JPH11126461A - Video editing device and its backup quality guarantee method, and information taking-in quality guarantee method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video editing device and its backup quality guarantee method in which backup quality can be guaranteed at the time of locking-up of the edition state for another recording and reproducing device and a video editing device and its information taking quality guarantee method by which information taking quality can be guaranteed when video information and the like are taken from an other recording and reproducing device. SOLUTION: Information STA about error processing decided in a record format is used as information for verifying quality at the time of backup for a digital VTR 2 from an editing device 1, the error information STA is checked at the reread-out directly after backup, and quality of backup processing is verified. When backup is not performed normally, rewriting is performed. The error information STA is used also as information for verifying quality at the time of reload for restoring the error information STA to an original editing state, the error information STA is checked at the time of reload, and quality of reload processing is verified. When reload is not performed normally, rewriting is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video editing apparatus capable of editing video and the like, and more particularly to a video editing apparatus capable of guaranteeing backup quality when backing up edited content to another recording / reproducing apparatus. The present invention relates to a backup quality assurance method thereof, a video editing apparatus capable of assuring the quality of information capture when capturing video information or the like from another recording / reproducing apparatus, and a method of assuring the quality of information capture.

[0002]

2. Description of the Related Art Conventionally, offline editing is one of the methods for editing video information recorded on a recording medium such as a video tape. Offline editing involves temporarily copying video information recorded on the original tape at the shooting site to another recording tape, that is, an editing tape, creating editing data such as editing points on the editing tape, and This is a method for creating a master tape based on the master tape. In this offline editing, a desired master tape can be created without erroneously erasing or rewriting important recorded information on the original tape.

However, in the offline editing, an editing operation is performed using an editing tape obtained by copying an original tape. Therefore, when editing data is created, a pre-roll for securing a run-in period of the tape in advance is indispensable. In addition, since it takes time to access a target editing point, there is a problem that it takes an extremely long time to create edited data.

[0004] In order to solve the above-mentioned problem, information on an original tape is temporarily copied to a recordable and randomly accessible disk-like recording medium such as a hard disk. There is a method of creating edit data using copy information on a medium. According to this method, the editing point can be accessed in a short time, so that the time required for the editing operation can be reduced.

[0005] The above-mentioned editing work is generally performed by an editing device called a non-linear editing machine. In such a non-linear editing machine, a video material recorded on a certain editing tape is edited. In many cases, urgent editing of another editing tape is required. In such a case, since the storage capacity of the disc-shaped recording medium of the nonlinear editing device is limited, the contents of the editing tape being edited are temporarily saved (backed up) to another backup tape and disc-shaped recording is performed. It is necessary to secure space on the medium. In some cases, the same video material may be edited by a plurality of different methods, and the editing results may be compared and determined to determine a final edited video. Even in such a case, it is necessary to save a space on the disk-shaped recording medium by saving the edited result to a backup tape every time the editing operation by each method is completed. Furthermore, some of the video materials transferred from the original tape to the disc-shaped recording medium of the non-linear editing device for performing the editing work include materials that are determined to be unnecessary as the editing progresses.
Considering the limited storage capacity of disc-shaped recording media,
It is desirable to backup such unnecessary materials on another tape.

[0006]

The above-mentioned backup is usually performed by using a VTR (Video Tape Recorder). The backup tape, which is a recording medium, stores not only video information and audio information but also the position of each material. Important information such as a time code representing the However, in a recording / reproducing apparatus called a VTR, it was difficult to sufficiently guarantee the quality of the backup process due to a problem in the recording / reproducing mechanism. In an apparatus using a tape-type medium of this kind, continuous clogging caused by clogging of a video head due to magnetic powder, damage to the tape itself, or deterioration in reliability at the head of the tape reel, etc. This is because a serious recording error such as a burst error may occur, and in a backup tape in which such a recording error has occurred, data cannot be recovered by an error correction process performed during reproduction. After the backup is completed, the contents of the disk-shaped recording medium of the editing device are usually erased. Therefore, the backed-up editing result is reloaded into the editing device and returned to the original (immediately before backup) state. There was a problem that could not be done.

[0007] Even if the backup itself is performed without any problem, there is a possibility that a reproduction error will occur when the data is reloaded into the editing device. However, in the related art, such a reproduction error is usually found only after being visually recognized as a flaw in a video during an editing operation continued after reloading. In this case, it is necessary to stop the editing work, reload the data from the backup tape to the editing apparatus again, and visually check the video, which causes a problem that a great amount of time is lost. This is also a problem when the contents of a tape in which the editing contents of a certain video editing device are backed up and recorded are to be loaded into another video editing device.

The present invention has been made in view of the above problems, and a first object of the present invention is to assure the backup quality when the editing state during or after editing is backed up to another recording / reproducing apparatus. And a backup quality assurance method for the same. It is a second object of the present invention to provide a video editing apparatus and a method for assuring the quality of information capture, which can guarantee the quality of information capture when capturing video information or the like from a recording / reproducing apparatus.

[0009]

According to the present invention, there is provided a video editing apparatus comprising: an information storage unit for storing digital information including video information; and at least an information storage unit for backing up an editing state during editing or at the end of editing. Output means capable of sending the digital information stored in the means as it is to the digital information recording / reproducing apparatus, and input means for taking in the digital information which has been sent to the digital information recording / reproducing apparatus by the output means, recorded, reproduced, and returned Extracting means for extracting quality confirmation information for confirming the recording / reproducing quality of digital information in the digital information recording / reproducing apparatus from the digital information captured by the input means; and quality confirmation information extracted by the extracting means. And a determination unit for determining whether to retry the backup based on the Eteiru.

Further, another video editing apparatus according to the present invention comprises:
Input means for receiving digital information reproduced and transmitted from the digital information recording / reproducing apparatus, and reproduction quality confirmation for confirming the reproduction quality of digital information in the digital information recording / reproducing apparatus from the digital information captured by the input means. Extraction means for extracting information, and determination means for determining whether or not to retry fetching digital information from the digital information recording / reproducing apparatus based on the reproduction quality confirmation information extracted by the extraction means. .

According to the method for assuring the backup quality of a video editing apparatus according to the present invention, digital information including video information during editing or at the end of editing is directly sent from the video editing apparatus to the digital information recording / reproducing apparatus. The digital information that has been sent back and recorded, played back and returned, is taken into the video editing device,
From the captured digital information, quality confirmation information for confirming the recording / reproducing quality of the digital information in the digital information recording / reproducing device is extracted, and a backup is retried based on the extracted quality confirmation information. It is determined whether or not it is not.

According to the method for assuring quality of information taken by a video editing apparatus according to the present invention, digital information reproduced and transmitted from a digital information recording / reproducing apparatus is taken into a video editing apparatus, and digital information recording is performed from the taken digital information. Extract playback quality check information for checking the playback quality of digital information in the playback device, and based on the extracted playback quality check information, determine whether to retry importing digital information from the digital information recording / playback device. It is determined whether or not it is not.

In the video editing apparatus according to the present invention, the digital information including the video information of the information storage means is transmitted to the digital information recording / reproducing apparatus as it is, recorded, reproduced, and returned. Quality confirmation information is extracted from the returned digital information, and it is determined whether or not to retry the backup based on the extracted quality confirmation information.

In another video editing apparatus according to the present invention, reproduction quality confirmation information is extracted from digital information reproduced and transmitted from a digital information recording / reproducing apparatus. Then, based on the extracted reproduction quality confirmation information, it is determined whether or not to try again to take in digital information from the digital information recording / reproducing apparatus.

In the backup quality assurance method for a video editing device according to the present invention, digital information including video information is sent from the video editing device to a digital information recording / reproducing device as it is, recorded, reproduced, and then transmitted to the video editing device. Will be returned. Then, quality confirmation information is extracted from the returned digital information, and it is determined whether to retry the backup based on the extracted quality confirmation information.

According to the method of assuring quality of information taken by a video editing apparatus according to the present invention, reproduction quality confirmation information is extracted from digital information reproduced and transmitted from a digital information recording / reproducing apparatus, and the extracted reproduction quality confirmation information is confirmed. Based on the application information, a determination is made as to whether or not to retry fetching digital information from the digital information recording / reproducing device.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[First Embodiment] First, with reference to FIG. 1, the configuration of an entire video processing system including a video editing apparatus according to an embodiment of the present invention will be described. In addition,
The backup quality assurance method and the information capture quality assurance method of the video editing apparatus according to the present invention are embodied by the video editing apparatus of the present invention, and will be described together below. This system includes an editing apparatus 1 for performing non-linear editing on digitized video material and the like, and video data (hereinafter referred to as video data) for a digital video cassette tape (hereinafter referred to as video tape) (not shown). Digital video tape recorder 2 for recording and reproducing video data and the like recorded thereon
(Hereinafter referred to as a digital VTR 2) and the editing device 1
And a digital transmission cable 3 for connecting the digital VTR 2 to the digital VTR 2. In this system, compressed digital data including video data can be directly transmitted between the editing apparatus 1 and the digital VTR 2.

The editing device 1 has input / output devices such as a display device 1a, a keyboard 1b and a mouse 1c, a hard disk device for storing video data and the like, and a main body 1d including various circuits necessary for editing. I have. The digital VTR 2 uses a 6.3 mm (1/4 inch) video tape, for example. Here, the editing device 1 corresponds to the “video editing device” of the present invention, and the digital V
TR2 corresponds to the "digital information recording / reproducing apparatus" in the present invention.

First, the configurations of the editing apparatus 1 and the digital VTR 2 and the structures of various data recorded on the digital video cassette tape by the digital VTR 2 will be described.

FIG. 2 shows a main configuration of the editing apparatus 1 shown in FIG. This editing device 1 has a digital V
A digital input terminal 101 for inputting digital video data from TR2, a digital output terminal 102 for outputting digital video data, and a digital input terminal 101 and a digital output terminal connected between digital output terminal 102 and internal data bus 105. An input / output interface (I / F) 103, a hard disk drive 104 (hereinafter referred to as an HDD 104) for recording digital video data to be edited, and the like, switching of a plurality of video data and various special effects on video. Switcher / digital multi-effector 110 for performing digital signal processing or the like for providing the video data, a video compression unit 111 for compression-encoding video data output from the switcher / digital multi-effector 110, and decoding of video data ( Extension ) Video decompressing unit for inputting processing performed switcher digital multi y Fe Kuta 110
12 are provided. Here, for example, the video compression unit 1
11 performs compression encoding using discrete cosine transform (hereinafter, referred to as DCT), and the video decompression unit 112 performs inverse D
The extension processing is performed by CT.

The editing apparatus 1 further includes an audio mixer 115 for mixing an audio signal and performing digital signal processing for giving various sound effects to voice.
An audio input processing unit 116 that performs predetermined input processing on an audio signal supplied from the audio mixer 115; and an audio output processing unit 117 that performs predetermined output processing on an audio signal supplied to the audio mixer 115. And a data transfer controller 121 connected to the data bus 105.

The digital input / output I / F 103 includes a serial / parallel (S / P) converter 103a connected to the digital input terminal 101, and an S / P converter 103.
a connected between data bus 105 and data bus 105
b, a parallel / serial (P / S) converter 103c connected to the digital output terminal 102, and a gate 103d connected between the P / S converter 103c and the data bus 105. S / P converter 103a
Converts the digital serial data input from the digital input terminal 101 into parallel data, and transmits the parallel data to the data bus 105 via the gate 103b. On the other hand, the P / S converter 103c converts parallel data input from the data bus 105 via the gate 103d into serial data and outputs the serial data from the digital output terminal 102. Here, the digital input / output I / F 103 corresponds to “output means” and “input means” in the present invention.

The HDD 104 stores compressed video data, audio data, and control data such as subcodes. The HDD 104 stores, for example, SCSI (Small Compute) data.
r system Interface) is connected to the data bus 105 via a hard disk (HD) controller 131 and a buffer 132 that support protocols and the like. Here, the HDD 104 is the “information storage unit” in the present invention.
Corresponding to

The output end of the video compression unit 111 is connected to the data bus 105 via a buffer 133. The video decompression unit 112 has a buffer 1
34, 135 connected to the data bus 105.
It is configured to include two video decompression circuits 112a and 112b. However, if necessary, three or more video expansion circuits may be included.

The output end of the audio input processing unit 116 is connected to the data bus 105 via the buffer 136. The audio output processing unit 117 has a data bus 10 via buffers 137 and 138 at each input end.
5, two audio output processing circuits 117
a, 117b. However, if necessary, three or more audio output processing circuits may be included.

The switcher / digital multi-effector 110 includes a video expansion circuit 11 of the video expansion unit 112.
A plurality of video data supplied from 2a and 112b are switched or digital signal processing is performed on these video data to give various video effects, and the resulting video data is supplied to the video compression unit 111. It has become.

The audio mixer 115 includes the audio output circuits 117a and 117 of the audio output processing unit 117.
7b is switched, a plurality of audio data are supplied, digital signal processing is performed on the audio data to give various sound effects, and the resulting audio data is output to the audio input processing unit 116.
To be supplied.

The main controller 120 comprises a CPU (central processing unit) 120a, a ROM (read only memory) 120b, a RAM (random access memory) 120c, and the like. Have been. The CPU 120a
ROM 120b with M120c as working area
By executing the program stored in the editing device 1, the entire control of the editing apparatus 1 is performed. here,
The main controller 120 corresponds to “extraction means” and “judgment means” in the present invention.

The data transfer controller 121 sends a transfer control command onto the data bus 105 in response to an instruction sent from the main controller 120 via the control bus 140. According to the transfer control command, data is exchanged between the buffers 132 to 138 and the gates 103b and 103d connected to the data bus 105 and the data bus 105 at a predetermined timing.

Next, the basic operation of the editing apparatus 1 having such a configuration will be briefly described. Digital input terminal 101
, Compressed serial digital data is input from the digital VTR 2 of FIG. This digital data is converted into parallel data by the S / P converter 103a of the digital input / output I / F 103. This parallel data is data of about 25 Mbps, is sent out onto the data bus 105 via the gate 103b, and is sent to the HDD 132 via the buffer 132 and the HD controller 131.
Written to 104.

When an editing operation is performed, video clip data specified by an instruction from the keyboard 1b, the mouse 1c, or the like is read out of the HDD 104 in a compressed state, and is read via the HD controller 131 and the buffer 132 to the data bus 105. Sent out, eg buffer 1
34. The other specified video clip data is input to, for example, the buffer 135 via the data bus 105. Here, the video clip data refers to data representing a series of continuous images separated by a mark-in point and a mark-out point. The video clip data input to the buffers 134 and 135 are respectively processed by the video decompression circuits 112a and 112b.
Are respectively expanded, and the luminance signal Y, the color difference signals CR, CB
Are input to the switcher / digital multi-effector 110.
In the switcher digital multi-effector 110,
The input data is subjected to necessary editing processing and supplied to the video compression unit 111. Video compression unit 11
1 compresses the input data, and
Over the data bus 105 via the. This data is stored in the buffer 132 and the HD control 131.
Is written to the HDD 104 via the.

When the data stored in the HDD 104 is backed up to the digital VTR 2, the data is stored in the HDD 120 in accordance with an instruction from the CPU 120 a of the main controller 120.
The video clip data is read from the HD 104, the HD controller 131, the buffer 132, the data bus 105
The signal is input to the P / S converter 103c via the gate 103d. The P / S converter 103c converts the parallel data into serial data,
02 is output.

Although not shown in FIG. 2, an analog input terminal for inputting an analog video / audio signal and an analog signal for converting an analog video / audio signal input to the analog input terminal into digital data are provided. A digital / analog (D / A) converter for converting digital data into an analog video / audio signal; and an analog output terminal for outputting an analog signal from the D / A converter. May be provided so that video editing of an analog video tape can also be performed.

FIG. 3 shows the digital VTR 2 shown in FIG.
Of the main part of FIG. This digital VTR2
Is a digital input terminal 201 for inputting digital video data from the editing device 1, a digital output terminal 202 for outputting digital video data, and a digital input terminal 201 and a digital output terminal 202 which are connected to the internal data bus 205. A digital input / output I / F 203 connected thereto, an error correction processing unit 210 connected to the data bus 205 via a buffer 232, and a channel coding unit connected to the error correction processing unit 210.
A decoding unit (CHCD unit) 211 and a video head 212 connected to the CHCD unit 211 are provided.

The digital VTR 2 further has an analog input terminal 220 for inputting analog video and audio signals, an analog output terminal 221 for outputting analog video and audio signals, and an A / A connected to the analog input terminal 220. A D / D converter 223, a video compression unit 224 connected to the output end of the A / D converter 223, and a D / D converter 224 connected to an analog output terminal 221.
An A / A converter 225, a video decompression unit 226 connected to the input end of the D / A converter 225,
Main controller 22 that controls the entire TR2
8 is provided. The video compression unit 224 and the video decompression unit 226 are connected to the data bus 205 via buffers 233 and 244, respectively.

The digital VTR 2 includes a mechanism for loading the video tape 4 and driving a rotary drum on which the video head 26 is mounted, a display for displaying various displays, and a user for performing various operations. An operation unit for performing the operation is also provided. However, these are not shown.

The digital input / output I / F 203 is an S / P converter 203a connected to the digital input terminal 201.
A gate 203b connected between the output end of the S / P converter 203a and the data bus 205; and a P / S converter 203c connected to the digital output terminal 202.
And a gate 203d connected between the output end of the P / S converter 203c and the data bus 205. The S / P converter 203a is connected to the digital input terminal 20
The compressed serial digital data inputted from 1 is converted into parallel data and transmitted to the data bus 205 via the gate 203b. on the other hand,
The P / S converter 203c converts the compressed parallel digital data input from the data bus 205 via the gate 203d into serial digital data and outputs the serial digital data from the digital output terminal 202.

The error correction processing section 210 is connected to the data bus 2
An error correction code is added to the compressed data supplied from the buffer 05 through the buffer 232, and an error correction process is performed on the signal reproduced from the video tape 4. The CHCD unit 211 performs an encoding process suitable for recording on the video tape 4 for the data to which the error correction code has been added by the error correction processing unit 210, and outputs the data to the video head 212. Is performed on the data reproduced from the video tape 4 and output to the error correction processing unit 210. The video head 212 records the signal encoded by the CHCD unit 211 on the video tape 4, reproduces the signal recorded on the video tape 4, and outputs the signal to the CHCD unit 211. The video head 26 includes a recording head and a reproducing head, and can perform recording and reproduction at the same time.

The video compression unit 224 performs, for example, the above-described compression encoding processing by DCT on the video data input from the analog input terminal 220 and converted from analog to digital by the A / D converter 223, and performs buffering. The data is transmitted to the data bus 205 via the 233. On the other hand, the video decompression unit 226 performs decompression processing by inverse DCT on the compressed video data supplied from the data bus 205 via the buffer 234, and
The D / A converter 225 converts the video data expanded by the video expansion unit 226 into an analog signal and outputs the analog signal from an analog output terminal 221. Note that both the signal input from the A / D converter 223 to the video compression unit 224 and the signal input from the video expansion unit 226 to the D / A converter 225 are, for example, a luminance signal Y and a color difference signal CR. And a digital video signal whose color difference signal CB has a sampling ratio of 4: 2: 2.

The main controller 228 includes a CPU, a ROM, a RAM (not shown), and the like.
The control of each of the above-described units is performed via the control unit 9.

Next, a digital VTR having such a configuration will be described.
The second basic operation will be briefly described. At the time of data recording, serial digital data in a compressed state is input to the digital input terminal 201 from the editing apparatus 1 of FIG. This digital data is stored in the digital input / output
The data is converted into parallel data by the / P conversion unit 203a. This parallel data is data of about 25 Mbps and is sent out onto the data bus 205 via the gate 203b. The parallel data is input to the error correction processing unit 210 via the buffer 232 under the control of the main controller 228. This error correction processing unit 2
10 is for the input data of about 25 Mbps,
Error correction codes such as inner codes and outer codes (E
CC) to make the data about 40Mbps, and CHC
The data is input to the D unit 211. The CHCD unit 211 encodes the data from the error correction processing unit 210 into a form suitable for recording on a tape, and supplies the encoded data to the video head 212. As a result, data is recorded on the video tape 4 in a format as shown in FIG.

On the other hand, during data reproduction, the video head 2
The data read from the video tape 4 by the data processing unit 12 is subjected to a decoding process which is the reverse of the above-described coding process by the CHCD unit 211, and is further processed by the error correction processing unit 210.
Error correction processing is performed to obtain data of about 25 Mbps, and the data bus 205
Sent up. This data is stored in the main controller 2
Under the control of 28, the data is input to the P / S converter 203c via the gate 203d, is converted into serial data, and is output from the digital output terminal 202 as serial digital data as compressed.

Recording and reproduction of a video signal with an external analog device are performed as follows. The analog signal input from the analog input terminal 220 is A /
The digital data is converted into digital data of 4: 2: 2 by the D conversion unit 223, and is further converted by the video compression unit 224 to about 25 Mb.
The data is compressed to ps compressed data and sent out onto the data bus 205. This data is input to the error correction processing unit 210 via the buffer 232 under the control of the main controller 228. The following recording operation is the same as in the above case. On the other hand, compressed data of about 25 Mbps reproduced from the video tape 4 and output from the error correction processing unit 210 is sent out onto the data bus 205 via the buffer 232, and further, the buffer 234 is controlled by the main controller 228. The video is input to the video decompression unit 226 via The video decompression unit 226 decompresses the input data, converts it into digital data of 4: 2: 2, further converts it into an analog signal by the D / A conversion unit 225, and outputs it from the analog output terminal 221.

Next, the structure of data recorded on the video tape 4 will be described with reference to FIGS.
Here, a recording format called a DV format is generally adopted. FIG. 4 shows a recording pattern on the video tape 4. On the video tape 4, one frame is composed of 10 tracks. Each track 61 has an audio data section 62, a video data section 63, and a subcode section 64. In the drawing, the arrow indicated by reference numeral 65 indicates the traveling direction of the head, that is, the order of recording and reproducing data.

FIG. 5 shows the video data section 63 in FIG.
Represents the structure of data recorded in the. The video data section 63 includes a 77-byte video data body section, 2-byte sync (synchronization) data SYNC, and a 3-byte ID.
It comprises 135 pieces of 90-byte macroblock information consisting of (identification) data and an 8-byte inner parity code C1. The video data body section stores the video data 72
, Video auxiliary data B1 to B3, and outer parity code C
2 is included. The video data 72 is composed of 135 compressed macroblocks of 77 bytes. The 135 compressed macroblocks are divided into five superblocks SB (not shown) each consisting of 27 compressed macroblocks. The 3-byte ID data includes application ID 0, which determines the structure of the video data area,
ID1 representing the SYNC number in the track, and ID0
And a parity IDP corresponding to D1.

FIG. 6 shows the structure of the above-described compressed macroblock. This compressed macroblock is created by compressing a predetermined range of pixels (for example, 8 × 8 dots) called a macroblock on the screen, and has a size of 1 × 77 bytes as shown. As will be described later, the upper 4 bits of the first byte (the fifth byte in the entire video data section 63) are information STA relating to error processing during reproduction of the compressed macroblock (hereinafter referred to as error information STA).
That. ). The lower 4 bits of the first byte are 16 quantization table numbers 0 to 15 used for compression.
Represents any of the following. In the area subsequent to the first byte, 1 × 14 bytes of compressed luminance data Y0 to Y3 are arranged, followed by 1 × 10 bytes of compressed (RY) color difference data. Data CR and (BY) color difference data CB are arranged. Each of compressed luminance data Y0 to Y3 and color difference data C
DC component data DC0 is provided at the head of each of R and CB.
To DC5 are arranged, and the AC component data A
C are respectively arranged. The AC component data AC is arranged in order from the data of the low frequency component. Here, the error information STA is “quality confirmation information” in the present invention,
This corresponds to “reproduction quality confirmation information” and “flag information”.

FIG. 7 is for explaining the significance of the error information STA in the compressed macroblock shown in FIG. The error information STA indicates whether or not an uncorrectable error has occurred when data is reproduced from the video tape in the digital VTR 2, and when the uncorrectable error occurs, the error is interpolated. Is information indicating whether or not the data interpolation has been performed, and if the data interpolation has been performed, in what manner. In this figure, each bit (s3, s2, s1, s0) of the error information STA is "0, 0, 0,
A value of "0" indicates that no error has occurred in the compressed macroblock, or that an error has occurred but has been normally corrected by the error correction process and no data interpolation has been performed. Bit (s3,
If (s2, s1, s0) is "1, 1, 1, 1", there is an unrecoverable error in the compressed macroblock,
This shows the case where the error cannot be specified. Error information S
Each bit (s3, s2, s1, s0) of TA is "0,
In the case of "1, 1, 1", it indicates that the error code has been inserted into this compressed macroblock. In other cases, the error that occurred has not been restored by the error correction processing, but will be described below. This indicates that the data has been corrected by predetermined data interpolation.

Of the codes A to C described in the column of "Data interpolation type" in this figure, the code A replaces the compressed macroblock in which an error has occurred with the compressed macroblock of the same number in the immediately preceding frame. The code B indicates that the compressed macroblock in which the error has occurred has been replaced by the compressed macroblock of the same number in the frame immediately thereafter, and the code C indicates that the compressed macroblock in which the error has occurred is subjected to data interpolation. It indicates that the interpolation method cannot be specified. Further, among the codes a and b described in the column of “continuity type”, the code a is a compression such that s0 = 0 and s3 = 0 among other compressed macroblocks in the same video segment. The sign b indicates that the continuity of the data processing sequence with the macroblock is guaranteed, and the symbol b indicates that the continuity of the data processing sequence with another compressed macroblock is not guaranteed.

In this embodiment, all bits of the error information STA are all "0" for all the compressed macroblocks, that is, when no error has occurred or an error has occurred but has been corrected by the error correction processing. Only in this case, it is determined that the backup has been completed normally, and otherwise, it is determined that the backup is abnormal, and the backup is performed again.

Next, with reference to FIGS. 8 and 9, main operations of the video processing system having the above-described configuration will be described.

First, with reference to FIG. 8, the operation in the case where the editing operation by the editing apparatus 1 is stopped in the middle of the editing operation and the editing state at that time is backed up in the digital VTR 2 will be described. FIG. 8 shows the operation of the editing apparatus 1 at the time of backup. Here, it is assumed that a plurality of video clips are stored in the HDD 104 when the editing operation is stopped.

After the editing operation is stopped, the digital VT
When a backup video tape 4 is loaded in R2 and a backup command displayed on the display device 1a is clicked by the mouse 1c (FIG. 1) or the like, a backup operation from the editing device 1 to the digital VTR 2 starts, and Of video clip data is sequentially transmitted to the digital VTR 2 via the digital transmission cable 3.
Is forwarded to When the transfer of all video clip data is completed (step S101), the digital V
The TR 2 reproduces the backed-up data and returns it to the editing device 1 via the digital transmission cable 3 again.
At this time, the CHCD unit 211 of the digital VTR 2
A value as shown in FIG. 7 is set to the error information STA of each reproduced compressed macroblock in accordance with the occurrence of the error and the processing status thereof.

The main controller 120 of the editing device 1
Sequentially reads the error information STA of each compressed macroblock from the data sent from the digital VTR 2, and checks the value (step S102).
At this time, the data sent from the digital VTR 2 is not written into the HDD 104, and only the compressed macro block is taken in by the main controller 120. As a result, when the error information STA of all the compressed macroblocks is “0, 0, 0, 0” (step S103; Y), it is determined that the backup has been performed normally (step S104). Then, the backup processing ends.

On the other hand, if the error information STA is “0, 0, 0,
If there is at least one compressed macroblock having a value other than "0" (step S103; N), it is determined that the backup has not been performed normally, and the number of backup retries (retry) is counted. The content of a retry counter (not shown) is incremented (step S105), which is included in the CPU 120a of the main controller 120.
It is assumed that it has been reset at the start of backup. If the retry counter does not exceed the predetermined reference retry number (for example, “3”) (step S106;
N), the process returns to step S101, and the backup is performed again from the beginning. Then, the error information STA of the compressed macroblock is checked in the same manner as described above. Hereinafter, this operation is repeated.

When the retry counter exceeds a predetermined reference retry number (step S106; Y), the main controller 120 determines that backup is not possible and outputs an alarm notifying a backup abnormality (step S106).
107). The alarm output is, for example, the display device 1
This is performed by displaying on a.

Thus, at the time of backup,
Only when all bits of the error information STA of all the compressed macroblocks of the backed-up video clip data are “0”, the backup is made normal. At other times, the backup operation is further repeated. If the backup is not performed normally even after repeating the predetermined number of times, an alarm is displayed. In this case, the user may replace the video tape 4 set in the digital VTR 2 or perform a procedure such as cleaning the video head 212 and perform the backup operation again.

Next, referring to FIG. 9, the contents backed up from the editing device 1 to the digital VTR 2
Will be described below, and the editing apparatus 1 is returned to the original (before backup) editing state. FIG. 9 shows an operation of the editing apparatus 1 at the time of reloading.

As described above, the video tape 4 on which the intermediate state of the editing operation is backed up is recorded on the digital VTR.
2 and a reload command (not shown) displayed on the display device 1a by the mouse 1c (FIG. 1) of the editing device 1 or the like, the digital VTR 2
, The reloading operation to the editing apparatus 1 starts, and the video data reproduced by the digital VTR 2 is transferred to the editing apparatus 1 via the digital transmission cable 3 for each clip.

The main controller 120 of the editing device 1
Stores the transferred video clip data in the HDD 10
4 (step S201), all the compressed macroblocks constituting the video clip data are fetched, and the value of each error information STA is checked (step S202). As a result, the error information STA of all the compressed macroblocks is "0, 0, 0,
If it is "0" (step S202; Y), it is determined that the capture of the video clip data is normal, and the process returns to step S201 to capture the next video clip data transferred from the digital VTR 2. , For all video clip data,
If the value of each bit of the error information STA of the compressed macroblock is “0” (step S203),
It is determined that reloading has been completed normally (step S2).
04), the state of the editing apparatus 1 is returned to the original (before backup) state based on the data reloaded into the HDD 104 (step S205).

On the other hand, if the error information STA is “0, 0, 0,
If there is at least one compressed macroblock having a value other than "0" (step S202; N), it is determined that the video clip data has not been normally captured, and the number of times of retry of capturing is determined. The content of a retry counter (not shown) for counting is incremented (step S206), and it is assumed that the retry counter has been reset at the start of the reloading process. If it does not exceed “3”, for example (step S207;
N), a video data clip including the compressed macroblock in which the error occurred is fetched again (step S20).
9) Returning to step S202 again, the error information STA of the compressed macroblock is checked. Hereinafter, this operation is repeated.

When the retry counter exceeds a predetermined reference retry number (step S207; Y), the main controller 120 determines that reloading is not possible, and outputs an alarm notifying reload abnormality (step S20).
8).

As described above, at the time of reloading, the capture is normal only when all the bits of the error information STA for all the compressed macroblocks of the captured clip data are “0”. At other times, the video clip data in which the error has occurred is fetched again. In addition, if the same video clip data is not normally captured even if the same video clip data is captured a predetermined number of times, an alarm is displayed. In this case, the user
What is necessary is just to perform a process such as cleaning the video head 212 and perform the reloading operation.

As described above, according to the video editing apparatus of this embodiment, the error information STA of the compressed macroblock originally defined in the DV format is used as the quality confirmation information at the time of backup, and Immediately after that, the error information STA is checked by re-reading, so that it can be confirmed whether or not the backup has been performed normally. When backup is not performed normally, retry is performed, and when the number of retries exceeds a predetermined number, an alarm is output, so that the quality of the backup process can be guaranteed with considerable accuracy. Becomes The error information S
Since the TA is also used as quality confirmation information at the time of reloading and the error information STA is checked at the time of reloading, it is possible to confirm whether the reloading has been performed normally. When reloading is not performed normally, retry is performed and an alarm is output when the number of retries exceeds a predetermined number, so that the quality of the reloading process is also guaranteed with considerable accuracy. It becomes possible.

[Second Embodiment] Next, a second embodiment of the present invention will be described.
An embodiment will be described. This embodiment is applicable to a video tape recording format that does not include the error information STA as the quality confirmation information used in the first embodiment, and can be applied to any type of recording format. It can respond. In order to make this possible, in the present embodiment, at the time of backup, predetermined video pattern data is transferred to the digital VTR 2 together with the original video data to be backed up as check pattern information as quality confirmation information in advance. They are recorded on tape.

FIG. 10 shows a main configuration of an editing apparatus 1 'according to a second embodiment of the present invention. In this figure, the editing device 1 shown in the first embodiment (FIG. 1)
The same elements as those described above are denoted by the same reference numerals, and description thereof will be appropriately omitted. In the editing apparatus 1 'according to the present embodiment, the main controller 120' includes a CPU 120a, a RAM 1
20b, ROM 120c, and a non-volatile memory such as an E ² PROM (an electrically erasable and rewritable RO).
M) 120d. This E ² PROM 120d
Stores video pattern data as shown in FIG. 11 and FIG.
The data is read out as needed by 20a. Other configurations are the same as those in the first embodiment (FIG. 1). Here, the video pattern data stored in the E ² PROM 120d corresponds to “quality confirmation information” and “reproduction quality confirmation information” in the present invention.

FIG. 11 shows a test pattern called a monochrome scope pattern (commonly called monosco), which is used for checking the luminance resolution. The monochrome scope pattern 75 is configured as a predetermined pattern in which circles, straight lines, and the like are arranged by black lines on a white background. FIG. 12 shows a test pattern called a color bar pattern, which is used for color difference check. The color bar pattern 76 is configured by arranging a large number of color bars such that the color density increases in the direction of arrow X in the figure.

Next, the operation of the video processing system having the above configuration will be described with reference to FIGS.

First, with reference to FIG. 13, the operation in the case where the editing operation by the editing apparatus 1 'is interrupted and the editing state at that time is backed up in the digital VTR 2 will be described. FIG. 13 shows the operation of the editing apparatus 1 'at the time of backup. Here, the first
As in the case of the embodiment (FIG. 8), it is assumed that a plurality of video clips are stored in the HDD 104 when the editing operation is stopped.

After the editing operation is stopped, the digital VT
When a backup video tape 4 is loaded in R2 and a backup command displayed on the display device 1a is clicked with the mouse 1c (FIG. 1) or the like, a backup operation from the editing device 1 'to the digital VTR 2 starts. First, the main controller 120 'of the editing apparatus 1' reads out the video pattern data (FIGS. 11 and 12) stored in the E ² PROM 120d and transfers it to the digital VTR 2 via the digital transmission cable 3 (step S301). Then, the glass substrate was transferred to the digital VTR2 via digital transmission cable 3 reads the video data of the first clip portion of the HDD 104 (step S302), further, E ² PROM120d
The video pattern data stored in the digital VTR 2
(Step S303). Hereinafter, the HDD 104
Each time the above one video clip data is transmitted, E ²
The process of transmitting the video pattern data of the PROM 120d is repeated (steps S302 and S303).

After the transfer of all the bit clip data is completed in this way, the recording state of the video tape 4 of the digital VTR 2 is as shown in FIG. 14, for example. In this figure, the symbol Y indicates the tape running direction. As shown in this figure, the data of the monochrome scope pattern 75 and the data of the color bar pattern 76 are recorded in a portion near the beginning of the video tape 4, and the video clip data Di (i = 1 to n; Is an integer), the monochrome scope pattern 75 and the color bar pattern 7
6 pairs of data are recorded alternately. However, the monochrome scope pattern 75 and the color bar pattern 76 may be recorded every other one.

After the transfer of all video clip data is completed (step S304), the digital V
The TR 2 reproduces the backed up data and returns it to the editing device 1 ′ via the digital transmission cable 3 again. The main controller 120 'of the editing apparatus 1' converts all the data sent from the digital VTR 2 into HD.
At the same time, it is loaded into D104 and video pattern data is extracted therefrom (step S305). The main controller 120 'converts the extracted video pattern data into E
² Compare with the video pattern data, which is the original data in the PROM 120d, in bit units (step S30).
6). As a result, when all the video pattern data match in bit units (step S307;
Y), it is determined that the backup has been performed normally (step S308), and the backup processing ends.

On the other hand, if there is at least one bit-based mismatch (step S307; N), it is determined that the backup was not performed normally, and a retry for counting the number of backup retries is performed. The content of a counter (not shown) is incremented (step S309). It is assumed that the retry counter has been reset at the start of backup. If the retry counter does not exceed the predetermined reference retry number (for example, “3”) (step S310; N), the process proceeds to step S310.
Returning to 301, the backup is performed again from the beginning, and the backup contents are confirmed. That is, in the same manner as described above, after the video pattern data 75 and 76 and each bit clip data are alternately transferred,
This is reproduced and returned in TR2 to extract and compare video pattern data. Hereinafter, this operation is repeated.

If the retry counter exceeds a predetermined reference retry number (step S310; Y), the main controller 120 determines that the backup is abnormal, and outputs an alarm to notify it (step S311).

Thus, at the time of backup,
The video pattern data transferred and recorded together with the video clip data to the digital VTR 2 and then reproduced and returned is compared with the original video pattern data. Is done. At other times, the backup operation is further repeated. If the backup is not completed normally even if the backup is repeated a predetermined number of times, an alarm display notifying the backup abnormality is displayed. In this case, the user replaces the video tape 4 set in the digital VTR 2 or
12 may be performed, and the backup operation may be performed again.

Next, referring to FIG. 15, the operation for reloading the contents backed up from the editing device 1 'to the digital VTR 2 to the editing device 1' and returning the editing device 1 'to the original editing state. Will be described. FIG. 15 shows the operation of the editing apparatus 1 'at the time of reloading.

A backup videotape in which the state of the editing operation is backed up as described above is loaded into the digital VTR 2, and the mouse 1c of the editing apparatus 1 'is loaded.
When a reload command (not shown) displayed on the display device 1a is clicked (FIG. 1) or the like, a reload operation from the digital VTR 2 to the editing device 1 'is started, and a video clip reproduced by the digital VTR 2 is started. The data is transferred to the editing device 1 'via the digital transmission cable 3.

The main controller 12 of the editing device 1 '
0 'indicates that all the transferred data is stored in the HDD 104.
After writing to the HDD 104 (step S401).
, The image pattern data is read out one set at a time, and is compared bit by bit with the image pattern data as the original data in the E ² PROM 120d (step S).
402). As a result, when all the video pattern data match in bit units (step S403;
Y, S404; Y), it is determined that reloading has been performed normally (step S405), and the state of the editing apparatus 1 'is returned to the original state based on the data reloaded into the HDD 104 (step S406). ), End the backup process.

On the other hand, if at least one bit unit mismatch exists (step S403; N), it is determined that reloading has not been performed normally, and the number of reload retries is counted. Of the retry counter (not shown) is incremented (step S40).
7). If the retry counter does not exceed the predetermined reference retry number (step S408; N), step S408
Returning to step 401, reloading is performed again from the beginning, and the reloaded content is confirmed in the same manner as described above. Hereinafter, this operation is repeated.

When the retry counter exceeds a predetermined reference retry number (step S408; Y), the main controller 120 'determines that reloading is abnormal, and outputs an alarm notifying it (step S409).

As described above, at the time of reloading, the video pattern data reproduced and transferred from the digital VTR 2 together with the video clip data is compared with the original video pattern data. Is considered normal. Otherwise,
Further, the reload operation is repeated. If the reloading is not completed normally even if the reloading is repeated a predetermined number of times, an alarm is displayed. In this case, the user may take measures such as cleaning the video head 212 and perform the backup operation again.

As described above, according to the present embodiment, predetermined video pattern data is used as quality confirmation information at the time of backup, and this video pattern data is transmitted in advance together with the digital data to be backed up at the time of backup. Since the video pattern data is recorded on the video tape by the VTR 2 and this video pattern data is read into the editing apparatus 1 'by re-reading after the backup and checked, it is possible to confirm whether or not the backup has been normally performed. it can. And the first
As in the case of the embodiment, when the backup is not normally performed, a retry is performed, and when the number of retries exceeds a predetermined number, an alarm is output, so that the quality of the backup process is guaranteed. It is possible to do. Further, since the above-mentioned video pattern data is also used as quality confirmation information at the time of reloading and is checked at the time of reloading, it can be confirmed whether or not reloading has been performed normally. When reloading is not performed normally, retry is performed and an alarm is output when the number of retries exceeds a predetermined number, so that the quality of the reloading process can be guaranteed. Become.

Particularly, in this embodiment, since special information (error information STA) used in the first embodiment is not used, quality assurance with more versatility can be achieved. That is, the present invention is not limited to a system having a specific recording format, but can be applied to a system of any format.

As described above, the present invention has been described with reference to some embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made. For example, in the first embodiment, the DV format has been described as an example.
The error information STA is used as the quality confirmation information. However, in a system using another format, if similar information regarding an error is used, it may be used.

In the first embodiment, as shown in FIG. 8, at the time of backup, after transferring all video clip data and recording it on the digital VTR 2, the error information STA is checked by re-reading. However, the present invention is not limited to this. For each video clip data transfer, rereading is performed to check the error information STA, or for every video clip data transfer, rereading is performed. In this case, the error information STA may be checked. Further, the check may be performed for each other data transfer unit. Further, in the first embodiment, as shown in FIG.
Error information S every time fetching of 2 to 1 clip data
TA was checked, but not limited to this.
The check may be performed every time some clip data is captured, or may be checked after capturing all clips. Similarly, also in the second embodiment, it is possible to appropriately change the data check timing at the time of backup or reload.

In the second embodiment, two image pattern data, that is, a monochrome scope pattern and a color bar pattern, are used as the quality confirmation information. However, other image patterns may be used. Good. Furthermore, not limited to the video pattern, any digital data pattern may be used.
In addition, the video pattern data is stored in the E ² PROM 120d.
04 or another storage device (floppy disk, magneto-optical disk, etc.).

[0087]

As described above, according to the video editing apparatus of the first, third, fourth or sixth aspect, the digital information including the video information of the information storage means is recorded as it is. After being transmitted to the recording device for recording, the data is reproduced and returned.At the same time, quality confirmation information is extracted from the returned digital information, and a backup is retried based on the extracted quality confirmation information. Since the determination is made, the quality of the backup process from the video editing device to the digital information recording / reproducing device can be guaranteed.

Further, claim 2, claim 5, or claim 7
According to the video editing apparatus described in (1), information for reproducing quality confirmation is extracted from the digital information reproduced and transmitted from the digital information recording / reproducing apparatus, and digital information recording / reproducing is performed based on the extracted information for reproducing quality confirmation. Since it is determined whether or not to try again to take in digital information from the device, it is possible to guarantee the quality of taking in digital information from the digital information recording / reproducing device to the video editing device.

In particular, according to the video editing apparatus of the present invention, the quality check information is checked at the time of backup, and the quality check information is also restored at the time of performing the process of returning to the editing state before the backup after the backup. Since the information is checked, the quality can be guaranteed both at the time of backup and at the time of restoration.

According to the video editing apparatus of the fourth or fifth aspect, the information relating to the reproduction error processing added to the reproduced digital information at the time of reproduction by the digital information recording / reproducing apparatus. Since the information is used as quality confirmation information, there is no need to prepare special data as quality confirmation information and record it at the time of backup. Further, the amount of data to be recorded on the digital information recording / reproducing apparatus at the time of backup is not increased.

According to the video editing apparatus of the present invention, the predetermined check pattern information previously sent to and recorded in the digital information recording / reproducing apparatus is used as the quality confirmation information. Therefore, the present invention can be applied irrespective of the recording format in the digital information recording / reproducing apparatus, and has an effect of being versatile.

According to the backup quality assurance method for a video editing apparatus according to claim 8, 10, or 12, digital information including video information is directly sent to a digital information recording / reproducing apparatus for recording. After a while
Playback and return are performed, and quality confirmation information is extracted from the returned digital information. Based on the extracted quality confirmation information, it is determined whether or not to retry a backup. The quality of the backup process from the editing device to the digital information recording / reproducing device can be guaranteed.

According to the information capture quality assurance method of the video editing apparatus according to the ninth, eleventh, or thirteenth aspect, the reproduction quality is determined from the digital information reproduced and transmitted from the digital information recording / reproduction apparatus. The information for confirmation is extracted, and it is determined whether or not to retry fetching the digital information from the digital information recording / reproducing apparatus based on the extracted information for confirming the reproduction quality. And the quality of taking digital information into the video editing apparatus can be guaranteed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an entire video processing system including a video editing device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a main configuration of the editing device illustrated in FIG.

FIG. 3 is a block diagram illustrating a main configuration of the digital VTR illustrated in FIG.

FIG. 4 is an explanatory diagram showing a recording pattern on a video tape.

FIG. 5 is an explanatory diagram showing a data structure of a video data part in FIG.

FIG. 6 is an explanatory diagram illustrating a structure of a compressed macroblock.

FIG. 7 is a diagram for explaining the significance of error information STA in the compressed macro block shown in FIG.

FIG. 8 is a flowchart showing an operation of the editing apparatus shown in FIG. 2 at the time of backup.

FIG. 9 is a flowchart showing an operation of the editing apparatus shown in FIG. 2 at the time of reloading.

FIG. 10 is a block diagram illustrating a main configuration of an editing device as a video editing device according to a second embodiment of the present invention.

11 is a diagram showing a video pattern stored in the editing device shown in FIG.

FIG. 12 is a diagram showing another video pattern stored in the editing device shown in FIG.

FIG. 13 is a flowchart showing an operation of the editing apparatus shown in FIG. 10 at the time of backup.

FIG. 14 is a diagram illustrating a recording state on a video tape after backup.

FIG. 15 is a flowchart showing an operation of the editing apparatus shown in FIG. 10 at the time of reloading.

[Explanation of symbols]

1, 1 'editing device, 2 digital VTR, 3 digital transmission cable, 4 video tape, 101 digital input terminal, 102 digital output terminal, 103
... Digital input / output I / F, 104 ... HDD, 120,
120 ': Main controller, 120a: CPU, 1
20d: E ² PROM, 201: digital input terminal,
202: Digital output terminal, 203: Digital input / output I / F, 228: Main controller

Claims (13)

[Claims] 1. A video editing device connected to a digital information recording / reproducing device capable of recording and reproducing digital information including video information, and capable of editing video material, storing digital information including video information. Information storage means; output means capable of transmitting at least digital information stored in the information storage means to the digital information recording / reproducing apparatus as it is for backup of the editing state during editing or at the end of editing; Input means for receiving digital information which is sent to the digital information recording / reproducing apparatus and recorded and reproduced and returned, and from the digital information captured by the input means,
Extracting means for extracting quality confirmation information for confirming the recording / reproducing quality of digital information in the digital information recording / reproducing apparatus; and determining whether to retry backup based on the quality confirmation information extracted by the extracting means. A video editing apparatus comprising: a determination unit configured to determine whether the video editing is performed. 2. A video editing device connected to a digital information recording / reproducing device capable of recording and reproducing digital information including video information and capable of editing video materials, wherein the video information is reproduced from the digital information recording / reproducing device. Input means for capturing the sent digital information, and digital information captured by the input means,
Extracting means for extracting reproduction quality confirmation information for confirming the reproduction quality of digital information in the digital information recording / reproducing apparatus; based on the reproduction quality confirmation information extracted by the extracting means, the digital information recording / reproducing apparatus A video editing apparatus, comprising: a determination unit configured to determine whether to fetch digital information from a computer again. 3. The input means further takes in digital information reproduced and sent from the digital information recording / reproducing apparatus for returning to an editing state before backup, and the extracting means further comprises: Extracting the quality confirmation information from the digital information taken in by the input means for returning to the editing state, wherein the determination means further performs a backup based on the quality confirmation information extracted by the extraction means. 2. The video editing apparatus according to claim 1, wherein it is determined whether or not to retry fetching digital information from the digital information recording / reproducing apparatus for returning to the previous editing state. 4. The reproduction apparatus according to claim 1, wherein the quality confirmation information is information relating to reproduction error processing added to the reproduced digital information when the digital information recording / reproduction apparatus reproduces the information. Video editing equipment. 5. The reproduction quality confirmation information is information relating to reproduction error processing added to the reproduced digital information at the time of reproduction in the digital information recording / reproduction device. The video editing device as described. 6. The quality confirmation information is sent to the digital information recording / reproducing apparatus together with the digital information of the information storage means by the output means in advance at the time of backup of the editing state during the editing or at the end of the editing. 2. The video editing apparatus according to claim 1, wherein the information is predetermined check pattern information recorded. 7. The video editing apparatus according to claim 2, wherein the reproduction quality confirmation information is predetermined check pattern information which has been sent to the digital information recording / reproduction apparatus and recorded in advance. 8. A method for backing up an editing state during editing or at the end of editing in a video editing apparatus capable of editing video material to a digital information recording / reproducing apparatus capable of recording and reproducing digital information including video information. A method for assuring backup quality, wherein digital information including video information during editing or at the end of editing is directly transmitted from the video editing device to the digital information recording / reproducing device, and is transmitted to the digital information recording / reproducing device. The digital information recorded, recorded, reproduced, and returned is taken into the video editing apparatus, and from the taken digital information, a quality check for confirming the recording / reproduction quality of the digital information in the digital information recording / reproducing apparatus is performed. Information, and based on the extracted quality confirmation information, Backup quality assurance method for the video editing apparatus and judging whether or not to retry the backup. 9. A method for assuring the quality of capturing digital information from a digital information recording / reproducing device capable of recording and reproducing digital information including video information to a video editing device capable of editing video material. Wherein the digital information reproduced and transmitted from the digital information recording / reproducing device is taken into the video editing device, and the reproduction quality of the digital information in the digital information recording / reproducing device is confirmed from the taken digital information. And extracting, based on the extracted reproduction quality confirmation information, whether to retry retrieving digital information from the digital information recording / reproducing apparatus. Quality assurance method for information capture of video editing equipment. 10. The information for reproduction error processing, wherein the quality confirmation information is information added to the reproduced digital information at the time of reproduction in the digital information recording / reproducing apparatus. Backup quality assurance method for video editing equipment. 11. The reproduction quality confirmation information is information relating to reproduction error processing added to the reproduced digital information at the time of reproduction in the digital information recording / reproduction device. The quality assurance method of the information capture of the video editing device described. 12. The quality confirmation information is sent together with the digital information from the video editing device to the digital information recording / reproducing device during the editing of the video editing device or at the time of backup of the editing state at the end of editing. 9. The backup quality assurance method for a video editing apparatus according to claim 8, wherein the predetermined pattern information is recorded. 13. The video editing apparatus according to claim 9, wherein said reproduction quality confirmation information is predetermined check pattern information which has been sent to said digital information recording / reproduction apparatus and recorded in advance. Information capture quality assurance method.