EP2810256A1

EP2810256A1 - Identification device, portable key apparatus, lock apparatus, and method for identifying a portable key apparatus

Info

Publication number: EP2810256A1
Application number: EP13702228.1A
Authority: EP
Inventors: Gael Pilard
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2012-02-02
Filing date: 2013-02-01
Publication date: 2014-12-10
Also published as: DE102012201479A1; CN104094320A; WO2013113905A1; US20150310683A1

Abstract

The invention relates to an identification device, comprising a portable key apparatus, which has a first memory apparatus for storing an associated identifier and a projector apparatus that is designed to project an optical code matrix based on the identifier as an image, and comprising a lock apparatus, which is designed to detect the image of the optical code matrix project by the projector apparatus by means of a sensor apparatus and to perform an image analysis of the detected image of the optical code matrix by means of an identification apparatus and, on the basis thereof, to identify the portable key device by comparing the identifier analyzed from the optical code matrix with identifiers stored in a second memory apparatus of the lock apparatus.

Description

Description title

Identification device, portable key device, lock device and method for identifying a portable key device

The invention relates to an identification device, a portable key device, a lock device and a method for identifying a portable

Key device.

State of the art

DE 693 32 814 T2 describes an information system for optically reading a point code which is suitable for recording and / or reproduction of so-called

Multimedia information including, for example, audio information such as voice and music information, video information obtained from a camera, a VCR or the like, and digital code data obtained from a personal computer, a word processor or the like. The information system is able to reproduce the point code that can be read optically, namely paper, different types of plastic films,

Metal foils or other films.

In DE 102 21 785 a ticket and a method for creating and controlling such and a control device for a ticket are described, wherein information that represents at least part of the ticket data is applied to a carrier. The information is encoded within a fixed in its outer dimensions, two-dimensional encryption area applied to the ticket. The encryption is designed such that the information is visually visibly readable by means of a control device, wherein the

Control device has a fixed predetermined, two-dimensional and over a predetermined time unit constant decryption area. Of the

Decryption area has substantially the same dimensions as the encryption area, to read the information of the

Decryption area is readable over the encryption area, with parts of the Encryption area and the decryption area are concurrent when superimposed.

Disclosure of the invention

The invention provides an identification device having the features of claim 1, a portable key device having the features of claim 10, a lock device having the features of claim 11 and a method of identifying a portable key device having the features of claim 12.

In claim 1 is an identification device with a portable

Key device defines which a first storage device for

Store an associated identifier and a projector device which is adapted to project an identifier-based optical code matrix as an image. The identification device further comprises a

Locking device, which is designed to detect the image projected by the projector device, the optical code matrix by a sensor device and perform an image analysis of the captured image of the optical code matrix by an identification device and based thereon the portable

Key means by means of a comparison of the analyzed from the optical code matrix identifier with in a second memory device of

Lock device to identify stored identifiers. In claim 10, a portable key device is defined with a first memory device for storing an associated identifier and with a

A projector device configured to project an identifier-based optical code matrix as an image. In claim 1 1, a lock device is defined with a sensor device for detecting a projected image of an optical code matrix and a

Identification means for performing image analysis of the acquired image of the optical code matrix, wherein the lock means is formed, based thereon, a portable key means by means of a comparison of the identifier analyzed from the optical code matrix with in a second memory means of

Lock device to identify stored identifiers. In claim 12, a method for identifying a portable key device is defined, which comprises a first memory device for storing an associated identifier and a projector device, with the steps:

Projecting an optical code matrix based on the identifier of the portable key device as an image on a projection surface by the projector device and detecting the image projected by the projector device, the optical code matrix by a sensor device and performing an image analysis of the acquired image of the optical code matrix an identification device and identifying the portable key device by means of a comparison of the identifier analyzed from the optical code matrix with in a second memory device

Lock device stored identifiers.

Advantages of the invention

The present invention provides a tamper-proof identification of a key device.

The idea underlying the invention is that by mapping and

Detecting an optical code transmission based identification and authentication of a key device is detected in a coded optical point matrix. The coded optical point matrix is from the portable

Hardware component formed key device of the user to be identified generated.

The idea of the invention provides, instead of the otherwise used magnetic stripe technology or instead of the use of radio data transmission methods, to transmit the data to be communicated purely optically. Thus, in contrast to magnetic stripe technology, the optically imaged code is only briefly available in a form readable by third parties. Advantageous compared

Radio data transmission is the limited spatial transmission of the data to be transmitted. Advantageous embodiments and further developments emerge from the dependent claims and from the description with reference to the figures. According to an advantageous embodiment of the identification device is the

Projector device as an optical electro-mechanical microsystem, MEMS, or as a LCOS system formed. As a result, it can be ensured, for example, that the projector device can be integrated in the portable key device.

According to a further advantageous development of the identification device, the identification device is designed to perform an access control of a person carrying the portable key device with him. This allows easy control of access permissions for a specific group of people.

According to a further advantageous development of the identification device, an access of the person to areas enabled for the person can be controlled by the access control.

According to a further advantageous development of the identification device, the optical code matrix is designed as a two-dimensional barcode. This allows a simple coding of the identifier and a secure image analysis means in the

Identification device implemented method for correcting possible distortions of the optical code matrix.

According to a further advantageous development of the identification device, the optical code matrix is designed as a two-dimensional matrix with individual data points.

According to a further advantageous development of the identification device, a single data point of the optical code matrix has a coding parameter

Light intensity and / or a spectral composition of a light beam, which generates the respective data point as an image. This increases the data volume of the payload transmitted with the optical code matrix, as a result of which the security of the identification and authentication is likewise increased on account of the increased data volume or the increased key length of the identifier. According to a further advantageous development of the identification device, a single data point of the optical code matrix is defined by a specific position of one or more deflection mirrors of the projector device. According to a further advantageous development of the identification device, the optical code matrix is designed as a 10 × 10 matrix, preferably as a 9 × 5 matrix, particularly preferably as a 2 × 4 matrix.

The advantages described in the above paragraphs are also ensured in a corresponding method for identifying a portable key device.

Brief description of the drawings

Further features and advantages of the present invention will be explained below with reference to the accompanying figures.

Show it:

Fig. 1 is a schematic representation of the identification device according to a possible embodiment of the invention;

Fig. 2 is a schematic flow diagram of a method for

Identification of a portable key device according to another possible embodiment of the invention; and

Fig. 3 is a schematic representation of an optical code matrix according to another possible embodiment of the invention.

In the figures of the drawing, like reference characters designate like or functionally identical components, unless otherwise indicated.

1 shows a schematic representation of the identification device according to a possible embodiment of the invention. An identification device 1 comprises a portable key device 10 and a lock device 20. The portable key device 10 has a first memory device 12 for

Store an associated identifier and a projector device 1 1 on. The projector device 1 1 is adapted to a on the identifier of

Key device 10 based optical code matrix 5 as an image in a light cone 5 on the projection surface 21 of the lock device 20 to project. When

Projector device 1 1, a DLP projector, Digital Light Processing, with a Digital Micromirror Device, DMD, are used, wherein the projector device 1 1 has an integrated circuit and tiltable by electrical impulses tilting mirror.

The projector device 1 1 is, for example, as an optical electro-mechanical microsystem, MEMS, or as a digitally controlled, micromechanical

Small mirror system or as a liquid crystal on silicon system, short LCOS system trained. An LCOS system refers to a liquid crystal system on a silicon substrate and is a reflection-capable technique for display devices similar to a liquid crystal display, LCD.

The image is generated by a targeted control of the tilting mirror of

Projector device 1 1, so that the light of the light cone 5 is directed or deflected in a desired direction by means of projection optics of the projector device 1 1.

Furthermore, the portable key device 10 has an input device 13 and an output device 14. The input device 13 may be formed as a keyboard and is provided for example for inputting or selecting an identifier.

The output device 14 can be designed as a screen or display and is provided, for example, for indicating a successful identification of the key device 10.

The lock device 20 comprises a projection surface 21, a sensor device 22, 23, an identification device 24, a second memory device 25 and an interface device 26.

The projection surface 21 is formed, for example, as a flat surface, which is transmissive or transflective and on which the image of the optical code Matrix 5 is created by projection. In this case, a reflection in lateral, undesired directions can be avoided in order to make it difficult or impossible for third parties to detect the optical code matrix 5 outside the lock device 20. The sensor device 22, 23 is, for example, as an image sensor for receiving two-dimensional images by electrical means with an upstream

Objective unit formed. The upstream objective unit is designed, for example, as an objective or another collecting optical system which images the image of the optical code matrix 5 projected onto the projection surface 21 onto the image sensor.

The lock device 20 is designed to detect the image of the optical code matrix 5 projected by the projector device 1 by a sensor device 22, 23 and to perform an image analysis of the acquired image of the optical code matrix 5 by an identification device 24 and based thereon identify the portable key device 10 by means of a comparison of the identifier analyzed from the optical code matrix 5 with identifiers stored in the second memory device 25 of the lock device 20. The identification device 24 is designed, for example, to detect and correct a distortion of the optical image matrix 5 caused by the projection.

The interface device 26 is for example as a radio or

Connector interface formed and used to communicate the

Locking device 20 with a network. For example, one of the key ins

FIG. 2 shows a schematic flow diagram of a method for identifying a portable key device according to another possible embodiment of the invention.

In a first step, a projection S1 of an optical code matrix 5 based on the identifier of the portable key device 10 takes place as an image on one

Projection surface 21 through the projector device 1 1. The identifier is assigned to the portable key device 10, for example, by the lock device 20 has been and is stored in the memory device 12 of the key device 10. In this case, an identifier can also be assigned to a plurality of key devices 10.

In a second step, an acquisition S2 of the image projected by the projector device 1 1 of the optical code matrix 5 is performed by a sensor device 22, 23 of the lock device 20 and image analysis of the acquired image of the optical code matrix 5 by an identification device 24 of the

Locking device 20. In a third step, identification S3 of the portable key device 10 is carried out by means of a comparison of the identifier analyzed from the optical code matrix 5 with data stored in a second memory device 25 of the lock device 20

IDs. In this case, in the second storage device 25 of the portable

Key device 10 assigned identifier and the optical code matrices based thereon 5 stored.

FIG. 3 shows a schematic representation of an optical code matrix according to another possible embodiment of the invention. The optical code matrix 5 is applied to the projection surface 21 through the

Projector device 1 1 and is for example designed as a two-dimensional matrix with individual data points DP1-DPn, wherein the X and Y axis of the diagram shown in Figure 3 represent the image size of the image of the optical matrix 5. The optical code matrix 5 as shown in FIG. 3 has a size in the centimeter range.

A single data point DPx of the optical code matrix 5 has as

Coding parameters on a light intensity and / or a spectral composition of the respective data point DPx imaging light beam.

The optical code matrix 5 is designed, for example, as a 2-dimensional code or 2-dimensional bar code and represents an opto-electronically readable

In this case, different color values and intensity values of the individual data points DP1-DPn of the 2-dimensional code can be used as the payload. The advantage that can be achieved thereby is a higher density

Payload that can be accommodated per area. The optical code matrix 5 is for example as a 10x10 matrix with 100 data points DPx or as a 9x5 matrix with 45 data points DPx or as a 2x4 matrix with 8 data points DPx.

For example, by simply coding the color value of a

Data point DPx in each case a maximum or a minimum intensity of

Basic colors red, green and blue already defined 8 data bits per data point DPx since the two possible intensity values of the three primary colors result in eight different color values. An optical code matrix 5 formed as a 2x2 matrix with such color value coding with eight possible color values already reaches 4096 different possible codings of the optical code matrix 5.

Even low resolution modes of computer graphics standards, which in the

Projector device 1 1 and / or the sensor device 22, 23 are used, are thus suitable to achieve a high number of coding options.

Claims

claims

1 . An identification device comprising: a portable key device (10) which is a first

Memory means (12) for storing an associated identifier and projector means (11) adapted to project an identifier-based optical code matrix (5) as an image; and a lock device (20) which is designed to detect the image of the optical code matrix (5) projected by the projector device (1) by a sensor device (22, 23) and by an identification device (24) to analyze the image and, based thereon, the portable key device (10) by means of a comparison of the identifier analyzed from the optical code matrix (5) with identifiers stored in a second memory device (25) of the lock device (20) to identify.

2. Identification device according to claim 1, wherein the

Projector device (1 1) as an optical electro-mechanical microsystem, MEMS, or as a LCOS system is formed.

3. Identification device according to claim 1 or 2, wherein the

Identification device is designed to perform an access control of a person who carries the portable key device (10) with him.

4. Identification device according to claim 3, wherein by the

Access control, an access of the person to areas released for the person is controllable.

5. Identification device according to one of the preceding claims, wherein the optical code matrix (5) is designed as a two-dimensional barcode.

6. Identification device according to one of the preceding claims, wherein the optical code matrix (5) as a two-dimensional matrix with individual data points (DP1-DPn) is formed.

7. Identification device according to one of the preceding claims, wherein a single data point (DPx) of the optical code matrix (5) as

Coding parameter has a light intensity and / or a spectral composition of a light beam, which generates the respective data point (DPx) as an image.

8. Identification device according to one of the preceding claims, wherein a single data point (DPx) of the optical code matrix (5) by a specific position of one or more deflection mirror of the projector device (1 1) is defined.

9. Identification device according to one of the preceding claims, wherein the optical code matrix (5) is formed as a 10x10 matrix, preferably as a 9x5 matrix, particularly preferably as a 2x4 matrix.

A portable key device (10) comprising: first storage means (12) for storing an associated identifier; and

a projector device (1 1), which is designed to project an identifier based on the optical code matrix (5) as an image.

1 1. Lock device (20) having sensor means (22, 23) for detecting a projected image of an optical code matrix (5); and identifying means (24) for performing image analysis on the captured image of the optical code matrix (5); wherein the lock device is designed to identify thereon a portable key device (10) by means of a comparison of the identifier analyzed from the optical code matrix (5) with identifiers stored in a second memory device (25) of the lock device (20).

A method of identifying a portable key device (10) having a first memory device (12) for storing an associated identifier and a projector device (11), comprising the steps of:

Projecting (S1) one on the identifier of the portable

Key device (10) based optical code matrix (5) as an image on a projection surface (21) through the

Projector device (1 1);

Detecting (S2) the image projected by the projector device (11), the optical code matrix (5) by a sensor device (22, 23) and performing an image analysis of the acquired image of the optical code matrix (5) by an identification device (24 ); and

Identifying (S3) the portable key device (10) by means of a comparison of the identifier analyzed from the optical code matrix (5) with identifiers stored in a second memory device (25) of the lock device (20).