[특허]Bar code locator for video scanner/reader system

[미국특허] Bar code locator for video scanner/reader system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G07B-015/02
출원번호	US-0302012 (1989-01-30)
발명자 / 주소	Kirkpatrick Robert D. (Farmers Branch TX)
출원인 / 주소	Image Recognition Equipment Corporation (Richardson TX 02)
인용정보	피인용 횟수 : 65 인용 특허 : 5

초록 ▼

A target locator having a group of uniquely configured, high contrast elements is displayed adjacent one or more target bar codes for increasing the probability of acquiring a target bar code of interest and extending the range at which a target bar code of interest can be acquired and read. The high contrast locator elements are arranged in a pattern which is unlikely to occur in nature, and the width and spacing of the target locator elements are substantially greater than the comparable bar width and spacing of elements within the target bar code of interest. A comparison of grey scale pixel values is used to validate whether a candidate bar code locator actually corresponds with reference target locator data stored in memory. When the card is displayed adjacent a second bar code of interest, the two bar codes of interest can be scanned within the same field of view.

대표청구항 ▼

In a reader/scanner system for automatically reading bar code data elements displayed on a carrier, the improvement comprising: a uniquely configured target locator including a group of locator elements having predetermined and known characteristics disposed on said carrier in association with said bar code data elements, said target group including a set of serially spaced rectangles superimposed on a high contrast background, said rectangles when intersected by a line through the center of said target group defining a sequence of contrasting bars and spaces, said bars and spaces having predetermined widths along said centerline; and, means responsive to the respective width ratios of said locator elements and spaces for initially detecting the presence of said target locator group and thereafter reading the bar code data elements adjacent to said target locator group.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

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IPC	Description
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] Bar code locator for video scanner/reader system 원문보기