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WO2002031749A1 - Scanneur de code barres pour afficheur acl capable de scanner un code barres d'un afficheur acl - Google Patents

Scanneur de code barres pour afficheur acl capable de scanner un code barres d'un afficheur acl Download PDF

Info

Publication number
WO2002031749A1
WO2002031749A1 PCT/KR2001/000174 KR0100174W WO0231749A1 WO 2002031749 A1 WO2002031749 A1 WO 2002031749A1 KR 0100174 W KR0100174 W KR 0100174W WO 0231749 A1 WO0231749 A1 WO 0231749A1
Authority
WO
WIPO (PCT)
Prior art keywords
barcode
scanner
microprocessor
light
liquid crystal
Prior art date
Application number
PCT/KR2001/000174
Other languages
English (en)
Korean (ko)
Inventor
Young-Cheol Shin
Chang-Hwan Oh
Hyuck-Jin Gwon
Doo-Seop Eom
Original Assignee
Secubay Corp.
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 Secubay Corp. filed Critical Secubay Corp.
Priority to JP2002535059A priority Critical patent/JP2004511861A/ja
Priority to AU2001232406A priority patent/AU2001232406A1/en
Publication of WO2002031749A1 publication Critical patent/WO2002031749A1/fr

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
    • G06K7/10544—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
    • G06K7/10821—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 further details of bar or optical code scanning devices
    • G06K7/1095—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 further details of bar or optical code scanning devices the scanner comprising adaptations for scanning a record carrier that is displayed on a display-screen or the like
    • 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
    • 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
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning

Definitions

  • the present invention relates in general to scanner systems for recognizing barcodes displayed on liquid crystal displays (LCDs) of mobile terminals such as a cellular phone, PDA and pager, and more particularly to an LCD barcode scanner which is capable of scanning and decoding customer information displayed on LCDs of mobile terminals in the form of barcodes, thereby identifying customers accurately, simply and conveniently.
  • LCDs liquid crystal displays
  • a barcode is prescribed to be a single character by the combination of a plurality of black and white bars having different thicknesses in a specific ratio, and a device for reading and decoding the barcode is called a barcode scanner.
  • barcodes have widely been used in supermarkets or large-scale stores to indicate the prices of commodities.
  • a barcode writer must first be provided for management of commodities based on barcodes. Barcodes are printed and attached to associated commodities. When a specific commodity is purchased by a customer, its price can be checked by scanning a barcode attached thereto. As a result, the use of barcodes enables associated information to be simply and conveniently checked within a brief period of time.
  • cards having barcodes for customer identification written thereon are more often used than a method of entering names and resident registration numbers of customers one by one.
  • conventional scanners must comprise an RC signal generator for generating a signal to drive a charge coupled device (CCD) sensor, and a sample/hold circuit for setting synchronization of the signal generation, resulting in an oscillation circuit and a frequency divider being in turn required.
  • CCD charge coupled device
  • sample/hold circuit for setting synchronization of the signal generation, resulting in an oscillation circuit and a frequency divider being in turn required.
  • the conventional scanners are complex in construction and occupy large areas, thereby increasing the cost and making the precise control difficult.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a liquid crystal display barcode scanner which is capable of scanning and decoding customer information displayed on liquid crystal displays of mobile terminals in the form of barcodes, thereby identifying customers accurately, simply and conveniently.
  • a liquid crystal display barcode scanner comprising a trigger switch for starting a barcode scanning operation of the scanner; a memory for storing firmware for control of respective components in the scanner; a microprocessor for controlling the operations of the respective components in the scanner according to the firmware stored in the memory, the microprocessor adapted to control light emission and barcode signal detection operations in response to a switching operation of the trigger switch, decode liquid crystal display barcode information inputted thereto and control the transfer of the decoded barcode information to an external unit; a light source including a light emitting diode for emitting light of a red wavelength to a liquid crystal display barcode to be scanned, under the control of the microprocessor; a lens/optical filter for condensing light reflected from the liquid crystal display barcode; a charge coupled device sensor for converting the intensity of the light condensed by the lens/optical filter into an electrical signal; a signal detector for amplifying an analog signal from the charge coupled
  • Fig. 1 is a block diagram showing the construction of a liquid crystal display barcode scanner in accordance with the present invention
  • Fig. 2 is a waveform diagram illustrating liquid crystal display barcode information and digital signals corresponding thereto; and Fig. 3 is a view showing the outer appearance of the liquid crystal display barcode scanner of Fig. 1. Best Mode for Carrying Out the Invention
  • This invention provides a liquid crystal display (LCD) barcode scanner capable of decoding barcodes displayed on LCDs of mobile terminals such as a cellular phone, PDA and pager as well as existing printed barcodes such that it is applicable to Internet services based on wireless networks.
  • LCD liquid crystal display
  • the contents of barcodes displayed on LCDs of mobile terminals such as a cellular phone, PDA and pager can be modified over wireless networks at any time because the barcodes are able to be decoded by the present LCD barcode scanner.
  • This LCD barcode scanner is applicable to Internet customer management systems using customer management cards, coupons, tickets and the like.
  • the LCD barcode scanner comprises a trigger switch TSW for starting a barcode scanning operation of the. scanner, a memory 10 for storing firmware for control of respective components in the scanner, and a microprocessor 20 for controlling the operations of the respective components in the scanner according to the firmware stored in the memory 10.
  • the microprocessor 20 is adapted to control light emission and barcode signal detection operations in response to a switching operation of the trigger switch TSW, decode LCD barcode information inputted thereto and control the transfer of the decoded barcode information to an external unit.
  • the LCD barcode scanner further comprises a light emitting diode (LED) light source 30 for emitting light of a red wavelength (660nm) to an LCD barcode to be scanned, under the control of the microprocessor 20, a lens/optical filter 40 for condensing light reflected from the LCD barcode, a charge coupled device (CCD) sensor 50 for converting the intensity of the light condensed by the lens/optical filter 40 into an electrical signal, a signal detector 60 for amplifying an analog signal from the CCD sensor 50, converting the amplified analog signal into a digital signal and outputting the converted digital signal to the microprocessor 20, and an input/output (I/O) driver 70 for transferring the barcode information decoded by the microprocessor 20 to the external unit under the control of the microprocessor 20.
  • LED light emitting diode
  • a lens/optical filter 40 for condensing light reflected from the LCD barcode
  • CCD charge coupled device
  • signal detector 60 for amplifying an analog signal from the CCD
  • the memory 10 is a storage unit for storing firmware used in this invention.
  • the firmware is used to program a compensation function for calculation of bar widths of the barcode.
  • the firmware of the present invention for a barcode expressed in two columns due to a limited width of an LCD of a mobile terminal, both the first and second columns can be read and transferred to a computer.
  • the firmware has a maintenance function and test function of the present invention so that a user can not only simply maintain the scanner but also a developer can readily test the scanner when a new function is additionally provided.
  • the microprocessor 20 functions to monitor an output signal from the trigger switch TSW when the user starts to scan and to display the current state of the scanner on a display unit 100 to inform the user of that state.
  • the microprocessor 20 further functions to generate a signal for control of the LED light source 30 and a pulse signal for CCD control.
  • the microprocessor 20 is adapted to decode a digital signal from the signal detector 60, corresponding to a barcode, and transfers the decoded result to a computer or host unit.
  • the LED light source 30 functions to emit light of a red wavelength (660nm) to a barcode in response to a control signal generated from the microprocessor 20 when the user pushes the trigger switch TSW to scan the barcode.
  • the lens/optical filter 40 functions to condense light reflected from a barcode displayed on an LCD of a mobile terminal such as a cellular phone, PDA and pager as well as a barcode printed on paper.
  • the lens/optical filter 40 further functions to remove noise components from light reflected from a given barcode.
  • scanners can receive light reflected from an object in two methods, one being a contact method wherein a window rubber is brought into contact with the object and the other being a noncontact (long-range) method wherein the window rubber is not brought into contact with the object.
  • the present invention employs the noncontact method in that the object, or barcode, is projected under a protective film of an LCD of a mobile terminal such as a cellular phone, PDA and pager.
  • the present scanner may have a limitation in accurately expressing a given barcode (on the basis of a thickness ratio) , due to light reflection by an LCD protective film, LCD backlight, a surface reflectivity of the LCD and a minimum display resolution (a one dot unit) of the LCD.
  • the present invention employs the noncontact method to compensate for a distance between the scanner and the object (to" secure the margin of a DOF (Depth of Field) ) . Further, this invention enhances the condensing capability of a lens (with respect to a light source and a CCD sensor) .
  • the CCD sensor 50 functions to convert the intensity of the light condensed by the lens/optical filter 40 into a voltage level in such a manner that it generates current of a high voltage level for each white bar of an LCD barcode because it reflects a large amount of light, and little current for each black bar of the LCD barcode because it absorbs emitted light.
  • a two-phase clock signal and four control signals (pulses) are necessary for the operation of the CCD sensor 50. In the present invention, these signals are generated under the control of the microprocessor 20.
  • the CCD sensor in this invention is advantageous in that it is uniform in sensing characteristic and can receive barcode information under the condition of noncontact with an object, because it has a large number of photodiodes arranged on the X axis. ,
  • the signal detector 60 functions to convert a weak electrical signal from the CCD sensor 50 into a digital signal using an analog amplifier and an electrical filter.
  • the analog amplifier may preferably include an operational amplifier (OP AMP) .
  • the electrical filter is adapted to remove electrical noise components generated during the optical/electrical conversion by the CCD sensor.
  • the signal detector 60 digitalizes the electrical signal to +5V if it is higher than or equal to a reference voltage and 0V if it is lower than the reference voltage, so that such digital signals can be monitored by the microprocessor 20.
  • the I/O driver 70 functions to transfer the barcode contents decoded by the microprocessor 20 to a personal computer (PC) or host unit via a keyboard (K/B) or RS-232C interface.
  • the microprocessor 20 further functions to control the output of a specific sound and specific light whenever the barcode scanning operation is completed.
  • the LCD barcode scanner further comprises a completion sound output unit 80 for outputting a specific sound indicative of the barcode scanning completion, and a completion light output unit 90 for outputting specific light indicative of the barcode scanning completion.
  • the LCD barcode scanner further comprises a display unit 100 for displaying the scanning state of the scanner on a screen.
  • the microprocessor 20 controls the display unit 100 to display information relating to the scanning state of the scanner.
  • Fig. 2 is a waveform diagram illustrating LCD barcode information and digital signals corresponding thereto.
  • a barcode consists of alternating gray bars (or white bars) and black bars having a predetermined thickness ratio to express the contents of the barcode.
  • Fig. 3 is a view showing the outer appearance of the LCD barcode scanner of Fig. 1.
  • the trigger switch TSW is installed on the external surface of the LCD barcode scanner to provide a trigger signal to the microprocessor 20 in the scanner so as to start the scanning operation of the scanner.
  • the microprocessor 20 in the scanner recognizes the pushed state of the trigger switch TSW and controls the operations of the respective components including the LED light source 30.
  • the LED light' source 30 emits light of a red wavelength (660nm) to an LCD barcode to be scanned, under the control of the microprocessor 20. Then, the light emitted to the barcode is reflected therefrom at an intensity corresponding to information contained in the barcode. The reflected light is condensed by the lens/optical filter 40 and transferred to the CCD sensor 50.
  • the CCD sensor 50 converts a weak optical signal transferred by the lens/optical filter 40 into an electrical analog signal and feeds the converted analog signal to the signal detector 60.
  • the signal detector 60 amplifies the analog signal from the CCD sensor 50 by a predetermined level, converts the amplified analog signal into a digital signal decodable by the microprocessor 20 and outputs the converted digital signal to the microprocessor 20.
  • the microprocessor 20 Upon receiving the digital signal from the signal detector 60, the microprocessor 20 decodes it and provides the decoded data to the I/O driver 70 for its transfer to an external unit. Thereafter, the I/O driver 70 transfers the decoded data of the LCD barcode to the external unit.
  • the decoded barcode data is transferred to a computer or host unit over a signal line connected to the tail of the scanner.
  • the scanner has a Bluetooth function to transfer barcode data wirelessly to the computer or host unit.
  • This Bluetooth function can solve a distance limitation between the scanner and the host computer, thereby enabling the transfer of data of a barcode displayed on an LCD of a remote mobile terminal such as a cellular phone, PDA and pager to the host computer.
  • the microprocessor 20 controls the output of a completion sound when the barcode scanning operation is completed.
  • the completion sound output unit 80 outputs a specific sound indicative of the barcode scanning completion, for example, "whistling" under the control of the microprocessor 20.
  • the microprocessor 20 controls the output of completion light when the barcode scanning operation is completed.
  • the completion light output unit or indicator 90 which may be, for example, a light emitting diode installed on the head of the scanner, outputs specific light indicative of the barcode scanning completion, for example, "green light” or “red light” under the control of the microprocessor 20. Therefore, upon completing the barcode scanning operation, the LCD barcode scanner of the present invention turns on/off light for a short time with whistling, so that the user can easily recognize the completion of the scanning operation.
  • the present invention provides a liquid crystal display (LCD) barcode scanner having effects summarized as follows.
  • the LCD barcode scanner can decode barcodes displayed on LCDs of mobile terminals such as a cellular phone, PDA and pager as well as printed barcodes.
  • the merit of the LCD barcodes can reduce an error rate upon repetitive use.
  • the scanning of barcodes on LCDs of mobile terminals enables the writing of barcodes through the Internet. Therefore, the LCD barcode scanner is applicable to customer management systems based on the Internet.
  • the decoding of LCD barcodes using a Bluetooth function enables the scanning of barcodes at a place distant from a host computer.
  • a user of the scanner can readily check through an LCD of a mobile terminal of a customer whether the customer is a member, even though the customer is away from the host computer.
  • this LCD barcode scanner is applicable to Internet customer management systems using customer management cards, coupons, tickets and the like, in that it can decode barcodes on LCDs of mobile terminals.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Artificial Intelligence (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Cash Registers Or Receiving Machines (AREA)
  • Telephone Function (AREA)
  • Selective Calling Equipment (AREA)

Abstract

L'invention concerne un scanneur servant à reconnaître des codes barres affichés sur des affichages à cristaux liquides de terminaux mobiles, tels qu'un téléphone cellulaire, un assistant numérique personnel et un téléavertisseur. Le scanneur de codes barres pour afficheur ACL peut scanner et décoder une information de client affichée sur les affichages ACL des terminaux mobiles sous forme de codes barres, ce qui permet d'identifier des clients de manière précise, simple et adéquate.
PCT/KR2001/000174 2000-10-13 2001-02-07 Scanneur de code barres pour afficheur acl capable de scanner un code barres d'un afficheur acl WO2002031749A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002535059A JP2004511861A (ja) 2000-10-13 2001-02-07 液晶ディスプレイバーコードを走査することができる液晶ディスプレイバーコードスキャナー
AU2001232406A AU2001232406A1 (en) 2000-10-13 2001-02-07 Lcd barcode scanner with capability of scanning lcd barcode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2000-60185 2000-10-13
KR1020000060185A KR20020009379A (ko) 2000-10-13 2000-10-13 액정 바코드 스캔기능을 구비한 무선 바코드 스캐너

Publications (1)

Publication Number Publication Date
WO2002031749A1 true WO2002031749A1 (fr) 2002-04-18

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ID=19693268

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Application Number Title Priority Date Filing Date
PCT/KR2001/000174 WO2002031749A1 (fr) 2000-10-13 2001-02-07 Scanneur de code barres pour afficheur acl capable de scanner un code barres d'un afficheur acl

Country Status (4)

Country Link
JP (1) JP2004511861A (fr)
KR (1) KR20020009379A (fr)
AU (1) AU2001232406A1 (fr)
WO (1) WO2002031749A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1320816A1 (fr) * 2000-09-29 2003-06-25 Secubay Corp. Systeme et procede de gestion integree de la clientele utilisant un code a barres sur un terminal radio
GB2392286A (en) * 2002-08-19 2004-02-25 Chunghwa Telecom Co Ltd Reading barcodes from PDA/cell phone screen
WO2004017624A1 (fr) * 2002-07-19 2004-02-26 Cognex Ltd. Appareil de prise de vue, procede de prise de vue d'une image visualisee sur un ecran, ensemble constitue d'une unite de prise de vue et d'un ecran et utilisation de cet appareil de prise de vue et dudit ensemble
FR2867650A1 (fr) * 2003-12-10 2005-09-16 Cegetel Groupe Procede et terminaux communicants pour l'identification d'eligibilite d'un utilisateur par un code a barres
GB2414098A (en) * 2004-05-13 2005-11-16 Hewlett Packard Development Co Data transfer with camera-enabled devices
WO2005111913A1 (fr) 2004-05-10 2005-11-24 Tesa Scribos Gmbh Appareil de lecture concu pour extraire des lithogrammes produits par ordinateur
GB2420436A (en) * 2004-11-20 2006-05-24 Trinity Mobile Ltd Mobile phone displaying a photograph combined with a bar code for user identification
WO2007009005A1 (fr) * 2005-07-13 2007-01-18 Intermec Ip Corp. Reduction du bruit par soustraction d'image dans un dispositif de collecte automatique de donnees, tel qu'un dispositif d'acquisition d'image
EP1809013A1 (fr) * 2002-07-19 2007-07-18 Gavitec AG Appareil de lecture de code
US8059181B2 (en) 2006-08-17 2011-11-15 Samsung Electronics Co., Ltd Apparatus and method for data transmission/reception
CN103942064A (zh) * 2013-12-31 2014-07-23 上海天马微电子有限公司 一种显示面板的识别信息的处理方法和显示面板
WO2019211582A1 (fr) * 2018-05-03 2019-11-07 Oxford University Innovation Limited Procédé et appareil de masquage optique
US11507360B2 (en) 2020-03-31 2022-11-22 Caterpillar Inc. Automatically obtaining sensor data for machine update

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4165522B2 (ja) 2005-04-27 2008-10-15 ブラザー工業株式会社 画像読取装置
KR100861065B1 (ko) * 2008-03-26 2008-09-30 삼성전자주식회사 데이터 송수신 장치 및 방법

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JPS625430A (ja) * 1985-07-01 1987-01-12 Stanley Electric Co Ltd デジタルデ−タの出力装置
US5003251A (en) * 1989-09-12 1991-03-26 Grumman Aerospace Corporation Bar code reader for printed circuit board
JPH05233867A (ja) * 1992-02-20 1993-09-10 Olympus Optical Co Ltd バーコード読取装置
US5789732A (en) * 1995-06-08 1998-08-04 Mcmahon; Steven A. Portable data module and system for consumer transactions

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS625430A (ja) * 1985-07-01 1987-01-12 Stanley Electric Co Ltd デジタルデ−タの出力装置
US5003251A (en) * 1989-09-12 1991-03-26 Grumman Aerospace Corporation Bar code reader for printed circuit board
JPH05233867A (ja) * 1992-02-20 1993-09-10 Olympus Optical Co Ltd バーコード読取装置
US5789732A (en) * 1995-06-08 1998-08-04 Mcmahon; Steven A. Portable data module and system for consumer transactions

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1320816A1 (fr) * 2000-09-29 2003-06-25 Secubay Corp. Systeme et procede de gestion integree de la clientele utilisant un code a barres sur un terminal radio
EP1320816A4 (fr) * 2000-09-29 2006-01-18 Mobiro Co Ltd Systeme et procede de gestion integree de la clientele utilisant un code a barres sur un terminal radio
WO2004017624A1 (fr) * 2002-07-19 2004-02-26 Cognex Ltd. Appareil de prise de vue, procede de prise de vue d'une image visualisee sur un ecran, ensemble constitue d'une unite de prise de vue et d'un ecran et utilisation de cet appareil de prise de vue et dudit ensemble
US7581682B2 (en) 2002-07-19 2009-09-01 Gavitec Ag Image-recording device, method for recording an image that is visualized on a display unit, arrangement of an image-recording device and a display unit, use of said image-recording device, and use of said arrangement
EP1809013A1 (fr) * 2002-07-19 2007-07-18 Gavitec AG Appareil de lecture de code
GB2392286A (en) * 2002-08-19 2004-02-25 Chunghwa Telecom Co Ltd Reading barcodes from PDA/cell phone screen
GB2392286B (en) * 2002-08-19 2004-07-07 Chunghwa Telecom Co Ltd Personal identification system based on the reading of multiple one-dimensional barcodes scanned from scanned from PDA/cell phone screen
FR2867650A1 (fr) * 2003-12-10 2005-09-16 Cegetel Groupe Procede et terminaux communicants pour l'identification d'eligibilite d'un utilisateur par un code a barres
US7475820B2 (en) 2004-05-10 2009-01-13 Tesa Scribos Gmbh Reader for reading computer-generated lithograms
WO2005111913A1 (fr) 2004-05-10 2005-11-24 Tesa Scribos Gmbh Appareil de lecture concu pour extraire des lithogrammes produits par ordinateur
US8167206B2 (en) 2004-05-10 2012-05-01 Tesa Scribos Gmbh Reader for reading computer-generated lithograms
GB2414098A (en) * 2004-05-13 2005-11-16 Hewlett Packard Development Co Data transfer with camera-enabled devices
GB2420436A (en) * 2004-11-20 2006-05-24 Trinity Mobile Ltd Mobile phone displaying a photograph combined with a bar code for user identification
WO2007009005A1 (fr) * 2005-07-13 2007-01-18 Intermec Ip Corp. Reduction du bruit par soustraction d'image dans un dispositif de collecte automatique de donnees, tel qu'un dispositif d'acquisition d'image
US8295640B2 (en) 2005-07-13 2012-10-23 Intermec Ip Corp. Noise reduction by image subtraction in an automatic data collection device, such as an image acquisition device
US8059181B2 (en) 2006-08-17 2011-11-15 Samsung Electronics Co., Ltd Apparatus and method for data transmission/reception
CN103942064A (zh) * 2013-12-31 2014-07-23 上海天马微电子有限公司 一种显示面板的识别信息的处理方法和显示面板
WO2019211582A1 (fr) * 2018-05-03 2019-11-07 Oxford University Innovation Limited Procédé et appareil de masquage optique
EP3788440A1 (fr) * 2018-05-03 2021-03-10 Oxford University Innovation Limited Procédé et appareil de masquage optique
US11507360B2 (en) 2020-03-31 2022-11-22 Caterpillar Inc. Automatically obtaining sensor data for machine update

Also Published As

Publication number Publication date
KR20020009379A (ko) 2002-02-01
JP2004511861A (ja) 2004-04-15
AU2001232406A1 (en) 2002-04-22

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