JP2005051487A - Surreptitious photographing act prevention system of video camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surreptitious photographing act prevention system of a video camera which prevents surreptitious photographing in a theater, by using an RF tag. <P>SOLUTION: In a theater system, data recorded in an active RF tag of a camcorder 10 passing through an entrance gate 17a in a theater 12 are read by an RF tag reader 11a for storing into a tag information management server 14. A tag information database server 13 stores the newest information on the RF tag circulating in the market. A photographing act in the theater 12 is decided, based on data read by an RF tag reader 11b when leaving an exit gate 17b and the previously stored data. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a system for preventing voyeurism of a video camera in a theater showing a program such as a movie.

  Conventionally, there has been a problem in that a so-called pirate board is produced by taking a picture with a camcorder in a theater. On the other hand, by mixing a copy protection pattern in the movie movie to be screened using signal processing technology, aliasing noise is generated in the shot video when shooting with a digital recording device such as a camcorder, A system for generating unpleasant video has been proposed (see, for example, Patent Document 1).

In addition to the projector that projects the regular screening program, a projector that projects infrared rays is provided separately, and the infrared rays are simultaneously projected onto the screen during movie screening, so that the recorded video can be recorded with a digital recording device such as a camcorder. There has been proposed a system that generates aliasing noise and generates an unpleasant video (see, for example, Patent Document 2).
JP 2002-314938 A US Pat. No. 6,018,374

  By the way, in these prior art methods, the image projected on the screen is processed before or after the projection. In the implementation, a digital signal processing device or an infrared projection projector is used as a theater system. However, there is a problem that a very large system change is required.

  The present invention has been made in view of the above points, and voyeurism in theaters can be performed using wireless tags that have been rapidly spreading in recent years in business areas such as inventory management in distribution systems and shoplifting prevention systems in retail stores. An object of the present invention is to provide a video camera anti-voyeurism prevention system that can be prevented.

In order to solve the above-mentioned problems, the present invention comprises the following means 1) to 2).
That is,
1) A system for preventing voyeurism of a video camera in a specific theater area,
A video camera with a built-in active wireless tag;
First active wireless tag reading means for reading information of the active wireless tag at an entrance to enter the theater area;
A second active type wireless tag reading means for reading information on the active type wireless tag at an exit exit from the theater area;
Active RFID tag information managing means for managing information obtained from the first active RFID tag reading means and the second active RFID tag reading means;
When the information obtained from the first active RFID tag reading means and the second active RFID tag reading means in the active RFID tag information management means is not the same, the video camera performs a recording operation in the theater area. Discrimination means for discriminating what has been done;
A voyeurism prevention system for a video camera, comprising:

2) A system that prevents video camera voyeurism in a specific theater area,
A video camera with a built-in passive wireless tag,
Passive wireless tag reading means for reading information of the passive wireless tag in the theater area;
Passive-type RFID tag information managing means for managing information obtained from the passive-type RFID tag reading means;
Photographing operation presence / absence detecting means for detecting presence / absence of photographing operation of the video camera;
A discriminating unit for discriminating that the video camera has performed a recording operation in the theater area when the information of the passive RFID tag information managing unit and the shooting operation presence / absence detecting unit detect presence;
A voyeurism prevention system for a video camera, comprising:

  In the video camera anti-voyeurism prevention system of the present invention, it is possible to detect the presence of a video camera in a theater, and an active wireless tag (hereinafter referred to as RF tag) is used as evidence of the recording. In other words, by using a passive RF tag, when a shooting operation is performed by a camcorder in a theater, it is possible to detect a shooting operation and a shooting position, so that a reliable voyeurism prevention system can be constructed. effective.

  The theater can be realized by adding a simple system without significantly changing the existing theater system. In a video camera, the RF tag is very small and no power supply from the outside is required, so there is no power consumption disadvantage due to installation in the video camera, and the RF tag is inexpensive. Therefore, there is no price demerit due to installation in mass-produced video cameras. Therefore, there is an effect that it is possible to provide a low-cost voyeurism prevention system with a simple system.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the invention of an automatic focusing apparatus of the present invention will be described with reference to preferred embodiments.

  The RF tag applied to each embodiment is defined as an active tag and a passive tag as follows according to the operation of the RF tag.

  The active tag is not only capable of reading information stored in the RF tag by an operation from the outside of the RF tag, but also capable of newly storing information in the RF tag. . For example, information such as usage time, usage mode such as recording / playback, and cumulative usage time is written from the video camera and stored in the memory of the RF tag.

  On the other hand, the passive tag is an RF tag that can only read information stored in the RF tag by an operation from the outside of the RF tag.

  These active tags and passive tags are tags in which a storage medium using a non-contact IC chip and an antenna are embedded, and have a configuration based on a system defined by ISO-14493 and ISO-15893. Explained. In the implementation, this method is not particularly limited.

  First, an embodiment in which an active tag is used as a device identification tag will be described. FIG. 1 shows a schematic configuration diagram of a theater-side system using an active tag, and FIG. 2 shows a schematic configuration diagram of a camcorder-side system.

  As shown in FIG. 1, the theater 12 side system includes RF tag readers 11a and 11b for reading data recorded on active RF tags passing through the gates at the entrance gate 17a and the exit gate 17b of the theater, respectively. Yes. Further, a tag information management server 14 for storing information read by these RF tag readers 11a and 11b is provided outside the theater 12, and is connected to the RF tag readers 11a and 11b by wire or wirelessly. The tag information database server 13 is a database server that stores the latest information about RF tags distributed in the market. The tag information management server 14 is connected to the tag information database server 13 by wire or wirelessly. The tag information management server 14 is read by the RF tag readers 11 a and 11 b in the theater 12 and stored in the tag information management server 14. In order to determine tag-specific information such as a manufacturer, data on the tag information database server 13 is referred to.

  As shown in FIG. 2, the camcorder 10 side system includes an active RF tag 10a inside the camcorder 10, and the active RF tag 10a is connected to a shooting operation control unit 10b of the camcorder 10, and information relating to shooting at the time of shooting operation is provided. Is written from the imaging operation control unit 10b to the active RF tag 10a.

  The active RF tag 10a includes information unique to the camcorder such as a device ID and an RF tag ID when the camcorder 10 is shipped. Shooting information newly stored by shooting information includes information such as shooting start time and shooting end time, and when a movie that is being played by the camcorder is shot, a frame rate detection circuit (not shown) is used to show the movie. It is assumed that a certain 48p or 96p is detected and information indicating that a movie being shown is being filmed is included.

  A movie film has 24 frames per second, but when it is usually screened in a theater, the viewer feels flicker at 24 frames, so that one frame is further divided into four, and the first division is projected. Non-projection, the third division is projected, and the fourth division is film feed, so that it is in a so-called 48p state, so that it is detected that it is 48p or 96p.

  Next, the operation procedure of the theater system will be described with reference to FIG. When the system operation is started, the RF tag reader 11a installed at the entrance gate 17a monitors the passage of the RF tag built-in camcorder 10 (S30). When the RF tag 10a that passes through the entrance gate 17a and enters the theater 12 is detected (Yes in S31), the information read from the RF tag 10a is notified to the tag information management server 14, and this information is stored in the server (S32). To do. The RF tag reader 11b installed at the exit gate 17b monitors the passage of the RF tag built-in camcorder 10 (S33). When the RF tag 10a exiting the theater 12 through the exit gate 17b is detected (Yes in S34), the information read from the RF tag 10a is notified to the tag information management server 14, and this information is stored in the server (S35). ). When the tag information management server 14 receives the tag information notification from the exit gate 17b, the tag information management server 14 detects the tag ID from the tag information and refers to the tag information (S36) at the time of entry already stored in the server. The tag information at the time of exit is detected in the tag information at the time of entrance for the same tag ID from the tag information at the time of entrance (S37). If there is information newly photographed (Yes in S38), the photographing start time, the photographing end time, the frame rate setting, etc. are confirmed from the photographing information, and the photographing action for photographing the screening program is collated (S38).

  With reference to FIG. 4, an operation for writing photographing information to the RF tag when the camcorder 10 performs a photographing operation will be described. It is detected whether there is a photographing operation (S40). If there is a photographing operation (S40 Yes), the photographing operation control unit in the camcorder 10 records photographing information on the RF tag 10a (S41).

  Next, the operation of the RF tag 10a built in the camcorder 10 is shown in the flowchart.

  First, the operation in which the tag information reading operation is performed by the RF tag reader will be described with reference to FIG. It is detected whether or not there is a tag information reading operation from the RF tag reader (S50). When tag information is read from the RF tag reader (Yes in S50), the information stored in the RF tag is returned to the RF tag reader (S51).

  Next, with reference to FIG. 6, the shooting information writing operation from the camcorder operation control unit will be described. It is detected whether there is a photographing information writing operation from the photographing operation control unit (S60). If there is an operation for writing photographing information from the photographing operation control unit (S60 Yes), the photographing information is stored in the RF tag (S61).

  Next, a second embodiment in which a passive tag is used as a device identification tag will be described.

  A system using a passive tag is composed of a system on the theater side and a camcorder side in the same manner as a system using an active tag. FIG. 7 shows a schematic configuration diagram of the theater-side system when a passive tag is used, and FIG. 8 shows a schematic configuration diagram of the camcorder-side system.

  As shown in FIG. 7, the theater-side system using passive tags includes an RF tag reader 16a, a tag information management server 14, a tag information database server 13, and a photographing operation detection device 70. The RF tag reader 16a is installed in the passenger seat, and reads tag information stored in the passive RF tag when the camcorder 10 incorporating the passive RF tag exists in the vicinity. The RF tag reader 16a is connected to the tag information management server 14 installed outside the theater 12 by wire or wirelessly, and notifies the tag information management server 14 of the camcorder detection information in the audience seat together with the read tag information. The tag information database server 13 is a database server that stores the latest information about RF tags distributed in the market. The tag information management server 14 that has received the detection information and the tag information receives the tag information database server 13. The tag-specific information such as the model of the camcorder 10 and the manufacturer is determined from the tag information read by the RF tag reader 16a in the theater.

  In this system, there may be a plurality of RF tag readers installed in the passenger seat. In this case, detection information is sent from the plurality of RF tag readers to the tag information management server. Based on the detection information from the plurality of RF tag readers, the tag information management server may specify the location of the camcorder by calculation.

  When a passive RF tag is used, the RF tag reader detects the presence of a camcorder but cannot identify the shooting action. Therefore, the shooting action is specified by using the shooting operation detection device. The photographing operation detection device detects the photographing operation of the camcorder, for example, by detecting unnecessary radiation leaking from the camcorder during the photographing operation of the camcorder.

  Next, as shown in FIG. 8, the camcorder side system includes a passive RF tag 10 c in the camcorder 10. The passive RF tag 10c stores information unique to the camcorder 10, such as the device ID of the camcorder 10. The passive RF tag 10c is merely installed in the camcorder 10 and is not electrically connected to the internal components of the camcorder 10.

  Further, in order to detect the passive RF tag 10c, it is possible to take measures against a shielding action such as wrapping the periphery of the camcorder 10 with a conductor, or to read tag information from the outside even if the camcorder 10 is shielded. An RF tag is used. Alternatively, when it is difficult to detect the passive RF tag 10c by the RF tag reader due to the shield, the passive RF tag 10c is installed near the lens in the camcorder 10 by taking advantage of the characteristic of the camcorder 10 that the lens must be opened at the time of shooting. The inside may be configured to be always detectable.

  Next, the operation procedure of the theater system will be described with reference to FIG. The presence of the RF tag built-in camcorder is detected by the tag information reading operation by the RF tag reader installed in the passenger seat (S90). If an RF tag built-in camcorder is detected (S91 Yes), the tag information is notified to the tag information management server, and this information is stored in the server (S92). If a plurality of RF tag readers are installed in the passenger seat, the position of the camcorder with a built-in RF tag is calculated based on the tag information on the server sent from the plurality of RF tags, and the position is detected (S93). ). The photographing action of the camcorder is detected by the photographing operation detecting device (S94). When a shooting action is detected (S95 Yes), a shooting prevention measure is taken (S96).

  Next, the operation of the passive RF tag in the camcorder side system will be described with reference to FIG. It is detected whether or not there is a tag information reading operation from the RF tag reader (S101). If tag information is read from the RF tag reader (Yes in S101), the information stored in the RF tag is returned to the RF tag reader (S102).

  As a third embodiment, a modified example of a system using a passive RF tag will be described. The modification shown here is a system for switching on / off the operation state of a passive RF tag by an operation from a camcorder. Since this system has the characteristics of both a passive tag and an active tag, this system will be described below. Is expressed as an intermediate system.

  FIG. 11 shows a schematic configuration diagram of a theater-side system of the intermediate system, and FIG. 12 shows a schematic configuration diagram of a camcorder-side system.

  As shown in FIG. 11, the theater-side system includes an RF tag reader 16 a installed in the audience seat, a tag information management server 14 installed outside the theater 12, and a tag information database server 13. This is a configuration in which the photographing operation detection device is excluded from the theater side system using the passive RF tag according to the second embodiment. The RF tag reader 16a in the passenger seat detects the presence of the RF tag built-in camcorder 10 present in the passenger seat, and notifies the tag information management server 14 together with the tag information read at the time of detection. The tag information management server 14 stores information transmitted from the RF tag reader 16a, and determines tag-specific information by referring to data in the tag information database server 13.

  Next, as shown in FIG. 12, the camcorder side system incorporates a passive RF tag 10c inside a normal camcorder 10 and is electrically connected to a camcorder imaging operation control unit 10b. By performing this electrical connection, the response operation of the passive RF tag 10c is electrically controlled through a photographing operation. The response operation of the passive RF tag 10c in the intermediate system will be described in detail below.

  The passive RF tag 10c in the intermediate system is switched on when the photographing operation is not being performed, and tag information is always returned when the tag information reading operation is performed from the RF tag reader 16a. It works like this. However, when the camcorder photographing operation is performed, the switch on / off state is intermittently repeated. Therefore, when the camcorder 10 is performing a photographing operation, even if a tag information reading operation is performed from the RF tag reader 16a, a response may or may not be returned depending on the switch-on / off state of the passive RF tag 10c. . By such an operation, it is possible to notify the RF tag reader 16a of the presence / absence of a photographing operation even in the passive RF tag 10c into which photographing operation information cannot be written. FIG. 13 shows an intermittent operation state of the passive RF tag. Such intermittent operation is realized by combining, for example, a counter circuit as shown in FIG. 14 and operating the counter circuit as shown in FIG.

  Next, the operation procedure of the theater system in the intermediate system will be described with reference to FIG. The presence detection operation of the RF tag built-in camcorder 10 is performed by the RF tag reader 16a installed in the passenger seat (S161). If the RF tag built-in camcorder 10 is detected in the passenger seat (S162 Yes), the tag information read from the passive RF tag 10c is notified to the tag information management server 14. The tag information management server 14 stores the information received from the RF tag reader 16 in the server (S163). The tag information management server 14 refers to the past reading information of the tag ID having the read RF tag information, and determines whether or not a specific on / off pattern is formed by calculation (S164). S161 to S164 are repeated, and if the intermittent pattern peculiar to the intermediate system shows a pattern peculiar to the photographing operation (Yes in S164), it is confirmed that the photographing operation is performed by the RF tag built-in camcorder 10 (S165). After confirming that the shooting operation is being performed, a countermeasure against the shooting action is taken (S166).

  Next, the operation procedure on the camcorder side in the intermediate system will be described with reference to FIG. The built-in passive RF tag 10c is switched on (S170), so that it can always respond to the tag information reading operation from the RF tag reader 16a. When the photographing operation is started (S171 Yes), a photographing operation signal is sent from the photographing operation control unit 10b in the camcorder 10 to the passive RF tag 10c, and the passive RF tag 10c is in an intermittent operation state in which the switch is turned on / off. (S172). During the photographing operation, the intermittent operation state of switch on / off is maintained. When the photographing operation is finished (No at S173), the passive RF tag 10c is switched on again (S174), and it is always possible to respond to the tag information reading operation from the RF tag reader 16a.

  In the above-described system using the passive RF tag and the intermediate system, it is necessary to install an RF tag reader in the passenger seat.

  FIG. 18 shows a configuration example in which the RF tag reader is embedded in the seat. This is an installation method in which an RF tag reader is embedded in a seat in consideration of an effective reach of radio waves emitted from the RF tag and obstacles between paths from the RF tag to the RF tag reader.

  FIG. 19 shows an example of RF tag reader installation in consideration of shield measures for the RF tag. The camcorder is a method of installing an RF tag reader with directivity from the front passenger seat to the rear using the positional relationship that the lens must be opened and the screen is in the front of the passenger seat.

  FIG. 20 shows an example in which the same RF tag built-in camcorder is detected from a plurality of RF tag readers, and FIG. 21 shows an example in which the position of the camcorder is specified using the response intensity from the RF tag in this case.

  When a plurality of RF tag readers are installed in the passenger seat, it is conceivable that a tag is detected simultaneously from a plurality of RF tag readers for one RF tag. Regarding the position detection at this time, when the RF tag reader reads the tag information, the response intensity from the tag is also read to calculate which RF tag reader is near the RF tag.

  In the theater-side system configuration of the passive tag system, the RF tag is provided only in the auditorium. However, as with the active tag system, the RF tag reader is installed at the entrance gate and the exit gate. You may comprise so that the tag built-in camcorder may be prevented from being brought into the theater.

  In the theater-side system configuration of the active tag system, the RF tag is provided only at the entrance gate and the exit gate, but the RF tag is also installed in the audience seat as in the passive system. As a result, it is possible to detect the shooting operation in the theater from the RF tag reader in the audience seat, and it is possible to strengthen the support that the shooting operation was performed when shooting the screening program in the theater. Good.

  By embedding an RF tag reader in a chair, it is easy to move the voyeurism prevention system. Therefore, when a movie theater is temporarily set up in a facility that does not normally show movies, a seat with an RF tag reader embedded is installed in the venue. You may comprise so that a voyeurism prevention system is realizable by connecting a tag reader to a server.

  Of course, it can also be realized in an event that does not use a screen for movie screening, such as a theater stage or a concert venue.

It is the figure which showed the schematic block diagram of the theater side system using the active type RF tag applied to Example 1. FIG. It is the figure which showed the schematic block diagram of the camcorder side system using the active type RF tag applied to Example 1. FIG. 3 is an example of a flowchart for explaining an operation procedure of a theater side system applied to the first embodiment. 6 is an example of a flowchart for explaining an operation of writing photographing information to an RF tag when the camcorder applied to the first embodiment performs a photographing operation. It is an example of the flowchart for demonstrating the operation | movement in which tag information reading operation was performed by the RF tag reader applied to Example 1. FIG. 6 is an example of a flowchart for explaining a writing operation of shooting information from an operation control unit of the camcorder applied to the first embodiment. It is the figure which showed the schematic block diagram of the theater side system using the passive type RF tag applied to Example 2. FIG. It is the figure which showed the schematic block diagram of the camcorder side system using the passive RF tag applied to Example 2. FIG. 12 is an example of a flowchart for explaining an operation procedure of a theater side system applied to the second embodiment. 10 is an example of a flowchart for explaining the operation of a passive RF tag in the camcorder side system applied to the second embodiment. It is the figure which showed the schematic block diagram of the theater side system of the intermediate | middle type system applied to Example 3. FIG. It is the figure which showed the schematic block diagram of the camcorder side system of the intermediate | middle type system applied to Example 3. FIG. It is the figure which showed the intermittent operation state of the passive RF tag applied to Example 3. FIG. It is the figure which showed the schematic block diagram of the counter circuit for carrying out the intermittent operation of the passive type RF tag applied to Example 3. It is a figure for demonstrating the operation state of the counter circuit shown in FIG. 12 is an example of a flowchart for explaining an operation procedure of a theater side system applied to the third embodiment. 12 is an example of a flowchart for explaining the operation of a passive RF tag in the camcorder side system applied to the third embodiment. In Example 2, 3, it is the figure shown about the structural example which embeds RF tag reader in a seat. In Example 2, 3, it is the figure which showed the RF tag reader installation example in consideration of the shield countermeasure to RF tag. In Example 2, 3, it is the figure which showed the example which detected the same RF tag built-in camcorder from the some RF tag reader. In Example 2, 3, it is the figure which showed the example which installs a some RF tag reader and pinpoints the position of a camcorder using the response strength from RF tag.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Camcorder 10a ... Active type RF tag 10b ... Shooting operation control part 10c ... Passive type RF tag 10f ... Counter 10f ... Selector 11a, 11b, 16a ... RF tag reader 12 ... Theater 13 ... Tag information database server 14 ... Tag information management server DESCRIPTION OF SYMBOLS 15 ... Screen 16 ... Passenger seat 17a, 17b ... Gate 70 ... Shooting operation | movement detection apparatus

Claims (2)

A system that prevents video camera voyeurism in a particular theater area,
A video camera with a built-in active wireless tag;
First active wireless tag reading means for reading information of the active wireless tag at an entrance to enter the theater area;
A second active type wireless tag reading means for reading information of the active type wireless tag at an exit exit from the theater area;
Active RFID tag information management means for managing information obtained from the first active RFID tag reading means and the second active RFID tag reading means;
When the information obtained from the first active RFID tag reading means and the second active RFID tag reading means in the active RFID tag information management means is not the same, the video camera performs a recording operation in the theater area. Discrimination means for discriminating what has been done;
A voyeurism prevention system for a video camera, comprising: A system that prevents video camera voyeurism in a particular theater area,
A video camera with a built-in passive wireless tag,
Passive wireless tag reading means for reading information of the passive wireless tag in the theater area;
Passive-type RFID tag information managing means for managing information obtained from the passive-type RFID tag reading means;
Photographing operation presence / absence detecting means for detecting presence / absence of photographing operation of the video camera;
A discriminating unit for discriminating that the video camera has performed a recording operation in the theater area when the information of the passive RFID tag information managing unit and the shooting operation presence / absence detecting unit detect presence;
A voyeurism prevention system for a video camera, comprising:

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