JP2003196895A - Medium recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device which can make settings of inhibiting or allowing at least one of recording and reproduction by recording media such as a magnetic tape. <P>SOLUTION: VISS/VASS data for carrying control over a magnetic tape 104 and video data retrieval are used to set and record a tape ID, a user ID, video-recording inhibition data, reproduction inhibition data, etc., as tape protection data in the VASS data together with date and time data for retrieval; when the magnetic tape 104 is loaded, the VASS data are read out, and according to the tape protection data in the VASS data, inhibition/permission control over reproducing operation and video-recording operation of the magnetic tape 104 is carried out. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium recording / reproducing apparatus for recording data such as video and audio on a recording medium such as a video tape.

[0002]

2. Description of the Related Art As a recording / reproducing apparatus for a recording medium such as a magnetic tape, for example, in a video tape recorder, the reproduction of the magnetic tape is prohibited on the apparatus side by prohibiting the apparatus operation itself which is held in the operation specification of each apparatus maker. Although there has been a function that can be set to, the reproduction prohibition cannot be set on the recording medium itself. Further, regarding whether to prohibit or permit recording on the magnetic tape, the prohibition or permission of recording is set depending on whether or not the recording prohibition chip provided on the recording medium is cut off. It did not exist.

Therefore, in the conventional apparatus, it is not possible to set the reproduction prohibition for each recording medium. Therefore, for example, whether or not to reproduce a magnetic tape whose viewing age is determined by a law typified by commercial video tapes for adults is determined. It was up to the user to make the reproduction. Regarding record prohibition,
If the recording prohibition chip of the magnetic tape is cut off, the entire magnetic tape is prohibited from being recorded. Therefore, the user had to know all the recorded contents of the magnetic tape in advance.

[0004]

When the reproduction of the magnetic tape is prohibited on the side of the apparatus as in the conventional apparatus described above, a dedicated IC or the like having a circuit for setting the operation inhibition is required, which is expensive. Moreover, the configuration and control become complicated. Further, it is impossible to set the reproduction inhibition for each recording medium or partially within the medium.

Regarding recording prohibition, there is no means other than recording prohibition of the entire magnetic tape by cutting off the recording prohibition chip of the magnetic tape. When prohibiting recording, the user grasps all the recorded contents of the magnetic tape. I had to keep it. Further, it is impossible to flexibly set the recording prohibition such as partially prohibiting the recording so that the other portion can be used or changing the recording prohibition portion, so that the entire magnetic tape cannot be effectively used.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a medium recording / reproducing apparatus capable of flexibly setting at least one of recording and reproducing prohibition or permission for each recording medium such as a magnetic tape. To do.

[0007]

A medium recording / reproducing apparatus according to the present invention firstly creates medium management data including medium protection data for setting prohibition or permission of at least one of recording and reproduction on a recording medium. Medium management data creating means, medium management data recording means for recording the medium management data in the control area of the recording medium when the recording medium is recordable, the recording medium or its own device And an operation control means for controlling prohibition or permission of at least one of recording and reproduction based on the medium protection data recorded in (1).

Secondly, the medium management data includes a user ID for identifying a user who records or reproduces on the recording medium, and an operation for prohibiting the recording or reproducing operation on the recording medium. It includes prohibited data. For example, when a magnetic tape video tape is used as the recording medium, recording prohibition data, reproduction prohibition data, or the like is set in the medium management data as the operation prohibition data.

Thirdly, the control data is data for controlling the transfer of the recording medium, and is used for searching for recording data when recording or reproducing on the recording medium. It is assumed that a search means is included which includes data and searches the record data by the search data. For example, as the search data, in the case of a video tape or the like, date data indicating the date and time when the video data was recorded is used as the record data.

Fourthly, the control data is data based on the VISS / VASS standard for controlling the transfer of a magnetic tape for recording a video signal used as the recording medium, and is recorded on the magnetic tape. Alternatively, the date and time data for searching the video data at the time of reproduction is included.

Fifthly, the search means detects the search data in the control data, and then detects the medium management data recorded together with the search data. For example, when the VISS / VASS data on the magnetic tape is used as the control data, the VISS data and the date / time data in the VASS data are searched as the search data, and the recording prohibition data or the reproduction prohibition data recorded together with the date / time data is used as a medium. Search management data.

Sixth, the medium management data recording means records at least a part of the medium management data in its own device. For example, in the case where the recording medium is a recordable recording / reproducing medium, the medium management data is recorded in both the control area of the recording medium and the memory of the device itself, and the recording medium is a reproducing only medium. Records the medium management data in its own memory or the like.

Seventh, a medium discriminating means for discriminating whether the recording medium is a recordable recording / reproducing medium or a reproducing medium capable of reproducing only is provided, and the recording is carried out based on the discrimination result of the medium discriminating means. When the medium is a reproducing medium, the medium management data recording unit records medium protection data relating to prohibition of the reproduction operation as the medium management data in its own device, and the operation control unit reproduces the medium in accordance with the medium protection data. The prohibition or permission of is controlled. For example, as the medium discriminating means, one which discriminates the medium type depending on the presence or absence of a recording prohibition chip of the video tape is used.

Eighthly, a data input means for inputting the medium management data is provided, and the medium management data recording means uses the user ID recorded in the recording medium or its own device and the data input means. User I entered
When D matches, the modification of the medium protection data is permitted.

According to the present invention, the medium management data including the medium protection data is recorded in the control data relating to the transfer control of the recording medium, and the recording operation and the reproducing operation are prohibited based on the medium protection data, whereby the magnetic tape is recorded. It is possible to flexibly set the prohibition or permission of at least one of recording and reproduction for each recording medium such as, and perform the operation control.
Also, by recording the medium protection data in the control data corresponding to the record data, it is possible to set the reproduction prohibition or the record prohibition for each recording medium or each record data. For example, by managing the medium ID in the medium management data, it is possible to individually judge the recording medium and execute the reproduction inhibition or the recording inhibition. Operation control and setting management relating to prohibition of recording or reproduction on the recording medium can be realized without adding a special circuit or device. In particular, by adopting VISS / VASS system control data in the VHS standard, consistency with the conventional model can be obtained.

Further, with respect to a reproducing medium such as a commercially available tape, it is possible to easily control the prohibition or permission of the reproducing operation of the recording medium by setting the medium management data and recording it in the device.

The user ID in the medium management data
By performing management by using, it is possible to set prohibition or permission of reproduction or recording to a specific user, or to permit only the set user to change the medium management data.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, video VHS
VI representing date and time data etc. defined as control data to be used for cueing recorded data in the system
A configuration example in which reproduction or recording of a magnetic tape can be prohibited by using SS data and VASS data will be shown.

First, VISS / VASS data will be described. For example, a surveillance device for crime prevention records an image captured from a surveillance camera on a recording medium of a recording / reproducing device such as a video tape recorder and stores the image. When the video data is reproduced, the state at that time and the occurrence time are specified. In such a case, in order to specify the crime occurrence time, at the same time as recording the video data, the time at that time is written in the control data area of the magnetic tape. As a method for writing time information and the like on a magnetic tape, the VHS standard defines an encoding method using a duty ratio of CTL. Generally, a video index search system code (VISS) and a video address search system code (VASS) are used. ) Is used. Data including date and time data based on the VISS / VASS standard is used as control data for controlling the transfer of the recording medium.

FIG. 1 is an explanatory diagram showing the structure of VISS / VASS data specified by VHS. As shown in FIG. 1A, the duty ratio of the recorded CTL pulse is “6”.
When it is 0:40, the logical value becomes "0", and "2"
At the time of 7.5: 72.5 ", the logical value is" 1 ". By this definition, so-called VISS and VASS.
Data format is defined. In the VISS data format, as shown in FIG. 1B, the first bit is “0”, the 61 ± 3 bits are “1”, and the subsequent 1 bit is “0”. It is a composition. V
As shown in FIG. 1 (c), the ASS data format has four headers and three BCDs between them (binary 10
And a data block. In this case, the BCD data block consists of 4 digits of 4 bits of data and 16 digits.
It is bit data, and in the figure, MSB indicates an upper bit and LSB indicates a lower bit. Also, each header is 1
It is composed of 11 bits consisting of a bit "0", a 9-bit "1" following this, and a further 1-bit "0".

In both VISS / VASS data formats, the first bit "0" seen in the data write direction forms the reference position. VISS
According to the above definition, is used as position marking information (index), and VASS is used as address information.

An example of the data structure when the VASS data is used as date and time data will be shown. FIG. 2 is an explanatory diagram showing a configuration example of date and time data by VISS / VASS data recorded on a magnetic tape.

The BCD data D1 which is a part of the VASS data is composed of 16 bits, and upper 8 bits indicate day data and lower 8 bits indicate time data. Of the 8 bits of day data, the upper 4 bits indicate the tens digit of the date, the lower 4 bits indicate the ones digit of the date, and the upper 2 bits of the upper 4 bits are always 0. Also, among the 8 bits of time data, the upper 4 bits indicate the tens digit of the time, and the lower 4 bits indicate the ones digit of the time. For example, at 12:00 on the 30th, the configuration is as shown in FIG.

When the date and time data is recorded at the time of image recording, the above-mentioned VISS data and VAS are recorded, for example, every hour.
The S data is used to record in the control data area of the magnetic tape. For security surveillance equipment, VISS
/ VASS data is used to mark date and time information at the time of video recording, and these positions are searched for at the time of reproduction. Therefore, if the VISS / VASS data is used, the position of the video data can be searched by the date and time data. Further, if the date and time information and the minute information are written on the magnetic tape as one VASS data, a detailed tape position search by the minute data is actually possible.

In the present embodiment, medium management data including tape protection data as medium protection data is defined in VISS / VASS data, this medium management data is recorded in the control data area of the magnetic tape, and reproduced for each magnetic tape. At least one of the operation and the recording operation can be prohibited.

(First Embodiment) FIG. 3 is a block diagram showing a main configuration of a control unit of a video tape recorder (hereinafter abbreviated as VTR) according to the first embodiment of the present invention.

The magnetic tape 104 is a recording medium for recording an image taken in from a camera (not shown) or an image input as a signal, and at the same time, a medium for recording VISS / VASS data. It should be noted that the magnetic tape 104 may be recorded with voice or the like taken from a microphone or the like. The head motor (MH) 101 whose rotation is controlled by the MH rotation control unit 106 is configured to include a cylinder (not shown) having a magnetic head for recording and reproducing image data. The MC rotation control unit 107 controls the rotation of the capstan motor (MC) 102 to control the magnetic tape 104.
Control the feed speed of. CTL head 10
In accordance with an instruction from the CTL amplifier mode control unit 113, 3 writes a control signal on one side of the magnetic tape 104 and changes the duty ratio of the control signal to create and write VISS / VASS data, and also records. The read control signal and VISS / VASS data are read.

MH rotation control section 106, MC rotation control section 1
07 and the CTL amplifier mode control unit 113, according to the instruction input signal from the search key input control unit 128, the VTR.
It is controlled by the mode control unit 127. Timer control unit 1
Reference numeral 08 has a clock and a 00-minute detection unit that detects time 00 minutes, and also has a recording start detection unit 115 and a write key input control unit 116. Write key input control unit 11
Reference numeral 6 receives a key input related to data writing by a user's instruction operation using a predetermined switch of the VTR main body or a remote controller, and outputs an instruction input signal to the write data creation unit 109.

The write data creation unit 109 has a date / time write data creation unit 129 for creating date / time data for writing, and also has a recording inhibition data creation unit 117 and a playback inhibition data creation unit 118. It The write data creation unit 109 outputs and displays a predetermined medium management data setting screen on a monitor or the like, and based on key input by a user's instruction operation, operation prohibition data (recording prohibition data and reproduction) as tape protection data. Create at least one of the prohibited data). Further, the recording / playback selection unit 110 selects whether the control data to be recorded is the recording inhibition data or the reproduction inhibition data.

The VISS data creation unit 111 creates VISS data for detecting control data and inputs it to the VASS data creation unit 112. VASS data creation unit 112
Has a header creating unit 119, a write header number counting unit (not shown), and a data creating unit 120,
Based on the date / time data, recording prohibition data or reproduction prohibition data, and VISS data, VA is used as control data to be written on the magnetic tape 104 by the CTL head 103.
Create SS data. Write CTL duty control unit 1
14 is a VA created by the VASS data creation unit 112.
The duty ratio of the control signal is changed based on the SS data, and the control data write signal is output to the CTL amplifier mode control unit 113.

The search key input control unit 128 receives a search-related key input by a user's instruction operation using a predetermined switch of the VTR main unit or a remote controller, and outputs an instruction input signal to the medium management data input control unit 121 and VTR mode control. It is output to the unit 127. The VTR mode control unit 127 operates in the VTR operation mode (recording,
(Playback, etc.) is set to perform operation control such as recording and playback. The medium management data input control unit 121 outputs a control signal for writing or searching control data based on the instruction input signal from the search key input control unit 128 and the comparison result signal from the data comparison unit 124. And output to the search data creation unit 122. Search data creation unit 122
Has a date / time write data creation unit 130 for creating date / time data for search, and creates search data such as date / time data.

The CTL amplifier mode control unit 113 amplifies the control data write signal from the write CTL duty control unit 114, and also amplifies the control data read signal including the VISS / VASS data read by the CTL head 103. To do. Read CTL duty detector 12
6 is VISS by detecting the duty ratio of the control data.
/ VASS data is detected, and the VASS data detection unit 12
Output to 5.

The VASS data detection unit 125 has a header detection unit 131 and a data detection unit 132, analyzes the input VASS data to detect the header unit and the data unit, and as date and time data, as tape protection data. The medium management data including the recording prohibition data and reproduction prohibition data, the tape ID, the user ID, and the like are reproduced. The data comparison unit 124 compares the search date / time data with the reproduced date / time data, and outputs a determination result of whether they match to the medium management data input control unit 121 and the VTR mode control unit 127.

The medium management data creating means and the medium management data recording means described in the claims are the write key input control section 116, the search key input control section 128, the medium management data input control section 121, and the VISS data creation section. 111, VA
It is realized by the SS data creation unit 112 and the like. Also,
The operation control means described in the claims is the VASS data detection unit 125, the data comparison unit 124, and the VTR mode control unit 12.
It is realized by 7. The search means described in the claims is realized by the search key input control unit 128, the medium management data input control unit 121, the search data creation unit 122, the VASS data detection unit 125, the data comparison unit 124, and the like. The data input means described in the claims is realized by the write key input control unit 116, the search key input control unit 128, the medium management data input control unit 121, and the like.

Here, an example of the structure of the VISS data and VASS data in this embodiment is shown in FIGS.

As shown in FIG. 4, the VASS data has tape protection data for protecting the tape which prohibits recording or reproduction of the magnetic tape together with the tape ID and the user ID in the data block following the header. In the figure, the data No. of (A) and (B). D00-D1
5 corresponds to the data name and setting contents. That is, as the tape protection data, a tape ID for tape identification, a user ID for user identification, a tape lock recognition bit, a reproduction lock setting bit, and a recording lock setting bit are provided.

Then, as shown in FIG. 5, VISS / VA is provided in such a manner that VASS data of date / time data and VASS data of tape protection data are provided after the VISS data.
SS system control data is configured. This VISS / V
The ASS data is recorded in a predetermined area such as a control signal track of the magnetic tape 104.

Next, the operation of the first embodiment configured as described above will be described. The first embodiment is configured to perform a prohibition control of a reproducing operation and a recording operation for each magnetic tape, which is sold as a raw tape or the like and is capable of recording and reproducing (hereinafter also referred to as a personal tape). And operation.

FIG. 6 is a flow chart showing the procedure of the tape protection operation in the first embodiment. First, when a user inserts a magnetic tape, which is a recording medium, into a VTR to perform recording or reproduction, the user determines whether or not to enable the tape protection function, and switches the tape protection function on and off. Set by operating. In this tape protection operation (tape lock operation), the VTR determines whether the tape protection function (tape lock function) set by the user is valid (ON) when the insertion of the magnetic tape is detected (step S201). ). If the tape protection function is in use mode, the magnetic tape is rewound (step S202) in order to confirm whether the tape lock function setting based on the tape protection data is already set. Rewinding is continued until the beginning of is detected (step S203).

When the rewinding to the beginning of the tape is completed, VASS data is searched (step S20).
4). FIG. 7 is a diagram illustrating a VASS data search operation. At this time, the magnetic tape is fast-forwarded from the beginning of the tape in the fast-forward (FF) mode to scan the VISS data. When the VISS data is detected, the magnetic tape is overrun until the position of the following VASS data is passed and the fast-forward is stopped. Next, the VASS data is read by rewinding to the position of the previous VISS data in the rewind (REW) mode and scanning the entire area of the VASS data.
Then, it is judged whether or not the search for the VASS data is completed (step S205).
The SS data search is started, and fast-forwarding is performed until the next VISS data is detected. By this procedure, the VASS data recorded on the magnetic tape is searched sequentially,
The VASS data is acquired until the search for the VASS data is completed (for example, to the end of the tape). As shown in FIGS. 4 and 5, the VASS data according to the present embodiment includes the date and time data and the tape protection data including the tape ID and the user ID, the recording prohibition data, the reproduction prohibition data, and the like.

Next, it is judged whether or not the tape ID and the user ID are present in the tape protection data of the obtained VASS data (step S206). If both the tape ID and the user ID are present, the tape lock function confirmation screen is activated and displayed on a monitor or the like to prompt the user to input the user ID (step S207). The user performs an input operation using a predetermined switch on the VTR main unit or the remote controller. Further, the setting contents of the tape protection data can be confirmed on the tape lock function confirmation screen. FIG. 8 is an explanatory diagram showing an example of a display screen used as a tape lock function confirmation screen or a tape lock function setting screen and the setting contents of the tape protection data. In this example, ON / OFF of use of the tape lock function, tape ID, user ID, and individual tape lock setting (recording prohibition ON / OFF, reproduction prohibition ON / OFF) are provided. When the input of the user ID is completed, the display of the tape lock function confirmation screen on the monitor is turned off.

Then, the user I input by the user
It is determined whether D matches the user ID recorded on the magnetic tape (step S208), and it is authenticated whether or not the user is the user who set the acquired tape protection data. If the user IDs match, all the locks of the tape protection data are released (OFF) to enable the VTR playback operation and recording operation (step S210), and the tape protection operation is ended. In this case, the users whose IDs match can change the tape protection data other than the tape ID.

Considering the case where the user of the VTR forgets the user ID, the tape lock function can be released by the matching of the master IDs even when the user IDs do not match. In this case, the user is prompted to input the master ID, and it is determined whether the master ID recorded in the non-volatile memory of the device matches the master ID input by the user (step S209). If the IDs match, unlock the tape protection data and VT
Enables R playback and recording operations. This Master I
D may be described in the instruction manual of the device.

If the user ID and the master ID do not match, the tape lock function according to the setting of the recorded tape protection data is enabled (ON), and the VTR reproducing operation or recording operation is prohibited. Yes (step S21
1). Then, the tape protection operation ends.

If the user ID or tape ID does not exist in step S206, the tape lock function setting shown in FIG. 9 is performed and the tape protection function is set (step S212). Then, according to the setting of the tape protection function, the VTR reproducing operation or recording operation is prohibited (step S211).

FIG. 9 is a flow chart showing the procedure of the tape lock function setting operation. An example of setting the tape protection function will be described with reference to this figure. First, a tape lock function setting screen similar to the tape lock function confirmation screen shown in FIG. 8 is activated and displayed on a monitor or the like, and the user ID
Also, input of tape protection data such as recording prohibition data and reproduction prohibition data is prompted (step S301). On the tape lock function setting screen, the user uses the predetermined switch of the VTR main unit or the remote controller to input, confirm and correct the tape protection data. For example, with respect to the magnetic tape indicated by the tape ID, it is set whether or not the tape lock function is used, and whether recording is prohibited and / or reproduction is prohibited.

Then, the tape rewinding operation is started (step S302), and it is judged whether or not the setting of the tape lock function is completed while rewinding the magnetic tape (step S303). When the setting input of the tape lock function by the user is completed, the setting content of the tape lock function, that is, the tape protection data is stored in the nonvolatile memory of the apparatus or the like (step S304). Also, the display of the tape lock function setting screen on the monitor is turned off in response to the user's ending operation. When the rewinding is not completed, the tape rewinding operation is continued (step S305), it is determined whether the beginning of the tape is detected (step S306), and the rewinding is performed to the beginning of the tape.

When rewinding to the beginning of the tape is completed,
The setting contents of the tape lock function, that is, the tape protection data is recorded on the magnetic tape in accordance with the VISS / VASS data format shown in FIGS.
It is registered as ASS data (step S307). The content of the VASS data at the beginning of the tape is the initial setting of the tape lock function of the magnetic tape.

As described above, in the first embodiment, the VASS data including the tape protection data is recorded on the control signal track of the magnetic tape or the like, so that the reproduction operation and the recording operation are prohibited or canceled depending on the setting of the user for each medium. Can be controlled.

Further, as a modification of the first embodiment, based on the recording start detection result by the recording start detection unit 115, V
At the start of TR recording, the VAS containing tape protection data in the recording start portion of the magnetic tape as in the first embodiment.
It is also possible to write S data.

As a result, in addition to the protection against the recording / reproducing operation for each medium by the tape protection data recorded at the head portion of the magnetic tape, the video data recorded in the magnetic tape by the tape protection data at each recording start portion. The playback operation or the recording operation can be prohibited and protected for each time.

(Second Embodiment) FIG. 10 is a block diagram showing a main configuration of a control unit of a VTR according to a second embodiment of the present invention.

The second embodiment is a commercially available tape determination for determining whether the magnetic tape inserted in the VTR is a reproducing magnetic tape (hereinafter also referred to as a commercially available tape) on which a movie or the like is recorded and is commercially available. This is an example in which the section 921 is provided and a tape protection operation such as a reproduction operation prohibition can be performed even with a commercially available tape. The medium discriminating unit described in the claims is realized by the commercially available tape discriminating unit 921. The commercially available tape determination unit 921 determines whether or not there is a recording prohibited chip provided in the tape case.
1, and a tape insertion determination unit 93 that detects the insertion of the tape.
It is configured with 2. Note that other configurations are shown in FIG.
The same components as those of the first embodiment shown in FIG.

Next, the operation of the second embodiment configured as described above will be described. The second embodiment shows a configuration and an operation in which a commercial tape and a personal tape are discriminated, and reproduction control is prohibited in the case of a commercial tape, and reproduction control and recording operation are prohibited in the case of a personal tape.

FIG. 11 is a flow chart showing the procedure of the commercially available tape discriminating process in the second embodiment. First, when a user inserts a magnetic tape, which is a recording medium, into a VTR to perform recording or reproduction, the user determines whether or not to enable the tape protection function, and switches the tape protection function on and off. Set by operating. In the VTR, when the insertion of the magnetic tape is detected, it is determined whether or not there is a recording inhibition chip provided in the tape case (step S401).
This determines whether the magnetic tape is recordable.If there is no recording-prohibited chip and the recording is prohibited, the recording-prohibited chip of a commercially available tape for playback or a recorded personal tape is broken. It is presumed that it has been removed.

In step S401, if the recording prohibition chip is present and recording is possible, it is determined that the tape is a personal tape, and the same tape protection operation as that of the first embodiment shown in FIG. 6 is set as the personal tape protection operation. Execute (step S402). In this personal tape protection operation, when the user IDs match, the tape protection function can be set or changed, and the reproduction operation and the recording operation can be prohibited and protected for each tape.

FIG. 12 is an explanatory diagram showing the set contents of the tape protection data in the tape lock function setting operation of the second embodiment. Similar to the first embodiment shown in FIG. 8, ON / OFF of use of the tape lock function, tape ID, user ID, personal tape lock setting (recording prohibition ON / OF
F, playback prohibition ON / OFF) is provided. These tape protection data are recorded on both the VTR body and the magnetic tape. The tape ID and personal tape lock setting are set and recorded only for the personal tape.

In addition to the above, a commercially available tape lock setting (reproduction inhibition ON / OFF) and a commercially available tape recognition setting (CM detection count, CM detection time) are provided. Since commercially available tapes are reproduction tapes that cannot be written, these tape protection data are recorded only on the VTR main body.
The setting data of the commercial tape recognition setting is used in the determination processing of the commercial tape described later, and the commercial (C (Commercial (C
M)) is detected to determine whether the tape is a commercially available tape.

The tape lock function setting screen or the tape lock function confirmation screen used for inputting or confirming the setting is ON / OF for using the tape lock function in the case of a personal tape.
F, tape ID, user ID, personal tape lock setting is displayed, and if the tape is commercially available, the tape lock function is used.
N / OFF, user ID, commercially available tape lock setting), and commercially available tape recognition setting may be displayed. In the case of any tape, the example of the tape protection data shown in FIG. 12 may be displayed on a monitor or the like as a tape lock function setting screen or a tape lock function confirmation screen.

Next, in the above-mentioned personal tape protection operation, it is judged whether the user ID and the tape ID match (step S403). If they match, the tape protection function is effective for the user of the magnetic tape and VTR. Then, the state becomes usable (step S404). Then, it is determined that the inserted magnetic tape is a personal tape, and operations such as recording and reproducing of the VTR relating to the magnetic tape are controlled so as to be treated as a personal tape (step S).
405). If the user ID and the tape ID do not match in step S403, the tape protection function valid processing in step S404 is skipped. When it is determined that the tape is a personal tape, the tape protection against the reproducing operation and the recording operation can be realized for each medium or each video data in the medium by the VISS / VASS data including the tape protection data recorded on the magnetic tape.

If there is no recording-prohibited chip in step S401, it is determined in step S406 and subsequent steps whether the tape is a commercially available tape. In this case, first, the tape lock function setting screen is activated to perform the tape lock function setting operation for a commercially available tape (step S406). Here, the number of CM detections and CM detection time for the commercial tape determination and the protection function for prohibiting the reproduction operation for the commercial tape are set. Note that these settings may be preset by the user and recorded in a non-volatile memory or the like in the apparatus. After that, CM detection frequency: 3 times, CM detection time: 1
The operation when set to 5 minutes will be described.

Next, in steps S407 to S412, VI
The SS data is detected to detect the commercial recorded on the magnetic tape. In the commercial, VISS data is recorded for each image data, and the presence or absence of the commercial can be detected by the VISS data. First, the VISS search (VISS data detection) execution counter is initialized (step S407), the VISS search is started (step S408), and the tape running time is counted (step S409). Then, it is determined whether or not the tape running time of 15 minutes or more, which is the CM detection time, has elapsed from the beginning of the tape (step S410), and if 15 minutes or more has elapsed, as in the case where the above-described recording inhibition chip exists, step S402. The process shifts to the subsequent personal tape processing. In this way, when VISS data is not detected for the predetermined time, it can be determined that the commercial tape is a personal tape with no commercial, and the recording-prohibited chip is removed, and recording cannot be performed.

If the tape running time has not yet reached 15 minutes after the VISS search is started, it is judged whether the VISS search is finished (step S411), and the VISS search is continued.
It is determined whether the search has been executed three times or more, which is the number of times of CM detection (step S412). That is, the processes of steps S409 to S412 are repeated until the VISS data is detected three times from the beginning of the tape to the position where the tape running time is 15 minutes.

When the VISS data is detected three times, that is, three or more commercials are detected from the beginning of the tape to the position where the tape running time is 15 minutes, it is determined that the inserted magnetic tape is a commercially available tape, and the commercially available tape is used. The operation such as the reproduction of the VTR relating to the magnetic tape is controlled so as to be treated as (step S413). When it is confirmed that the tape is a commercially available tape, the playback operation prohibition is enabled / disabled by the tape protection data of the commercially available tape lock function setting recorded in the VTR device.
The release can be controlled, and the tape protection for the playback operation can be realized. It is also possible to individually discriminate commercially available tapes based on the number of commercials, total time, etc. based on the CM detection result, and it is also possible to execute tape protection for each medium.

As described above, in the second embodiment, it is possible to control the prohibition or cancellation of the reproducing operation even for the commercially available tape for reproduction, as in the case of the personal tape, and it is possible to realize the protection concerning the reproduction of the tape.

The tape protection operation in the above-described embodiment of the present invention is summarized as follows.

First, the following judgment and operation are performed when the magnetic tape as the recording medium is inserted. (1) Check if the tape protection data exists on the magnetic tape.
Read the VASS data and judge. Here, the read VASS data is stored in the non-volatile memory in the device. If there is no tape protection data, the data representing the non-tape data is stored. (2) Determine whether the magnetic tape is writable. When the magnetic recording / reproducing apparatus is a VTR, it is determined whether or not the magnetic tape has a recording inhibition chip.

The following operation is performed according to the above determination result. (A) When it is determined that there is tape protection data and it is writable, the tape lock function setting screen is displayed on the monitor by an on-screen display or the like, and the user of the magnetic reproducing apparatus is prompted to input the user ID. (A-1) If the input user ID matches the user ID written on the magnetic tape, the tape protected data other than the tape ID can be changed. When the user wants to finish changing the setting, the on-screen display of the tape lock function setting screen is stopped by operating the remote control etc.
For the subsequent recording and reproducing operations, reproduction or recording is prohibited according to the tape protection setting (tape lock function setting) set by the user. (A-2) When the input user ID does not match the user ID written on the magnetic tape, the on-screen display of the tape lock function setting screen is stopped, and the subsequent recording operation and reproducing operation are performed. Prohibits reproduction or recording according to the already set tape protection setting, that is, according to the tape protection setting written on the magnetic tape.

(B) When it is judged that there is tape protection data and it is not writable, the tape lock function setting screen is displayed on the monitor by an on-screen display or the like, and the user of the magnetic reproducing apparatus is prompted to input the user ID. . In this case, since recording is not possible, this means prompting the user to confirm the tape protection setting for the commercially available tape. Here, only when the user IDs match, the tape protection setting for the commercially available tape can be changed, and when the user IDs do not match, the reproduction is prohibited according to the already set tape protection setting.

(C) When it is judged that there is no tape protection data and it is writable, the same operation as (A-1) is performed. However, user ID
Since there is no possibility of coincidence, the user ID will be confirmed by the first input.

(D) When it is judged that there is no tape protection data and it is not writable, the same operation as (B) is performed. However, since the user IDs cannot coincide with each other, the user ID is fixed by the first input.

As described above, according to this embodiment, the prohibition or effectiveness of the reproducing operation or the recording operation can be controlled for each recording medium such as a magnetic tape, and a special standard and a special circuit therefor are provided. Unnecessary and VAS
It can be configured without making a large change to the circuit (software) for recording / detecting S data. Therefore, while maintaining the consistency with the conventional device in the position search function of the recording data on the recording medium, it is possible to read the data regarding the operation prohibition of the recording medium together with the data position search to determine and control the prohibition setting. Therefore, it is possible to construct a system for prohibiting the reproducing operation and the recording operation at a very low cost and easily.

[0073]

As described above, according to the present invention, it is possible to provide a medium recording / reproducing apparatus capable of flexibly setting prohibition or permission of at least one of recording and reproduction for each recording medium such as a magnetic tape. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the structure of VISS / VASS data that is specified by VHS.

FIG. 2 is an explanatory diagram showing a configuration example of date and time data based on VISS / VASS data recorded on a magnetic tape.

FIG. 3 is a block diagram showing a main configuration of a control unit of the video tape recorder according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a configuration example of VASS data to which tape protection data is added in the present embodiment.

FIG. 5 is VISS data and VAS in this embodiment.
It is explanatory drawing which shows the structural example of S data.

FIG. 6 is a flowchart showing a procedure of a tape protection operation according to the first embodiment.

FIG. 7 is an operation explanatory view showing a search operation of VASS data.

FIG. 8 is an explanatory diagram showing setting contents of tape protection data in the tape lock function of the first embodiment.

FIG. 9 is a flowchart showing a procedure of a tape lock function setting operation.

FIG. 10 is a block diagram showing a main configuration of a control unit of a video tape recorder according to a second embodiment of the present invention.

FIG. 11 is a flowchart showing a procedure of a commercially available tape discriminating process in the second embodiment.

FIG. 12 is an explanatory diagram showing setting contents of tape protection data in the tape lock function of the second embodiment.

[Explanation of symbols]

103 CTL head 104 magnetic tape 108 Timer control unit 109 Write data creation section 111 VISS data creation section 112 VASS data creation section 113 CTL amplifier mode control unit 114 write CTL duty control section 115 Recording start detector 116 Write Key Input Control Unit 117 Recording prohibited data creation section 118 Reproduction prohibited data creation section 121 Media Management Data Input Control Unit 122 Search data creation unit 124 Data comparison unit 125 VASS data detector 126 Read CTL duty detector 127 VTR mode controller 128 Search key input controller 129,130 Date and time data creation unit 921 Commercial tape determination unit 931 Recording prohibited chip determination unit 932 Tape insertion judgment unit

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Claims (8)

[Claims] 1. A medium management data creating unit for creating medium management data including medium protection data for setting at least one of prohibition or permission of recording and reproduction on a recording medium, and when the recording medium is recordable, A medium management data recording unit for recording the medium management data in the control area of the recording medium by including the medium management data in the control data, and prohibition of at least one of recording and reproduction based on the medium protection data recorded in the recording medium or its own device. Or, a medium recording / reproducing apparatus comprising: an operation control unit for controlling permission. 2. The medium management data includes a user ID for identifying a user who records or reproduces on the recording medium, and operation prohibition data which prohibits a recording operation or a reproducing operation on the recording medium. The medium recording / reproducing apparatus according to claim 1, comprising: 3. The control data is data for controlling the transfer of the recording medium, and includes search data for searching the recorded data when recording or reproducing on the recording medium. 2. The medium recording / reproducing apparatus according to claim 1, further comprising a search means for searching the record data by the search data. 4. The control data is data based on the VISS / VASS standard for controlling transfer of a magnetic tape for recording a video signal used as the recording medium, and recording or reproducing is performed on the magnetic tape. The medium recording / reproducing apparatus according to claim 1, wherein the medium recording / reproducing apparatus includes date / time data for retrieving video data. 5. The medium recording apparatus according to claim 3, wherein the search unit detects the search data in the control data and then detects the medium management data recorded together with the search data. Playback device. 6. The medium recording / reproducing apparatus according to claim 1, wherein the medium management data recording unit records at least a part of the medium management data in its own device. 7. A medium discriminating means for discriminating whether the recording medium is a recordable recording / reproducing medium or a reproducing medium capable of reproducing only, and the recording medium is for reproducing based on the discrimination result of the medium discriminating means. In the case of a medium, the medium management data recording means records the medium protection data relating to the prohibition of the reproduction operation as the medium management data in its own device, and the operation control means prohibits or permits the reproduction operation according to the medium protection data. The medium recording / reproducing apparatus according to claim 1, wherein 8. A data input means for inputting the medium management data, wherein the medium management data recording means uses the user ID recorded in the recording medium or its own device and the use input by the data input means. The medium recording / reproducing apparatus according to claim 2, wherein the medium protection data is permitted to be changed when the person IDs match.