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

Sequenced illumination in mark reading devices

A technology for identification and readers, applied in the field of readers

Active Publication Date: 2016-01-13
SICPA HLDG SA
View PDF17 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The above mentioned problems are solved by the subject-matter of the independent claims of the present invention

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
  • Sequenced illumination in mark reading devices
  • Sequenced illumination in mark reading devices
  • Sequenced illumination in mark reading devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Figure 2A A schematic diagram of an embodiment of a device of the present invention is shown. Apparatus 100 (e.g., a barcode or identification reader) includes a power supply 102 operable to deliver a variable drive current or voltage and a light source 101 operable to employ a sequence of illumination light pulses of different wavelength spectra To illuminate the sign 10, the intensity of the illumination light pulses varies according to the delivered drive current or voltage. Apparatus 100 also includes light sensor 104 operable to measure light intensity received from sign 10 and deliver a corresponding light intensity signal.

[0031] The device 100 also includes a control unit 103 , which in turn includes, for example, a microprocessor (CPU) 131 and a storage unit 132 . The control unit 103 is operable to control the power supply 102 and the light sensor 104 to control the timing of the illumination light pulses according to the switching mode and timing, so as ...

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

A reader operable to read a mark on a substrate, the reader comprising a power source, operable to deliver a variable drive current or voltage, a light source operable to illuminate said mark with a sequence of illumination light pulses of different wavelength spectra, an intensity of said illumination light pulses varying according to the delivered drive current or voltage, a light sensor operable to measure an intensity of light received from said mark and to deliver a corresponding light intensity signal, and a control unit operable to control said power source and light sensor to control timings of said illumination light pulses according to a switching pattern and timings to acquire said light intensity signal for synchronizing acquisition of said light intensity signal with said sequence of illumination light pulses, said control unit being further operable to adjust a duty cycle of said switching pattern so as to maintain heat generation associated to each illumination light pulse below a given threshold value.

Description

technical field [0001] The present invention relates to readers operable to read markings, such as readers and scanners for reading security markings or 1D or 2D barcodes attached to certain substrates. The invention also relates to a method of operating such a device, and to a corresponding computer program and computer program product. Background technique [0002] Today, it is common to apply identifications, such as one-dimensional or two-dimensional barcodes, to objects such as consumer products, food, beverage packaging, cans and bottles, cigarette packs and other tobacco products, documents, certificates, banknotes, and the like. The identification can then be used for the purpose of tracking, identifying or authenticating the item in the field (ie in the marketplace), on the production or packaging line, at the retailer, during transport, and the like. [0003] Once the marking is applied to the item, the encoded information can then be retrieved by a marking (barco...

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
IPC IPC(8): G06K7/10
CPCG06K7/10722G06K7/10732G06K7/1413G06K7/1417G06K19/06103
Inventor A·莫利纳N·杜卡
Owner SICPA HLDG SA