Abstract:
An information recording medium (10) according to one embodiment includes a substrate (25), a first image (14A), and a second image (14B). The first image (14A) is provided on the substrate (25), emits light when irradiated with first excitation light (L1) having a first wavelength, and includes phase-modulated first information (14Aa, 14Ab). The second image (14B) is provided on the substrate (25), emits light when irradiated with second excitation light (L2) having a second wavelength different from the first wavelength, and includes phase-modulated second information (14Ba, 14Bb).
Abstract:
An optical code scanner (130) is presented that includes multiple scanning windows (220, 235, 365) for reading an optical code where each scanning window (220, 235, 365) can be optimized for reading optical codes presented in either printed or electronic form. The optical code scanner (130) supports multiple scanning modes where each scanning mode is based on a different method of reading optical codes and each method offers different advantages. Each of the multiple scanning windows (220, 235, 365) is assigned to use one of the scanning modes. The scanning mode for a window (220, 235, 365) can also be reassigned at any time to a different mode.
Abstract:
A system (1) reads an information code (C) formed on a medium (10). The code has light modules and dark modules. The areas of the light modules are produced as inversion areas inverted light reflection characteristics. The areas of the dark module areas are produced as non-inversion areas non-inverting light reflection characteristics. A reader (40) emits illumination light of wavelengths including infrared light wavelengths to the code (10), and images the code (10) under the illumining light emission. The inversion areas, that is, the light module areas, can be dark under the visible light, but can be a light color due to its inverted light reflection characteristics. The light modules can thus be imaged by the reader (40) under the illumining light emission, providing distinguishable detection of the inversion and non-inversion areas, allowing the light and dark modules to be extracted for decoding.
Abstract:
A barcode imaging apparatus comprises a source of electromagnetic radiation and an image acquisition device. The acquisition device is configured to be sensitive to a wavelength of electromagnetic radiation emitted by the source of electromagnetic radiation. In use, a bar code to be read is illuminated by the source of electromagnetic radiation and an image of the barcode is captured by the image acquisition device at the wavelength of that radiation. The source of electromagnetic radiation comprises a Light Emitting Diode (LED), a Current Source; a Driver for said current source; a Clock Pulse Generator; and a Monostable. The LED is powered by the Current source which is in turn driven by the Driver which is controlled by the Clock Pulse Generator through the Monostable.
Abstract:
Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of an over-power condition not conforming to preestablished standards to meet prevalent safety standards.
Abstract:
Laser power control arrangements interrupt power to a laser used in electro-optical readers upon detection of operating conditions not conforming to preestablished standards, and adjust power to the laser to enhance reader performance without violating prevalent safety standards.