초록 ▼

A method and system for guiding a web of moving material is disclosed. The system includes a plurality of variable light sources that can project light onto the surface of the web. One light source or a combination of light sources can be selected to project light onto the web, and the wavelength of

A method and system for guiding a web of moving material is disclosed. The system includes a plurality of variable light sources that can project light onto the surface of the web. One light source or a combination of light sources can be selected to project light onto the web, and the wavelength of the light can be selected. A light detector receives light reflected from the surface of the web and generates a data signal in response to the light received. A controller can be used to analyze the reflected light to determine the position of the web of moving material. The system enables the lateral and/or longitudinal position of various types of webs to be efficiently and effectively determined based upon the position of a line, edge, or other mark disposed on the surface of the web.

대표청구항 ▼

A method and system for guiding a web of moving material is disclosed. The system includes a plurality of variable light sources that can project light onto the surface of the web. One light source or a combination of light sources can be selected to project light onto the web, and the wavelength of

A method and system for guiding a web of moving material is disclosed. The system includes a plurality of variable light sources that can project light onto the surface of the web. One light source or a combination of light sources can be selected to project light onto the web, and the wavelength of the light can be selected. A light detector receives light reflected from the surface of the web and generates a data signal in response to the light received. A controller can be used to analyze the reflected light to determine the position of the web of moving material. The system enables the lateral and/or longitudinal position of various types of webs to be efficiently and effectively determined based upon the position of a line, edge, or other mark disposed on the surface of the web. ing the moveable back wall section to an unretracted position. 13. The method of claim 11, wherein the step of extracting the carriage from the coop comprises: (a) urging the poultry to move through the internal cavity of the coop. and fixed at a second location relative to the first photosensitive detector, wherein the exposure control circuit is capable of exposing the third photosensitive detector for a third time period, wherein the third time period is longer than the second time period, and wherein when first, second, and third photosensitive detectors are moved in a predefined manner relative to the object, at midpoint of the third time period, light from the point is incident at proximate center of the third photosensitive detector. 7. A program storage medium readable by a processing circuit, embodying a software program of instructions executable by the processing circuit to perform exposure alignment, the program comprising: logic, for a first time period, for exposing at least one first photosensitive detector sensitive to light in a first frequency band; and logic, for a second time period, for exposing at least one second photosensitive detector sensitive to light in a second frequency band, wherein the second photosensitive detector is fixed at a first location relative to the first photosensitive detector, wherein the second time period is longer than the first time period, and wherein midpoint of the first time period occurs at time proximate to midpoint of the second time period. 8. The program storage medium as recited in claim 7, wherein the exposure alignment occurs in a machine selected from the group consisting of an optical scanner, a facsimile machine and a digital camera. 9. The program storage medium as recited in claim 7, the program further comprising: logic, for a third time period, for exposing at least one third photosensitive detector sensitive to light in a third frequency band and fixed at a second location relative to the first photosensitive detector, wherein the third time period is longer than the second time period and wherein midpoint of the first time period occurs at time proximate to time of midpoint of the third time period. 10. A program storage medium readable by a processing circuit, embodying a software program of instructions executable by the processing circuit to perform exposure alignment, the program comprising: logic, for a first time period, for exposing at least one first photosensitive detector sensitive to light in a first frequency band; logic, for a second time period, for exposing at least one second photosensitive detector sensitive to light in a second frequency band, wherein the second photosensitive detector is fixed at a first location relative to the first photosensitive detector, wherein the second time period is longer than the first time period, and wherein when first and second photosensitive detectors are moved in a predefined manner relative to an object, at midpoint of the first time period, light from a point on the object is incident at proximate center of the first photosensitive detector and at midpoint of the second time period, light from the point is incident at proximate center of the second photosensitive detector. 11. The program storage medium as recited in claim 10, wherein the exposure alignment occurs in a machine selected from the group consisting of an optical scanner, a facsimile machine and a digital camera. 12. The program storage medium as recited in claim 10, the program further comprising: logic, for a third time period, for exposing at least one third photosensitive detector sensitive to light in a third frequency band, wherein the third photosensitive detector is fixed at a second location relative to the first photosensitive detector, wherein the third time period is longer than the second time period, and wherein when first, second, and third photosensitive detectors are moved in a predefined manner relative to the object, at midpoint of the third time period, light from the point is incident at proximate center of the third photosensitive detector.