JPH1188822A - Editing device and editing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce video and audio signals recorded with high density without interruption even when the signals are discretely reproduced by reproducing the video and audio signals on the condition of fixed angular velocity. SOLUTION: A spindle motor in a drive rotationally drives an optical disk 3 on the condition of fixed angular velocity under the control of a spindle servo circuit. The revolving speed of the optical disk 3 is set higher than revolving speed in the case of accessing a system data area on the condition of fixed linear velocity. Concretely, the revolving speed is set so as to reproduce digital video and audio signals at the data transfer speed of 50 [Mbps] in the inner most periphery of a user area and at the data transfer speed of 120 [Mbps] in the outer most periphery. Thus, in the optical disk 3 for successively recording signals from the outer peripheral side through the television camera 2, the drive can reproduce the signals while accelerating the data transfer velocity much more for the outer peripheral area where the signals are preferentially recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an editing apparatus and an editing system, and can be applied to, for example, a field editing system for editing a program collected on site. The present invention reproduces a video signal and an audio signal recorded on a disk-shaped recording medium at a high density by reproducing a video signal and an audio signal recorded on a disk-shaped recording medium under a constant linear velocity condition. A video signal and an audio signal can be reproduced without interruption even if they are discretely reproduced.

[0002]

2. Description of the Related Art Conventionally, in a news gathering site in a field outside a broadcasting station, a news gathering program is edited by a simple editing system, so that a news gathering result can be quickly broadcast. In such an editing system, the contents of a news gathered by a magnetic tape are temporarily recorded and edited in a hard disk device serving as an intermediate recording medium, so that the contents can be edited efficiently.

[0003] In other words, in the field, if the news gathering result is edited by so-called AB roll editing using two video tape recorders, it takes time to fast forward and rewind the magnetic tape to find a desired cut. In other words, editing work takes time.

For this reason, an editing system using an intermediate recording medium dubs video and audio signals recorded on a magnetic tape by, for example, a camera-integrated video tape recorder to a hard disk device. Thereafter, an editing point is set by reproducing the video signal and the audio signal on the hard disk device to create an editing list, and the video signal and the audio signal recorded on the hard disk device are recorded on a magnetic tape according to the editing list.

[0005] In this editing system, the time required for setting an editing point can be significantly reduced as compared with the AB roll editing using a magnetic tape, and the result of, for example, news coverage can be broadcast in a short time. can do.

[0006]

However, in this editing system, it takes time to dub video and audio signals recorded on a magnetic tape to an intermediate recording medium. By the way, even when a 30-minute coverage result is recorded on the hard disk device at, for example, a quadruple speed, it takes 7 minutes and 30 seconds to record on the hard disk device.

[0007] In addition, since the edited result is recorded again on the magnetic tape and brought back to the broadcasting station, it takes time to re-record the edited result on the magnetic tape.

[0008] If the time can be shortened, and the results of the news gathering can be processed much more efficiently than in the past, it is considered that the usability of this type of system can be further improved.

The present invention has been made in view of the above points, and aims to propose an imaging apparatus, an editing apparatus, and an editing system capable of processing a news gathering result much more efficiently than in the past. It is.

[0010]

According to the present invention, in order to solve the above-mentioned problems, the present invention is applied to an editing apparatus, and at least in a predetermined area, a disk on which a video signal and an audio signal are recorded under a condition of a constant linear velocity. Drive means for rotating the recording medium in rotation under a constant angular velocity condition; reproducing means for intermittently reproducing and outputting video and audio signals from the disk-shaped recording medium;
And a storage unit for temporarily storing the video signal and the audio signal output from the reproduction unit and continuously outputting the video signal and the audio signal.

In an image pickup apparatus applied to an editing system for recording a video signal and an audio signal while detachably holding a disk-shaped recording medium, at least in a predetermined area, the disk-shaped recording medium is kept under a constant linear velocity condition. In an editing apparatus for driving a medium, detachably holding the disc-shaped recording medium, and recording an edit list for editing a video signal and an audio signal on the disc-shaped recording medium, the disc-shaped recording medium is provided under a constant angular velocity condition. To reproduce the video signal and the audio signal.

At least in a predetermined area, a disk-shaped recording medium on which a video signal and an audio signal are recorded under a condition of a constant linear velocity is rotationally driven under a condition of a constant angular velocity to access the disk-shaped recording medium. This disk-shaped recording medium can be accessed at a high data transfer rate without switching the rotation speed of the disk-shaped recording medium on which high-density recording is performed. Therefore, in the preview, the video signal and the audio signal can be intermittently reproduced from the disc-shaped recording medium, and the disc-shaped recording medium can be discretely accessed. It can be temporarily stored and output continuously. Thus, from the imaging device to the editing process, the content of the news gathering and the like can be processed using one disk-shaped recording medium.

[0013]

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

(1-1) Configuration of First Embodiment FIG. 1 is a plan view showing an editing system according to a first embodiment of the present invention. In the editing system 1, a digital video signal and a digital audio signal, which are the contents of a news gathering, are recorded on an optical disk 3 using a television camera 2. Further, in the editing system 1, when the coverage is completed, the optical disk 3 is removed from the television camera 2, the optical disk 3 is loaded into, for example, a viewer 4 mounted on a vehicle, and the viewer 4 is operated under the control of the personal computer 5 to operate the optical disk 3. The digital video signal and the digital audio signal recorded on the optical disk 3 are reproduced, and an edit list of the digital video signal and the digital audio signal is recorded on the optical disk 3.

Thus, in the editing system 1, the optical disk 3 is brought back to a broadcasting station, and the optical disk 3
In accordance with the edit list recorded in, the editing result of the news gathering content recorded on the optical disk 3 can be immediately broadcasted, and if necessary, the editing result is directly transmitted from the viewer 4 to a broadcasting station via an SNG line or the like. It has been made possible to transmit.

FIG. 2 is a plan view showing the optical disc 3 applied to the system 1. The optical disk 3 is stored and held in a predetermined cartridge 3A, so that entry of dust and the like can be effectively avoided. Further, when the optical disc 3 is loaded into a device such as the television camera 2 or the viewer 4, the shutter disposed on the cartridge 3A is slid so that the information recording surface is exposed. , And can be accessed by the viewer 4.

The optical disk 3 is a rewritable so-called phase-change type optical disk having information recording surfaces formed on both sides, and a pre-groove serving as a guide groove for a laser beam is formed in a meandering manner. The optical disk 3 is driven to rotate so that the meandering period of the pre-groove becomes a constant period, and the optical disk 3 can be driven to rotate under the condition of a constant linear velocity. Further, in the optical disc 3, on one surface side, when viewed from this surface side, pregrooves are sequentially formed clockwise from the outer peripheral side to the inner peripheral side, while on the other surface side, the other pregroove is formed. When viewed from the surface side, the pregrooves are formed sequentially from the outer circumference to the inner circumference in a counterclockwise direction. Accordingly, in the optical disk 3, a pair of optical pickups arranged so as to face each other are sequentially moved from the outer side to the inner side, and the laser beam irradiation position is sequentially displaced along the pregroove on each side. Has been made possible.

In the optical disc 3, a system data area AR1 is formed on the inner peripheral side. Here, this system data area AR1 has three areas AR1A and A1 concentrically.
R1B, AR1C, divided into innermost area AR1A
Next, management data recorded at the time of manufacturing the optical disc is recorded. Here, the management data is composed of an optimum light quantity at the time of recording data on the optical disc 3, a serial number common to the optical disc 3, unique identification data assigned to each optical disc 3, and the like.

The management data of the digital video signal recorded on the optical disc 3 is recorded in the following outer area AR1B. Here, the management data includes the address information indicating the recording start position and the recording end position of each file by the digital video signal and the digital audio signal, the time code at the recording start time and the recording end time, and the editable file set by the cameraman It consists of identification data of whether or not, and data of conditions at the time of imaging. Here, the data of the conditions at the time of imaging is composed of the date and time of imaging, the location, the name of the cameraman, and the setting data of the television camera. The setting data includes the white balance, gain, and audio signal set for the television camera 2. Level setting, aperture data, etc. are recorded. Thus, in the optical disc 3, the history of each file recorded on the optical disc 3 can be confirmed based on the management data recorded in the area AR1B.

In the subsequent outer area AR1C, data for editing is recorded. Here, the editing data is recorded in a file format, and an editing list for editing each file recorded on the optical disc 3 is recorded. The edit list is formed by recording the data of the edit points set for each file and the reproduction order along with the transition mode (for example, cut edit, crossfade, etc.) by time code and address. Thus, the optical disc 3 can select a desired edit list and sequentially reproduce the recorded news recording contents according to the selected edit list.

The recording area AR1B for management data of digital video signals recorded on the optical disk 3 and the recording area AR1C for data for editing are recorded on one side of the optical disk 3.

On the other hand, an outer area AR2 is allocated to a user area, and a digital video signal and a digital audio signal are recorded. Here, the user area AR2 is concentrically zoned by prepits formed between the pregrooves to form 26 zones. In each zone, 19 sectors are allocated to the innermost zone per one round, and the outermost zone is 1 zone.
The number of sectors per circumference is sequentially increased, and 45 sectors are allocated per circumference in the outermost zone.

Further, the user area AR2 has a recording area divided concentrically, as shown partially enlarged by a reference sign A, irrespective of zoning by the sector.
A recording area for the digital video signal V1 is formed on the outer peripheral side of each area. Further, on the inner circumference side of each area, a recording area is formed for each of the digital audio signals A1 to A4 of four channels corresponding to the digital video signal on the outer circumference side. Thereby, in this optical disc 3,
For example, audio of the subject and surroundings (hereinafter referred to as environmental sound) at the time of imaging the subject, audio of commentary by an announcer, audio of commentary in various languages, background music, etc. can be recorded in correspondence with a digital video signal. Has been made.

FIG. 3 is a block diagram showing the television camera 2. The television camera 2 holds an optical disk 3 detachably, records a digital video signal on the optical disk 3, and adds a digital audio signal of an environmental sound accompanying the digital video signal, a digital audio signal of an announcer's voice, and the like. Record

That is, in the television camera 2,
The optical pickups 7A and 7B are held so as to face both surfaces of the optical disc 3, and the sled mechanism 8 moves the optical pickups 7A and 7B in the radial direction of the optical disc 3 in conjunction with each other under the control of the servo circuit 9. As a result, in the television camera 2, the optical pickups 7A and 7A
By moving B in the radial direction of the optical disc 3, the desired track can be accessed.

Further, the optical pickups 7A and 7B irradiate the optical disk 3 with a laser beam and receive the return light, whereby the signal level changes according to the tracking error amount, and the optical pickup 3 responds to the focus error amount. And outputs a focus error signal whose signal level changes in accordance with a wobble signal whose signal level changes in accordance with the meandering of the groove, and a reproduction signal RF whose signal level changes in accordance with the amount of return light.

Each of the optical pickups 7A and 7B outputs a monitor signal of the amount of laser beam whose signal level changes according to the amount of laser beam, and is controlled by the servo circuit 9 based on the signal level of the monitor signal. Drive signal S output from the recording signal processing circuit 11
According to R or the like, the light amount of the laser beam is intermittently started from the light amount at the time of reproduction to the optimum light amount for pit formation. Thus, the television camera 2 intermittently starts up the light amount of the laser beam and thermally records desired data on the unrecorded area of the optical disc 3.

At the time of this data recording, the optical pickup 7
A and 7B are sequentially displaced from the outer periphery to the inner periphery by the thread mechanism 8 to thermally record digital video signals and digital audio signals on the optical disk 3. Thus, in the television camera 2, when the optical disc 3 is driven to rotate under the condition of a constant angular velocity, the digital video signal and the digital audio signal are sequentially transmitted from the outer peripheral area where the data recorded at a high transfer rate can be reproduced. The information is recorded on the optical disk 3.

The servo circuit 9 performs tracking control and focus control of the optical pickups 7A and 7B based on the tracking error signal and the focus error signal, respectively. Further, the servo circuit 9 drives the spindle motor 10 so that the signal level of the wobble signal is shifted at a predetermined frequency.
Is driven to rotate under the condition of constant linear velocity.

Further, when the optical disk 3 is loaded into the television camera 2, the servo circuit 9 drives the thread mechanism 8 under the control of the system control circuit 13 to move the optical pickups 7A and 7B to the system data area of the optical disk 3. Let AR1 seek. Thus, in the television camera 2, various management data recorded in the system data area AR1 can be acquired in advance by the system control circuit 13. Conversely, when the power of the television camera 2 is turned off, when the optical disk 3 is ejected, or the like, the servo circuit 9 similarly drives the sled mechanism 8 to connect the optical pickups 7A and 7B to the system of the optical disk 3. The data area AR1 is sought, and management data can be additionally recorded in the system data area AR1 as necessary.

The camera unit 14 includes an optical system for capturing an image of a subject, a CCD solid-state image sensor for capturing an image of the subject obtained through the optical system, and a digital video signal by processing an output signal of the CCD solid-state image sensor. It is composed of a signal processing system that outputs V1. In these signal processes, the camera unit 14 controls the white balance and the white balance under the control of a control circuit arranged in the camera unit 14.
The gain, the level of the audio signal, the aperture, and the like are set to set imaging conditions, and the setting data DS based on the set conditions is notified to the system control circuit 13.
Further, the camera unit 14 has a digital video signal V1.
Is notified to the system control circuit 13.

The recording signal processing circuit 11 converts the digital video signal V1 output from the camera unit 14 into a recording signal SR together with the two-channel digital audio signals A1 and A2, and outputs the recording signal SR. Here, of these two-channel digital audio signals A1 and A2, one-channel digital audio signal A1 is
This is a stereo digital audio signal by a so-called front microphone, and is generally assigned an environmental sound.
The remaining one-channel digital audio signal A2
Is a digital audio signal by a so-called rear microphone, to which a commentary voice by an announcer is assigned, for example. Thus, the television camera 2 records two-channel digital audio signals among the four-channel digital audio signals A1 to A4 that can be recorded on the optical disc 3.

The reproduction signal processing circuit 15 processes the reproduction signal RF output from the optical pickups 7A and 7B, reproduces the digital video signal V1 and the digital audio signals A1 and A2, and outputs the reproduced digital video signal V1 and digital audio signals A1 and A2 to a viewfinder or an external device. I do. Thus, the television camera 2 can immediately monitor the imaging result as needed. On the other hand, the reproduction signal processing circuit 15
Optical pickup 7A immediately after the optical disk 3 is loaded
And 7B access the system data area AR1, reproduce the management data recorded in the system data area AR1 in place of the digital video signal V1 and the digital audio signals A1 and A2, and send it to the system control circuit 13. Output.

The system control circuit 13 comprises a microcomputer for controlling the recording / reproducing system of the television camera 2, and controls the operations of the servo circuit 9 and the reproduction signal processing circuit 15 when the optical disk 3 is loaded. , The management data recorded in the system data area AR1.

Further, when the recording button 17 is repeatedly pressed by the cameraman, the system control circuit 13
In response to this operation, the operations of the recording signal processing circuit 11 and the servo circuit 9 are switched, whereby the digital video signal V1, the digital audio signal A1,
A2 is recorded, and recording on the optical disc 3 is stopped.
At this time, the system control circuit 13 seeks the optical pickups 7A and 7B on the basis of the management data obtained from the system data area AR1, so that the digital video signal V1 and the digital audio signal A1 are recorded in the unrecorded area of the optical disk 3. , A2 are recorded. Further, at the time of starting the recording corresponding to the pressing operation of the recording button 17,
The time code and the address of the optical disk 3 at the end of the recording are temporarily stored in a built-in memory.

The system control circuit 13 is provided with an operator 19
, Data of the name of the photographer, data of identification of whether the file is an editable file by operation of the marker key 19A, camera unit 1
4 temporarily stores the setting data DS notified in the internal memory. The system control circuit 13 forms management data of each file recorded on the optical disk 3 based on the data temporarily stored in the built-in memory in this way, and when the optical disk 3 is ejected, through a drive circuit (not shown). These management data are added to the system data area of the optical disc 3.

When the cameraman operates a reproduction operation button or the like, the system control circuit 13 activates the operation of the reproduction signal processing circuit 15 so that the file recorded on the optical disk 3 can be monitored as needed. I do.

FIG. 4 is a block diagram showing the recording signal processing circuit 11. In the recording signal processing circuit 11, a video processing circuit 20 receives the digital video signal V1 output from the camera unit 14, corrects the signal level of the digital video signal V1, and removes unnecessary data such as a blanking period. And output.

The data compression circuit 21 sequentially compresses and outputs the digital video signal V1 output from the video processing circuit 20 in a format prescribed by the MPEG (Moving Picture Experts Group). The packing circuit 22 blocks the image data output from the data compression circuit 21 into predetermined data units and outputs the data.

The audio process circuit 23 corrects the signal levels of the digital audio signals A1 and A2 and outputs the corrected signals. The ECC circuit 24 adds an error correction code in a product code format to the audio data output from the audio process circuit 23 and the image data output from the packing circuit 22, and outputs the resultant data. At this time, in the recording signal processing circuit 11, the digital audio signals A1 and A2 and the image data are sequentially and alternately processed through a predetermined buffer memory, and as a result, as shown in FIG. Receives a continuous digital video signal V1, digital audio signals A1 and A2 (FIGS. 5A, 5B1 and 5B2), time-division multiplexes them by the ECC circuit 24, and outputs them. (FIG. 5C).

The memory 25 is a large-capacity buffer memory, temporarily stores the output data AV1 of the ECC circuit 24, and outputs the data in an array corresponding to the recording area described above with reference to FIG. That is, when the memory 25 outputs the image data V1 by a predetermined data amount, the memory 25 subsequently outputs the corresponding first channel digital audio signal A1, and then outputs the corresponding second channel digital audio signal A2 (FIG. 5). (D)). In this embodiment, the optical disk 3 stores 10
The digital video signal and the digital audio signal are sequentially and cyclically recorded in frame units, so that the concentric area described above with reference to FIG. 2 is formed.

The striping circuit 26 stores the memory 2
5 is output to the optical pickups 7A and 7B.
Are output after being separated into two systems of data corresponding to. The channel coding circuits 27A and 27B interleave the two-system data output from the striping circuit 26, and then modulate and output the data by a modulation method suitable for recording on the optical disc 3. Sectorize circuit 28
A and 28B add the data such as the synchronization pattern, preamble and postamble to the output data of the channel coding circuits 27A and 27B, respectively, and output them. The drive circuits 29A and 29B drive the optical pickups 7A and 7B in accordance with the output data of the sectorize circuits 28A and 28B, respectively, and intermittently raise the light amount of the laser beam.

Thus, in the television camera 2, the digital video signal V1 and the digital audio signals A1, A2 are recorded on the optical disk 3 at a data transfer rate of 33 [Mbps]. As for the management data, data output from the system control circuit 13 is input to the drive circuit 29B via a predetermined data processing circuit, and is thereby recorded on the optical disc 3.

FIG. 6 is a block diagram showing the reproduction signal processing circuit 15 of the television camera 2. In the reproduction signal processing circuit 15, the pre-processing circuits 30A and 30B
Optical pickup 7 by built-in equalizer circuit
After equalizing the waveforms of the reproduced signals RF output from A and 7B, they are binarized by a binarization circuit. Further, pre-processing circuit 3
The clocks 0A and 30B are reproduced by a built-in PLL circuit from a binarized signal obtained by binarization. Further, the preprocessing circuits 30A and 30B sequentially perform the analog-to-digital conversion processing on the reproduction signal RF using the clock, and output a digital reproduction signal obtained as a result.

PRML (Partial Response Maximum Like)
lihood) circuits 31A and 31B equalize the waveforms of the digital reproduction signals output from the preprocessing circuits 30A and 30B, respectively, and then decode the digital reproduction signals using a most redundant decoding circuit such as a Viterbi decoding circuit, thereby applying the PRML method. Then, the digital video signal and the digital audio signal recorded on the optical disk 3 are decoded.

The channel decoding circuits 32A, 3A
2B deinterleaves the output data of the PRML circuits 31A and 31B and outputs the data. Memory 33A
And 33B are provided in the channel decoding circuit 32.
A and 32B are temporarily stored and output in a predetermined order. That is, as shown in FIG. 7, the reproduction data AV3A and AV3B (FIG. 7A) reproduced from the optical disk 3 are temporarily stored in the order corresponding to the structure of the user data area AR2 in FIG. Correspondingly, the digital video signal V1 and the digital audio signals A1 and A2 are output so as to be continuous in a predetermined block unit (FIG. 7B).

The mixer (MIX) 34 has a memory 33
The two digital signals output from A and 33B are converted into one digital signal and output. The ECC circuit 35 receives the output data of the mixer 34, performs error correction processing using an error correction code added to the data, and outputs the data. The depacking circuit 36 receives the video data from the ECC circuit 35 and outputs the video data in the original arrangement.

The data decompression circuit 37 decompresses the output data of the depacking circuit 36 and outputs the data. The video processing circuit 38 converts the output data of the data decompression circuit 37 into a digital video signal V1 of a predetermined format. Output (FIG. 7 (C)). The audio process circuit 39 receives audio data from the ECC circuit 35,
This audio data is output as digital audio signals A1 and A2 in a predetermined format (FIG. 7 (D
1), (D2)). This allows the television camera 2 to check the results of the news gathering recorded on the optical disc 3 on the spot.

FIG. 8 is a plan view showing the viewer 4.
The viewer 4 carries the content together with the personal computer 5 to the news gathering site and edits the news gathering content recorded on the optical disc 3. This allows the editing system 1 to easily and quickly edit the content of the news gathering at the news gathering site.

Here, a display 40 comprising a liquid crystal display panel is disposed on the front of the viewer 4, and a display screen for editing is formed on the display 40. Viewer 4
Is a GUI (Graphical User
Interface) allows editing work to be performed, and allows the user to confirm the content of the interview and the editing result. In the viewer 4, built-in speakers 41L and 41R are arranged on both lower sides of the display 40 so that a digital audio signal recorded on the optical disk 3 and a sound as an edited result can be confirmed.

Further, the viewer 4 has a built-in speaker 41.
Below L and 41R, basic operation buttons 42 such as reproduction, fast forward, and reverse reproduction necessary for reproducing digital video signals and digital audio signals recorded on the optical disk 3 are arranged. Further, the viewer 4 includes a search dial 43 required for special playback such as shuttle playback and JOG playback, and an editing operation button (MARK required for editing processing).
An operation button, such as an IN button / MARKOUT button, for determining a required cut IN / OUT) 44, and a pointing device 45.

Here, the operation buttons 42 and 44 are constituted by pressing operation buttons, and the search dial 43 is constituted by a rotation operation button of a rotary encoder configuration. On the other hand, the pointing device 45 is configured by pressing operation buttons 45R and 45L corresponding to operation buttons for right and left clicks of a mouse, and an operation element 45XY including XY coordinate input means.

As shown in FIG. 9, which is a cross section taken along the line AA, the operation element 45XY is constructed so that the tip extends through the panel and extends downward. , For example, strain gauges 45XP, 45XN,... Thus, when the operation element 45XY is tilted with respect to the panel as shown by the arrow B, the tip thereof presses the pressing force detecting means as shown by the arrow C, whereby the pressing force can be detected. .

FIG. 10 is a block diagram showing the entire structure of the viewer 4. This viewer 4 is, for example, an SCS
I (Small Computer System Interface), Ethe
r, IEEE (The Institute of Electrical and Elec
toronics Engineers, Inc.) is connected to the personal computer 5 by 1394 or the like, reproduces the optical disk 3 in response to the operation of the operation button 42 or the like, and controls the personal computer 5, and edits the data created by the personal computer 5. List the system data area AR1
To record.

That is, the user interface (user IF) 50 detects the operation of the search dial 43, the basic operation buttons 42, the editing operation buttons 44, and the pointing device 45, and the system detects these operations via the local bus RBUS. The control 51 is notified.

The PC interface 52 is connected to the local bus RBUS and forms an interface with the personal computer 5. Various types of status data output from the system control 51, still images generated by the video decoder 53, digital A video signal and a digital audio signal are output to the personal computer 5, and various control commands and an edit list output from the personal computer 5 are notified to the system control 51.

The video decoder 53 switches its operation under the control of the system control 51,
Reproduction data output from the drive control 55A is input via the BUS, and the reproduction data is demodulated to demodulate a digital video signal and a digital audio signal. The demodulated digital video signal is displayed on the display 40, and the digital audio signal is output from the built-in speakers 41L and 41R. The video decoder 53 outputs the digital video signal and digital audio signal demodulated via the PC interface 52 to the personal computer 5.

At this time, the video decoder 53 intermittently inputs the reproduced data from the drive control 55A and stores the data in a built-in memory. The video decoder 53 sequentially processes the reproduced data stored in the memory to obtain a continuous digital video signal and digital audio signal. Demodulate the signal.

The video decoder 53 converts one frame of image data specified by the system control 51 from the reproduced digital video signal into a local bus RBUS.
Is output to the PC interface 52 via. Thus, the viewer 4 outputs a still image such as an IN point and an OUT point to the personal computer 5. The digital video signal and digital audio signal reproduced under the control of the system control 51 are transmitted to the interface 5.
4 is output.

The interface 54 is configured so that it can be mounted on the viewer 4 as required, converts the digital video signal and digital audio signal input via the local bus RBUS into serial data SDDI of a predetermined format, Output to device. Thus, the viewer 4 can record the editing result and the news gathering result on a video tape recorder or the like as necessary.

Drive 55 and drive control 5
5A reproduces the optical disk under the control of the system control 51 and outputs reproduced data. Note that this reproduction data corresponds to the output data of the reproduction-system channel decoding circuits 32A and 32B described above with reference to FIG.

The system control 51 is constituted by a microcomputer for controlling the operation of the viewer 4. When a basic operation button 42 is operated via the user interface 50, the drive is driven in response to the operation of the operation button 42. 55, drive control 55
A: The operation of the video decoder 53 is switched so that the digital video signal and the digital audio signal recorded on the optical disk 3 can be monitored. At this time, the system control 51 selectively reproduces the digital video signal and digital audio signal desired by the operator based on the management data of each file. As a result, for example, reproduction of a file determined to be inappropriate for editing by a cameraman is omitted, and the efficiency of editing work is improved.

Further, in reproducing the optical disk 3,
When the search dial 43 is operated, the reproduction speed is variably controlled in response to the operation of the search dial 43, and the reproduction result of the digital video signal and the digital audio signal is displayed by frame advance. When the operator operates the edit operation button 44 in a state where a predetermined scene is selected and displayed on the display 40 in this way, an in point, an out point, and the like are set in response to the operation. Further, the video decoder 53 instructs the video decoder 53 to transfer the image data of the frame set at the IN point and the OUT point to the personal computer 5.

The system control 51 similarly sets an in-point and an out-point for the audio signal recorded on the optical disc 3, and a predetermined range near the in-point and the out-point, and a digital audio signal selected by the operator. Instructing the video decoder 53 to transfer the signal to the personal computer 5.

Further, the system control 51 notifies the personal computer 5 of the time code such as the in point and the out point set in this way. In addition, in response to a control command output from the personal computer 5, the drive 55 and the drive control 55A are controlled, so that the editing result can be monitored according to the editing list EDL created by the personal computer 5.

In controlling the drive 55 and the drive control 55A, the system control 51
Indicates that the loading of the optical disk 3 is performed by the drive control 55A.
Instructs the drive control 55A to reproduce the system data area AR1, and acquires and holds the management data recorded in the system data area AR1. Further, from the obtained management data, a serial number common to the optical disc 3 and unique identification data assigned to the optical disc 3 are notified to the personal computer 5, so that the personal computer 5 uses the identification data as a so-called roll number. Make it available for editing.

When the optical disk 3 is accessed by operating the basic operation buttons 42, the editing operation buttons 44, and the search dial 43, the system control 51 performs the operations based on the management data of each file thus obtained. The file intended by the operator is selectively accessed, thereby improving the editing efficiency. These are cases where the optical disk 3 is accessed except for files determined to be unusable for editing based on the identification data set by the cameraman.

The system control 51 notifies the personal computer 5 of the management data of each file recorded on the optical disc 3, the file name in which the IN and OUT points are set, and the time code of the IN and OUT points. This allows the personal computer 5 to create an edit list using these data. The data of the optimum light amount reproduced from the system data area is used for controlling the light amount of the laser beam in the drive 55.

The viewer 4 is configured so that a drive 55 and a drive control 55A can be added as necessary.
When the drive 55 and the drive control 55A are added in this way, the same processing is executed for the added drive 55 and the drive control 55A.

On the other hand, among the editing operation buttons 44,
When the preview operation button is operated, the operation is notified to the personal computer 5, and the drive 55 and the drive control 55A are controlled in accordance with the edit list sent from the personal computer 5 in response to the operation. As a result, the system control 51 displays the result of the preview on the display 40 and the built-in speaker 4.
1L and 41R, and also on the personal computer 5 side.

When the pointing device 45 is operated, the system control 51 notifies the personal computer 5 of the operation data. Thus, the system control 51 can execute an editing operation using a GUI (Graphical User Interface) on the personal computer 5 side by operating the pointing device 45.

Further, when the editing operation is completed, the system control 51 obtains the edit list EDL from the personal computer 5 and controls the operation of the drive 55 and the drive control 55A to control the operation of the edit list EDL.
Is recorded in the system data area of the optical disc 3. In addition, the system control 51 monitors the operation of the drive control 55A and the like, and notifies the personal computer 5 of various statuses as necessary.

FIG. 11 is a block diagram showing the drive 55 and the drive control 55A together with the main peripheral components. In the viewer 4, the drive 55 holds two sets of optical pickups 60A1, 60A2, 60B1, and 60B2 so as to face both sides of the optical disc 3.

These optical pickups 60A1 to 60B2
Are held by the thread mechanisms 61A and 61B so as to be movable in the radial direction of the optical disc 3 while the optical pickups 60A1 to 60B2 of each set are held to face each other with the optical disc 3 interposed therebetween. As a result, the drive 55 has a pair of optical pickups 60A1, 60A.
B1 is assigned to the reproduction of the digital video signal, and the remaining 1
The set of optical pickups 60A2 and 60B2 is assigned to the reproduction of the digital audio signal, so that the waiting time can be sufficiently reduced and the digital video signal and the digital audio signal recorded by dividing the area can be reproduced. Also, digital video signals and digital audio signals recorded at different places and times can be reproduced simultaneously and in parallel.

Further, in the drive 55, the spindle motor 63 drives the optical disk 3 to rotate under the condition of a constant angular velocity under the control of a spindle servo circuit (not shown). Here, the rotation speed of the optical disk 3 is set to be higher than the rotation speed at the time of accessing the system data area AR1 under the condition of a constant linear velocity, and specifically, 50 [Mbps] data at the innermost circumference of the user area. The digital video signal and the digital audio signal are set to be reproduced at a data transfer rate of 120 [Mbps] at the outermost circumference according to the transfer rate. As a result, the drive 55 increases the data transfer speed of the optical disk 3 on which the digital video signal and the digital audio signal are sequentially recorded from the outer peripheral side of the television camera 2 as the preferentially recorded outer peripheral area increases. Video and digital audio signals can be reproduced. When an edit list is recorded in the system data area, the spindle motor 63 drives the optical disc 3 to rotate under the condition that the linear velocity specified for the optical disc 3 is constant.

The servo circuits 64A and 64B perform tracking control and focus control on the optical pickups 60A1 and 60B2, and also perform thread control on the optical pickups 60A1 and 60B2 via thread mechanisms 61A and 61B.

The signal processing circuit 65 includes an optical pickup 60
It processes the reproduced signals output from A1 to 60B2, outputs reproduced data corresponding to digital video signals and digital audio signals to the video decoder 53, and outputs reproduced data DAR1 in the system data area AR1 to the system control 51. The signal processing circuit 65
Drives the optical pickup 60B2 with the edit list EDL output from the system control 51, and records the edit list EDL in the system data area AR1 of the optical disc 3.

In reproducing the data recorded on the optical disk 3 by rotating the optical disk 3 so that the data transfer speed increases toward the outer periphery in this manner, the servo circuit 6
The optical pickups 4A and 64B are controlled by the drive control 55A in accordance with the data amount of the reproduction data held in the video decoder 53 at a predetermined timing.
A1 to 60B2 are track-jumped to the outer peripheral side, whereby the optical disc 3 is intermittently reproduced. The signal processing circuit 65 intermittently processes the reproduction signals output from the optical pickups 60A1 to 60B2 in conjunction with the control of the optical pickups 60A1 to 60B2 by the servo circuits 64A and 64B.

Thus, in the viewer 4, the optical disc 3 is driven to rotate under the condition that the angular velocity is constant, so that the digital video signal and the digital audio signal can be continuously reproduced. In addition, by effectively utilizing the waiting time generated by intermittently reproducing the digital video signal and the digital audio signal during the seek time, even if each file recorded on the optical disc 3 is discretely accessed according to the edit list. The digital video signal and the digital audio signal can be successively reproduced. This allows the editing system 1 to process digital video signals and digital audio signals using two optical disks from the imaging device to the editing process.

FIG. 12 is a block diagram showing the personal computer 5. In the personal computer 5, the interface 70 receives the management data DAR 1, the time code of the IN point and the OUT point,
The still image data is input and output to the PCI bus PBUS. The interface 70 is a PCI bus PB
Various control commands and the like input via the US are output to the viewer 4.

A hard disk drive (HDD) 71 records an operating system, application programs, and the like necessary for the operation of the personal computer 5. Further, it holds the management data, still image data, and time code transferred from the viewer 4 and outputs them to the central processing unit (CPU) 72 and the video board 76 as necessary. Further, it holds the edit list EDL created by the central processing unit 72 and outputs the edit list EDL to the viewer 4 via the interface 70.

The keyboard interface 73 detects the operation of the keyboard 75 and sends the detection result to the PCI bus P.
Output to BUS. The video board 76 displays a predetermined menu screen on the display 77 together with the still image transmitted from the viewer 4 under the control of the central processing unit 72. Similarly, a preview image is displayed.

The central processing unit 72 includes the viewer 4
When the operation of the personal computer 5 is started, a predetermined operating system is driven, and at this time, various drivers for driving the viewer 4 and the like are incorporated.
Further, following the operating system, an application program for editing processing is activated, the display screen of the display 77 is switched according to the application program, and a control command is issued to the viewer 4 as needed. Further, the central processing unit 72
An edit list EDL is created in the hard disk device 71 by the edit operation. When the edit operation is completed, a control command is transmitted to the hard disk device 71 and the viewer 4 so that the edit list EDL is transferred to the viewer 4 and recorded on the optical disk 3. Issue.

In this series of processing, the central processing unit 72 executes an API (Application Programming Interface).
e), according to the operation data of the pointing device 45 output from the viewer 4, the display 77
A predetermined cursor (pointer) is moved above, and various menus can be selected and operated by the cursor.

FIG. 13 shows the personal computer 5.
13 is a plan view of the personal computer 5 showing an editing screen displayed on the display 77 of the personal computer 5. FIG. The central processing unit 72 displays a predetermined menu screen when the application program used for the editing work is started, and the operator selects the simple editing by the stamp picture on this menu screen by operating the pointing device 45 in the viewer 4. Then, the display screen is formed by executing the event registered in the menu of the simple editing. Further, by executing an event registered in a window forming the display screen, a series of editing work is executed.

When an editing menu other than the simple editing by the stamp picture is selected, the central processing unit 72 similarly displays the management data and the like notified from the viewer 4 on a predetermined display screen as necessary. With these displays, an edit list is created in response to an operator's selection operation.

If a menu for selecting a picture is selected at this time, the central processing unit 72 displays a predetermined display screen and sends various control commands to the optical disc 3 in response to the operation of the operator on this display screen. This allows the contents of the news gathering to be confirmed by operating the GUI displayed on the personal computer 5 side. Further, the central processing unit 72 is provided in FIG.
The setting of the in-point and the out-point is received in the same manner as the setting of the in-point and the out-point in the viewer 4 described above, whereby each of the information recorded on the optical disc 3 is also operated by operating the GUI displayed on the personal computer 5 side. The file to be edited can be selected in advance by using the file management data.

In the simple editing based on the stamp picture, the central processing unit 72 sets the stamp picture display window W1 formed on the upper part of the display screen.
Then, the still images at the in point selected in the viewer 4 are sequentially arranged. Further, the central processing unit 72 displays a simple edit window W2 below the stamp picture display window W1. Here, the central processing unit 72
Forms the display frames U1 to U4 for arranging the still images displayed in the stamp picture display window W1 in the simple edit window W2, and operates the pointing device 45 to display the still images displayed in the stamp picture display window W1. Either is selected and the display frames U1 to U4
, The corresponding still images are sequentially arranged in these display frames U1 to U4. As a result, the central processing unit 72 sets the simple edit window W2
An edit list EDL is created so that each cut selected by the viewer 4 is successively reproduced in the arrangement order of.

The central processing unit 72 arranges a menu for preview, search, reproduction in the forward direction, and stop in the lower part of the simple edit window W2. When these menus are clicked by the pointing device 45, the central processing unit 72 executes an event registered in each menu and controls the entire operation. That is, when the preview menu is clicked, the central processing unit 72 issues a playback command to the viewer 4 in accordance with the edit list EDL held in the hard disk device 71, thereby executing the preview process.

When the search menu is clicked, a file in which identification data is set by the cameraman based on the management data recorded in the hard disk device 71 (a file determined to be unsuitable for editing). ), And when the operator selects the still image displayed in the stamp picture display window W1, the viewer 4 is instructed to reproduce the still image file by fast forward.

When the menu for reproduction in the forward direction is clicked, the viewer 4 is similarly instructed to the normal reproduction in the forward direction for each file recorded on the optical disk 3 or for the file selected by the operator. I do.

When the stop menu is clicked,
An instruction to stop reproduction is output to the viewer 4.

Similarly, when the edit menu of the audio signal is selected on the initial screen, the central processing unit 72 displays a similar GUI, thereby creating an edit list for the audio signal.

When another editing menu is selected, the central processing unit 72 displays the roll number, which is the identification number of the optical disk 3, and the management data of each file, and also selects each file by this display. An edit list can be created by setting an in point, an out point, and the like. Thus, the personal computer 5 can execute the editing operation with reference to the information at the time of shooting added to each file.

(1-2) Operation of First Embodiment In the above configuration, the editing system 1 (FIG. 1)
In the television camera 2, a digital video signal and a digital audio signal, which are the content of the news gathering, are recorded on the optical disc 3. Further, the optical disc 3 is loaded on the viewer 4 and reproduced, the result of the report is confirmed, and an edit list created from the result of the report is recorded on the optical disc 3.

Thus, the contents of the news gathering and the edit list in which the news gathering has been edited can be centrally managed on one recording medium, and the optical disk 3 is brought back from the site of the news gathering and played back sequentially according to the editing list. The content of the news coverage can be promptly broadcast. In the editing operation, a desired cut can be selected and the editing operation can be executed simply by loading the optical disc 3 into the viewer 4, thereby greatly reducing the time required for editing. You. Further, even after editing, the work of re-recording data on a recording medium such as a magnetic tape is omitted.

Further, in this optical disc, identification data and the like as to whether or not the content of the news gathering is suitable for editing are recorded as management data, and accordingly, during the editing work, the data is recorded based on these management data. The digital video signal and the digital audio signal are selectively reproduced to improve the editing work efficiency.

That is, in the television camera 2 (FIG. 4), the digital video signal V1 output from the camera unit 14 is pre-processed by the video processing circuit 20, then data is compressed by the data compression circuit 21, and the subsequent packing is performed. It is blocked by the circuit 22.
Further, after an error correction code is added together with the digital video signal by the following ECC circuit 24,
The data is converted by the striping circuit 26 into a data stream of two systems. Further, after these two data strings are modulated by the channel coding circuits 27A and 27B, they are recorded on the optical disk 3 via the sectorizing circuits 28A and 28B and the driving circuits 29A and 29B under the condition of a constant linear velocity.

At this time, the digital video signal and digital audio signal (FIG. 3) are transmitted by a pair of optical pickups 7A and 7B arranged on both sides of the optical disk 3.
Recording is performed simultaneously on both surfaces of the optical disk 3 that is driven to rotate under the condition of a constant linear velocity. Also, when viewed from each surface side, pre-grooves are sequentially recorded from the outer circumference side to the optical disc 3 in which the pregrooves are formed in the opposite direction from the outer circumference side to the inner circumference side. Thereby, in the optical disk 3, the optical disk 3
When the optical disc 3 is rotated and driven under the condition of a constant angular velocity, the digital video signal and the digital audio signal are recorded on the optical disc 3 sequentially from the outer peripheral area where data can be reproduced at a high transfer rate. You.

Also, the digital video signal V1 is output from the outer peripheral side of the optical disk 3 for a predetermined period by inputting / outputting the memory 25.
Are recorded, a first digital audio signal A1, a second digital audio signal A2, a third digital audio signal A3, and a fourth digital audio signal A4 are sequentially recorded. Video signal V
1. The recording of the digital audio signals A1 to A4 is sequentially and cyclically repeated (FIGS. 2 and 5).

When the recording on the optical disk 3 is completed (FIG. 3), the recording start time detected by the recording button 17, the operator 19, and the marker key 19A, the time code at the end of the recording, the address of the optical disk 3, For each file recorded on the optical disk 3 together with the setting data DS notified from the camera unit 14, the date and time at which the image was captured, the location, the data of the cameraman's name, and the identification data indicating whether or not the file is an editable file are stored in the optical disk 3. It is recorded in the second area AR1B of the system data area AR1 allocated on the peripheral side (FIG. 2).

The digital video signal and the digital audio signal recorded on the optical disk 3 as described above are the reproduction signals RF obtained from the optical pickups 7A and 7B in the television camera 2 (FIGS. 3, 6 and 7). After being corrected by the pre-processing circuits 30A and 30B, they are decoded via the PRML circuits 31A and 31B and the channel decoding circuits 32A and 32B, and input to the memories 33A and 33B. This memory 3
3A and 33B, the digital video signal V1 and the digital audio signal A1 to A4 are sequentially and cyclically input in the order of the digital video signal V1 and the digital audio signals A1 to A4 in accordance with the allocation to the information recording surface described above with reference to FIG. After the signal is changed to a continuous array in a predetermined block unit, the signal is returned to the data stream of one system by the subsequent mixer 34.

After the ECC circuit 35 performs an error correction process, the digital audio signal is demodulated by the audio process circuit 39 and output. The digital video signal is returned to the original arrangement by the depacking circuit 36, data is expanded by the data expansion circuit 37, demodulated by the video processing circuit 38, and output. As a result, the news gathering content recorded on the optical disc 3 is reproduced by the television camera 2 as necessary, and the news gathering content is confirmed.

When the coverage by the television camera 2 is completed at the coverage site in this way, the optical disc 3 on which the content of the coverage is recorded is loaded into the viewer 4, and editing work is executed by the viewer 4 and the personal computer 5. (FIG. 8). Here, in the viewer 4 and the personal computer 5, when the power is turned on, a predetermined operating system is started in the personal computer 5, and an application program for editing processing is started following this operating system (FIG. 12). Further, a predetermined menu screen is displayed on the display 77 of the personal computer 5 by the application program.

When the optical disk 3 is loaded into the viewer 4 with the application program started up or only the viewer 4 is turned on, the optical disk 3 is further loaded into the viewer 4 and the viewer 4 is loaded. When the power supply of the optical disk 3 is turned on, the optical disk 3 includes two sets of optical pickups 60A1, 60A2, 60B1, and 60B that are held to face each other with the optical disk 3 interposed therebetween.
One set of optical pickups 60A1, 60A2 of B2
As a result, the management data of each file recorded in the system data area AR1 is reproduced, the management data is held in the system control 51, and output to the personal computer 5, and the hard disk device 71 ( 12).

In this state, when the operator operates the basic operation buttons 42 arranged on the viewer 4 (FIG. 11),
In response to this operation, a pair of optical pickups 60A1, 60A
0B1 accesses the area allocated to the digital video signal, and the remaining pair of optical pickups 60A2,
60B2 accesses the area assigned to the digital audio signal, and
0B2, the reproduction signal RF output from the signal processing circuit 6
5, the resulting reproduced data is processed by the video decoder 53 to reproduce a digital video signal and a digital audio signal.
Further, the reproduced digital video signal and digital audio signal are output from the display 40 and the built-in speakers 41L and 41R. This allows the viewer 4 to check the contents of the coverage by the television camera 2.

The operation data of the pointing device 45 in the viewer 4 is notified to the personal computer 5, and the display 77 is operated in response to the operation data.
When a predetermined menu is selected by operating the cursor, a display screen for confirming the content recorded on the optical disc 3 is displayed on the display 77. Further, the operation on the display screen using the pointing device 45 causes the personal computer 5 to operate.
The central processing unit 72 issues various control commands to the viewer 4, and in response to the control commands, the optical disc 3 is reproduced in the same manner as when the basic operation buttons 44 on the viewer 4 are operated, thereby allowing the personal The content of the news gathering is also confirmed by operating the GUI on the computer 5 side.

At this time, the system control 51 of the viewer 4 and the central processing unit 72 of the personal computer 5 use the files determined to be editable by the cameraman based on the management data of each file recorded in the system data area of the optical disk 3. The content is selectively reproduced, so that the content of the news gathering can be easily and reliably determined without monitoring the useless content of the news gathering.

In the viewer 4, the digital video signal is reproduced by one of the two optical pickups 60A1, 60A2, 60B1, and 60B2 of the two optical pickups 60A1, 60A2, 60B1, and 60B2. The digital audio signal is reproduced, whereby the information recording surface is divided concentrically and the digital video signal and the digital audio signal corresponding to the digital audio signal corresponding to the digital audio signal corresponding to the digital audio signal corresponding to the digital audio signal corresponding to the desired digital video signal are extremely short. The signal is reproduced.

When the contents of the news gathering recorded on the optical disk 3 are confirmed in this way and the operator operates the edit operation button 44 arranged on the viewer 4 (FIG. 11), the in-point and the out-point are responded to this operation. Is set, and the cut to be edited is selected. In addition, a predetermined menu is selected on the personal computer 5 side, and in response to this selection, on the display screen displayed on the display 77 of the personal computer 5, an operation using the pointing device 45 is also performed. Is selected. Similarly, for the digital audio signal, the cut to be edited is selected by the operation of the viewer 4 or the operation of the personal computer 5.

When a cut is selected for a digital video signal and a digital audio signal by operating the personal computer 5, management data of each file is displayed as necessary. To effectively use the management data of each file to improve the efficiency of editing work.

After the cut to be edited is selected in this way, the display 77 of the personal computer 5 is displayed.
When the simple edit by the stamp picture is selected above (FIG. 13), the still image of each cut selected in the previous stage is displayed in a predetermined window W1, and the viewer 4
By selectively dragging and dropping (arrow E) these still images by operating the pointing device 45 arranged in the, the cuts are arranged in an order desired by the operator. Similarly, for digital audio signals, cuts selected in advance are arranged in an order desired by the operator. Further, an edit list is created based on this arrangement and held in the hard disk device 71.

In this state, when the operator selects the preview menu, a control command is issued from the personal computer 5 to the viewer 4 in the reproduction order according to the edit list, and the optical disk 3 is reproduced in the edit order. , 77, and the built-in speakers 41L, 41R, the editing result is confirmed.

In the reproduction of the optical disk 3 by the viewer 4, the optical disk 3 is driven to rotate at a constant angular velocity higher than the rotational velocity when accessing the system data area AR1 under the constant linear velocity. Thus, the digital video signal and the digital audio signal are intermittently reproduced, and the intermittently reproduced digital video signal and digital audio signal are output as continuous digital signals via the buffer memory.

Thus, the waiting time generated by intermittently reproducing the digital video signal and digital audio signal is assigned to the seek time of the optical pickups 60A1 to 60B2, and the cuts discretely selected on the optical disc 3 are set. Can be reproduced by continuous video and audio. In addition, since the rotation is driven under the condition that the angular velocity is constant, the time required for switching the rotation speed can be omitted, so that each of the cuts discretely selected on the optical disc 3 can be reproduced by continuous video and audio. Can be.

At this time, a pair of optical pickups 60A1 and 60A2, 60B1 and 60B2 are assigned to the digital video signal and the digital audio signal, respectively. A desired editing result can be obtained even when a file is reproduced and a file on the inner peripheral side is reproduced by the optical pickups 60A2 and 60B2 for digital audio signals, and a digital video signal and a digital audio signal of different files are combined. it can.

Further, in these cases, the recording area is divided by the digital video signal and the digital audio signal on the optical disc 3, so that each of the optical pickups 60A1 to 60B2 multiplexes the digital video signal and the digital audio signal in a time division multiplex manner. Digital video signal and digital audio signal, respectively (compared to the case where video data and audio data compressed by, for example, a format specified by MPEG are recorded in the time series as they are). Can be efficiently reproduced.

That is, the reproduction signal RF output from the digital video signal optical pickups 60A1 and 60B1 can be processed to reproduce only the digital video signal, and the digital audio signal output from the optical pickups 60A2 and 60B2. Playback signal R
By processing F, only the digital audio signal can be reproduced. As a result, in the reproduction system of the viewer 4, the selective processing of the reproduction signal in the case of time-division multiplexing can be omitted, and the digital video signal and the digital audio signal can be reproduced by simple processing.

Incidentally, when reproducing a digital video signal from an optical disc on which a 30 [Mbps] digital video signal and a 3 [Mbps] digital audio signal are time-division multiplexed and recorded, the digital video signal is reproduced at a data rate of 33 [Mbps]. The effective data is actually 30 [Mbps] / 33 [Mbps], and apparently the recording / reproducing ability is reduced to about 91 [%]. In this case, the recording / reproducing ability of the digital audio signal is reduced to about 9%. However, if the digital video signal reproduction system and the digital audio signal reproduction system are made independent and the recording areas of the digital video signal and the digital audio signal are separated from each other as in this embodiment, the recording / reproducing capability is reduced. It can be effectively avoided.

When the television camera 2 is driven to rotate under such a condition that the angular velocity is constant, the digital video signal and the digital audio signal are sequentially transmitted from the outer peripheral area where the data recorded at a high transfer rate can be reproduced. Is recorded so that even if the optical pickup is sought, a sufficient free time is ensured and continuous digital video signals and digital audio signals can be reproduced.

That is, when a television camera using a magnetic tape is used for reporting, the recording image time is generally 2 hours.
A magnetic tape of about 0 minutes is used. In particular, at news gathering sites, it is rare to record the contents of an interview until there is no unrecorded area on this type of recording medium.
Many unrecorded areas often occur. Thus, even when the content of the news gathering is recorded using the optical disc 3, it is considered that the news gathering is often completed with the unrecorded area left on the optical disc 3.

In such a case, if the digital video signal and the digital audio signal are sequentially recorded from the outer peripheral area from which the data recorded at the high transfer rate can be reproduced, even if the seek is frequently repeated, the inner peripheral area is recorded. Compared with the case where the digital video signal and the digital audio signal are recorded from the side, the digital video signal and the digital audio signal can be reproduced without interruption with a sufficient time margin.

When the operator who has confirmed the editing result by the preview in this way changes the in point and the out point of each cut again, the viewer 4 and the personal computer 5 respond to the operation of the operation buttons and the like in response to the operation of the operation buttons and the like. Play the desired file,
A change such as an out point is received, and a preview process is further performed. When the final edit list is determined by these, a file name is added to the edit list held in the hard disk device 71 and transferred to the viewer 4, and the optical disc 3 is obtained by switching the condition of the rotational drive to the condition of constant linear velocity. Is recorded in the system data area.

At the news gathering site, the optical disk 3 is ejected from the viewer 4 and brought back to the broadcasting station. At the broadcasting station, the optical disk 3 is transferred to the optical disk 3 according to the edit list recorded on the optical disk 3 in the same manner as in the preview in the viewer 4. The recorded coverage can be reproduced and used for broadcasting. Alternatively, the viewer 4 may transmit the desired information to the optical disk 3 according to the edit list via a desired communication line.
Can be transmitted to a broadcasting station, and the results can be used for broadcasting.

In the series of processes, the viewer 4 reproduces the optical disk 3 in response to the operation of the operation buttons and the control command from the personal computer 5,
Further, the editing work can be executed by a simple processing procedure of merely recording the editing list. On the other hand, the entire operation of the personal computer 5 is controlled by an application program built on a commercially available operation system. As a result, in the editing system, the processing program can be easily formed on the viewer 4 and the personal computer 5 side, and the version can be upgraded. In addition, the personal computer 5 can be appropriately selected as needed to improve the usability of the operator.

Also, as described above, the personal computer 5
On the premise that the personal computer 5 is connected to the viewer 4 and used, simple editing work is performed by operating the GUI displayed on the display 77 by the pointing device 45 arranged in the viewer 4. . As a result, an editing operation can be easily performed even in a small environment where a pointing device such as a mouse cannot be operated. In other words, at news gathering sites, a series of equipment is often mounted on a vehicle that can make a small turn and move, and in such a vehicle, there is a case where there is not enough space to operate a mouse or the like. However, in this embodiment, if only a space for arranging the viewer 4 and the personal computer 5 is secured, editing processing can be easily performed.

(1-3) Effects of the First Embodiment According to the above configuration, the optical disc 3 on which the digital video signal and the digital audio signal are recorded in the television camera 2 under the condition of the constant linear velocity is edited by the editing apparatus. When the viewer 4 is rotated and driven under the condition of a constant angular velocity, the optical disk 3 can be discretely accessed to reproduce a continuous digital video signal and digital audio signal. As a result, during the period from the time of coverage by the television camera 2 to the time of editing by the viewer 4, the coverage result can be recorded and edited using the common disk-shaped recording medium, which is the optical disk 3, and the content of the coverage can be quickly edited and broadcast stations In this way, it is possible to process the news gathering result much more efficiently than in the past.

Further, in the reproduction system from the optical pickup to the signal processing, the digital audio signal reproduction system can be sought independently of the digital video signal reproduction system. Digital audio signals can be easily combined and edited to check the edited result.

Further, since the recording area is divided into concentric circles to record the digital video signal and the digital audio signal, the digital video signal and the digital audio signal are respectively reproduced by the independent reproduction systems, thereby improving the efficiency. A digital video signal can be reproduced.

(2) Second Embodiment FIG. 14 is a plan view showing an editing system according to a second embodiment of the present invention. In the editing system 81, the contents of the news gathering recorded on the optical disk 3 are edited by a viewer 84. In the editing system 81 according to the second embodiment, the editing system 1 according to the first embodiment is used.
The same configurations as those described above are denoted by the corresponding reference numerals, and redundant description will be omitted.

FIG. 15 is a block diagram showing the viewer 84. As shown in FIG. The viewer 84 is formed by adding a CPU board 85 and a video board 86 to the configuration of the viewer 4 according to the first embodiment. That is, the CPU board 85 has a central processing unit, a read-only memory (ROM) storing an operating system and application programs of the central processing unit, and a random access memory forming a work area of the central processing unit. 12 performs the function of the personal computer 5 described above.

The video board 86 is provided with the CPU board 8
5, the playback image, the still image,
An editing screen or the like is displayed on the display 40. In response to this, the video decoder 53 stops direct driving of the display 40 by the demodulated digital video signal, and outputs the demodulated digital video signal to the video board 86.

According to the configuration shown in FIGS. 15 and 16, the editing function by the personal computer 5 is provided by the viewer 8.
4, the optical disc 3 can be edited by the viewer 84 alone. Thereby, at the news gathering site, for example, the editing work can be executed by placing the viewer 84 on the knee, and the configuration of the entire system can be simplified.

Further, since there is no need to connect to a personal computer, it is possible to effectively avoid a malfunction or the like due to compatibility with a personal computer.

(3) Third Embodiment FIG. 16 is a plan view showing an editing system according to a third embodiment of the present invention. In the editing system 91, the contents of the news gathering recorded on the optical disc 3 are edited by a viewer 94 connected to a personal computer 95. In the editing system 91 according to the third embodiment,
The same components as those of the editing system 1 according to the first embodiment are denoted by the corresponding reference numerals, and redundant description will be omitted.

In this viewer 94, only the search dial 43 and the basic operation buttons 42 are arranged on the operation panel.

FIG. 17 is a block diagram showing the viewer 94. As shown in FIG. The viewer 94 notifies the system control 51 of the operation of the search dial 43 and the basic operation buttons 42 by the user interface 50, so that the viewer 94 alone can simply confirm the contents of the news gathering recorded on the optical disc 3. ing. FIG. 18 is a block diagram showing the personal computer 95. The personal computer 95 is connected to the keyboard 7 via the mouse / keyboard interface 97.
5 and the mouse 96 are configured to be detected,
By operating the keyboard 75 and the mouse 96, a still image displayed on the viewer 94 can be set as an in point and an out point. The editing target selected in this manner is edited by the GUI operation described above with reference to FIG. 13 to create an editing list, and the viewer 94 is instructed to record the editing list.
Thus, in this editing system, the structure of the viewer 84 is simplified, and the mouse 96 of the personal computer 95 can be used as a pointing device.

According to the configurations shown in FIGS. 16 to 18, the configuration of the viewer can be further simplified by using a mouse as a pointing device in a personal computer.

(4) Fourth Embodiment FIG. 19 is a plan view showing an editing system according to a fourth embodiment of the present invention. In this editing system 101,
The editing work is executed by the viewer 104 alone, and the editing result and the coverage are confirmed on the display 106. In the editing system 101 according to the fourth embodiment, the editing system 1 according to the first and second embodiments is used.
And 81 have the same reference characters allotted, and their description will not be repeated.

Here, the viewer 104 includes a search dial 43, basic operation buttons 42, and an edit operation button 44.
Is arranged on the operation panel, and a mouse 96 is connected as a pointing device.

FIG. 20 is a block diagram showing the overall structure of the viewer 104. As shown in FIG. The viewer 104 detects an operation of the mouse 96 in addition to an operation of another operation button by the user interface 50. Further CP
The central processing unit mounted on the U-board 85 executes a predetermined application program recorded in the read-only memory, executes a series of editing operations, and displays the demodulation result of the video decoder 53 on the display 106 by the video board 86. I do.

According to the configuration shown in FIG. 19 and FIG. 20, even when a mouse is used as a pointing device in the case where the viewer can be edited by itself, the same configuration as in the above-described second embodiment is used. The effect can be obtained. In addition, by using a mouse as a pointing device, the configuration of the viewer can be generalized, and the maintainability can be improved accordingly.

(5) Other Embodiments In the above-described first embodiment and the like, the case where the pointing device serving as the pressing force detecting means is arranged on the operation panel of the viewer has been described. The touch panel 145XY as shown in FIG.
A pointing device using a trackball 146XY as shown in FIG. 22 may be used.

In the above-described embodiment, a case has been described in which a digital video signal is edited by so-called cut editing. However, the present invention is not limited to this and can be widely applied to various editing operations.

Further, in the above-described embodiment, a case has been described where a 4-channel digital audio signal is recorded with respect to a digital video signal. However, the present invention is not limited to this. The number can be chosen differently.

In the above-described embodiment, the case where the digital video signal and the digital audio signal are recorded from the outer peripheral side of the optical disk has been described. However, the present invention is not limited to this, and the present invention is applicable to a case where a sufficient seek time can be secured. May be recorded from the inner circumference side.

Further, in the above-described embodiment, the case where the digital video signal and the digital audio signal are recorded under the condition that the linear velocity is constant has been described. However, the present invention is not limited to this. Can be widely applied.

In the above-described embodiment, the case has been described where the optical disk is accessed by one set of optical pickup in the television camera and by two sets of optical pickup in the viewer. However, the present invention is not limited to this. However, if a transfer rate sufficient for practical use can be ensured, the optical disc may be accessed by one optical pickup arranged on one side in a television camera and by two optical pickups arranged on one side in a viewer.

In the above-described embodiment, the case where the personal computer and the viewer are connected by one interface has been described. However, the present invention is not limited to this. For example, an interface dedicated to digital video signals and digital audio signals is used. May be assigned.

Further, in the above embodiment, the case where the optical disk is reproduced by the viewer has been described. However, the present invention is not limited to this. For example, the optical disk is reproduced and edited by a personal computer having a similar optical disk drive. You may do so. In this case, the personal computer corresponds to the editing device.

Further, in the above-described embodiment, the case where the digital video signal and the digital audio signal recorded by the television camera are edited has been described. However, the present invention is not limited to this, and the digital video signal and the digital audio signal recorded by various video equipment are edited. The present invention can be widely applied to editing a video signal and a digital audio signal.

In the above-described embodiment, a case has been described in which a digital video signal is data-compressed by MPEG and recorded on an optical disk. However, the present invention is not limited to this, and data is compressed by various methods and recorded. It can be widely applied to cases.

Furthermore, in the above-described embodiment, a case has been described where a digital video signal and a digital audio signal are recorded on a phase change type optical disk capable of recording on both sides. However, the present invention is not limited to this, and recording is performed on both sides. Possible magneto-optical discs and write-once optical discs may be used, and if a sufficient recording capacity can be secured, only one side may be used.

[0154]

As described above, according to the present invention, a video signal and an audio signal recorded on a disc-shaped recording medium are reproduced under a condition of a constant linear velocity, so that the video signal and the audio signal are reproduced under a condition of a constant angular velocity. Even if the video signal and the audio signal recorded at high density are discretely reproduced, the video signal and the audio signal can be reproduced without interruption. As a result, it is possible to process the news gathering results from the imaging device to the editing device by using a common disk-shaped recording medium, and to process the news gathering results much more efficiently than in the past. Can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing an editing system according to a first embodiment of the present invention.

FIG. 2 is a plan view showing an optical disc applied to the editing system of FIG. 2;

FIG. 3 is a block diagram illustrating a television camera of the editing system in FIG. 1;

FIG. 4 is a block diagram showing a recording signal processing circuit of the television camera of FIG.

FIG. 5 is a time chart for explaining the operation of the recording signal processing circuit of FIG. 4;

FIG. 6 is a block diagram showing a reproduction signal processing circuit of the television camera of FIG. 3;

FIG. 7 is a time chart for explaining the operation of the reproduction signal processing circuit of FIG. 6;

FIG. 8 is a front view showing a viewer of the editing system of FIG. 1;

9 is a cross-sectional view showing a pointing device in the viewer of FIG.

FIG. 10 is a block diagram illustrating a configuration of a viewer in FIG. 8;

FIG. 11 is a block diagram showing the configuration of a drive and drive control in the viewer of FIG. 10 in detail.

FIG. 12 is a block diagram showing a personal computer of the editing system of FIG. 1;

FIG. 13 is a plan view showing a display screen of a personal computer during simple editing.

FIG. 14 is a plan view showing an editing system according to a second embodiment of the present invention.

FIG. 15 is a block diagram showing a viewer applied to the editing system of FIG. 14;

FIG. 16 is a plan view showing an editing system according to a third embodiment of the present invention.

FIG. 17 is a block diagram showing a viewer applied to the editing system of FIG. 15;

FIG. 18 is a block diagram showing a personal computer applied to the editing system of FIG.

FIG. 19 is a plan view showing an editing system according to a fourth embodiment of the present invention.

FIG. 20 is a block diagram showing a viewer applied to the editing system of FIG. 19;

FIG. 21 is a plan view showing a pointing device applied to a viewer according to another embodiment.

FIG. 22 is a plan view showing a pointing device using a trackball.

[Explanation of symbols]

1, 81, 91, 101 ... editing system, 2 ... television camera, 3 ... optical disk, 4, 84, 94,
104 viewer, 5, 95 personal computer, 7A, 7B, 60A1 to 60B2 optical pickup, 52 system control, 72 central processing unit, AR1 system data area

Claims (7)

[Claims] 1. A disk drive in which a video signal and an audio signal are recorded at a constant linear velocity at least in a predetermined area, for rotating a disk recording medium at a constant angular velocity. A reproducing unit that intermittently reproduces and outputs the video signal and the audio signal from a medium; and a storage unit that temporarily holds the video signal and the audio signal output from the reproducing unit and continuously outputs the video signal and the audio signal. An editing device characterized by the following. 2. The editing apparatus according to claim 1, wherein said disk-shaped recording medium is formed so as to be loaded into a predetermined image pickup device and record said video signal and audio signal. 3. The video signal reproducing system for reproducing the video signal from the disc-shaped recording medium, the video signal reproducing system seeks independently from the disc-shaped recording medium, and reproduces the audio signal from the disc-shaped recording medium. 2. The editing apparatus according to claim 1, further comprising an audio signal reproducing system for reproducing a signal. 4. The disc-shaped recording medium according to claim 1, wherein an information recording surface is divided concentrically, and a recording area for the video signal and a recording area for the audio signal are sequentially and cyclically allocated. Item 2. The editing device according to Item 1. 5. A disk-shaped recording medium is detachably held,
An imaging device for recording video and audio signals obtained by imaging a desired subject on the disc-shaped recording medium; and detachably holding the disc-shaped recording medium, and recording on the disc-shaped recording medium by the imaging device. Reproduces the reproduced video signal and audio signal, creates an edit list for editing the video signal and the audio signal by an operator's operation based on the reproduced video signal and audio signal, and records the edit list on the disc-shaped recording medium. An editing device that records the video signal and the audio signal by driving the disc-shaped recording medium under a condition where the linear velocity is constant in at least a predetermined area; Drives the disc-shaped recording medium under the condition of a constant angular velocity and outputs the video signal Editing system characterized by reproducing fine audio signal. 6. A video signal reproducing system for reproducing the video signal from the disc-shaped recording medium, the editing device seeks independently of the video signal reproducing system, and outputs the audio signal from the disc-shaped recording medium. The editing system according to claim 5, further comprising an audio signal reproducing system for reproducing a signal. 7. The disk-shaped recording medium according to claim 5, wherein an information recording surface is divided concentrically, and a recording area for the video signal and a recording area for the audio signal are sequentially allocated. Editing system described.