WO2008025824A1 - Method for secured transmission of digital information by means of optical information - Google Patents

Method for secured transmission of digital information by means of optical information Download PDF

Info

Publication number
WO2008025824A1
WO2008025824A1 PCT/EP2007/059059 EP2007059059W WO2008025824A1 WO 2008025824 A1 WO2008025824 A1 WO 2008025824A1 EP 2007059059 W EP2007059059 W EP 2007059059W WO 2008025824 A1 WO2008025824 A1 WO 2008025824A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
information
bi
image information
characterized
pc
Prior art date
Application number
PCT/EP2007/059059
Other languages
German (de)
French (fr)
Inventor
Hans-Peter Huth
Andreas KIRSTÄDTER
Manfred Schäfer
Original Assignee
Siemens Enterprise Communications Gmbh & Co. Kg
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44Secrecy systems
    • H04N1/448Rendering the image unintelligible, e.g. scrambling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/08Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division

Abstract

The digital information (i) is converted into image information (bi) representing a temporal sequence of brightness and/or colour changes by means of a conversion method (KONV), and is optically emitted as an image sequence (BF) in at least one region of an optical output device (BS). The optically emitted image information (bi) is optically recorded and converted into an electrical signal (bf) by means of optical/electrical converters (FD), and the original digital information (i) is determined from the electrical signal (bf) by means of an inverse conversion method (iKONV). In this way, digital information (i) such as login information or passwords (pw) or key information (si) can be easily and securely transmitted.

Description

description

Method for the secure transfer of digital information by an optical information

On the Internet or intranets many services or information available that require Log in with a user name and a password. A variety of different passwords and different digital and machine readable information are therefore being proposed against ¬, to be managed by a user or users for logging in to various services or information providers. Furthermore, there is no guarantee at the registration procedures that the password or Schlüsselinforma- tion is transmitted to the destination or has not intercepted or diverted by an attacker, for example by phishing attacks using fake log-in procedures or login access.

To reduce the number of different applications with different passwords and key information, different solutions are currently being developed or further developed. Possibilities are example ¬ as fingerprint sensors or electric password or key information storage and smart cards or USB-based key that enables the passwords can be easily determined. These solutions are usually host ¬ economically and financially costly. Furthermore occur usability or operating problems and it is complex and comprehensive software in the device to access the Internet or the Intranet required.

Therefore, the object underlying the invention is to improve the Log for the use of services or access a digital information such as passwords or key information, particularly with regard to operability. The object is solved by the features of claims 1, 14 and 21st

The essential aspect of the invention is that the digital information using a conversion method in a, a temporal sequence of brightness and / or color changes representing image information is converted and the image information is output optically in at least one area of ​​an optical output device. With the aid of at least one optical sensor which optically given from ¬ image information is detected optically and converted into an electrical signal and from the electric signal, the original digital information is determined using an inverse conversion method. Conversion process for the formation of image information are, in particular modulation method, for example, we FSK method.

the image information is converted with the aid of a coding method in a transferable via transmission media encoded image information advantageous in transmission of the image information on, for example, a communication network and, after a transmission, the encoded image information is converted using an inverse coding method in the image information. Here also COMPRESSION can approximate methods such as MPEC method or object-oriented scripting languages such as JavaScript script be used as Kodie ¬ approximate methods.

The image information is advantageously formed such that it is output as a sequence of images in the optical output unit optically, wherein from one image to the color and / or color intensity and / or brightness is changed. An image can be spatially and color-segmented, or in the respective segments of the picture a separate picture can be visually displayed.

By converting the electronic information in an optical information recording and optical information and converting into the original digital information additional security is achieved in the information about ¬ averaging that would otherwise wall only complex encoding and encryption methods with considerable possible Realisierungsauf- is. The optical detection with a photo sensor and an inverse conversion module for converting the signals can be implemented in a separate reading device with little effort. An integration opti ¬ rule acquisition and the inverse conversion module for converting can be integrated into existing facilities such as a USB flash drive with little effort.

Another advantageous embodiment consists in that the sequence according to regular or irregular time periods takes place. The regular time is right abge ¬ on the refresh rate of the screen especially before ¬ geous.

Further advantageous embodiments of the invention, particularly as regards the transmission of the image information via a communication network as well as an arrangement and a reading device for performing the method according to the invention are given in the further claims.

The invention is explained in detail based on 5 drawings. show Here

1 shows a screen with a login screen, Figure 2 encoding variant for an image sequence,

Figure 3 shows an inventive optical reader, Figure 4 in a flow chart according to the invention Ver ¬ drive the,

5a shows an application of the invention with an access key and a Torapplikation and

5b shows an application of the invention with a

Access key and two Torapplikationen and Figure 5c an application with an access circuit and two read devices.

1 shows a BS screen is displayed on the login screen is displayed AF. A prerequisite for the invention is that the screen is realized by a color screen, for example by an LCD screen, wherein the screen BS represents an optical Anzeigeein ¬ direction. For the exemplary embodiment it is assumed that the login window AF is displayed as part of an Internet Brower IB. In the login window AF an image sequence BF is shown, wherein the image sequence BF may be positioned anywhere in the login window AF.

The image sequence BF according to the invention is formed by the i present a digital information, in particular binary information is converted into image information bi, which is formed by at least temporary brightness and / or dyes Ände ¬ requirements. Referring to Figure 2, the form of image information or an image sequence bi BF is exemplified. The indicated in Figure 2 colors R, G, B are related color space to a RGB, based on the three-color theory. Here, in Figure 2, the color, the color is red by R, green represents blue by G and color by b. An image B is now at least by one of the three colors

R, G, B, or constituted by any mixture of the three colors R, G, B, and an image sequence BF is formed by a sequence of images B. In order to minimize Specimen / model variations in the screens BS and color filters (brightness, gamma, color temperature) is advantageously used a differential coding by the color reproduction. Here, only the cross in red, for example from 100% to 66% deco ¬ diert is. For forming an image information, for example, bi modulation method such as FSK method may be used.

For the exemplary embodiment, it is assumed that the sequence or the forming of a new image B takes place after the same time intervals t, where the time intervals t can in principle be chosen belie- big. The time period t can ¬ example, be advantageous tuned to the refresh rate of the screen BS, thereby a very economical Reali ¬ tion a time period t is possible.

Another way to increase the number of possible Variatio ¬ NEN, the intensity or the brightness of the colors R, G, B must be varied, ie it can be used as a modulation method multilevel coding per color. Here, 2 bits for the Farble ¬ vel 0%, 33%, 66%, 100% can be used, for example, per baud. This encoding ent ¬ speaks a "Color-Keying", especially a "differential color keying", and is similar to that of the multi-frequency code (MFC) is used the multi-tone code.

In Figure 2 the three colors R, G, B are indicated by three horizontal Linen, wherein a rectangle within a time span ¬ t on one of the lines indicates that for an image forming this color R, G, B is involved B. The height of the rectangle indicates the intensity or brightness of each color R h, G, B to. An essential aspect of the invention is that any combination of the colors R, G, B and the intensity or brightness of the colors h a digital information i can be assigned - the term Bl in Figure 2 (ei) indicated. The digital information i may consist of a single binary information such as 0 or 1, or of a sequence of binary information or a bit sequence as examples 1110th

For the embodiment in a first variant is taken at ¬ that image sequence BF formed by 6 pictures Bl .. B6, wherein the image B as formed and fol ¬ constricting bit combinations or electronic information ei assigned follows - in the figure does not shown:

Bl image R and B with h (100%) = 0101

Picture B2 G and B with h (100%) = Olli

Image B3 G with h (50%), B with h (100%) = 1101 R B4 with h (100%) = 0001

B5 image R with h (100%), G with h (50%) = 0011

Picture B6 G with h (100%) = 0110

The pictures Bl .. B6 are sequentially with a time t together in a bi image information and form the image sequence BF.

According to an alternative illustrated in Figure 2, the image sequence can, for example, by only two pictures B - denoted in the figure 2 with B7 and B8 - are formed. Here ¬ at pictures B7, B8, for example, as follows are formed:

Picture B7 with R h / (50%), B with h / (50%) = 1001 B8 G and B with h / (50%) = 1110

The pictures B7 and B8 are sequentially with a time t combined into one image information bi and form to ¬ gether the image sequence BF.

According to a further alternative, the image sequence can BF even by an image - are ge ¬ forms - denoted in the figure 2 with B9. The picture B9 is hereby gebil- det by G h and B h / 2 with the associated binary information 1011 and will ¬ summarized with a period of image information bi.

For an image sequence BF all images displayed Bl to TB7 or images Bl but also the pictures B7 can be combined to TB9 to TB9, and to delineate and images can be inserted without color. This results in a picture sequence BF an up to 36-digit binary information. Since very large binary information can be represented by a sequence of BF, can thus be represented by a sequence of images also beneficial extensive key information or passwords or credentials. Another reason that an image sequence is suitable as a key Informa ¬ tions, is that by the conversion to optical signals is difficult to achieve the original information without know ¬ nis coding, since the use of different coding criteria such as different colors and different intensities or HEI ligkeit h of R, G, B, and different time periods t the coding from the code image is to be determined only with considerable effort. By repeated conversion, the digital information or a binary bit sequence is thus transmitted even safer.

A further possibility for the formation of a digital information i representing image sequence BF is to divide the image sequence BF in spatially separated segments, for example four rectangular segments, being formed in each of the segments an image and displayed on the screen BS. These sub-images are formed in accordance with the above-described method for forming images B. in particular binary - - The division into segments in a sequence of BF more information can absorb and transmit.

The method described in the foregoing represent ¬ conversion process CONV with which the digital information i is converted into image information bi. The conversion process can be realized in a CONV Kommunikaitonsnetz in a conversion module KONM in a device such as personal computer or in a server.

The image sequences BF can for transmission via, for example, via the Internet using coding method KV according to the Graphics Interchange Format GIF with up to 256 different colors per image or according Portable Network Graphics particularly at Inter browsers IB - generated graphics format for Rastergra ¬ fiken and displayed on the screen BS become. advertising formed the - alter- natively the image sequence FB by another encoding method KODV example, by a film, for example in an MPEG format, or as an object-oriented scripting language JavaScript - especially in WEB browsers. Especially with scripting languages can be übermit ¬ telnde image information bi are transmitted at a greatly reduced amount of data - for example, over the Internet. Furthermore, the amount of information to be transmitted at a frame frequency or a period of time t by a suitable choice of the algorithm for the optical code and the appropriate color resolution can be determined. The encoding information model KODV may be by a coding module KODM as a program - the name KODM tet angedeu- in FIG. 2

By implementing the present digital information i in optical signals or in an image B on a screen BS, there will be a simple to realize optical display and again recording the digital information i. This means that the invention is used particularly advantageously in registration information model, where information such as a key or a key information or passwords used or transmitted and displayed visually on the screen BS. A binary Locks ¬ doubted information and using the invention will be further encodes "optical" in this case.

A according to the invention shown in an image sequence BF information i and to detect an optical output image information bi is, according to the invention with a pre-interpret ¬ tes in Figure 3 optical reader LG provided. The optical reader LG is essentially formed by a control unit ST that a Fotodi- ode FD or a photo diode array, and a computer interface ¬ site with an optical / electrical converter, for example, such as a USB interface, USB, is connected. In the control unit ST, an inverse conversion module ¬ iKONM is integrated in the inverse conversion method iKONV to the invention is realized, for example.

With the aid of the reading device, the optically LG output from the screen image sequence BS BF is optically detected, converted into an electrical signal bf and this is forwarded to the control unit ST - in Figure 3 by indicated by BF and bf referenced arrows. In an image sequence BF with two or more spatial segments an optical / electrical converter or a photodiode FD or a photodiode array is provided for each segment - not shown. The electrical, optical transducers are to detect as many colors and color mixtures which have good color selectivity. Instead of the photodiodes and photo transistors or CCD can 's or charge-coupled devices comparable applies. Furthermore, for each to be recognized color - red in the embodiment, green, blue - to provide a photodiode FD or a phototransistor with a corresponding color filter. These can be combined in an array.

In the control unit ST, the electric signals is bf back into the original digital information i such as a Anmeldein- formation or key information si transformed using the inverse convergence ¬ tierungsroutine iKONV by, for example corresponding demodulation - indicated i in Figure 3 by the label.

If the image information bi via, for example a communication network such as the Internet or an intranet transmission, so encoding method KODV be advantageously employed bi implemented with the aid of the image information in a form suitable for transmission encoded image information bi. As already explained, this can be, for example MPEG formats, or object-oriented scripting language such as JavaScript. Accordingly, the inverse coding methods are applied after the transfer iKONV to bi winning the image information again. both methods, the inverse conversion method iKONV and the inverse coding method iKODV in the control unit ST are advantageous in the reader LG combined - in the figure by the additional designation (iKODV) indicated. Since the image sequence BF several, in each case a period of time t optically output images B comprises the optical reader LG must be synchronized in this period of time t. If the time t at the frame rate of the screen BiId- BS tuned, so this is dominant in the optical signal or in the image sequence and a corresponding BF Phasenre ¬ gelkreis can easily thereon a ¬ rest in the control unit ST. This phase-locked loop may ¬ rate at a frequency of 100 Hz is very simple and is thus realized economically at a Bitwiederhol - for example as a digital PLL (Phase Locked Loop) or with oversampling. A particularly advantageous possibility is t the time or simply filter out the image ¬ repetition of the entire brightness signal, for example by a tunable, narrow-band filter, since a more extensive inde ¬ dependence on the used screen BS is achieved.

In the control unit ST, which is realized for example by a Prozes ¬ sorsystem, a memory SP is provided for storing the recovered digital information i as key information si or passwords pw, wherein the memory of the processor system preferably suitable.

In the following the invention is explained in detail with reference to an application in the Internet IN, it being assumed that the reader LG with a personal computer PC - indicated in Figure 3 by a designated PC arrow - can be connected via the USB interface, wherein the Perso ¬ communicates nalcomputer PC to the Internet iN and transmitted by the Internet iN digital information i on a

BS screen of the personal computer are visualized using the method according to the invention.

For the example illustrated in Figure 4 flow chart is provided in a first of seven steps 1) .. 7) that

1) an Internet user on the screen in the Internet browser BS selects a page. 2) the selected page contains a login dialog and a log-on procedure, wherein a credential al BF image sequence is represented on the screen BS in a login window AF.

To this end, several variants are possible:

a) The information displayed with the image sequence BF i "unprotected" and corresponds to a conventional WEB page. b) The note with the image sequence BF information i is digitally signed by a service provider and is open ¬ protects against attacks such as replay attacks (for example, realized by timestamps that is with signed or via a challenge and response protocol that is triggered by the image sequence BF) c) the note with the image sequence BF information i is encrypted (for example, with a "pre shared key," the known only with a key or a group of keys). This also customer relationships (e-banking) or Member's access can be protected, their offers are intended only for a closed user group.

3) The user takes the image sequence BF with the reader LG and ensures that the reading device can detect the image sequence LG BF optically. This can for example take place in that the reader LG is held close to the optically represented on the screen BS or in the Internet browser in the login window AF image sequence BF.

4) Using an optical / electric methods transducer or an optical sensor FD and the inverse conversion process IKONV and inverse coding method iKODV is in the reader LG the image sequence in the digital BF

Information i walked. With the aid of the determined digital information a i key information is in memory SP by a corresponding password PW or wanted - see Figure 3. In this case, is associated in the memory SP of the digital information stored i pw a password or key information si.

5) The reader LG sends the found in the memory SP pass ¬ word pw or the key information si via the USB interface USB secured to the personal computer PC. The security for the transmission can for example be increased in that the reading device LG, for example, an LED (Light Emitting Diode) for optical transmission to the personal computer PC has ¬ - not shown. The LED is used for example in a small, light-tight tubes, to which a connector is mounted on the personal computer PC is connected to the reader LG. The password pw or the key information si is transferred only if the reader LG is inserted with the tube into the personal computer ¬ PC. This ensures that the password pw or the key information si on a possible stray light from the reader LG out is visible bar is avoided.

6) Subsequently, entered the detected from the memory SP Pass ¬ word PW or the key information si in the designated area of the web browser, and transmitted to the Internet IN, whereby the logon procedure or the login dialog on the Internet IN is continued.

7) An additional rights management allows flexible use and portability - for example for DRM applications, devices and facilities, use of a "token rights" as key.

In the sixth step 6) different variants for transferring password PW in a dedicated area of the web browser are possible: a) In the personal computer PC, a program is realized with the aid pw which via the USB interface USB übertra ¬ gene password or read the key information si and registered in the designated area of ​​the Internet browser, b) implements the USB interface of the reader LG is a

Keyboard interface and the reader LG can enter the password pw instead of the keyboard or typing. This interface can also advantageously through a USB interface USB - realized or through a wireless interface such as Bluetooth, with special drivers are not required for this - as already described.

If the reader is LG, for example, associated with an internet-enabled television set, then the infrared interface used for the Fernbedie ¬ voltage of the TV as a physical Realisie ¬ tion of an interface between the reader LG and the TV. In a Reali ¬ tion of the interface via the keyboard interface in the cable between the keypad and a terminal, an additional connector for connecting can be inserted to the reader. A further advantageous realization of a section ¬ interface between the reader and a terminal LG is the fact that existing wireless interfaces as Bluetooth or IRDA ¬ play example for the transmission of passwords or pw key information si be used.

The password pw, for example, to a the Anmeldeproze ¬ Major controlling application AP or Torapplikation TA in, for example, to the personal computer PC or on a server on the Internet IN are transmitted.

In Figure 5a a Torapplikation TA is illustrated with the aid of an access to another application - not shown - is prepared, wherein a Torapplikation TA can be an application portal for further applications. Here, an optical transmitter So-TA Torapplikation the TA is associated, which is realized for example on a screen of a device BS and generates the image sequence BF. In the optical reader LG, however, an optical receiver Eo-LG, such as an optical / for electrical converter or a photodiode FD or photo is for acquiring the image sequence BF diode array for detecting a plurality of colors, and an interface SS-LG, no optical interface for

Transmission of passwords or pw key information si to Torapplikation TA and vice versa arranged, including in the Torapplikation a Ta is similarly realized interface SS-TA provided.

A Torapplikation TA may alternatively be a television TV with a return channel - for example, via the telephone network - or a local interface - such as a VCR or set-top box - to be. In principle, a Torappli- cation TA also offer several different image sequences BF, for example, in a menu, the user can select an appropriate image sequence with a reader LG and then automatically execute with the reader LG the authentication process.

The reader LG has to increase access security, the possibility of key information si via secure method to expand and transmitted.

A variant of the extension of access security is to get a Torapplikation TA as part of an Internet access on personal computer PC after authentication and authorization key sequence for another Torapplikation TA on a further terminal, such as another personal computer PC or a television set TV.

For example, as shown in Figure 5b, a user already explained in figure 5a, with a reader LG an access key zs from the Torapplikation TA in Internet-connected personal computer PC - indicated in Figure 5b by the designation TA-PC - refer. This passkey zs is stored in the memory SP of the reader LG and for example, the access key zs for one or more program broadcasts on a television set TV. According to the invention to log on screen BS of the television set TV again as illustrated in Figure 5a, an image sequence BF optical output or displayed and visually recognized by the reader LG and converted into a key information si, the key information si represents an access key zs.

In the reader LG then is the stored in the memory SP access key zs - see Figure 3 - is determined and via the interface SS-LG and the similar ausges ¬ taltete interface SS-TA of the television set TV to a gate ¬ application TA in the television TV - indicated in the figure 5b with the designation TA-TV - transmitted. With the help of Torapplikation TA-TV program items can be enabled or disabled on the television TV, that is, only with a key to ¬ gear zs Program Guide Programs can be reproduced on the television TV. Consequently, is / are connected in a free / a plurality of program broadcasts by transmitting the key information si and the access key zs. This allows certain program broadcast are enabled for their children to TV sets TV with a Torapplikation TA-TV parental example.

This feature of the invention may for example also for enrollment key zs for buildings such as apartments or

Hotels or even to mobile devices such as automobiles or mobile phones, or even to services or databases in communications networks such as the Internet USAGE be ¬ det.

According to another variant of the invention, PC and a Torapplikation TA-TV two readers LGL, LG2 can at a 5b as illustrated in FIG configuration with a Torapplikation TA-PC in a personal computer in a television set TV are used - see Figure 5c. Here, the access key zs the stored first reader LG passkey is zs example ¬ wireless manner or transferred to a second reader LG2 via personal computer PC. With the aid of the second reader LG2, as shown in Figure 5b erläu ¬ tert, the entry key zs to as TV TV übertra ¬ gene. Based on the in Figure 5b described example, therefore, the access key zs from the first reader LGL of parents to the second reader LG2 transmitted. With access key zs the intended or permitted by the parents program broadcasts be enabled on the TV channels.

The invention is not limited to the embodiment but can be used in all applications where passwords pw or key information si the easiest and most secure way for an application or access, including time-limited access to buildings such as apartment, hotel, company or mobile devices such as entertainment devices or equipment companies or access their services are used for communication networks and. Here, the image sequence used BF and ver ¬ turned key information si and the passwords pw must be matched to the respective application.

Claims

claims
1. A method of transmitting a digital information
(Ei), - in which the digital information (i) using a
Conversion process (CONV) in a, a temporal sequence of brightness and / or color changes representing image information (bi) is converted, in which the image information (bi) in at least a portion of an optical output means optically output (BS), and
- in which by means of at least one optical / electrical converter (FD) the output optical image information (bi) and optically detected into an electrical signal (bf) is converted will, and
- in which from the electrical signal (bf) using an inverse conversion method (iKONV) the original digital information (i) is determined.
2. The method according to claim 1, characterized in that
- that the image information (BI) by means of a coding method ¬ (KODV) in a transmissible via transmission media encoded image information (bi) is converted, and
- that, after a transmission, the encoded image information (BI) by means of inverse coding method (iKODV) in the image information (bi) is converted.
3. The method of claim 1 or 2, characterized in that the image information (bi) is formed such that (BF) in the optical output unit (BS) is optically output it as an image sequence, said image (B) to image (B ) the color and / or color intensity and / or brightness is changed.
4. The method according to claim 3, characterized in that the image information (bi) is formed such that an image (B) is spatially and color-segmented.
Is taking place, or 5. The method according to claim 3 or 4, characterized in that the sequence of images (B) by regular or irregular time intervals (t) on the Bildwie ¬ derholfrequenz a as an optical output device (BS) realized screen (BS) tuned.
6. The method according to any one of the preceding claims, characterized in that the conversion procedure (CONV) to the optical How-dergabe the electrical information (ei) to a as an optical output device (BS) realized screen (BS), and the inverse conversion method (iKONV) to the conversion of optically detected image sequence (BF) in a digital information (i) are matched, and / or that, as a conversion process (CONV) to the generation of image information (bi) tuned modulation method and as an inverse conversion process (iKONV) Demodulationsverfah- ren provided are.
7. The method according to any one of claims 1 to 6, characterized in that in the conversion process (CONV, iKONV) provided colors are related to a color space on the three-color theory, with the colors red (R), green (G) and blue (B) is based.
8. The method according to any one of the preceding claims, characterized in that on an optical output device (BS) is optically outputted image information (bi) is detected by at least one photo ¬ diode (FD), or at least a phototransistor and an electric signal (bf) converted is, and that means of inverse coding method (iKONV) the original digit old information (i) is determined.
9. The method according to claim 8, characterized in that each color optical output of the image information is detected by a photodiode (FD) or a phototransistor with a corresponding color filter.
10. The method according to any one of the preceding claims, characterized in that
- that the digital information (i) using an approximation method Konvertie ¬ (CONV) and a coding method (KODv) is converted and stored in a coded image information (bi) in a communica tion network ¬ (IN),
- (bi) by the coded image information with the
Communication network (IN) connectable to means (PC) obtained, by means of inverse coding method (iKOD) in the image information (bi) and converted to an image ¬ screen (BS) of the device (PC) is visually outputted, or
- that in a communication network (IN) stored digital information can be connected (i) from one to the communication network (IN) a means (PC) is fetched, and
- that in the device (BC) the digital information (i) using a conversion process (CONV) into image information (bi) and converted to its screen (BS) is optically outputted.
is 11. A method according to any one of the preceding claims, characterized in that the digital information (i) tion by a Anmeldeinforma-, a key information (si) or at least one password (PW) represents.
12. The method according to claim 11, characterized in that after the determination of a key information (si) or at least one password (pw) such as an access key
(Sz) is transmitted in the sense of an authorized access to a means (PC) or access means, through which the access to the means (PC) or functions of the input device (PC) to buildings or parts thereof or to communications networks (IN) or parts of communication networks (iN) or to services or only databases in communication networks (iN) is controlled.
13. The method according to claim 12, characterized in that in a means (PC) with the aid of a Torapplikation (TA) of the access to at least one other device (TV) or its functions is controlled by the fact that by a Torapplikation (TA) for the access to another device (TV), a credential, a password word (PW), or key information (si) is determined.
14. Arrangement for carrying out the transfer of a digitalized len information according to any one of claims 1 to 13,
- a conversion module (KONM) for converting the digital information (i) in a group represented by a time sequence of brightness and / or color changes image information (bi), - with an optical output device (BS) to the optical output of the image information (bi) in at least a portion of the optical output means (BS), with at least one optical / electrical converter (FD) for optically detecting the optical output Bildinforma- tion (bi) and for converting into an electrical signal (bf), and
- with an inverse conversion module (iKONM) for Ermit ¬ stuffs the original digital information (i) from the electric signal (bf).
15. An arrangement according to claim 14, characterized in that
- that a coding module (KODM) for the conversion of
Image information (bi) in a transmissible via transmission media encoded image information (bi), and - an inverse conversion module (iKODM) for inverse Kon ¬ set conversion of the coded image information (bi) in the image information (bi) is provided.
16. An arrangement according to claim 14 or 15, characterized in that
- that the conversion module (KONM) and the coding module
(KODM) in a communication network (IN) are realized and a memory for retrieval of the stored coded image information (bi) through a communication network with (IN) connectable to means (PC) is provided, and
- that in the device (PC), a screen (BS) of the optical output of the retrieved image information (BI) is provided, or
- that in a communication network (IN), a memory for retrieval of stored digital information (i) through the communication network (IN) connectable to means (PC) is provided, and
- that in the device (PC) the conversion module (KONM), and the encoding module (KODM) is realized and that a screen (BS) of the optical output of the retrieved image information (bi) is provided.
17. The arrangement according to one of claims 14 to 16, characterized in that
- in that the at least one configured as an optical / electronic converter optical sensor (FD) and the inverse convergence tierungsmodul (icon) in a reader (LG) is arranged,
- that in the reading device (LG), a memory (SP) for the spoke ¬ tion of the determined digital information (i) is provided, and - in that a wireless and / or a wired interface ¬ (USB, SS-LG) (PC) is provided for connection to a Einrich ¬ device (PC, TV) and for transmitting the determined electronic information (ei) to the device (PC, TV).
18. An arrangement according to one of claim 14 to 17, characterized in that the digital information (i) through a registration Informa ¬ tion, a key information (si) or a password (pw) is represented.
19. The arrangement according to one of claims 14 to 18, characterized in that the device (PC, TV) with a Torapplikation (TA) for access to the device (PC, TV) or to another device (PC, TV) with using the digital information transmitted, determined (i) is designed, with the device (PC, TV), access to the functions of the device, or on the establishment of access to buildings or parts of buildings or communication networks or parts of communications networks or services or only databases is controlled in the communication network.
20. The arrangement according to one of claims 14 to 19, characterized in that the wire or wireless interface (USB) of the reading device (LG) and a further reading device (LG2) is designed such that in the reading device (LGL) vomit ¬-assured, determined, digital information (i) to the other reader (LG2) are transmitted.
21. reader for carrying out the transmission of a digital information according to any one of claims 1 to 13, with at least one optical sensor (FD) optically issued for optically detecting a on an optical display device (BS), keits- a temporal sequence of brightness and / or color changes representing image information (bi) and for converting into an electrical signal (kb), and - with an inverse conversion module (iKONM) for Ermit ¬ stuffs the original digital information, (i) from the electric signal (bf) - with a memory (SP) for storing the determined digital information (i) and
- with a wireless or wired interface
(USB, SS-LG) for connection to a device (PC, TV).
22. The reader of claim 21, characterized in that the wired or wireless interface (USB, SS LG) for communicating the determined digital information (i) to a means (PC, TV) or an additional reading device (LG2) is arranged ,
23. The arrangement or reading apparatus according to any one of claims 14 to
22, characterized in that the wired interface through a USB interface (USB) or Firewire interface or a LAN interface and the wireless interface is implemented by a WLAM- interface or DECT interface or a Bluetooth interface.
24. The arrangement or reading apparatus according to any one of claims 14 to
23, characterized in that the optical / electrical converter is realized by a photodiode (FD), or by a photodiode array or a charge-coupled device (CCD), which are used for the selection of predetermined colors color filter.
25, arrangement or reading device according to any one of claims 14 to
24, characterized in that the image information (bi) by an image sequence (BF) represents is that (BS) is optically outputted in the optical output unit, said image (B) to image (B), the color and / or color intensity and / or the brightness is changed.
PCT/EP2007/059059 2006-08-31 2007-08-30 Method for secured transmission of digital information by means of optical information WO2008025824A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102006040732 2006-08-31
DE102006040732.6 2006-08-31

Publications (1)

Publication Number Publication Date
WO2008025824A1 true true WO2008025824A1 (en) 2008-03-06

Family

ID=38805405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/059059 WO2008025824A1 (en) 2006-08-31 2007-08-30 Method for secured transmission of digital information by means of optical information

Country Status (1)

Country Link
WO (1) WO2008025824A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005866A1 (en) * 1997-07-22 1999-02-04 Emelko Glenn A Television signal data transmission system
WO2001093473A2 (en) * 2000-05-31 2001-12-06 Optinetix (Israel) Ltd. Systems and methods for distributing information through broadcast media
WO2002084909A1 (en) * 2001-04-09 2002-10-24 Koplar Interactive Systems International, L.L.C. Universal methods and device for hand-held promotional opportunities
EP1521464A2 (en) * 2003-10-01 2005-04-06 Koplar Interactive Systems International, LLC Method and apparatus for modulating a video signal with data
EP1589756A2 (en) * 2004-04-02 2005-10-26 Koplar Interactive Systems International, LLC Method and system for detecting signal presence from a video signal presented on a digital display device
US20050264694A1 (en) * 2002-08-20 2005-12-01 Optinetix (Israel ) Ltd. Method and apparatus for transferring data within viewable portion of video signal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005866A1 (en) * 1997-07-22 1999-02-04 Emelko Glenn A Television signal data transmission system
WO2001093473A2 (en) * 2000-05-31 2001-12-06 Optinetix (Israel) Ltd. Systems and methods for distributing information through broadcast media
WO2002084909A1 (en) * 2001-04-09 2002-10-24 Koplar Interactive Systems International, L.L.C. Universal methods and device for hand-held promotional opportunities
US20050264694A1 (en) * 2002-08-20 2005-12-01 Optinetix (Israel ) Ltd. Method and apparatus for transferring data within viewable portion of video signal
EP1521464A2 (en) * 2003-10-01 2005-04-06 Koplar Interactive Systems International, LLC Method and apparatus for modulating a video signal with data
EP1589756A2 (en) * 2004-04-02 2005-10-26 Koplar Interactive Systems International, LLC Method and system for detecting signal presence from a video signal presented on a digital display device

Similar Documents

Publication Publication Date Title
US5805152A (en) Video presentation system
US8587680B2 (en) Communication system, transmission device and reception device
US20070106764A1 (en) System and method for device configuration using a portable flash memory storage device with an infrared transmitter
US6256390B1 (en) Device having a digital interface and a network system using such a device and a copy protection method
US7912503B2 (en) Smart interface system for mobile communications devices
US6496862B1 (en) Remote monitoring and control of devices connected to an IEEE 1394 bus via a gateway device
US20050018766A1 (en) Power-line communication based surveillance system
US20090193452A1 (en) Media content sharing over a home network
US6628326B1 (en) Wireless communication system for transmitting images from an enabled electronic camera to receiver
US20030221011A1 (en) Access control apparatus
US20050160477A1 (en) Communication system using home gateway and access server for preventing attacks to home network
US20040203590A1 (en) Set-up of wireless consumer electronics device using a learning remote control
US20100066839A1 (en) Electronic camera
US20050267972A1 (en) Lightweight remote display protocol
US20030093808A1 (en) Data sharing and linkage for IP telephony set-top boxes
US20040163125A1 (en) Systems and methods for providing television signals using a network interface device
US20040151290A1 (en) Network interface device having virtual private network capability
US20030065952A1 (en) Authentication system using device address to verify authenticity of terminal
US20080186979A1 (en) Virtual ip-based a/v inputs for universal media servers
US7180988B2 (en) Packet network interface device and systems and methods for its use
US20010046366A1 (en) System for controlling a remotely located video recording device
US20050216738A1 (en) Radio transmission device, mutual authentication method and mutual authentication program
US6523064B1 (en) Network gateway for collecting geographic data information
US20070033647A1 (en) Triple-tap password entry
US20020085023A1 (en) Display of ancillary data on local network appliance

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07803068

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

NENP Non-entry into the national phase in:

Ref country code: RU

122 Ep: pct app. not ent. europ. phase

Ref document number: 07803068

Country of ref document: EP

Kind code of ref document: A1