[특허]Omnidirectional scanning method and apparatus

[미국특허] Omnidirectional scanning method and apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06K-007/10
출원번호	US-0519598 (1995-08-25)
발명자 / 주소	Cherry Craig D. (Eugene OR) Actis Robert J. (Eugene OR)
출원인 / 주소	Spectra-Physics Scanning Systems, Inc. (Eugene OR 02)
인용정보	피인용 횟수 : 67 인용 특허 : 0

초록 ▼

A method and apparatus for reading encoded symbols such as bar code labels at any orientation to a raster scanning device. A pattern of virtual scan lines is selected over the two-dimensional imaging region according to the specifications of the images to be read. The pattern is generated by defining a family of parallel lines of a certain spacing and rotating the family by a specified angle until the two-dimensional imaging region is covered. Only the data at selected raster locations on the virtual scan lines is stored and processed. One-dimensional signal processing methods are used to detect edges and decode the encoded symbols.

대표청구항 ▼

A method for reading a symbol having lighter and darker regions, comprising the steps of: collecting light reflected from a symbol; focusing said light onto a multi-dimensional imaging array, said multi-dimensional imaging array comprising a plurality of pixels; storing, in a plurality of digital arrays, information corresponding to the intensity of light detected at selected ones of said pixels, each digital array corresponding to one of a plurality of scan lines; separately for each digital array, converting said stored information into an analog signal; filtering said analog signal with a low pass filter to produce a filtered signal, said filtered signal having transitions in signal level corresponding to lighter and darker regions in said symbol; and detecting said transitions in said filtered signal.

이 특허를 인용한 특허 (67) 인용/피인용 타임라인 분석

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Nelson, David J., Articles bearing invisible encodements on curved surfaces.
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Harris, Scott C., Barcode device.
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Harris, Scott C., Barcode device.
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Harris, Scott C., Barcode device.
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Harris, Scott C., Barcode device.
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Tafoya Benny R., CCD-base bar code scanner.
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Shearer Frank W., CCD-based bar code scanner.
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Tafoya Benny R., CCD-based bar code scanner.
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Rudeen, Robert William; Gao, WenLiang; Olmstead, Bryan L., Compensated virtual scan lines.
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Actis, Robert J., Continuous virtual scan line pattern generation.
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Olmstead, Bryan L.; Shearin, Alan, Extended depth of field imaging system using chromatic aberration.
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Schnee,Michael D.; Zhu,Xiaoxun; Knowles,C. Harry, Imaging engine employing planar light illumination and linear imaging.
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Olmstead, Bryan L.; Shearin, Alan, Imaging system with a lens having increased light collection efficiency and a deblurring equalizer.
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Olmstead,Bryan L.; Shearin,Alan, Imaging system with a lens having increased light collection efficiency and a deblurring equalizer.
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Riess, Michael, Imaging system with scan line titled off focal plane.
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Nadabar, Sateesha; Gopalakrishnan, Venkat K., Method and apparatus for calibrating a mark verifier.
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Nunnink, Laurens; Equitz, William H., Method and apparatus for high resolution decoding of encoded symbols.
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Nunnink, Laurens; Equitz, William H., Method and apparatus for high resolution decoding of encoded symbols.
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Nadabar, Sateesha; Gerst, Carl W, Method and apparatus for industrial identification mark verification.
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Nadabar, Sateesha; Gerst, III, Carl W., Method and apparatus for industrial identification mark verification.
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Daniel Wai-him Wong CA; Milivoje M. Aleksic CA, Method and apparatus for line anti-aliasing.
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Liu Lingnan ; Shimizu Mark Y. ; Vartanian Lisa M., Method and apparatus for reading machine-readable symbols having surface or optical distortions.
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Nadabar, Sateesha; Gopalakrishnan, Venkat K.; Gerst, Carl W., Method and apparatus for verifying two dimensional mark quality.
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Nadabar, Sateesha; Gopalakrishnan, Venkat K.; Gerst, III, Carl W., Method and apparatus for verifying two dimensional mark quality.
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Nadabar, Sateesha; Gopalakrishnan, Venkat; Gerst, Carl W., Method and apparatus for verifying two dimensional mark quality.
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Wagman,Adam; Nadabar,Sateesh G.; Davis,Jason, Method for locating bar codes and symbols in an image.
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Nadabar,Sateesha, Methods and apparatus for reading bar code identifications.
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Nadabar,Sateesha G., Methods and apparatus for reading bar code identifications.
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Olmstead, Bryan L., Methods and systems for optical code reading using virtual scan lines.
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Gerst, III, Carl W.; Testa, Justin, Mobile hand held machine vision method and apparatus using data from multiple images to perform processes.
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Bjorner Johnannes A. S. ; Pardee Bennett ; Alexander Catherine, Moving-light indicia reader system.
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Skinger Gregory Philip (Southbury CT), Omnidirectional barcode locator.
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Colley James E. ; Olmstead Bryan L., Optical reader with adaptive exposure control.
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Olmstead Bryan L. ; Colley James E., Optical reader with adaptive exposure control.
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Olmstead Bryan L. ; Colley James E., Optical reader with addressable pixels.
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Olmstead Bryan L. ; Colley James E., Optical reader with addressable pixels.
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Olmstead Bryan L. ; Colley James E., Optical reader with condensed CMOS circuitry.
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Olmstead Bryan L. ; Colley James E., Optical reader with condensed CMOS circuitry.
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Zlotnick Aviad,ILX, Optimized technique for decoding a bar code from an image of an array of pixels.
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Massieu, Jean-Louis; Puech, Jean-Michel; Elakel, Khalid, Optoelectronic device and process for acquiring symbols, such as bar codes, using a two-dimensional sensor.
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Massieu,Jean Louis; Puech,Jean Michel; El Akel,Khalid, Optoelectronic device and process for acquiring symbols, such as bar codes, using a two-dimensional sensor.
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Massieu,Jean Louis; Puech,Jean Michel; Elakel,Khalid, Optoelectronic device and process for acquiring symbols, such as bar codes, using a two-dimensional sensor.
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Zhou, Weiyang, Prioritized virtual scan line processing.
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Pettersson, Mats Petter, Reconstruction of virtual raster.
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Pettersson, Mats Petter, Reconstruction of virtual raster.
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Olmstead, Bryan L.; Shearin, Alan, Rolling-reset imager.
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Olmstead,Bryan L.; Shearin,Alan, Rolling-reset imager with optical filter.
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Ka Man Au ; Zaioxun Zhu, Skew processing of raster scan images.
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Olmstead, Bryan L., System and method for data reading using raster scanning.
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Braun, Patrick Joseph; Smith, James Anderson, System and method for determining the orientation of a unit dose package.
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Braun, Patrick Joseph; Smith, James Anderson, System and method for determining the orientation of a unit dose package.
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Curry, Douglas N., System and method for directed acuity segmentation resolution compression and decompression.
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Curry,Douglas N., System and method for directed acuity segmentation resolution compression and decompression.
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Shearin, Alan; Gao, WenLiang; Olmstead, Bryan L., System and method for reading optical codes on bottom surface of items.
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Rudeen, Robert W., System and method of optical code reading.
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Rudeen, Robert W.; Olmstead, Bryan L., System and method of optical reading employing virtual scan lines.
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Rudeen, Robert W.; Olmstead, Bryan L., System and method of optical reading employing virtual scan lines.
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Messing,Dean; Kerofsky,Louis J., System for improving an image displayed on a display.
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Braun, Patrick J.; Greyshock, Shawn T., System, method and corresponding apparatus for storing, retrieving and delivering unit dose blisters.
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Braun, Patrick J.; Greyshock, Shawn T., System, method and corresponding apparatus for storing, retrieving and delivering unit dose blisters.
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Greyshock, Shawn T., System, method, apparatus and computer program product for capturing human-readable text displayed on a unit dose package.
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Greyshock, Shawn T., Systems and methods for scanning an identification code of an unknown orientation.
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Cherry, Craig Douglas, Systems and methods for selectively masking a scan volume of a data reader.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Omnidirectional scanning method and apparatus 원문보기