摘要:
A method and apparatus for controlling a gap between conductors in an electro-mechanical device by controlled displacement of a displaceable conductor within the electromechanical device is provided. The apparatus includes a current controller configured to generate a controlled current output for the electro-mechanical device in response to a control signal, the current controller selectively routing a voltage to an array element including control circuitry and the electro-mechanical device.
摘要:
This invention relates to a label having improved security, comprising: a label substrate having a recessed portion; a layer of an energy activated material substantially located along a section of the recessed portion; and an optically transparent cover located substantially over the energy activated material such that the cover is substantially located within the recess.
摘要:
A feedback-control circuit for color calibration of a diffraction light device includes at least one diffractive light device (DLD) having a gap distance defined by opposing plates, at least one sensor configured to convert light modulated by the DLD device into a light signal indicative of the gap, a controller configured to calculate a voltage correction value based on a difference between the gap as indicated by the light signal and a designer-specified gap value and being further configured to apply a corrected voltage corresponding to the voltage correction value to the DLD device.
摘要:
A method for calibrating an interferometer uses an actuator adapted to control an optical gap in response to application of an electrical signal. The interferometer is illuminated with a beam of light having a predetermined substantially monochromatic wavelength, oriented at a first predetermined angle of incidence, and light reflected from the interferometer at a second predetermined angle is detected while varying an electrical signal applied to the actuator, thereby establishing a calibrated relationship between the applied electrical signal and an optical path length of the interferometer.
摘要:
This invention relates to a receipt generating apparatus, comprising: an article that has been purchased; and a receipt portion located substantially on the article such that the receipt portion includes an energy activated material section upon which selected receipt markings are placed.
摘要:
One aspect of the present invention provides a system for controlling display cells modulating light based on image data. The system comprises an input controller and a display controller. The input controller is configured to receive a series of image data groups with each image data group having N bits arranged in subgroups, wherein each subgroup has a subgroup value and a subgroup position corresponding to one cell of a group of cells. The input controller is configured to determine a comparison value for each subgroup position based on subgroup values at corresponding subgroup positions of a current image data group and a preceding image data group. The input controller is further configured to provide an update signal based on the comparison values, and to provide an update image data group having less than N bits and representative of the current image data group when the update signal indicates reduced data transmission. The display controller is configured to receive the update signal and the update image data group, and to update the group of cells based on the update signal with N bits of data from at least one of: the update data group, the preceding data group, and a function of the update and preceding data groups.
摘要:
This invention relates to a self aligning optical printing system, comprising: an electromagnetic energy beam source capable of emitting a plurality of electromagnetic energy beams of differing wavelengths; a plurality of lenses located substantially adjacent to each other such that each of the plurality of electromagnetic energy beams interacts with one of the plurality of lenses to self align the plurality of electromagnetic energy beams with respect to each other; and a multi-wavelength media located adjacent to the plurality of lenses such that the plurality of self aligned electromagnetic energy beams interacts with the media.
摘要:
The present invention relates to a microcapsule that can be used to form a rewritable medium for visual displays that are stable in the presence of electric fields having a strength that is typical in the work environment. The microcapsule of the invention comprises charged particles of one or more colors that are suspended in a phase change material that has a melting temperature in the range of between about 30° C and about 200° C. The microcapsules can be used to form an electrophoretic coating that includes microcapsules of the invention distributed throughout a polymer matrix. The electrophoretic coating can be used to coat a substrate to form a rewritable medium.
摘要:
A method of facilitating focusing of a multi-function digital media drive, is such as to generate two or more error signals each indicative of a focus of an energy beam by an optical arrangement onto first and second different recording layers of a digital medium in the drive, the first recording layers being covered with a protective, energy beam transparent substrate. A selected on of the error signal is used to determine a focus correction.