AT407458B - DEVICE FOR GENERATING A SIGNED IMAGE - Google Patents

DEVICE FOR GENERATING A SIGNED IMAGE Download PDF

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Publication number
AT407458B
AT407458B AT98496A AT98496A AT407458B AT 407458 B AT407458 B AT 407458B AT 98496 A AT98496 A AT 98496A AT 98496 A AT98496 A AT 98496A AT 407458 B AT407458 B AT 407458B
Authority
AT
Austria
Prior art keywords
signature
image
camera according
camera
image data
Prior art date
Application number
AT98496A
Other languages
German (de)
Other versions
ATA98496A (en
Inventor
Anette Winkler
Wolfgang Beier
Original Assignee
Sel Alcatel Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sel Alcatel Ag filed Critical Sel Alcatel Ag
Publication of ATA98496A publication Critical patent/ATA98496A/en
Application granted granted Critical
Publication of AT407458B publication Critical patent/AT407458B/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2101/00—Still video cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0077—Types of the still picture apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3204—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a user, sender, addressee, machine or electronic recording medium
    • H04N2201/3205—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a user, sender, addressee, machine or electronic recording medium of identification information, e.g. name or ID code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3226—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3233—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3273—Display
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3274—Storage or retrieval of prestored additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3278—Transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Television Signal Processing For Recording (AREA)
  • Studio Devices (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



   Die vorliegende Erfindung betrifft eine Kamera zur Aufnahme von Bildern. 



   Kameras sind allgemein bekannt und werden heute vielfältig, z. B. als Photo- oder Video- kamera, verwendet. Insbesondere bei der Dokumentation von Verkehrssituationen ist es not- wendig, eine Photokamera zur Dokumentation zu verwenden, da ein mit der Photokamera aufgenommenes Bild beweissicher ist 
Bekannt sind weiterhin Verfahren zur Verschlüsselung von Signalen oder Daten, die zu einem Empfänger übertragen werden und von dem Empfänger nur dann entschlüsselt werden können, wenn er dazu berechtigt ist und eine Entschlüsselungsvorrichtung besitzt. 



   Aus der EP-Patentschrift EP 0 157 258 ist ein Übertragungssystem bekannt, in dem aus den digitalen Daten eines Dokuments eine Unterschrift, die spezifisch ist für dieses Dokument, erzeugt wird. Das Dokument und die Unterschrift werden zu einem Empfänger übertragen, der die Gültig- keit der Unterschrift und des Dokuments überprüft. Wurden Änderungen in dem Dokument, insbesondere bei dessen Übertragung, vorgenommen, so kann das durch den Empfänger mittels der Unterschrift festgestellt werden. 



   Es ist die Aufgabe der vorliegenden Erfindung, eine Kamera anzugeben, die eine beweis- sichere Dokumentation einer Situation ermöglicht. 



   Diese Aufgabe ist durch die Lehre des Patentanspruchs 1 gelöst. Vorteilhafterweise kann ein mit der erfindungsgemässen Kamera aufgenommenes Bild mit einem von mehreren auswählbaren Verschlüsselungsverfahren mit einer Unterschrift versehen werden. 



   Weitere vorteilhafte Ausgestaltungen der Erfindung sind den abhängigen Patentansprüchen zu entnehmen. 



   Zur Verdeutlichung der Erfindung wird im folgenden ein Ausführungsbeispiel anhand der Figur beschrieben. Es zeigt die Figur ein Ausführungsbeispiel einer erfindungsgemässen Kamera. 



   Die Figur zeigt eine erfindungsgemässe Kamera, die im vorliegenden Ausführungsbeispiel eine Videokamera K ist. Die Videokamera K hat eine Bildaufnahmeeinrichtung BA zur Aufnahme von Bildern zur Dokumentation von Situationen, insbesondere von Verkehrssituationen. Am Ausgang der Bildaufnahmeeinrichtung BA liegt ein analoges Bildsignal vor, das von einem A/D-Wandler AD in digitale Bilddaten gewandelt wird. Die digitalen Bilddaten werden einem Signatur-Generator SG zugeführt. Der Signatur-Generator SG ist mit einem Steuermittel SM, einem ersten Speicher VSP und einer Eingabe-Einheit KL verbunden. 



   In dem ersten Speicher VSP sind verschiedene Programmodule abgespeichert, die jeweils ein Verschlüsselungsverfahren beinhalten. Mit dem jeweiligen Verschlüsselungsverfahren werden die digitalen Bilddaten durch den Signatur-Generator SG verschlüsselt und damit das entsprechende Bild mit einer Unterschrift versehen. 



   Diese Unterschrift ist spezifisch für dieses Bild und jede Änderung des Bildes zieht eine Änderung der Unterschrift nach sich, die auf einfache Weise detektiert werden kann. Ein solches Verschlüsselungsverfahren kann beispielsweise das in der EP-Patentschrift EP 0 157 258 beschriebene Verfahren sein. 



   Die Eingabe-Einheit KL ermöglicht einem Benutzer der Videokamera K die Vorgabe des Verschlüsselungsverfahrens zur Erzeugung der Unterschrift. Die Eingabe-Einheit KL kann eine Tastatur oder eine sonstige, geeignete Eingabe-Einheit sein. Im vorliegenden Ausführungsbeispiel ist die Eingabe-Einheit KL ein Chipkartenleser. Der Benutzer der Videokamera K verwendet eine Chipkarte, um sich gegenüber der Videokamera K als berechtigter Benutzer zu authentifizieren. 



  Auf dieser Chipkarte ist weiterhin eine Information für die Videokamera enthalten, mit der das Verschlüsselungsverfahren ausgewählt wird. Der Chipkartenleser KL liest diese Information aus und das Steuermittel SM steuert die Auswahl des der Information entsprechenden Programmoduls im ersten Speicher VSP. Das Steuermittel SM steuert die Erzeugung der Unterschrift mittels des dem ausgewählten Verschlüsselungsverfahren entsprechenden Programmoduls für das aufgenom- mene Bild durch den Signatur-Generator SG. Es ist auch möglich, dass auf der Chipkarte die Information enthalten ist, die Bilddaten nicht mit der Unterschrift zu versehen. In diesem Fall werden die Bilddaten im Signatur-Generator SG nicht verschlüsselt. 



   Die Bilddaten und die spezifische Unterschrift werden in einem zweiten Speicher BSP abge- speichert, der mit dem Signatur-Generator SG verbunden ist, und einer Vorrichtung zur Ausgabe des Bildes AM zugeführt, die mit dem zweiten Speicher BSP verbunden ist. Die Vorrichtung zur Ausgabe des Bildes AM gibt die Bilddaten und die Unterschrift aus der Videokamera beispiels- 

 <Desc/Clms Page number 2> 

 weise zur Ubertragung in ein Kommunikationsnetz oder auf einen Bildschirm oder in einen weiteren Speicher aus. 



   Die digitalen Bilddaten können vor dem Abspeichern in dem zweiten Speicher BSP komprimiert werden, um damit weniger Speicherplatz zu belegen. Gleiches kann mit der spezifischen Unter- schrift durchgeführt werden. 



   Um einen unbemerkten Zugang eines unberechtigten Benutzers zu der Videokamera zu vermeiden, ist die Videokamera K vorteilhafterweise versiegelt. 



   PATENTANSPRÜCHE : 
1. Kamera (K) zur Aufnahme eines Bildes, dadurch gekennzeichnet, dass sie mit einem an sich bekannten Signatur-Generator (SG), welcher das aufgenommene Bild mit einer Unter- schrift versieht, welche für dieses Bild spezifisch ist, verbunden ist, dass der Signatur- 
Generator (SG) mit einer Einheit zur Steuerung des Signatur-Generators (SM) und mit einem Bildspeicher (BSP) zur Speicherung des Bildes und der Unterschrift verbunden ist, an welchen Bildspeicher (BSP) eine Vorrichtung zur Ausgabe des Bildes mit der Unter- schrift (AM) angeschlossen ist.



   <Desc / Clms Page number 1>
 



   The present invention relates to a camera for taking pictures.



   Cameras are generally known and are used today in a variety of ways, e.g. B. used as a photo or video camera. In particular when documenting traffic situations, it is necessary to use a photo camera for documentation, since an image taken with the photo camera is reliable
Methods are also known for encrypting signals or data which are transmitted to a receiver and can only be decrypted by the receiver if he is authorized to do so and has a decryption device.



   A transmission system is known from EP patent specification EP 0 157 258, in which a signature that is specific to this document is generated from the digital data of a document. The document and the signature are transmitted to a recipient who checks the validity of the signature and the document. If changes have been made to the document, particularly when it is transmitted, the recipient can determine this by means of the signature.



   It is the object of the present invention to provide a camera that enables evidence-proof documentation of a situation.



   This object is achieved by the teaching of claim 1. Advantageously, an image recorded with the camera according to the invention can be provided with a signature using one of several selectable encryption methods.



   Further advantageous refinements of the invention can be found in the dependent patent claims.



   To illustrate the invention, an embodiment is described below with reference to the figure. The figure shows an exemplary embodiment of a camera according to the invention.



   The figure shows a camera according to the invention, which is a video camera K in the present exemplary embodiment. The video camera K has an image recording device BA for recording images for documenting situations, in particular traffic situations. An analog image signal is present at the output of the image recording device BA and is converted into digital image data by an A / D converter AD. The digital image data are fed to a signature generator SG. The signature generator SG is connected to a control means SM, a first memory VSP and an input unit KL.



   Various program modules are stored in the first memory VSP, each of which contains an encryption method. With the respective encryption method, the digital image data is encrypted by the signature generator SG and thus the corresponding image is provided with a signature.



   This signature is specific to this image and every change in the image results in a change in the signature which can be detected in a simple manner. Such an encryption method can be, for example, the method described in EP patent specification EP 0 157 258.



   The input unit KL enables a user of the video camera K to specify the encryption method for generating the signature. The input unit KL can be a keyboard or another suitable input unit. In the present exemplary embodiment, the input unit KL is a chip card reader. The user of the video camera K uses a chip card to authenticate himself to the video camera K as an authorized user.



  This chip card also contains information for the video camera with which the encryption method is selected. The chip card reader KL reads this information and the control means SM controls the selection of the program module corresponding to the information in the first memory VSP. The control means SM controls the generation of the signature by means of the program module corresponding to the selected encryption method for the captured image by the signature generator SG. It is also possible for the chip card to contain the information not to provide the signature with the image data. In this case, the image data in the signature generator SG are not encrypted.



   The image data and the specific signature are stored in a second memory BSP, which is connected to the signature generator SG, and fed to a device for outputting the image AM, which is connected to the second memory BSP. The device for outputting the image AM outputs the image data and the signature from the video camera, for example

 <Desc / Clms Page number 2>

 ID for transmission in a communication network or on a screen or in another memory.



   The digital image data can be compressed before being stored in the second memory BSP in order to occupy less memory space. The same can be done with the specific signature.



   In order to avoid unnoticed access by an unauthorized user to the video camera, the video camera K is advantageously sealed.



   PATENT CLAIMS:
1. Camera (K) for recording an image, characterized in that it is connected to a signature generator (SG) which is known per se and which provides the recorded image with a signature which is specific to this image the signature
Generator (SG) with a unit for controlling the signature generator (SM) and with an image memory (BSP) for storing the image and the signature is connected to which image memory (BSP) a device for outputting the image with the signature (AM) is connected.

Claims (1)

2. Kamera nach Anspruch 1, dadurch gekennzeichnet, dass zwischen der Kamera (K) und dem Signatur-Generator (SG) ein Analog/Digital-Wandler (AD) angeordnet ist, welcher das aufgenommene Bild in digitale Bilddaten wandelt und diese dem Signatur-Generator (SG) zuführt, und dass der Signatur-Generator (SG) diese digitalen Bilddaten mit der Unterschrift versieht.  2. Camera according to claim 1, characterized in that an analog / digital converter (AD) is arranged between the camera (K) and the signature generator (SG), which converts the recorded image into digital image data and this the signature Generator (SG) supplies, and that the signature generator (SG) provides this digital image data with the signature. 3. Kamera nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie einen weiteren Speicher (VSP) zur Abspeicherung von Programmodulen mit verschiedenen Verschlüsse- lungsverfahren aufweist, dass sie eine Eingabe-Einheit (KL) aufweist, mittels der eines der Verschlüsselungsverfahren auswählbar ist, und dass der Signatur-Generator (SG) das aufgenommene Bild mittels des ausgewahlten Verschlüsselungsverfahrens mit einer Unterschrift versieht.  3. Camera according to claim 1 or 2, characterized in that it has another Memory (VSP) for storing program modules with different encryption methods has that it has an input unit (KL), by means of which one of the Encryption method can be selected, and that the signature generator (SG) uses a selected encryption method to encrypt the captured image Signature provides. 4. Kamera nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass sie versiegelt ist.  4. Camera according to claim 1, 2 or 3, characterized in that it is sealed. 5. Kamera nach Anspruch 3, dadurch gekennzeichnet, dass die Eingabe-Einheit (KL) ein Chipkartenleser ist.  5. Camera according to claim 3, characterized in that the input unit (KL) Smart card reader is. 6. Kamera nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie eine Videokamera ist.  6. Camera according to one of claims 1 to 5, characterized in that it is a Video camera is. 7. Kamera nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass über die Vorrichtung zur Ausgabe des Bildes mit der Unterschrift (AM) die Bilddaten und die Unter- schrift zur Übertragung in ein Kommunikationsnetz ausgebbar sind.  7. Camera according to one of claims 1 to 6, characterized in that the Device for outputting the image with the signature (AM), the image data and the signature can be output for transmission into a communication network.
AT98496A 1995-06-10 1996-06-07 DEVICE FOR GENERATING A SIGNED IMAGE AT407458B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995121264 DE19521264C2 (en) 1995-06-10 1995-06-10 Device for generating a signed image

Publications (2)

Publication Number Publication Date
ATA98496A ATA98496A (en) 2000-07-15
AT407458B true AT407458B (en) 2001-03-26

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ID=7764135

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Application Number Title Priority Date Filing Date
AT98496A AT407458B (en) 1995-06-10 1996-06-07 DEVICE FOR GENERATING A SIGNED IMAGE

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AT (1) AT407458B (en)
DE (1) DE19521264C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19703970B4 (en) * 1997-02-03 2006-02-02 Thomas Wilke Method for collecting data and transmitting it in authentic form
DE19939879A1 (en) * 1999-08-23 2001-03-08 Christian Hogl Physical signal detection device e.g. a digital camera, has digital information store for recording detected physical signals coupled to encoding device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500056A (en) * 1984-07-16 1987-01-08 マツクフエタ−　ホ−ルデイングス　ピイ−テイ−ワイ．リミテツド Recorded information inspection system
US5136647A (en) * 1990-08-02 1992-08-04 Bell Communications Research, Inc. Method for secure time-stamping of digital documents
DE4410459A1 (en) * 1994-03-25 1995-02-16 Siemens Ag Electronic signature method in data transmission

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Publication number Publication date
DE19521264C2 (en) 2001-09-20
DE19521264A1 (en) 1996-12-12
ATA98496A (en) 2000-07-15

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