JPH1146336A - Editing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an editing device by which a clip image is simply generated. SOLUTION: This editing device is provided with a tape editing device 4 that records/reproduces input video data, based on a format with data denoting start and end of recording of video data for each frame and with a disk editing device 5, that detects the data denoting start and end of recording of video data and generates clip data with image information, in the case of applying recording/reproducing the video data supplied from the tape editing device 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an editing apparatus suitable for an editing system for a material requiring quickness such as a sports broadcast or news report.

[0002]

2. Description of the Related Art A conventional editing apparatus is, for example, configured so that a first editing apparatus and a second editing apparatus are completely duplicated, and a video output is switched by a switcher. The first editing device has a VTR section and an editor section. In addition, the second editing device similarly outputs V
It has a TR section and an editor section. The VTR unit has a recording unit that records video data on a cassette tape and a playback unit that plays back the recorded video data. The editor exchanges control signals between the first editing device and the second editing device to control the editing operation. The switcher switches between a first video output or a second video output from the first editing device or the second editing device.

[0003] Such an editing device operates as follows. The video data reproduced by the reproducing unit in the first editing device is supplied to the second editing device. In the second editing device, an in-point and an out-point of an image are determined based on a control signal indicating a connection point from an editor, and a clip image is created and edited.

[0004]

However, in the conventional editing apparatus, since the clip image is manually created, there is an inconvenience that the time required for creating the clip is long. In addition, the photographer notes the in-point and the out-point of the scene recorded on the cassette tape on the spot at the time of shooting, and the editor later uses the second editing device to write
Determine the In and Out points based on the notes and
L (Edit Decision List) is created, but when a home VTR is used, there is a disadvantage that these editing operations cannot be performed.

[0005] In addition, the in-point and out-point of the TC (time code) of each cut photographed by a camera with a camera-integrated VTR are stored in a memory built in a cassette, and the first image of each cut is taken on a tape. At the end, there is a method called a clip link in which one divided composite screen is created and a clip is created using this divided composite screen. But,
In this method, the storage capacity of the memory is 32 Kbytes and 1
Since the creation of 98 clips is the limit, and the time code can only be displayed in units of seconds due to the limitation of the memory capacity of the memory, it is necessary to adjust again when an accurate joint is required, and Such a function cannot be performed with a cassette that does not have a built-in memory.
Camera-integrated VTR without clip link function
However, such a function cannot be performed.

An object of the present invention is to provide an editing apparatus capable of easily creating a clip image in consideration of such points.

[0007]

An editing apparatus according to the present invention comprises:
A sub-editing unit that records and reproduces input video data based on a format having data indicating the start and end of recording of video data for each frame, and a recording and reproduction of video data supplied from the sub-editing unit A main editing unit that detects data indicating the start and end of recording of the video data and creates clip data having image information based on the data.

According to such an editing apparatus, the following operations are performed. Video data in a format having data indicating the start and end of recording of video data for each frame is supplied to the sub-editing unit. The reproduction system of the sub-editing unit reproduces the video data. The played video data is
It is supplied to the main editing unit via a predetermined interface. At this time, since this interface has a recording signal similar to a recording signal having a format indicating data indicating the start and end of recording of video data for each frame, recording is performed according to the format supplied to the sub-editing section. The edited video data can be directly supplied to the main editing unit.

In the main editing unit, data indicating the start and end of recording of video data is detected for each frame of this format, so that the recording of the first frame of each scene of video data is performed. The start and the end are detected, and the image of the first frame of the scene is automatically stored as a clip image in the main editing unit. Then, using this clip, the operation of the non-linear editing in the main editing unit is controlled. The video data supplied from the sub-editing section is supplied to the rotary recording medium in the main editing section and stored in the rotary recording medium.

In the main editing section, an editing point such as an in point (editing start point) or an out point (editing end point) is set for video data stored in the rotary recording medium by using the automatically generated clip image. Can be specified. In the main editing unit, a control command for performing editing is generated,
The generated control command is transmitted to the rotary recording medium as a control command, and the reproduction control of the rotary recording medium is performed. The reproduced video data is sent out.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. The editing apparatus according to the present embodiment automatically generates clips used in non-linear editing using a hard disk drive based on the recording tape format of a camera-integrated VTR.

FIG. 1 shows a schematic configuration of an editing system according to the present embodiment. In FIG. 1, an editing system according to the present embodiment includes a camera-integrated VTR 2 for photographing each scene 1 and recording video data on a cassette tape 3 in a unique recording tape format, and a video data recorded on the cassette tape 3. Editing device 4 for playing back and editing
, A tape editing device 4 and a digital interface 6
And a disk editing device 5 that performs non-linear editing using a hard disk drive unit that can randomly access video data. When this editing system is viewed as an editing device, the tape editing device 4 constitutes a sub-editing unit, and the disk editing device 5 constitutes a main editing unit. Here, the system refers to a plurality of logically assembled ones, and it does not matter whether the devices of each configuration are in the same housing.

Here, the disk editing device 5 has a hard disk array that can be accessed randomly. The hard disk array has a plurality of hard disks connected in an array. The hard disk array is apparently controlled so that recording and reproduction are performed simultaneously. That is, the real-time video signal can be reproduced from the hard disk while recording the input real-time video signal. The disk editing device 5 has a computer. An application program for editing video data sent to the computer is installed in the computer. The application program installed in the computer is a program that can operate based on the operating system of the computer. This application program is a GUI for generating control commands.
(Graphical user interface).

The computer and the hard disk array
They are connected by a communication cable based on a predetermined communication format. The communication format of this interface is to transmit video signals and control commands simultaneously /
Although it is a communication format that can be received, SCSI (Smal
l Computer System Interface) The connection may be made by a communication cable based on the communication format of the interface. The communication format of the SCSI interface is that a video signal and a control command are time-division multiplexed and transmitted.
/ Communication format that can be received.

The computer and its peripheral circuits are
They are connected by a communication cable based on the communication format of the RS-422 interface. RS-4
The communication format of the 22 interface is a communication format that can simultaneously transmit / receive a video signal and a control command.

The video input signal input to the disk editing device 5 includes a component video signal photographed by the camera-integrated VTR 2 and a VT of the tape editing device 4.
This is a component video signal transmitted from R. This component video signal is an extended format of the SDI (Serial Digital Interface) format, and is a signal transmitted according to the digital interface 6 similar to the tape recording signal of the camera-integrated VTR 2 format. On the other hand, the video output signal output from the disk editing device 5 is also a component video signal transmitted according to the format signal of the digital interface 6. Of course, the video signal input / output to / from the editing device 5 may be a composite video signal.

An outline operation of the editing apparatus of the present embodiment thus configured will be described. In FIG. 1, a scene 1 captured by a camera-integrated VTR 2 is recorded on a cassette tape 3 as a component video signal in a format described later. At this time, in FIG. 1, the commercial camera integrated VTR and the home camera integrated VT
R uses a cassette tape with a built-in memory, and other camera-integrated VTRs use a cassette tape without a memory. Also, no matter which camera-integrated VTR 2 is used, it is recorded on the cassette tape 3 in the same format.

In this case, the cassette tape 3 with a built-in memory
Saves the first image of each cut shot by the camera with the camera-integrated VTR2 in the built-in VTR memory as described above, and creates a single divided composite screen at the end of tape recording. Then, the divided composite screen is used to create a clip.

In this manner, the video data recorded in the format described later on the cassette tape 3 is loaded into the tape editing device 4 and supplied to the VTR playback system of the tape editing device 4. The playback system of the VTR of the tape editing device 4 plays back video data recorded on the cassette tape 3. The reproduced video data is supplied to the disk editing device 5 via the digital interface 6.
At this time, since the digital interface 6 is a digital interface 6 having a recording signal similar to the tape recording signal in the format of the camera-integrated VTR 2, the video data recorded in the format of the camera-integrated VTR 2 is directly transmitted to the disk editing device 5. Can be supplied.

When the disc editing device 5 detects data described later in the format of the camera-integrated VTR 2, the recording of the first frame of each scene 1 shot by the camera-integrated VTR 2 is started. The end of the scene 1 is detected, and the image of the first frame of the scene 1 is automatically stored as a clip image in the memory of the disc editing apparatus 5. Then, the operation of the non-linear editing in the disk editing device 5 is controlled using the clip. In other words, the camera-integrated V
The component video signal captured by the TR 2 is supplied to a hard disk array in the disk editing device 5. The video signal supplied to the hard disk array is displayed on a computer monitor.

By operating a pointing device such as a mouse connected to the computer, an operator who operates the computer uses an automatically generated clip image to input an in point (edit start point) or an out point (edit end point). ) Can be specified. Also, by using the GUI displayed on the monitor of the computer, a control command for performing editing can be generated. The generated control command is transmitted to the hard disk array as a SCSI control command, and reproduction control of the hard disk array is performed. The reproduced video signal is displayed on a monitor of a computer and sent out through a switcher.

Next, referring to FIG. 2, a camera-integrated VTR will be described.
The configuration of the recording system will be described. The recording system of the camera-integrated VTR includes a camera unit 10 and a VTR unit 16. The camera unit 10 includes a lens 11 for condensing light reflected on a subject and a C for converting the condensed light into R (red), G (green), and B (blue) electric signals by photoelectric conversion.
A CD imaging device 12 and a signal processing circuit 13 for performing signal processing on the photoelectrically converted R, G, B electric signals to convert them into a luminance (Y) signal and two color difference signals (RY, BY).
A viewfinder 15 for displaying a signal-processed luminance (Y) signal and two color difference signals (RY, BY) on an image, a light-condensing function of the lens 11, and signal processing of the signal processing circuit 13. And a camera microcomputer 14 for controlling the display function of the viewfinder 15.

The VTR section 16 receives a luminance (Y) signal and two color difference signals (RY, BY) and thins out the input color difference signal (RY, BY) data. Frequency conversion circuit 1 for converting the sampling frequency
7, a video data compression circuit 18 for compressing the frequency-converted video data, an error correction circuit 19 for adding an error correction code to the compressed video data, and a recording and encoding of the error correction encoded compressed video data. (Channel coding) and a modulation circuit 20 for modulating the recording head 2
1 and a bidet tape 22 built in the cassette tape 3.

The sampling frequency conversion circuit 17 has the following functions. The input luminance (Y) signal and the two color difference signals (RY, BY) are based on CCIR (International Radio Communication Advisory Committee, current ITU-RS) recommendation 601 “4: 2:
In the case of the current television signal, the luminance (Y) signal is sampled at 13.5 MHz and the two color difference signals (RY, BY) are both sampled at 6.75 MHz. Each of the three types of signals has a quantization bit number of 8 bits, a luminance (Y) signal and two color difference signals (R-
Y, BY) is 216 Mbit / s
ec. Therefore, the sampling frequency conversion circuit 17
Decimates the input color difference signal data to reduce the transmission speed to 1.
It is set to 62 Mbit / sec. 525 input signals / 6
In the case of a signal of 0 Hz, the two color difference signals are thinned out, and the sampling frequency is halved, ie, 3.375 MHz “4: 1:
One-component signal ".

Although not shown, the video data compression circuit 18 converts the luminance (Y) signal subjected to the sampling frequency conversion and the two color difference signals (RY, BY) into 8 pixels.
A macro block is composed of six blocks including four luminance (Y) signal blocks and two color difference signal (RY, BY) blocks divided into eight pixel blocks, and the divided data is displayed on a screen. A block-division shuffling circuit for shuffling so that the positions are interchanged, a DCT (discrete cosine transform) is performed after averaging the information amount in a fixed length range, and a video with a lot of motion is a video with little motion in a field. Has a motion detection circuit that calculates within a frame, has a DCT calculation weighting circuit that weights data, a rearrangement circuit that rearranges the data weighted by the DCT calculation, and a code amount estimation circuit, and has a data quantization circuit. And an adaptive quantization circuit that performs variable length coding (VLC) on the quantized data and performs variable length coding on each of the five macroblocks. It has a variable length encoding circuit to be constant, and a deshuffling circuit to return the encoded data to the original position on the screen.

The error correction circuit 19 adds a Reed-Solomon product code based on an inner code and an outer code so that a random error can be corrected by an inner code and a burst error can be corrected by an outer code. The modulation circuit 20 performs 24-25 conversion on the video data to which the error correction code has been added, scrambles the video data, and divides the video data into 24 bits at a time.
After adding bits to multiplex the tracking pilot signal to 25 bits, it performs interleaved NRZI conversion to generate a recording modulation signal.

The operation of the recording system of the thus-configured camera-integrated VTR according to the present embodiment will be described. Camera unit 1
At 0, the light reflected by the subject is condensed by the lens 11, and the condensed light is photoelectrically converted by the CCD image sensor 12 and converted into R (red), G (green), and B (blue) electric signals. Is done. The R, G, and B electrical signals that have been photoelectrically converted are subjected to signal processing by a signal processing circuit 13 to obtain luminance (Y).
The signal is converted into a signal and two color difference signals (RY, BY). The processed luminance (Y) signal and two color difference signals (RY, BY) are displayed as images by the viewfinder 15. At this time, the focusing function of the lens 11 and the signal processing circuit 1 are controlled by the camera microcomputer 14.
3 and the display function of the viewfinder 15 are controlled.

Further, in the VTR section 10, the sampling frequency conversion circuit 17 outputs the luminance (Y) signal and the color difference signals (RY, BY) inputted from the two color difference signals (RY, BY). 3.) The sampling frequency is converted by thinning out the data. That is, in the sampling frequency conversion circuit 17, the input color difference signal data is thinned out and the transmission speed is converted to 162 Mbit / sec. When the input signal is a signal of 525 lines / 60 Hz, the two color difference signals are thinned out, and the sampling frequency is reduced by half to 3.37.
It is converted to a 5 MHz “4: 1: 1 component signal”.

The frequency-converted video data is compressed by a video data compression circuit 18. That is, in the video data compression circuit 18, the luminance (Y) signal and the two color difference signals (RY, BY), each of which has been subjected to sampling frequency conversion by the block division shuffling circuit, are divided into blocks of 8 pixels × 8 pixels. Then, a macro block is composed of six blocks including four luminance (Y) signal blocks and two color difference signal (R-YB-Y) blocks, and shuffling is performed so that the positions of the divided data on the screen are switched. Is done. A DCT (discrete cosine transform) is performed after the information amount in the fixed length range is averaged by the DCT calculation weighting circuit, and a video with much motion is in a field and a video with little motion is in a frame by the motion detection circuit. An operation is performed and data is weighted. The data weighted by the DCT operation is rearranged by the rearrangement circuit. Data quantization is performed so that the code amount after variable-length coding by the adaptive quantization circuit using the code amount estimation circuit becomes constant for every five macroblocks. Variable length coding (VL) is performed on the quantized data by a variable length coding circuit.
The amount of code after the variable length coding performed by C) is made constant for every five macroblocks. The data encoded by the deshuffling circuit is returned to the original position on the screen.

An error correction circuit 1 is added to the compressed video data.
9 adds an error correction code. That is, in the error correction circuit 19, a Reed-Solomon product code with an inner code and an outer code is added, so that a random error can be corrected by the inner code and a burst error can be corrected by the outer code. The error correction coded compressed video data is recorded and coded by the modulation circuit 20 and modulated. That is,
In the modulation circuit 20, the video data to which the error correction code is added is subjected to a 24-25 conversion, scrambled, and then divided into 24 bits. After the signals are multiplexed, interleaved NRZI conversion is performed to generate a recording modulation signal. As a result, the video data is recorded on the video tape 22 in the cassette tape 3 using the recording head 21 in a recording format described later. Note that the same applies to the audio block, and a description thereof will be omitted.

Next, the format of video data recorded on the video tape 22 in the cassette tape 3 by the recording system of the camera-integrated VTR according to the present embodiment will be described. As shown in FIG. 8A, the video data output from the video data compression circuit 18 is n consecutive uncompressed video data of S1, S2 to Sn in one frame period. Video data is compressed by a video data compression circuit 11
Is compressed to 1/5.

The video data output from the video data compression circuit 18 is n non-consecutive 1/5 compressed video data V1, V2 to Vn in one frame period as shown in FIG. 8B. This compression processing is performed by the DCT as described above.
This is done using a transformation. The compression process is performed by compressing video data to 1/5 for each image.

Although not shown, in the modulation circuit of the video data compression circuit, the video data subjected to the error correction coding processing and the audio data supplied from the audio block (not shown) are processed so as to be recordable. You. In other words, based on the timing signal, as shown in FIG.
(Auxiliary) data 91, n audio data A1, A2 to An and video data V1, V
2, to Vn.

That is, the subcode 90 is generated by the timing signal TS, and the AUX data 9 is generated by the timing signal T0.
1 is generated, audio data A1 is generated by a timing signal TA1, video data V1 is generated by a timing signal TV1, audio data A2 is generated by a timing signal TA2, and video data V2 is generated by a timing signal TV2. Similarly, the timing signal T
The audio data An is generated by An, and the video data Vn is generated by the timing signal TVn. In the AUX data area of the audio block, a flag indicating the start and end of recording of one frame of data is recorded. The operation of generating the recording signal is performed by one frame of video data V1,
V2 to Vn and audio data A1, A2 to A
n, respectively, with timing signals T0, TV1, TV
2, to TVn, TA1, TA2, to TAn,
This is performed by reading.

The data format for one track output from the modulation circuit 20 is as shown in FIG. 10, the data for one track includes an audio block 100, a video block 102, and a subcode block 110. Here, the video block 102 is a sync area 10 composed of data of a synchronization signal.
3, an ID code 104 including identification data, video data 106, AUX data 105 and 107, an outer parity 108 using an outer code, and an inner parity 109 using an inner code. Here, an AUX data 101 area is provided in the audio block 100, and a flag of recording start and end of one frame of data is recorded in the AUX data 101 area. In one frame period, data of one track shown in FIG. 10 is recorded on ten tracks. The data for one frame is supplied to the modulation circuit 20.

The data for one frame is recorded and coded (channel coded) by the modulation circuit 20. The data of one frame subjected to the channel coding is sequentially supplied to the recording head 21. The recording head 21 records each data on the video tape 22 of the cassette tape 3.
One frame of data is recorded on the video tape 22 of the cassette tape 3 in the tape format shown in FIG. As shown in FIG. 7, each track is formed obliquely on a video tape 22 having a width of 1/4 inch.
Track data is recorded. Each track has a margin 70, a subcode 71, video data 72,
It has audio data 73 and a margin 74. The AUX data 75 is provided between the video data 72 and the audio data 73 so that the AUX data 77 of the audio data 73 records the recording start and end flags of one frame of data in the recording portion. It has been done. By recording the same flag 10 times for one image, the reliability of recording the flag is improved.

FIG. 11 shows an audio AUX according to this embodiment.
Shows the data structure. In FIG. 11, audio AU
The X data 111 is composed of 5 bytes from PC0 to PC4. PC0 indicates the content of data recorded below in the header. PC1 is CGMS (Copy Gen)
error System): Copy Guard Management I
D, SS (Source Situation): Indicates a rank for setting whether the source is scrambled, limiting the listener, and the like. PC2 is REC START
(112): Flag indicating start of recording of video data of one frame, REC END (113): Flag indicating end of recording of video data of one frame, REC MOD
E: recording mode, INSERT CH: insert channel. PC3 is a DRF (Direction)
n Frag): indicates the direction of the digital interface, SPEED: indicates the recording speed. PC4
Indicates a GENRE CATEGORY: a frame for designating a data category, allocating a use such as a movie, education, and the like, and operating the frame.

Next, the configuration of the playback system of the VTR of the tape editing apparatus according to the present embodiment will be described with reference to FIG. The reproduction system 30 of the VTR of the tape editing apparatus has a configuration opposite to that of the recording system of the camera-integrated VTR shown in FIG. The VTR reproduction system 30 includes a demodulation circuit 32 that demodulates the modulated video data reproduced by the reproduction head 31, an error correction circuit 33 that detects and corrects errors in the demodulated video data, and an error correction circuit 33. A video data expansion circuit 34 for expanding the extracted video data, and a thinned color difference signal (R
-Y, BY) data, a sampling frequency conversion circuit 35 for converting the data into an original luminance (Y) signal and two color difference signals (RY, BY), and a microcomputer 36 for controlling the operation of the circuit. And Further, the VTR has an encoder 37 for converting a luminance (Y) signal and two color difference signals (RY, BY) output from the sampling frequency conversion circuit of the VTR into a format of the digital interface 6. The reproduction system 30 of the VTR of such a tape editing device operates in the opposite manner to the recording system of the camera-integrated VTR 2. Note that the tape editing apparatus in FIG.
Only the reproduction system 30 of the TR is shown, but the recording system of the VTR is
Since the configuration is the same as that of the recording system of the VTR of the camera-integrated VTR shown in FIG. 2, the description is omitted.

Next, the connection relationship between the tape editing device 4 and the disk editing device 5 will be described with reference to FIG. In FIG. 4, a tape editing device 4 and a disk editing device 5 are connected via a digital interface 40 so as to enable bidirectional data transmission. The disk editing device 5 records (REC) video data transmitted from the tape editing device 4 via the digital interface 40, and converts the video data reproduced (PB1, PB2) from the disk editing device 5 to a digital interface. A video / audio processing unit 41 for transmitting to the tape editing apparatus 5 via
It has a disk controller 42 that performs recording processing on the hard disk 43 via the CSI interface and reproduces video data recorded on the hard disk 43, and a hard disk 43 that distributes and records data on a plurality of hard disks. The video / audio processing unit 4
1 is connected to the switcher 44 via a bus line,
D / A conversion is performed by the D / A conversion unit 45 and sent out,
It is connected so that A / D conversion can be performed by an A / D converter 45 from outside and video data can be input via a switcher 44. Here, the hard disk 43 shown in FIG.
When video data is recorded on the PC2 shown in FIG.
REC START (112): Flag indicating the start of recording of one frame of video data, REC END (1
13) The disk controller 42 detects a flag indicating the end of recording of one frame of video data, and creates a clip image serving as an index on a memory described later, using the first image of each frame as a clip image. Although not shown in FIG. 4, these operations are executed by a control unit of a computer of the disc editing device 5 described later.

Next, the internal configuration of the computer of the disc editing apparatus will be described with reference to FIG. The disc editing apparatus 5 includes a system bus 50 for transmitting control signals and video data, a CPU 51 for performing overall control, a first video processor 52 and a second video processor for performing image processing and the like on video data. 53, a display controller 54 for controlling a video signal displayed on a video monitor 55 and a graphic display for a GUI, a cursor control device (generally called a mouse), a control panel 56b and a keyboard 56c.
Pointing device interface 56 for generating control data based on a command from a pointing device such as an external device, and an external interface unit 5 having an encoder and a decoder for performing data transmission by the tape editing device 4 and the digital interface 40.
7 and a hard disk array 58 having a disk controller and a hard disk.

The system bus 50 internally communicates video data, command data, and address data for transmitting video data, and includes an image data bus 50a for transmitting video data and a control signal. , And a command data bus 50b for transmitting the command data. The image data bus 50a includes first and second
Video processors 52 and 53 and a display controller 54 are connected to each other. Therefore, the first video processor 52, the second video processor 53, and the display controller 54 are connected via the image data bus 50a, and can transmit video data between each block. On the other hand, a CPU 51, a first video processor 52, a second video processor 53, a display controller 54, a pointing device interface 56, and an external interface unit 57 are connected to the command data bus 50b. That is, all the internal blocks are connected via the command data bus 50b.

The external interface unit 57 and the hard disk array 43 are connected by a communication cable based on the communication format of the SCSI interface. The communication format of the SCSI interface is a communication format that can simultaneously transmit / receive a video signal and a control command.

The CPU 51 is a block for controlling the entire computer. The CPU 51 stores an operating system of a computer.
The OM 50a and the application program recorded on the hard disk of the hard disk drive (not shown) are read and uploaded to the RAM 51b in the CPU 51.

The first video processor 52 receives the first component video signal V1 input to the computer, converts data of the first component video signal V1 and temporarily converts the converted component video signal into the first component video signal V1. This is a block for buffering. Specifically, the first video processor 52 includes a processor controller 52a that controls the entire video processor, a data converter 52b that converts a composite video signal into component video data when receiving the composite video signal, and a data converter 52b. And a frame memory 52c for temporarily storing the transmitted video data for several frames.

The processor controller 52a sends a control signal for data conversion to the data conversion unit 52b, and transmits a control signal for extracting a time code from the component video signal V1 input to the data conversion unit 52b to the data conversion unit 52b. 52b. Further, the processor controller 52a outputs a control signal for controlling read / write timing and read / write address of the frame memory 52c. Specifically, the processor controller 52a sets the time code to be transmitted to the display controller 54 constituting the GUI manager to correspond to the video data (frame data).
The read timing of the frame memory 52c is controlled.

The data converter 52b converts a composite video signal into a component video signal when receiving the composite video signal based on a control signal from the processor controller 52a. When converting to the component digital video data, the time code data is extracted.
The video data converted to component digital is sent to the frame memory 52c, and the extracted time code is sent to the processor controller 52a.

The frame memory 52c temporarily stores video data converted into component digital data. The read / write timing of the frame memory 52c is controlled by the processor controller 52a. The frame memory 52c is composed of two frame memories (having a capacity of several Mbytes), and has a capacity of counting Mbytes. The video data stored in the frame memory 52c is 720 pixels × 48 pixels.
This is video data composed of 0 pixels, and the frame memory can store video data for several frames. The video data of 720 × 480 pixels stored in the frame memory 52c is read based on the read control of the processor controller 52a. Frame memory 5
Video data read from 2c is 720 pixels × 4
80 pixels, ie, not video data of all pixels, 9 pixels
This is video data whose data amount has been thinned out so as to be 0 pixels × 60 pixels. Here, thinning out the data amount simply means reducing the amount of video data from the frame memory 52c. 90 pixels read out x
The 60-pixel video data is sent to the display controller 54 via the image data bus 50a.

The second video processor 53 has exactly the same configuration as that of the first video processor 52. That is, a processor controller 53a that controls the entire video processor 53, a data converter 53b that converts a composite video signal into digital component video data when it is received,
A frame memory 53c for temporarily storing video data of several frames transmitted from the data converter 53b. The difference between the first video processor 52 and the second video processor 53 is that the first video processor
2 is supplied with the component video signal V1, and the second
Is supplied with the component video signal V2.

The component video signal V1 is a video signal in which a time code is superimposed in the vertical synchronization period of the input video signal V1 inside the tape editing apparatus.
This is a video signal that is temporally the same as the input video signal input in real time. That is, the frame memory 52c
Is the same video data as the video signal obtained by digitizing the input video signal.

The component video signal V2 is a video signal reproduced from the hard disk according to a command from a computer. Therefore, the component video signal V2 is a video signal that is not temporally related to the input video signal V1.

The component video signal V2 supplied to the second video processor 53 is, like the component video signal V1 supplied to the first video processor 52, the data conversion unit 53b and the frame memory 53c.
Is transmitted to the display controller 54 as digital video data.

The display controller 54 is a control block for controlling data displayed on the monitor 55. The display controller 54 is a memory controller 54
a and a VRAM (video random access memory) 54b. Memory controller 54a
Is the VRAM 5 according to the internal synchronization inside the computer.
4b controls the read / write timing. This VR
The AM 54b includes the video data from the frame memory 52c of the first video processor 52, the video data from the frame memory 53c of the second video processor 53, and the image data from the CPU 51 in the timing control signal from the memory controller 54a. It is stored based on The image data stored in the VRAM 54b is transmitted to the VRAM 54b by a control signal from the memory controller 54a based on synchronization inside the computer.
Is displayed graphically on the video monitor read from the. The graphic display thus displayed on the monitor 55 is a graphic display for the GUI. Here, the image data sent from the CPU 51 to the VRAM 54b is, for example, image data such as a window or a cursor bar. By displaying these plural types of image data on the monitor 55, a graphic display for a GUI can be obtained.

An interface connected to a hard disk (not shown) is a hard disk drive (HDD).
And a block for performing an interface. This hard disk and the interface are RS-42
Communication is performed based on the second transmission format. An application program to be started by the computer is installed on the hard disk (not shown). When the application program is executed, the application program is read from the hard disk drive and uploaded to the RAM 51b. When terminating the application program, the work file created by the editing operation stored in the RAM 51b is downloaded to the hard disk.

A not-shown floppy disk interface is a floppy disk drive (FD).
This is a block for interfacing with D).
Communication between the floppy disk interface and the floppy disk drive is performed based on the RS-422 transmission format. The floppy disk drive stores an EDL (Edit Decision List) for indicating an editing result of the editing operation.

The pointing device interface 56 is a block for interfacing with a mouse 56a, a control panel 56b, and a keyboard 56c connected to a computer. The pointing device interface 56 receives, for example, detection information of a two-dimensional rotary encoder provided on the mouse 56a and click information of left and right buttons provided on the mouse 56a from the mouse 56a. The pointing device interface 56 decodes the received information and sends it to the CPU 51. Similarly, the pointing device interface 56 receives information from the control panel 56b and the keyboard 56c, decodes the received information, and sends it to the CPU 51.

Next, with reference to FIG. 6, the configuration of the disc control unit of the disc editing apparatus will be described in detail. This disk control unit corresponds to the hard disk array 58 and the external interface 57 shown in FIG. 6, the disk control unit of the disk editing apparatus 5 includes a disk controller 42, an interface circuit 60, a video processing circuit 61, and a hard disk 43. Disk controller 42
Is a CPU 42a, a SCSI controller 42b,
It has a time code generator 42c. CPU42
a is a central processing circuit for controlling all the blocks of the hard disk 43. The CPU 42a receives a control command based on the communication protocol of the digital interface 40 supplied to the disk controller 42 via the digital interface 40 from the reproduction system of the VTR of the external tape editing device 4, and controls the operation of each block according to the command. Control. Also, CP
The U 42 a receives the external time code supplied to the disk controller 42 from the time code generator 42 c or the outside, and supplies the received time code data to the hard disk 43 and the video processing circuit 61. Further, the CPU 42a has therein a RAM for storing all recording addresses of video data recorded on the hard disk 43 in frame units and all time codes of the recorded frames in association with each other. Similarly, the hard disk 43 has a RAM for storing all recording addresses of audio data recorded in units of frames and all time codes of recorded frames in association with each other. Therefore, just by specifying the time code from outside,
The video data and the audio data can be easily reproduced from the hard disk 43.

Also, the disk controller 42
In accordance with a command from U42a, the video processing circuit 61
In addition to controlling the read timing at the time of reading video data from the buffer memory 61b provided at the same time, the write timing at the time of writing video data to the buffer memory 61d is controlled.

Also, the disk controller 42
The control command from the U42a, the video data in frame units and the time code data related to the frame video data are supplied to the hard disk 43 and recorded on the hard disk 43, and the video data is reproduced by the hard disk 43. Control.

The input system of the interface circuit 60 extracts a synchronizing signal of the input video signal V1 in the format of the digital interface 40, and converts the input video signal V1 into a component signal.
a. The output system of the interface circuit 60 provides the reproduced video signal supplied from the video processing circuit 61 with a vertical synchronization signal on which a time code is superimposed based on the phase of the external synchronization signal supplied to the disk controller 42. And an encoder 60b for converting the data into a format of the digital interface 40.

The input system of the video processing circuit 61 includes a compression section 61a for compressing the video data supplied from the interface circuit 60 in, for example, a frame unit based on the MPEG standard, and a write command from the CPU 42a. A buffer memory 61b for storing the video data from the compression section 61a and supplying the compressed video data to the expansion section 61c based on a write command from the CPU 42a. The output system of the video processing circuit 61 has a decompression unit 61c that receives the compressed video data from the buffer memory 61d, decompresses the compressed video data and outputs it as video data, and a buffer memory 61d that stores the video data. I have. The buffer memories 61b and 61d are composed of FIFOs and have a capacity to store video data for several frames.

Next, the recording and reproducing operations of the disc control unit will be described. First, the recording operation will be described. The video signal supplied to the interface circuit 60 is subjected to predetermined input / output processing and supplied to the video processing circuit 61. The video data compressed by the compression section 61a of the video processing circuit 61 is supplied to a buffer memory 61b. The video data supplied to the buffer memory 61b is read from the buffer memory 61b in response to a read command from the CPU 42a. The CPU 42a
The address is transmitted so as to associate the time code data supplied from the time code generator 42c with the video data supplied from the buffer memory 61b. The CPU 42a supplies a recording command and video data to the hard disk 43 so as to record the supplied video data at the designated address. This allows
The hard disk 43 records the video data, and stores all the recording addresses of the video data recorded on a video tape in frame units in the RAM in association with all the time codes of the recorded frames.

Next, the reproducing operation of the hard disk will be described. When a playback command according to the communication protocol in the format of the digital interface 40 is sent to the disk controller 42, the CPU 42a supplies the playback command to the hard disk 43. The hard disk 43 reproduces the recorded video data. The reproduced video data is stored in the buffer memory 61d according to the timing of the CPU 42a. The video data read from the buffer memory 61d is expanded as video data by the expansion circuit 61c and supplied to the interface circuit 60. The interface circuit 60 superimposes the time code supplied from the CPU 42a on the vertical synchronization signal period of the supplied video data, and outputs it as a component video signal V2.

Here, the digital interface QSDI, which is an extension of the SDI format, is used.
The format will be described. First, the SDI format, which is a premise of the format, will be briefly described. As a serial interface standard, SMPT
E (Society of Motor Picture)
e and Television Engineer
s / American Film and Television Engineers Association) 259M has been standardized. Such a serial interface defines a procedure for adding a serial synchronization signal to data to serialize the data and transmitting the data, and a procedure for parallelizing the data again based on the serial synchronization signal. In this manner, long-distance transmission can be performed by a serial interface using a single cable.

The serial digital interface SDI standardized in such SMPTE 259M
(Serial Digital Interface)
ce) for the QS uniquely developed by the applicant of the present invention.
DI (Quarter Serial Digital)
Interface) method. The QSDI method is
Although more suitable for multimedia and multi-channel than the SDI method, the tape format of the camera-integrated VTR shown in FIGS.
This is a transmission method having the same recording signal as a tape recording signal recorded on a 4-inch wide video tape. Therefore, QS
From the tape editing device 4 to the disk editing device 5 via DI
By transmitting the video data to the hard disk 43, the video data can be recorded in the disk editing device 5 in the recording state closest to the source tape.

Next, the operation of creating a clip in the disk editing apparatus of this embodiment will be described. FIG.
In step S1, the digital interface QSDI4 is transmitted from the tape editing device 4 to the disk editing device 5 in step S1.
0 to start uploading video data. Specifically, the disk controller 42 of the disk editing device 5 sequentially records video data serially transmitted from the tape editing device 4 via the digital interface QSDI 40 to the hard disk 43 via the SCSI interface. The transmission of video data by the digital interface QSDI 40 in this case is shown in FIG.
To the recording signal shown in FIG. 10 for each frame.

In step S2, the REC shown in FIG.
It is determined whether or not the START bit (flag) (112) is ON. In step S2, REC START
If bit (112) is on, the process proceeds to step S5, where a clip table is created. In step S2,
If the REC START bit (112) is not ON, the process proceeds to step S3, and in step S3, REC
It is determined whether the END bit (flag) (113) is ON. In step S3, REC ENDbit
If (113) is on, the process proceeds to step S5, where a clip table is created. Specifically, as shown in FIG. 13, REC START bi of the audio AUX data 111 for each of the scene 1, the scene 2, the scene 3, and the scene 4 recorded on the cassette tape 3.
When the disk controller 42 detects t (112) and REC ENDbit (113), a clip table including the time code data 130 is created. That is, for scene 1, the time code of the image of the frame in which the REC START bit of PC2 of the audio AUX data is turned on is set to Time code.
e1, Time code of the image of the frame in which the REC END bit is turned on is Time code2,
Similarly, for scene 2, REC START bi
The time code of the image of the frame for which t was turned on is Ti
The time code of the image of the frame in which me code3 and REC ENDbit are turned on is
4. For scene 3, the time code of the image of the frame in which the REC START bit is turned on is Time
code5, the time code of the image of the frame in which the REC END bit is turned on is Time code
6. For scene 4, the time code of the image of the frame in which the REC START bit is turned on is set to Time.
code7, the time code of the image of the frame with the REC END bit turned on is Time code8
The disk controller 42 creates a clip table in an internal RAM (memory) not shown.

Next, in step S4, it is determined whether or not the upload has been completed. Specifically, for example, the detection is performed by the disk controller 42 detecting an end flag indicating the end of transmission of the digital interface 40 supplied from the interface circuit 60. If the upload has not been completed in step S4, the process returns to step S2, and the determination and processing of steps S2 to S4 are repeated. If the upload has been completed in step S4, the process proceeds to step S6. In step S6,
Capture the image of the in / out point based on the clip table. Specifically, based on the clip table including the time code data 130 created in step S5, the disk controller 42 queues up the hard disk 43 and
1 is the in point of scene 1, Timecode 2 is scene 1
In the same manner, Time code 3 is the in-point of scene 2, Time code 4 is the out-point of scene 2, Time code 5 is the in-point of scene 3, and T
im code6 is the out point of scene 3, Time
code7 is the in point of scene 4, Time code8
Is taken as the out point of scene 4, the video is captured by capturing the still image, and the internal RAM (memory)
Remember on top.

In step S7, the clip 131 containing the image
Create More specifically, in FIG. 13, the disk controller 42 creates a clip having an image of scene 1 and time code data of the in-point and out-point of scene 1 and stores the clip in an internal RAM (memory). . In step S8, it is determined whether to group the clip tables. If it is determined in step S8 that the clip tables are to be grouped, the process proceeds to step S9, and the clip tables are corrected to the grouping table. Then, in step S10, the unnecessary clip is deleted, and the process ends. If the clip tables are not grouped in step S8, the process ends immediately. Specifically, the disc controller 42 or the editor detects the movement of each scene, and when the movement of each scene is small, judges that each scene is a connection of continuous images, and Are combined into a lump of scenes to create a clip map (collection of clips) in the final state. The clip map thus created is stored in the hard disk 43 so as to be added at the end of the scene.

Finally, as shown in FIG. 14, the picture-incorporated clip 131 created as shown in FIG. 13 is pasted on the timeline and edited. The paste editing shown in FIG. 14 is performed by an operator on the GUI 140, and a source list is finally created to be used for subsequent editing. Specifically, in FIG.
In the “ARD”, scenes 1, 2, 3, and 4 of the created clips are sequentially pasted. "EDI
"T" indicates that all of scene 1, scene 2, scene 3, and scene 4 are edited. “V1” indicates channel 1 in the input video data from the second half of scene 1 and scene 2 to the second half of scene 3. "EFFECT" is scene 2,
This is information for performing a special effect operation on scene 3. “V2” indicates the channel 2 of the input video data from the second half of the first half of the scene 2 to the second half of the scene 3. "DSK" (Do
wn Stream Key) is a function output for creating a title, a telop, and the like. “A1” indicates the input audio data of channel 1 from the second half of scenes 1 and 2 to scene 3. "A2" is scene 2 and scene 3
The input audio data indicates channel 2 from the second half to scene 4. “A3” and “A4” indicate channels 3 and 4 of the input audio data.

In this manner, when performing clip pasting and editing on the GUI 140, there is no need to worry about the start address of the necessary cut, and the pasting operation proceeds using the picture-containing clip 131 as a material. Therefore, a high-quality editing result can be obtained more intuitively.

As described above, since a clip can be automatically created based on the recording format of the cassette tape 3, the time required for non-linear editing can be reduced.

After the editing, the clip with picture 131 and the time code data 130 created by the disc editing apparatus 5 are supplied to the tape editing apparatus 4 via the digital interface 40 after the editing, and the cassette tape Record after the 3rd last scene.

The operation of recording clip data on a tape will be described with reference to FIG. As described above, the first image of each scene of the video data 150 is stored in the RAM (memory) by the disk editing device 5 and the image is stored in one frame per frame in the horizontal direction (H) × Clip 151 with picture in which vertical direction (V) is divided into 4 × 8 = 32
And 32 on 7 screens for up to 7 frames
It is created as a clip 151 with an image divided into 7 × 224. Then, the clip 151 is recorded after the last scene on the hard disk 43. Further, the clip 151 is supplied to the tape editing device 4 via the digital interface 40, and is recorded after the last scene of the cassette tape 3. Note that the tape editing apparatus in FIG. 3 described above only shows the VTR playback system, but the VTR recording system has the same configuration as the VTR recording system of the camera-integrated VTR shown in FIG. In this case, the time code data 130 of the clip is both supplied to the tape editing device 4 via the digital interface 40 and stored in the memory built in the cassette tape 3.

Next, referring to FIG. 16, a description will be given of a split and composite screen of a clip. In FIG. 16, one image at the beginning of each scene is video-captured, and 32 images are collected for one frame.
X Creates an image-containing clip of the divided composite screen image 160 in which the vertical direction (V) is divided into 4 × 8 = 32. The divided composite screen 160 divides each of the horizontal direction (H) and the vertical direction (V) into eight, and four original images 161 and 162 in the horizontal direction (H) every other one and eight in the vertical direction (V). So that it fits. The original images 161 and 162 are 720 pixels × 480 pixels in the horizontal direction (H) × vertical direction (V), and the divided images are 90 pixels × 60 pixels in the horizontal direction (H) × vertical direction (V). . Also, a gray image 163 is displayed on the screen indicated by oblique lines where the original images 161 and 162 in the horizontal direction (H) are not fitted.
To avoid compression performance degradation during compression processing.

As a result, the clip 131 with the picture and the time code data 130 created by the disc editing apparatus 5 are obtained.
Can be used without worrying about the capacity of the memory built in the cassette tape 3, so that editing work after using the cassette tape 3 can be easily performed.

According to the editing apparatus of the present embodiment described above, when editing each scene using the format of video data recorded by the camera-integrated VTR 2, clips recorded for each scene are automatically copied. Can be created. As a result, in the actual editing, this clip can be used directly, and the editing operation can be easily performed by using a clip further modified based on the clip, and can be executed in a short time. can do.

[0077]

According to the editing apparatus of the present invention, a sub-editing section for recording and reproducing input video data based on a format having data indicating the start and end of recording of video data for each frame, and a sub-editing section When recording and reproducing the video data supplied from the unit, data indicating the start and end of recording of the video data is detected, and clip data having image information is created based on the data. Since the main editing unit is provided, a clip for each recorded scene can be automatically created when editing each scene using the format of video data. As a result, in the actual editing, this clip can be used directly, and the editing operation can be easily performed by using a clip further modified based on the clip, and can be executed in a short time. It has the effect that it can be done.

In the editing apparatus of the present invention, the main editing unit uses a rotary recording medium and the sub-editing unit uses a tape-shaped recording medium. There is an effect that non-linear editing can be performed in the main editing section using the selected clip.

In the editing apparatus according to the present invention, the input video data based on a format having data indicating the start and end of recording of video data for each frame supplied to the sub-editing section, Since the video data is recorded by the camera-integrated video tape recorder, editing of each scene recorded by the camera-integrated video tape recorder in which video data is recorded in such a format is performed by using an automatically generated clip. There is an effect that it can be easily performed.

In the editing apparatus according to the present invention, the main editing unit and the sub-editing unit are connected via a predetermined digital interface, and the digital interface is connected to the input video data based on the format. Since they have the same recording signal, there is an effect that a high-quality clip can be created from the video data in the recording state closest to the source data.

In the editing apparatus of the present invention, the clip data created in the main editing section is supplied to the sub-editing section and recorded. There is an effect that editing can be performed in the sub-editing section.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an editing system according to an embodiment of the present invention.

FIG. 2 is a camera-integrated VTR according to an embodiment of the present invention;
FIG. 2 is a block diagram showing a configuration of a recording system of FIG.

FIG. 3 is a diagram showing a V of the tape editing apparatus according to the embodiment of the present invention;
FIG. 3 is a block diagram illustrating a configuration of a reproduction system of the TR.

FIG. 4 is a diagram showing a connection relationship between a tape editing device and a disk editing device according to an embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a disc editing apparatus according to an embodiment of the present invention.

FIG. 6 is a block diagram illustrating a configuration of a disc control unit of the disc editing apparatus according to the embodiment of the present invention;

FIG. 7 is a camera-integrated VTR according to an embodiment of the present invention;
FIG. 4 is a diagram showing a tape format.

FIG. 8 is a camera-integrated VTR according to an embodiment of the present invention;
FIG. 3 is a diagram showing compression of video data.

FIG. 9 is a camera-integrated VTR according to an embodiment of the present invention.
FIG. 4 is a diagram showing data mix timing of the data.

FIG. 10 is a camera-integrated VT according to an embodiment of the present invention;
It is a figure showing the track format of R.

FIG. 11 is an audio AUX according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a data configuration.

FIG. 12 is a flowchart showing a clip creation operation of the disc editing apparatus according to the embodiment of the present invention;

FIG. 13 is a diagram showing a clip creation operation according to an embodiment of the present invention.

FIG. 14 is a diagram illustrating pasting and editing of a clip according to an embodiment of the present invention;

FIG. 15 is a diagram showing recording of clip data according to an embodiment of the present invention.

FIG. 16 is a diagram showing a split and combined screen of a clip according to an embodiment of the present invention.

[Description of Signs] 1 ... Scene, 2 ... VCR with camera, 3 ... Cassette tape, 4 ... Tape editing device, 5 ... Disk editing device, 2
2: Video tape, 6, 40: Digital interface, 41: Video / audio processing unit, 42: Disk controller, 43: Hard disk, 111: Audio AUX data, 112: REC START flag, 113: REC END flag, 130: Time Code data, 131: clip with picture, 140: G

Claims (5)

[Claims] 1. A sub-editing unit for recording and reproducing input video data based on a format having data indicating the start and end of recording of video data for each frame, and video data supplied from the sub-editing unit A main editing unit that detects data indicating the start and end of recording of the video data and creates clip data having image information based on the data when recording and reproducing the video data. An editing device, characterized in that: 2. The editing apparatus according to claim 1, wherein said main editing unit uses a rotary recording medium, and said sub-editing unit uses a tape-shaped recording medium. Editing device. 3. The editing apparatus according to claim 1, wherein the input video data based on a format having data indicating a start and an end of recording of video data for each frame supplied to the sub-editing unit, An editing apparatus characterized by being recorded by an integrated video tape recorder. 4. The editing apparatus according to claim 1, wherein the main editing unit and the sub editing unit are connected via a predetermined digital interface, and the digital interface is similar to the input video data based on the format. An editing apparatus having a recording signal of (1). 5. The editing device according to claim 1, wherein the clip data created in the main editing unit is supplied to the sub-editing unit and recorded.