JPH05110975A - Still picture file system - Google Patents

Abstract

PURPOSE:To possess the combination of the data change between a host and a disk of degrees of freedom by respectively possessing both host and disk of attributes thereof. CONSTITUTION:Discrimination data for attribute declaration are registered in recorders 24 to 26 which record a still picture signal ion recording mediums (magneto-optical disks) and controllers 37 and 61 which instruct these recorders 24 to 26 to write the still picture signal. Data indicating whether recording is permitted or not is recorded in each recording medium correspondingly to discrimination data. Only when attributes coincide with each other, data can be changed (written); but otherwise, data write is inhibited. Thus, the number of degrees of freedom on the write protect processing between the host and the disk is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still image file system individually controlled by a plurality of controllers.

[0002]

2. Description of the Related Art In a still picture file system used in a broadcasting station or the like, a magneto-optical disk may be used for storing and reading a still picture. FIG. 5 is a block diagram showing an example of a still image file system using such a magneto-optical disk. For example, this system uses the system already filed by the applicant as “Japanese Patent Application No. 2-77425”. can do.

In FIG. 5, reference numeral 1 denotes the overall structure of a still picture file system used in a news program broadcasting site, which is provided in a director room 2, a still picture preparation room 3, a machine room 4, a studio 5 and a program control room 6. Broadcast equipment is installed.

In the director room 2, a workstation 20 for transmitting / receiving control commands and creating a playlist,
Magneto-optical disk 2 with still image files
1, a library 22, a monitor 23 for displaying still images, and three magneto-optical disk devices 24, 25, 26 are provided.

The workstation 20 is connected to the still image file control device 40 in the machine room 4 via a signal line RS1 based on the RS-422 interface standard so that it can send and receive control commands.

The first magneto-optical disk device 24 is connected to the still image file control device 40 by a signal line and a coaxial cable RV1 based on the RS-422 interface standard, and transmits and receives a control command through the signal line and the coaxial cable. Through SMPTE / D-1 format, digital component video signals can be transmitted and received.

In addition to this, the first magneto-optical disk device 2
4 is SCSI (Small Computer System Interface)
The standard expansion buses SC1 and SC2 are provided.
The second and third magneto-optical disk devices 25 and 26 are connected in series through C1 and SC2. Monitor 23
An analog video signal is input from the still image file controller 40.

A television camera 30, a video tape recorder (VTR) 31, a character generating device 32, and a magneto-optical disk device 33 are arranged in the still image creating room 3 as video devices for inputting still image information.

A video switcher 34 for selecting the video signals VD30, VD31, VD32, VD33 sent from the video devices 30 to 33 and an input video signal VDIN input from the outside, and the video signal VDST selected by this are input. , And a drawing device 35 that creates a predetermined still image.

The drawing device 35 has a microcomputer configuration including a CPU (central processing unit) and a command input device such as a keyboard and a mouse. While displaying the input video signal VDST on the monitor 36,
Video signal V by operating the keyboard and mouse
One frame of DST is cut out as a still image, and the character generator 32 is further controlled to add character information or the like to this still image to create still image data DTST.

The still image data thus created is filed on the predetermined magneto-optical disks 24, 25 and 26 together with predetermined identification information by operating the controller 37 for command transmission.

In the case of this embodiment, the drawing device 35 is connected to the still image file control device 40 in the machine room 4 by a coaxial cable VD2 so that an analog video signal can be sent out.

The controller 37 is connected to the still image file controller 40 by a signal line RS2 based on the RS-422 interface standard so that it can send and receive control commands. The video switcher 34 is connected to the still image file control device 40 by the coaxial cable VD3, and the analog video signal VDIN is input.

In the program control room 6, there are a magneto-optical disk device 60 in which a still image file is filed, a command input controller 61 for reading out and sending out the filed still image signal, and a switcher 41 provided in the machine room 4. A switch operation console 62 for control, a still image monitor 63 for an index screen which displays a plurality of reduced images of still images to be transmitted according to a playlist, and an on-air which monitors a broadcast television signal actually transmitted as a news program. A monitor 64 is provided.

The magneto-optical disk device 60 is connected to the still image file control device 40 in the machine room 4 by a signal line and a coaxial cable RV based on the RS-422 interface standard.
It is configured to be connected by means of 2 and can transmit and receive control commands through signal lines and can also transmit and receive digital component video signals according to the SMPTE / D-1 format through coaxial cables.

The controller 61 and the switcher console 62 are connected to the still image file controller 40, the switcher 41 and the VTR 42 in the machine room 4 by a signal line RS3 based on the RS-422 interface standard so that control commands can be transmitted and received. Has been done.

Still image monitor 63 and on-air monitor 6
4 is connected to the switcher 41 in the machine room 4 by coaxial cables VD4 and VD5, and an analog video signal is input.

In the machine room 4, a still image file control device 4
0, a switcher 41 and a VTR 42 are provided, and a still image transmission video signal VDSTL and a still image index screen video signal VDIDX transmitted from the still image file control device 40, and a VTR transmitted from the VTR 42.
The reproduced video signal VDVTR and the television camera video signal VDTVC sent from the television camera 50 arranged in the studio 5 are input to the switcher 41, respectively.

The switcher 41 is based on a control command input from the controller 61 of the program control room 6 and the switcher console 62, and outputs a still image transmission video signal V.
The DSTL, the VTR playback video signal VDVTR and the television camera video signal VDTVC are selected and sent to the broadcasting equipment (not shown) as the broadcasting television signal VOA of the news program, and also sent to the on-air monitor 64 for monitoring them. To do.

The switcher 41 sends to the still picture monitor 63 a still picture index screen video signal VDIDX which is updated every time a still picture is sent.

In practice, the still image file control device 40 includes a CPU (central processing unit) and a normal CPU inside.
In addition to the bus, it has a microcomputer configuration including a video bus adapted to transmit a digital component video signal conforming to the SMPTE / D-1 format in real time.

The video bus of the still picture file controller 40 has a coaxial cable connector and an RS-connector, respectively.
An interface board for a magneto-optical disk device (hereinafter, referred to as MOI / F board) in which a connector for a signal line based on the 422 interface standard is provided and which has a frame memory for storing one frame of a video signal.
And an interface board for inputting / outputting video signals and control commands (hereinafter referred to as an IO I / F board)
And are connected.

In practice, MOI / F board and IOI /
The F-board has the same built-in protocol and therefore I
The controllers 37, 61 connected to the OI / F board, the monitor 23, etc. are directly connected to the magneto-optical disk devices 24, 60 connected to the MOI / F board, and the controllers 37, 6 are connected.
When 1 is operated and a read command is input, a desired still image signal is read from the still image file stored in the magneto-optical disk loaded in the magneto-optical disk devices 24 and 60, and this is displayed on the monitor 23 or the like. can do.

As a result, the still image file control device 40 can control the creation, writing, reading and sending of the still image according to the commands input from the controllers 37, 61 and the like.

In the still image file apparatus 1 having such a configuration, the director who is in charge of news program production identifies the magneto-optical disk 21 to store the still image production according to the contents of the news program produced. An order is placed in the still image creating room 3 together with a disc ID which is information and a picture ID which is identification information of a still image signal to be created.

Thereafter, the director operates the workstation 20 in the director room 2 to switch the order of sending the ordered still images and the switching of still images such as wipes and dissolves in accordance with the broadcasting order of the news program and the broadcasting method. Create a playlist by specifying the switching time.

In parallel with this, the person in charge of still picture creation in the still picture creation room 3 receives a video signal VD30 obtained by, for example, taking a picture with the television camera 30 according to the content of the still picture instructed by the director. A reproduced video signal VD31 obtained by reproducing the video tape on the VTR 31, and a reproduced video signal VD3 obtained by reproducing on the magneto-optical disk device 33.
3. Switcher 34 for external video input signal VDIN, etc.
Is controlled to selectively input to the drawing device 35.

As a result, the video signal VDST input to the drawing device 35 is displayed on the monitor 36, and when the person in charge of creating a still image cuts out the video signal VDST at a desired still image position while visually checking, the still image is displayed. It is displayed on the monitor 36.

In this state, the person in charge of creating a still image controls the character generator 32 by operating a keyboard, a mouse or the like, thereby generating character data such as a description of the still image displayed on the monitor 36, The still image data DTST is created by superimposing this on the still image and the monitor 36
Displayed in.

As a result, if the person in charge of creating the still image determines that the still image data DTST displayed on the monitor 36 conforms to the instruction from the director, he / she adds the disc ID and the picture ID designated by the director,
Still image file controller 40 using controller 37
To send to.

In practice, the still image file control device 40 confirms the disk ID of the loaded magneto-optical disk with respect to the plurality of magneto-optical disk devices 24 and 60 connected to the MOI / F board every predetermined period. Command is transmitted, and as a result, the disc ID of the magneto-optical disc loaded in each of the magneto-optical disc devices 24, 60 can be detected.

In the case of this embodiment, the second and third magneto-optical disk devices 25 and 26 connected to the first magneto-optical disk device 24 through the SCSI expansion buses SC1 and SC2 are provided with the optical disks loaded therein. The disk ID of the magnetic disk is constantly managed by the magneto-optical disk device 24.

Therefore, if the still image file control device 40 sends a disc ID confirmation command for the magneto-optical disc loaded in the magneto-optical disc device 24, the still image file control device 40 sends it to the first to third magneto-optical disc devices 24 to 26. It is possible to detect the disc IDs of all the loaded magneto-optical discs, so that the still image file controller 40 can consider that the magneto-optical disc device 24 is loaded with three magneto-optical discs. Has been done.

Thus, the still image file control device 40
Is a magneto-optical disk device 24, 60 loaded with a magneto-optical disk having a disk ID designated by the controller 37.
Is detected and the still image data DTST is sent together with the write command to the corresponding magneto-optical disk devices 24 and 60 through the MO I / F board, and in this way the picture ID specified by the director on the desired magneto-optical disk. The still image data DTST is stored and a still image file is formed.

In practice, the director is before and after this, the controller 61 and the switcher console 6 in the program control room 6.
2, the workstation 20 is accessed to read the still image data DTST stored in a predetermined magneto-optical disk through the still image file controller 40 according to the playlist created in advance.

As a result, the still image index screen is created, and as a result, the still image index screen video signal VDIDX is sent to the still image monitor 63, and the still image index screen is displayed.

In the system diagram shown in the figure, the relationship between the still image file device (mainframe) 40 and the controllers 20, 37, 61 for accessing the magneto-optical disk devices 24, 25, 26 and the like via this is shown. An excerpt and an illustration are shown in FIG.

This still image file system is constructed so that the magneto-optical disk device can be accessed from all of the plurality of controllers 20, 37, 61 via the still image file device 40 in order to be compatible with multiple users. Has been done. Further, the function of this system is such that the recording medium (magneto-optical disk loaded in the magneto-optical disk device) can be freely replaced.

[0039]

Therefore, since the data on the disk can be freely changed by a plurality of controllers, the rewriting of the data is permitted even for the disk which requires the protection in particular. .. If this happens, the data on the library disk may be erroneously rewritten, so write protection processing for the disk is required.

As a method of prohibiting the change (write protect), it is conceivable to use a physical write protect switch attached to each magneto-optical disk or to record the write protect data by software.

However, these methods allow the write protect mode to be selected for the disk itself, but on the other hand, for a disk which is not write protected, it can be changed by any controller. For the same reason, rewriting cannot be permitted by any controller for a disk that is write-protected. Therefore, the degree of freedom for the disk and the controller is small.

Therefore, the present invention has solved such a problem, and by giving attributes to both the disk and the controller, it is possible to increase the degree of freedom regarding the rewriting of data between the disk and the host. It was done.

[0043]

In the still image file system according to the present invention described above, a recording device for recording a still image signal on a recording medium and a plurality of controllers for instructing the recording device to write a still image signal are provided. It is possible to register identification data, record data indicating whether recording is possible in association with the identification data on the recording medium, and set a write-protected state to a predetermined controller of the plurality of controllers. It is the one.

[0044]

When the disk is formatted, the attribute (identification code) of whether or not the disk is a library disk, that is, whether or not data rewriting is permitted from the outside is recorded. And the controller (hereinafter called the host)
The side declares attributes for the disc. Data can be changed only when the declared attribute matches the disc attribute. For example, host X declares attribute 1 and host Y declares attribute 3. Attribute 1 is recorded on the disk A, and attribute 2 is recorded on the disk B.

When there is such a relationship, the host X
Can be changed only on the disk A, and data cannot be changed on the disk B. Regarding the host Y, data can be changed for the disks X and Y respectively.

By setting and declaring such an attribute, it becomes possible to selectively set write protection on the disk, and it is also possible to individually and arbitrarily set rewriting on the disk of the host.

[0047]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of a still image file system according to the present invention will be described in detail with reference to the drawings.

The still image file system used in the present invention can use the system shown in FIG. 5, so a detailed description thereof will be omitted, but the magneto-optical disk devices 24, 25, 26, 33, 60 are loaded. Each of the magneto-optical discs is a controller 20, 37, 6 which is a host, depending on the setting method of the attribute recorded in itself.
From 1 (depending on the method of declaring the attribute), rewriting is enabled or disabled.

That is, according to the present invention, the attribute set in the disk and the declaration of the attribute of the host are checked, and the request from the host is accepted only when both attributes match.
Allows modification of data to that disk. The attribute is the identification code of the host or disk.

Therefore, in this example, 1 byte is assigned to the attribute, and the attribute of the disk is represented by a bit map. Bitmaps are recorded for each disc.

If any host can respond to the data change request, the attribute of the disk is set to, for example, "0" (in binary number, 00000000). On the other hand, on the host side, in order to be able to rewrite data to a disk having any attribute, as an attribute declared on the host side, for example, "255"
Fill (11111111 in binary).

The attributes of the disk are systematized so that they can be set by the host, and in this example, the attributes are recorded when the disk is formatted. You can also change the attributes of the disc. In this case, the attributes on the host side are declared in advance, and the attributes on the disk side can be changed only when the attribute allows the disk to be changed. The attributes of each host and disk are
Both are stored in the memory (RAM) of the still image file device 40 and used for comparison processing and the like.

A concrete example will be described below. For convenience of explanation, 3
Consider a host X, Y, Z and three disks A, B, C. For example, host X declares attribute 1 (binary number 00000001) Host Y declares attribute 3 (binary number 00000011) Host Z declares attribute 255 (binary number 11111111) while disk A attributes 1 (2 Disk B has attribute 2 (binary number 00000010) Disk C has attribute 0 (binary number 00000000) When host X is set to host A, data can be changed to disk A Y can be changed for the disks A and B. The host Z can be changed for the disks A, B and C.

Next, a flowchart of general operation will be described. (1) Operation Performed by Host The operation will be described with reference to FIG. 1. Since the flowchart shown in this figure is expressed by using the method of SPD (Structured Programming Diagram), the code corresponding to each operation step is Not attached.

In FIG. 1, as the operation of the host, first, when the power of the host is turned on, initialization is performed immediately, and then the attributes of the host itself are declared. This attribute declaration is made in the initial program or the attribute change program, and when the attribute declaration is completed, normal operation is performed. (2) When the system receives a declaration of an attribute In this case, as shown in FIG. 2, when the declaration is received, the declared attribute of this attribute is the still image file device 40.
Is stored in the memory (RAM). (3) When the disc is loaded in the magneto-optical disc device When the disc is loaded in the magneto-optical disc device 24 or the like, whether or not the disc is loaded is checked as shown in FIG. 3, and when it is determined that the disc is loaded, the disc is loaded. The attribute recorded in is read and this is the RAM described above.
Memorized in. (4) When the system receives a command to change the contents of the disc In this case, when a command to change (rewrite or delete) the contents of the disc is received as shown in FIG.
Next, check whether the disk attributes and host attributes match.
Judgment based on the data stored in M, and if they match, command execution (rewriting or deletion)
To do.

If they do not match, an error is returned to the host side. If you want to change the data, change the host attributes and redeclare. Then, the attributes match and the data can be changed.

From the above, when the system is set so that the attributes are set on the disk and the attributes of the host are declared, the following characteristics can be given. (A) The disc can be managed by a plurality of applications. For example, when disks A and B exist and hosts X and Y exist, by declaring the attributes as described above, disk A can be changed from host X. disk B can be changed from hosts X and Y. As is possible, the relationship between the disk and the host can be set arbitrarily. (B) The specific write protection can be canceled by changing the attribute of the disc. For example, disk A and host X,
When Y is present, the disk A that could not be changed by the hosts X and Y at the beginning can be reconfigured so that it can be changed by the host X by changing the attribute of the disk A. (C) By allowing attributes to be declared for each host, write protection can be released without changing the attributes of the disk. For example, disk A, B and host X,
When Y is present: -disk A has attribute 1-disk B has attribute 2-host X and Y declare attribute 1 as follows: host X can only change disk A, but-host When X declares attribute 2, it becomes possible for host X to change disk B, and for host Y, disk B remains unchanged.
Can not be changed. In this case, the disk A cannot be changed, but the host X can change both the disks A and B by changing the attribute 3 as in the declaration.

[0058]

As described above, in the still image file system according to the present invention, the attribute setting for the recording medium,
It is configured so that the attributes of the controller for instructing the writing of the still image signal can be declared.

According to this, since the data can be changed only between the host and the disk having the same attribute, the data can be protected and the degree of freedom of writing the data can be provided. .. Therefore, the present invention is extremely suitable when applied to a still image file system in which a disk is managed by a plurality of controllers.

[Brief description of drawings]

FIG. 1 is a flowchart showing an attribute declaration made on a host side in a still image file system according to the present invention.

FIG. 2 is a flowchart showing an operation example when the system receives a declaration of an attribute.

FIG. 3 is a flowchart showing an operation example when a disc is loaded.

FIG. 4 is a flowchart showing an operation example when the system receives a disc content change command.

FIG. 5 is a system diagram showing an example of a still image file system to which the present invention can be applied.

FIG. 6 is a schematic diagram mainly illustrating a still image file device.

[Explanation of symbols]

 24, 25, 26, 33, 60 Magneto-optical disk device 20 Workstation (host) 37, 61 Controller (host) 40 Still image file controller (mainframe)

Claims (1)

[Claims] 1. A recording device that records a still image signal on a recording medium, and identification data is registered in a plurality of controllers that instruct the recording device to write a still image signal, and the recording medium corresponds to the identification data. The still image file system is characterized in that data indicating whether or not recording is possible is recorded so that a predetermined controller of the plurality of controllers can be write-protected.