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7536553 |
Method and system for validating a security marking
A method and system for authenticating an item by using a security marking. The security marking is provided on the item with an OVD ink capable of absorbing light in a visible wavelength range to...
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7387249 |
Product verification and authentication system and method
The present invention provides for a system and method for product verification for use with products intended to be introduced into circulation and including machine readable product data, and...
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7380721 |
Low-cost compact bar code sensor
A barcode sensor package has an optical emitter circuit and an optical detector circuit which are formed as one or more integrated optical circuits disposed in a housing which has a reading surface...
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7364074 |
Method of authenticating products using analog and digital identifiers
A method of identifying or authenticating a product by providing an analog identification indicium including a randomized pattern of identification features on a first part of the product wherein...
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7341192 |
Method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station
A method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station...
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7313506 |
Advanced applications for 3-D autoscanning LIDAR system
A laser scanning system can be used in construction projects to generate a field survey. An architect or engineer can use the field survey to create construction drawings. In addition, relevant...
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6892947 |
Barcode embedding methods, barcode communication methods, and barcode systems
Barcode data communication methods, barcode embedding methods, and barcode systems are described. According to one embodiment, a barcode data communication method includes accessing a composite...
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6729541 |
Information reading apparatus and information recording medium
An information reading apparatus can detect the coupling state of the input light to a waveguide of a laminated recording medium in a simple manner, so as to enable to focus the input light on a...
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6651886 |
Optical code readers with holographic optical elements
Holographic optical elements are configured and deployed in optical imagers and scanners to produce optical modification of output laser beams and light received and detected by the system. In some...
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6639698 |
Optical scanning unit with rotatable hologram disc
An optical scanning unit with a rotatable hologram disc, including a light source, a rotatable hologram disc provided with a plurality of holograms, the holograms being formed concentrically along...
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6616043 |
Multi sensor information reader
An information reader formed within a unitary enclosure for sensing whether information on a surface to be read is valid includes a plurality of different sensors for sensing the presence of...
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6616040 |
ANALOG SCAN DATA SIGNAL PROCESSOR EMPLOYING A TIME-DOMAIN SUBSTRATE NOISE FILTER FOR NON-LINEARLY PROCESSING ANALOG SCAN DATA SIGNALS AND REDUCING SUBSTRATE NOISE SIGNAL LEVELS THEREIN PRIOR TO FIRST DERIVATIVE SIGNAL GENERATION AND PROCESSING OPERATIONS CARRIED OUT WITHIN SAID ANALOG SCAN DATA SIGNAL PROCESSOR
An analog scan data signal processor is disclosed, in which a time-domain non-linear substrate noise filter is provided before a first derivative signal generation stage so as to produce, as...
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6547144 |
Holographic laser scanning system for carrying out light collection operations with improved light collection efficiency
A holographic laser scanning system for carrying out laser beam scanning operations with improved light collection efficiency. The holographic laser scanning system comprises: a housing of compact...
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6530522 |
Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes
A holographic laser scanner of ultra-compact design capable of reading bar and other types of graphical indicia within a large scanning volume using holographic optical elements and visible laser...
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6529296 |
Hologram scanner
A hologram scanner is constructed with a driving source for providing a rotational force, a deflection disk installed at the rotation shaft of the driving source for forming a scanning line, the...
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6523750 |
Laser scanning system employing light collection surfaces having optical axes disposed off the bragg angle of the holographic optical elements of the holographic scanning disc thereof
A holographic laser scanning system for scanning bar code symbols. The system comprises a holographic scanning disc having a plurality of holographic optical elements disposed thereon for scanning...
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6464141 |
BAR CODE SYMBOL SCANNING SYSTEM FOR AUTOMATICALLY LASER SCANNING BAR CODE SYMBOLS WITHIN A 3-D SCANNING VOLUME AND PRODUCING INFORMATION SPECIFYING THE POSITION OF EACH BAR CODE SYMBOL DETECTED WITHIN SAID 3-D SCANNING VOLUME
A bar code symbol scanning system for laser scanning bar code symbols within a 3-D scanning volume and automatically producing bar code symbol position information specifying the position of each...
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6439462 |
Conveyor-belt mounted bar code symbol reading system employing a steerable bar code symbol scanner to automatically scan bar code symbols detected by a holographic-based bar code position detector
An automatic bar code symbol reading system for automatically reading bar code symbols on packages transported along a conveyor belt through a 3-D scanning volume. The system includes a...
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6407832 |
Light source following optical system for hologram illumination
A system for illumination of a hologram includes a deflection mirror to direct light from a moving light source to illuminate the hologram, and a heliostat for tracking the moving light source and...
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6360947 |
AUTOMATED HOLOGRAPHIC-BASED TUNNEL-TYPE LASER SCANNING SYSTEM FOR OMNI-DIRECTIONAL SCANNING OF BAR CODE SYMBOLS ON PACKAGE SURFACES FACING ANY DIRECTION OR ORIENTATION WITHIN A THREE-DIMENSIONAL SCANNING VOLUME DISPOSED ABOVE A CONVEYOR BELT
A fully automated package identification and measuring system, in which an omni-directional laser scanning system are used to read bar codes on packages entering the tunnel, while a package...
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6029893 |
Optical scanner having a reflected light collector including holographic optical elements
An optical scanner such as a bar code scanner has a window comprising a holographic optical element through which both the outgoing scanning beam and the returned reflective light passes. The...
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5975419 |
Holographic laser scanner generating a high-resolution 2-D raster scanning pattern using a holographic scanning disc
A holographic laser scanner for producing a high-resolution raster-type 2-D laser scanning pattern within a 3-D scanning volume. The scanner comprises a housing, holographic laser scanning...
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5955720 |
Semi-retroreflective scanners
A semi-retroreflective optical scanning system has an optical scanning element which directs a scanning light beam via a stationary holographic optical element in a scan path across indicia to be...
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5714750 |
Bar code scanning and reading apparatus and diffractive light collection device suitable for use therein.
A miniature scan engine for scanning a beam of monochromatic (laser) light across a bar code and receiving return light at a detector that provides electrical signals representing the code,...
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5550366 |
Optical scanner with automatic activation
The optical scanner has an optical scanning head with LED light sources, focusing and receiving optics and a CCD detector array all mounted on a printed circuit board. This assembly, along with a...
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5550364 |
Method and apparatus for spotter beam formation using a partitioned optical element
An optical element for causing a visible spotter beam emitted by a hand-held scanning bar code reader provides visible indications of the area of a surface which is being scanned by an invisible...
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5498862 |
Side scanning bar code reader with vertical and horizontal scan patterns
An optical bar code scanner has a laser for generating a coherent light beam, and a multifaceted rotatable mirror for scanning the beam. The scanned beam is reflected from at least three fixed...
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5350908 |
Automatic gain control circuit having disturbance cancellation capabilities
A system for filtering electrical signals and cancelling large amplitude disturbance events contaminating such signals which might otherwise interfere with these signals being further processed....
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5291007 |
Bar code scanner using a hologram disk and having detachable and adjustable optical elements
An information reader, including a light source for emitting a light beam. A photo-detector detects the light beam after it is reflected from a bar code. A rotatable circular hologram disk scans...
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5237160 |
Bar code scanner having hologram
A bar code scanner includes a semiconductor laser device for emitting a light beam, a hologram disc on which a grating is formed, the hologram disc rotating around a predetermined axis, an incident...
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5153417 |
Bar code reader using holograms
A bar code reader includes a hologram receiving a scanning light beam in sequence from a scanning light beam source for directing the scanning light beam to a bar code to be read along one path so...
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5028771 |
Bar code reader
A bar code reader includes a hologram disk having an arcuate circular shaped hologram disk disposed on a disk where the laser beam from a laser beam generator is applied. A laser controller is used...
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4999482 |
Optical scanning system for a bar code reader
An optical scanning system of a bar code reader utilizing a hologram scanner in which a laser beam from a laser beam generator is divided into three parallel paths by three beam splitters. The...
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4794237 |
Multidirectional holographic scanner
A holographic scanning system for scanning a bar coded label is disclosed in which the light beams of a laser are directed at a set of holograms located on a rotating disk in which each hologram...
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4758058 |
Holographic disk scanner having special position-indicating holograms
A holographic scanner includes a rotating glass disk carrying a plurality of scan line generating holograms, a laser light source and means for detecting reflected optical energy. The scanner is...
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4639070 |
Beam scanning type information readout device
A beam scanning-type information readout device, and more particularly, a hand-carried beam scanning-type information readout device which can read information consisting of a bar-code-symbol...
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4333006 |
Multifocal holographic scanning system
A holographic scanning system for scanning bar code indicia is disclosed in which the light beam of a laser is directed to a first set of holograms located on a single rotating disc in which each...
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4224509 |
Holographic scanning system
A holographic scanning system for scanning a bar code indicia is disclosed in which the light beam of a laser is split into two segments, each directed through a plurality of holograms mounted on a...
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