JP2002027374A - Apparatus and method for information recording as well as apparatus, method and system for information processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the trouble such as generation of a noise caused by sending image signals of wrong systems to edit by a method wherein meta-data related to an image signal is detected precisely and quickly before starting, e.g. editing. SOLUTION: When the image signal is recorded on a magnetic tape 30, meta-data related to the recording system of the image signal is recorded in a memory tag 37. On the basis of the meta-data which is read out from the memory tag 37, a setting regarding an image signal inside an editing device 74 is controlled, and a warning is generated when the recording frequency of the image signal to be edited does not agree with a data bit rate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording apparatus and method for recording unique identification information related to information materials recorded on various types of removable recording media, an information processing apparatus and method, and an information processing system.

[0002]

2. Description of the Related Art Conventionally, as one of standards for digital video signals, ISO (International Organization for International Organization) has been adopted.
Standardization) / SMPTE (Society of Motion P)
icture and Television Enginieers). In particular, for SMPTE 298M and 335M,
Metadata that defines attributes, storage locations, sizes, etc. of material data such as digital video signals is defined, and its metadata dictionary (Metadata diction)
ary) can be used to centrally manage metadata. The metadata dictionary contains:
For example, hundreds of items such as titles, staff names, and shooting locations are defined.

[0003] The above-mentioned metadata is useful information for knowing the features of materials such as video and audio.
The compatibility is extremely high because it is uniquely defined by / SMPTE, and is considered to be able to greatly contribute to database management and automation of material exchange between other companies.

[0004]

There are various types of removable recording media for recording signals of the above-mentioned materials such as video and audio. Among them, for example, a tape-shaped recording medium is stored in a cassette. A so-called cassette tape is widely used as a recording medium capable of recording and reproducing a material signal such as a long-time video and audio. Another advantage is that the removable recording medium can be mounted on various recording and reproducing devices.

On the other hand, there are various types of data formats of material signals such as video and audio, and material signals recorded on the removable recording medium often vary depending on the format supported by the recording / reproducing apparatus that has performed the recording. is there.

For example, when a video signal is taken as an example of the material signal, the video signal recorded on the recording medium is converted into a different format (for example, a video recording frequency or a data bit rate in a system capable of varying the data amount). If such a reproduction is performed, noise is generated in the reproduced video signal, or the reproduction of the video itself becomes impossible.

For this reason, conventionally, when a material signal is recorded on a removable recording medium, information on the data format of the material signal and the like is recorded together with or after the recording of the material signal. As one of the data, it is considered to be recorded in some way.

As a method of recording metadata such as the data format, for example, a method of providing a contact-type memory in a case of a removable recording medium or the like and recording the metadata in the contact-type memory (hereinafter referred to as a first recording method) Method, or a method of recording in a predetermined area (for example, a user bit portion of a time code) that is recorded separately from the material signal on the removable recording medium (hereinafter, referred to as a second method).
Recording method), and a method of recording in the same area as the material signal recorded on the removable recording medium (hereinafter, referred to as a third recording method).

However, the first to third recording methods have the following problems.

That is, in the first recording method, since metadata is read and written through the contact of the contact type memory,
There is a problem in reliability, for example, a data transmission / reception error occurs due to a poor contact at the contact point. In addition, if the number of contacts is reduced in order to reduce the probability of occurrence of contact failure, there is a problem that the access speed is reduced.

In the second recording method, it is necessary to load a recording medium into a device for reproduction, so that a certain amount of time is always required for reading and writing of metadata, resulting in poor accessibility. In addition, when the user bits are to be recorded as described above, if the user bits are rewritten, it is necessary to rewrite the entire time code, and the rewriting cannot be performed easily. Further, the user bit may be used for another purpose. In this case, the user bit cannot be used, and it can be said that the second recording method using the user bit has low versatility.

In the third recording method, it is necessary to load a recording medium into a device and perform reproduction. In addition, in order to read and write metadata, the same area where a material signal is recorded is used. Must be played, very time consuming and poorly accessible. Further, when the metadata is superimposed on the material signal of the medium, it cannot be substantially rewritten.

In the case of the second and third recording methods,
Since the device must be loaded with recording media and played back, for example, if already operated by another system, etc., the device must be reconfigured to match the recording media during operation, etc. There are many operational restrictions. In the case of the first recording method, the reproduction of the recording medium is unnecessary. However, the information in the contact memory cannot be read unless the recording medium is loaded in the device. Pre-processing such as inserting and confirming data is required.

As described above, as a problem common to the first to third recording methods, necessary data cannot be read out unless a target recording medium is inserted into a recording / reproducing apparatus. May occur.

The above-mentioned problem can be dealt with to some extent by any of the above three recording methods, for example, if the operation is performed only by the recording / reproducing apparatus alone. In the case of a system that performs the same method, it is necessary to make the same settings for the entire system, that is, for editing, the settings of each device constituting the system must be the same before starting the transmission work. It is very likely that various failures will occur.

Accordingly, the present invention has been made in view of such a situation, and, among material signals recorded on a recording medium, particularly, metadata relating to a video signal, for example, an operation such as editing and transmission. Information recording apparatus and method, information processing apparatus and method capable of accurately and promptly detecting before starting, and preventing problems such as generation of noise due to editing of video signals of the wrong system beforehand And an information processing system.

[0017]

SUMMARY OF THE INVENTION An information recording apparatus according to the present invention, when recording a video signal on a replaceable recording medium, generates metadata related to the video signal; A read / write device which operates in response to transmit / receive information to / from the outside in a non-contact manner through the electromagnetic field and write / read information to / from a non-contact type information storage means attached to or incorporated in the replaceable recording medium. Means for writing the metadata related to the video signal to a predetermined storage area of the non-contact type information storage means, thereby solving the above-mentioned problem.

Further, the information recording method of the present invention, when recording a video signal on a replaceable recording medium, generates metadata related to the video signal, and operates in response to an electromagnetic field. Transmitting and receiving information to and from the outside in a non-contact manner through an electromagnetic field, and writing and reading information to and from a non-contact type information storage means attached to or incorporated in the replaceable recording medium. The above-described problem is solved by writing related metadata into a predetermined storage area of the contactless information storage unit.

Next, the information processing apparatus of the present invention operates in response to an electromagnetic field, and transmits or receives information to / from the outside through the electromagnetic field in a non-contact manner and is attached or incorporated in a replaceable recording medium. A capturing unit that captures information read from the non-contact type information storage unit, and a metadata written as data related to a video signal recorded on the recording medium in the non-contact type information storage unit. The above-described problem is solved by having a setting control unit that matches a setting related to a video signal of a device with a setting corresponding to the metadata.

Further, the information processing method of the present invention operates in response to an electromagnetic field, transmits / receives information to / from the outside through the electromagnetic field in a non-contact manner, and is attached to or incorporated in a replaceable recording medium. Taking in the information read from the contact-type information storage means, and, based on the metadata written as data related to the video signal recorded on the recording medium, Adjusting the setting relating to the video signal to the setting corresponding to the metadata, thereby solving the above-described problem.

Next, the information processing system of the present invention, when recording a video signal on a replaceable recording medium, generates metadata relating to the video signal, and a metadata generating means in response to an electromagnetic field. A writing / reading means for operating and transmitting / receiving information to / from the outside in a non-contact manner through the electromagnetic field and for writing / reading information to / from a non-contact type information storage means attached to or incorporated in the replaceable recording medium. An information recording device that writes metadata related to the video signal into a predetermined storage area of the non-contact information storage means, and operates in response to an electromagnetic field, and operates in a non-contact manner through the electromagnetic field. Capturing means for capturing information read from non-contact type information storage means attached to or incorporated in a replaceable recording medium for transmitting and receiving information to and from the outside; The information storage means has setting control means for adjusting settings related to the video signal of the device to settings corresponding to the metadata based on metadata written as data related to the video signal recorded on the recording medium. By providing an information processing device, the above-described problem is solved.

Further, the information processing method of the present invention, when recording a video signal on a replaceable recording medium, generates metadata related to the video signal, and operates in response to an electromagnetic field. It transmits and receives information to and from the outside in a non-contact manner through an electromagnetic field, and writes metadata related to the video signal in a predetermined storage area of a non-contact information storage means attached to or incorporated in the replaceable recording medium. Reading the metadata related to the video signal from the predetermined storage area of the non-contact information storage means; and reading the video of the device based on the read metadata related to the video signal. Adjusting the setting relating to the signal to the setting corresponding to the metadata to solve the above-described problem.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration of a video tape recorder (hereinafter, referred to as VTR) for recording and reproducing a high definition digital video signal as a first embodiment of the present invention.

A video input terminal 1 is connected to an SDI (Serial Digital Data Interface) from a video camera, for example.
A video signal (for example, a video signal of 1080/60 interlace) supplied in the form of an ANC (Ancillary) data packet is input. This video signal is amplified by the input amplifier 2 and the SDI ANC extraction unit (Extract Integr.
ated Circuit) 3. The main video signal output from the SDI ANC extraction unit 3 is output to the video compression unit 4
Sent to The SDI ANC data packet will be described later.

The video compression section 4 compresses the video signal into an information amount of about 1/7 by a predetermined compression encoding method. The video signal compressed by the video compression unit 4 is
It is sent to an ECC (Error Correcting Code) encoder 5.

The ECC encoder 5 adds an error correction code to the compressed video signal. The output from the ECC encoder 5 is passed through a recording signal processing unit 6 that performs modulation processing and gain control for recording, is further amplified by a recording amplifier 7, and is then provided on the circumference of the rotating drum 25. Is sent to the recording head 8.

A magnetic tape pulled out of the housing of the video cassette 31 (hereinafter, the video cassette is simply referred to as a cassette and the housing of the cassette is referred to as a cassette half) is mounted on the rotating drum 25 by a tape loading mechanism (not shown). 30 is wound at a predetermined winding angle and with a constant tension, and
5 is rotationally driven at a predetermined speed by a drum rotation motor (not shown). The supply reel 33 and the take-up reel 34 are rotated by a reel motor (not shown) and run at a predetermined speed by a capstan motor (not shown). In this state, the recording head 8 records a signal on the magnetic tape 30 by a so-called helical scan (oblique scan).

On the other hand, when reproducing the signal recorded on the magnetic tape 30, the magnetic tape 30 is wound around the rotating drum 25 at a predetermined winding angle and at a constant tension in the same manner as described above. In a state where the magnetic tape 30 is driven to rotate at a predetermined speed and the magnetic tape 30 runs at a predetermined speed, the rotating drum 25 is rotated.
Of the magnetic tape 30 reads signals from the magnetic tape 30 by a so-called helical scan.

A signal read from the magnetic tape 30 by the reproducing head 10 is amplified by a reproducing amplifier 11, subjected to waveform equalization and demodulation by a reproducing equalizer 12, and sent to an ECC decoder 13.

The ECC decoder 13 performs an error correction process using the error correction code added to the signal from the reproduction equalizer unit 12, and performs a signal after the error correction process (a compression-encoded video signal). To the video decompression unit 14.

The video decompression unit 14 uses a decompression decoding method corresponding to the compression encoding method in the video compression unit 4 to
The compression-encoded video signal is expanded and decoded into an original video signal (for example, a 1080/60 interlace video signal). The video signal after the decompression decoding is sent to the SDI ANC adding unit 15 described later.

The SDI ANC adding section 15 uses the SD
The video signal converted into I serial data is amplified by an output amplifier 16 and then output from a video output terminal 17.

In FIG. 1, although the audio signal processing system is not shown, it is processed on a time-division basis with the video signal and recorded on the magnetic tape 30 by the recording head 8 on the rotating drum 25. The read data is read from the magnetic tape 30 by the reproducing head 10.

A label 32 on which, for example, the title of the content recorded on the tape is written by handwriting or printing is attached to the cassette half of the cassette 31 of the present embodiment. Although the illustration is simplified in FIG. 1, the label 32 has, for example, EEPRO
A semiconductor memory such as an M (Electically Erasable and Programmable ROM) which does not require a record holding operation and is rewritable; Coil antenna 36 for supplying power and transmitting / receiving signals
A non-contact type memory tag 37 having a built-in memory is provided.

That is, the contactless memory tag 37 is
Reader / writer unit 26 serving as a dedicated writing / reading device
, A function of obtaining energy by electromagnetic coupling between the coil antenna 24 provided in the tag 37 and the coil antenna 36 built in the tag 37, a write command and data are received, and the IC is operated in response to the write command. Chip 35
A function of writing data to a semiconductor memory in the memory, and reading data from the semiconductor memory in response to a read command;
And a function of returning the read data by the electromagnetic coupling.

In the example of FIG. 1, the reader / writer 26
Built in the TR, the main component is the label 3
And a dedicated interface for transmitting commands and transmitting and receiving data between the coil antenna 24 for performing electromagnetic coupling with the coil antenna 36 in the non-contact type memory tag 37. And a portion 23. The interface unit 23 of the reader / writer 26 cooperates with the coil antenna 24 to
Power is supplied to the memory tag 37, and when writing data to the memory tag 37, the write command and write data supplied from the CPU 21 are modulated and transmitted to the memory tag 37. When reading, C
The read command supplied from the PU 21 is modulated and transmitted to the memory tag 37. In response to the read command, the data read and returned from the memory tag 37 is demodulated and transferred to the CPU 21. The details of the non-contact type memory tag 37 and the reader / writer 26 will be described later.

Here, the video tape recorder of the first embodiment uses information representing the attributes and contents of the video signal recorded on the magnetic tape 30 (or the video signal recorded on the magnetic tape 30). , Storage location, size, etc. related to the video signal, eg, SMPTE 298
M and 335M can be recorded / reproduced together with the video signal. Note that SMPTE2
Details of the metadata defined by 98M and 335M will be described later.

For example, when metadata is superimposed on an input video signal supplied to the video input terminal 1, these metadata are stored in an SDI A signal as shown in FIG. 2 or FIG.
It will be superimposed as an NC packet. In addition,
FIG. 2 shows the format of the component ANC data packet, and FIG. 3 shows the format of the composite ANC data packet. The component ANC data packet shown in FIG. 2 is a three-word ANC data flag (AD) indicating the beginning of the ANC data packet.
F) and the data format to be used is type 1 or secondary data ID in which the data block number (DBN) and the data count (DC) follow.
Data ID (DID) that defines type 2 that is a format that follows (SDID) and data count (DC)
And the secondary data ID (SDID) or data block number (DBN) and data count (DC)
And up to 255 user data words (UDW)
And a checksum (C). The composite ANC data packet shown in FIG.
The NC data flag (ADF) and the data ID (DI
D), the secondary data ID (SDID) or the data block number (DBN), and the data count (D
C), a user data word (UDW), and a checksum (C).

In these ANC data packets,
The metadata is described in a user data word (UDW). Note that the detailed description is omitted here because it is defined in SMPTE 298M and 335M, but the metadata defined in SMPTE 298M and 335M is, for example, the one shown in FIGS. Can be mentioned. Note that the metadata shown in FIGS. 4 to 6 are a part of those defined in SMPTE 298M and 335M. The SMPTE 298M, 3
As shown in FIGS. 4 to 6, the metadata of 35M is roughly divided into SMTPE labels (labe) as keys.
l), a length (Length) indicating the length of the data, and a value (Value) indicating the content, and are defined as values in the KLV system. These metadata are composed of various information related to the video and audio material, and include, for example, title, title type, subject (main title), subtitle, other, series No., episode No.
Various data used at the time of editing described later, such as a scene No., a take No., and a video source device, are also included.

Returning to FIG. 1, the SDI ANC of FIG.
The extraction unit 3 extracts the metadata from the user data word (UDW) of the ANC data packet as shown in FIGS. The metadata extracted by the SDI ANC extraction unit 3 is sent to a CPU (Central Processing Unit) 21 and further stored in a RAM 22 under the control of the CPU 21.

For example, information obtained from an external input terminal, information obtained from various attached devices and equipment, information related to the device such as the model name and serial number of the VTR, The information such as the current date and time generated by the user, information input by the operator from an operation panel 28 provided on the front panel of the VTR, and the like are also processed, converted, combined, and the like as necessary, and are stored in the metadata. Is similarly written in the RAM 22.
For example, when the metadata is directly supplied from the RS-422 terminal 27 as the information of the format of the RS-422, the metadata is also transmitted to the RA via the CPU 21.
Written to M22.

Further, information already written in the non-contact type memory tag 37 provided on the label 32 and read out from the memory tag 37 is similarly written in the RAM 22 via the CPU 21. That is, the label 32 provided with the non-contact type memory tag 37 is attached to the cassette half of the unrecorded tape in advance. When information such as related information and various ID codes is already written in the semiconductor memory of the memory tag 37, the information is read from the semiconductor memory of the memory tag 37 by the reader / writer 26 as necessary, and The data is written to the RAM 22.

As described above, in the first embodiment of the present invention, all information such as information related to video and audio recorded on the magnetic tape 30 of the cassette 31 is temporarily stored in the RA.
It will be stored on M22. The RAM 2
Various formats are conceivable for the format of data stored on the SMPTE 298M, 335
It may be the metadata itself defined by M, or may be those obtained by further converting or processing them.

The information (metadata) stored in the RAM 22 is arranged on the RAM 22 by the CPU 21 and then sent to the ECC encoder 5, where the information (metadata) is transferred to the Aux sync block in the video and audio data recording format shown in FIG. Embedded, as well as video and audio signals,
The recording is performed on the magnetic tape 30 by the recording head 8.
Note that the video and audio recording data formats shown in FIG. 7 are one-track recording formats on the magnetic tape 30 and are known, so detailed description thereof will be omitted here. ,
It is arranged between the head of video 1 (Video1) in FIG. 7 and outer parity 1 (Outer Parity1).

A VTR for recording a high-definition video signal
The format of the ux sync block is defined, for example, as shown in FIGS. Since the format of these aux sync blocks is also known, the detailed description thereof is omitted here. However, the metadata is obtained from the data number (Data No.) D126 of the category 8 in FIG. D169 is written to the 44 bytes. Also, data numbers D52 and D5 of category 4
3, a model name, D54 to D56, a serial number, a category 5 data number D58 to D61, a recorded date, and a category 6, data number D62, a recording frequency and the number of effective lines. VTR status information is described.

The metadata already recorded on the magnetic tape 30 and other necessary information (for example, other information recorded in the Aux sync block) are also reproduced.
After being arranged on the RAM 22 by the PU 21, the label 3
The data is written to the semiconductor memory of the non-contact type memory tag 37 provided in 2.

Here, when reproducing the metadata recorded on the magnetic tape 30, the ECC decoder 13
Then, metadata embedded in the Aux sync block of the signal read from the magnetic tape 30 by the reproducing head 10 is extracted and sent to the CPU 21. The metadata sent to the CPU 21 is temporarily stored in the RAM 22.

On the other hand, when reproducing the metadata recorded in the semiconductor memory of the memory tag 37 of the label 32,
The metadata is read from the memory tag 37 by the reader / writer 26, and is read from the RAM 22 via the CPU 21.
Is stored once.

When the information (metadata) stored in the RAM 22 is output, for example, superimposed on a video signal, it is arranged on the RAM 22 by the CPU 21 and then the SDI ANC adding unit 15 converts the video signal into the SDI ANC packet. Will be superimposed and output. When the information (metadata) stored in the RAM 22 is directly output from the RS-422 terminal 27, the CPU 2
1, after sorting on the RAM 22, the above RS-422
The signal is output from the terminal 27.

Further, although details will be described later, when editing or the like is performed, of the metadata stored in the RAM 22, for example, cue points based on time code data are provided on the operation panel 28 as necessary. Is displayed as a cue point list on the displayed monitor 29,
At this time, for example, after the operator operates the operation panel 28 to select and cue up any time code data from the cue point list displayed on the monitor 29, for example, the operator is provided on the operation panel 28. When positioning is performed by operation of a jog dial or the like (not shown) and a login and logout instruction is given, the time code data of the login and logout is stored in the CPU 21.
Is written to the RAM 22 via the. The time code data is arranged by the CPU 21 on the RAM 22 according to the operation of the operation panel 28 by the operator, for example.
The data is written to the memory tag 37 via the interface unit 23 and the coil antenna 24.

Next, FIG. 10 shows a schematic configuration of a camera-integrated VTR as a second embodiment of the present invention. In FIG. 10, the same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. The configuration of FIG. 10 differs from the configuration of FIG. 1 in that the former stage (video signal input system) of the video compression unit 4 is configured by a video camera, and that the video decompression unit 14
(The video signal output system) is configured by an external adapter 42.

In the camera-integrated VTR according to the second embodiment shown in FIG. 10, the lens imaging section 40 includes a focusing, zooming, diaphragm mechanism and the like, and a lens system for forming a subject image and the like. An imaging device for photoelectrically converting light incident through the lens system is provided. The imaging signal from the imaging device is sent to the camera processing unit 41.

The camera processing section 41 performs gain control, knee processing, gamma processing, and the like on the image pickup signal to generate a video signal. This video signal is sent to the video compression section 4. Also,
An operation unit 43 for performing various operations on the video camera is connected to the camera processing unit 41.
When the operator operates various buttons, switches, a jog dial, and the like provided on the operation unit 43, the imaging operation by the lens imaging unit 40, the recording start (recording start) of a captured video signal, and the like are started. Start, stop, pause, etc. of playback of video signals and the like recorded on the tape 30;
Various input instructions such as fast forward, fast reverse, login, logout, good shot, no good shot, and keep used for editing are performed.

In the case of the second embodiment, the video signal output from the video decompression unit 14 is sent to the SDI adapter 42. Although the SDI adapter 42 is externally connected, basically, the SDI
C adding unit 15, output amplifier 16, video output terminal 1
7 is comprised.

Further, in the case of the second embodiment, a video signal or the like read by the lens image pickup section 40 and processed by the camera processing section 41 or read out from the magnetic tape 30 by the video expansion section The video signal reproduced at 14,
CP based on metadata once stored in RAM 22
The display signal such as text generated by U21 is also sent to the monitor 44 as needed. As a result, on the monitor 44, the video being captured or the video reproduced from the magnetic tape 30 is displayed, and a list of data based on the metadata temporarily stored in the RAM 22 is displayed.

Here, similarly to the VTR of the first embodiment, the camera-integrated VTR of the second embodiment can record / reproduce, for example, metadata defined by SMPTE298M and 335M together with the video signal. It has been done.

As in the second embodiment, in the case of a camera-integrated VTR, the model name of the camera, processor settings such as gain and knee processing, recording frequency, data bit rate, audio signal format information, Filter selection information, lens system model name and focal length, zoom value,
Information such as an aperture value and various information (time code, such as login, logout, good shot, no good shot, keep, recording start, etc.) used during editing, which are input and instructed by the operator operating the operation unit 43 Data), EOS (End Of Source) data, frame number, and the like are written in the RAM 22 as metadata as described above. These metadata are generated, for example, by the CPU inside the camera processing unit 41 from the set values of the lens imaging system 40, the internal process set values, and operation information obtained by operating the operation unit 43 by the operator. I do.

In the second embodiment, the first
Similarly to the embodiment, information related to the device such as a model name and a serial number, information such as the current date and time generated by the CPU 21, and information input by the operator from the operation unit 43 are also used as the metadata. The information read from the memory tag 37 is also written to the RAM 22 via the CPU 21 as necessary. The format of the data stored on the RAM 22 is, for example, SMPTE298M,
Any metadata, such as the metadata itself defined in 335M, or data obtained by converting or processing them may be used.

The information (metadata) stored in the RAM 22 is arranged on the RAM 22 by the CPU 21 and then sent to the ECC encoder 5, where it is embedded in the Aux sync block as in the first embodiment. And
Like the video and audio signals, they are recorded on the magnetic tape 30 by the recording head 8. As in the case of the first embodiment, the metadata recorded on the magnetic tape 30 and other information are also transferred to the RAM 22 by the CPU 21.
After being organized above, the data is written to the semiconductor memory of the non-contact type memory tag 37 via the coil antenna 24 of the built-in reader / writer 26.

On the other hand, the reproduction of the metadata recorded on the magnetic tape 30 is the same as that of the first embodiment, and the Aux of the signal read from the magnetic tape 30 by the reproducing head 10 is used. The ECC decoder 13 extracts the metadata embedded in the sync block, and the CPU 21 temporarily stores the metadata in the RAM 22. Also, when the metadata recorded in the memory tag 37 is reproduced, the metadata is read from the memory tag 37 and temporarily stored in the RAM 22 via the CPU 21 in the same manner as in the first embodiment. .

Thereafter, when the information (metadata) stored in the RAM 22 is output, for example, superimposed on a video signal, the information is arranged on the RAM 22 by the CPU 21, and then the SDI ANC adding section 1 of the SDI adapter 42 is arranged.
5, the data is superimposed on the video signal as an SDI ANC packet and output.

Next, FIG. 11 shows a third embodiment of the present invention in which a single unit such as a handy type reader / writer 50 described later is used, and The above-mentioned metadata and the like are written / read to / from the non-contact type memory tag 37 of the label 32 attached to the cassette half, and the data is managed by the terminal 60.
3 or another VTR 71, 72 or editing device 74
The terminal 60 further searches for a plurality of cassettes, manages the use of each cassette, and uses video and audio materials recorded in each cassette by using, for example, the metadata stored in the database unit 73. 1 shows an example of the configuration of an editing system that realizes search, attribute determination of video and audio recorded in each cassette, creation of a catalog using each cassette, materials recorded in the cassette, and editing history thereof.
The details of the search using the metadata, the management of the use of the cassette, the determination of the attributes of the video and audio, and the creation of the catalog will be described later. Further, in FIG. 11, FIG.
The same reference numerals are given to the same components of 0, and detailed description thereof will be omitted.

In FIG. 11, the terminal 60 comprises, for example, a personal computer or a work station. The terminal 60 has a database unit 73 having a large-capacity hard disk drive and the like, and a terminal unit similar to that shown in FIG. It is network-connected with VTRs 71 and 72, a camera-integrated VTR 75 as shown in FIG. 10, and an editing device 74 for controlling the operation of a plurality of VTRs to edit video and audio. The network form here includes not only a network form such as a LAN (Local Area Network), but also a wide area network form such as the Internet.

The terminal 60 is loaded into each of the VTRs 71 and 72 using, for example, metadata stored in the database 73 and information such as the memory tag 37 attached to the cassette half of each cassette 31. Management software (application program) for managing each cassette 31 and materials such as video and audio recorded in each cassette 31, editing, and the like as described later is installed.

The reader / writer 50 formed as a single unit is substantially the same as the reader / writer 26 built in the VTR, and includes the coil antenna 24 and the memory tag interface unit 23. 3
7, a RAM 52 for temporarily storing data to be written to the memory tag 7 and data read from the memory tag 37;
The CPU 51 controls writing / reading to / from the RAM 52, organizing data on the RAM 52, generating commands to the memory tag 37, controlling the memory tag interface unit 23, transmitting / receiving data to / from the terminal 60, and the like.

The terminal 6 of the system shown in FIG.
0, for example, when reading the metadata or the like recorded in the semiconductor memory of the memory tag 37, first, the operator performs a predetermined operation (a keyboard or mouse operation to instruct reading) on the terminal 60. Done. As a result, a control signal for reading is transmitted from the terminal 60 to the reader / writer 50 via the cable 61.

The CPU 51 of the reader / writer 50 that has received the control signal for reading sends the read command to the interface unit 23. The interface unit 23 supplies power to the memory tag 37 in cooperation with the coil antenna 24 as described above, modulates a read command and transmits the read command to the memory tag 37, and in response to the read command, The data read and returned from 37 is demodulated and transferred to the CPU 51.
When receiving the data read from the memory tag 37, the CPU 51 transmits the data to the terminal 60.

The terminal 60 that has received the data read from the memory tag 37 sends the data to the database unit 73, the editing device 74, etc., and if necessary, lists the data and displays it on the monitor. I do. In addition, as an example of the display at this time, it is conceivable to display a cue point list for login and logout included in the metadata.

Thereafter, when the cassette 31 is loaded into the VTRs 71 and 72 and edited by, for example, the editing device 74, the editing device 74 reads the metadata (loaded into the VTR) stored in the database 73. The editing using the metadata (video data and audio signals) recorded in the cassette 31 is performed.

That is, in the editing, for example, the editing device 7
When the editor specifies the necessary parts of the video and audio material based on the time code of login and logout of the cue point list displayed on the monitor provided on the operation panel of 4, etc. The device 74 performs digitizing (conversion to data convenient for editing, for example, on a frame basis) for the material of the designated portion, and performs arbitrary editing work using the digitized data. Note that the editing device 74 can also be controlled by the terminal 60.

In the configuration shown in FIG. 11, when the video and audio signals in the cassette 31 are edited, the metadata newly generated by the editing is stored in the database unit 73. Terminal 60
The data is sent to the reader / writer 50 via the RAM 52, is temporarily stored in the RAM 52, is further organized by the CPU 51, and is written into the memory tag 37 of the label 32 via the interface unit 23 and the coil antenna 24.

When the metadata is recorded on the magnetic tape 30, it is recorded on the Aux sync block as described above, but is recorded on the semiconductor memory of the non-contact type memory tag 37 provided on the label 32. If
It can be recorded in the following format.
In the embodiment of the present invention, the metadata
KLV defined by MPTE 298M and 335M (Key
This will be described using metadata of the Length Value) method.

FIG. 12 schematically shows a memory map of the memory tag 37 on the semiconductor memory. Writing / reading to / from this memory is performed in block units (that is, in sector units), and one block (one sector) is 0hth.
It is composed of 16 bytes from a byte to an Fth byte (where h indicates a hexadecimal notation; the same applies hereinafter). Access to the memory tag 37 is performed using the dedicated reader / writer described above. In the memory map, the 0000h block is a memory management table (Memory Management Table) area, and the 0001h block is a manufacture ID table (Manufacture).
ID Table) area, the 0002h block is a format definition table (Format Definition Tabl)
e) region, from the 0003h block to the nnnnh (nn
nn is larger than 0003h, and an arbitrary number of blocks according to the memory capacity) is a common area. The blocks other than the 0000h block and the 0001h block except for the system definition block can be arbitrarily changed by the user. Note that the capacity depends on the version of the memory tag.

Hereinafter, each area of the memory map will be described.

FIG. 13 shows a 0000h block memory management table.
The outline of the area is shown. In FIG. 13, a memory size (Memory_size) is allocated to the 0h and 1h bytes.
The 2h and 3h bytes have a manufacturer code (Manufa) indicating the manufacturer of the memory tag provided on the label.
cture_code), the 4th byte indicates the version (Version) of the memory tag, and the 5th and 6th bytes indicate the lot number at the time of manufacturing at the memory tag manufacturing plant.
(Lot_number) is allocated. The lot number is composed of the date of manufacture and information indicating either morning or afternoon of the date of manufacture. The 7th byte is reserved, the application ID (Application_id) is in the 8th and 9th bytes, and the label shape, that is, the media ID corresponding to the media type to which the label is attached, is in the 10th and 11th bytes.
(Media_id). The application ID dependent field (Ap
replication_id Dependent Field), which is reserved here. Note that 00h is used as a value representing the reserve, for example.

FIG. 14 shows the memory size (Memory_siz) of the 0h and 1h bytes of the 0000h block.
Details of e) are shown below. The memory size is such that the seventh bit (most significant bit) of the 0h byte is reserved,
The memory size is described using the first to sixth bits. 00h is allocated as a reserve in the first h byte.

FIG. 15 shows the lot numbers (Lot_numbe) of the 5th and 6h bytes of the 0000h block.
Details of r) are shown. In the lot number, the manufacturing date is described in order from the MSB (most significant bit) to the lower bits, and the seventh to third bits of the 5th byte of the MSB indicate the manufacturing date (Day) and the 5th to 5th bytes. 2nd byte
The 0th bit and the 7th bit of the 6h byte indicate the month of manufacture (Month), the 6th to 1st bits of the 6h byte indicate the year of manufacture (Year), and the LSB (least significant bit) of the 6h byte Are user-defined bits. As an example, the manufacturing year can be represented by a value that is incremented every year with 1998 as 0, and the user-defined bit can indicate, for example, in which process in the morning or afternoon.

FIG. 16 shows an outline of a manufacture ID table area of the 0001h block. In FIG. 16, the issuing device ID at the factory is allocated to the 0h byte, the BCD values of the 100,000th place and the 10,000th place of the manufacture ID are placed in the 1st byte, and the thousands and 100th places are placed in the 2nd h byte. BCD value is 3h
The 10th and 1st BCD values are allocated to the bytes, the 4th byte is reserved for ID, and the 5th to 15h bytes are reserved for fixed values.

Note that the label (memory tag) ID (Labe
l_ID (used for anti-collision etc.) is the above 0000h
2h and 3h bytes and 5h and 6h bytes of the block,
It is represented by a value in the 0th to 4th bytes of the 0001h block.

Here, in the present embodiment, a label ID (Label ID) is set for each label having the memory tag. The label ID is a unique number (unique number) assigned to the label itself, and the application accesses the memory tag based on the label ID. FIG. 17 shows details of the label ID. In FIG. 17, the label ID is composed of 8 bytes, the 0h byte is the media ID (Media_ID) of the memory management table of the 0000h block, the 1h to 2h bytes are the lot number (Lot_Number) of the memory management table, The 3h to 7h bytes include IDs of 0h to 4h bytes of the manufacture ID table of the 0001h block.

Next, a Hamming 8/4 code (Hamming 8 / code) indicating the memory size, manufacture code, application ID, media ID, etc. of the memory management table of the 0000h block shown in FIG.
4 code) will be described. In the Hamming 8/4 code, of the 8 bits, the first, third, fifth, and seventh bits are used as protection bits (protection bits), and the second, fourth, sixth, and eighth bits are used as data (original signals). Is what you do. One bit error is detected and corrected, and two bit error is detected. Hereinafter, the assignment will be described with reference to FIGS. In FIGS. 18 and 19, the seventh bit (MSB) P1 of the eight bits is the sixth bit D
1 and the second bit D3 and the 0th bit (LSB) D4 and "
The value is obtained by taking the exclusive OR of "1" and the fifth bit P
2 is the sixth bit D1, fourth bit D2, and zeroth bit D
4 and a value obtained by performing an exclusive OR operation of “1”, and the third bit P3 is a value obtained by performing an exclusive OR operation of the sixth bit D1, the fourth bit D2, the second bit D3, and “1”. And made
The first bit P4 includes a seventh bit P1, a sixth bit D1, a fifth bit P2, a fourth bit D2, a third bit P3, a second bit D3, a first bit P4, and a zeroth bit D4.
The conversion of the Hamming 8/4 code is checked by, for example, checking the correspondence between the hexadecimal value and the Hamming 8/4 code (binary number) shown in FIG. The data of the Hamming 8/4 code is viewed from the outside of the controller, for example, as shown in Fig. 21. Fig. 21 shows an example in which the memory size is represented.

Returning to the explanation, the 0002h shown in FIG.
Block format definition table (Fo
FIG. 22 shows an outline of the “rmat Definition Table” region.
In this area, each application is recognized, and is used to check whether the format shown in FIG. 22 is valid. All data are character strings. In FIG. 22, the 0th byte is a keyword (Keyword) and a key code for rewriting the 0002h block (sector) is arranged, and the first code byte is a fixed code (FFh, FEh). 2h to 12th
In the byte, the application name (Application Name) and its version (Version), in the 13th byte, a code for write protection, in the 14th byte, a country code,
A number code is allocated to the 5h byte.
When the write protect code is "0", it is write enable (Write Enable: write enable), and when it is "1", it is write disable (WriteDisable: write disable). For country codes,
The country code is represented by the BCD. For example, in Japan, the Eh byte of the country code is 00h, the Fh byte is 81h, and in the United States, the Eh byte is 00h,
The Fh byte is 01h.

Next, the outline of the common area (Common Area) after the 0003h block shown in FIG. 12 will be described. In the common area, the area from the 0003h block to the 000Ah block is a common area management table (Common Area Management Table) area, and the 000Bh block and subsequent blocks are the data area (Dat area).
aArea). The common area management table area stores basic information of a medium managed by the memory tag of the present embodiment (an example in which a cassette tape is used as a recording medium in the present embodiment).

FIG. 23 shows details of this common area.

In FIG. 23, a character string (eg, a Cascade ID) as an ID attached to a label (memory tag) is allocated to 20 bytes from the 0th byte of the 0003h block to the 3h byte of the 0004h block. From the 4th byte of the 0004h block to the 0005th block.
In the 20 bytes up to the 7th byte of the h byte, a character string as a database key (Data Base Key) which is a unique ID assigned for database search is stored in the 000th byte.
A character string of a title is arranged in 24 bytes from the 8th byte of the 5h block to the Fh byte of the 0006h block.

The 16th byte from the 0th byte to the Fhth byte of the 0007h block has an administrator (Adminis
trator) is the 0h of the 0008h block.
For example, a binary value (for example, the maximum value is 0000099999999) representing the serial number (Serial No.) of the last used device is stored in the four bytes from the byte to the third h byte.
1 from the 4th byte to the Fh byte of the 08h block
In the two bytes, for example, a character string representing the model name (Model Name) of the device used last is arranged.

In the two bytes of the 0h and 1h bytes of the 0009h block, the total size of the cue point data from the head address of the cue point data corresponding to the clip area from the start to the end of the recording (ie, 000Bh A binary value representing a pointer (Pointer) corresponding to the number of valid bytes of the data area after the block is indicated by EOS in two bytes of the second and third h bytes.
At the (End Of Source) point, it is recorded in the video area on the tape.
The binary value (EOSR-ID) representing the D (random number) number is 4h
In the byte, the status of the reel on the supply side of the cassette at the last recording point is a remaining status (RS: Remain Status).
In the 5th byte, a binary value representing Remain Time (RT), which is a value corresponding to the winding diameter of the reel on the supply side of the cassette at the last recording point, is stored in the 6th byte to the 9th byte. In the 4 bytes up to the byte, the time code indicating the position of the last recording point (EOS Point) is
The two bytes of the Ah and Bh bytes have a thread count value (Thread count) indicating the number of times the tape cassette has been loaded (the number of times the tape cassette has been used).
Count), the four bytes from the Ch-th byte to the F-th byte include B indicating the recording date and time (Update) of the last recording.
A CD is provided.

The two bytes of the 0h and 1h bytes of the 000Ah block contain 1 byte from the start to the end of recording.
As the clip area offset (clip area offset), the head address (Data
A binary value representing TOPP (Data Top Pointer) is provided. This value is the offset byte number with 00B0h as the 0th byte. For example, in the case of 00E0h,
30h is set. Two bytes of the 2h and 3h bytes of the 000Ah block are used for file address management of the cue point list (for example, the total number of cue point packages stored in the data area and the number of cue points per package are predetermined). A binary value representing a definition (FAT Definition) of a file allocation table (FAT) to be stored, and a binary value (for example, 00h) representing a reserved area for expansion (Reserve) in six bytes from the 5th byte to the Ath byte, The Bh byte contains the field frequency (FQ: Recoding Frequency) of the video signal recorded on the tape.
cy) and a data bit rate, and a binary value indicating an audio status (AD Status) recorded on the tape is disposed in the Chth to Fth bytes. Note that the 2h byte of the 000Ah block indicates FAT thinning, 0h indicates no FAT, 1h indicates 1 clip, 2h indicates 4 clips, and 3h indicates 16 thinning. For example, in the case of thinning out four clips, the Eh byte and the 003Fh of the 003Fh block are used.
The Fh byte of the block is the address of clip 0, and the Ch byte and Dh byte of the 003Fh block are the address of clip 4. In addition, the 000A
The field frequency described in the Bh byte of the h block indicates the video scan format (video_f), the most significant bit of the Bh byte indicates whether the scan is a progressive scan or an interlace scan, and the value of the lower 3 bits is 29.97 frames / sec when “000”, 20 frames / sec when “001”, “100”
23.98 frames / sec. For "101", 24 for "101"
It is possible to represent frames per second. This figure 2
In the third common area, up to the 000Ah block is a common area, and the 000Bh block and thereafter are data areas in which information for each clip is arranged.

FIG. 24 shows an example of the serial number represented by four bytes of the 0h to 3h bytes of the 0008h block of FIG. 23, and FIG.
The pointer (Pointer) represented by two bytes of the 0h and 1h bytes of the 09h block, and the 2h and 3h
An example of an ID number (EOSR-ID) used for searching for the EOS point expressed in bytes is shown. The above EOS
In the ID number (EOSR-ID), the same value as the random number recorded on the tape at the time of final recording is recorded. Used to find the last recorded point. The reason why the random numbers are used in this way is that, since the same value may exist in the time code at the last recording point, if the time code becomes the same value, it is possible to distinguish them. .

FIG. 26 shows 0009h of FIG.
The content of the above-mentioned Remain Status (RS: Remain Status) described in the 4h byte of the block is shown. In FIG. 26, the uppermost seventh bit is “1” when the reel diameter of the cassette has not been measured, the sixth bit indicates the tape top or end, and “0” in the tape top state.
It becomes "1" in the tape end state. The fifth bit is unused, and the fourth bit is "1" when the tape is in the top or end state. The third and second bits indicate the cassette size, which is "00" when the size is small (S), "01" when the size is medium (M), and "10" when the size is large (L). The first and zeroth bits are unused. The sixth bit and the fourth bit are as shown in FIG. 27 depending on the state of the tape. That is, the sixth bit is "0" and the fourth bit is "1" at the tape top, the sixth bit is "0" at the middle of the tape, the fourth bit is "0", and the sixth bit is at the end of the tape. Is "1" and the fourth bit is "1"
Becomes

FIG. 28 shows the contents of the time code (Time Data) representing the position (EOS Point) of the last recording point described in the 6th to 9th bytes of the 0009h block in FIG. In FIG. 28, the position of the last recording point (EOS
Point) is represented as a 4-byte BCD code. Of the four bytes, the first byte (DATA-1) contains data representing a frame, the second byte (DATA-2) contains data representing seconds, and the third byte (DATA-).
Data representing minutes is stored in 3), and data representing hours is stored in the fourth byte (DATA-4). In addition, the type is represented using an empty bit. When invalidating data, all data is filled with FFh.

FIG. 29 shows a thread count value (Thread Cou) indicating the number of cassette insertions represented by two bytes of the Ah and Bh bytes of the 0009h block in FIG.
nt). The thread count value is 7F
It is also possible not to count up when it exceeds FFh.

FIG. 30 shows an example of setting from the 0009h block to the 000Bh block in FIG.
1 includes the 0th and 1st blocks of the 000Ah block in FIG.
An example of the head address (Data TOPP) of the h-byte cue point data area is shown.

FIG. 32 shows the 000Ah of FIG.
Definition of the file allocation table represented by 3 bytes from the 2nd to 4th bytes of the block (FAT Defi
nition). According to this, file addresses of a list of cue points for easily searching for cue points can be managed. When performing address management, the head address (2 bytes) at which the cue point is stored from the end of the data area to the front is written. that time,
Specify how many cue points to store addresses in and specify the total number of stored cue point packages. In FIG. 32, the 7th to 2nd bits of the 2h byte (offset address 0) of the 000Ah block are reserved, and the 1st and 0th bits are the count value (Packed FAT Count) of the cue point package. You. Also, the third h byte (offset address 1)
Are the upper 8 bits of the 16 bits representing the total number of stored cue point packages, and the 8 bits of the fourth h byte (offset address 2) are 16 representing the total number of stored cue point packages. The lower 8 bits of the bits are used. Note that when the first and second bits of the cue point package count value (Packed FAT Count) are “00”, it indicates that they are not used, and when “01”, the address is stored for each queue. , “10” indicates that addresses are stored in every four queues, and “11” indicates that addresses are stored in every 16 queues.

FIG. 33 shows the field frequency (FQ: Recoding) of the Bh byte of the 000 Ah block in FIG.
Frequncy). In FIG. 33, the 7th most significant bit is set to “0” in the interlace mode, and is set to “1” in the progressive mode. The sixth to third bits are reserved, the fifth to third bits are video recording bit rate (ie, data bit rate) information, and the second to least significant zero bit are video recording frequency (ie, field frequency) information. Is arranged. When the fifth to third bits are “000”, the data bit rate is 20 Mbps (megabits / bit).
Second), "001" is 30 Mbps, "010" is 40 bps, "011" is 50 bps, "
100 "is a bit rate of a predetermined video system,"
101 "represents a reserve. When three of the second to 0th bits are" 000 ", the field frequency is 2
9.97 Hz, 30 Hz when "001", "010"
At the time of “011”, 25 Hz, “10”
23.98 Hz for "0", 24 Hz for "101"
Represents

FIG. 34 shows the contents of the audio status (AD Status) in the Chth to Fh bytes of the 000Ah block in FIG. In FIG. 34, the audio status of channel CH2 is allocated to the 7th to 4th bits of the Chth byte (offset address 0) of the 000Ah block, and the audio status of channel CH1 is allocated to the 3rd to 0th bits. Is done. The seventh to fourth bits of the Dh byte (offset address 1) of the 000Ah block are channel CH4.
The audio status of channel CH3 is allocated to the third to 0th bits. Similarly, the audio status of the channel CH6 is allocated to the seventh to fourth bits of the Eh byte (offset address 2) of the 000Ah block, and the third to zeroth bits are allocated.
Up to the bit, the audio status of the channel CH5 is allocated. The audio status of the channel CH8 is allocated to the seventh to fourth bits of the Fh byte (offset address 3) of the 000Ah block.
The audio status of channel CH7 is allocated to the 0th bit. These channels CH1 to CH8
The 4-bit audio status is, for example, “01”
00 indicates that the data is in a predetermined format (for example, ATRAC3: trademark), "0011" indicates that the data is in a predetermined format (for example, Pana Data: trademark), and "0010" indicates that the data is in a predetermined format. When the data is "0001", the data is in a predetermined format (for example, DOLBY-E: trademark). When the data is "0000", the data is in a PCM (Pulse Code Modul).
ation) data.

Next, in the common area shown in FIG. 23, the value of the head address (Data TOPP) of the cue point data area defined in the 0th and 1h bytes of the 000Ah block in FIG. By setting, the common area can be extended and additional data can be defined. However, due to the limitation of memory capacity,
Writing data to the extension area is not essential.

The common area shown in FIG. 23 can be extended. FIG. 35 shows an extended common area management table (Extended Area Mana).
gement Table). In FIG. 35, the blocks from the 0003h block to the 000Ah block are shown in FIG.
3, the illustration of that part is omitted.

In FIG. 35, the 8 bytes from the 0th to 7h bytes of the 000Bh block have a data format ID (Extended Area Format) of an extended data area.
A character string representing the data format of the extended data area (Format Version) is disposed in the three bytes from the 8th byte to the Ah byte. A character string representing the reel name (Reel Name; only one can be defined) of the label is allocated to 6 bytes from the 0h to 5h bytes of the 000Ch block, and 6 bytes from the 6h to Bh bytes. Is the EDL (EDiting
EDL File Name (EDL File Nam) in which List is defined
e. A character string that represents only one can be defined. In addition, a character string representing, for example, a storage floor number (Stocked Floor No.) of the cassette to which the label is attached is allocated to three bytes from the 0h to 2h bytes of the 000Dh block. In the 6 bytes, for example, the storage shelf number (Stocked Shel
f No.) is the 3rd from the 9th to Bh bytes.
In the byte, a character string indicating the stocked step number of the cassette, for example, to which the label is attached is Ch. Ch.
In the four bytes from the Fth byte to the Fth byte, a character string indicating the stocked position of the cassette to which the label is attached is arranged. Also, a total of 36 bytes of the 000Eh and 000Fh blocks are reserved,
A total of 40 bytes from the 0th byte of the 010h block to the 7th byte of the 0012h block are provided with a character string representing a comment or a memo attached to the label.

Next, data stored in the data area (Data Area) of the above-mentioned common area and extended common area will be described. The data area stores data suitable for each application. In the case of the present embodiment, the metadata and the like are stored in the data area, and the metadata is mainly added to each clip from the start to the end of recording. It should be noted that the above-mentioned common area also has information that is a source of metadata, and there is a case where metadata is generated using the information of this common area. The metadata to be read and written will be described.

FIG. 36 shows a data format of a cue point representing one clip area from the recording start to the recording end. Incidentally, in this data format, each item and the whole are of variable length.

In the data format of the cue point, as shown in FIG. 36, each bit of the status (Status) flag corresponds to “present” / “not present” of each data format, and the data designated by the status is used. Only the lower bit after the status is connected. In FIG. 36, the data format of the cue point is a 2-byte cue point (Status) flag, a 4-byte cue point (f), second (s), minute (m), and hour (h). CUE Point), 4 bytes of In point (IN Point) representing frame, second, minute, hour, and 4 also representing frame, second, minute, hour
OUT point for bytes, scene number for 3 bytes representing the number (Scene No.), cut number for 4 bytes representing the number (Cut No.), 1
4 bytes of take number (TakeNo.), 4 bytes of reserved user bits (User_bit), 4 bytes of real time (Real_Tim) representing frames, seconds, minutes and hours
e) 4 bytes of real data (Real_Data), UMID (Unique Material IDentifier) data of up to 53 bytes, additional information of arbitrary bytes (Additional Information)
Consists of The UMID is a globally unique ID assigned to video and audio materials, and is defined, for example, in SMPTE330M. Details of the UMID used in the present embodiment will be described later.

Here, of the 16 bits constituting the two bytes of the status shown in FIG. 36, when the fifteenth bit is "1", recording is started, and when it is "0", normal recording is performed. When the bit is "00", it is default, when it is "01" it is OK (shot 1), when it is "10" it is NG (shot 2), and when it is "11" it is keep (KEEP)
When the twelfth bit is “1”, additional information (Additi
onal Information), “0” indicates no additional information, 11th bit is “1”, write disable (Write desable), and “0”, write enable (W
rite enable) and the 10th to 9th bits are “00”
When there is no UMID data, when "01", only 6-byte material data (Material Data), when "10", 21-byte basic data (Basic Data), "
When 11 ", extended data of 53 bytes (Extended Dat
a) indicates that data is arranged, and when the eighth bit is “1”, data exists, and when the eighth bit is “0”, no data exists. When the seventh bit of the status is "1", there is real time (Real Time). When it is "0", there is no real time. The sixth bit is reserved, and the fifth bit is "real time".
When "1", there is a take number (Take No.), when it is "0", there is no take number. When the third bit is “1”, a scene number (Scene No.) is present. When the third bit is “0”, no scene number is present. When the second bit is “1”, an out point (OUT Point) is present. 0 indicates no out point, 1st bit indicates “1”, IN point exists, “0” indicates no inpoint, and 0 bit indicates “1”, cut point (IN). CUT
Point), and “0” indicates no cut point.

The cue point (CUE) shown in FIG.
Point) and In point (IN Point), Out point (OUT Point) and Real time (Real Time) are time information indicating frames, seconds, minutes, and time, respectively, and the above scene number (Scene No.) and cut number (CUT N
o.) are ASCII characters. Also, the take number (Take No.) and reserved (Reserved) are 0.
Is a binary value of ~ 255, and the data is
Time information representing the month and year as binary values. As the data, the data in the above format is stored in accordance with the capacity of the semiconductor memory of the memory tag, and the end of the data is represented by two bytes of the status being set to 00h.

Here, as a specific example of the format shown in FIG. 36, FIG.
h, 00h, that is, the data structure when the 0th bit is “1” and all other bits are “0” (ie, only the cue point data). In the case of FIG. 37, it is represented by only 6 bytes in total. FIG.
As a specific example of the format of FIG. 38, in FIG. 38, two bytes of the status are 07h and 00h, that is, the 0th, 1st,
Each of the second bits is “1” and all other bits are “
0 ”(ie cut point, in point,
Out point data data only). In the case of FIG. 38, it is represented by only 14 bytes in total.

Next, FIG. 39 shows the additional information (Additional Information) when the twelfth bit of the status shown in FIG. 36 is “1” (with additional information).
on), and FIG. 40 shows a more detailed structure of FIG.

In these FIGS. 39 and 40, additional information includes classification, flow / mode type / data size (DataSize: upper 4 bits), lower 8 bits of data size, Classification (Classification), which is composed of payload data (Data)
Is represented by one ASCII character, and the flow, mode type,
The data size is represented by a binary value. The above flow is "
When "1", it indicates that this subset is followed by another subset. The mode type indicates a data type, for example, binary when the fifth bit is "0" and the fourth bit is "0", and the fifth bit. When the bit is “0” and the fourth bit is “1”, it indicates shift JIS, and when the fifth bit is “1” and the fourth bit is “0”, it indicates Unicode.

ASCII of the above Classification
When one character is, for example, 'C', comment (Commen
t), EDL (EDiting List) for 'E', SMPTE metadata version 1 for 'M', whole UMID for 'U', UMID signature metadata for 'S', '$' Represents a user definition. The classification name is described in ASCII characters in the classification field. In addition, it is ASCII one character at present,
The classification can be extended by setting a delimiter (Delimiter) described later to “1”. In the case where the classification is extended, for example, when the comment is “CMT”, a comment
In the case of ID ', it indicates a camera ID.

The 7th bit (MSB) of the flow / mode field is the limiter (Delimi) of the classification field.
ter) to indicate the end of the classification field. In the sixth bit of the flow / mode field, flow control (Flow Control) information is arranged, and in the fifth and fourth bits, mode control (Mode Control) information is arranged. The flow control information is used to define a plurality of pieces of additional information. For example, the flow control information of the sixth bit is "
0 indicates the end of the additional information, and 1 indicates that there is additional information after.
Define the character code type of the data area. For example,
When the fifth and fourth bits are "00", it indicates that the data is represented by a binary code, when "01", the data is represented by a shift JIS code, and when "10", the data is data. The inside is Unicode, and “11” indicates that it cannot be used.

Data size (number of bytes in data area)
Is defined by the 3rd to 0th bits (upper 4 bits) of the flow / mode field and 1 byte (lower 8 bits) of the next data size field.
It has a bit configuration. Therefore, the number of data that can be transmitted at one time is 4096 bytes. Flow control information is "
When "1", it indicates that this subset is followed by another subset. The data length is 0 to 8191, and 0 represents the case of only classification.

The above is the description of the memory map and format of the semiconductor memory of the non-contact memory tag 37 provided on the label 32.

Next, the UMI described in FIG.
D will be described.

FIG. 41 shows a data format of an extended UMID (Extended UMID) specified in SMPTE 330M. In FIG. 41, the SMPTE 33
The extended UMID specified in 0M is composed of a 32-byte basic UMID and a 32-byte signature metadata (Sifnature Metadata), for a total of 64 bytes. The basic UMID is a 12-byte Universal Label, a 1-byte length (L), and a 3-byte instance number (InstA).
NCe No.), 16-byte material number (M
and the signature metadata is 8-byte time data (Time / Data), 12 bytes.
Spatial coodin
ate), a 4-byte country code, a 4-byte organization, and a 4-byte user code. In addition, the material number (Material Number) is an 8-byte time snap (Time Snap), a 2-byte random number (Rnd), and 5 bytes.
It consists of a machine node (Machin Node).

On the other hand, in the present embodiment, the UMID is configured as follows. In the following description, FIG.
The camera processing unit 41 of the camera-integrated VTR shown in FIG.
Alternatively, the UMID generated by the CPU 21 will be described as an example.

The camera-integrated VTR of this embodiment first assembles a basic UMID as follows.

Since the first to tenth bytes of the 12-byte universal label of the basic UMID are fixed byte strings,
At this point, the description is omitted, and the VTR according to the present embodiment adds the first to tenth fixed byte strings when recording on the magnetic tape 30 or outputting to the outside. The eleventh and twelfth bytes of the universal label are, for example, 04h and 11h when the image and the audio are recorded simultaneously and are the original material. In addition, since the length (L) is also known, the description is omitted at this time. In the case of the original material, the instance number is 00h,
00h, 00h.

Next, as shown in FIG. 42, the time snap of the material number is determined by the frame (F).
Each of these values is generated from, for example, clock information generated by a time code generator inside the VTR. The eight bytes represent seconds, seconds, minutes, and hours. For example, if the date is May 31, 2000, the date is converted to Julius day, which is 2000.05.31, and the time zone is set to 97h when the time zone is known to be, for example, Japan from the clock setting. Align 8 bytes. The random number (Rnd) is
It consists of a lower byte (lower) and an upper byte (upper),
The values for them are obtained, for example, by an M-sequence generator running free by software.

Furthermore, a machine node (Machine Node)
Is obtained from a serial number written in an EEPROM (not shown) usually provided around the CPU of the VTR.

As described above, a basic UMID consisting of 21 bytes is assembled as shown in FIG. In the case of the above camera-integrated VTR, the basic UMID
Are generated at the start of recording and written to the RAM 22.

Thereafter, in the case of the above-mentioned camera-integrated VTR,
As shown in FIG. 44, the basic UMID of 21 bytes includes time data (Time / Data) of 8 bytes, 12
Spatial coodin
ate), 4-byte Country Code, 4-byte Organization, 4-byte User Code (User Code) together with 32-byte signature metadata (total is up to 53 bytes) ), To be recorded on the magnetic tape 30. At this time, a time code is also written on the magnetic tape 30 at the same time.

After the data corresponding to some clips is recorded as described above, the magnetic tape 30 is ejected.
The UMID stored in the memory tag 22 is written to the semiconductor memory of the memory tag 37. However, when writing to the semiconductor memory of the memory tag 37, the UMID is used to reduce the capacity consumption of the semiconductor memory.
Is compressed and recorded as follows. That is, UM
Since the ID is a unique value for each clip, it is about several tens of kilobytes per cassette tape. For example, when the capacity of the semiconductor memory of the memory tag 37 is small, all of them are stored. Is not preferred. Also, for example, in the case of transmitting UMID to a transmission path with a small transmission capacity or in the case of analog equipment,
It is desirable to reduce the amount of information required for those UMIDs. Therefore, in the present embodiment, the UMID can be compressed as follows.

Here, the package of each clip is configured as shown in FIG. 36. In the case of the camera-integrated VTR of this embodiment, for example, the time code at the start of recording is set as a cue (Cue). , The basic UMID.

For example, the first clip has a flag of 2 bytes, a cue of 4 bytes, and a UMID of 21 bytes, for a total of 2 bytes.
7 bytes. Specifically, for example, in hexadecimal notation,
The result is as shown in FIG. In the next clip, since it is considered that the date and the like do not change, a difference format can be used for the UMID, and the UMID only needs to be 6 bytes as shown in FIG. That is, in FIG. 45B, only the 6 bytes of the time snap frame, seconds, minutes, and hours and 2 bytes of the random number in FIG. can do.

As described above, after the image of the memory map of the semiconductor memory of the memory tag 37 is constructed in the RAM 22, the image is actually written into the semiconductor memory of the non-contact type memory tag 37 by the coil antenna 24.

Next, metadata other than the UMID will be described.

Here, the non-contact type memory tag 3
It is assumed that a main title (an example is "The Tele-File") is written in a common area of the semiconductor memory 7 and a subtitle (an example is "Application") is written in the next package. Also, the VT of the present embodiment
It is assumed that the metadata recorded by the R on the magnetic tape 30 and output to the outside as an SDI ANC packet is the number of frames per second in addition to these titles.

First, description will be made from the point of creating metadata in the VTR of the present embodiment.

The main title is read from the semiconductor memory of the memory tag 37. As shown in FIG. 46, a declaration that the main title is metadata (8 bytes)
, The main title code (8 bytes), the length (1 byte), and the ASCII characters representing the characters of the main title (in this example, ASCII characters 13 representing The Tele-File)
Byte). Also, in FIG. 46, 8 of the declaration of the first metadata
Since the bytes are always the same, they are omitted, and as shown in FIG. 47, the information such as the status flag and the desired IN / OUT points and headers shown in FIG. Add to generate a clip package. At this time, the subtitle is also read from the semiconductor memory, and is output to a tape or an external device when the clip is recorded.

Next, for example, regarding the number of frames,
Obtained from the set value of For example, 1 for 30 frames / second
It is 1Eh in hexadecimal. These three types of metadata are actually byte strings as shown in each row shown in FIG. 48 when the metadata declaration is omitted.

When outputting these to the outside or tape,
06h 0Eh 2Bh 34h01h 01h 01 at the beginning
When h01h is added and the data is written to the semiconductor memory of the memory tag 37, cue point information and a header are added to the head. Note that it is up to the user to attach which metadata to which clip, and it is also possible to attach a plurality of metadata to one clip. Adding multiple pieces of metadata to one clip in this way requires additional information (Ad
6th bit (Flow) of the header of ditional information)
It is possible by setting.

Here, as an example, the leading 0 of the tape is
If the number of frames from 0: 58: 30: 00 to the color bar, the theme after the first clip of 01: 00: 00: 00, and the subtitle are written in the next package, the specific byte sequence is As shown in FIG.

The last line in FIG. 49 is an example that does not include metadata. The line above it is a subtitle,
This is a rewrite of the originally written metadata. Further, the line above it is the subject, which processes the information quoted from the common area of the semiconductor memory of the memory tag 37 into metadata, that is, the memory tag 37.
Is copied on the semiconductor memory. Of course, as shown in the first row of FIG. 49, the metadata may be created based on an information source other than the memory tag 37.

When the metadata read from the semiconductor memory of the memory tag 37 is output to, for example, the outside, the UMI read from the memory tag 37 is output.
From D, the regular UMID specified in SMPTE must be restored. In the present embodiment, the memory tag 37
When restoring the normal UMID from the UMID read out from, the values in the table shown in FIG. 50 are substituted. In the blanks of the table shown in FIG. 50, the values read from the memory tag 37, that is, the eleventh and twelfth bytes of the universal label, the time snap frame, seconds, minutes,
At this time, a normal UMID is restored by inserting a random number or the like. A prefix is inserted in the p column in the Least mode of FIG. 50, and the signature metadata follows the instruction when the second bit of the UMID flag is "1" last. However, if the additional information has a predetermined value (for example, 's'), only the clip is added.

The UMID shown in FIG. 48A is, for example, an EAV (End of Active Video) immediately before the tenth line of the SDI Y channel of high definition video.
deo) and thereafter, as shown in FIG. FIG.
The metadata indicating the title of the SDI Y channel of the SDI Y channel of the high-definition video is
After V (Start of Active Video), it is placed as shown in FIG. In FIGS. 51 and 52, the 10-bit data string is represented by three hexadecimal digits, and the lower two digits, eight bits, have the same contents as the seventh to zeroth bits of the original metadata, and the ninth bit. Are their even parity, and the ninth bit is the inverted version of the eighth bit. 51 and FIG.
2 is a line feed and an annotation for the sake of explanation, but is actually a continuous stream. When the actual serial data becomes 1.485 G (giga) bps, chroma data is alternately arranged in word units. Is done. That is,
In the case of the above UMID example, 3FF 3FF 000 000 000 000
2D8 2D8 200 000 200 3FF 2003FF 200 2FD 200 101 200
It is made like 120 ...

As described above, according to the present embodiment, the label 3 provided with the memory tag 37 capable of writing / reading the metadata including the UMID as described above.
2 is attached to the cassette half of the cassette 31, so that the VTR or the cassette integrated VT
Using the reader / writer 26 built in R, the metadata can be easily accessed, and the metadata can be read and written. In addition, by using the reader / writer 50 connected to the terminal 60, the metadata can be easily accessed without particularly reproducing the magnetic tape, and the metadata can be read and written. Further, for example, as in the above example, an operation such as writing a title before recording can be performed, and an operation of reading or adding metadata of a recorded tape can also be performed. Also, the UMID generated using information obtained from the built-in operation panel and sensors and the attached devices and equipment is stored in the memory tag 37.
It is also possible to write to. As described above, according to the present embodiment, by using the memory tag, the handling range of the metadata on the removable recording medium such as the cassette 31 is greatly increased.

As shown in the example of FIG.
By using the reader / writer 50 and enabling the reading of the memory tag 37, the metadata can be read without reproducing the recording medium such as the magnetic tape 30 of the cassette 31, for example. And help with confirmation. Since the metadata at this time is based on standardized metadata such as SMPTE, it is possible to link with other systems. Further, if the input video signal includes metadata as in the example of FIG. 1, it can be extracted and written to the memory tag 37 without, for example, key operation or connection. According to the present embodiment, even if the input signal does not include metadata, the metadata can be written to the memory tag 37 by key operation or automatic generation.

According to the present embodiment, SMPTE
The UMID defined in 330M is obtained by omitting the fixed part,
The size can be efficiently compressed by classifying the status flag bits and omitting common parts. That is, since the data size for each item can be reduced, the number of items that can be accommodated in the semiconductor memory of the memory tag 37 increases, and the time required for access can be shortened because the total amount of data decreases. Also, the compressed UM
It is also possible to restore the ID to a regular UMID. Furthermore, since the UMID is obtained for each cut, it can be used even after editing, and the standardized UMID
According to D, it is possible to cooperate with other systems.

In the present embodiment, when the metadata is generated, the metadata is written into the memory tag 37, and the recording essence (material) is generated through any operation. For each editing work, the history information of whether it exists at the present time is recorded on the spot, and since it has a data format for accumulating them, for example, when creating an inventory of a recording medium such as a cassette tape, The metadata stored in the memory tag 37 can be used as original data for creating a list. Therefore, according to the present embodiment, for example, metadata generated by recording or the like is recorded in the memory tag 37, and in the subsequent work such as editing, for example,
The metadata can be exchanged on a different route from the video and audio signals, and the reliability of the data can be dramatically improved.The metadata can be used to improve the efficiency of the system. Has become. In addition, the burden of catalog creation work is reduced, the work is practically standardized, secondary use of video materials and the like is advanced, and it is useful for efficient use of resources.

Further, in this embodiment, as described above, the metadata previously written in the memory tag 37 is recorded in the cassette 31 at the time of recording, and the metadata is written back to the memory tag 37. That is, the metadata generated using the information read from the memory tag 37 is recorded in the cassette 31 at the time of recording, and the metadata newly generated using the information read from the memory tag 37 is stored in the memory tag 37. And the metadata can be output from an external communication terminal. In other words, according to the present embodiment, by preliminarily recording metadata and information that is a source of the metadata in the memory tag 37, the time and labor required for input work at the time of recording can be reduced. It can be reduced. Also,
According to the present embodiment, information is made consistent by writing back the determined metadata, including the metadata generated at the time of recording, to the memory tag 37. Further, according to the present embodiment, the determined metadata is output at the same time as the recording, and is transmitted, for example, via a line.
For example, by creating a database, the database can be organized without waiting for the arrival of media. Further, even when a line cannot be secured, the same information is obtained by the memory tag 37, and the degree of freedom of work is increased.

In this embodiment, time code data such as recording start, good shot, no good shot, login, logout and the like are recorded in the memory tag 37. The editing system shown in FIG. By reading the data recorded in the memory tag 37, it is possible to digitize only the video and audio signal materials necessary for editing. Further, in the present embodiment, metadata including data newly generated at the same time as editing (editing date, editor, reel number, EDL number, etc.) and data before editing are recorded in the memory tag 37 on the editing system. It is possible to do. That is, according to the present embodiment, the metadata generated by recording or the like is recorded in the memory tag 37, and the data can be transferred to the subsequent editing system through a different path from the video and audio signals. Has greatly improved the reliability and convenience, and it is possible to utilize the metadata to contribute to the efficiency of the editing system. In addition, by reducing the load of the logging work, the work is effectively standardized, which contributes to effective use of resources. In addition, metadata is recorded on the spot as it occurs,
In addition, since the data is stored in the memory tag 37 integrated with the recording medium, the efficiency of operations such as creating a catalog required for storing the medium can be improved.

As described above, according to the present embodiment, the above-described metadata is recorded in the memory tag 37 and can be reproduced, so that the following operation can be performed.

As one example of the operation using the metadata on the memory tag 37, in the present embodiment, the information related to the recording point described above is written to and read from the contactless memory tag 37 by the reader / writer. By making it possible, it becomes possible to manage the cassette 31 without reproducing the signal recorded on the magnetic tape 30. For example, it is possible to easily search for the final recording point, and from the recording confirmation to the next It is possible to shorten the time required for recording and improve the operability, for example, to construct a system for preventing erroneous erasure that prevents overwriting of a location once recorded.

That is, for example, in the case of the VTR shown in FIG. 1 of the first embodiment, when the cassette 31 is inserted into the VTR, the reader / writer 26 built in the VTR becomes The attached non-contact type memory tag 37 is recognized, and reading of data (metadata) from the memory tag 37 is started. At this time, the 0009h block of the read metadata is ID (random number) number (EOSR-ID) used for searching for the EOS point (final recording point) described in the 2h and 3h bytes, and the reel on the supply side of the cassette at the final recording point described in the 4h Status, and a main time (RT) which is a value corresponding to the winding diameter of the reel on the supply side of the cassette at the last recording point described in the 5th byte. Check information position (EOS Point) of the last recorded point described in the first 6h byte until the 9h bytes. Thereby, the management of the cassette 31,
Cueing to the last recording point and prevention of erroneous erasure can be performed.
That is, for example, in a case where overwriting of a once recorded portion is to be prevented, it is essential to specify the last recording point. In the present embodiment, the last recording information recorded on the memory label 37 and the By collating the written final record information and specifying the final record position, erroneous erasure can be prevented.

In FIG. 53, the last record information recorded on the memory label 37 and the last record information recorded on the magnetic tape 30 are collated to specify the last record position and execute recording. The flow of the case is shown.

In FIG. 53, first, for example, when the cassette 31 is inserted into the VTR shown in FIG. 1 and a recording start instruction (issuance of a recording command to a tape) is issued, the CPU 21 of the VTR first It is determined whether or not the cassette 31 is in the overwrite-protection mode. When the cassette 31 is not in the overwrite-protection mode, that is, for example, an unrecorded tape or a tape in a state in which all the already recorded signals may be overwritten. In the case of, step S43
To start recording.

On the other hand, if the mode is the overwrite prohibition mode, the flow advances to step S32. Proceeding to step S32,
The CPU 21 turns on the recording status, and then determines whether the EOS data in the metadata read from the memory tag 37 by the reader / writer 26 is valid. If it is determined in step S33 that the EOS data is not valid, the process proceeds to step S39, and if it is determined that the EOS data is valid, the process proceeds to step S34.

When the process proceeds to step S34, the CPU 21
It is determined whether or not there is EOS position information. If there is no EOS position information, the process proceeds to step S36. In step S36, the user is notified by, for example, turning on an alarm or displaying on the monitor 29, and then the process proceeds to step S37. on the other hand,
If it is determined in step S34 that there is EOS position information, the process proceeds to step S35.

In step S35, it is determined whether the EOS point is within a predetermined search range. That is, when the reel winding diameter is converted into a search time, it is determined whether or not the EOS point is within a searchable range within 30 seconds.
If the EOS point is not within the predetermined search range in step S35, the process informs the user in step S36 and then proceeds to step S37. On the other hand, if it is within the search range, the process proceeds to step S37.

At step S34, it is determined that there is EOS position information, and at step S35, it is determined that the EOS point is within a predetermined search range.
When the process proceeds to the process (1), the CPU 21 causes the EOS search to be performed so that recording is started within 5 seconds according to the distance to the EOS point.

On the other hand, if it is determined in step S35 that there is no EOS position information within the predetermined search range, the process proceeds to step S37.
The CPU 21 causes an EOS search operation as shown in FIG. 54 to be performed. That is, for example, the EOS point is set to 0, and, for example, as shown in FIG.
If the distance to the point is a search time converted from the reel winding diameter and is not within, for example, -2 minutes, the EO
The search is performed toward the point S. For example, when the search start point P2 is within -2 minutes from the EOS point as shown in FIG. Also, for example, as shown in FIG.
When the search start point P3 is within 2 minutes from the EOS point, for example, as shown in FIG.
If EOS is not within 2 minutes of EOS point,
Search for a point.

Referring back to FIG. 53, after the processing in step S37,
When the process proceeds to step S38, the CPU 21
It is determined whether the search has been completed. That is, here, the EOSR-ID and E
By comparing the time code of the OS Point with the value (time code) read from the magnetic tape 30, it is determined whether or not the EOS search has been completed. In the step S38,
When the EOS search has been completed, the process proceeds to step S39.

On the other hand, if the EOS search has not been completed in step S38, it is determined in step S40 whether or not the search range has exceeded 2 minutes by converting the reel winding diameter into the search time. When it is determined that the time has exceeded the limit, the process returns to step S37. When it is determined that the time has exceeded the limit, the user is informed of this by, for example, turning on an alarm or displaying on the monitor 29 in step S44.
In step 45, the reproduction is started and the lamp provided on the recording button on the operation panel is blinked. In this state,
When the user finds the final recording position and presses the record button,
An EOS point is recorded on the magnetic tape 30.

When the flow advances to step S39, the reproduction is started. Then, in step S41, for example, 1
It is determined whether or not there is a non-recording portion for about 5 frames. If there is no non-recording portion, the process proceeds to step S44, and if there is a non-recording portion, the process proceeds to step S42.

In step S42, after the alarm and the like are turned off, recording is started in step S43.

As described above, according to the present embodiment, it is possible to construct a system for preventing overwriting of a location once recorded. For example, an erroneous erasure prevention system can be constructed without switching a menu operation or a cassette recording prevention mechanism. it can. Further, according to the present embodiment, even if the cassette is repeatedly inserted and ejected, it is easy to confirm the final recording point, and it is possible to reduce the time required for cueing to the final recording point after inserting the cassette. After the recording and playback confirmation, it is easy to find the next cue and shorten the recording preparation period. From these facts, in the present embodiment, it is possible to construct a system compatible with conflicting specifications of prevention of erroneous erasure and improvement of recording operability. as a result,
For example, the burden on the VTR operator can be reduced, and erroneous erasure can be prevented even if the operator or device changes. In addition, recording can be performed safely even without a dedicated engineer such as a video engineer, and as a result, efficient operation such as reduction of labor costs can be performed.

Next, as one operation example using the metadata on the memory tag 37, in the present embodiment, the field frequency (F
The information Q) can be written and read by the reader / writer, so that the field frequency and data bit of the video signal can be reduced without reproducing the magnetic tape 30 in a system in which the field frequency and data bit rate of the video signal are variable. Information about the rate can be obtained, and processing optimal for that method can be performed.

That is, for example, in the case of the VTR of FIG. 1 of the first embodiment, when the cassette 31 is inserted into the VTR, the reader / writer 26 built in the VTR is The attached non-contact type memory tag 37 is recognized, and reading of data (metadata) from the memory tag 37 is started. At this time, the 000Ah block in the read metadata is used. 33 recorded in the Bh byte of FIG.
Field frequency (recorded video frequency) as shown in
By checking the data bit rate (video recording bit rate) information, the field frequency and data rate of the video signal recorded on the magnetic tape 30 can be specified. VTR of the present embodiment
Is to switch (change) various setting values and parameters for video signal processing inside the own device so as to match the field frequency and the data rate when the field frequency and the data rate are specified. This makes it possible to perform optimal signal processing on the video signal recorded on the magnetic tape 30. Therefore, according to the VTR of the present embodiment, it is possible to prevent the occurrence of video noise due to processing at an incorrect field frequency or data rate, and to achieve optimal and smooth video reproduction and recording.

Also, for example, in FIG. 1 of the third embodiment,
In the editing system shown in FIG. 1, the cassette 31 is loaded into the VTRs 71 and 72 and the VTRs 71 and 72 are loaded.
In the case of editing a signal recorded in the cassette 31 loaded in a non-linear manner in a non-linear manner, an optimal offline editing can be realized as follows. That is, for example, when the cassette 31 is loaded in the VTR 71 first, the VTR 71 at this time reads the metadata from the memory tag 37 of the label attached to the cassette 31 by the reader / writer 26, and further reads the metadata. The metadata is sent to the terminal 60. Terminal 60
Stores the field frequency and data bit rate information in the metadata transmitted from the reader / writer 26 of the VTR 71. Next, assuming that the cassette 31 is loaded in the VTR 72, the VTR 72 is also
Similarly, the cassette 31 is read by the reader / writer 26.
The metadata is read from the memory tag 37 of the label attached to the terminal 60, and the read metadata is sent to the terminal 60. At this time, the terminal 60 first
71, the field frequency and data bit rate information sent from the reader / writer 26,
The field frequency and the data bit rate information transmitted from the reader / writer 26 of the P.72 are compared with each other, and when the information indicates the same content, the fact that editing is possible as it is is displayed on a monitor, for example. Inform the editor by doing the same, but if the information shows different contents, editing using the video signal of a different field frequency or data bit rate will be performed if edited as it is, so it is not possible to edit A warning to the effect that this is not possible is notified to the editor by, for example, displaying on a monitor or outputting by voice. This makes it possible to avoid system problems at the time of editing without imposing unnecessary burden on the editor.

Also, for example, in FIG. 1 of the third embodiment,
In the editing system shown in FIG. 1, the cassette 31 is loaded into the VTRs 71 and 72 and the VTRs 71 and 72 are loaded.
In the case where the editing device 74 performs online linear editing of a signal recorded in the cassette 31 loaded into the cassette 31, optimal linear editing can be realized as follows. That is, for example, if the cassette 31 is loaded in the VTR 71 first, the VTR 7
1 is the cassette 31 by the reader / writer 26.
The metadata is read from the memory tag 37 of the label attached to the editing device 74, and the read metadata is sent to the editing device 74. The editing device 74 uses the above-mentioned field frequency and data bit rate information in the metadata sent from the reader / writer 26 of the VTR 71 to set various values and parameters for video signal processing in online editing performed by the editing device 74. Are switched (changed or initialized) so as to match the field frequency and the data bit rate. Next, assuming that the cassette 31 is loaded in the VTR 72, the VTR 7
2 also has a memory tag 37 of a label attached to the cassette 31 by the reader / writer 26, similarly to the VTR 1.
, And the read metadata is sent to the editing device 74. At this time, the editing device 74 compares the field frequency and data bit rate information transmitted from the reader / writer 26 of the VTR 71 with the field frequency and data bit rate information transmitted from the reader / writer 26 of the VTR 72. When the information indicates the same content, the editor is informed that the linear editing is possible as it is, for example, by displaying it on a monitor of the front panel, and the editing by the editor is performed. Perform online editing according to the operation information. On the other hand, when the field frequency and the data bit rate information indicate different contents, the editing device 74 performs editing using video signals of different field frequencies and data bit rates if the editing is performed as it is. A warning to the effect that editing is not possible is displayed on the monitor of the front panel, for example, to notify the editor. This makes it possible to avoid system problems at the time of editing without imposing unnecessary burden on the editor.

In the above description, the cassette 31 is
An example has been described in which information is read from the memory tag 37 by the reader / writer 26 incorporated in the VTR and loaded in the VTR.
For example, the field frequency and the data bit rate information can be confirmed in advance using a reader / writer 50 configured as a single unit such as a handy type. In this case, in the system for performing the above-described nonlinear editing, the setting of the system itself (terminal 6
0 is stored as the system setting) and the field frequency and data bit rate information of the video signal recorded in the cassette 31 read by the reader / writer 50, and the system setting and the Can detect a cassette 31 having a different setting. This makes it possible to grasp the uneditable cassette before the editing operation. Also, the field frequency and data bit rate information used in the system are stored in advance in the handy type reader / writer 50, and the field frequency and data bit rate information are read from the memory tag 37 of the cassette 31 to be used for editing. By comparing the information with the previously stored information, a cassette that cannot be handled by the nonlinear editing system can be detected without using the terminal 60 or the like.

As described above, according to the present embodiment, it is necessary to detect the inoperable state before operating and operating the editing system, that is, to detect the video signal before actually recording and reproducing the signal on the cassette 31. Detects the field frequency and data bit rate of the video signal and takes preventive measures such as warnings, so that problems such as video noise caused by editing video signals with the wrong field frequency and data bit rate can be anticipated. And smooth editing becomes possible. In addition, since the occurrence of video noise can be prevented in this way, it is possible to avoid a situation in which a monitor or the like breaks down due to, for example, video noise generated by incorrect editing, and also to reduce maintenance costs. effective. Further, according to the present embodiment, a cassette that cannot be operated in the system in an offline environment can be specified by using, for example, a handy type reader / writer 50 or the like. Invasion can be prevented beforehand.
As described above, according to the present embodiment, the inoperable state of the editing system can be automatically detected and avoided, so that the burden on the system operator (editing worker) can be reduced.

Next, as one operation example using the metadata on the memory tag 37, in the present embodiment, the above-described audio status (AD Status) information is stored in the non-contact memory tag 37. By making it possible to write and read by the reader / writer, it is possible to obtain information about the recording system of the audio signal recorded on the magnetic tape 30 without reproducing the signal recorded on the magnetic tape 30. It is possible to perform the most suitable processing for the method.

That is, for example, in the case of the VTR shown in FIG. 1 of the first embodiment, when the cassette 31 is inserted into the VTR, the reader / writer 26 built in the VTR becomes the cassette 31 The attached non-contact type memory tag 37 is recognized, and reading of data (metadata) from the memory tag 37 is started. At this time, the 000Ah block in the read metadata is used. By checking the audio status information recorded in the Ch to Fh bytes of
It is possible to specify the recording method of the audio signal recorded on the magnetic tape 30. VTR of the present embodiment
Is to switch (change) various setting values, parameters, and the like for audio signal processing in the own device so as to match the audio signal method when the recording method of the audio signal is specified. As a result, it is possible to perform optimal signal processing on the audio signal recorded on the magnetic tape 30. Therefore, according to the VTR of the present embodiment, it is possible to prevent generation of audio noise due to erroneous audio signal processing, thereby enabling optimal and smooth audio reproduction and recording.

In addition, for example, FIG.
In the editing system shown in FIG. 1, the cassette 31 is loaded into the VTRs 71 and 72 and the VTRs 71 and 72 are loaded.
In the case of editing a signal recorded in the cassette 31 loaded in a non-linear manner in a non-linear manner, an optimal offline editing can be realized as follows. That is, for example, when the cassette 31 is loaded in the VTR 71 first, the VTR 71 at this time reads the metadata from the memory tag 37 of the label attached to the cassette 31 by the reader / writer 26, and further reads the metadata. The metadata is sent to the terminal 60. Terminal 60
Stores the audio status information in the metadata transmitted from the reader / writer 26 of the VTR 71. Next, assuming that the cassette 31 is loaded into the VTR 72, the VTR 72 also reads metadata from the memory tag 37 of the label attached to the cassette 31 by the reader / writer 26 similarly to the VTR 1, and further reads the read metadata. The data is sent to the terminal 60.
At this time, the terminal 60 compares the audio status information sent from the reader / writer 26 of the VTR 71 with the audio status information sent from the reader / writer 26 of the VTR 72, and the information has the same content. Is displayed, the editor is notified that editing is possible as it is, for example, by displaying it on a monitor, etc. On the other hand, when the information indicates different contents, editing is performed as it is A warning to the effect that editing is not possible due to editing using a different type of audio signal is notified to the editor by, for example, displaying it on a monitor or outputting it by voice.
This makes it possible to avoid system problems at the time of editing without imposing unnecessary burden on the editor.

Also, for example, FIG.
In the editing system shown in FIG. 1, the cassette 31 is loaded into the VTRs 71 and 72 and the VTRs 71 and 72 are loaded.
When the editing device 74 performs online linear editing of a signal recorded in the cassette 31 loaded in the cassette 31, optimal linear editing can be realized as follows. That is, for example, if the cassette 31 is loaded in the VTR 71 first,
Reads the metadata from the memory tag 37 of the label attached to the cassette 31 by the reader / writer 26, and sends the read metadata to the editing device 74. The editing device 74 uses the audio status information in the metadata transmitted from the reader / writer 26 of the VTR 71 to send various setting values and parameters for audio signal processing in online editing performed by the editing device 74 to the above. Switching (change or initialization) so as to match the recording method of the audio signal. Next, VTR
Assuming that the cassette 31 is loaded in the VTR 72, the VTR 72 at this time is also
The metadata is read from the memory tag 37 of the label affixed to the cassette 31, and the read metadata is sent to the editing device 74. At this time, the editing device 74 first transmits to the reader / writer 26 of the VTR 71.
Is compared with the audio status information sent from the reader / writer 26 of the VTR 72. If the information indicates the same content, linear editing can be performed as it is. Is displayed to the editor by, for example, displaying it on the monitor of the front panel, and online editing is executed in accordance with the editing operation information from the editor. On the other hand, when the audio status information indicates different contents, the editing device 74 issues a warning that editing cannot be performed because editing using an audio signal of a different method is performed if editing is performed as it is, for example. The editor is notified by displaying it on the monitor of the front panel. This makes it possible to avoid system problems at the time of editing without imposing unnecessary burden on the editor.

In the above description, the cassette 31 is
An example has been described in which information is read from the memory tag 37 by the reader / writer 26 incorporated in the VTR and loaded in the VTR.
For example, the audio status information can be checked in advance using the reader / writer 50 configured as a single unit such as a handy type. In this case, in the system for performing the above-described nonlinear editing, the setting of the system itself (the value stored as the system setting in the terminal 60) and the reader / writer 50
By comparing with the audio status information about the audio signal recorded in the cassette 31 which is read in the cassette 31, the cassette 31 having the setting different from the system setting can be detected. This makes it possible to grasp the uneditable cassette before the editing operation. Also, the audio status information used in the system is stored in the handy type reader / writer 50 in advance, and the audio status information is read from the memory tag 37 of the cassette 31 to be used for editing. By performing the comparison, it is possible to detect a cassette that cannot be handled by the non-linear editing system without using the terminal 60 or the like.

As described above, according to the present embodiment, the operation inoperable state is detected before the editing system is operated and operated, that is, before the signal is actually recorded and reproduced on the cassette 31, the audio signal is detected. Detecting the recording method of the audio signal and taking preventive measures such as generating a warning, it is possible to prevent problems such as audio noise caused by editing audio signals of the wrong method, and to enable smooth editing. Become. In addition, since the occurrence of audio noise can be prevented in this way, it is possible to avoid a situation in which a speaker, an amplifier, and the like are destroyed due to, for example, audio noise generated due to incorrect editing, thereby reducing maintenance costs. Is also effective. Further, according to the present embodiment, a cassette that cannot be operated in the system in an offline environment can be specified by using, for example, a handy type reader / writer 50 or the like. Invasion can be prevented beforehand. As described above, according to the present embodiment, the inoperable state of the editing system can be automatically detected and avoided, so that the burden on the system operator (editing worker) can be reduced.

Next, as one operation example using the metadata on the memory tag 37, in the present embodiment, the information on the number of threads of the cassette 31 as described above is stored in the non-contact memory tag 37 as described above. Write by reader / writer,
By making it readable, the cassette 31 can be managed.

That is, for example, in the case of the VTR shown in FIG. 1 of the first embodiment, when the cassette 31 is inserted into the VTR, the reader / writer 26 built in the VTR becomes The attached non-contact type memory tag 37 is recognized, and reading of data (metadata) from the memory tag 37 is started. At this time, the 0009h block of the read metadata is By checking the information on the number of threads recorded in the Ah and Bh bytes, the use status of the cassette 31 can be known, and management of whether or not the cassette 31 can be used and how many times it can be used later is performed accordingly. Becomes possible. The items of the management and the operation using the same include, for example, “management of the number of threads of the cassette to the VTR”, “monitoring of the number of times of the threads of the cassette and display of a warning corresponding thereto”, “management system of the number of uses of the cassette” Is mentioned.

First, management of the number of times of threading of a cassette will be described.

For example, in FIG. 1, if the cassette 31 is loaded in the VTR, the VTR at this time reads the metadata from the memory tag 37 of the label attached to the cassette 31 by the reader / writer 26 and reads the metadata. The information on the number of threads is checked from the read metadata, and the number of times is incremented by one to rewrite (update) the information on the number of threads recorded in the memory tag 37.

Here, in the present embodiment, the information on the number of threads is checked, and when the number of threads exceeds a certain value, a warning is issued and the processing according to the check result is as follows. It has been made possible.

For example, the VTR shown in FIG. 1 has a function of executing a display for maintenance using the monitor 29 of the operation panel 28. Then, when the maintenance display function is activated, the number of cassette threads can be checked. Further, the VTR of the present embodiment has a function of displaying a warning when the number of inserted cassette threads exceeds a certain value. It also has a function of determining whether to display a warning based on the error level.

The flow of the warning display according to the number of threads is as shown in FIG. In FIG. 55,
When the cassette 31 is inserted at step S10, the VTR first proceeds to step S11.
Setting that the data of the memory tag 37 of the label 32 attached to the label 1 is read by the reader / writer 26, the information of the number of threads is checked out of the read metadata, and the number of threads indicates a warning. It is determined whether the value is equal to or greater than the value.

If it is determined in step S11 that the number of threads is equal to or greater than the warning display set value, a cassette use status warning is displayed on the monitor 29 of the operation panel 28 in step S15.

On the other hand, if it is determined in step S11 that the number of threads is less than the warning display set value, the process proceeds to step S11.
As 12, reproduction is performed using the cassette 31.

At this time, as step S13,
It is determined whether or not the number of threads is equal to or larger than a value set in advance to execute error rate monitoring.

If it is determined in step S13 that the error rate is less than the value set in advance to monitor the error rate, the next process is executed in step S16.

On the other hand, if it is determined in step S13 that the error rate is equal to or higher than the value set in advance to perform the error rate monitoring, the error rate of the signal reproduced from the magnetic tape 30 is determined in next step S14. Is determined to be equal to or greater than a set value for performing a warning display.

In step S14, if it is determined that the warning display based on the error rate is to be executed and the value is smaller than a preset value, the following processing is executed in step S16.

On the other hand, if it is determined in step S14 that the warning display based on the error rate is to be executed and the value is equal to or greater than the preset value, the process proceeds to step S15, where the cassette is displayed on the monitor 29 of the operation panel 28. Displays a status warning.

As described above, the operator of the VTR and the administrator of the cassette can know the state of the cassette.

Next, the cassette management based on the number of threads will be described with reference to the configuration of FIG. 11 as an example.

In the configuration of FIG. 11, the terminal 60 uses the external handy type reader / writer 50 to
The contents of the memory tag 37 provided on one label 32 can be read, and the cassette use management software according to the present embodiment is installed in the terminal 60. That is, the cassette use management software includes a function of initially issuing the memory tag 37 and a function of managing information on the number of times of cassette threads using information stored in the memory tag 37. Specifically, the reader / writer 50 reads the information recorded in the memory tag 37 provided on the label 32 of the cassette 31 and manages the discard or change of the purpose of use according to the frequency of use of the cassette and the purpose of use. Instructs the user.

FIG. 56 shows an example of a management table when the above-mentioned cassette is managed.

When the information in the memory tag 37 provided on the label 32 of each cassette 31 is read by the reader / writer 50, the management software reads the information from the memory label 37 as shown in FIG. A management table based on the read information is displayed, and information on the purpose of use and the number of threads is combined to suggest the status of the cassette to the user. The above management table will be described in detail. In FIG. 56, for example, regarding a cassette with a tape ID of HD-10001, the usage purpose is for a library, and the current thread count is 6 (I.e., the cassette whose tape ID is D2-222029) is used for drama, and the current thread count is 20 times ("Yes"). Is possible). Also, the tape ID
Is SX-23478, the usage purpose is re-use, and the current thread count is 100
Since it is the number of times, it is determined that it cannot be used (that is, it should not be used any more). If the tape ID is IMX-
For the cassette set to 67870, the purpose of use is re-use, and the current thread count is 20, so it is determined to be "good" (that is, usable). Here, for example, the number of threads of the cassette of D2-222029 and the cassette of IMX-67870 are the same, but the determination results are different. This is because, while making a drama, it is necessary to use a cassette that is as good as possible (the state of the magnetic tape is good), but some deterioration is allowed in a reusable application. Also,
When the reused tape has a thread count of 100 or less and is set to be discarded, in FIG. 56, the tape ID whose thread count is 100 is SX-2347.
The cassette 8 is subject to tape discard processing, and a comment such as "Scheduled to be discarded on June 19, 2000" is entered.

In the case of the present embodiment, FIG.
By using the terminal 60 of FIG. 11 and the handy type reader / writer 50 corresponding to the management table as described above, the information of the thread count can be read directly from the memory tag 37 provided on the label of the cassette 31. For example, as shown in FIG. 57, by sequentially scanning the information of the memory tags 37 of the plurality of cassettes 31 stored in the shelf 300, it is possible to detect the necessity of discarding each of the cassettes 31 stored in the shelf 300, Further, when each shelf is classified according to the purpose of use, it is possible to find a cassette that does not match the purpose of use.

As described above, according to the present embodiment, since the number of times of use of the cassette and the state of deterioration of the magnetic tape 30 can be grasped, the amortization of the cassette in an objective manner can be determined. Further, according to the present embodiment, since the use of the deteriorated magnetic tape 30 can be prevented beforehand, stable recording and reproduction can be managed. In addition, since it is possible to manage the use of cassettes and work cassettes whose usages are reusable, and the use of archives, etc., with respect to the cassettes and work cassettes, the operation cost can be reduced. Further, according to the present embodiment, the device automatically detects tapes that have been used more than necessary, and it is possible to take safety measures such as generation of a warning. As a result, the system operator manages them. In this case, the burden on the user can be reduced. In addition, according to the present embodiment, tape management in an offline environment can be performed by using a handy type reader / writer 50 or the like.

Next, the details of the non-contact type memory tag 37 and its reader / writers 26 and 50 will be described with reference to FIGS.

FIG. 58 shows a schematic configuration showing the functions of the non-contact type memory tag 37 and the reader / writer 26.

The non-contact type memory tag 37 operates in response to the electromagnetic field when the relative distance from the reader / writer 26 which is a device for forming the electromagnetic field in the vicinity is within a limit distance responsive to the electromagnetic field, Information is exchanged with the reader / writer 26 in a non-contact manner.

Before describing the detailed structure of the non-contact type memory tag 37, the appearance of the main part of the non-contact type memory tag 37 and the operation when the memory tag 37 is used by the reader / writer 26 will be briefly described. Will be described.

FIG. 59 shows the appearance of a non-contact type memory tag 37 realized in a one-chip configuration. As shown in FIG. 59, the memory tag 37 is provided with a coil antenna 36 having a conductive pattern formed in a loop on a chip serving as a base.
5 and a capacitor C are connected. The capacitor C adjusts the resonance frequency.

The non-contact type memory tag 37 is inductively coupled to the coil antenna 24 of the reader / writer 26 using an electromagnetic field as a medium. The non-contact type memory tag 37 transmits and receives information in a non-contact manner and receives power supply by mutual induction. , The demodulation units 102 connected to the coil antenna 36, respectively.
And a transmission / reception unit 107 including a modulation unit 103, and a power supply unit 104 connected to the coil antenna 36, respectively.
A clock extraction unit 105, a control unit 101 for controlling the overall operation, an encoding / decoding unit 106 connected to the control unit 101, and the storage holding operation connected to the control unit 101 are unnecessary. Rewritable semiconductor memory 10
0.

The demodulation unit 102 equalizes the induced current generated in the coil antenna 36, detects and demodulates the information, restores the information, and supplies the information to the control unit 101. Modulation unit 1
Numeral 03 denotes a modulation process of the reflected wave by controlling the load impedance to be interrupted by the coil antenna 36 based on the response information obtained by encoding the reproduction information supplied from the control unit 101, or a power supply based on the response information. Either a control for intermittently connecting a load connected directly or indirectly to the unit 104, or a configuration for feeding a carrier wave of another frequency modulated (for example, ASK modulation) with response information to the coil antenna 36 is provided. Configuration.

To explain this further, in the configuration in which the load impedance of the coil antenna 36 is controlled based on the response information, the reflected wave of the carrier wave is emitted from the coil antenna 36 which continues to receive the action of the electromagnetic field from the reader / writer 26. In addition, by controlling the load impedance based on the response information, the coil antenna 36 is controlled.
Is controlled so that the reflected wave is modulated by the above-described response information.

On the other hand, in the configuration in which the load of the power supply is controlled based on the response information, the load on the power supply unit 104 is switched by the load switching control based on the response information to change the impedance of the memory tag 37 in the inductively coupled state. It is configured to perform modulation by causing The impedance variation on the memory tag 37 side is detected on the reader / writer 26 side in the inductively coupled state as a variation in terminal voltage of the coil antenna 24 or a variation in input power.

As described above, when the coil antenna 36 of the memory tag 37 receives the electromagnetic wave emitted from the reader / writer 26, it processes the induced current generated by mutual induction to demodulate the information, and then transmits it to the reader / writer 26. Based on the information to be transmitted, the load impedance of the coil antenna 36 is controlled and transmitted (information transmission by a reflected wave of a carrier wave), or the load of the power supply of the memory tag 37 is controlled and transmitted based on the information transmitted to the reader / writer 26. (Information transmission due to impedance fluctuation), or modulating a carrier wave of another frequency with information transmitted to the reader / writer 26 and feeding it to the coil antenna 36 for transmission (transmission of another frequency generated by the transmission function of the memory tag 37). Information transmission by waves).

The power supply unit 104 receives and rectifies a high-frequency induced current generated by the coil antenna 36 through mutual induction through an electromagnetic field, and supplies the rectified current to each unit as a power supply.
Further, a voltage stabilizing circuit for outputting a stable DC voltage can be provided. And each part can operate by this supply electric power. Therefore, it is not necessary to prepare another power source such as a battery for the memory tag 37. However, it goes without saying that a configuration in which another power source such as a battery is used as the main power source or the sub power source is also possible.

The clock generation section 105 has a frequency dividing circuit.
A clock signal having a carrier frequency is output based on the carrier wave received by the coil antenna 36, and this clock signal is frequency-divided to generate and output a master clock as an operation reference clock for each digital circuit unit.

As described above, the semiconductor memory 100
It records metadata and the like related to the cassette 31 to which the label having the memory tag 37 is attached and the recorded material. Under the control of the control unit 101, each metadata is stored in the memory map as described above. Information is recorded and reproduced.

Control section 101 sends the demodulated signal provided from transmitting / receiving section 107 at the time of reception to encoding / decoding section 106. The encoding / decoding unit 106 includes the control unit 101
The control unit 101 performs decoding of the information supplied from the base station and error correction based on the CRC code, and returns the result to the control unit 101. The control unit 101 extracts instruction information therefrom. In this way, the information provided from the reader / writer 26 via the electromagnetic field is restored.

Further, at the time of reply, the encoding / decoding section 106 adds an error correction code such as a CRC code to the information supplied from the control section 101, and outputs response information obtained by encoding the data to which the error correction code has been added. It is returned to the control unit 101.

The encoding / decoding unit 106 has a data error correction function, but may have a data encryption / decryption function. Further, the present invention is not limited to the CRC method, and other error correction circuits can be applied.

The control section 101 sends the demodulated signal supplied from the demodulation section 102 to the encoding / decoding section 106 based on the clock supplied from the clock extraction section 105, and various information based on the error-corrected signal. , And also separate and extract information for recording, analyze these instruction information,
It is configured as a semiconductor logic control circuit having a sequence control function for sequentially executing predetermined processing in a predetermined procedure. The technology of a semiconductor sequence controller that determines conditions in accordance with such a predetermined procedure and sequentially executes, for example, the opening and closing of a plurality of gates in time series is widely applied, and the control unit 101 uses this technology.

[0207] On the other hand, the modulation section 103 which has received the information via the control section 101 executes a modulation process based on a predetermined modulation method. In response to this, the transmission / reception unit 107 sends the modulated signal to the reader / writer 26 via the coil antenna 36. As described above, this transmission is performed by a transmission wave by the transmission function of the memory tag 37, by a reflected wave, or on the principle of impedance fluctuation.

Next, the principle of detecting the contents of the semiconductor memory 100 in the memory tag 37 by the reader / writer 26 will be described.
This will be described with reference to FIGS.

The coil antenna 24 on the reader / writer 26 side
Is the first antenna, and the coil antenna 36 of the memory tag 37 is the second antenna. When the first and second antennas face each other and the magnetic field generated by the current flowing through the first antenna is captured by the second antenna, The magnetic field generated by the current changes in response to the change in the current flowing through the first antenna. As a result, a change occurs in the magnetic flux passing through the second antenna, and an electromotive force is generated in the second antenna by mutual induction. The electromotive force V2 generated in the second antenna is proportional to the change in the current I1 of the first antenna, and is expressed by Expression (1) under the tuning condition where M is a mutual inductance. The current I2 flowing through the second antenna is It depends on the characteristics of the connected circuit.

V2 = M (dI1 / dt) (1) On the other hand, the coil antenna 36 (second antenna) of the memory tag 37 has resistance or reactance (inductive reactance ωL or capacitive reactance 1 / ωC) as load impedance. Can be connected, and the interruption of the load impedance to the second antenna is controlled by the content (“1” or “0”) of the data transmitted from the memory tag 37.

When the reader / writer 26 is the primary side and the memory tag 37 inductively coupled with the reader / writer 26 is the secondary side as described above, the total impedance of the secondary side is Z. Inductive coupling 4 shown at 60
Can be treated as a terminal network. Here, the impedance Zie measured on the primary side is calculated as follows.

Ω is the angular frequency, the inductance of the coil antenna 24 of the reader / writer 26 is L1, the electromotive force is V1,
The current is I1, and the coil antenna 36 of the memory tag 37 is
Is L2, the electromotive force is V2, the current is I2,
Further, assuming that the mutual inductance between the coil antennas 24 and 36 is M, the induced electromotive force V1 under the tuning condition is expressed by the following equation (2).
In addition, the induced electromotive force V2 is represented by Expression (3).

V1 = jω * L1 * I1 + jω * M * I2 (2) V2 = jω * M * I1 + jω * L2 * I2 (3) Here, since the direction of the current I2 is reversed, the equation (4) is obtained.
become.

V2 = −Z * I2 (4) From the above, the impedance Zie on the reader / writer 26 side is obtained.
Is jω * as the first term, with the symbol “**” being the square.
(L1−M ** 2 / L2) and jω * as the second term
(M ** 2) * Z / L2 * (Z + jω * L2).

Here, when the second term of the preceding term is modified as in equations (5) and (6), it becomes 1 / (u2 + u3).

U2 = L2 / jω * (M ** 2) (5) u3 = (L2 ** 2) / Z * (M ** 2) (6) Therefore, if the first term is u1, the reader The impedance Zie on the writer 26 side is as shown in Expression (7).

Zie = u1 + 1 / (u2 + u3) (7) As a result, an equivalent circuit of the inductively coupled four-terminal network can be represented as shown in FIG.

The impedance Z on the memory tag 37 side is
When the circuit is controlled to have an infinite impedance according to the content of the data to be transmitted (either "1" or "0", for example, "1"), the term of equation (8) becomes infinitely small. Therefore, the state where the data is "1" is observed on the reader / writer 26 side as the impedance of Expression (9).

U3 = (L2 ** 2) / Z * (M ** 2) (8) Zie1 = jω * L1 (9) On the other hand, the impedance Z on the memory tag 37 side is determined by the data content (“1” If zero impedance is set according to any one of “0”, for example, “0”, 1
The term of / (u2 + u3) becomes infinitesimal, and thus the state of data "0" is observed on the reader / writer 26 side as the impedance of equation (10).

Zie0 = jω * (L1−M ** 2 / L2) (10) This is expressed as Expression (12) using the coupling constant k of Expression (11) of the coil antennas 24 and 36.

K ** 2 = M ** 2 / L1 * L2 (11) Zie0 = jω * L1 * (1-k ** 2) (12) As described above, "1" of the data on the memory tag 37 side is obtained. The state of “0” is observed as the above-described different impedance values Zie1 and Zie0 on the reader / writer 26 side, so that the state of “1” or “0” of the data can be easily detected.

Furthermore, by changing the impedance Z on the memory tag 37 side to any different value between zero and infinity, it is possible to observe different impedance values Zie corresponding to each. As described above, the impedance Zi on the primary side (reader / writer side) according to the load Z on the secondary side (memory tag side) by mutual induction.
e changes, the impedance Zie on the primary side
By detecting the change, the state (data) on the memory tag 37 side can be detected.

Next, the reader / writer 26 transmits the information
13, a coil antenna 24, an information detecting unit 111,
The memory tag 37 has a function as the control determination unit 112.
It operates in transmission mode and reception mode. In the transmission mode, information to be recorded in the memory tag 37 is supplied to the memory tag 37, and in the reception mode, information reproduced from the memory tag 37 is supplied.

[0224] The information transmitting section 113 has a clock generating function, a modulating function, and a power amplifying function, and generates a clock signal of a carrier frequency and a master clock. The carrier wave is subjected to, for example, ASK modulation based on the data to form a modulated signal, which is then power-amplified to drive the antenna 24. In the reception mode, the antenna 24 is driven by amplifying the power of the carrier wave without any modulation.

The antenna 24 is constituted by a loop antenna for both transmission and reception. In the transmission mode, an electromagnetic field based on a modulated signal is formed. In the reception mode, an electromagnetic field based on a carrier wave is formed. Memory tag 37
And inductive coupling via the electromagnetic field with the coil antenna 36 on the side. The information detection unit 111 has a function of detecting an antenna terminal voltage and a function of demodulation. Further, the control determination unit 112 includes an encoding / decoding function, a control function of an operation of the entire configuration,
It has a function as the interface unit 23.

In the transmission mode, the control judging section 112 organizes transmission information, that is, a command to be added to the memory tag 37 based on a signal received from the interface section 23, and the information transmitting section 113 modulates a carrier based on the command. Then, the power is amplified and the antenna 24 is driven. As a result, an electromagnetic field is formed by the carrier wave on which the command is placed, and a command is given to the memory tag 37 by this electromagnetic field, and power is supplied at the same time.

The transmission information includes a command for reproducing and transmitting the information recorded from the memory tag 37 and a command for recording given data in the memory tag 37 and the data.

Even in the reception mode, an electromagnetic field is continuously formed by an unmodulated carrier wave on which no command is carried. With this electromagnetic field, the power supply to the memory tag 37 is continued, and the response from the memory tag 37 is detected. The response carries the reproduction information read from the memory tag 37.

Here, when the memory tag 37 changes the load state of the antenna 36 on the memory tag 37 side or changes the power load on the memory tag 37 side in accordance with the response contents, the antenna 24 and the memory tag 37 side change. Since the antenna 36 is in an inductively coupled state during this time, the memory tag 3
The terminal voltage of the antenna 24 fluctuates according to the load fluctuation on the 7 side. The information detection unit 111 detects and demodulates this terminal voltage fluctuation, and passes it to the control determination unit 112. The control determination unit 112 corrects the error, restores the response, and sends it out of the interface unit 23.

As described above, the reader / writer 26 reads out information from the memory tag 37 or records information by transmitting a command including transmission information in the transmission mode. In particular, by transmitting a reproduction command designating the metadata or the like, various types of metadata stored in the memory tag 37 are read, and a recording command designating the metadata and metadata to be recorded are further read. By transmitting, it is recorded in the memory tag 37.

FIG. 62 shows the memory tag 3 described above.
Cassette 3 on which label 32 with built-in 7 is attached
1 and the appearance and use state of a handy type reader / writer 50 that transmits and receives data to and from the memory tag 37 of the label 32.

A label 32 containing the above-mentioned memory tag 37 is attached to the cassette half of the cassette 31, and when a so-called “sharpening” operation is performed by a handy type reader / writer 50, the memory tag is attached. Data writing / reading to / from the memory is performed.

The handy type reader / writer 50 is provided with the coil antenna 24 (located on the label 32 side in the figure) and a display unit 201 such as a liquid crystal display, a power button 205 and the like. And a handle portion 206 on which a reading start button 204 and other various keys 202 are arranged and which can be held by a person.

[0234]

According to the present invention, when a video signal is recorded on a recording medium, metadata relating to the video signal is generated and written into a predetermined storage area of the non-contact information storage means. Based on the metadata related to the video signal read from the information storage unit, the settings related to the video signal of the device are matched with the settings corresponding to the metadata, so that the metadata related to the video signal can be edited, It is possible to detect accurately and quickly before starting work such as sending, etc. Also, when the setting related to the video signal of the device and the setting corresponding to the metadata do not match, a warning is issued, and the video signal of the wrong system Problems such as generation of noise due to editing of each other can be prevented beforehand. Furthermore, since it is possible to detect a recording medium on which a video signal that is not suitable for the system is recorded in advance, it is possible to prevent such a recording medium from entering the system.
In addition, since such an inoperable state can be automatically detected and avoided, the burden on the system operator can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of a VTR according to a first embodiment of the present invention.

FIG. 2 is a diagram used to describe the format of a component ANC data packet.

FIG. 3 is a diagram used to describe the format of a composite ANC data pattern.

FIG. 4 is a diagram exemplifying a part of metadata defined in SMPTE 298M and 335M.

FIG. 5 is a diagram illustrating another example of metadata defined in SMPTE 298M and 335M.

FIG. 6 is a diagram exemplifying still another part of metadata defined in SMPTE 298M and 335M.

FIG. 7 shows video and audio data formats and A
It is a figure used for description of ux sync block.

FIG. 8 shows Aux in a VTR for recording a high-definition video signal.
It is a figure used for description of a format of a sync block.

9 is a diagram used for detailed description of categories 2 to 6 in FIG. 8;

FIG. 10 is a block diagram illustrating a configuration example of a camera-integrated VTR according to a second embodiment of the present invention.

FIG. 11 is a block diagram illustrating a configuration example of an editing system according to a third embodiment of the present invention.

FIG. 12 is a diagram used for schematically describing a memory map of a non-contact type memory tag on a semiconductor memory.

FIG. 13 shows a memory management table (Memory Management Tabl) of the 0000h block of the memory map.
e) A diagram used for a brief description of the region.

FIG. 14 is the 0h of the 0000h block in the memory map;
FIG. 7 is a diagram used for detailed description of a memory size (Memory_size) of the first h byte.

FIG. 15 is the fifth h of the 0000h block in the memory map;
FIG. 25 is a diagram used for a detailed description of a lot number (Lot_number) of the 6th byte.

FIG. 16 is a diagram used for schematically describing a manufacturing ID table (Manufacture ID Table) area of a 0001h block in the memory map;

FIG. 17 is a diagram used for detailed description of a label ID.

FIG. 18: Hamming 8/4 code
It is a figure used for description.

FIG. 19 is a diagram used to describe a generation operation of a protection bit and data of a Hamming 8/4 code.

FIG. 20 is a diagram showing a conversion table representing a correspondence between a hexadecimal value and a Hamming 8/4 code (binary number), which is referred to when a conversion check of a Hamming 8/4 code is performed.

FIG. 21 is a diagram used to explain data of a Hamming 8/4 code seen from outside the controller.

FIG. 22 is a format definition table (Format Definitio) of the 0002h block of the memory map;
n Table) is a diagram used for a brief description of a region.

FIG. 23 is a diagram used for detailed description of a common area (Common Area) area after the 0003h block in the memory map.

FIG. 24 shows the 0h of the 0008h block in the memory map;
It is a figure used for description of the serial number represented by 4 bytes of-3h bytes.

FIG. 25 is the 0h of the 0009h block in the memory map;
FIG. 10 is a diagram used to describe a pointer (Pointer) of the first h byte and an ID number (EOSR-ID) of the second h and third h bytes.

FIG. 26 shows the 4h of the 0009h block in the memory map
Remain status described in the byte (RS: Remain
(Status).

FIG. 27: Remaining status (RS: Remain Statu)
FIG. 8 is a diagram used to explain the sixth bit and the fourth bit in s).

FIG. 28h of the 0009h block of the memory map
It is a figure used for description of the time code (Time Data) showing the position (EOS Point) of the last recording point of the 9th byte.

FIG. 29 shows Ah of the 0009h block in the memory map
FIG. 10 is a diagram used for describing a thread count value (Thread Count) indicating the number of times the cassette of the Bh-th byte is inserted.

FIG. 30 is a diagram used to explain a setting example from the 0009h block to the 000Bh block of the memory map;

FIG. 31 is the 0h of the 000Ah block in the memory map;
FIG. 10 is a diagram used for describing a head address (Data TOPP) of a cue point data area of the first h byte.

FIG. 32 shows the 2h of the 000Ah block in the memory map
It is a figure used for explaining the definition (FAT Definition) of the file allocation table of the 4th-4th byte.

FIG. 33 is Bhth of the 000Ah block in the memory map;
Byte field frequency (FQ: Recoding Frequnc)
It is a figure used for description of y).

FIG. 34 is the Chth of the 000Ah block in the memory map;
Audio status in the ~ Fh byte (AD Statu
It is a figure used for description of s).

FIG. 35 is a diagram used to describe an extended common area management table (Extended Area Management Table).

FIG. 36 is a diagram used to describe a data format of a cue point representing one clip area.

FIG. 37 is a diagram used to describe a data structure when two bytes of status are 01h and 00h.

FIG. 38 is a diagram used to explain a data structure when two bytes of status are 07h and 00h.

FIG. 39 is a diagram used to describe the data format of additional information (AdditionalInformation) when the twelfth bit of the status is “1”.

FIG. 40 is a diagram used for detailed description of additional information.

FIG. 41: Extension U defined in SMPTE330M
FIG. 4 is a diagram used to describe a data format of MID (Extended UMID).

FIG. 42. Time Snap of Material Number
FIG. 4 is a diagram used for explaining (Snap).

FIG. 43 is a diagram used to describe a 21-byte basic UMID assembled in this embodiment.

FIG. 44 is a diagram used to explain a basic UMID and signature metadata assembled in the present embodiment.

FIG. 45 is a diagram used to describe the first clip package according to the present embodiment.

FIG. 46 is a diagram showing a byte sequence of a main title according to the present embodiment.

FIG. 47 is a diagram illustrating a byte sequence of a clip package excluding a metadata declaration in the present embodiment.

FIG. 48 is a diagram illustrating byte strings of three types of metadata after the metadata declaration is omitted in the present embodiment.

FIG. 49 is a diagram illustrating a specific byte string of metadata of the number of frames, a subject, and a subtitle.

FIG. 50 shows S from UMID read from the memory tag.
FIG. 14 is a diagram illustrating a restoration table used when restoring a normal UMID defined in MPTE.

FIG. 51 is a diagram used to describe a UMID placed after EAV (End of Active Video) immediately before the tenth line of the SDI Y channel of high-definition video.

FIG. 52 is a diagram used to describe metadata indicating a title placed after the SAV (Start of Active Video) on the tenth line of the SDI Y channel of high definition video.

FIG. 53 is a flowchart showing a flow in a case where a memory label is collated with final recording information on a magnetic tape to specify a final recording position and execute recording.

FIG. 54 is a diagram used for describing an EOS search operation.

FIG. 55 is a flowchart showing a flow of warning display according to the number of threads.

FIG. 56 is a diagram showing an example of a management table when managing a cassette.

FIG. 57 is a diagram used to explain a state in which information of memory tags of a plurality of cassettes stored in a shelf is sequentially scanned.

FIG. 58 is a block diagram showing a schematic configuration representing functions of a contactless memory tag and a reader / writer;

FIG. 59 is a diagram showing an appearance of a non-contact type memory tag realized in a one-chip configuration.

FIG. 60 is a circuit diagram used to describe an inductively coupled four-terminal network.

FIG. 61 is a circuit diagram showing an equalization circuit of the inductive coupling four-terminal network of FIG. 60;

FIG. 62 is a diagram used to explain the appearance of a label with a memory tag attached to a cassette half of a handy type reader / writer and a cassette of the present embodiment.

[Explanation of symbols]

1 video input terminal, 2 input amplifier, 3 SDI
ANC extraction unit, 4 video compression unit, 5 ECC encoder, 6 recording signal processing unit, 7 recording amplifier,
8 recording head, 10 playback head, 11 playback amplifier, 12 playback equalizer section, 13 ECC decoder, 14 video expansion section, 15 SDI ANC addition section, 16 output amplifier, 17 video output terminal,
21 CPU, 22 RAM, 23 interface unit, 24 coil antenna, 25 rotating drum, 26,50 reader / writer, 27 RS-42
2 terminals, 28 operation panel, 29,44 monitor, 3
0 magnetic tape, 31 cassettes, 32 labels,
33 supply reel, 34 take-up reel, 35
IC chip, 36 coil antenna, 37 non-contact type memory tag, 40 lens imaging unit, 41 camera processing unit, 42 SDI adapter, 43 operation unit,
60 terminal, 71,72 VTR, 73 database part, 74 editing device, 75 camera integrated VT
R

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) G06K 19/00 H04N 5/781 510L G11B 27/00 G06K 19/00 H 27/10 Q H04N 5/78 F Term (Reference) 5B035 BB09 BC00 CA23 5B058 CA15 KA02 KA04 KA06 KA08 YA20 5D077 AA08 BA14 BA18 CA02 CA10 CA20 CB06 CB17 DC01 DC37 DE05 DE08 DE13 EA33 EA34 5D110 AA04 AA27 AA29 DA01 DA08 DB04 DC03

Claims (16)

[Claims] When recording a video signal on a replaceable recording medium, a metadata generating means for generating metadata relating to the video signal, and operates in response to an electromagnetic field, and operates via the electromagnetic field. Writing / reading means for writing / reading information to / from a non-contact type information storage means which is attached to or incorporated in the replaceable recording medium and which transmits / receives information to / from the outside by non-contact, An information recording apparatus, wherein metadata is written in a predetermined storage area of the contactless information storage means. 2. The information recording apparatus according to claim 1, wherein said metadata generating means generates metadata relating to a recording frequency and / or a data bit rate of said video signal. Generating a metadata associated with the video signal when recording the video signal on a replaceable recording medium; operating in response to an electromagnetic field and contactlessly via the electromagnetic field; Transmitting / receiving information to / from the outside and writing / reading information to / from a non-contact type information storage means attached to or incorporated in the replaceable recording medium; An information recording method comprising writing data in a predetermined storage area of a contact-type information storage means. 4. The information recording method according to claim 3, wherein metadata relating to a recording frequency and / or a data bit rate of the video signal is generated. 5. A non-contact type information storage means which operates in response to an electromagnetic field, transmits / receives information to / from the outside in a non-contact manner through the electromagnetic field, and is attached to or incorporated in a replaceable recording medium. Means for taking in the stored information; and setting of the video signal of the device in the non-contact type information storage means based on the metadata written as data related to the video signal recorded on the recording medium. An information processing apparatus comprising: a setting control unit that adjusts settings corresponding to data. 6. The metadata related to the video signal,
Metadata relating to the recording frequency and / or data bit rate of the video signal, wherein the setting control means sets the settings relating to the video signal of the device to the recording frequency and / or data of the video signal indicated by the metadata. 6. The information processing apparatus according to claim 5, wherein the bit rate is set according to the setting. 7. A recording frequency and / or a data bit rate of a video signal indicated by metadata read from the non-contact information storage means, and a recording frequency and a recording frequency of another video signal processed together with the video signal. 7. The information processing apparatus according to claim 6, further comprising a warning generating unit that generates a warning when the data bit rate does not match. 8. A non-contact type information storage means which operates in response to an electromagnetic field, transmits / receives information to / from the outside in a non-contact manner via the electromagnetic field, and is attached to or incorporated in a replaceable recording medium. Setting the information related to the video signal of the device based on the metadata written as data related to the video signal recorded on the recording medium in the non-contact information storage means. Adjusting the setting to a setting corresponding to the information processing method. 9. The metadata related to the video signal,
Metadata relating to the recording frequency and / or data bit rate of the video signal, and setting the video signal of the device to the setting of the recording frequency and / or data bit rate of the video signal indicated by the metadata. 9. The information processing method according to claim 8, wherein: 10. A recording frequency and / or data bit rate of a video signal indicated by metadata read from the non-contact information storage means, and a recording frequency and a recording frequency of another video signal processed together with the video signal. 10. The information processing method according to claim 9, further comprising a step of generating a warning when the data bit rate does not match. 11. When recording a video signal on a replaceable recording medium, a metadata generating means for generating metadata related to the video signal, and operates in response to the electromagnetic field, and operates via the electromagnetic field. Writing / reading means for writing / reading information to / from a non-contact type information storage means which is attached to or incorporated in the replaceable recording medium, and which transmits / receives information to / from the outside in a non-contact manner; An information recording device that writes metadata in a predetermined storage area of the non-contact information storage means, and operates in response to an electromagnetic field to exchange information and exchange information with the outside through the electromagnetic field in a non-contact manner. Means for taking in information read from non-contact type information storage means attached to or incorporated in a simple recording medium; An information processing apparatus having setting control means for adjusting settings related to a video signal of a device to settings corresponding to the metadata based on metadata written as data related to the recorded video signal. An information processing system characterized by the following. 12. The metadata generating means of the information recording device generates metadata relating to a recording frequency and / or a data bit rate of the video signal, and the setting control means of the information processing device includes: 12. The information processing system according to claim 11, wherein the setting relating to the video signal is set to the setting of the recording frequency and / or the data bit rate of the video signal indicated by the metadata. 13. The information processing apparatus according to claim 1, wherein the recording frequency and / or the data bit rate of the video signal indicated by the metadata read from the non-contact type information storage means and other data processed together with the video signal. 13. The information processing system according to claim 12, further comprising a warning generating unit that generates a warning when a recording frequency and / or a data bit rate of the video signal do not match. 14. Recording a video signal on a replaceable recording medium, generating metadata related to the video signal, operating in response to an electromagnetic field, and contactlessly via the electromagnetic field. Writing metadata related to the video signal in a predetermined storage area of a non-contact type information storage means attached to or incorporated into the replaceable recording medium while transmitting / receiving information to / from the outside; Reading metadata related to the video signal from the predetermined storage area of the storage unit; and setting the video signal setting of the device to the metadata based on the read metadata related to the video signal. Matching with corresponding settings. 15. Generating metadata relating to the recording frequency and / or data bit rate of the video signal, and setting the video signal of the device to the recording frequency and / or the recording frequency of the video signal indicated by the metadata. 15. The information processing method according to claim 14, wherein the method is set in accordance with the setting of the data bit rate. 16. A recording frequency and / or data bit rate of a video signal indicated by metadata read from the non-contact information storage means, and a recording frequency and a recording frequency of another video signal processed together with the video signal. 16. The information processing method according to claim 15, further comprising a step of generating a warning when the data bit rate does not match.