# US 8,540,141 B2 · Encoding method for encoding medical items > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,141 B2 - Document ID: US8540141B2 - Status: Granted - Kind: B2 - Application number: 13/658,324 - Filed: 2012-10-23 - Published: 2013-02-21 - Granted: 2013-09-24 - Earliest claimed: 2009-08-03 - Assignees: Roche Diagnostics Operations, Inc. - Applicants: Roche Diagnostics Operations, Inc. - Inventors: Wolfgang Petrich; Stefan Kalveram; Markus Serr - Web page: https://patentgrep.com/patent/US8540141B2 ## CPC - G06K 19/06037: {multi-dimensional coding} - G06K 7/14: using light without selection of wavelength, e.g. sensing reflected white light {(G06K7/10831 - G06K7/1097 take precedence)} - G06K 7/1417: {2D bar codes} - G06K 19/06046: {Constructional details} - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract A coding for a medical disposable item is proposed comprising at least one information component in encoded form. Associated encoding methods and devices, and associated decoding methods and devices, are also proposed. The coding generally comprises an optical information component comprising one or more fields filled with a gray-scale value up to a certain degree of filling. Each gray-scale value and degree of filling are associated as a value pair determined as part of a code generated to correlate to an information component desired to be applied to and conveyed from a medical disposable item to an associated device that utilizes such items. ## Claims ### Claim 1 A method for generating at least one coding on an item, wherein the coding comprises at least one information component in encoded form, wherein the method comprises the following steps: a) converting the at least one information component into a code, wherein the code comprises a plurality of value pairs each pair comprising a gray-scale value and a degree of filling; b) converting the code into an optical information component, wherein the optical information component comprises at least one field filled with at least one gray-scale value up to an associated degree of filling in accordance with the code; and c) applying the optical information component to the item. ### Claim 2 (depends on 1) The method of claim 1, wherein the optical information component comprises a plurality of fields, wherein each field is assigned to a specific gray-scale value and is filled with the latter up to the associated degree of filling. ### Claim 3 (depends on 1) The method of claim 1, wherein method steps a) and b) are performed by executing a computer program in a computer, the computer program being adapted to convert an inputted information component into a code and to convert said code into an optical information component. ### Claim 4 (depends on 1) The method of claim 1, wherein converting the code into the optical information component includes converting the code into a two-dimensional optical information component. ### Claim 5 (depends on 1) The method of claim 1, wherein the optical information component comprises a plurality of fields and each field is filled with at least one gray-scale value up to the associated degree of filling in accordance with the code. ### Claim 6 A device for generating at least one coding on an item, wherein the coding comprises at least one information component in encoded form, wherein the device comprises: A) at least one code generating device, wherein the code generating device is adapted to convert the at least one information component into a code, wherein the code comprises a plurality of value pairs each pair comprising a gray-scale value and a degree of filling; B) at least one conversion device operatively connected to the at least one code generating device, wherein the conversion device is adapted to obtain or receive the code from the code generating device and to convert the code into an optical information component, wherein the optical information component comprises at least one field filled with at least one gray-scale value up to an associated degree of filling in accordance with the code; and C) at least one application device operatively connected to the at least one conversion device, wherein the application device is adapted to apply the optical information component to the item. ### Claim 7 (depends on 6) The device of claim 6, wherein the conversion device is adapted to convert the code into a two-dimensional optical information component. ### Claim 8 (depends on 6) The device of claim 6, wherein the optical information component comprises a plurality of fields and each field is filled with at least one gray-scale value up to the associated degree of filling in accordance with the code. ### Claim 9 A method for decoding at least one encoded information component on an item, wherein the method comprises the following steps: i) detecting at least one optical information component applied on the item, wherein the optical information component comprises at least one field filled with at least one gray-scale value up to an associated degree of filling; ii) converting the optical information component into a code by means of a histogram analysis, wherein the code comprises a plurality of value pairs each pair comprising a gray-scale value and a degree of filling based on the histogram analysis; and iii) converting the code into the information component. ### Claim 10 (depends on 9) The method of claim 9, wherein method steps ii) and iii) are performed by executing a computer program in a computer, the computer program being adapted to convert an optical information component into a code and to convert said code into an information component. ### Claim 11 (depends on 9) The method of claim 9, wherein the optical information component is a two-dimensional optical information component applied on the item. ### Claim 12 (depends on 9) The method of claim 9, wherein the optical information component comprises a plurality of fields and each field is filled with at least one gray-scale value up to the associated degree of filling. ### Claim 13 A device for decoding at least one encoded information component on an item, wherein the device comprises: I) at least one detection device for detecting at least one optical information component applied on the item, wherein the optical information component comprises at least one field filled with at least one gray-scale value up to an associated degree of filling; II) at least one evaluation device operatively connected to the at least one detection device and adapted to convert the optical information component into a code by means of a histogram analysis, wherein the code comprises a plurality of value pairs each pair comprising a gray-scale value and a degree of filling in accordance with the histogram analysis; and III) at least one decryption device operatively connected to the evaluation device and configured for converting the code into the information component. ### Claim 14 (depends on 13) The device of claim 13, wherein the device comprises at least one analysis system for detecting at least one analyte in a body fluid. ### Claim 15 (depends on 14) The device of claim 14, wherein the item comprises at least one optical test field for optically detecting the analyte and the analysis system comprises at least one optical detector for evaluating the optical test field, wherein the analysis system is configured to use the optical detector as part of the detection device for detecting the optical information component applied on the item. ### Claim 16 (depends on 13) The device of claim 13, further comprising a plurality of optical information components applied to the item. ### Claim 17 (depends on 13) The device of claim 13, wherein the detection device has at least one image sensor for detecting two-dimensional image information components, the image sensor comprising one or both of a CCD chip and a CMOS chip. ### Claim 18 (depends on 17) The device of claim 17, wherein the evaluation device is at least partly integrated in the image sensor. ### Claim 19 (depends on 13) The device of claim 13, wherein the optical information component is a two-dimensional optical information component. ### Claim 20 (depends on 13) The device of claim 13, wherein the optical information component includes a plurality of fields, and each field is filled with at least one grey-scale value up to the associated degree of filling. ### Claim 21 A medical disposable item comprising at least one coding, wherein the coding comprises an optical information component having a plurality of fields, each field filled with a gray-scale value up to a degree of filling wherein the gray-scale value and degree of filling for each field comprise a value pair determined in order to associate the two-dimensional optical information component with a code. ### Claim 22 (depends on 21) The medical disposable item of claim 21, wherein the medical disposable item comprises at least one of the following disposable items: a test element for detecting at least one analyte in a body fluid sample; and a lancet for producing a sample of a body fluid. ### Claim 23 (depends on 21) The medical disposable item of claim 21, wherein the coding comprises at least one item-specific information component concerning the medical disposable item. ### Claim 24 (depends on 23) The medical disposable item of claim 23, wherein the medical disposable item comprises a test strip or a test tape having at least one test field for analyzing at least one body fluid, wherein the test field is applied on a carrier, wherein the coding is likewise applied to the carrier. ### Claim 25 (depends on 21) The medical disposable item of claim 21, wherein the coding comprises a two-dimensional optical information component.