Method for reading information from a one- or multi-dimensional coding field

Abstract

Method for reading information from a one-dimensional or multi-dimensional coding field (2), wherein the information is stored within boundaries (3) of the coding field (2) and wherein the information is present in the one-dimensional or multi-dimensional coding field (2) by means of a magnetic and / or magnetizable medium (4) and a magnetically sensitive sensor device (5) is used to read the information, comprising the steps: a) bringing the one-dimensional or multi-dimensional coding field (2) and the sensor device (5) together at a distance (d) less than or equal to a maximum sensing distance (d max ); b) aligning the sensor device (5) relative to the coding field (2) such that a sensor device field of view (8) detects at least part of all the required partial areas (9) of the one- or multi-dimensional coding field (2) containing information (to be sensed) (alignment position); c) sensing all required information at once or sequentially in at least one suitable alignment position using the sensor device (5) in at least one or more point detections, line detections and / or at least one matrix detection for all required information (to be sensed); d) wherein the acquisition of the required data during the acquisition reading process is carried out in such a way that no relative read-out movement of a point, line or matrix sensor of the sensor device (5) relative to the coding field (2) is carried out, characterized in that the sensor device (5) is assigned at least one bias magnetizer (101) with which a bias magnetization of the information contained in the coding field (2) is effected before acquisition.

Description

The invention relates to a method for reading information from a one- or multi-dimensional coding field.It is known from the prior art to sequentially scan magnetic information, which is stored, for example, in a magnetic carrier material, by means of inductively responsive sensor devices, such as coils having a winding core, by applying a relative movement between the carrier containing the information and the sensor. Such principles of operation have long been known, for example, in the analog sector as audio tapes. In the digital sector, this inductive scanning of magnetic information due to inducing relative movement is used, for example, in a magnetic track of credit and / or EC cards, hard disks and the like.The aforementioned inductive readout of data stored in the magnetic carrier has the disadvantage that a relative speed (scanning speed) between the sensor device and the carrier material containing the information must lie in a window between a minimum speed and a maximum speed in order to be able to reliably read out the contained data correctly. Too slow or too fast a relative movement can lead to undesired read errors.In addition, it is sometimes even necessary for the inductively acting sensor to even touch the magnet carrier and thus possibly cause higher wear on the sensor side and on the magnet carrier side. If contact is to be avoided, complex measures are necessary to ensure a narrow distance window during scanning, which is undesirable.From US 2012 / 0 104 097 A1 and U.S. Pat. No. 5,742,036 A1, methods for reading out information from a one- or multi-dimensional coding field are known, wherein the information is stored within boundaries of the coding field and wherein the information is present in the one- or multi-dimensional coding field by means of a magnetic and / or magnetizable medium and a magnetically sensitive sensor device is used for reading out the information, comprising the steps: a) local bringing together of the one- or multi-dimensional coding field and the sensor device; b) aligning the sensor device relative to the coding field in such a way that a sensor device visual field detects (alignment position) at least a part of all the required partial region of the one- or multi-dimensional coding field (partial region to be sensed); c) sensing all required information at once or sequentially in at least one suitable alignment position using the sensor device in at least one or more point detections, line detections and / or at least one matrix detection for all required information (to be sensed); d) wherein the detection of the required data in the detecting read operation is carried out in such a way that no read-out relative movement of a point, line or matrix sensor of the sensor device relative to the coding field is carried out.U.S. Pat. No. 4,585,930 discloses a magnetic card reader.U.S. Pat. No. 5,288,981 A discloses a method and an apparatus for encoding machine-readable data.EP 2 774 685 A1 discloses a system and a method for protecting against forgery and for verification.A further card reader is known from WO 2011 / 005 222 A1.DE 10 2006 037 216 B4 discloses a method for producing a point distribution in storage medium.US 2009 / 0 188 970 A1 discloses a method for reading out a barcode.WO 2007 / 115 718 A2 discloses a further method for producing a point distribution in storage medium.It is therefore an object of the invention to specify a method for reading out information from a one- or multi-dimensional coding field, which method is capable of being particularly fault-tolerant with respect to relative movements and their size between a coding field and a sensor device, and of configuring the reading process particularly simply and reliably.Further, a high sampling rate is to be ensured to acquire a large amount of information in parallel or sequentially.Furthermore, the possibility is to be created of providing a high read quality / read quality in a contactless manner.These objects are achieved by a method having the features of claim 1. Advantageous embodiments are specified in dependent claims.A method according to the invention is a method for reading information from a one- or multi-dimensional coding field, wherein the information is stored within boundaries of the coding field and wherein the information is present in the one- or multi-dimensional coding field by means of a magnetic and / or magnetizable medium and a magnetically sensitive sensor device is used for reading the information, comprising the steps: a) bringing the one- or multi-dimensional coding field and the sensor device together locally to a distance d less than or equal to a maximum sensing distance d max; b) aligning the sensor device relative to the coding field in such a way that a sensor device visual field detects at least a part of all the required (to be sensed) information-containing sub-region of the one- or multi-dimensional coding field (alignment position); c) sensing all required information at once or sequentially in at least one suitable alignment position using the sensor device in at least one or more point detections, line detections and / or at least one matrix detection for all required information (to be sensed); d) wherein the detection of the required data in the detecting read operation is effected in such a way that no read-out relative movement of a point, line or matrix sensor of the sensor device relative to the coding field is carried out, characterized in that the sensor device is assigned at least one premagnetizer with which a premagnetization of the information contained in the coding field is effected before the detection.With such a method, it is possible to obtain a high-quality and fault-tolerant readout result of information. This is achieved in particular in that at the time of the acquisition of information from at least one partial area of the coding field no relative movement, or at least no relative movement except for possible disturbing movements, takes place between the sensor device and also, if applicable, individual sensors of a plurality of sensors which form the sensor device. The invention proposes the particular selection of the suitable sensor types of construction with which the reading of magnetic information is possible, and by the provision of ideally no reading movement, that the method according to the invention is independent of possibly inaccurate (too large or too small) reading movements.The read-out process, i.e. the data acquisition process, is thereby particularly simple and reliable in terms of the process. The method according to the invention also creates the possibility of providing a high read-out quality or a high read-out quality in a contactless manner. By parallel or in particular rapidly consecutive serial scanning of information contained in the coding field, it is possible to make a relatively large amount of information detectable without a defined read-out movement and / or a touching scan having to take place.According to a further preferred embodiment, a Hall sensor, an MR matrix sensor, a saturation core matrix sensor (Förster probe), a Lorentz force magnetometer / sensor or a squid sensor or an MI sensor is used as the sensor device in point, line and / or matrix construction.The above-mentioned types of sensors are particularly suitable for reading out magnetic information without relative movement between the sensor and the magnetic information. With the mentioned sensor types, a point, lines or matrix sensor can be expediently implemented, wherein a point sensor is to be understood in particular as a single sensor element. A line sensor can be understood to mean a plurality of sensor elements arranged in a line. A matrix construction can be, in particular, a plurality of individual sensors arranged in rows and columns in the manner of a sensor array.Particularly preferably, a magnetic ink is used as the magnetic and / or magnetizable medium.Such a "storage liquid" has the advantage that it can be printed and, in particular, can also be overprinted, so that it is possible to avoid optical visibility of the code and nevertheless to ensure magnetic readability.As a further preferred embodiment, a 1D barcode, a 2D barcode, e.g. a QR coding field or a 3D coding field or another unique pattern of magnetic or magnetizable medium is used as the planar or spatial coding field.The above-mentioned constructions of coding fields are comparable to an optical one-dimensional barcode, an optical two-dimensional barcode, e.g. a QR coding field or a 3D coding field, in which, for example, polarity information or magnetic field strength information can be read out as the third dimension in the magnetic embodiment.It is advantageous that at least after the alignment and before the sensing along at least one sensor device visual field limit, a premagnetizing magnetic field is generated, which acts on the magnetic and / or magnetizable material.For improved read-out capability, it is recommended in particular to carry out a premagnetization after the alignment of the sensor device relative to the coding field and before sensing along at least one sensor device visual field limit, in order to configure a magnetizable medium which contains the information in a better manner.According to a further preferred embodiment, at least after the alignment and before the sensing within the sensor device field of view, a premagnetizing magnetic field, in particular of one or more premagnetizing elements, is generated at points and / or linearly and / or in a planar manner.The biasing can be effected in particular according to the above measure depending on the type of sensor used, such as a point sensor / line sensor / matrix sensor, in a point-like and / or linear and / or planar manner.Furthermore, the biasing magnetic fields are preferably maintained, in particular maintained in a attenuated manner, during sensing.The above measure improves the readout behavior or the readout quality of the method according to the invention.It is particularly advantageous if at least one VOR reference information item is read out from the coding field before all the required information items are sensed, and the sensing result of the VOR reference information item is assessed qualitatively by comparing the sensed VOR reference information item with a DESIRED-VOR reference information item.With the above procedure, a prediction can be made about the sensing quality before the actual readout process. If a poor sensation occurs, an adjustment or a correction of the alignment position of the sensor device can optionally be carried out in order to improve the quality of the sensed VOR reference information.In a further preferred embodiment, at least one POST-POST reference information item is read out from the coding field for all the required information items and the sensing result of the POST-POST reference information item is assessed qualitatively by comparing the sensed POST-POST reference information item with a DESIRED POST-POST reference information item.Analogously to the sensing of PREF reference information, the above-mentioned sensing of POSTF reference information can specify a sensing quality after the actual read-out process, so that the actual scan process / read-out process of the information is very likely to lie between the qualities of the PREF reference information and the POSTF reference information in the further course. It is thus possible, if appropriate, to make a statement about the read quality / sensing quality using both reference information items.These suggest measures listed below.Particularly preferably, a qualitative assessment of the sensing result, which was sensed between the PREF reference information and the sensed POSTF reference information, is carried out from a sensing result relating to the PREF reference information and a sensing result relating to the POSTF reference information.According to a particularly preferred embodiment, for the purpose of optically identifying the sensor device field of view, the sensor device field of view boundaries are projected in an optically visible manner on a carrier body which carries the one- or multi-dimensional coding field. Alternatively, an optical centering mark in dot or line form can be used for aiming at the one- or multi-dimensional coding field.In particular, if the sensor device is hand-guided, i.e. is guided by a human operator, it may be expedient for the sensor device visual field, in particular its boundaries, to be identified by optically projecting the sensor device visual field boundaries or the coding field center, in order to enable the operator to bring the sensor device visual field and the coding field to coincide more easily.Furthermore, during the sensing process, i.e. during the acquisition of magnetic information, no relative movement takes place between the sensor device and the one- or multi-dimensional coding field to be sensed (readout movement).At least during the sensing process, preferably no relative movement takes place between the sensor device and the coding field to be sensed. In particular, this makes it possible to avoid blurring in the sensing. The term "non-occurrence" of a relative movement is to be understood according to the invention as meaning that no relative movement is carried out which makes a readout process possible for the first time, as is the case with inductive magnetic sensors which are known from the prior art. Disturbing movements, such as, for example, shaking movements or shaking movements, when a manually guided sensor cannot be held 100% quietly in space by the human operator or when a sensor built on a stand or another stand on a running machine moves into vibration or the like in fluctuating movements, should not be understood within the meaning of the invention as a relative movement, since such types of movements are not intentionally generated but are a consequence of specific arrangement systems.It can likewise be provided, for example, that an even relative movement takes place between the coding field (or a partial region thereof) and the sensor device, wherein such an even movement is not essential for the reading process, but is due, for example, to a continuous transport of objects provided with the coding field to be read. The corresponding readout quality is tolerant to such an "intentional" relative movement, which is, however, not essential for the readout operation, but rather has other reasons of movement.According to a further preferred embodiment, a binary pattern or a pattern having "gray values" is used as the one- or multi-dimensional coding field, wherein "gray value" is to be understood as a region which is a lower magnetized or lower magnetizable region compared to a maximum magnetization or a maximum magnetizability.The above measures indicate a simple possibility, such as a planar coding field containing information in three dimensions (two geometric dimensions and one dimension with respect to the amount).It is particularly advantageous if a line sensor constructed from at least two individual sensor elements is used as the sensor device for reading out a 1D code, e.g. a barcode.If, for example, only the reading out of a barcode, i.e. of a one-dimensional coding field, is possible, this can be effected in a simple manner with a linear sensor which is constructed from at least two individual sensor elements.According to a further particularly preferred embodiment, a sensor array, e.g. consisting of at least two lines each having at least two individual sensor elements, is used as the sensor device for reading out at least two-dimensionally (2D) encoded information (2D code).In an analogous manner, either a flat sensor, i.e. a sensor array or a line sensor, which sequentially scans row-wise and / or column-wise, can be used for reading out a flat coding field.Furthermore, for reading out area-wise (2D) coded information (2D code), the sensor array thus preferably acquires the information sequentially row-wise and / or column-wise within an acquisition process.In a further preferred embodiment, after a detection process, a displacement of a point sensor, a line sensor or a matrix sensor within a housing of the sensor device takes place row by row or column by column to a further detection position of the point / line and / or matrix sensors, and after the displacement into the further detection position, a further detection process takes place with the point / line and / or matrix sensors stationary with respect to the housing.A sequential reading of the information can contribute to a sensor device, e.g. a point sensor, a line sensor or a flat matrix sensor, being able to be brought into different scanning positions with respect to a housing of the sensor device, whereas preferably during the reading process itself, i.e. during the detection process itself, the point sensor, the line sensor or the matrix sensor is at rest with respect to the housing and thus there is no relative movement between the coding field and the receiving / detecting sensor device.In the same way, it may be expedient to move a point sensor, a line sensor or a matrix sensor within the housing with a coding field moving with respect to the housing during the detection, so that at least between the point sensor, the line sensor and / or the matrix sensor and the coding field during the scanning process as little relative movement as possible takes place, in any case a relative speed v rel is present which is smaller than a maximum permissible relative speed v relmax.According to a further preferred embodiment, the displacement into further capture positions and the capture into further capture positions take place sequentially until all required information contained in the coding field is captured.Particularly advantageously, the displacement of the point / line and / or matrix sensors within the sensor device takes place in a linear, row-shaped, column-shaped or arc-shaped manner.Particularly advantageously, the displacement of the point / line and / or matrix sensors within the sensor device takes place in a grid-like manner.As a further preferred embodiment, a maximum relative speed v relmax between the sensor device and the coding field is up to half the extent of the coding field per second in the direction of the relative speed v rel.A relative speed v rel up to the above-specified variable, which occurs for the sake of circumstances, still leads to readout results with sufficient quality in the method according to the invention.In a further preferred embodiment, during the detection, the point / line and / or matrix sensors are moved within the housing of the sensor device in the direction of the relative speed v rel between the coding field and the housing, in particular moved so quickly that the maximum relative speed v relmax suitable for static reading is not exceeded between the point / line and / or matrix sensors and the coding field.The above measure makes it possible to realize an increased relative speed, for example for the purpose of transporting the articles provided with the coding field, and nevertheless to maintain a maximum permissible relative speed between the coding field and the sensor device in order to achieve a required sensing quality.Particularly advantageously, acquired data are fed all, row- or column-wise serially or all, row- or column-wise parallel to an evaluation unit which is designed and configured such that a resulting total information relating to the content of the coding field is made outputtable from the data arriving in series or parallel.Total information obtained in this way can be supplied in a known manner to further processing by a data processing system, e.g. containing an output device.Furthermore, the invention is explained in more detail by way of example with reference to the figures. The following are shown: FIG. 1 : schematically, in a perspective view, a first embodiment of a detection situation of the method according to the invention using a matrix sensor for detecting a 2D coded field; FIG. 2 : shows, by way of example, a second embodiment of a detection situation of the method according to the invention using a line sensor for reading out a two-dimensional (2D) coding field, wherein the line sensor is displaced in a raster-like manner; FIG. 3 : shows a third embodiment of a detection situation of the method according to the invention, in which an individual sensor element sequentially scans a 2D coding field in a raster-like manner; FIG. 4 : schematically, a flow diagram for an embodiment of the method according to the invention, having a possible quality control of the sensing result; FIG. 5 shows a flow diagram of the method according to the invention in a simplest embodiment.FIG. 1 shows a highly diagrammatic perspective view of a first embodiment of a possible detection situation for reading out information according to the method according to the invention.A carrier body 1 has an encoding field 2 which can have boundaries 3.Information, in particular coded information, is preferably applied within the coding field 2 by means of a magnetic or magnetizable medium 4.The information may be in the form of, for example, a one-dimensional code, e.g., a barcode 4 a, a two-dimensional code, e.g., a QR code 4 b, or other unique patterns 4 cthat receive information.In the illustration according to FIG. 1, the aforementioned code types (barcode 4 a, QR code 4 band other patterns 4 c) in one and the same coding field 2 are illustrated by way of example.It is of course possible to use in the coding field 2 only one of the above-described codes or a selection from different code types.A sensor device 5 has a sensor 6, which is arranged, for example, in a housing 7.The sensor 6 can be configured as a line sensor, as a point sensor, as a matrix sensor, which corresponds to a sensor array of point sensors (individual sensors).The sensor device 5 is arranged at a distance d from the coding field 2 and is at rest relative to the coding field 2 in the embodiment according to FIG. 1.The distance d, which forms a sensing distance, is selected such that a sensor device field of view 8 covers at least one sub-region 9 of the coding field 2, wherein the information to be sensed or at least a subset of the information to be sensed are arranged within the sub-region 9.Within a sensor device visual field limit 10, the sensor 6, which is designed as a point sensor (individual sensor), line sensor, matrix sensor, i.e. sensor array, can read out information. The sensor passes on the read-out information to an evaluation unit 20, which evaluates the detected information / data and, if appropriate, supplies it to an output unit 21.Sensing distance / distance d is selected in such a way that it does not exceed a maximum sensing distance d max.In the present embodiment according to FIG. 1, the sensor 6 is at rest with respect to the coding field 2, i.e. a relative speed v rel between the coding field 2 and the sensor 6 is zero.The relative speed v rel can assume a maximum value, i.e. the coding field 2 can move relative to the sensor 6 at a maximum relative speed v relmax wherein the maximum relative speed v relmax is selected such that, on account of this relative movement, no unacceptably high blurrings arise when sensing the information.The method according to the invention using the sensor 6 is distinguished in that for the purpose of reading out precisely no relative speed v rel is necessary between the coding field 2 and the sensor 6. In contrast, such a relative speed is required for the purpose of reading in a sensor device according to the prior art, which is based on the principle of action of induction, since in a reading device based on induction without such a relative movement (i.e. with a reading speed of 0), no electrical signal would be generated.The relative speed v rel which is permissible within the scope of the present invention to a certain extent but is not necessary is limited with regard to its height and optionally also with regard to its direction only in that, despite (not because of) this relative speed v rel by means of the selected sensors, which can be, for example, a Hall sensor, an MR sensor, a saturation core matrix sensor (Förster probe), a Lorentz force magnetometer / sensor or a squid sensor or an MI sensor, a proper reading is made possible.All these sensors have in common that magnetic information can be detected without a relative movement having to take place between the sensor and an object containing the magnetic information.Nevertheless, it is expedient to permit certain relative movements at a maximum relative speed v relmax since it is not always possible in technical practice to ensure a completely movement-free arrangement of the sensor device 5 with respect to the coding field 2. For example, in the case of a manually guided sensor device 5, the operator may be dithered, but these are to be regarded as disturbing movements in the method according to the invention, which should ideally be avoided.In the embodiment according to FIG. 1, a detection situation of the method according to the invention on the basis of a matrix sensor 6 bis shown. Such a matrix sensor 6 bis formed, for example, on a base plate 100 on which a sensor array 6 cis mounted. The sensor array 6 chas, for example, four rows w, x, y and z and four columns W, X, Y and Z. In addition, for example, a hundred premagnetizers 101 can be arranged on the base plate, with which premagnetizers the sensor device 5 is able to carry out a premagnetization of the information contained in the coding field 2, for example stored in the medium 4, before the detection.A further detection situation of the method according to the invention is shown in FIG. 2. the carrier body 1, the coding field 2 and the information contained therein correspond in this case to the description which was given in connection with FIG. 1.In contrast to the detection situation according to FIG. 1, the sensor 6 in the present detection situation is designed as a line sensor 6 dthat detects the columns W, X, Y, Z. The line sensor 6d sequentially reads out the information of the coding field 2 in different positions (positions of the columns W, X, Y, Z) one after the other, i.e. sequentially, and passes it on to the evaluation unit 20. An output unit 21 may display the information as appropriate. Alternatively, as in the detection situation according to FIG. 1, the information can be forwarded either directly from the sensor device 5 or, with the evaluation unit 20 being interposed, for example to a data acquisition device (not shown).A third detection situation of the method according to the invention is shown by way of example in FIG. 3. the sensor 6 of the sensor device 5 is designed in this embodiment as a point sensor 6 e, which can be moved preferably in a latching manner both along the rows w, x, y, z and along the columns W, X, Y, Z. Such a possibility of displacement is illustrated by the arrows 102; 103. In the present embodiment, after each individual detection by the point sensor 6 e, which can naturally scan only a partial region of the coding field 2 in one step, the point sensor 6 eis moved further by either one row or by one column and is stopped there again. In the stopped position, the next readout step takes place, so that despite a relative movement of the sensor, e.g. of the point sensor 6 eor of the line sensor 6 dfrom FIG. 2, at the time of the information acquisition from the coding field 2, as far as possible no relative speed v rel or at most a maximum relative speed v rel-max, as was described above in connection with FIG. 1, is present.FIG. 4 shows a flow diagram of a specific embodiment of the method according to the invention. First, in a positioning step, the sensor device 5 is positioned relative to the coding field 2 in a detection position.Subsequently, in a first acquisition step, a PREM reference is acquired and compared with a stored desired PREM reference. If the detection result, i.e. the sensing result of the first detection step relating to the VOR reference is found to be okay, a second detection step, the so-called sensing step, can take place in which the relevant information stored in the coding field 2 is detected.If the detection result of the VOR reference is found to be out of order, the positioning step can be carried out again in order to ensure an improved detection accuracy of the sensor device 5, if appropriate.After the sensing step, i.e. in the acquisition step of the relevant information contained in the coding field 2, according to this embodiment of the method according to the invention, a second acquisition step of a AFTER reference is carried out, which for example-like the BEFORE reference-is present in a predefined edge region of the coding field 2. The POST reference is then compared to a TARGET POST reference. If the POST reference is found to be okay, it can be assumed that a sensing step of the information of the coding field 2 has taken place in sufficient quality / quality between an i.o.-prem reference and an i.o.-postm reference.If the POST-SUBSEQUENT reference is deemed not to be okay or not to be of sufficiently high quality, a sensing step can optionally be carried out once again in order to allow renewed detection of the POST-SUBSEQUENT reference in order to exclude disturbing influences, if appropriate, by means of repeated detection later in time.A qualitatively evaluated sensing or a qualitatively found-to-be-okay sensing can be supplied to the evaluation unit or an output unit of the sensing result.In a further embodiment of the method according to the invention, which is a simple embodiment, the positioning step is carried out in such a way that the sensor device 5 or the sensor 6 is moved relative to the coding field 2 into a position suitable for data acquisition / detection. Subsequently, the sensing step of reading out the information contained in the coding field 2 takes place. The reading out can be effected row-wise or column-wise or parallel or sequential for the entire matrix. The reading out is preferably carried out without relative read-out movement of the sensor device relative to the coding field 2.The process according to the invention makes it possible to achieve the object set according to the invention in a particularly advantageous manner. In particular, wear-free sensing of information stored in a magnetic or magnetizable medium is possible, since contactless sensing.In addition, the method according to the invention is insensitive to and independent of defined relative speeds, since the method according to the invention uses sensors which are not dependent on inductive signal generation.List of reference characters1 Carrier body 2 Coding field 3 Boundaries 4 Medium 4 a Barcode 4 b QR code 4 cPattern 5 Sensor device 6 Sensor 6 bMatrix sensor 6 cSensor array 6 dLine sensor 6 eDot sensor 7 Housing 8 Sensor device visual field 9 Partial region 10 Sensor device visual field boundary 20 Evaluation unit 21 Output unit d Distance d max Maximum sensing distance v rel Relative speed v relmax Maximum relative speed w, x, y, z Rows W, X, Y, Z Columns 100 Base plate 101 Premagnetizer 102, 103 Arrows

Claims

Method for reading information from a one- or multi-dimensional coding field (2), wherein the information is stored within boundaries (3) of the coding field (2), and wherein the information is present in the one- or multi-dimensional coding field (2) by means of a magnetic and / or magnetizable medium (4), and a magnetically sensitive sensor device (5) is used for reading the information, comprising the steps: a) bringing the one- or multi-dimensional coding field (2) and the sensor device (5) together locally to a distance (d) less than or equal to a maximum sensing distance (d max); b) aligning the sensor device (5) relative to the coding field (2) in such a way that a sensor device visual field (8) detects (alignment position) at least a part of all required information-containing sub-region (9) of the one- or multi-dimensional coding field (2) (alignment position); c) sensing all required information at once or sequentially in at least one suitable alignment position using the sensor device (5) in at least one or more point detections, line detections and / or at least one matrix detection for all required information (to be sensed); d) wherein the required data are recorded during the recording read operation in such a way that no relative read movement of a point, line or matrix sensor of the sensor device (5) relative to the coding field (2) is carried out, characterized in that the sensor device (5) is assigned at least one premagnetizer (101), with which a premagnetization of the information contained in the coding field (2) is effected before the recording.Method according to Claim 1, characterized in that, at least after the alignment and before the sensing, a premagnetising magnetic field is generated along at least one sensor device visual field limit (10), which magnetic field acts on the magnetic and / or magnetizable material.Method according to one of the preceding claims, characterized in that at least one premagnetising magnetic field is generated at least after the alignment and before the sensing within the sensor device field of view (8) at points and / or linearly and / or in the form of a surface.Method according to one of the preceding claims, characterized in that the biasing magnetic field / s is / are maintained, in particular is / are maintained in a attenuated manner, during sensing.Method according to one of the preceding claims, characterized in that, for the purpose of optically identifying the sensor device field of view (8), the sensor device field of view boundaries (10) or a centring point or a centring line are projected in an optically visible manner onto a carrier body (1) which carries the one- or multidimensional coding field (2).Method according to one of the preceding claims, characterized in that a line sensor (6d) constructed from at least two individual sensor elements is used as sensor device (5) for reading out a 1D code, preferably a barcode.Method according to one of the preceding claims, characterized in that, for the reading out of area-coded (2D-) information (2D-code), the sensor array (6c) sequentially acquires the information row-by-row and / or column-by-column from at least two rows each having at least two individual sensor elements within a detection process.Method according to one of the preceding claims, characterized in that after a detection process a displacement of a point sensor (6e), a line sensor (6d) or a matrix sensor (6b) within a housing (7) of the sensor device (5) takes place in addition to a further detection position of the point / line and / or matrix sensors and after the displacement into the further detection position a further detection process takes place with the one point / line and / or matrix sensors stationary relative to the housing (7).Method according to one of the preceding claims, characterized in that the displacement into further capture positions and the capture into further capture positions take place sequentially until all required information contained in the coding field (2) is captured.Method according to one of the preceding claims, characterized in that the displacement of the point / line and / or matrix sensors within the sensor device (5) takes place in a stepped manner in the form of a line, a row, a column or an arc.Method according to one of the preceding claims, characterized in that the displacement of the point / line and / or matrix sensors within the sensor device (5) takes place in the manner of a grid.Method according to one of the preceding claims, characterized in that a maximum relative speed (v relmax) between the sensor device (5) and the coding field (2) is up to half the extent of the coding field (2) per second in the direction of the relative speed (v rel).Method according to one of the preceding claims, characterized in that during the detection the point / line and / or matrix sensors within the housing (7) of the sensor device (5) are moved in the direction of the relative speed (v rel) between the coding field (2) and the housing (7), in particular are moved so quickly that a maximum relative speed (v relmax) suitable for static detection is not exceeded between the point / line and / or matrix sensors and the coding field (2).Method according to one of the preceding claims, characterized in that recorded data are fed as a matrix, row-wise or column-wise serially or in parallel to an evaluation unit (20) which is designed and set up in such a way that a resulting total information relating to the content of the coding field (2) is made outputtable from the serially or parallel incoming data.

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