JP5162732B2 - Image browsing system - Google Patents

Description

The present invention relates to a picture image browsing system, in particular, to images viewing system that images the monitored area.

  In recent years, the spread of security cameras has been remarkable worldwide. Along with this, concerns about privacy breaches are growing. In the operation of the security camera, generally, the owner, the administrator, and the viewing right holder of the image taken by the security camera are the same.

  In many cases, a photographed image is never viewed unless an incident occurs. This stems from the fact that in many places incidents do not occur so often and the labor costs required for browsing are high.

  However, the mental load that the “system owner can freely view captured images” places on the general public is very large, which is a major obstacle to the further spread of security cameras. It has become.

Therefore, in order to prevent privacy infringement, personal information is acquired from the individual to be imaged, and the image captured by the imaging unit is encrypted with the public key obtained from the personal information to be imaged, and the encrypted image is recorded. A security device is known (Patent Document 1).
JP2007-150559

  However, with the technique described in Patent Document 1, even if the inside of the imaging unit is tampered so that encryption is not performed, the general person does not notice, and thus it is not possible to reliably prevent privacy infringement. There is.

The present invention has been made to solve the above problems, it is possible to prevent crimes, and to provide the images browsing system that can be prevented reliably privacy .

An imaging apparatus according to the present invention includes an imaging unit that captures an image of a monitoring target area, an output unit that encrypts and outputs image data captured by the imaging unit based on an encryption key, and identification on the viewing right holder side When the code is input only once, the encryption key is changed according to the identification code, and the control means for controlling the photographing means so that photographing can be performed, and when the inside is tampered with And a sealing member that is adhered to the surface so as to seal the portion that can be opened, and that is plastically deformed or broken by the tension when peeled.

According to the imaging apparatus according to the present invention, the monitoring target area is imaged by the imaging means. The output means encrypts and outputs the image data picked up by the image pickup means based on the encryption key. Then, with the control means as a trigger when the identification code is input only once, the encryption key is changed according to the identification code and the photographing means is controlled so that photographing is possible.

  A sealing member is attached to the surface so as to seal a portion that can be opened when the inside of the imaging apparatus is tampered. When the sealing member is peeled off, the sealing member is plastically deformed or destroyed.

  In this way, the area to be monitored is imaged, the image data is encrypted, and it can be ensured that the inside has not been tampered with by the sealing member, thus preventing crime and ensuring privacy. Infringement can be prevented. Further, since only the person who has input the identification code can decode the image data, privacy infringement can be surely prevented.

  On the surface of the sealing member, at least one of a sealer sealed by the sealing member, a viewer who has a right to browse image data, and a seal date can be configured to be printed.

An image browsing system according to the present invention limits the output of the image data stored in the storage unit, the storage unit that stores the image data output from the imaging device, the imaging unit, and the viewing right. only when a specific restriction release information Shah side is input, and an information processing apparatus including an output limiting means for outputting the image data stored in the storage means, in response to the identification code reading right side, the Generation means for generating a decryption key corresponding to the encryption key changed according to the identification code, the image data output by the information processing device based on the decryption key generated by the generation means, A browsing unit including a decoding unit for decoding, and a display unit for displaying the image data decoded by the decoding unit.

In the image browsing system according to the present invention, the monitoring target area is imaged by the imaging means in the imaging apparatus. The output means encrypts and outputs the image data picked up by the image pickup means based on the encryption key. Then, with the control means as a trigger when the identification code is input only once, the encryption key is changed according to the identification code and the photographing means is controlled so that photographing is possible. A sealing member is attached to the surface so as to seal a portion that can be opened when the inside of the imaging apparatus is tampered. When the sealing member is peeled off, the sealing member is plastically deformed or destroyed.

  In the information processing apparatus, the image data output by the photographing apparatus is stored in the storage unit, the output restriction unit restricts the output of the image data stored in the storage unit, and specific restriction release information is input. Only in the case, the image data stored in the storage means is output.

  Then, in the browsing device, the generation unit generates a decryption key corresponding to the changed encryption key according to the identification code input to the imaging device, and the decryption unit outputs the decryption key. The image data is decrypted based on the decryption key generated by the generation means. Then, the image data decoded by the decoding means is displayed by the display means.

  In this way, the area to be monitored is imaged, the image data is encrypted, and it can be ensured that the inside has not been tampered with by the sealing member, thus preventing crime and ensuring privacy. Infringement can be prevented. In addition, only when specific restriction release information is input, image data is output, and only the person who has input the identification code can decode and display the image data by the browsing device, thus ensuring privacy infringement. Can be prevented.

  In the information processing apparatus, specific restriction release information is input to the imaging apparatus by the input unit, and the image data output by the imaging apparatus is stored in the storage unit. Then, the image data stored in the storage means is output by the output means.

As described above, according to the images browsing system of the present invention, by imaging a monitored area, encrypts the image data, outputs the image data only when the restriction releasing information specific is input, Since it can be assured that the inside has not been tampered with by the sealing member, it is possible to prevent crimes and to reliably prevent privacy infringement.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a case where the present invention is applied to a security camera system as an image browsing system will be described as an example.

  As shown in FIG. 1, the security camera system 10 according to the first embodiment includes a personal computer (PC) provided in each of a plurality of installation households 12A and a plurality of installation shops 12B on the security camera owner side. ) 14, a security camera 16 provided in each of the plurality of installed households 12A and each of the plurality of installed stores 12B, and a personal computer (PC) 18 as a browsing device provided on the viewing right holder side. Yes. A plurality of security cameras 16 may be provided for one installed household 12A or one installed store 12B. The security camera 16 and the PC 14 are connected to each other via a network such as a LAN. The security camera 16 and the PC 14 correspond to the imaging system of the present invention.

  As shown in FIG. 2, the security camera 16 captures an image of a monitoring area and generates image data that is analog data, and various analog processes for analog image data generated by the imaging system 20. An analog data processing unit 22 that converts analog image data into digital image data, a digital data processing unit 24 that performs various digital data processing on the digital image data converted by the analog data processing unit 22, For example, a nonvolatile memory 26 that stores various data such as CCD mode parameters and sensitivity correction parameters is provided.

  The digital data processing unit 24 performs encryption processing on the digital image data based on the encryption key stored in the non-volatile memory 26, generates encrypted encrypted image data, and outputs the encrypted image data to the PC 14 To do.

  The nonvolatile memory 26 stores an encryption key and various data used in the encryption process of the digital data processing unit 24. The encryption key is stored in the nonvolatile memory 26 in a non-rewritable form.

  The security camera 16 is provided with a reset button 28A accessible from outside the security camera 16 and inside the security camera 16 so that the security camera 16 cannot be accessed from outside unless the case of the security camera 16 is opened. And a reset button 28B provided.

  When the reset button 28A is pressed, various settings other than the encryption key are returned to the default settings. When the reset button 28B is pressed, the encryption key is returned to a default state, for example, a blank. When the reset button 28B is pressed, the encryption key can be set (or overwritten) only once.

  A seal seal 30 is attached to the surface of the security camera 16. As shown in FIGS. 3 (A) and 3 (B), a seal seal 30 is affixed on a joining screw for closing the case of the security camera 16. On the surface of the seal sticker 30, a sealant, a viewer who has the right to view image data, a seal date, and a serial number of the seal sticker are printed. The “sealant” and the “browser” may be the same or different.

  The seal 30 seals the case of the security camera 16 so that the security camera 16 cannot be opened to access the inside of the security camera 16, and the appearance of the security camera 16 is impaired. It is stuck so that there is no.

  Further, as the seal seal 30, the same kind as a commercially available “tamper-proof seal”, “sealing seal”, “counterfeit prevention seal”, etc. may be used. As shown in FIG. When the seal seal 30 is peeled off, the seal seal 30 is broken by the tension at the time of peeling, and the original state is not restored. Therefore, tampering prevention and opening confirmation can be reliably performed. In addition, as the seal seal 30, a seal in which characters such as “opened” appear on the surface when peeled may be used. Further, as the seal seal 30, a seal that is plastically deformed by a tension when being peeled may be used.

  Further, as the seal seal 30, for example, a tear-cut seal, a special ink print seal, a brittle label seal, or the like may be used. A tear-and-cut seal is a seal that is torn from the cut and cannot be removed cleanly even if it is about to peel off. The special ink printing sticker is a sticker that can be visually recognized when the color of a portion printed by special printing is changed by a viewer. The seal of the brittle label is a seal that is formed of a brittle material that is easily broken when it is peeled off, and leaves a trace.

  Here, the principle of the invention in this embodiment will be described. The seal seal 30 is attached to the surface of the security camera 16 so as to seal the portion that can be opened when the inside is tampered with, so that a general passerby can also see the security camera simply by looking at the security camera 16 from the outside. It can be understood that an image captured by the camera 16 is encrypted and stored. Therefore, privacy infringement can be reliably prevented. Further, a general passerby who sees the security camera 16 from the outside can be convinced that no one can view the image recorded by the security camera 16 unless there is a crime or a suspicious person.

  The PC 14 provided in the installed household 12A and the installed store 12B has the same configuration as a conventionally known personal computer, and includes a CPU (not shown), a RAM (not shown), a ROM (not shown), a monitor 32, and an HDD 34. A keyboard (not shown), a mouse (not shown), and the like. The HDD 34 of the PC 14 stores encrypted image data output from the security camera 16. Also, the HDD 34 stores a password for canceling the access restriction to the stored encrypted image data in association with the user ID. Since the encrypted image data is stored in the HDD 34, the security camera owner who does not know the encryption key cannot view the image data. Also, security camera owners who do not know the password cannot access the encrypted image data and thus cannot view the image data.

  Further, the PC 14 incorporates camera control software for controlling the security camera 16. The user ID and password are stored in the HDD 34 so that the user ID and password stored in the HDD 34 cannot be read by the camera control software.

  The camera control software generates a folder for each year / month / day in the HDD 34. The camera control software assigns the hour, minute, and second of the time when the encrypted image data is stored to the encrypted image data output from the security camera 16 as a part of the file name. Remember to folder. For example, the file name of the encrypted image data is automatically generated based on time information (hour, minute, second) and location information, and the save destination folder is automatically generated for each camera and each year, month, and day. This improves the convenience of file management of encrypted image data.

  In addition, the camera control software decrypts the encrypted image data and displays the image deteriorated by applying the mosaic on the monitor 32 so that the security camera 16 can be confirmed to be surely operating. It has a function. When an image is displayed on the monitor 32, the encrypted image data is decrypted with a decryption key built in the camera control software. This decryption key is incorporated in a form that cannot be read by the camera control software. Also, the image displayed on the monitor 32 (the image that has deteriorated after decoding) is deleted without being stored in the HDD 34.

  The camera control software has the following functions. First, it has a function that saves only moving images. In this function, a threshold value for determining how much motion is to be stored is set, and the motion detection sensitivity for a rectangular region having an arbitrary position and size is arbitrarily set. For example, in an environment where a night illumination lamp or the like blinks, the sensitivity of the area is set to zero. In addition, the sensitivity of a specific area is set to be increased (for example, 100 times).

  The camera control software is equipped with a safety function to prevent program runaway. With this function, when the number of images stored per day exceeds the set limit, an error message is displayed on the monitor 32, and the threshold value relating to the function of storing only moving images is automatically increased. Set to prevent program runaway.

  The camera control software is equipped with an automatic image erasing function and a warning function regarding the remaining disk capacity. In the automatic image erasing function, the number of days for storing images is arbitrarily set. As the number of storage days, 1 to 999 days are set on a daily basis, and when 1000 days or more are set, this function is set to be turned off. For example, if 30 days is set as the number of storage days, the encrypted image data stored in each PC 14 is automatically deleted after 30 days unless an incident or accident occurs. The warning function regarding the remaining disk capacity displays a warning message on the monitor 26 when the remaining disk capacity falls below a predetermined amount.

  The PC 18 on the viewing right side has the same configuration as a conventionally known personal computer, CPU (not shown), RAM (not shown), ROM (not shown), monitor 36, HDD 38, keyboard (not shown). And a mouse (not shown).

  Image viewing software is incorporated in the PC 18, and the encrypted image data obtained from the HDD 34 of the PC 14 is decrypted based on the decryption key so that the image data can be viewed. . The decoded image data is displayed on the monitor 36 and stored in the HDD 38. Note that the decryption key is incorporated in the image browsing software.

  Next, image data encryption and decryption methods used in the security camera system 10 according to the present embodiment will be described. Currently, public key cryptography is generally used as encryption, and public key cryptography may be used in this embodiment. However, the public key cryptography requires a relatively large amount of calculation for the encryption process and the decryption process, and in the encryption in the present embodiment, the encryption key sealed in the security camera 16 is not used. Since the owner of the security camera 16 does not know, there is no need for public key cryptography. Therefore, in the present embodiment, a case will be described in which a relatively simple method with a small amount of encryption processing and decryption processing is used.

  As an example of simple encryption, a fixed length (for example, 32 bits) encryption key is used, and image data of the same length is exclusive ORed with the encryption key for encryption. It is possible. However, this method has a drawback that an encryption key may be estimated from encrypted image data when a constant value such as 0 continues in the image data.

  Therefore, in the present embodiment, the exclusive OR of the value generated by the random number generation algorithm (M series) using the encryption key as a seed and the image data is used as the encrypted image data. In the decryption process, the same decryption key as the encryption key is used as a seed to generate a random number by the same random number generation algorithm, and the exclusive OR of the random number and the encrypted image data is calculated to obtain the encrypted image data. Is decrypted.

  As shown in FIG. 4A, the digital data processing unit 24 of the security camera 16 includes an encryption processing unit 40, and the encryption processing unit 40 is composed of a non-volatile memory and stores an encryption key. An encryption key storage unit 42, an M-sequence generation processing unit 44 that generates a random number using an encryption key as a seed of random numbers, and a random number generated for each image data and image data having the same length as the random number And an exclusive OR operation unit 46 for generating encrypted image data. The M-sequence generation processing unit 44 sequentially generates random numbers having a fixed length (for example, 32 bits). The random-number sequence is initialized for each image data.

  As shown in FIG. 4B, the image viewing software of the viewing right person's PC 18 includes a decryption processing unit 50, and the decryption processing unit 50 has the same configuration as the encryption processing unit 40. An exclusive key storage unit 52 that stores the same decryption key as the encryption key, an M-sequence generation processing unit 54 that generates a random number, and an exclusive logical ring to calculate the exclusive logical ring and to decrypt the encrypted image data And an OR operation unit 56. In this way, the decryption processing unit 50 decrypts the encrypted image data by performing the same processing as the encryption processing in the security camera 16.

  The decryption process performed by the camera control software of the PC 14 on the security camera owner side also performs the same process as the decryption processing unit 50 described above.

  Next, the operation of the security camera system 10 according to the first embodiment will be described. First, in the security camera 16, an imaging process routine shown in FIG.

  In step 100, an image of the monitoring target area is captured by the imaging system 20 to acquire analog image data. In step 102, various analog data processing is performed on the analog image data, and digital image data is converted. Convert. In step 104, various digital data processing is performed on the digital image data. In step 106, the digital image data is encrypted based on the encryption key stored in the nonvolatile memory 26. To generate encrypted image data.

  In the next step 108, the encrypted image data generated in step 106 is output to the PC 14, and the process returns to step 100.

  Then, the PC 14 determines whether or not there is a motion in the image based on the change amount of the previous and next encrypted image data with respect to the encrypted image data output from the security camera 16, and the image has a motion. If it is determined, the encrypted image data file is stored in the folder of the HDD 34 corresponding to the date of storing the encrypted image data.

  When the viewing right person sets a CD-R as a recording medium on the PC 14 and instructs the recording process of the encrypted image data, the data output processing routine shown in FIG. 6 is executed.

  First, in step 120, whether the date and time when the desired encrypted image data was stored, the user ID, and the password for releasing the access restriction on the encrypted image data were input from the viewing right holder. If it is determined that the date, time, user ID, and password are input from the viewing right holder, the process proceeds to step 122.

  In step 122, a password for releasing the access restriction corresponding to the user ID input in step 120 is acquired from the HDD 34. In step 124, the password input in step 120 and acquired in step 122. It is determined whether or not the entered password matches. If it is determined in step 124 that the passwords do not match, the data output processing routine is terminated without releasing the access restriction on the encrypted image data. On the other hand, if it is determined in step 124 that the passwords match, it is determined that the access restriction on the encrypted image data is to be released, and in step 126, the date and time input in step 120 are applicable. A file of encrypted image data to be acquired is acquired from the HDD 34.

  In step 128, the encrypted image data file acquired in step 126 is recorded on the set CD-R, and the data output processing routine ends.

  Also, the viewing right person carries the CD-R on which the encrypted image data is recorded from the security camera owner's PC 14 to the viewing right person's PC 18 and sets the CD-R in the PC 18 to obtain the image data. When the browsing process is instructed, the browsing process routine shown in FIG.

  First, in step 140, the encrypted image data stored in the set CD-R is acquired, and in step 142, the encrypted image data acquired in step 140 is decrypted based on the decryption key. Process. In step 144, the decoded image data is recorded in the HDD 38, and in step 146, the decoded image data is displayed on the monitor 36.

  In step 148, it is determined whether or not the processing in steps 140 to 146 has been performed on all the encrypted image data recorded on the CD-R, and the encryption in which the above processing has not been performed. If there is encrypted image data, the process returns to step 140. On the other hand, if the above processing is performed on all the encrypted image data, the browsing process routine is terminated.

  As explained above, according to the security camera system according to the first embodiment, the crime prevention camera can capture an image of the monitored area by the security camera, and the image data can be encrypted. Since the seal seal ensures that the inside has not been tampered with, privacy infringement can be reliably prevented.

  Also, the encrypted image data is output only when the correct user ID and password are input to the security camera owner's PC, and the encrypted image data is decrypted and viewed by the viewing right person's PC. Therefore, privacy infringement can be prevented.

  By encrypting the image data, it is possible to separate the security camera owner who owns the image data from the viewing rights holder who can view the image data. The encrypted image data is passed from the security camera owner to the viewing right holder only when both the owner and the viewing right recognize the necessity for viewing, and the encrypted image data is decrypted by the viewing right owner. Will be viewed. As a result, nobody can view the image data when it is unnecessary and urgent. In this way, to promote the widespread use of security cameras throughout the community by reducing the risk of privacy infringement and at the same time reducing unnecessary mental burden on privacy infringement that can be given to third parties Can do.

  When the viewing right person is the police, the general public purchases and manages the security camera, so that the initial introduction cost and the maintenance management cost on the police side become unnecessary. Thus, the police and the government can increase the safety and security of the town without financial burden.

  In the above embodiment, the case where the encryption key and the decryption key are the same has been described as an example. However, the present invention is not limited to this, and the encryption key and the decryption key are different. It may be a thing. For example, if the encryption processing algorithm and the decryption processing algorithm are different, a decryption key corresponding to the encryption key set in the security camera is incorporated in the image viewing software of the viewing right person's PC. You can do it.

  Next, a second embodiment will be described. In addition, since the structure of the security camera system which concerns on 2nd Embodiment is the structure similar to 1st Embodiment, it attaches | subjects the same code | symbol and abbreviate | omits description.

  In the second embodiment, the fact that the character string is arbitrarily inputted only once into the security camera is used as a trigger, the encryption key is changed according to the inputted character string, This is mainly different from the first embodiment in that it is configured so that photographing by a security camera is possible by input.

  Since the sealer who seals the security camera 16 with the seal seal 30 sets the encryption key in the security camera 16 and seals it, the sealer inevitably knows the encryption key. However, it is preferable that the encryption key is secret to all other persons except the viewing right holder. In order to realize this state, the security camera does not operate unless the encryption key is set, and the encryption key can be set only once unless the seal seal 30 of the security camera 16 is broken. A special mechanism is added to the security camera 16.

  In the second embodiment, after the sealer sets the encryption key in the security camera 16 and seals it with the seal sticker 30, the system set (security camera 16, camera control software, browsing processing software) Distribute to viewing rights holders (for example, police stations). Then, the viewing-right holder inputs an arbitrary character string as an identification code to the security camera 16 only once, and the security camera 16 stores the encryption stored in the nonvolatile memory 26 according to the input character string. The activation key is changed. Further, the security camera 16 is in a state where it can be imaged with the input of a character string as a trigger.

  Further, when the viewing right person decompresses the browsing processing software on the PC 18, the same character string is input only once, and the PC 18 incorporates the browsing processing software in accordance with the input character string. The decryption key is changed. Here, the changed decryption key is the same as the encryption key changed by the security camera 16.

  When the encryption key and the decryption key are changed once in the security processing camera 16 and the browsing processing software of the PC 18, it cannot be rewritten from the outside by any method thereafter. As a result, a sealer who does not know the changed encryption key and decryption key cannot decrypt the encrypted image data, so that a sense of security against privacy infringement is enhanced.

  Next, the operation of the security camera system 10 according to the second embodiment will be described. First, when the viewing right person activates the security camera 16, the security camera 16 executes an encryption key setting processing routine shown in FIG.

  In step 200, it is determined whether or not the activation is the first time. If the activation is not the first time, it is determined that the encryption key has already been set by the viewing right holder, and the encryption key setting processing routine is executed. On the other hand, if it is determined that the activation is the first time, it is determined that the encryption key is not set by the viewing right holder, and the process proceeds to step 201.

  In step 201, a screen for inputting an arbitrary character string as an identification code is displayed on a display (not shown), and it is determined whether or not a character string has been input by the viewing right holder. When a character string is input by operating the part (not shown), the process proceeds to step 202.

  In step 202, an encryption key is generated from a specific algorithm based on the input character string. In step 204, the encryption key generated in step 202 is stored in the nonvolatile memory 26 and encrypted. Set as encryption key used in processing.

  Then, it is determined that the encryption key has been set by the viewing right holder, and in step 206, the security camera 16 is set in a state where it can be imaged, and the encryption key setting processing routine is terminated.

  Further, when the viewing right person sets the CD-ROM storing the browsing processing software to the viewing right person's PC 18 and instructs the decompression of the browsing processing software, the decompression process shown in FIG. The routine is executed.

  First, in step 210, the browsing processing software is read from the set CD-ROM, and the browsing processing software is decompressed and incorporated into the PC 18. In step 212, a screen for inputting an arbitrary character string as an identification code is displayed on the monitor 36, and it is determined whether or not the character string is input from the viewing right holder. When a character string is input by operating the mouse, the process proceeds to step 214.

  In step 214, a decryption key is generated based on the input character string using the same algorithm as the above encryption key setting processing routine. In step 216, the decryption key generated in step 214 is converted into an image. It is incorporated in the browsing software, set as a decryption key used in the decryption process, and the decompression process routine ends.

  Other processes are the same as those in the first embodiment, and a description thereof will be omitted.

  As described above, according to the security camera system according to the second embodiment, the surveillance camera area can be imaged by the security camera, crime can be prevented, and the image data is encrypted, The seal seal can ensure that the inside has not been tampered with and can reliably prevent privacy infringement.

  Further, since only the person who inputs an arbitrary character string for changing the setting of the encryption key to the security camera can decrypt the image data, it is possible to reliably prevent privacy infringement.

  Also, only when the correct user ID and password are input to the security camera owner's PC, the encrypted image data is output, and only the viewing right person who entered an arbitrary character string is Since the encrypted image data can be decrypted and viewed by the PC, privacy infringement can be reliably prevented.

  Also, when the security camera is first activated, the right-of-viewer changes the encryption key setting and passes the security camera with the encryption key set to the security camera owner. The viewing right person can set the activation key.

  In the above embodiment, the case where the password setting for releasing the access restriction on the encrypted image data is not configured to be changeable on the PC of the security camera owner side has been described as an example. However, the present invention is not limited thereto, and it may be configured such that password setting can be changed by camera control software. For example, the password setting for releasing the access restriction on the encrypted image data may be freely changed by the security camera owner any number of times. This prevents the viewing rights holder from freely acquiring encrypted image data when the viewing rights holder has some means (such as the Internet) for electronic access to the PC of the security camera owner. can do.

  In the above embodiment, the encryption key and the decryption key are the same, and the encryption key and the decryption key are generated by the same algorithm. However, the present invention is not limited to this. The encryption key and the decryption key are not the same, and the encryption key and the decryption key may be generated by different algorithms. In this case, when the decryption key is set based on the input character string on the viewing-right holder's PC, an input character is generated by an algorithm that generates a decryption key corresponding to the encryption key. A decryption key corresponding to the changed encryption key may be generated from the column and incorporated into the image browsing software of the viewing right person's PC.

  Next, a third embodiment will be described. In addition, since the structure of the security camera system which concerns on 3rd Embodiment is the structure similar to 1st Embodiment, it attaches | subjects the same code | symbol and abbreviate | omits description.

  In the third embodiment, when an encryption key is set in the security camera, an arbitrary character string and a character string obtained by encrypting the arbitrary character string with a secret key are input to the security camera by the viewing right holder. This is mainly different from the second embodiment.

  In the third embodiment, in order to ensure that the encryption key of the security camera 16 is set by the viewing right person, the viewing right person uses a pair of encryption techniques using public key encryption technology. An encryption key and a decryption key are created, and the decryption key is provided as a public key to the sealer. Then, the sealer incorporates a process of decrypting information with the decryption key into the security camera 16.

  When setting an encryption key for image data encryption processing in the security camera 16, the viewing-right holder stores an arbitrary character string and a character string obtained by encrypting the character string with a secret key in the security camera 16. input. The security camera 16 decrypts the input encrypted character string with the incorporated decryption key, compares the decrypted character string with the separately input character string, and if both match, Based on the input character string, an encryption key for image data encryption processing is set.

  Next, the operation of the security camera system 10 according to the third embodiment will be described. First, when the viewing right person activates the security camera 16, the security camera 16 executes an encryption key setting processing routine shown in FIG. Note that the same processes as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  First, in step 200, it is determined whether or not the activation is the first time. If the activation is not the first time, the encryption key setting processing routine is terminated. On the other hand, it is determined that the activation is the first time. If YES, go to step 300.

  In step 300, a screen for inputting an arbitrary character string in plain text and a character string obtained by encrypting the character string is displayed on a display (not shown), and the character string and encryption in plain text are displayed by the viewing right holder. It is determined whether or not the character string has been input, and when the viewing right person operates the operation unit (not shown) to input the character string, the process proceeds to step 302.

  In step 302, the encrypted character string input in step 300 is decrypted based on a preset decryption key. In step 304, the plain text input in step 300 is obtained. The character string and the character string decrypted in step 302 are compared to determine whether they match. If it is determined in step 304 that the character strings do not match, it is determined that the encryption key setter is other than the viewing right holder, and the encryption key setting processing routine is terminated. On the other hand, if it is determined in step 304 that the character strings match, it is determined that the person who set the encryption key is the viewing right holder, and the process proceeds to step 202.

  In step 202, an encryption key is generated from a specific algorithm based on the input character string, and in step 204, the encryption key generated in step 202 is set as an encryption key used in the encryption process. To do. In step 206, the security camera 16 is set in a state where it can be imaged, and the encryption key setting processing routine is terminated.

  In this way, when setting the encryption key for the security camera, the viewing right person inputs an arbitrary character string and a character string obtained by encrypting the arbitrary character string with the secret key to the security camera. By ensuring that the encryption key is set by the viewing right holder, privacy infringement can be prevented more reliably.

  Next, a fourth embodiment will be described. In addition, about the part which becomes the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the fourth embodiment, encrypted image data is stored in the security camera, and access restriction by a password is set for the stored encrypted image data, and an arbitrary character string is set in the security camera. In response to the input of the user ID and password only once, the encryption key, user ID, and password are changed according to the input character string, user ID, and password. This is mainly different from the first embodiment and the second embodiment.

  As shown in FIG. 11, the security camera 416 of the security camera system 410 according to the fourth embodiment includes an imaging system 20, an analog data processing unit 22, and a digital data processing unit 424 that performs various digital data processing. For example, a nonvolatile memory 426 for storing various data such as CCD mode parameters and sensitivity correction parameters and image data.

  The digital data processing unit 424 performs encryption processing on the digital image data based on the encryption key stored in the nonvolatile memory 426, generates encrypted encrypted image data, and generates the nonvolatile memory. Store in 426. In addition, the digital data processing unit 424 performs access restriction processing on the encrypted image data stored in the nonvolatile memory 426 and is stored in the nonvolatile memory 426 only when a correct user ID and password are input. The encrypted image data is output to the PC 14.

  The nonvolatile memory 426 stores an encryption key used in the encryption process of the digital data processing unit 424, a user ID and password set for the access restriction process, and various data. The encryption key, user ID, and password are stored in the non-volatile memory 426 in a non-rewritable form.

  In the security camera 416, the number of days for storing the encrypted image data is set. Unless an incident or accident occurs, the encrypted image data stored in the nonvolatile memory 426 is automatically deleted after the set number of days for storage has elapsed. The

  The security camera 416 includes a reset button 28A and a reset button 428B provided inside the security camera 16 so that the security camera 16 cannot be accessed from the outside unless the case of the security camera 16 is opened. I have. When the reset button 428B is pressed, the encryption key, user ID, and password are returned to the default state. Further, when the reset button 428B is pressed, the encryption key, the user ID, and the password can be set (or overwritten) only once.

  After the sealer sets an encryption key, a user ID, and a password in the security camera 416 and the security camera 416 is sealed by the seal sticker 30, the system set (security camera 416, camera control software, browsing processing software) ) Is distributed to viewing rights holders (for example, police stations). At this time, the viewing right person activates the security camera 416, inputs an arbitrary character string as an identification code, a user ID, and a password only once, and the security camera 416 responds to the input character string. The encryption key, user ID, and password stored in the nonvolatile memory 426 are changed. Further, the security camera 416 is in a state where it can be imaged with the input of a character string, a user ID, and a password as a trigger.

  In addition, a seal seal 30 is attached to the surface of the security camera 416 as in the first embodiment. Since the seal seal 30 is attached to the surface of the security camera 416 so as to seal a part that can be opened when the inside is tampered with, the security camera 416 can be photographed only by looking at the security camera 416 from the outside. It can be understood that the images to be stored are encrypted and stored and access restrictions are set. Therefore, a general passerby who has seen the security camera 416 from the outside can be convinced that privacy violation is reliably prevented.

  Further, the camera control software incorporated in the PC 14 provided in the installation household 12A or the installation store 12B can be applied to the encrypted image data stored in the nonvolatile memory 426 of the security camera 416 by operating the keyboard or the mouse. When the user ID and password for canceling the access restriction are input, the input user ID and password are input to the security camera 416.

  The other configuration of the PC 14 and the configuration of the PC 18 are the same as those in the first embodiment.

  Next, the operation of the security camera system 410 according to the fourth embodiment will be described. In addition, about the process similar to 1st Embodiment and 2nd Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  First, when the viewing right person activates the security camera 416, the security camera 416 executes an encryption key password setting processing routine shown in FIG.

  In step 200, it is determined whether or not the activation is the first time. If the activation is not the first time, the encryption key password setting processing routine is terminated. On the other hand, it is determined that the activation is the first time. If so, the process proceeds to step 451.

  In step 451, a screen for inputting an arbitrary character string as an identification code, a user ID, and a password is displayed on the display, and whether or not the character string, the user ID, and the password are input from the viewing right person. When the determination is made and the viewing right person operates the operation unit to input the character string, the user ID, and the password, the process proceeds to step 202.

  In step 202, an encryption key is generated from a specific algorithm based on the input character string, and in step 204, the encryption key generated in step 202 is stored in the nonvolatile memory 426 and encrypted. Set as encryption key used in processing.

  In the next step 452, the input user ID and password are stored in the nonvolatile memory 426 and set as a user ID and password related to access restriction.

  Then, it is determined that the encryption key, the user ID, and the password have been set by the viewing right person, and in step 206, the security camera 416 is set in a state where it can be imaged, and the encryption key setting processing routine is ended.

  Further, in the security camera 416, an imaging process routine shown in FIG. 13 is executed. First, in step 100, an image of the monitoring target region is captured by the imaging system 20 to acquire analog image data. In step 102, various analog data processes are performed and converted into digital image data. In step 104, various digital data processing is performed on the digital image data.

  In step 458, it is determined whether or not the image has movement based on the change amount of the digital image data before and after the digital image data. If it is determined that the image has no movement, The digital image data is discarded without being stored, and the process returns to step 100. On the other hand, if it is determined that there is motion in the image, in step 106, the digital image data is encrypted based on the encryption key stored in the nonvolatile memory 426, and the encrypted image data Is generated.

  In the next step 460, the encrypted image data generated in step 106 is stored in the nonvolatile memory 426 and the process returns to step 100.

  In addition, when the viewing right person instructs the PC 14 to access the encrypted image data stored in the security camera 416 and an access request is input from the PC 14 to the security camera 416, the security camera 416 14 is executed.

  First, in step 470, whether the date and time when the desired encrypted image data is stored, the user ID, and the password for releasing the access restriction of the encrypted image data are input from When the determination is made and the date, time, user ID, and password are input to the security camera 416 from the viewing right person via the PC 14, the process proceeds to step 472.

  In step 472, a password corresponding to the user ID input in step 470 is acquired from the nonvolatile memory 426. In step 474, the password input in step 470 and the password acquired in step 472 are obtained. It is determined whether or not they match. If it is determined in step 474 that the passwords do not match, the data output processing routine is terminated without releasing the access restriction on the encrypted image data. On the other hand, if it is determined in step 474 that the passwords match, it is determined that the access restriction to the encrypted image data is to be released, and in step 476, the date and time input in step 470 correspond to the date and time. The encrypted image data file to be acquired is acquired from the nonvolatile memory 426.

  In step 478, the encrypted image data file acquired in step 476 is output to the PC 14, and the data output processing routine is terminated.

  Then, the PC 14 stores the encrypted image data file output from the security camera 416 in the HDD 34. Further, when the viewing right person sets a CD-R as a recording medium on the PC 14 and instructs recording processing of the encrypted image data, the encrypted image data stored in the HDD 34 is recorded on the CD-R. . Then, the viewing-right holder carries the CD-R on which the encrypted image data is recorded from the security camera owner's PC 14 to the viewing-right holder's PC 18 and sets the CD-R in the PC 18 to store the image data. When the browsing process is instructed, the browsing process routine described in the first embodiment is executed, and the encrypted image data is decrypted and stored in the HDD 38 and displayed on the monitor 36.

  As described above, according to the security camera system according to the fourth embodiment, the crime prevention camera can capture an image of the monitored area by the security camera, and a correct user ID and password can be input. Only when it has been done, the encrypted image data stored in the security camera is output, and since it is ensured that the inside has not been tampered with by the seal sticker, privacy infringement can be surely prevented.

  Also, only when the correct user ID and password are input to the security camera, the encrypted image data is output, and the encrypted image data is decrypted and viewed by the viewing right person's PC, Privacy infringement can be prevented.

  In the above embodiment, the case where the encryption process is performed by the security camera has been described as an example. However, the present invention is not limited to this, and the image data is encrypted by the PC of the security camera owner side. Processing may be performed. In that case, a security camera in which only access restrictions are set may be used.

  Next, a fifth embodiment will be described. In addition, about the part which becomes the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The fifth embodiment is mainly different from the first embodiment in that the analog image signal is output from the security camera and the analog image signal is output from the security camera to the video tape recorder. ing.

  As shown in FIG. 15, a security camera system 510 according to the fifth embodiment includes a video tape recorder 514 provided in each of a plurality of installation households 12A and a plurality of installation stores 12B on the security camera owner side. A security camera 516 provided in each of the plurality of installed households 12A and each of the plurality of installed stores 12B, a personal computer (PC) 518 provided on the viewing right side, and provided on the viewing right side And a video tape recorder 520.

  The security camera 516 includes an imaging system 20, an analog data processing unit 22, a digital data processing unit 524 that scrambles the digital image data based on the encryption key, and encrypts the digital image data. And an analog image signal generation unit 540 that converts the digital image data encrypted by the scramble process into an analog image signal such as NTSC and outputs the analog image signal.

  The scramble process in the digital data processing unit 524 is realized by, for example, a process of rearranging the pixels of each part of the image according to the encryption key information. Note that the scramble processing is not limited to this method, and may be realized by another method.

  Moreover, the seal sticker 30 is stuck on the surface of the security camera 516 as in the first embodiment.

  The video tape recorder 514 records the analog image signal output from the security camera 516 on the video tape 534. Here, since the image recorded on the video tape 534 is scrambled, the contents cannot be confirmed.

  The video tape 534 recorded by the video tape recorder 514 on the security camera owner side is carried by the viewing right holder to the video tape recorder 520 on the browsing right side.

  The video tape recorder 520 on the viewing right side reproduces the video tape on which the encrypted analog image signal is recorded, and outputs it to the PC 518.

  The PC 518 includes a video capture unit 522, and the video capture unit 522 captures data output from the video tape recorder 520 into the PC 518 using a video capture function.

  In addition, the image browsing software of the PC 518 has a decoding key, that is, image reordering information performed by the scramble process embedded therein, and based on this decryption key, reverse reordering to the scramble process is performed. The image is decoded, and a normal image is stored in the HDD 38 and displayed on the monitor 36.

  Next, a sixth embodiment will be described. In addition, about the part which has the structure similar to 1st Embodiment and 4th Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The sixth embodiment is mainly different from the fourth embodiment in that a PC provided in an installed household or an installed store and a PC on the viewing right side are connected via the Internet. Yes.

  As shown in FIG. 16, a security camera system 610 according to the sixth embodiment includes a plurality of PCs 614 provided in each of a plurality of installation households 12A on the security camera owner side and each of a plurality of installation stores 12B. Security cameras 416 provided in each of the installed households 12A and each of the plurality of installed shops 12B, a PC 618 provided on the viewing right side, and a network 620 such as the Internet for mutually connecting the PC 614 and the PC 618 And.

  The security camera owner's PC 614 includes a CPU (not shown), a RAM (not shown), a ROM (not shown), a monitor 32, an HDD 34, a keyboard (not shown), a mouse (not shown), a network interface 632, and the like. ing. The network interface 632 of the PC 614 transmits / receives data to / from other devices via the network 620. The network interface 632 transmits the encrypted image data stored in the HDD 34 to another device via the network 620.

  The PC 618 on the viewing right side has the same configuration as a conventionally known personal computer, and includes a CPU (not shown), a RAM (not shown), a ROM (not shown), a monitor 36, an HDD 38, a keyboard (not shown), a mouse. (Not shown), a network interface 636, and the like. A network interface 636 of the PC 618 transmits / receives data to / from other devices via the network 620.

  In the present embodiment, when encrypted image data is passed from the PC 614 to the PC 618, the user ID and password for accessing the PC 614 are transmitted from the PC 618 to the PC 614 via the network 620, and the user ID and password are verified. If successful, the user ID and password for accessing the encrypted image data are further transmitted from the PC 618 to the security camera 416 via the network 620 and the PC 614. When the security camera 416 successfully matches the user ID and password, the desired encrypted image data is transmitted from the security camera 416 to the PC 614 via the LAN of the installed household 12A or the installed store 12B. This exchange is performed using a private dedicated communication protocol described below.

  In this communication protocol, communication is protected by SSL, and encryption including the payload is performed. Therefore, it is difficult to restore an image even if it is wiretapped. In addition, by changing the communication procedure and performing communication using a unique protocol, we will ensure complete communication. As a result, even if the communication is wiretapped, it is difficult to guess what the communication is. This unique protocol is an extension of FTP, for example, and has a communication procedure as shown in FIG. In the following, a case will be described in which an encrypted image data inquiry is made from the security camera 416 to the PC 614 on the security camera owner side.

  First, (1) the message “camera image server” of the security camera 416 is transmitted to the PC 614, and (2) the user name is input from the PC 614 to the security camera 416 (in this example, the user name is “hoge”). Then, (3) the security camera 416 requests a password from the PC 614, and (4) the password is input from the PC 614 to the security camera 416.

  Next, (5) a login message “user hologged in” is transmitted from the security camera 416 to the PC 614, and (6) the PC 614 specifies its own IP address and a port used for data connection. For example, when “PORT 192, 168, 1, 2, 4, 150” is designated, the port 1174 (4 × 256 + 150) of the IP address 192.168.1.2 is designated.

  Then, (7) the TIMEFIND command “TIMEFIND 2007070172222401” for retrieving the image data at the time requested by the PC 614 is executed, and (8) the list of image data at the requested time is notified from the security camera 416 to the PC 614. Here, file transfer conforms to FTP, but communication is performed at a port other than the well-known port.

  Next, the operation of the security camera system 610 according to the sixth embodiment will be described. In addition, about the process similar to 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  First, in the security camera 416, the imaging process routine described in the fourth embodiment is executed, and the encrypted image data is stored in the folder of the nonvolatile memory 426 corresponding to the date when the encrypted image data is stored. Remember.

  Further, in the security camera 416, a data transmission processing routine shown in FIG. 18 is executed. In step 650, it is determined whether the transmission request for the encrypted image data and the user ID and password for accessing the encrypted image data are received from the PC 614, and the transmission request, the user ID, and the password are received from the PC 614. If received, the process proceeds to step 472.

  In step 472, the password corresponding to the received user ID stored in the nonvolatile memory 426 is acquired. In step 474, the password received in step 650 matches the password acquired in step 472. It is determined whether or not to do. If it is determined in step 474 that the passwords do not match, the data transmission processing routine is terminated without releasing the access restriction on the encrypted image data. On the other hand, if it is determined in step 474 that the passwords match, it is determined that the access restriction to the encrypted image data is to be released, and in step 652, the date and date when the desired encrypted image data is stored and It is determined whether or not the time has been received from the PC 614. When information indicating the date and time is received from the PC 614, the process proceeds to step 476, and the encrypted image data file corresponding to the date and time received in step 652 is acquired from the nonvolatile memory 426.

  In step 654, the encrypted image data file acquired in step 476 is transmitted to the PC 614 via the LAN, and the data transmission processing routine is terminated.

  The PC 614 temporarily stores the encrypted image data file received from the security camera 416 in the HDD 34, and then the PC 614 transmits the encrypted image data file stored in the HDD 34 to the PC 618 via the network 620. To do.

  In addition, when the viewing right person instructs the image data browsing process in the PC 618, the browsing process routine shown in FIG. 19 is executed in the PC 618.

  First, in step 658, the user ID and password for accessing the PC 614 on the security camera owner side, the IP address of the PC 614, the user ID and password for accessing the encrypted image data of the security camera 416, desired It is determined whether or not the date and time when the encrypted image data is stored is input, and when the viewing right person inputs various user IDs and passwords, the date and time, and the IP address, Proceed to step 660. In step 660, a transmission request for encrypted image data is transmitted via the network 620 to the PC 614 corresponding to the IP address input in step 658.

  In step 662, the user ID and password for accessing the PC 614 input in step 658 are transmitted to the PC 614 via the network 620. When the password authentication is successful, in step 664, the above step 658 is executed. The input information indicating the user ID, password, date, and time for accessing the encrypted image data of the security camera 416 is transmitted to the PC 614 via the network 620.

  As a result, the PC 614 receives the encrypted image data file from the security camera 416 based on the received information indicating the user ID, password, date, time, and the received encrypted image data file. Send to PC 618.

  In the next step 666, the encrypted image data transmitted from the PC 614 is received, and in step 142, the encrypted image data received in step 666 is decrypted based on the decryption key. In step 144, the decoded image data is recorded in the HDD 38, and in step 146, the decoded image data is displayed on the monitor 36.

  In step 668, it is determined whether or not all encrypted image data has been received. If there is encrypted image data that has not been received, the process returns to step 666. Is received, the browsing process routine is terminated.

  As described above, according to the security camera system according to the sixth embodiment, the surveillance camera captures an image of the monitoring target area, encrypts the image data, and the inside is not tampered with the seal sticker. Therefore, crime can be prevented and privacy infringement can be surely prevented.

  In addition, only when the correct user ID and password are entered from the PC on the viewing right side to the security camera via the network and the PC on the security camera owner side, the encryption is performed from the security camera to the PC on the viewing right side. The encrypted image data is transmitted to the viewing right owner's PC via the security camera owner's PC and the network, and the encrypted image data is decrypted and viewed by the viewing right owner's PC. , Privacy violations can be reliably prevented.

  In addition, since the area where the security camera system of the present embodiment is introduced spreads within the country, a great effect can be obtained from the viewpoint of homeland security. US homeland security experts point out that in securing homeland security, it is critically important that the public has a high level of interest in the surroundings from the perspective of local security. . According to the security camera system of the present embodiment, citizens with such a high public awareness can be effectively helped by information technology.

  From the viewpoint of the quality and density of information, the enormous amount of images taken and stored in each installed household or each installed store is an image taken in front of the house or the store using a low-quality camera. Compared with other information stored in the same PC, the value and density as information are considered to be extremely low. Even if a large number of images taken in front of the house or store are leaked from a PC in a certain installed household or store through the Internet, the image is taken on the road in front of the house or store. It is thought that it is small value information because it is only passing cars and walking people.

  In addition, this system is usually "useless long" at first glance, so if the security camera owner does not care about this system to some extent, it will be left for months with it turned off Has been reported to tend to occur. Therefore, in the above embodiment, when the security camera system is introduced in cooperation with each household or store belonging to the neighborhood association or the like, the operating status of each household or store may be monitored mutually. Thereby, it can be expected that each household or each store has an increased sense of responsibility as a member of the “security guard”, and the operating status of the security camera system according to the present embodiment is improved.

  In addition, in the event of a violent crime involving human life such as kidnapping, security camera owners across Japan may be willing to cooperate.In this case, each security camera owner must In response to the request, all information obtained in the time zone may be provided via the Internet. As a result, the criminal can be tracked in real time in a relay manner from the crime scene to the hideout. Rescue of kidnapped victims is also a reality. In order to enable real-time access to the PCs of security camera owners by these investigative agencies, the social system including the legal system in which the importance of cases is individually judged by the court, It is considered that both the software that can finely set the access right to each PC of the camera owner in accordance with the intention of the owner are essential.

  Further, in an urgent criminal investigation involving human lives, the investigation organization may directly access each PC of the security camera owner via the Internet line so that the encrypted image data can be obtained instantly. In this case, since it is very difficult to automatically track a specific person or vehicle with current software technology, a large number of police officers use human naval tactics to move a specific person or vehicle toward a terminal connected to the Internet. Just keep track. At that time, the tracking staff does not necessarily have to be gathered in one place, and a plurality of operation centers distributed throughout the country may cooperate to track a specific person or vehicle.

  Specifically, the following may be performed. First of all, the grade of the incident, the area requesting cooperation, and the time zone for the information you want are posted on the homepage of the investigative agency. Moreover, information on this homepage is periodically acquired by an automatic program incorporated in PCs of security camera owners nationwide. When there is a corresponding request, each PC confirms the intention with the owner or automatically responds to the request of the investigating agency based on a predetermined condition. As a basic algorithm, an algorithm similar to the algorithm described in the patent document (Japanese Patent Laid-Open No. 2005-322219) may be used.

  In addition, when tracking a specific person or vehicle automatically, for example, out of 100 buildings in Japan, security cameras are installed at a ratio of about 1 building, and the road in front of the building is detected by the security camera. What is necessary is just to continue monitoring for 24 hours 365 days.

  Next, a seventh embodiment will be described. In addition, about the part which becomes the structure similar to 6th Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The seventh embodiment is mainly different from the sixth embodiment in that information is not leaked outside the LAN in which the security camera and the PC are connected in the installed household or the installed store. ing.

  As shown in FIG. 20, in the security camera system according to the seventh embodiment, a security camera 16, a PC 614, and a router 702 are connected by a LAN 700 provided in an installed household 12A or an installed store 12B. 702 is connected to the network 620.

  When the LAN 700 is accessed from the outside via the network 620, the following measures are taken because it becomes ineffective against wiretapping of communication.

  First, communication is encrypted by SSL, and, as in the sixth embodiment, an original protocol is adopted to implement an eavesdropping countermeasure and a time search for images using a private protocol. In addition, the TTL value in the IP header of the data packet is set to 1. By setting the TTL value in the IP header of the packet to 1, the data packet transmitted from the PC 614 or the security camera 416 is transferred within the LAN 700, but when it goes outside the router 702, the data packet Therefore, information leakage to the external network 620 can be suppressed.

  Next, an eighth embodiment will be described. In addition, about the part which becomes the structure similar to 6th Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The eighth embodiment is mainly different from the sixth embodiment in that the encrypted image data is uploaded from the PC of the security camera owner based on the grade of the case determined by the public organization. ing.

  As shown in FIG. 21, the security camera system 810 according to the eighth embodiment is provided with a case grade distribution Web server 812 capable of distributing RSS for publicity of case grades. Server 812 is connected to network 620.

  The case grade is determined by the public institution, and the RSS that distributes the case grade includes an authentication issued by the public institution. Each security camera owner sets in advance in the PC 614 what grade of incident the extent of the encrypted image data is to be provided to the viewing right holder such as the police.

  In addition, the security camera owner performs user registration with the case grade distribution Web server 812 via the PC 614. As a result, access from the PC 614 to the case grade distribution Web server 812 is permitted by user authentication.

  When there is an incident, the police and the public institution negotiate to determine the incident grade by the public institution, and the incident information including the determined incident grade is obtained from the incident grade distribution Web server 812. , And delivered to PC 614 of the security camera owner in the area by RSS. Note that user registration information is used to identify the corresponding area. RSS is described in XML. In addition, a unique tag that is set so that a user in a specific area can receive a feed is embedded in RSS. The RSS that is distributed includes content corresponding to a grade certificate.

  As shown in FIG. 22, a file server 818 is provided on the viewing right side (for example, the police side) of the security camera system 810, and the encrypted image data is uploaded from the PC 614 to the file server 818. .

  The security camera owner cannot view the image captured by the security camera 416. Therefore, when RSS is distributed, the encrypted image data file corresponding to the date and time indicated in the grade certificate is stored. , Upload from the PC 614 to the file server 818. In uploading, communication protected by SSL is used.

  When the encrypted image data is uploaded to the file server 818, the encrypted image data is decrypted based on the decryption key possessed by the police who is the viewing right holder, and the image data is viewed by the police. Is done.

  In this way, only the necessary encrypted image data can be obtained by uploading the encrypted image data from the security camera owner's PC to the file server based on the grade of the case determined by the public agency. Is provided to the viewing right holder via the network.

  In addition, the security camera system according to the present embodiment can cope with various incidents such as kidnapping of children and tracking of elderly people with dementia.

  Next, a ninth embodiment will be described. In addition, about the part which becomes the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the ninth embodiment, the encrypted image data generated by the security camera is recorded on the memory card in the security camera, and the encrypted image data is transmitted to the viewing right person's PC via the memory card. Is different from the first embodiment.

  As shown in FIG. 23, a security camera system 910 according to the ninth embodiment includes a security camera 916 provided in each of a plurality of installation households 12A on the security camera owner side and each of a plurality of installation stores 12B. And a PC 18 provided on the viewing right holder side.

  The security camera 916 includes an imaging system 20, an analog data processing unit 22, a digital data processing unit 24, a non-volatile memory 26, and a memory card 930 that stores encrypted image data.

  The memory card 930 is configured to be attachable to and detachable from the security camera 916, and is configured from an SD card having a storage capacity of 2 GB, for example. For example, when the size per image is set to about 5 kB, about 200000 image data are stored in the 2 GB memory card 930. Note that the memory card 930 is not limited to an SD card, and may be a detachable 1-inch HDD, for example.

  When the security camera owner passes the memory card 930 storing the encrypted image data to the viewing right holder, the viewing right owner can decrypt the encrypted image data and use it for crime investigation and the like.

  The image data captured by the imaging system 20 of the security camera 916 is encrypted only when the difference between the preceding and subsequent image data exceeds a threshold, that is, only when a large change is detected in the image, Is stored in the memory card 930 in the form of part of the file name. In a typical example, tens of thousands of images are stored per day. For example, it is possible to store images for about 10 days with a 2 GB memory card 930. Note that when the security camera 916 is operated in a place where there is a lot of traffic or where the patrol frequency is low, a plurality of memory cards 930 or a large-capacity memory (such as an HDD) may be used.

  Moreover, the seal sticker 30 is stuck on the surface of the security camera 916 as in the first embodiment.

  Next, the operation of the security camera system 910 according to the ninth embodiment will be described. First, the security camera 916 captures an image of the monitoring target area by the imaging system 20, acquires analog image data, performs various analog data processing on the analog image data, and converts the analog image data into digital image data. To do. Various digital data processing is performed on the digital image data. Here, the difference between the previous and next digital image data is calculated, and if the difference exceeds the threshold, the digital image data is encrypted based on the encryption key to generate encrypted image data. . On the other hand, if the difference between the previous and next digital image data does not exceed the threshold value, the digital image data is discarded without being encrypted. Then, a file name is added to the generated encrypted image data and stored in the memory card 930.

  When the viewing right holder requests the security camera owner to provide an image, the memory card 930 storing the encrypted image data is transferred to the viewing right holder.

  Next, the viewing right person sets the delivered memory card 930 in the PC 18 on the viewing right side. Then, the PC 18 retrieves and obtains the encrypted image data file of the desired date and time from the set memory card 930, and uses the obtained encrypted image data file as a decryption key. Based on this, the decoding process is performed. The decoded image data is recorded on the HDD 38 and the decoded image data is displayed on the monitor 36.

  As described above, according to the security camera system according to the ninth embodiment, the encryption is performed by the memory card storing the encrypted image data from the security camera owner side PC to the viewing right side PC. Since the encrypted image data is provided and the encrypted image data stored in the memory card is decrypted and browsed by the PC on the viewing right side, privacy infringement can be reliably prevented.

  In addition, you may comprise so that password authentication may be performed with a security camera. In this case, the correct user ID and password are stored in the security camera, and the encrypted image data is taken out by the memory card only when the correct user ID and password are input by operating the operation unit of the security camera. What should I do?

  Next, a tenth embodiment will be described. In addition, about the part which becomes the structure similar to 9th Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The tenth embodiment is different from the ninth embodiment mainly in that a security camera is installed in a vending machine.

  As shown in FIG. 24, a security camera system 1010 according to the tenth embodiment includes a plurality of vending machines 1050 and a plurality of security cameras 916 attached to each of the vending machines 1050.

  The beverage sales company that is the owner of the security camera system 1010 periodically visits the vending machine 1050 to replenish beverages and collect cash. At that time, the memory card 930 is replaced and collected. The memory card 930 is a beverage sales company and is strictly stored for about one month. When there is an image provision request from a viewing authority such as the police to a beverage sales company, it is determined whether or not to provide an image after careful discussion.

  Next, an eleventh embodiment will be described. Note that parts having the same configurations as those of the ninth embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the security camera system according to the eleventh embodiment, the function of the security camera 916 is mounted on the mobile phone. In the form phone, encrypted image data is stored in an area that cannot be browsed unless the right of viewing is authenticated. Further, the encrypted image data is provided only to the authentication system of the viewing right person (for example, police) by the IC card function of the mobile phone, and can be browsed.

  The user of the mobile phone always hangs the mobile phone from the neck so that the front of his / her eyes is photographed by the mobile phone. In addition, you may make it take a picture of the personal surroundings automatically with a mobile phone, and you may make it image | photograph at a fixed time interval. Also, sound may be recorded at the same time.

  When a mobile phone user is involved in an incident, the captured image is browsed by the police authentication system.

  Further, the seal sticker 30 is attached to the surface of the mobile phone as in the first embodiment.

  Next, a twelfth embodiment will be described. Note that parts having the same configurations as those of the ninth embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the twelfth embodiment, the function of the security camera 916 is mounted on the in-vehicle system. The in-vehicle system stores GPS position information and time information in the memory card 930 and also stores encrypted image data in the memory card 930.

  Moreover, the sealing seal | sticker 30 is stuck on the surface similarly to 1st Embodiment by the vehicle-mounted system.

  The in-vehicle system is connected online with a system such as the police or the like through a network such as the Internet. When an image transmission request is sent online from a viewing right holder such as the police, the in-vehicle system causes the owner to select whether or not to respond if the system corresponds to the requested content. When the owner selects to respond to the image transmission request, the encrypted image data stored in the memory card 930 is provided to the viewing right person online.

  Note that a condition for responding to a transmission request by the owner may be set in advance for the in-vehicle system, and the in-vehicle system may automatically respond to an image transmission request from the viewing right holder.

It is the schematic which shows the structure of the security camera system which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the security camera system which concerns on the 1st Embodiment of this invention. (A) The figure which shows the security camera before seal sealing, (B) The figure which shows the security camera after seal sealing, and (C) The figure which shows the security camera in the state where the seal was destroyed after the seal sealing. is there. (A) It is a block diagram which shows the structure of the camera encryption process part in a digital data process part, (B) The block diagram which shows the structure of the decryption process part in the image browsing software. It is a flowchart which shows the content of the imaging process routine in the security camera which concerns on 1st Embodiment. It is a flowchart which shows the content of the data output processing routine in PC of the security camera owner side which concerns on 1st Embodiment. It is a flowchart which shows the content of the browsing process routine in PC of the viewing-right holder side which concerns on 1st Embodiment. It is a flowchart which shows the content of the encryption key setting process routine in the security camera which concerns on 2nd Embodiment. It is a flowchart which shows the content of the decompression | decompression process routine in PC of the browsing-rights owner side which concerns on 2nd Embodiment. It is a flowchart which shows the content of the encryption key setting process routine in the security camera which concerns on 3rd Embodiment. It is a block diagram which shows the structure of the security camera system which concerns on 4th Embodiment. It is a flowchart which shows the content of the encryption key password setting process routine in the security camera which concerns on 4th Embodiment. It is a flowchart which shows the content of the imaging process routine in the security camera which concerns on 4th Embodiment. It is a flowchart which shows the content of the data output process routine in the security camera which concerns on 4th Embodiment. It is a block diagram which shows the structure of the security camera system which concerns on the 5th Embodiment of this invention. It is a block diagram which shows the structure of the security camera system which concerns on the 6th Embodiment of this invention. It is a figure which shows the flow of the communication procedure between a security camera and PC of the security camera owner side. It is a flowchart which shows the content of the data transmission process routine in the security camera which concerns on 6th Embodiment. It is a flowchart which shows the content of the browsing process routine in PC of the viewing-right holder side which concerns on 6th Embodiment. It is the schematic which shows the structure of the security camera system which concerns on 7th Embodiment. It is the schematic which shows the structure of the security camera system which concerns on 8th Embodiment. It is an image figure which shows a mode that encryption image data is uploaded to a file server from PC of the security camera owner side. It is the schematic which shows the structure of the security camera system which concerns on 9th Embodiment. It is the schematic which shows the structure of the security camera system which concerns on 10th Embodiment.

Explanation of symbols

10, 410, 510, 610, 810, 910, 1010 Security camera system 12A installation household 12B installation store 14, 18, 614, 618 PC
16, 416, 516, 916 Security camera 20 Imaging system 22 Analog data processing unit 24, 424, 525 Digital data processing unit 26 Monitor 26, 426 Non-volatile memory 28A, 28B, 428B Reset button 30 Seal seal 32, 36 Monitor 34, 38 HDD
40 Encryption processing unit 50 Decryption processing unit 514, 520 Video tape recorder 522 Video capture unit 534 Video tape 540 Analog image signal generation unit 620 Network 632, 636 Network interface 812 Incident grade distribution Web server 818 File server 930 Memory card

Claims (2)

An imaging means for imaging the monitoring target area ;
Output means for encrypting and outputting the image data captured by the imaging means based on an encryption key ;
Control means for changing the encryption key in accordance with the identification code and controlling the photographing means so that photographing can be performed, triggered by the input of the identification code on the viewer right side only once , and while being adhered to the surface so as to seal the portion to be opened when tampering inside, and an imaging device that includes a sealing member which is or destroyed plastically deformed by the tension when it is peeled off,
The storage means for storing the image data output by the photographing device, and the output of the image data stored in the storage means are limited, only when specific restriction release information on the viewing right side is input, An information processing apparatus including output limiting means for outputting the image data stored in the storage means;
Depending on the identification code of the reading right side, generation means for generating a decryption key corresponding to the encryption key which is changed according to the identification code,
Displaying the image data output by the information processing device based on the decryption key generated by the generation unit, and the image data decrypted by the decryption unit A browsing device including a display means;
Image browsing system including Wherein the surface of the sealing member, the sealing who sealed by sealing member, viewing holders, and image viewing system according to claim 1, wherein at least one printed seals years have the right to view the image data.

Images