with the information signal recorded in the temporary area and is output.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The nonlinear editing apparatus of the present invention is
When recording the video signal and the audio signal at predetermined time intervals and the information signal having one block as additional information on the recording medium of the random access recording / reproducing means, a temporary area is provided at a position continuous with the recording position of each block. Since the information necessary for adding special effects is recorded in the temporary area in the temporary area, when performing reproduction with special effects, one discontinuous area of the recording medium of the HDD is recorded within a predetermined time. Since it is sufficient to read information continuously after only accessing, split editing of audio signals, crossfade, and video signals can be performed without using an expensive random access recording / playback device with high access speed (short seek time). It is possible to realize playback with special effects added to.

In addition, the result of adding the special effect to the split edit or crossfade of the audio signal and the video signal is recorded in the temporary area, and when outputting the result, the output signal is switched, so that an external mixing device is unnecessary. .

An embodiment of the non-linear editing apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a nonlinear editing apparatus according to the first embodiment of the present invention.

The random access recording / reproducing means 101 is
It is composed of the HDD 102, and the special effect adding means is the mixer 1.
03. The mode designated by the operation panel 104 is sent to the system controller 105 by an electric signal. The system controller 105 is the operation panel 10
4 interprets the electric signal sent from the control panel 10
In order to realize the mode specified from No. 4, the HDD 10
2 and the command to the mixer 103. The HDD 102 and the mixer 103 operate according to the command sent from the system controller 105.

Now, the operation of the non-linear editing apparatus having the above structure will be described below. First, when the recording mode is designated from the operation panel 104, the mode is sent to the system controller 105 as an electric signal. The system controller 105 sends a recording command to the HDD 102 and the mixer 103 based on this mode designation. When the recording command is received, the mixer 103 stops operating, and the HDD 102 causes the video input terminal 106, the first audio input terminal 107, and the second audio input terminal 1 to be placed on the magnetic disk.
08, the video signal, the audio signal (2 channels), and the additional information input from the additional information input terminal 109 for each frame time are recorded.

FIG. 2A shows the relationship between the recording position on the magnetic disk of the HDD 102 and the recorded information signal. As shown in FIG. 2A, when a video signal and an audio signal (2 channels) for each frame time and an information signal having one block of additional information as one block are recorded on the magnetic disk of the HDD 102, A temporary area is provided at a position continuous with the recording position for recording.

Next, when the recording mode is stopped and the edit mode is designated from the operation panel 104, the mode is sent to the system controller 105 as an electric signal. The system controller 105 sets the HD based on this mode designation.
A normal reproduction command is sent to D102 and the mixer 103. When the normal reproduction command is received, the HDD 102 sequentially reproduces the information signals recorded on the magnetic disk, and the mixer 10
Reference numeral 3 denotes the video signal and the audio signal (2 channels) reproduced from the HDD as they are and the video output terminal 110 and the first and second signals.
It outputs to the audio output terminals 111 and 112. By confirming the video signal and the audio signal output from each output terminal on the monitor or the speaker, by specifying the edit point of the video signal and the audio signal and the special effect to be added at the edit point from the operation panel 104, The same editing result as that of the conventional example is obtained in which the editing point is different from the editing point of the audio signal and the crossfade is added at the editing point of the audio signal. The obtained edited result is sent to the system controller 105 as an electric signal. When the editing result is sent, the system controller 105 copies the necessary audio signal to the temporary areas corresponding to the blocks to which the audio signal is split-edited and the crossfade is added.

FIG. 2B shows the relationship between the information signal recorded in the HDD and the edit point. As shown in FIG. 2B, the audio signal of the tenth block is copied to the second temporary area corresponding to the second block to which the crossfade is added, and further corresponds to the third block to be split-edited. The audio signal of the 11th block is copied to the third temporary area.

Further, when the reproduction confirmation mode of the edited result is designated from the operation panel 104, the mode is sent to the system controller 105 as an electric signal. Upon receiving this mode designation, the system controller 105 causes the HDD 102 and the mixer 10 to perform reproduction according to the edited result.
Send the operation command to 3.

FIG. 3 shows the relationship between the elapsed playback time and the blocks required for playback. As shown in FIG.
In one frame time from 0 to T1, the HDD 102 stores the first
The head of the block is accessed to continuously reproduce the information of the first block and the first temporary area, and the mixer 103 outputs the video signal and the audio signal (2 channels) of the first block as they are to the video output terminal 110 and the first audio. Output terminal 11
It outputs to the 1st, 2nd audio | voice output terminal 112. In one frame time from time T1 to time T2, the HDD 102 accesses the beginning of the second block and continuously reproduces the information of the second block and the second temporary area, and the mixer 103 outputs the video signal of the second block as it is. The audio signal of the second block (2 channels) and the audio signal of the 10th block (2 channels) which is the reproduction output of the second temporary area are cross-faded to the first output terminal 110.
The sound is output to the sound output terminal 111 and the second sound output terminal 112.

In one frame time from time T2 to T3,
The HDD 102 accesses the beginning of the third block and continuously reproduces the information of the third block and the third temporary area, and the mixer 103 outputs the video signal of the third block as it is to the video output terminal 110, and then the third block. The audio signal (2 channels) of the 11th block, which is the reproduction output of the temporary area of, is directly output to the first audio output terminal 111 and the second audio output terminal 112.

In one frame time from time T3 to T4,
The HDD 102 accesses the beginning of the 12th block to access the first
The information of the second block and the twelfth temporary area is continuously reproduced, and the mixer 103 outputs the video signal and the audio signal (2 channels) of the twelfth block as they are to the video output terminal 11
0, first audio output terminal 111, second audio output terminal 112
Output to

In one frame time from time T4 to T5,
The HDD 102 accesses the beginning of the 13th block to access the first
The information of the third block and the thirteenth temporary area is continuously reproduced, and the mixer 103 outputs the video signal and the audio signal (2 channels) of the thirteenth block as they are to the video output terminal 11
0, first audio output terminal 111, second audio output terminal 112
Output to

As can be seen from the above description, according to the configuration of this embodiment, when the reproduction with the special effect is performed, only one discontinuous area on the magnetic disk of the HDD 102 is formed within one frame time. Since information can be continuously read after accessing, split editing of audio signals, crossfading, and video signals can be performed without using an expensive random access recording / playback device with fast access speed (short seek time). Playback with special effects can be realized.

In the description of the present embodiment, the special effect is added only to the audio signal, but the video signal is also reproduced by copying the information necessary for adding the special effect to the temporary area. It is possible to add special effects to signals. Further, when the special effect is not performed, the temporary area can be effectively used without wasting the capacity of the HDD by using the temporary area as an additional channel of audio. Further, in the description of the present embodiment, the random access means is the HDD and the information signal input in the recording mode is the information signal for each one frame time, but this is for the sake of easy understanding. The present invention is not limited to this case, and various modifications can be made.

The second embodiment of the present invention will be described below. FIG. 4 is a block diagram of a nonlinear editing device according to the second embodiment of the present invention.

As shown in FIG. 4, the configuration of the nonlinear editing apparatus according to the second embodiment of the present invention is similar to the configuration of FIG. 1 shown in the first embodiment, except that the mixer 103 is different. This means that the output switching unit 401 is replaced by the output switching unit 401.
The output is switched as instructed from 5. Also, the first
Of the components common to the second embodiment and
Only the system controller 104 operates differently.

Now, the operation of the non-linear editing apparatus having the above structure will be described below. The operation when the recording mode is specified from the operation panel 104 is the first operation.
The same operation as in the above embodiment is performed. That is, the HDD 10
The relationship between the recording position on the second magnetic disk and the recorded information signal is the same as that shown in FIG.

Next, when the edit mode is designated by stopping the recording mode from the operation panel 104, the mode is sent to the system controller 105 as an electric signal. The system controller 105 uses the HDD 10 in this mode.
The normal reproduction command is sent to 2, and the HDD 102 sequentially reproduces the information signals recorded on the magnetic disk. In response to a command from the system control 105, the output switching unit 401 outputs the audio signal (2 channels) reproduced by the HDD 102 as it is to the first and second audio output terminals 111 and 11.
Output to 2.

By confirming the video signal and the audio signal output from each output terminal on the monitor or the speaker, the edit point of the video signal and the audio signal and the special effect to be added at the edit point are specified from the operation panel 104. The same editing result as in the conventional example is obtained in which the editing point of the video signal is different from the editing point of the audio signal, and the crossfade is added at the editing point of the audio signal. The obtained edited result is sent to the system controller 105 as an electric signal. Upon receiving the editing result, the system controller 105 copies the necessary audio signal to the temporary area corresponding to the block in which the audio signal is split-edited, and crossfades the temporary area corresponding to the block to which the crossfade is added. Record the result obtained by adding in a software manner.

FIG. 5 shows the relationship between the information signal recorded in the HDD and the edit point. As shown in FIG. 5, in the second temporary area corresponding to the second block to which the crossfade is added, the result obtained by softly adding the crossfade is recorded and further split-edited. The audio signal of the eleventh block is copied to the third temporary area corresponding to the third block.

Further, when the reproduction confirmation mode of the edited result is designated from the operation panel 104, the mode is sent to the system controller 105 as an electric signal. Upon receiving this mode designation, the system controller 105 sends a command and a command to the HDD 102 and the output switching means 401, respectively, so as to perform reproduction according to the edited result.

FIG. 6 shows the relationship between the elapsed playback time and the blocks required for playback. As shown in FIG.
In one frame time from 0 to T1, the HDD 102 stores the first
The head of the block is accessed to continuously reproduce the first block and the first temporary area, and the output switching unit 401 outputs the audio signal (2 channels) of the first block as it is to the first audio output terminal 111 and the second audio output. The system controller 105 commands the output to the terminal 112.

In one frame time from time T1 to T2,
The HDD accesses the head of the second block and continuously reproduces the information of the second block and the second temporary area, and the output switching unit 401 outputs the sound to which the crossfade that is the reproduction output of the second temporary area is added. The signal (2 channels) is sent to the first audio output terminal 111 and the second audio output terminal 11
The system controller 105 is instructed to output the data to the second.

In one frame time from time T2 to T3,
The HDD 102 accesses the head of the third block to access the third block.
The information of the block and the third temporary area is continuously reproduced, and the output switching unit 401 outputs the audio signal (2 channels) of the eleventh block which is the output of the third temporary area as it is to the first audio output terminal 111, the first audio output terminal 111. 2 Audio output terminal 1
The system controller 105 is instructed to output the data to 12.

In one frame time from time T3 to T4,
The HDD 102 accesses the beginning of the 12th block to access the first
The information of the two blocks and the twelfth temporary area is continuously reproduced, and the output switching unit 401 outputs the audio signal (two channels) of the twelfth block as it is to the first audio output terminal 11.
The system controller 105 is instructed to output to the first and second audio output terminals 112.

In one frame time from time T4 to T5,
The HDD 102 accesses the beginning of the 13th block to access the first
The information of the three blocks and the information of the thirteenth temporary area is continuously reproduced, and the output switching means 401 outputs the audio signal (2 channels) of the thirteenth block as it is to the first audio output terminal 11.
The system controller 105 is instructed to output to the first and second audio output terminals 112.

As can be seen from the above description, according to the configuration of the present embodiment, when the reproduction with the special effect is performed, only one discontinuous area on the magnetic disk of the HDD 102 is formed within one frame time. Since information can be continuously read after accessing, split editing of audio signals, crossfading, and video signals can be performed without using an expensive random access recording / playback device with fast access speed (short seek time). Playback with special effects can be realized. In addition, the information recorded in the temporary area is the result of the system controller performing special effects in software, so there is no need for complicated components such as a mixing device on the output side, and simple output switching such as a switch is possible. It can be configured by means.

Although the special effect is added only to the audio signal in the description of the present embodiment, the information of the result of adding the special effect to the temporary area is also recorded for the video signal, so that the video signal can be recorded. It is also possible to add special effects. Also, if you do not want special effects,
If the temporary area is used as an additional audio channel, it can be effectively used without wasting the capacity of the HDD. Further, in the description of the present embodiment, the random access means is the HDD and the information signal input in the recording mode is the information signal for each one frame time, but this is for the sake of easy understanding. The present invention is not limited to this case, and various modifications can be made.

[0042]

As is apparent from the above description, according to the non-linear editing apparatus of the present invention, when the reproduction with the special effect is performed, the discontinuous area of the random access recording / reproducing means is generated within a predetermined time. Since it is sufficient to read information continuously after accessing only one place, split editing of audio signals and crossfading, without using an expensive random access recording / playback device with fast access speed (short seek time), and Playback with special effects added to the video signal can be realized. That is, it is possible to provide a non-linear editing device that is inexpensive and can realize reproduction with various special effects added.

[Brief description of drawings]

FIG. 1 is a block diagram of a nonlinear editing device according to a first embodiment of the present invention.

FIG. 2A is a diagram illustrating H in the first embodiment of the present invention.
FIG. 6B shows the relationship between the recording position on the magnetic disk of the DD and the recorded information signal. FIG. 6B shows the relationship between the information signal recorded on the magnetic disk of the HDD and the editing point in the first embodiment of the present invention. Figure

FIG. 3 is a diagram showing a relationship between elapsed playback time and blocks required for playback in the first embodiment of the present invention.

FIG. 4 is a block diagram of a nonlinear editing device according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a relationship between an information signal recorded on a magnetic disk of an HDD and an edit point in the second embodiment of the invention.

FIG. 6 is a diagram showing a relationship between elapsed playback time and blocks required for playback in the second embodiment of the present invention.

FIG. 7A shows a conventional nonlinear editing device,
The figure which shows the relationship between the recording position on the magnetic disk of HDD and the recorded information signal. (B) is a figure which shows the relationship between the information signal recorded on the magnetic disk of HDD and an edit point in the conventional non-linear editing apparatus.

FIG. 8 is a diagram showing a relationship between elapsed playback time and blocks required for playback in a conventional nonlinear editing device.

[Explanation of symbols]

 101 random access recording / reproducing means 102 HDD 103 mixer 104 operation panel 105 system controller 106 video input terminal 107 first audio input terminal 108 second audio input terminal 109 additional information input terminal 110 video output terminal 111 first audio output terminal 112 second Audio output terminal 401 Output switching means

Front page continuation (72) Inventor Rifushi Nishida 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. In the laboratory

Claims (4)

[Claims] 1. When an image signal, an audio signal, and an information signal having one block of additional information at predetermined time intervals are recorded on a recording medium included in the random access recording / reproducing means, the information signal is recorded at a position continuous with the recording position of each block. If you want to add a special effect during non-linear editing by recording in a temporary area,
The necessary information signal of the entire block or partial information of the block is copied to the temporary area corresponding to the block to which the special effect is added, and at the time of reproduction, one block of the information signal and the temporary area are written to the temporary area. A non-linear editing apparatus, wherein the recorded information signal is reproduced together, and the special effect adding means adds a special effect based on the reproduced one block information signal and the information signal recorded in the temporary area. 2. When a video signal, an audio signal, and an information signal having one block of additional information at predetermined time intervals are recorded on a recording medium included in the random access recording / reproducing means, the recording signal is recorded at a position continuous with the recording position of each block. If you want to add a special effect during non-linear editing by recording in a temporary area,
The result of adding the special effect is stored in the temporary area corresponding to the block to which the special effect is added, and when the result is reproduced, the whole block or a part of the block to which the special effect is added is recorded in the temporary area. A non-linear editing device characterized by being output after being replaced with an information signal. 3. The size of the temporary area is substantially the same as the area in which the audio signal is recorded every predetermined time, and when processing the audio signal, the audio signal is processed in the temporary area. When the necessary information signal is recorded and edited, if the block to which the video signal to be reproduced at the same time belongs and the block to which the audio signal belongs are different, the block to which the video signal to be reproduced belongs The non-linear editing apparatus according to claim 1 or 2, wherein the non-linear editing apparatus records in a temporary area corresponding to. 4. An audio signal is composed of audio signals for four channels, and when recorded on a recording medium included in a random access recording / reproducing means, a temporary area is not provided, and the audio signal is processed or split-edited during non-linear editing. If not performed, the area for recording the audio signal is used as an audio signal for four channels, and if processing or split editing of the audio signal is performed during nonlinear editing, the area for recording the audio signal is for two channels. 3. The non-linear editing apparatus according to claim 1, wherein the audio signal and the audio signal of each channel are used as a temporary area for copying an audio signal required for processing or split editing.