JP2000306370A - Data recording and reproducing apparatus and production method for information on editing point - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make performable a recording operation, an editing operation and a sending operation in parallel while the shot marker of A/V data is being added. SOLUTION: A video camera and an editing machine are connected to an A/V server which can perform a plurality of input/output operations simultaneously. The output of the camera is recorded as input data. At a point of time when a shot marker is added, a marker and a point which is by a fixed length later than the marker are designated respectively as IN point and an OUT point. A prescribed addition length is added to the front and the rear of a range which is composed of the IN point and the OUT point. As a result, a VFL is produced automatically (A). The VFL is a file indicating a reproducing range in the address space of a file as an object, and it is a virtual video file. For example, at a point of time when a VFL1 is produced, an editing operation can be performed to the VFL1. A reproducing starting position and a reproduction finishing position are set respectively with respect to the VFL1, and a VFL1 is produced (B). Video data which is based on an edited VFL1a can be sent out at an arbitrary timing (C).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows an IN point to be set while recording video data on a non-linearly accessible recording medium, and automatically generates an OUT point after a predetermined period from the set IN point. The present invention relates to a data recording / reproducing apparatus and an editing point information creating method described above.

[0002]

2. Description of the Related Art Conventionally, broadcasting stations and the like have accumulated audio data and / or video data (hereinafter referred to as A / V data) on a non-linearly accessible recording medium such as a hard disk device. A / V data transmission and editing were performed.
An A / V server was used.

[0003] For example, a material composed of video and / or audio recorded by a video camera is recorded on a video tape as A / V data. The video tape on which the photographing data is recorded is reproduced by a video tape recorder connected to an A / V server. A / V data of reproduction output is A / V
The data is supplied to the server and stored in a recording medium.

At the time of recording with a video camera, a marker is added to a material so that a desired portion can be easily searched for later editing work. This marker is called a shot marker. A system in which A / V data is edited using the shot marker is called a shot marker system.

[0005] A shot marker system according to the prior art will be schematically described. For example, a video camera is provided with a marker button for instructing addition of a marker. When the shooting operator shoots with a video camera,
Operate the marker button where you think you will use it when editing. Then, position information such as a time code indicating the location is recorded as a shot marker in an empty area of the video tape. The position information is recorded, for example, at a position on a track provided in the longitudinal direction of the video tape corresponding to the timing when the marker button is pressed.

A / V data recorded on a video tape with a shot marker added by a video camera is transferred to an A / V server for editing and recorded on a recording medium.
A / V data is read from the tape, and the read A / V
Recording the V data on the recording medium of the A / V server,
Called download. At the time of downloading, the shot marker is also read from the video tape together with the A / V data. Then, the image of the frame at the location indicated by the shot marker is extracted from the A / V data, and the frame image is stored as a log.

At the time of editing, a desired scene is searched for based on the log image stored by the shot marker. That is, a log image corresponding to the shot marker added at the time of recording is displayed on a monitor connected to the A / V server. If a plurality of shot markers are added, a plurality of log images corresponding to each shot marker are displayed. An editing operator who edits A / V data selects a necessary log image from the plurality of log images.
For the A / V data stored in the recording medium, the position corresponding to the selected log image is accessed, and a predetermined edit,
For example, an IN point and an OUT point are set.

When the editing is completed, the edited A / V data is written to a video tape. In the above-described example of setting the IN point and the OUT point, OU starts from the set IN point.
A / V data up to the point T is written on the video tape as an editing result.

The video tape on which the edited A / V data has been written is used, for example, by attaching it to a transmission device. Alternatively, the video tape on which the edited A / V data is written is used by another editing device. Note that A
A / V data is read from the recording medium of the / V server,
Writing the read A / V data to the video tape is called record back.

[0010]

As described above, conventionally, recording of A / V data and editing of the recorded A / V data have been performed by different devices. Therefore, it is necessary to download the recorded A / V data from the tape to the A / V server and record back the edited A / V data. For this reason, recording, editing, and transmission after editing can be performed only in a serial manner, which requires a great deal of time.

Accordingly, an object of the present invention is to provide a data recording / reproducing apparatus and an editing point information creating method which enable recording, editing and transmission of A / V data while adding a shot marker in parallel. Is to do.

[0012]

In order to solve the above-mentioned problems, the present invention has a recording medium capable of non-linear access, and stores data input in a time slot to which a plurality of input / output means are assigned. In a data recording / reproducing apparatus which writes data on a recording medium and reads out data written on the recording medium in an assigned time slot, based on trigger information, reproduction range data indicating a reproduction range in an address space of a target file is converted into a reproduction range. A data recording / reproducing apparatus characterized by having reproduction range data generating means for generating data of a fixed length.

Further, the present invention has a recording medium capable of non-linear access, writes data input in a time slot to which a plurality of input / output means are assigned, and writes the data written in the recording medium. In a data recording / reproducing apparatus which reads data in an assigned time slot, in an edit point information creating method for setting an edit point for data recorded on a recording medium, a reproduction range in an address space of a target file is determined based on trigger information. The reproduction range data having a fixed length, and an edit point setting step of setting an edit point based on the reproduction range data generated in the reproduction range data generation step. This is a method for creating edit point information.

As described above, the invention according to claim 1 has a recording medium capable of non-linear access, writes data input in a time slot to which a plurality of input / output means are assigned, and writes the data into the recording medium. In a data recording / reproducing apparatus for reading data written on a recording medium in an assigned time slot, reproduction range data indicating a reproduction range in an address space of a target file is created with a fixed length of reproduction range based on trigger information. Thus, when the reproduction range data is created, the processing on the reproduction range data can be performed immediately.

According to a second aspect of the present invention, there is provided a recording medium capable of performing non-linear access, wherein data input in a time slot to which a plurality of input / output means are assigned is written on the recording medium, and is written on the recording medium. In a data recording / reproducing apparatus for reading written data in an assigned time slot, in an edit point information creating method for setting an edit point for data recorded on a recording medium, an address space of a target file is set based on trigger information. Since the playback range data indicating the playback range in is created with a fixed length playback range and the editing point is set based on the created playback range data, the playback range is created immediately after the creation of the playback range data. You can set edit points for the data.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. The data recording / reproducing apparatus according to the embodiment has a function of recording / reproducing, inputting / outputting, and editing AV data, and enables an editing operation to be performed by one apparatus.

FIG. 1 is a perspective view showing the appearance of a data recording / reproducing apparatus according to one embodiment of the present invention. This data recording / reproducing apparatus has a plurality of input / output ports, and has audio data and / or video data (hereinafter A / V
(Referred to as audio and / or video data) and an A / V server capable of recording and storing the A / V data in parallel and reproducing the stored A / V data.

The data recording / reproducing apparatus 1 according to the embodiment has one housing 2. The housing 2 has a size equivalent to, for example, one VTR. On the front surface of the housing 2, a meter panel 3 is provided on an upper side, and a control panel 4 is provided on a lower side. The control panel 4 is detachable from the housing 2. The control panel 4 is detached from the housing 2 and
It can be made not to be used, or can be detached from the housing 2, connected to a circuit in the housing 2 by a cable, and used after being removed from the housing 2.

FIG. 2 is a front view showing main parts of the meter panel 3 and the control panel 4 shown in FIG. Data recording / reproducing device 1 according to one embodiment
Is an input unit for inputting A / V data or A / V data.
It has four ports as output units for outputting V data. Each port is capable of inputting or outputting video data and audio data of 4 or 8 channels, respectively.

The meter panel 3 shown in FIG. 2 has a display unit 11 for displaying the operation states of the four ports. The display unit 11 has four display areas 11A to 11D corresponding to each port. Display areas 11A-1
1D are arranged in the upper left, upper right, lower left, and lower right portions of the display unit 11, respectively. Each display area 11A-
11D is an audio level meter unit 1 for displaying audio level meters for four channels.
2, a dot matrix unit 13 for displaying a time code or the like, a status display unit 14 for displaying a current operation state (reproducing, recording, etc.) of each port, and a type of a displayed time code. And an information display unit 15 for displaying various information such as

The audio level meter section 12 displays the number of the corresponding channel below the audio level meter for each channel. By operating a switch to be described later, the audio level meter unit 12 displays four audio level meters from the first channel to the fourth channel and four audio level meters from the fifth channel to the eighth channel. Either one is selectively displayed. The display is switched according to the operation of a switch (not shown).

In the data recording / reproducing apparatus 1 according to this embodiment, selection of input of A / V data, adjustment of recording or reproducing level of audio data, and monitoring of audio data are performed for each port. Various operations such as selection of a channel to be performed can be performed. The meter panel 3 has four port selection switches 16 for selecting ports to be operated.
Is provided.

The meter panel 3 is further provided with four rotary encoders 17 for adjusting the level of recording or reproduction of audio data and a rotary encoder 18 for adjusting a video process.

On the other hand, the control panel 4 includes an operation / display unit 21 including various switches required for editing work and a display unit for displaying images and the like used for editing work. Similarly to the port selection switch 16, the control panel 4 is provided with four port selection switches 22 for selecting a port to be operated. The control panel 4 further includes a switch 23 for instructing recording, and a switch 2 for instructing rewinding.
4. A switch 25 for instructing reproduction, a switch 26 for instructing fast-forward, and a switch 27 for instructing stop are provided. Further, the data recording / reproducing apparatus 1 according to this embodiment can remotely control up to two external VTRs.
The control panel 4 has an external VTR that is remotely controlled.
Are provided.

FIG. 3 is a block diagram showing a circuit configuration of the data recording / reproducing apparatus 1 according to this embodiment. The data recording / reproducing apparatus 1 according to this embodiment includes a data bus 30A for transferring A / V data and a CPU bus 30B for transferring commands. A timing management unit 31, an information management unit 32, a recording and reproducing unit 33, data management units 34A to 34D, and a control unit 36 are connected to the buses 30A and 30B, respectively.
The data input / output units 37A to 37D are connected to the data management units 34A to 34D, respectively. A special effect unit (effector) 39 is connected to the control unit 36.
The control panel 36 is connected to the meter panel 3, and the timing management section 31 is connected to the control panel 4. Each of the units 31 to 39 is formed of, for example, a separate substrate.

The timing management section 31 has a timing pulse generator 41. Timing pulse generator 4
1 generates a timing pulse and supplies it to each circuit that requires the timing pulse. An external reference video signal Vref is input to the timing pulse generator 41. The timing management unit 31 further controls the control panel 4 and the internal bus 30.
(In the figure, described as I / F) 42 for connecting the.

The information management unit 32 holds file management information indicating a file recording area on the recording medium, and manages the file based on the file management information and an external network such as Ethernet. It has a network driver 44 connected to and connected to an external network to input and output data.

The recording / reproducing unit 33 is connected to a plurality of hard disk devices (hereinafter, referred to as HDDs) 45 for recording video data, and a video disk array controller 47 for controlling these HDDs 45 and an audio data. An audio disk array controller 48 connected to a plurality of HDDs 46 for recording and controlling these HDDs 46 is provided between the disk array controllers 47 and 48 and the internal bus 30 to temporarily store data. Buffer memory 4 for performing
9. Here, HDD for video data
Reference numeral 45 denotes nine units, eight of which are used for recording A / V data, and one is used for recording parity data. The nine HDDs 45 and the video disk array controller 47 are connected to a RAID (Redutant Arrays of Inexpen
sive Disks) 3. On the other hand, two HDDs 46 for audio data are provided. The two HDDs 46 and the audio disk array controller 48 have a RAID1 configuration.

The control unit 36 has an interface (I / F in the figure) 52 for connecting the editing unit 51 to the meter panel 3 and the internal bus 30, and a CPU 81. The CPU 81 is connected to the CPU bus 30B, and can communicate with other components connected to the CPU bus 30B. The interface 52 includes:
An external editing command CE can also be input. The editing unit 51 has functions of a matrix switcher and an audio mixer. The editing unit 51 is connected to the special effect unit 39, and has two data output paths for outputting data to the special effect unit 39 and one data input path for inputting data from the special effect unit 39. And a route. The editing unit 51 can output monitor data DM.

The special effect section 39 performs processing for obtaining special effects such as dissolve and wipe.

The data input / output units 37A to 37D are connected to terminals 61A to 61D, respectively. Here, the terminal 61A is a data input terminal, and the terminals 61B to 61D are data output terminals. Also, terminals 61A to 61D
The A / V data input / output by, for example, a serial digital interface (hereinafter referred to as SDI).
It is digital data according to the standard.

The data input / output unit 37A and the data management unit 34A constitute one port 60A, and the data input / output unit 37B and the data management unit 34B constitute one port 60A.
0B, the data input / output unit 37C and the data management unit 34C constitute one port 60C, and the data input / output unit 37D and the data management unit 34D constitute one port 60D.

The data input / output unit 37A has an encoder 62 for compressing SDI standard data and a two-input / one-output switch 64. One input terminal of the switch 64 is connected to the terminal 61A, the other input terminal is connected to the editing unit 51, and the output terminal is connected to the input terminal of the encoder 62. Note that the terminal 61A is also connected to the editing unit 51.

The data input / output unit 37B is a decoder 6 for decompressing the compressed data and converting it to SDI standard data.
3 and a switch 65 for two inputs and one output. One input terminal of the switch 65 is connected to the output terminal of the decoder 63, the other input terminal is connected to the editing unit 51,
The output terminal is connected to the terminal 61B. Note that the output end of the decoder 63 is also connected to the editing unit 51.

The data input / output unit 37C is a decoder 7 for decompressing the compressed data and converting it into SDI standard data.
It has a switch 74 for switching between two and two inputs and one output. One input terminal of the switch 74 is connected to the output terminal of the decoder 72, the other input terminal is connected to the editing unit 51,
The output terminal is connected to the terminal 61C. Note that the output end of the decoder 72 is also connected to the editing unit 51.

The data input / output unit 37D is a decoder 7 for decompressing the compressed data and converting it to SDI standard data.
It has three and two-input / one-output changeover switches 75. One input terminal of the switch 75 is connected to the output terminal of the decoder 73, the other input terminal is connected to the editing unit 51,
The output terminal is connected to the terminal 61D. Note that the output terminal of the decoder 73 is also connected to the editing unit 51.

The data management unit 34A includes a data input / output unit 3
It has a buffer memory 66 inserted between the output terminal of the 7A encoder 62 and the internal bus 30. The data management unit 34B has a buffer memory 67 inserted between the internal bus 30 and the input terminal of the decoder 63 of the data input / output unit 37B. The data management unit 34C has a buffer memory 76 inserted between the internal bus 30 and the input terminal of the decoder 72 of the data input / output unit 37C. The data management unit 34D includes the internal bus 30 and the data input / output unit 3
It has a buffer memory 77 inserted between the input terminal of the 7D decoder 73.

It should be noted that the data management section 34A has a CPU 80
A and can communicate with other components connected by the CPU bus 30B. Similarly, the data management units 34B, 34C and 34D
B, 80C, and 80D, and can communicate with other components connected by the CPU bus 30B.

The data management section 34A can receive a recording command CR from outside. The data management unit 34A responds to the terminal 61A in response to the recording command CR.
Is transferred to the recording / reproducing unit 33 to control the recording process. Data management unit 3
An external reproduction command CP can be input to 4B to 34D. Data management units 34B to 34D
Reproduces data by the recording / reproducing unit 33 in response to the reproduction command CP, and transmits the data to the terminals 61B to 61D.
Is controlled.

That is, each of the ports 60A to 60D is provided with an interface (not shown) conforming to, for example, the RS-422 standard. For example, an external device such as an external controller or a video editing machine is connected to the A / V server by this interface. External recording commands CR and reproduction commands CP are transmitted to the CPUs 80 of the ports 60A to 60D through this interface.
It is exchanged by communication with A to D.

Each of the units 31 to 39 in FIG. 3 has a microcomputer including a CPU (central processing unit), a ROM (read only memory) and a RAM (random access memory).

The data management units 34A to 34D use the time slots to access the recording / reproducing device 33 for each of the ports 60A to 60D in a time-division manner.

The data input / output units 37A to 37D and the data management units 34A to 34D can be replaced with other types of data input / output units and data management units, respectively. For example, output-type data input / output unit 37B and data management unit 34B, data input / output unit 37C and data management unit 34C, data input / output unit 3
Any set of 7D and data management unit 34D can be replaced with an input-type data input / output unit and data management unit such as a set of data input / output unit 37A and data management unit 34A. In such a case, the data recording / reproducing device 1 is a device having two input ports and two output ports.

Next, the operation of the data recording / reproducing apparatus 1 according to this embodiment will be described. First, the operation for recording A / V data input from the outside will be described. At this time, data is input to terminal 61A. This data is input to the encoder 62 via the switch 64 in the data input / output unit 37A and is compressed.
The compressed data is temporarily stored in the buffer memory 66 in the data management unit 34A. Data management unit 34A
Accesses the recording / reproducing unit 33 during the time slot assigned to the
Is transferred to the recording / reproducing unit 33 via the internal bus 30.

In the recording / reproducing section 33, the transferred data is temporarily stored in the buffer memory 49 and then read. Of the data read from the buffer memory 49, video data is input to the video disk array controller 47, and audio data is input to the audio disk array controller 48. The video disk array controller 47 divides the input video data into predetermined units, calculates parity data, and records the divided data and parity data in a plurality of HDDs 45. The audio disk array controller 48 records the input audio data in the two HDDs 46.

Next, the operation of outputting recorded data to the outside will be described. At this time, any one of the data management units 34B to 34D determines whether the recording / reproducing unit 33
And requests the recording / reproducing unit 33 to reproduce data. In the data reproducing unit 33, the video disk array controller 47 reads the video data and parity data divided from the plurality of HDDs 45,
The video data is reproduced by unifying the divided data and performing error detection and error correction based on the parity data. The audio disk array controller 48 reproduces audio data from the error-free HDD 46 of the two HDDs 46. The reproduced video data and audio data are temporarily stored in the buffer memory 49, read out, and read via the internal bus 30 to the data management unit 34B.
To 34D.

When data is output to the outside from the terminal 61B, the reproduced data is expanded by the decoder 63 in the data input / output unit 37B through the buffer memory 67 of the data management unit 34B, and the switch 65 is set. Through,
The signal is output from the terminal 61B to the outside. Data is transferred to terminal 61
When outputting to outside from C, the reproduced data is
Decompressed by the decoder 72 in the data input / output unit 37C via the buffer memory 76 of the data management unit 34C,
The signal is output from the terminal 61C to the outside via the switch 74. When data is output to the outside from the terminal 61D, the reproduced data is expanded by the decoder 73 in the data input / output unit 37D through the buffer memory 77 of the data management unit 34D, 6
Output from 1D to the outside.

In the data recording / reproducing apparatus 1 according to this embodiment, since the data management units 34A to 34D operate in a time-division manner, the same data or different data is simultaneously output from the three terminals 61B to 61D. It is possible.

Next, the operation for editing data will be described. The editing unit 51 of the control unit 36 performs data editing processing using at least one of the data input from the outside and the data reproduced by the recording / reproducing unit 33. That is, the editing unit 51 can input data input from the outside via the terminal 61A and output data reproduced by the recording / reproducing unit 33 and expanded by the decoders 63, 72, and 73. The editing unit 51 performs an editing process using at least one of these data, using its own matrix switcher or audio mixer, and using the special effect unit 39 as necessary. The editing unit 51 can perform AB roll editing for obtaining special effects such as dissolve and wipe.

The editing section 51 can output data obtained by the editing process to any of the switches 64, 65, 74, and 75. The data output to the switch 64 is recorded on the HDDs 45 and 46 by the recording / reproducing unit 33. The data output to the switches 65, 74, and 75 are output from terminals 61B, 61C, and 61D, respectively. As described above, the editing unit 51 can perform linear editing.

The editing unit 51 can also perform non-linear editing that holds only editing information such as data at editing points without outputting the edited data.

In the data recording / reproducing apparatus 1 according to this embodiment, the meter panel 3 is used to select the input of A / V data, adjust the recording or reproducing level of the audio data, and adjust the audio data. Various operations, such as selection of a channel for monitoring the data, can be performed. Further, the operating state of the four ports can be displayed on the display unit 11 of the meter panel 3.

Further, in the data recording / reproducing apparatus 1 according to this embodiment, an operation necessary for an editing operation can be performed using the control panel 4.

Next, a file system applied to this embodiment will be described. The file system is
In the server unit, that is, the recording / reproducing unit 33, this is a system for managing where the file is recorded on the HDD 45 constituting the recording / reproducing unit 33. The file management by the file system is executed by the file management unit 43.

The file system information is roughly expressed as
The information consists of (1) file entry information, (2) record entry information, and (3) free space list information. FIG. 4 schematically shows an example of the structure of each of these pieces of information. These file entry information, record entry information, and free space information are held in the information management unit 32 as, for example, file management information.

As shown in FIG. 4A, the file entry information of (1) describes a file name and pointer information to the first record entry information. Therefore, the file entry information is set for each file. File entry information indicates that the file is
Based on the link information, linking is made to record entry information described later, which is information indicating from which position in 45 and how long the data is written.

As shown in FIG. 4B, the record entry information of (2) is, for example, the first address information on the HDD 45 where the file is actually written to the HDD 45 and the address indicating the first position. And data length information indicating the data length of the continuous area, indicating whether or not the data length has been written continuously. Further, in the record entry information, link information to the next record entry information is described.

In the HDD 45, one file may be divided into different areas and written. In this case, record entry information is created for each divided area. The link information is, for example, pointer information, which is information indicating a link to record entry information indicating information of the next area in which the divided file is written. By sequentially tracing the pointer information indicated by the link information in the plurality of record entry information, the address information of the file divided into different areas can be grasped. If the file ends in the continuous area, for example, “EOF (End of Fi
le) "is written.

FIG. 5 schematically shows access to a file by the record entry information. It is assumed that a file having a file name “A” has been written in the address space of the HDD as illustrated in FIG. 5A. That is, file "A" is divided into three,
Address [50]-[100], Address [200]-
[300] and addresses [500] to [750]. In the following description, the numerical value of the address corresponds to the recording and playback time,
For example, it is described that the playback length from address [100] to address [200] for address [100] is length [100].

FIG. 5B shows an example of file entry information (FE) and record entry information (RE) corresponding to FIG. 5A. In the file entry information, the file name “A” of the file is described, and link information for linking to the first record entry information is described. The link information is, for example, the file name of the first record entry information to be linked. Alternatively, the position where the record entry information is written, for example, pointer information indicating the address may be directly used as the link information.

In this example in which the file "A" is divided into three, three pieces of record entry information are created.
First, in the first divided area, data having a length [50] from the address [50] (that is, the address is [10]
0]) is written. That is, data is continuously written at addresses [50] to [100]. The file “A” has been written over the next continuous area. By tracing the link information, record entry information indicating the next continuous area in which the file “A” has been written is referred to, and data of a length [100] from the address [100], that is, addresses [100] to [200] It can be understood that the data is written in the continuous area of []. In addition, file "A"
Is written over the next continuous area. By following the link information in the same manner as described above, the record entry information indicating the next continuous area in which the file “A” has been written is referred to, and the data from the address [500] to the length [250], that is, the address [500] ~
It can be seen that data has been written in the continuous area of [750]. Since the file "A" ends at the address [750], it is not linked to the next continuous area, and the corresponding record entry information contains "EO" as link information.
F "is described.

The free space list information of (3) is HD
Information of an area where data is not written on D45 is described. The description method conforms to the above-described record entry information. That is, as shown in FIG. 4C, the area where no data is written, that is, the address information at the head of the free area and the length of the continuous free area are described. At the same time, link information to the next free space list information is described. The link information is, for example, the file name of the first free space list information to be linked. Alternatively, a position where the free space list information is written, for example, pointer information indicating an address may be directly used as link information.

FIG. 5C schematically shows a link state of the free space list information corresponding to FIG. 5A. In the example of FIG. 5A, the address

[0] to [50], address [10
0] to [200] and addresses [300] to [50]
0] is an area where no data is written. Therefore, as shown in FIG. 5C, the first free space list information includes the start address of the continuous free area.

[0]
It is described that there is an empty area of length [50]. When the next free space list information is referred to by following the link information, the start address of the free area is [10
0] describes that there is an empty area having a length of 100 minutes from the start address. When the next free space information is referred by further following the link information, the start address of the free area is [300], and the length from the start address is [20].
0]. Since "EOF" is described as the link information, it is understood that there is no more free space in this HDD. In this way, by referring to the free space list information one after another based on the link information, it is possible to grasp the free space of the entire HDD.

A file system for managing files on the HDD 45 according to this embodiment is configured based on the three pieces of information of the above-described file entry information, record entry information, and free space information. For example, H in which the above-mentioned file “A” has already been written
When another file "B" is written to the DD 45, file entry information is created based on the file name "B" of the file "B" to be written. Then, referring to the free space list information, the file "B"
Is written to the HDD 45. At that time, file "B"
Record entry information is created based on the write address and the data length of the record entry. When the file “B” is written, the free space on the HDD 45 changes, and the free space list information is rewritten.

Next, an A / V data editing process according to the embodiment, which is performed based on the above-described file system, will be schematically described. In this embodiment, a virtual file (virtual file list: VFL) indicating the edited result is created without outputting the edited result as a real A / V data file. VFL
Describes information necessary for reproducing the editing result on the A / V server.

An editing device is connected to the A / V server. In the A / V server according to the embodiment, A / V
The stored A / V data can also be edited by the control panel 4 attached to the server body. Hereinafter, a case where an external editing device is connected to the A / V server will be described.

The editing device sends an editing command CE, a reproduction command CP, and a recording command CR to the A / V server.
Are supplied. For example, when an attempt is made to edit a file having a file name “A” (hereinafter referred to as a file “A”) stored in the A / V server, information indicating the file “A” is transmitted from the editing apparatus to the A / V server. Output to the server. On the A / V server side, the information management unit 3
Since it is possible to know in which area of the HDD 45 the file “A” is recorded based on the file management information held in the HDD 2, the information management unit 32 issues a playback command to the recording and playback unit 33, Play "A". The reproduced file “A” is supplied to the port 60B via the bus 30A, for example, and is transferred from the port 60B to the editing device.

On the editing device side, based on the transferred file "A", the file is displayed on a monitor connected to or built in the editing device. Editing operators who perform editing work
While checking the monitor image, an editing point indicating which part of the material stored in the A / V server is actually used is set by operating the operating means provided in the editing apparatus. The editing operation includes various processes such as setting an IN point for starting reproduction and an OUT point for ending reproduction, and applying a special effect such as wipe or dissolve to the reproduced video. Hereinafter, the case where the IN point and the OUT point are set will be described for explanation.

An editing result in which the IN point and the OUT point are set by editing is transferred to the A / V server. At this time, in this embodiment, the set IN point and OUT point are set together with the file name of the A / V file used for editing.
Only the point information is transferred to the A / V server. An actual A / V file based on the edited contents is not created.

As a result of the editing, the above-mentioned VFL becomes A / V
Forwarded to server. The VFL is transferred to the A / V server and stored in a memory (not shown) of the information management unit 32, thereby completing the editing operation. The A / V server reads out the A / V data stored in the HDD 45 based on the VFL, and sends out the edited material. That is, by using the VFL, the editing result is converted into a new A / V
This eliminates the need to record as a file, and allows editing of the material and transmission of the edited result in real time.

FIG. 6 shows an example of the structure of the VFL. VF
L describes the file name of the target A / V file, the reproduction start position in the file, ie, information on the IN point, and the reproduction end position, ie, information on the OUT point. The playback start position and the playback end position are the target A
/ V is the address information for the start position of the address space in the file.

As an example, in the example shown in FIG.
With respect to the file [A] having the length [400], the position of the length [10] from the beginning of the file is set as the IN point, and the length [60] from the beginning, the length [50] behind the IN point
Is the OUT point, as shown in FIG.
The playback start position is [10], and the playback end position is [6].
0].

On the other hand, as described above, the file is H
When data is written on the DD 45, the data may be divided and written in different areas on the HDD 45. The divided files are managed as one continuous file by the file management unit 43 by successively following the link information of the record entry information and referring to the record entry information.

Similarly, in the case of the VFL, a portion from the described reproduction start position to the reproduction end position may be divided and written in different areas of the HDD 45 in some cases.
FIG. 8 shows the processing in this case according to FIG. 5A described above. The file “A” is stored on the HD as shown in FIG. 8A.
D45 is divided into different areas and recorded. On the other hand, the reproduction start position and the reproduction end position in the VFL address space are as shown in FIG. 8B.

In the file management section 43, based on the file entry information and the record entry information, the VF of the file “A” is obtained from the file head position data described in the record entry information and the recording length data of the continuous area.
The reproduction start position described in L is accessed. In the example of FIG. 8A, the head position of the file “A” is the address [50] in the address space of the HDD 45. Since the reproduction start position is set to the address [10] in the address space of the file “A” by the VFL, the address space of the HDD 45 is obtained by adding the length [10] to the address [50] in the address space of the HDD 45. The reproduction is started from the address [60].

When a playback length exceeding the recording length of the continuous area described in the record entry information is designated by the playback start position and the playback end position of the VFL,
Link to the next record entry information based on the link information of the record entry information. In the example of FIG. 8A, VFL
Is the reproduction length [50], whereas the recording area indicated by the first record entry information is the HDD 4
In the address space of No. 5, address [50] to address [100]. Since the reproduction is started from the address [60], in order to reproduce the reproduction length designated by the VFL, the data having the length [10] must be reproduced. The data of the above-mentioned length [10] is reproduced from the file head position indicated by the next record entry information linked based on the link information. That is, in the address space of the HDD 45, the address [2
00] to address [210] are reproduced.

That is, the reproduction range indicated by VFL of the file “A” in the VFL address space is as shown in FIG.
As shown in B, based on the continuous area in the address space of the HDD 45, on the HDD 45, a portion of length [40] and a portion of length [10] are divided and written in different areas. Will be.

On the other hand, if the VFL is a description as shown in an example in FIG. 9, in the address space of the HDD 45, the address of the data to be actually reproduced is reproduced from the address [60], and the address [100]. The data written in the continuous area up to this point is reproduced.

In the present invention, the shot marker system described in the related art is realized by using the above-mentioned VFL.
The method will be described below. As described in the related art, the shot marker is, for example, a part that is likely to be used for later editing while being shot by a video camera. For example, at the time of editing, a predetermined cut is created based on the shot marker, and so-called highlight editing can be performed.

In the present invention, the VFL is created by automatically setting the IN point and the OUT point based on the position marked as a shot marker. For example, the position of the shot marker is set as the IN point, and the position after the fixed length from the IN point is OU.
It is set to T point. Then, VFLs are created using the positions having a predetermined margin with respect to the IN point and the OUT point as start position information and end position information of the VFL.
Highlight editing and the like are performed using this VFL. That is, A / V data can be reproduced from the recording / reproducing unit 33 within the reproduction range described in the VFL, and the VFL can be considered as a virtual A / V file. An editing operation is performed based on the video reproduced by the VFL.

The "position" here means a certain point in time series.

FIG. 10 shows the VF created in this way.
L shows an example. The time series is expressed in the horizontal axis direction in the figure.
A shot marker is set for the input data.
Starting from the position of the shot marker, a position behind by a preset fixed length (hereinafter, referred to as a set length) is obtained, and a position to which a predetermined additional length is added is set as an end position of the VFL. On the other hand, a position that is traced back by a predetermined additional length from the position of the shot marker is set as the VFL start position. The VFL is composed of the start position information and the end position information indicating the start position and the end position.

FIG. 11 is a flowchart of an example of a process for creating a VFL using shot markers. First, for example, a video output terminal of a video camera is connected to a terminal 61A of a port 60A for inputting data. Video data output by shooting with the video camera is supplied from the video output terminal of the camera to the terminal 61A of the port 60A. The supplied video data is sent to the editing unit 5
The data is output as monitor data DM via the monitor 1 and is displayed on an external monitor (not shown).

On the other hand, for example, A / V
An external controller adapted to output a recording command CR to the server is connected to the A / V server. For example, if the external controller and the A / V server
It is connected with a 9-pin connector and a cable based on -422 standard. As described above, provided in the port 60A,
Using an interface (not shown) for inputting the recording command CR, communication is performed between the external controller and the A / V server based on, for example, the RS-422 standard. A recording command CR for instructing recording is supplied from the external controller to the A / V server.

The external controller connected to the A / V server is provided with, for example, a predetermined key or the like as an adding means for adding a shot marker to the output video data. Hereinafter, this key is called a shot marker key. For example, the operator operates the shot marker key while watching an image based on the video data supplied from the video camera and displayed on a monitor (not shown). When the operator operates this key, an instruction signal for adding a shot marker, for example, a predetermined trigger signal is output at the operated timing. This instruction signal is transferred to the port 60A via the interface for inputting the above-mentioned recording command CR, and in this embodiment, the VF for creating the VFL is used.
It is supplied to the CPU 80A having an L generation block.

The recording command CR output from the external controller is received by the A / V server. The received recording command CR is supplied to the CPU 80A of the port 60A. In step S11, the CPU 80A issues a file open instruction to the file management unit 43 based on the recording command CR. As the file name at the time of file opening, for example, a file name that is not used by the file management unit 43 based on the file management information is set. When the file is opened in this way, in step S12,
The file management unit 43 notifies the port 60A of the opened file. Then, step S13
Then, the port 60A records the video data supplied from the video camera for the opened file.

If the recording is to be continued in step S14, the process proceeds to step S15,
The PU 80A counts the number of frames of the recorded video data. Then, the next step S1
At 6, it is determined whether the shot marker key has been pressed in the external controller. If a trigger signal instructing the addition of a shot marker has not been detected, the process returns to step S14.

If it is detected that the above-mentioned predetermined trigger signal is supplied from the external controller, it is determined that the shot marker key has been pressed, and the process proceeds to step S.
Move to 17. In step S17, the position where the shot marker key is pressed by the CPU 80A is calculated based on the counted number of frames. As a result of the calculation, the position where the shot marker key is pressed is obtained as, for example, a time code.

In the next step S18, the position where the shot marker key is pressed is set as the IN point, and the point after the IN point by the preset length is set as the OUT point. Further, before and after the range including the IN point and the OUT point, a predetermined additional length is added. Then, the start position information indicating the start of the entire range including the additional length and the end position information indicating the end of the entire range are represented by, for example, time codes, and are transferred from the CPU 80A to the file management unit 43 as VFL. The file management unit 43 registers the transferred VFL in the file management information.

Then, the process returns to step S14. When the recording is continued, the shot marker can be further designated and the VFL can be created based on the designated shot marker by the processing of step S15 and subsequent steps.

The above-mentioned set length and additional length can be set by the user by performing a predetermined operation from the control panel 4, for example. For example, the set length is set to several seconds to ten and several seconds, and the additional length is set to about 1 second. In the above description, the shot marker is specified from the external controller. However, the present invention is not limited to this example. That is, a shot marker key can be provided on the control panel 4 of the A / V server, and a shot marker can be added from the control panel 4.

FIG. 12 shows the VF created as described above.
An example of an editing operation by a shot marker system using L is shown. The time series is expressed in the horizontal axis direction in the figure. This is an example in which three shot markers are provided for input data. As shown in FIG. 12A, the shot marker key is pressed three times during recording, and three VFLs are pressed.
(VFL1, VFL2, and VFL3) have been created.

When the first shot marker is added, VFL1 is automatically generated based on the processing described in the flowchart of FIG. When the VFL1 is generated, the editing operation using the VFL1 can be started. For example, as shown in FIG. 12B, VFL1 is further edited, the IN point and OUT point information of the edited result are set as start position and end position information, respectively, and VFL1 is the edited VFL. VFL1a is created. Of course, not limited to this example, V
A new VFL1a may be created for FL1. As described above, the VFL 1a in which the editing result is registered can be transmitted immediately after registration, as illustrated in FIG. 12C.

Similar processing can be performed for VFL2 and VFL3 by other shot markers shown in FIG. 12A, and as shown in FIG.
2 and VFL3 are new VFLs, respectively.
It is created like FL2a and VFL3a.

As described above, VFL1, VFL2, and VFL3, which are VFLs associated with shot markers, are edited, and the edited results are VFL1a, VFL, which are new VFLs.
Registered as FL2a and VFL3a. These registered VFL1a, VFL2a and VFL3a are:
As illustrated in FIG. 12C, they can be transmitted at any timing.

FIG. 13 shows the VFL shown in FIG.
9 is a flowchart for explaining an editing operation using the "." Step S20 to Step S of this flowchart
The process of 22 is a process that overlaps with a part of the process of the flowchart of FIG. 11 described above.

Here, the description will be made assuming that an editing machine is connected to the port 60B, for example. That is, referring to FIG. 3, the terminal 61B is connected to the video input terminal of the editing machine, and the editing machine is connected to the port 60B according to a predetermined interface standard such as RS-422 (not shown). And communication of various editing commands are performed between the editing machine and the port 60B.

In the A / V server according to this embodiment, editing can be performed using the control panel 4, and an editing command can be output from the control panel 4. By the editing command output from the control panel 4,
Editing operations such as setting of an IN point and an OUT point can be performed in the same manner as an externally connected editing machine. The command output from the control panel 4 is transferred to the control unit 36 via the bus 30A and supplied to the editing unit 51.
The editing unit 51 is controlled by a command supplied from the control panel 4 to perform an editing process or the like.

For example, recording of video data shot by a video camera connected to the port 60A is started. Then, a shot marker is added at an arbitrary position by an operation of an external controller or the like, and the shot marker is transferred to the port 60A (step S20). The CPU 80A of the port 60A creates a VFL using the transferred shot marker (step S21). The created shot marker is registered in the file management unit 43 (Step S22).

In the next step S23, the VFL registered in the file management section 43 is read out by the port 60B according to an instruction from the editing machine. In step S24, an editing operation based on the read VFL is performed. For example,
Under the control of the port 60B, video data is read from the recording / reproducing unit 33 based on the start position information and the end position information described in the read VFL. The read video data is supplied to the editing machine via the terminal 61B, and is displayed on a monitor or the like. The editing machine specifies the IN point and the OUT point with reference to the monitor image.

Information indicating the designated IN point and OUT point is transferred from the editing machine to the port 60B via a predetermined interface, and is supplied to the CPU 80B. As an example, the CPU 80B determines that the supplied IN point and OU
A VFL is created from the information indicating the T point, and the file management unit 4
Register to 3. By registering the VFL in the file management unit 43, the editing result can be transmitted.

As another example, the supplied IN point and O
Based on the information indicating the UT point, it is also possible to actually read data from the recording / reproducing unit 33 and create a new A / V file.

The data edited in this way is sent from the A / V server in step S26. When the editing result is registered as a VFL, data is read and output from the recording / reproducing device 33 based on VFL start position information and VFL end position information. When the editing result is created as a new A / V file, the A / V file created as the editing result is read from the recording / reproducing unit 33 and output. The A / V file output from the recording / reproducing unit 33 is supplied to, for example, the port 60C via the bus 30A, and is led out to the terminal 61C.

[0104]

As described above, according to the present invention, a VFL is created at the time when a shot marker is added, so that editing work can be performed using the VFL without having to wait until recording is completed. The editing can be performed in parallel, and the editing result is set to VFL, which can be transmitted during recording or while other editing is being performed. Therefore, by using the A / V server according to the present invention, there is an effect that the three operations of recording the material, editing the material, and sending the edited material (clip) can be performed simultaneously in parallel.

Further, according to the present invention, when creating a VFL using shot markers, an additional portion of a predetermined length is added before and after, so that troubles such as a delay in pressing a shot marker key can be prevented. There is.

Further, according to the present invention, one A / V
Recording of video data on a recording medium by the server;
Since video data can be read from the recording medium and edited and transmitted, there is an effect that download and record back operations between the video tape recorder and the A / V server become unnecessary.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a data recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a front view showing main parts of a meter panel and a control panel.

FIG. 3 is a block diagram showing a circuit configuration of the data recording / reproducing device according to one embodiment.

FIG. 4 is a schematic diagram schematically showing respective structures of file entry information, record entry information, and free space information.

FIG. 5 is a schematic diagram schematically showing file access by record entry information.

FIG. 6 is a schematic diagram illustrating an example of the structure of a virtual file VFL.

FIG. 7 is a schematic diagram illustrating an example of a description of a virtual file VFL.

FIG. 8 is a schematic diagram illustrating a process of reproducing a file divided and written in different areas using a virtual file VFL.

FIG. 9 is a schematic diagram illustrating another example of a description of a virtual file VFL.

FIG. 10 is a schematic diagram illustrating an example of a VFL created based on a shot marker.

FIG. 11 is a flowchart illustrating an example of a process of creating a VFL using a shot marker.

FIG. 12 is a schematic diagram illustrating an example of an editing operation performed by a shot marker system using a VFL.

FIG. 13 is a flowchart illustrating an editing operation using a VFL.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Data recording / reproducing apparatus, 2 ... Housing, 3 ...
Meter panel, 4 ... control panel, 11 ...
Display unit, 30 Internal bus, 31 Timing management unit, 32 Information management unit, 33 Recording / reproducing unit, 34A to 34D Data management unit, 36 Control , 37A-37D ... data input / output unit, 39 ...
.Special effect part, 41: timing pulse generator, 4
5, 46: HDD, 51: Editing unit, 60A-6
0D: port, 61A to 61D: terminal

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/781 H04N 5/91 N 5/91 (72) Inventor Tatsuo Tsukita 6 Kita Shinagawa, Shinagawa-ku, Tokyo 7-35 within Sony Corporation (72) Inventor Ichiro Fujisawa 6-73, Kita-Shinagawa, Shinagawa-ku, Tokyo F-term (reference) 5C052 AB03 AB04 AC08 CC06 DD04 5C053 FA14 FA23 GB01 GB05 GB06 GB40 HA29 JA21 JA24 KA04 KA08 KA24 LA11 5D044 AB05 AB07 BC01 BC04 CC04 DE38 DE57 GK12 HL16 5D110 AA13 AA17 BB20 CA08 CB03 CC02 CC04 CD02 CD22

Claims (3)

[Claims] 1. A recording medium which has a non-linearly accessible recording medium, wherein a plurality of input / output means assigns data input in a time slot assigned to the recording medium to a recording medium, and assigns data written to the recording medium to an assigned time. A data recording / reproducing apparatus for reading data in a slot, comprising: reproduction range data generating means for generating reproduction range data indicating a reproduction range of an address space of a target file in a fixed length based on trigger information; Data recording and reproducing device. 2. The data recording / reproducing apparatus according to claim 1, wherein the reproduction range data generating means sets a range in which a predetermined additional length is further added before and after the fixed length as the reproduction range. A data recording / reproducing apparatus for creating reproduction range data. 3. A non-linear access recording medium, wherein a plurality of input / output means are assigned to a time slot to which data input is written to the recording medium, and the data written to the recording medium is assigned a time allocated to the time slot. In an editing point information creating method for setting an editing point for data recorded on a recording medium in a data recording / reproducing apparatus read out in a slot, reproduction range data indicating a reproduction range in an address space of a target file based on trigger information. Having a reproduction range data creation step of creating the playback range with a fixed length, and an edit point setting step of setting an edit point based on the playback range data created in the playback range data creation step. The editing point information creation method characterized by the following.