Abstract: A microwave barcode system is provided wherein the barcode comprises a plurality of conductive wires, mounted on a surface, or embedded beneath the surface of the object. A transmitter, comprising a dipole antenna, radiates microwave signals in the direction of the surface, and a microwave reader, comprising a dipole antenna positioned to receive the microwave signals passing through the surface, senses an attenuation of the microwave signal caused by a resonant interaction between the microwave signals and the conductive wires. The conductive wires of the present invention can be mounted in a stand-up fashion, wherein each wire is mounted adjacent to and parallel to, but not touching, its at least one neighbor, or in a lay-down fashion, wherein each wire is mounted coincident with an imaginary line which is also coincident with the remaining wires, and wherein the wires are mounted end-to-end with a gap surrounding each wire end.

Abstract: An integrated diode detector for an imaging system is facilitated by fabricating a Schottky diode between the quarter wavelength arms of a photolithographically manufactured one-half wavelength resonator.

Abstract: A printable microwave image for data encoding is provided. The microwave image comprises a two-dimensional pattern of a plurality of pixels on a surface, wherein each pixel exists in one of two states with respect to radiation in a microwave frequency range. An opaque state prevents transmission of microwave radiation, and a transparent state permits transmission of microwave radiation. The applicable microwave frequency range is from a low frequency of 1 gigahertz to a high frequency of 200 gigahertz. The opaque pixels can be comprised of reflective printer ink that reflects the microwave radiation, absorbent printer ink that absorbs the microwave radiation, reflective laser printer toner that reflects the microwave radiation, absorbent laser printer toner that absorbs the microwave radiation, or a metal foil.

Abstract: A printable microwave image for data encoding is provided. The microwave image comprises a two-dimensional pattern of a plurality of pixels on a surface, wherein each pixel exists in one of two states with respect to radiation in a microwave frequency range. An opaque state prevents transmission of microwave radiation, and a transparent state permits transmission of microwave radiation. The applicable microwave frequency range is from a low frequency of 1 gigahertz to a high frequency of 200 gigahertz. The opaque pixels can be comprised of reflective printer ink that reflects the microwave radiation, absorbent printer ink that absorbs the microwave radiation, reflective laser printer toner that reflects the microwave radiation, absorbent laser printer toner that absorbs the microwave radiation, or a metal foil.

Abstract: A microwave barcode system is provided wherein the barcode comprises a plurality of conductive wires, mounted on a surface, or embedded beneath the surface of the object. A transmitter, comprising a dipole antenna, radiates microwave signals in the direction of the surface, and a microwave reader, comprising a dipole antenna positioned to receive the microwave signals passing through the surface, senses an attenuation of the microwave signal caused by a resonant interaction between the microwave signals and the conductive wires. The conductive wires of the present invention can be mounted in a stand-up fashion, wherein each wire is mounted adjacent to and parallel to, but not touching, its at least one neighbor, or in a lay-down fashion, wherein each wire is mounted coincident with an imaginary line which is also coincident with the remaining wires, and wherein the wires are mounted end-to-end with a gap surrounding each wire end.

Abstract: This invention provides a method and apparatus for performing Haar transforms that process one image pixel for each clock cycle. The Haar transform is performed by cascading successive Haar transform cells where each Haar transform cell processes a 2×2 block of inputs and outputs a 2×2 block of Haar transform coefficients. Four inputs are processed by a first stage of two adders and two subtractors to generate four Haar transform coefficients. The output of the Haar transform may be quantized, run length encoded and then compressed to achieve a high compression ratio of greater than 20 to 1 for near lossless image compression.

Abstract: The clock multiplier which is useful for multiplying the frequency of a clock signal by an integer factor, like 4 or 6. In a typical application this multiplier is used for achieving high addressability printing on a laser printer. In order to print at a quarter pixel resolution, the frequency of the clock signal must be multiplied by four. It is important that at the beginning of the pulse train, as occurs on the leading edge of each scanline, the new clock locks in at once with the input clock from the printer. The clock multiplier, as described below, has capabilities for multiplying the input clock by a factor of 4. Other factors, like 2, 6 or 8 can easily be achieved by expanding on the description. The circuit features automatic and instant locking to the input pulse train, as well as automatic tuning to the present clock frequency.