US20090326836A1 - Two dimensional bar code having increased accuracy - Google Patents
Two dimensional bar code having increased accuracy Download PDFInfo
- Publication number
- US20090326836A1 US20090326836A1 US12/311,054 US31105407A US2009326836A1 US 20090326836 A1 US20090326836 A1 US 20090326836A1 US 31105407 A US31105407 A US 31105407A US 2009326836 A1 US2009326836 A1 US 2009326836A1
- Authority
- US
- United States
- Prior art keywords
- matrix code
- code symbol
- data
- dark
- bar
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
- 239000011159 matrix material Substances 0.000 claims abstract description 73
- 239000007787 solid Substances 0.000 claims abstract description 33
- 238000005259 measurement Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
Definitions
- the present invention relates to two-dimensional bar codes. More specifically, the invention relates to a matrix code that provides increased accuracy.
- the “two dimensional bar code” was developed by NASA to identify and track space shuttle parts.
- the bar code pattern can be used to encode inventory data or a history of the object to which it is attached, as described in “A White Paper on Two Dimensional Symbols,” by Paul Mathans et al. (CSPI Vision Systems 1996).
- the “two-dimensional bar code” is more formally referred to as a matrix code, a term that applies to two-dimensional codes that code data based on the position of dark modules within a matrix. All of the dark modules are the same dimension, and it is the positions of the modules that code the data.
- Data Matrix is a type of two-dimensional matrix code containing dark and light square data modules. It is designed to pack a lot of information in a very small space; a Data Matrix symbol can store between one and 3116 numeric or 2335 alphanumeric characters.
- a Data Matrix symbol has a finder pattern of two solid bars and two alternating dark and light square data modules on the perimeter of the symbol. These patterns are used to indicate both orientation and printing density of the symbol.
- a two-dimensional imaging device such as a CCD camera is used to scan the symbology.
- Data Matrix symbol The information in a Data Matrix symbol is encoded by absolute dot position rather than relative dot position. While a Data Matrix symbol is easily scalable between a 1-mil square to a 14-inch square, the actual limits are dependent on the fidelity of the marking device and the optics of the sensor. Data Matrix symbols can be used for small item marking applications using a wide variety of printing and marking technologies.
- a matrix code symbol based on a conventional Data Matrix code, and comprising a two-dimensional matrix code containing dark and light square data modules, and a finder pattern of two solid bars and two bars of alternating dark and light square data modules on the perimeter of the symbol for indicating both orientation and printing density of the symbol, wherein all of the dark and light modules are the same dimension, and data is encoded based on the absolute position of the dark modules within the matrix.
- the matrix code symbol differs from a conventional Data Matrix code in the addition of inner and outer solid bars along the base and right-hand side of the matrix code symbol, the inner and outer solid bars each having a width equal to the square data modules, the inner solid bar being light and the outer solid bar being dark.
- the matrix code symbol differs from a conventional Data Matrix code in the addition of an inner solid bar and at least one outer encoding bar along the base and right-hand side of the matrix code symbol, the inner solid bar and the at least one outer encoding bar each having a width equal to the square data modules, the inner solid bar being light and the at least one outer encoding bar comprising a number of side-by-side data cells, wherein each data cell represents a single bit of binary data and the binary data is encoded using an error-correcting code (ECC) algorithm.
- ECC error-correcting code
- a strain gage in accordance with the present invention comprises a target associated with a body for which at least one of strain and fatigue damage is to be measured, sensor means for pre-processing a detectable physical quantity emitted by the target and output data representing the physical quantity, the sensor means being compatible with the detectable physical quantity, means for analyzing the data output by the sensor means to define the symbolic strain rosette, and means for measuring the strain on the body directly based on the pre-processed and analyzed data, wherein the target is a Symbolic Strain Rosette incorporated in one of the embodiments of the matrix code symbol.
- a symbolic strain rosette incorporated in one of the embodiments of the matrix code symbol is associated with an object in such a way that deformation of the symbolic strain rosette and deformation under load of the object bear a one-to-one relationship.
- the changes in the symbolic strain rosette are identified as a function of time and change in the load applied to the object.
- the changes in the symbolic strain rosette are then translated into a direct measurement of strain.
- FIG. 1 shows a first embodiment of a matrix code symbol in accordance with the present invention.
- FIG. 2 shows a second embodiment of a matrix code symbol in accordance with the present invention.
- FIGS. 1 and 2 respectively show first and second embodiments 100 and 200 of a matrix code symbol in accordance with the present invention. Both embodiments of the matrix code symbol are based on the Data Matrix code disclosed in U.S. Pat. Nos. 4,939,354; 5,053,609; and 5,124,536, and can incorporate a Symbolic Strain Rosette for use as a target in a compressed symbology strain gage as described in U.S. Pat. No. 6,934,013.
- the first embodiment of the matrix code symbol 100 (shown in FIG. 1 ) comprises a two-dimensional matrix code 110 containing dark and light square data modules 110 a and 110 b arranged in a matrix, and a finder pattern of two solid bars 120 and two bars 130 of alternating dark and light square data modules 130 a and 130 b on the perimeter of the matrix for indicating both orientation and printing density of the symbol 100 , wherein all of the dark and light modules 110 a, 110 b, 130 a, and 130 b are the same dimension, and data is encoded based on the absolute position of the dark modules 110 a within the matrix. As shown in FIG.
- the two solid bars 120 are on one pair of adjacent sides of the perimeter, and the two bars 130 of alternating dark and light data modules 130 a and 130 b are on the opposite pair of adjacent sides. There are no restrictions placed on the colors of the dark and light modules, except that sufficient contrast is provided to enable a sensor to determine module state (that is, “dark” or “light”).
- the first embodiment 100 of the matrix code symbol differs from a conventional Data Matrix code in the addition of inner and outer solid bars 140 and 150 along the base and right-hand side of the matrix code symbol, that is, adjacent to the two bars 130 of alternating dark and light square data modules 130 a and 130 b, as shown in FIG. 1 .
- the inner and outer solid bars 140 and 150 each have a width equal to the square data modules 110 a and 110 b, the inner solid bar 140 being light and the outer solid bar 150 being dark.
- the dark, outer solid bar 150 increases the accuracy of the use of the Data Matrix symbol but does not provide more encoded data.
- the first embodiment 100 of the matrix code symbol can incorporate the target of a strain gage as described in U.S. Pat. Nos. 6,874,370 and 6,934,013, the disclosures of which are incorporated herein by reference in their entireties.
- a strain gage employing the first embodiment uses the same theory and programs as the strain gage of U.S. Pat. No. 6,934,013. When used as such a target, the first embodiment increases the accuracy of the strain measurements made.
- the second embodiment 200 of the matrix code symbol ( FIG. 2 ) comprises a two-dimensional matrix 110 containing dark and light square data modules 110 a and 110 b, and a finder pattern of two solid bars 120 and two bars 130 of alternating dark and light square data modules 130 a and 130 b on the perimeter of the symbol 200 for indicating both orientation and printing density of the symbol, wherein all of the data modules 110 a, 110 b, 130 a, and 130 b are the same dimension and data is encoded based on the absolute position of the dark modules 110 a within the matrix.
- the second embodiment 200 of the matrix code symbol differs from a conventional Data Matrix code in the addition of an inner solid bar 140 and at least one outer encoding bar 250 along the base and right-hand side of the matrix code symbol 200 , that is, adjacent to the two bars 130 of alternating dark and light square data modules 130 a and 130 b, as shown in FIG. 2 .
- the inner solid bar 140 and the at least one outer encoding bar 250 each have a width equal to the square data modules 110 a, 110 b, 130 a, and 130 b, the inner solid bar being 140 light and the at least one outer encoding bar 250 being the same as a data region as described in U.S. Published Application No. 2006-0289652 A1 (Ser. No. 11/167,558, filed Mar.
- each data cell 250 represents a single bit of binary data and the binary data is encoded using an error-correcting code (ECC) algorithm.
- ECC error-correcting code
- the at least one outer encoding bar 250 is bounded by solid dark lines 250 b, which provide an outer boundary for the ECC algorithm and greater accuracy for strain measurement.
- the matrix code symbol 200 in accordance with the second embodiment of the invention can have a plurality of encoding bars 250 along the base and right-hand side.
- the encoding bars 250 permit the encoding of additional data and provide improved accuracy relative to a conventional Data Matrix symbol.
- the second embodiment 200 of the matrix code symbol can incorporate the target of a strain gage as described in U.S. Pat. Nos. 6,874,370 and 6,934,013.
- a strain gage employing the second embodiment also uses the same theory, algorithms, and computer programs as the strain gage of U.S. Pat. No. 6,934,013, which (1) identify the Symbolic Strain Rosette and the changes therein as a function of time and change in the load, (2) translate the changes in the Symbolic Strain Rosette into strain, and (3) display it in a suitable format.
- the second embodiment also increases the accuracy of the strain measurements made.
- the second embodiment also increases the accuracy of data that can be termed a “license plate” (because the encoded data can be used to identify a symbol being used to measure strain, much as a license plate can be used to identify a vehicle).
Abstract
Description
- The present patent application is based on, and claims priority from, U.S. provisional Application No. 60/60/838,151, 60/838,152, 60/838,153, 60/838,155, and 60/838,201, all filed Aug. 17, 2006, which are incorporated herein by reference in its entirety.
- 1. Field of the Invention
- The present invention relates to two-dimensional bar codes. More specifically, the invention relates to a matrix code that provides increased accuracy.
- 2. Related Art
- The “two dimensional bar code” was developed by NASA to identify and track space shuttle parts. The bar code pattern can be used to encode inventory data or a history of the object to which it is attached, as described in “A White Paper on Two Dimensional Symbols,” by Paul Mathans et al. (CSPI Vision Systems 1996).
- The “two-dimensional bar code” is more formally referred to as a matrix code, a term that applies to two-dimensional codes that code data based on the position of dark modules within a matrix. All of the dark modules are the same dimension, and it is the positions of the modules that code the data. Data Matrix is a type of two-dimensional matrix code containing dark and light square data modules. It is designed to pack a lot of information in a very small space; a Data Matrix symbol can store between one and 3116 numeric or 2335 alphanumeric characters. A Data Matrix symbol has a finder pattern of two solid bars and two alternating dark and light square data modules on the perimeter of the symbol. These patterns are used to indicate both orientation and printing density of the symbol. A two-dimensional imaging device such as a CCD camera is used to scan the symbology.
- The information in a Data Matrix symbol is encoded by absolute dot position rather than relative dot position. While a Data Matrix symbol is easily scalable between a 1-mil square to a 14-inch square, the actual limits are dependent on the fidelity of the marking device and the optics of the sensor. Data Matrix symbols can be used for small item marking applications using a wide variety of printing and marking technologies.
- Additional information regarding Data Matrix code is disclosed in U.S. Pat. Nos. 4,939,354; 5,053,609; 5,124,536.
- It is to the solution of these and other problems that the present invention is directed.
- It is accordingly a primary object of the present invention to provide a matrix code that has improved accuracy relative to a conventional Data Matrix code.
- This and other objects of the invention are achieved by the provision of a matrix code symbol based on a conventional Data Matrix code, and comprising a two-dimensional matrix code containing dark and light square data modules, and a finder pattern of two solid bars and two bars of alternating dark and light square data modules on the perimeter of the symbol for indicating both orientation and printing density of the symbol, wherein all of the dark and light modules are the same dimension, and data is encoded based on the absolute position of the dark modules within the matrix.
- In a first embodiment, the matrix code symbol differs from a conventional Data Matrix code in the addition of inner and outer solid bars along the base and right-hand side of the matrix code symbol, the inner and outer solid bars each having a width equal to the square data modules, the inner solid bar being light and the outer solid bar being dark.
- In a second embodiment, the matrix code symbol differs from a conventional Data Matrix code in the addition of an inner solid bar and at least one outer encoding bar along the base and right-hand side of the matrix code symbol, the inner solid bar and the at least one outer encoding bar each having a width equal to the square data modules, the inner solid bar being light and the at least one outer encoding bar comprising a number of side-by-side data cells, wherein each data cell represents a single bit of binary data and the binary data is encoded using an error-correcting code (ECC) algorithm.
- Both embodiments of the matrix code symbol can incorporate the target of a strain gage as described in application Ser. No. 10/890,994 and U.S. Pat. No. 6,934,013. A strain gage in accordance with the present invention comprises a target associated with a body for which at least one of strain and fatigue damage is to be measured, sensor means for pre-processing a detectable physical quantity emitted by the target and output data representing the physical quantity, the sensor means being compatible with the detectable physical quantity, means for analyzing the data output by the sensor means to define the symbolic strain rosette, and means for measuring the strain on the body directly based on the pre-processed and analyzed data, wherein the target is a Symbolic Strain Rosette incorporated in one of the embodiments of the matrix code symbol.
- In a method of measuring at least one of strain and fatigue damage on an object directly, in accordance with a present invention, a symbolic strain rosette incorporated in one of the embodiments of the matrix code symbol is associated with an object in such a way that deformation of the symbolic strain rosette and deformation under load of the object bear a one-to-one relationship. The changes in the symbolic strain rosette are identified as a function of time and change in the load applied to the object. The changes in the symbolic strain rosette are then translated into a direct measurement of strain.
- Other objects, features and advantages of the present invention will be apparent to those skilled in the art upon a reading of this specification including the accompanying drawings.
- The invention is better understood by reading the following Detailed Description of the Preferred Embodiments with reference to the accompanying drawing figures, in which like reference numerals refer to like elements throughout, and in which:
-
FIG. 1 shows a first embodiment of a matrix code symbol in accordance with the present invention. -
FIG. 2 shows a second embodiment of a matrix code symbol in accordance with the present invention. - In describing preferred embodiments of the present invention illustrated in the drawings, specific terminology is employed for the sake of clarity. However, the invention is not intended to be limited to the specific terminology so selected, and it is to be understood that each specific element includes all technical equivalents that operate in a similar manner to accomplish a similar purpose.
-
FIGS. 1 and 2 respectively show first andsecond embodiments - The first embodiment of the matrix code symbol 100 (shown in
FIG. 1 ) comprises a two-dimensional matrix code 110 containing dark and lightsquare data modules solid bars 120 and twobars 130 of alternating dark and lightsquare data modules symbol 100, wherein all of the dark andlight modules dark modules 110 a within the matrix. As shown inFIG. 1 , the twosolid bars 120 are on one pair of adjacent sides of the perimeter, and the twobars 130 of alternating dark andlight data modules - The
first embodiment 100 of the matrix code symbol differs from a conventional Data Matrix code in the addition of inner and outersolid bars bars 130 of alternating dark and lightsquare data modules FIG. 1 . The inner andouter solid bars square data modules solid bar 140 being light and the outersolid bar 150 being dark. The dark,outer solid bar 150 increases the accuracy of the use of the Data Matrix symbol but does not provide more encoded data. - The
first embodiment 100 of the matrix code symbol can incorporate the target of a strain gage as described in U.S. Pat. Nos. 6,874,370 and 6,934,013, the disclosures of which are incorporated herein by reference in their entireties. A strain gage employing the first embodiment uses the same theory and programs as the strain gage of U.S. Pat. No. 6,934,013. When used as such a target, the first embodiment increases the accuracy of the strain measurements made. - The
second embodiment 200 of the matrix code symbol (FIG. 2 ) comprises a two-dimensional matrix 110 containing dark and lightsquare data modules solid bars 120 and twobars 130 of alternating dark and lightsquare data modules symbol 200 for indicating both orientation and printing density of the symbol, wherein all of thedata modules dark modules 110 a within the matrix. Thesecond embodiment 200 of the matrix code symbol differs from a conventional Data Matrix code in the addition of an innersolid bar 140 and at least oneouter encoding bar 250 along the base and right-hand side of thematrix code symbol 200, that is, adjacent to the twobars 130 of alternating dark and lightsquare data modules FIG. 2 . The innersolid bar 140 and the at least oneouter encoding bar 250 each have a width equal to thesquare data modules outer encoding bar 250 being the same as a data region as described in U.S. Published Application No. 2006-0289652 A1 (Ser. No. 11/167,558, filed Mar. 24, 2006) comprising a number of side-by-side data cells 250 a, wherein eachdata cell 250 represents a single bit of binary data and the binary data is encoded using an error-correcting code (ECC) algorithm. The at least oneouter encoding bar 250 is bounded by soliddark lines 250 b, which provide an outer boundary for the ECC algorithm and greater accuracy for strain measurement. - Although the
second embodiment 200 as shown inFIG. 2 has oneencoding bar 250 along the base and right-hand side of the matrix code symbol, thematrix code symbol 200 in accordance with the second embodiment of the invention can have a plurality of encodingbars 250 along the base and right-hand side. The encoding bars 250 permit the encoding of additional data and provide improved accuracy relative to a conventional Data Matrix symbol. - The
second embodiment 200 of the matrix code symbol can incorporate the target of a strain gage as described in U.S. Pat. Nos. 6,874,370 and 6,934,013. A strain gage employing the second embodiment also uses the same theory, algorithms, and computer programs as the strain gage of U.S. Pat. No. 6,934,013, which (1) identify the Symbolic Strain Rosette and the changes therein as a function of time and change in the load, (2) translate the changes in the Symbolic Strain Rosette into strain, and (3) display it in a suitable format. When used as such a target, the second embodiment also increases the accuracy of the strain measurements made. The second embodiment also increases the accuracy of data that can be termed a “license plate” (because the encoded data can be used to identify a symbol being used to measure strain, much as a license plate can be used to identify a vehicle). - Modifications and variations of the above-described embodiments of the present invention are possible, as appreciated by those skilled in the art in light of the above teachings. It is therefore to be understood that, within the scope of the appended claims and their equivalents, the invention may be practiced otherwise than as specifically described.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/311,054 US20090326836A1 (en) | 2006-08-17 | 2007-08-16 | Two dimensional bar code having increased accuracy |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83815506P | 2006-08-17 | 2006-08-17 | |
US83815206P | 2006-08-17 | 2006-08-17 | |
US83820106P | 2006-08-17 | 2006-08-17 | |
US83815106P | 2006-08-17 | 2006-08-17 | |
US83815306P | 2006-08-17 | 2006-08-17 | |
US12/311,054 US20090326836A1 (en) | 2006-08-17 | 2007-08-16 | Two dimensional bar code having increased accuracy |
PCT/US2007/018185 WO2008021458A2 (en) | 2006-08-17 | 2007-08-16 | Two dimensional bar code having increased accuracy |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/018185 A-371-Of-International WO2008021458A2 (en) | 2006-08-17 | 2007-08-16 | Two dimensional bar code having increased accuracy |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/311,053 Continuation US8628023B2 (en) | 2006-08-17 | 2007-08-16 | Augmented binary code symbol |
US13/238,550 Continuation US8366011B2 (en) | 2006-08-17 | 2011-09-21 | Two dimensional bar code having increased accuracy |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090326836A1 true US20090326836A1 (en) | 2009-12-31 |
Family
ID=39082708
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/311,052 Active 2029-10-16 US8347727B2 (en) | 2006-08-17 | 2007-08-16 | Multi-format, binary code symbol for non-linear strain measurement |
US12/311,054 Abandoned US20090326836A1 (en) | 2006-08-17 | 2007-08-16 | Two dimensional bar code having increased accuracy |
US12/311,056 Active 2028-11-23 US8191784B2 (en) | 2006-08-17 | 2007-08-16 | High density, rectangular binary code symbol |
US12/311,055 Active 2029-04-13 US8322627B2 (en) | 2006-08-17 | 2007-08-16 | Nested binary code symbol |
US12/311,053 Active 2029-09-18 US8628023B2 (en) | 2006-08-17 | 2007-08-16 | Augmented binary code symbol |
US13/238,550 Active US8366011B2 (en) | 2006-08-17 | 2011-09-21 | Two dimensional bar code having increased accuracy |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/311,052 Active 2029-10-16 US8347727B2 (en) | 2006-08-17 | 2007-08-16 | Multi-format, binary code symbol for non-linear strain measurement |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/311,056 Active 2028-11-23 US8191784B2 (en) | 2006-08-17 | 2007-08-16 | High density, rectangular binary code symbol |
US12/311,055 Active 2029-04-13 US8322627B2 (en) | 2006-08-17 | 2007-08-16 | Nested binary code symbol |
US12/311,053 Active 2029-09-18 US8628023B2 (en) | 2006-08-17 | 2007-08-16 | Augmented binary code symbol |
US13/238,550 Active US8366011B2 (en) | 2006-08-17 | 2011-09-21 | Two dimensional bar code having increased accuracy |
Country Status (3)
Country | Link |
---|---|
US (6) | US8347727B2 (en) |
CA (5) | CA2696955C (en) |
WO (5) | WO2008021387A2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090242650A1 (en) * | 2008-03-27 | 2009-10-01 | Denso Wave Incorporated | Two-dimensional code having rectangular region provided with specific patterns for specification of cell postions and distinction from background |
WO2011126993A2 (en) * | 2010-04-06 | 2011-10-13 | D Naddor | Hd barcode |
US8459567B2 (en) | 2006-08-17 | 2013-06-11 | Direct Measurements, Inc. | Non-linear strain gage incorporating a nested binary code symbol |
US8746572B2 (en) * | 2011-03-17 | 2014-06-10 | Fujitsu Limited | Image processing apparatus and image processing method |
CN110514329A (en) * | 2019-08-08 | 2019-11-29 | 西安中星测控有限公司 | A kind of passive two-dimensional code load transducer and preparation method thereof |
CN110514330A (en) * | 2019-08-08 | 2019-11-29 | 西安中星测控有限公司 | A kind of passive two-dimensional code pressure sensor and preparation method thereof |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8347727B2 (en) * | 2006-08-17 | 2013-01-08 | Direct Measurements, Inc. | Multi-format, binary code symbol for non-linear strain measurement |
KR100809961B1 (en) * | 2006-08-29 | 2008-03-07 | 삼성전자주식회사 | Apparatus for data processing and method for processing data |
GB0714534D0 (en) * | 2007-07-26 | 2007-09-05 | Iti Scotland Ltd | Secure authentic feature |
US8307715B2 (en) | 2009-03-24 | 2012-11-13 | Direct Measurments, Inc. | Directly applied read and transmit—digital strain encoder and digital load cell |
US8689255B1 (en) | 2011-09-07 | 2014-04-01 | Imdb.Com, Inc. | Synchronizing video content with extrinsic data |
US9113128B1 (en) | 2012-08-31 | 2015-08-18 | Amazon Technologies, Inc. | Timeline interface for video content |
US8955021B1 (en) | 2012-08-31 | 2015-02-10 | Amazon Technologies, Inc. | Providing extrinsic data for video content |
US9389745B1 (en) | 2012-12-10 | 2016-07-12 | Amazon Technologies, Inc. | Providing content via multiple display devices |
US10424009B1 (en) | 2013-02-27 | 2019-09-24 | Amazon Technologies, Inc. | Shopping experience using multiple computing devices |
US20140267677A1 (en) | 2013-03-14 | 2014-09-18 | General Electric Company | Turbomachine component monitoring system and method |
WO2014178080A1 (en) * | 2013-05-03 | 2014-11-06 | Indian Council Of Medical Research | A non-contact method for measurement of strain profile at a location interposed within a soft deformable object with dynamic evolution of the strain under dynamic loading or fracture of the object |
US11019300B1 (en) | 2013-06-26 | 2021-05-25 | Amazon Technologies, Inc. | Providing soundtrack information during playback of video content |
JP5536951B1 (en) * | 2013-12-26 | 2014-07-02 | 進 辻 | Article with display code, display code reader and information transmission method |
US9838740B1 (en) | 2014-03-18 | 2017-12-05 | Amazon Technologies, Inc. | Enhancing video content with personalized extrinsic data |
WO2015181580A1 (en) * | 2014-05-27 | 2015-12-03 | Invenciones Tecnológicas Spa | Automated review of forms through augmented reality |
US9791865B2 (en) | 2014-10-29 | 2017-10-17 | Amazon Technologies, Inc. | Multi-scale fiducials |
US9710680B2 (en) | 2014-12-17 | 2017-07-18 | International Business Machines Corporation | Creating mechanical stamps to produce machine-readable optical labels |
US9483718B1 (en) | 2015-12-14 | 2016-11-01 | International Business Machines Corporation | Encoding and decoding data in two-dimensional symbology |
US10557372B2 (en) * | 2015-12-17 | 2020-02-11 | General Electric Company | Systems and methods for assessing strain of components in turbomachines |
US20170176269A1 (en) * | 2015-12-17 | 2017-06-22 | General Electric Company | Components with array-based strain sensors and methods for monitoring the same |
WO2019093194A1 (en) * | 2017-11-07 | 2019-05-16 | 住友電工焼結合金株式会社 | Iron-based sintered compact, method for laser-marking same, and method for producing same |
CN108716891B (en) * | 2018-04-28 | 2020-10-30 | 河南理工大学 | Rapid and accurate monitoring system and monitoring method for underground roadway surrounding rock deformation |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5726435A (en) * | 1994-03-14 | 1998-03-10 | Nippondenso Co., Ltd. | Optically readable two-dimensional code and method and apparatus using the same |
US5777309A (en) * | 1995-10-30 | 1998-07-07 | Intermec Corporation | Method and apparatus for locating and decoding machine-readable symbols |
US5811776A (en) * | 1996-02-26 | 1998-09-22 | Intermec Corporation | Method and apparatus for accurately locating data regions in stored images of symbols |
US5862267A (en) * | 1995-12-11 | 1999-01-19 | Intermec Ip Corp. | Method and apparatus for locating data regions in stored images of symbols |
US6267296B1 (en) * | 1998-05-12 | 2001-07-31 | Denso Corporation | Two-dimensional code and method of optically reading the same |
US20040036853A1 (en) * | 2002-08-20 | 2004-02-26 | Reginald Vachon | Compressed symbology strain gage |
US6802450B2 (en) * | 2002-08-07 | 2004-10-12 | Shenzhen Syscan Technology Co. Ltd | Guiding a scanning device to decode 2D symbols |
US6866199B1 (en) * | 2000-08-09 | 2005-03-15 | Eastman Kodak Company | Method of locating a calibration patch in a reference calibration target |
US6874370B1 (en) * | 2004-07-15 | 2005-04-05 | Reginald I. Vachon | Finite element analysis fatigue gage |
US20060017638A1 (en) * | 2004-07-26 | 2006-01-26 | John Guidon | Antenna system |
US20060231635A1 (en) * | 2002-10-31 | 2006-10-19 | Inconlab Inc. | Two-dimensional code having superior decoding property which is possible to control the level of error correcting codes, and method for encoding and decoding the same |
US7188778B2 (en) * | 2001-09-17 | 2007-03-13 | Codemagic | Machine-readable symbol and related method |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4924078A (en) * | 1987-11-25 | 1990-05-08 | Sant Anselmo Carl | Identification symbol, system and method |
US4896029A (en) * | 1988-04-08 | 1990-01-23 | United Parcel Service Of America, Inc. | Polygonal information encoding article, process and system |
US5053609A (en) | 1988-05-05 | 1991-10-01 | International Data Matrix, Inc. | Dynamically variable machine readable binary code and method for reading and producing thereof |
US5124536A (en) | 1988-05-05 | 1992-06-23 | International Data Matrix, Inc. | Dynamically variable machine readable binary code and method for reading and producing thereof |
US4939354A (en) | 1988-05-05 | 1990-07-03 | Datacode International, Inc. | Dynamically variable machine readable binary code and method for reading and producing thereof |
GB2296120A (en) * | 1994-12-13 | 1996-06-19 | Ibm | Barcode decoding |
JP2867904B2 (en) * | 1994-12-26 | 1999-03-10 | 株式会社デンソー | 2D code reader |
US6000614A (en) * | 1996-12-20 | 1999-12-14 | Denso Corporation | Two-dimensional code reading apparatus |
JPH10326331A (en) * | 1997-03-24 | 1998-12-08 | Olympus Optical Co Ltd | Recording medium with dot code, and code reader |
US6028889A (en) * | 1998-02-25 | 2000-02-22 | Lucent Technologies, Inc. | Pipelined fast hadamard transform |
US6244764B1 (en) * | 2000-01-21 | 2001-06-12 | Robotic Vision Systems, Inc. | Method for data matrix print quality verification |
US7154638B1 (en) * | 2000-05-23 | 2006-12-26 | Silverbrook Research Pty Ltd | Printed page tag encoder |
JP4301775B2 (en) * | 2002-07-18 | 2009-07-22 | シャープ株式会社 | Two-dimensional code reading device, two-dimensional code reading method, two-dimensional code reading program, and recording medium for the program |
US9271221B2 (en) * | 2004-06-22 | 2016-02-23 | Apple Inc. | Closed loop MIMO systems and methods |
US7252235B2 (en) * | 2004-12-16 | 2007-08-07 | Caterpillar Inc. | Barcode formed on a material |
US7477995B2 (en) * | 2005-02-03 | 2009-01-13 | Direct Measurements Inc. | Optical linear strain gage |
US7878415B2 (en) * | 2005-04-25 | 2011-02-01 | Direct Measurements Inc. | Segmented circular bar code |
US7533818B2 (en) * | 2005-06-28 | 2009-05-19 | Direct Measurements Inc. | Binary code symbol for non-linear strain measurement and apparatus and method for analyzing and measuring strain therewith |
US8347727B2 (en) * | 2006-08-17 | 2013-01-08 | Direct Measurements, Inc. | Multi-format, binary code symbol for non-linear strain measurement |
-
2007
- 2007-08-16 US US12/311,052 patent/US8347727B2/en active Active
- 2007-08-16 US US12/311,054 patent/US20090326836A1/en not_active Abandoned
- 2007-08-16 CA CA2696955A patent/CA2696955C/en active Active
- 2007-08-16 WO PCT/US2007/018045 patent/WO2008021387A2/en active Application Filing
- 2007-08-16 CA CA2696850A patent/CA2696850C/en active Active
- 2007-08-16 WO PCT/US2007/018184 patent/WO2008021457A2/en active Application Filing
- 2007-08-16 WO PCT/US2007/018042 patent/WO2008021384A2/en active Application Filing
- 2007-08-16 US US12/311,056 patent/US8191784B2/en active Active
- 2007-08-16 CA CA2696946A patent/CA2696946C/en active Active
- 2007-08-16 US US12/311,055 patent/US8322627B2/en active Active
- 2007-08-16 WO PCT/US2007/018177 patent/WO2008021452A2/en active Application Filing
- 2007-08-16 US US12/311,053 patent/US8628023B2/en active Active
- 2007-08-16 WO PCT/US2007/018185 patent/WO2008021458A2/en active Application Filing
- 2007-08-16 CA CA2696953A patent/CA2696953C/en active Active
- 2007-08-16 CA CA2696949A patent/CA2696949C/en active Active
-
2011
- 2011-09-21 US US13/238,550 patent/US8366011B2/en active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5726435A (en) * | 1994-03-14 | 1998-03-10 | Nippondenso Co., Ltd. | Optically readable two-dimensional code and method and apparatus using the same |
US5777309A (en) * | 1995-10-30 | 1998-07-07 | Intermec Corporation | Method and apparatus for locating and decoding machine-readable symbols |
US5862267A (en) * | 1995-12-11 | 1999-01-19 | Intermec Ip Corp. | Method and apparatus for locating data regions in stored images of symbols |
US5811776A (en) * | 1996-02-26 | 1998-09-22 | Intermec Corporation | Method and apparatus for accurately locating data regions in stored images of symbols |
US6267296B1 (en) * | 1998-05-12 | 2001-07-31 | Denso Corporation | Two-dimensional code and method of optically reading the same |
US6866199B1 (en) * | 2000-08-09 | 2005-03-15 | Eastman Kodak Company | Method of locating a calibration patch in a reference calibration target |
US7188778B2 (en) * | 2001-09-17 | 2007-03-13 | Codemagic | Machine-readable symbol and related method |
US6802450B2 (en) * | 2002-08-07 | 2004-10-12 | Shenzhen Syscan Technology Co. Ltd | Guiding a scanning device to decode 2D symbols |
US7028911B2 (en) * | 2002-08-07 | 2006-04-18 | Shenzhen Syscan Technology Co. Limited | Methods and systems for encoding and decoding data in 2D symbology |
US6934013B2 (en) * | 2002-08-20 | 2005-08-23 | Reginald Vachon | Compressed symbology strain gage |
US20040036853A1 (en) * | 2002-08-20 | 2004-02-26 | Reginald Vachon | Compressed symbology strain gage |
US20060231635A1 (en) * | 2002-10-31 | 2006-10-19 | Inconlab Inc. | Two-dimensional code having superior decoding property which is possible to control the level of error correcting codes, and method for encoding and decoding the same |
US6874370B1 (en) * | 2004-07-15 | 2005-04-05 | Reginald I. Vachon | Finite element analysis fatigue gage |
US20060017638A1 (en) * | 2004-07-26 | 2006-01-26 | John Guidon | Antenna system |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8459567B2 (en) | 2006-08-17 | 2013-06-11 | Direct Measurements, Inc. | Non-linear strain gage incorporating a nested binary code symbol |
US20090242650A1 (en) * | 2008-03-27 | 2009-10-01 | Denso Wave Incorporated | Two-dimensional code having rectangular region provided with specific patterns for specification of cell postions and distinction from background |
US8434690B2 (en) * | 2008-03-27 | 2013-05-07 | Denso Wave Incorporated | Two-dimensional code having rectangular region provided with specific patterns for specification of cell positions and distinction from background |
WO2011126993A2 (en) * | 2010-04-06 | 2011-10-13 | D Naddor | Hd barcode |
WO2011126993A3 (en) * | 2010-04-06 | 2011-12-29 | D Naddor | Hd barcode |
US8746572B2 (en) * | 2011-03-17 | 2014-06-10 | Fujitsu Limited | Image processing apparatus and image processing method |
CN110514329A (en) * | 2019-08-08 | 2019-11-29 | 西安中星测控有限公司 | A kind of passive two-dimensional code load transducer and preparation method thereof |
CN110514330A (en) * | 2019-08-08 | 2019-11-29 | 西安中星测控有限公司 | A kind of passive two-dimensional code pressure sensor and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CA2696850C (en) | 2013-08-06 |
US8628023B2 (en) | 2014-01-14 |
CA2696850A1 (en) | 2008-02-21 |
US8347727B2 (en) | 2013-01-08 |
US20100072288A1 (en) | 2010-03-25 |
WO2008021458A3 (en) | 2009-04-02 |
CA2696953C (en) | 2013-08-06 |
WO2008021457A2 (en) | 2008-02-21 |
US8366011B2 (en) | 2013-02-05 |
US20090306910A1 (en) | 2009-12-10 |
WO2008021384A2 (en) | 2008-02-21 |
CA2696955A1 (en) | 2008-02-21 |
WO2008021384A3 (en) | 2008-04-03 |
US8191784B2 (en) | 2012-06-05 |
CA2696946C (en) | 2013-05-28 |
CA2696949A1 (en) | 2008-02-21 |
CA2696949C (en) | 2014-07-08 |
CA2696946A1 (en) | 2008-02-21 |
WO2008021387A3 (en) | 2008-04-03 |
US20110049250A1 (en) | 2011-03-03 |
WO2008021452A2 (en) | 2008-02-21 |
WO2008021458A2 (en) | 2008-02-21 |
WO2008021387A2 (en) | 2008-02-21 |
CA2696953A1 (en) | 2008-02-21 |
US8322627B2 (en) | 2012-12-04 |
WO2008021452A3 (en) | 2008-10-02 |
US20090312961A1 (en) | 2009-12-17 |
CA2696955C (en) | 2013-08-13 |
US20120185182A1 (en) | 2012-07-19 |
WO2008021457A3 (en) | 2008-10-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8366011B2 (en) | Two dimensional bar code having increased accuracy | |
US8459567B2 (en) | Non-linear strain gage incorporating a nested binary code symbol | |
US20230037129A1 (en) | Two dimensional barcode with dynamic environmental data system, method, and apparatus | |
AU2008218929B2 (en) | Differential non-linear strain measurement using binary code symbol | |
EP1897036B1 (en) | Binary code symbol for non-linear strain measurement and method and apparatus for analyzing and measuring same | |
US7477995B2 (en) | Optical linear strain gage | |
US7673807B2 (en) | Multiple resolution readable color array | |
US20090020609A1 (en) | Sensor-embedded barcodes | |
EP3933662B1 (en) | Enhanced matrix symbol error correction method | |
KR102320597B1 (en) | Two-dimensional barcode, method and apparatus with dynamic environmental data system | |
US10860824B2 (en) | Measuring instrument, optical reader and optically-readable measure | |
WO2021021923A1 (en) | A two dimensional barcode provided with surrounding dynamic environmental indicator and color calibration reference |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DIRECT MEASUREMENTS, INC., GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOVIS, GREGORY;RANSON, WILLIAM;VACHON, REGINALD;REEL/FRAME:023849/0011;SIGNING DATES FROM 20091211 TO 20100111 Owner name: DIRECT MEASUREMENTS, INC.,GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOVIS, GREGORY;RANSON, WILLIAM;VACHON, REGINALD;SIGNING DATES FROM 20091211 TO 20100111;REEL/FRAME:023849/0011 Owner name: DIRECT MEASUREMENTS, INC., GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOVIS, GREGORY;RANSON, WILLIAM;VACHON, REGINALD;SIGNING DATES FROM 20091211 TO 20100111;REEL/FRAME:023849/0011 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, GEORGIA Free format text: PATENT SECURITY AGREEMENT;ASSIGNOR:DIRECT MEASUREMENTS, INC.;REEL/FRAME:031910/0922 Effective date: 20131220 |
|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, GEORGIA Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE NATURE OF CONVEYANCE FROM "PATENT SECURITY AGREEMENT" TO "PATENT ASSIGNMENT" PREVIOUSLY RECORDED ON REEL 031910 FRAME 0922. ASSIGNOR(S) HEREBY CONFIRMS THE PATENT ASSIGNMENT;ASSIGNOR:DIRECT MEASUREMENTS, INC.;REEL/FRAME:032239/0055 Effective date: 20131220 |
|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DIRECT MEASUREMENTS, INC;REEL/FRAME:033118/0280 Effective date: 20131220 |