WO2006093580A3 - Bar code signal processing - Google Patents

Bar code signal processing Download PDF

Info

Publication number
WO2006093580A3
WO2006093580A3 PCT/US2006/001771 US2006001771W WO2006093580A3 WO 2006093580 A3 WO2006093580 A3 WO 2006093580A3 US 2006001771 W US2006001771 W US 2006001771W WO 2006093580 A3 WO2006093580 A3 WO 2006093580A3
Authority
WO
WIPO (PCT)
Prior art keywords
bar code
code signal
signal processing
transfer function
gaussian
Prior art date
Application number
PCT/US2006/001771
Other languages
French (fr)
Other versions
WO2006093580A2 (en
Inventor
Dariusz Madej
Original Assignee
Symbol Technologies Inc
Dariusz Madej
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Symbol Technologies Inc, Dariusz Madej filed Critical Symbol Technologies Inc
Priority to CA2596797A priority Critical patent/CA2596797C/en
Priority to AU2006219093A priority patent/AU2006219093B2/en
Publication of WO2006093580A2 publication Critical patent/WO2006093580A2/en
Publication of WO2006093580A3 publication Critical patent/WO2006093580A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum

Abstract

A low pass filter that approximates a Gaussian transfer function filters the analog bar code signal prior to digitization is used to smooth the bar code signal. The Gaussian filter has a transfer function that compensates for beam distortion close in to the bar code scanner. The smoothed bar code signal is provided to the digitizer to improve the efficiency with which the bar code signal can be digitized.
PCT/US2006/001771 2005-02-25 2006-01-19 Bar code signal processing WO2006093580A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2596797A CA2596797C (en) 2005-02-25 2006-01-19 Bar code signal processing
AU2006219093A AU2006219093B2 (en) 2005-02-25 2006-01-19 Bar code signal processing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/066,829 US7204423B2 (en) 2005-02-25 2005-02-25 Bar code signal processing
US11/066,829 2005-02-25

Publications (2)

Publication Number Publication Date
WO2006093580A2 WO2006093580A2 (en) 2006-09-08
WO2006093580A3 true WO2006093580A3 (en) 2007-03-08

Family

ID=36931171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/001771 WO2006093580A2 (en) 2005-02-25 2006-01-19 Bar code signal processing

Country Status (4)

Country Link
US (1) US7204423B2 (en)
AU (1) AU2006219093B2 (en)
CA (1) CA2596797C (en)
WO (1) WO2006093580A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8047440B2 (en) * 2005-05-26 2011-11-01 Symbol Technologies, Inc. Method and system for decoding a barcode
US7784696B2 (en) * 2006-06-09 2010-08-31 Hand Held Products, Inc. Indicia reading apparatus having image sensing and processing circuit
US7740176B2 (en) * 2006-06-09 2010-06-22 Hand Held Products, Inc. Indicia reading apparatus having reduced trigger-to-read time
CN102289653A (en) * 2011-08-29 2011-12-21 我查查信息技术(上海)有限公司 Method for increasing identification rate of optical identifier and optical identifier
BR112013013539B1 (en) * 2013-05-28 2023-03-07 Sicpa Holding Sa METHOD OF DETECTING A TWO-DIMENSIONAL BARCODE IN BARCODE IMAGE DATA, BARCODE READING DEVICE AND NON-TRANSIENT COMPUTER READABLE MEDIA STORING CODE
TW201531951A (en) * 2014-02-07 2015-08-16 Cipherlad Co Ltd A method for dynamically switchable reading barcode

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6443360B1 (en) * 2000-12-21 2002-09-03 Datalogic S.P.A. Method and device for focusing an electrical signal representative of an optical code

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360798A (en) * 1978-05-31 1982-11-23 Symbol Technologies, Inc. Portable laser scanning arrangement for and method of evaluating and validating bar code symbols
US4251798A (en) * 1978-05-31 1981-02-17 Symbol Technologies Portable laser scanning arrangement for and method of evaluating and validating bar code symbols
US4387297B1 (en) * 1980-02-29 1995-09-12 Symbol Technologies Inc Portable laser scanning system and scanning methods
US4369361A (en) * 1980-03-25 1983-01-18 Symbol Technologies, Inc. Portable, stand-alone, desk-top laser scanning workstation for intelligent data acquisition terminal and method of scanning
US4460120A (en) * 1982-01-25 1984-07-17 Symbol Technologies, Inc. Narrow bodied, single- and twin-windowed portable laser scanning head for reading bar code symbols
US4409470A (en) * 1982-01-25 1983-10-11 Symbol Technologies, Inc. Narrow-bodied, single-and twin-windowed portable laser scanning head for reading bar code symbols

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6443360B1 (en) * 2000-12-21 2002-09-03 Datalogic S.P.A. Method and device for focusing an electrical signal representative of an optical code

Also Published As

Publication number Publication date
US7204423B2 (en) 2007-04-17
CA2596797C (en) 2013-05-14
US20060192011A1 (en) 2006-08-31
AU2006219093A1 (en) 2006-09-08
CA2596797A1 (en) 2006-09-08
WO2006093580A2 (en) 2006-09-08
AU2006219093B2 (en) 2009-05-21

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