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:
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:
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:
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 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:
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:
A sub-pixel assembly of one embodiment of the invention is disclosed that includes a number of active display units. Each active display unit is capable of controlling light, and has a turn-on threshold responsive to a signal. The active display units are organized by their turn-on thresholds to achieve dithering of the light, in response to the signal.
摘要:
A writeboard according to an embodiment of the invention includes plural display cells capable of controlling light within a visible-light spectrum, the display cells being arranged over a display surface of the writeboard. The writeboard also typically includes plural memory cells coupled with the display cells, and plural first receivers arranged with the display cells and the memory cells over the display surface. The first receivers typically are configured to receive transmitted writing information and to communicate the transmitted writing information to corresponding memory cells for storage. Corresponding display cells thus may be selectively activated in accordance with the transmitted writing information.
摘要:
An electronic device includes a first member, and a second member which includes segments. At least one of the first member and the second member is movable relative to the other of the first member and the second member among a plurality of distinct positions as a result of differing voltage states of the segments.
摘要:
A micro-electromechanical system (MEMS) includes a flexure, a voltage generator, and a temperature sensor thermally coupled to the MEMS, wherein the voltage generator is configured to produce a temperature compensated voltage in response to a thermal measurement performed by the temperature sensor.