|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||250/559.36 ; 250/559.12 ; 356/429|
|§371/§102 date||19970822 (19970822)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 16|
The position of an edge of a web or sheet is measured using a photoelectric measuring device. Any edge anomalies will generate extreme edge position values. These extreme values are used together with other, more representative values, to determine an initial position of the web edge. These extreme values are then eliminated since they exceed a tolerance threshold. A revised determination of the edge location is made using the remaining position values.
[ What is claimed is:] [1.] A method for measuring a position of an edge of a web by means of a photoelectric measuring device consisting of an illumination device and a photoelectric receiver, characterized in that at least three measured values of a position of an edge are determined, that an initial average value is determined using said at least three measured values of a position of an edge, that extreme values of the measured values of a position of an edge exceeding said initial average value and based on anomalies of the edge are removed from fur...