This invention relates to a method for reading, while using optical interference, a barcode that extends into the depth of a substrate. The barcode is represented by an area with marks in the substrate that is partially transparent to electromagnetic radiation. The inventive method comprises the steps of irradiating the substrate with short coherence length light from a broad-band light source, dividing the light up into reference light and measuring light, returning the reference light and the ...

The present invention is a label system and method for label alignment and placement on a container. The label system includes a first label or a container whereby the first label includes alignment symbology and a second label having an alignment area corresponding to the alignment symbology of the first label. The second label is positioned on the container whereby the alignment area of the second label is aligned with the alignment symbology of the first label. Visibility enhancement indicia ...

A compact display assembly includes a flexible display screen such as a passive LCD screen or an OLED display screen. Printed circuit boards including driving circuitry for the display screen are mounted at its rear in a configuration defining a longitudinal region of the screen about which it may be folded or curved over on itself to a compact configuration. The assembly may be included in electronic computational devices such as laptop computers, electronic books and the like.

When bar code data of a left or right block flanked by a guard bar and a center bar is input, several characters including the first character are demodulated, and a decision is made as to whether demodulation should be continued or not. If demodulation has already been performed a specified number of times, or demodulation free from significant distortion has already been performed, on the block currently subjected to demodulation, the demodulation process is discontinued and demodulation is no...

An optical reading apparatus for moving a mirror in a back and forth motion such that the mirror scans the light reflected from an optical pattern and sequentially projects narrow segments of the reflected image onto a linear image sensor. Moving the mirror includes means for mounting the mirror within a movable case which is mounted on a shaft to selectively cause the case to go back and forth in a seesaw-like fashion. As the case goes back and forth, it causes the mirror to sweep or scan acros...

In a preferred embodiment, an identification code having therein both general information which is encrypted using standards symbologies and security information which is encrypted using a unique symbology. In the case of bar codes, the bar code may include two separate sets of bars. One set of bars may include basic information, for example an employee's identification number, encrypted using standard symbologies which may be read in any standard reader. The other set of bars includes security ...

This invention relates to a voting system. In particular, this invention relates to a ballot paper which includes an option section and response section, whereby the response section is adapted to be separable from the option section. The option section preferably contains at least two options, the options being generated and/or presented in random order, and the response section preferably includes at least one selection portion for each option presented on the option section. The response sect...

An optical scanning system is provided for producing a signal representative of a spatial distribution of indicia having different degrees of reflectivity to light, such as a bar code (14). The system includes an optical scanner (12) for scanning beam of light over the spatial distribution of indicia (14) and for producing an electrical signal corresponding to changes in the degree of reflectivity of the indicia. A digitizer (20), responsive to detections in a predetermined characteristic of the...

The present invention provides a system for correcting improperly printed or otherwise defective bar codes. The system scans a bar code and determines whether the scanned bar code data is correct. If the scanned bar code data is incorrect, the system uses the incorrect scanned bar code data to create a scan-based printhead model. The correct data is entered manually, and the manually entered data is used to construct an active printhead model. The scan-based and active printhead models are then ...

An integrated scanner for scanning a barcode is formed on a common substrate. The scanner may include a micro-machined mirror, a laser diode, and a detector, mounted on a single substrate or several connected substrates. Lenses can be used to focus a laser beam from the laser diode as well as expand a laser beam deflected by the micro-machined mirror. The scanner may also scan a barcode without using a micro-machined mirror by rotating the laser diode.