Unlock instant, AI-driven research and patent intelligence for your innovation.

Optically active articles and systems in which they may be used

An optically active, product technology, applied to record carriers, instruments, computing, etc. used by machines, which can solve problems such as human-readable information, difficulty in processing variable radiation, and reduced accuracy of ALPR systems

Pending Publication Date: 2017-05-10
3M INNOVATIVE PROPERTIES CO
View PDF20 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing systems have difficulty distinguishing human-readable information from complex backgrounds and dealing with variable radiation
Also, the accuracy of the ALPR system drops when license plates become blurred or dirty

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optically active articles and systems in which they may be used

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Various embodiments and specific implementations will be described in detail. These embodiments should not be construed as limiting the scope of the present disclosure in any way, and changes and modifications can be made without departing from the spirit and scope of the present invention. In addition, only some end uses are discussed herein, but end uses not specifically described herein are included in the scope of the present disclosure. Therefore, the scope of the present disclosure should be determined only in accordance with the claims.

[0023] As used herein, the term "infrared" refers to electromagnetic radiation with a wavelength greater than that of visible radiation, extending from the nominal red edge of the visible spectrum around 700 nanometers (nm) to more than 1000 nm. It has been recognized that the infrared spectrum extends beyond this value. As used herein, the term "near infrared" refers to electromagnetic radiation with a wavelength between 700 nm ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The inventors of the present application developed novel optically active materials, methods, and systems for reading identifying information on an optically active article. Specifically, the present application relates to substantially simultaneously capturing and / or processing a first optically active image and a second optically active image. In some embodiments, the first optically active image is taken at a first wavelength and the second optically active image is taken at a second wavelength, wherein the first wavelength is different from the second wavelength. In one aspect, the present applications relates to reading information on a license plate for purposes of vehicle identification.

Description

Technical field [0001] This application relates generally to optically active products, methods of making and using these products, and systems to which the products are applicable. Background technique [0002] Automatic vehicle recognition (AVR) is a term applied to the detection and recognition of vehicles through electronic systems. Exemplary uses of AVRs include, for example, automatic toll collection (e.g., electronic toll collection systems), traffic enforcement (e.g., red light running systems, speeding enforcement systems), searching for vehicles associated with crime, access control systems, and facility access control. Ideal AVR systems are universal (ie, they can identify vehicles with 100% accuracy). The two main types of AVR systems currently in use are (1) systems that use RFID technology to read RFID tags attached to vehicles and (2) systems that use machines or devices to read machine-readable codes attached to vehicles. [0003] One advantage of the RFID system ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06V10/143
CPCG06V10/143G06K19/06G06V20/63G06V20/625G06V2201/09
Inventor 本杰明·W·沃森戴维·J·麦康奈尔
Owner 3M INNOVATIVE PROPERTIES CO