Methods or arrangements for sensing record carriers

GPHYSICS G06Computing G06KRECOGNITION OF DATA PRESENTATION OF DATA RECORD CARRIERS HANDLING RECORD CARRIERS

G06K7/00Methods or arrangements for sensing record carriers

G06K7/0004Hybrid readers G06K7/0008General problems related to the reading of electronic memory record carriers, independent of its reading method G06K7/0013by galvanic contacts G06K7/0017the reading head of the connector being removably attached to the housing G06K7/0021for reading/sensing record carriers having surface contacts G06K7/0026the galvanic contacts of the connector adapted for landing on the contacts of the card upon card insertion G06K7/003means for pressing the connector contacts in the direction of the card contacts to assure trustworthy electrical connection between card and connector G06K7/0034the connector being capable of simultaneously receiving a plurality of cards in the same insertion slot G06K7/0039the plurality of cards being cards of the same type and format G06K7/0043the plurality of cards being cards of different formats G06K7/0047for reading/sensing record carriers having edge contacts G06K7/0052connectors capable of contacting cards of different formats G06K7/0056housing of the card connector G06K7/006the housing being a portable casing G06K7/0065comprising keyboard or display G06K7/0069including means for detecting correct insertion of the card G06K7/0073having multiple insertion slots, the respective slots suited for the same or different card form factors G06K7/0078reinforced housing for protection against damage, be it due malevolent action, such as drilling and other ways of forced entry, or by accident, such as shock due to dropping G06K7/0082comprising an arrangement for protection against electrostatic discharge G06K7/0086the connector comprising a circuit for steering the operations of the card connector G06K7/0091the circuit comprising an arrangement for avoiding intrusions and unwanted access to data inside of the connector G06K7/0095Testing the sensing arrangement G06K7/01Details G06K7/015Aligning or centering of the sensing device with respect to the record carrier G06K7/016Synchronisation of sensing process G06K7/0163by means of additional timing marks on the record-carrier G06K7/0166by means of clock-signals derived from the code marks G06K7/02by pneumatic or hydraulic means G06K7/04by mechanical means G06K7/042controlling electric circuits G06K7/045whereby the entire datafield of the record carriers is simultaneously sensed G06K7/047whereby the data field of the record carriers is sensed successively column after column G06K7/06by means which conduct current when a mark is sensed or absent G06K7/065for conductive marks G06K7/08by means detecting the change of an electrostatic or magnetic field G06K7/081electrostatic G06K7/082using inductive or magnetic sensors G06K7/083inductive G06K7/084sensing magnetic material by relative movement detecting flux changes without altering its magnetised state G06K7/085metal detectors G06K7/086sensing passive circuit G06K7/087flux-sensitive G06K7/088using magneto-sensitive switches G06K7/089hand-held scanners G06K7/10by electromagnetic radiation G06K7/10009sensing by radiation using wavelengths larger than 0.1 mm G06K7/10019resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. G06K7/10029the collision being resolved in the time domain G06K7/10039interrogator driven G06K7/10049binary tree G06K7/10059transponder driven G06K7/10069the collision being resolved in the frequency domain G06K7/10079the collision being resolved in the spatial domain G06K7/10089the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision G06K7/10099the directional field being used for pinpointing the location of the record carrier G06K7/10108interrogating only those RFIDs that fulfill a predetermined requirement G06K7/10118the sensing being preceded by at least one preliminary step G06K7/10128the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device G06K7/10138the step consisting of determining the type of record carrier G06K7/10148the step consisting of dynamically tuning the resonant circuit of the interrogation device that is emitting the interrogation signal G06K7/10158methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field G06K7/10168the powering being adversely affected by environmental influences G06K7/10178including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field G06K7/10188the repeating consisting of intelligently propagating data from record carriers via intermediate stations to the interrogation device G06K7/10198setting parameters for the interrogator G06K7/10207parameter settings related to power consumption of the interrogator G06K7/10217parameter settings controlling the transmission power of the interrogator G06K7/10227loading programming parameters or programs into the interrogator G06K7/10237the reader and the record carrier being capable of selectively switching between reader and record carrier appearance G06K7/10247issues specific to the use of single wire protocol [SWP] in NFC like devices G06K7/10257arrangements for protecting the interrogation against piracy attacks G06K7/10267the arrangement comprising a circuit inside of the interrogation device G06K7/10277the arrangement being mechanical, such as reinforced housings or protective cages against unlawful entry G06K7/10287the arrangement including a further device in the proximity of the interrogation device G06K7/10297arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs G06K7/10306ultra wide band G06K7/10316using at least one antenna particularly designed for interrogating the wireless record carriers G06K7/10326the antenna being of the very-near field type G06K7/10336the antenna being of the near field type, inductive coil G06K7/10346the antenna being of the far field type G06K7/10356using a plurality of antennas G06K7/10366the interrogation device being adapted for miscellaneous applications G06K7/10376the interrogation device being adapted for being moveable G06K7/10386the interrogation device being of the portable or hand-handheld type G06K7/10396the interrogation device being wearable G06K7/10405the interrogation device including an arrangement for sensing environmental parameters, such as a temperature or acceleration sensor G06K7/10415the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM G06K7/10425the interrogation device being arranged for interrogation of record carriers passing by the interrogation device G06K7/10435the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing G06K7/10445the record carriers being fixed to further objects G06K7/10455the record carriers being fixed to an endless tape or at least not fixed to further objects G06K7/10465the interrogation device being capable of self-diagnosis G06K7/10475arrangements to facilitate interaction with further interrogation devices G06K7/10544by scanning of the records by radiation in the optical part of the electromagnetic spectrum G06K7/10554Moving beam scanning G06K7/10564Light sources G06K7/10574Multiple sources G06K7/10584Source control G06K7/10594Beam path G06K7/10603Basic scanning using moving elements G06K7/10613by rotation G06K7/10623Constructional details G06K7/10633by oscillation G06K7/10643Activating means G06K7/10653using flexible or piezoelectric means G06K7/10663using hologram G06K7/10673Parallel lines G06K7/10683Arrangement of fixed elements G06K7/10693for omnidirectional scanning G06K7/10702Particularities of propagating elements G06K7/10712Fixed beam scanning G06K7/10722Photodetector array or CCD scanning G06K7/10732Light sources G06K7/10742including a diffuser for diffusing the light from the light source to create substantially uniform illumination of the target record carrier G06K7/10752Exposure time control G06K7/10762Relative movement G06K7/10772Moved readers G06K7/10782Slot readers G06K7/10792Special measures in relation to the object to be scanned G06K7/10801Multidistance reading G06K7/10811Focalisation G06K7/10821further details of bar or optical code scanning devices G06K7/10831Arrangement of optical elements G06K7/10841Particularities of the light-sensitive elements G06K7/10851Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device G06K7/10861sensing of data fields affixed to objects or articles G06K7/10871randomly oriented data-fields, code-marks therefore G06K7/10881constructional details of hand-held scanners G06K7/10891the scanner to be worn on a finger or on a wrist G06K7/109adaptations to make the hand-held scanner useable as a fixed scanner G06K7/1091means to wake up the scanner from a sleep mode G06K7/1092sensing by means of TV-scanning G06K7/1093sensing, after transfer of the image of the data-field to an intermediate store G06K7/1094the record carrier being at least partially of the hologram type G06K7/1095the scanner comprising adaptations for scanning a record carrier that is displayed on a display-screen or the like G06K7/1096the scanner having more than one scanning window G06K7/1097Optical sensing of electronic memory record carriers, such as interrogation of RFIDs with an additional optical interface G06K7/1098the scanning arrangement having a modular construction G06K7/1099scanning using X-rays G06K7/12using a selected wavelength G06K7/14using light without selection of wavelength G06K7/1404Methods for optical code recognition G06K7/1408the method being specifically adapted for the type of code G06K7/14131D bar codes G06K7/14172D bar codes G06K7/1421Circular bar codes G06K7/1426Multi-level bar codes G06K7/143Glyph-codes G06K7/1434Barcodes with supplemental or add-on codes G06K7/1439including a method step for retrieval of the optical code G06K7/1443locating of the code in an image G06K7/1447extracting optical codes from image or text carrying said optical code G06K7/1452detecting bar code edges G06K7/1456determining the orientation of the optical code with respect to the reader and correcting therefore G06K7/146the method including quality enhancement steps G06K7/1465using several successive scans of the optical code G06K7/1469using sub-pixel interpolation G06K7/1473error correction G06K7/1478adapting the threshold for pixels in a CMOS or CCD pixel sensor for black and white recognition G06K7/1482using fuzzy logic or natural solvers, such as neural networks, genetic algorithms and simulated annealing G06K7/1486Setting the threshold-width for bar codes to be decoded G06K7/1491the method including a reconstruction step G06K7/1495the method including an image compression step