KR940007739A

KR940007739A - Raster scanning system and scanning method for reading barcodes

Info

Publication number: KR940007739A
Application number: KR1019920017965A
Authority: KR
Inventors: 도보키스 폴; 피 고렌 데이비드; 에스 스피츠 구렌; 알 마구린 구니엘
Original assignee: 시모야마 도시로오; 오림파스 고오가꾸 고오교오 가부시기가이샤
Priority date: 1992-09-30
Filing date: 1992-09-30
Publication date: 1994-04-28
Also published as: KR960003056B1

Abstract

바코드 부호등을 판독하는 시스템이 개시되며, 상기 시스템은 라스터광선을 목표로 향하여 발생시켜 좁은 제1라스터주사 패턴을 만들고, 상기 제1라스터 주사패턴에 의하여 사용자가 손으로 자신이 희망하는 위치로 상기 광선의 목표를 정하여 상기 위치로 상기 광선을 향하게 하는 것을 가능하게 하는 상기 라스터광선과, 판독해야할 부호전체를 소인하는 비교적 폭이 넓은 제2라스터주사패턴을 발생하는 스캐너와, 상기 부호로부터의 반사광을 받으며 상기 부호에 의하여 표시되는 데이터에 대응 하는 전기 신호를 발생하는 검출기를 가진다.A system for reading barcode codes and the like is disclosed, wherein the system generates a raster beam toward a target to produce a narrow first raster scanning pattern, and the user desires his or her own hand by the first raster scanning pattern. A scanner for generating said raster beam which makes it possible to direct said beam to said position by aiming said beam of light at a position, and a relatively wide second raster scanning pattern sweeping the entire code to be read; And a detector that receives the reflected light from the sign and generates an electrical signal corresponding to the data represented by the sign.

Description

Raster scanning system and scanning method for reading barcode

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 레이저주사시스템의 실시예를 단순화 하여 모식적으로 나타낸도면,1 is a schematic view showing a simplified embodiment of a laser scanning system according to the present invention;

제3도는 본 발명에 의한 2차원의 바코드를 판독하는 동안의 상이한 시간간격내의 라스터주사패턴을 나타낸 도면.3 shows raster scanning patterns in different time intervals during reading a two-dimensional bar code according to the present invention.

제4도는 본 발명에 의한 2차원의 바코드를 판독하는 동안의 상이한 시간간격내의 라스터주사패턴을 나타낸 도면.4 is a diagram showing a raster scan pattern within different time intervals during reading a two-dimensional bar code according to the present invention.

Claims

In a system for reading a bar code code, the system generates a narrow first raster scanning pattern generated by aiming the last light beam, and the light beam is moved to a position desired by the user by the raster scanning pattern. Scanning means for generating the raster beam which makes it possible to aim at and direct the beam to said position, and a relatively wide second raster scan pattern which sweeps the entire code to be read and the reflected light from said code Receiving means for generating an electrical signal corresponding to the data indicated by the sound code.

An apparatus for reading barcode codes and the like, the apparatus comprising: a) a light source for generating light rays in the shape of a raster scan pattern whose height can be adjusted toward a code to be read; b) a photodetector that receives reflected light from the sign and generates an electrical signal in response to the reflected light; And c) a control circuit for changing the height of the scan pattern in response to the electrical signal from the detector.

A device for reading a bar code, the device comprising: a) a light beam scanner for generating a light beam toward a code to be read, and for moving the light beam along the code by means of a raster scanning pattern; b) a photodetector that receives reflected light from the sign and generates an electrical signal in response to the reflected light; And c) a control circuit for controlling the height and width of the scan pattern in response to the electrical signal.

A method of scanning a bar code code, the method comprising: a) generating a raster scan pattern of a comparatively bright and narrow rectangular laser beam, setting a target of the beam with respect to a bar code code to be read by the user and recognizing the beam; Making it possible to direct to the sign; b) scanning the code; c) harvesting the reflected light from said sign and generating an electrical signal in response to said reflected light; And d) changing a height of the raster scan pattern in response to the electrical signal.

A straight bar code symbol or data or information is represented by a bar or element mark of various widths arranged in a plurality of rows, with one row located below the other row and each row representing a plurality of code words of information. Wherein a scanner electro-optically reads a coded mark having a two-dimensional code representing at least one piece of information having a character, the scanner comprising: a) reflecting from the mark with the mark directed towards the light beam; Means for making; b) means for detecting at least a portion of light reflected from the mark; c) means for determining from the reflected light whether the mark is part of a straight bar code code or part of a two-dimensional code; And d) means for decoding the mark.

In a system for reading a bar code code, the system generates raster beams toward a target to form a narrow-lined dual line scan pattern, and the user can manually move the raster beam to a desired position by the dual line scan pattern. The raster beam, which makes it possible to target the beam and direct the beam to the position, and a relatively wide spaced dual that is incrementally increased to sweep the vertical dimension of the entire code to be read And scanning means for generating a scanning pattern of a line and detection means for receiving reflected light from the code and generating an electrical signal corresponding to the data represented by the code.

※ Note: The disclosure is based on the initial application.