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| Number | Title | Issue Date |
| 7812366 | Ultraviolet light emitting AlGaN composition, and ultraviolet light emitting device containing same An AlGaN composition is provided comprising a group III-Nitride active region layer, for use in an active region of a UV light emitting device, wherein light-generation occurs through radiative recombination of carriers in nanometer scale size, compositionally inhom... | 10/12/2010 |
| 7602997 | Method of super-resolving images This invention presents a super-resolution image reconstruction from a sequence of aliased imagery. The sub-pixel shifts (displacement) among the images are unknown due to uncontrolled natural jitter of the imager. A correlation method is utilized to estimate sub-pi... | 10/13/2009 |
| 7348201 | Creation of anisotropic strain in semiconductor quantum well Methods and devices for creating an anisotropic strain in a semiconductor quantum well structure to induce anisotropy thereof are disclosed herein. Initially, a substrate is provided, and a quantum well structure formed upon the substrate. A first crystalline layer ... | 03/25/2008 |
| 7153475 | Aerosol particle analyzer for measuring the amount of analyte in airborne particles Aerosol particle analyzer (APA) for measuring the amount of analyte in airborne particle is described. The APA uses an analysis liquid. In most embodiments, this analysis liquid is chosen so that when it is mixed with the particles, an optical property of the analys... | 12/26/2006 |
| 7135243 | Organic electroluminescent devices An organic EL device, comprising an anode and a cathode, and at least one organic luminescent layer comprising a compound of the formula: positioned between said anode and said cathode, and wherein: ... | 11/14/2006 |
| 7126687 | Method and instrumentation for determining absorption and morphology of individual airborne particles Characterizing individual airborne particles in real time according to their absorption of optical energy at one or more wavelengths. The instrument can measure the two-dimensional angular optical scattering (TAOS) and/or the one-dimensional angular optical scatteri... | 10/24/2006 |
| 7125518 | Aerosol particle analyzer for measuring the amount of analyte in airborne particles Aerosol particle analyzer (APA) for measuring the amount of analyte in airborne particle is described. The APA uses an analysis liquid. When this analysis liquid is mixed with the particles, an optical property of the analysis liquid (CDAL) varies according to the a... | 10/24/2006 |
| 7010167 | Method of geometric linear discriminant analysis pattern recognition Feature attributes are extracted from an observation space to create feature vectors for each class to be identified. A linear transformation matrix is used to reduce the dimension of the feature vectors. A numerical optimization algorithm maximizes a geometric crit... | 03/07/2006 |
| 6947978 | Method for geolocating logical network addresses Method for geolocating logical network addresses on electronically switched dynamic communications networks, such as the Internet, using the time latency of communications to and from the logical network address to determine its location. Minimum round-trip communic... | 09/20/2005 |
| 6941013 | Method of image binarization using histogram modeling Method of image binarization using histogram modeling, which combines spatial resolution expansion with binarization in a single integrated process using a combination of spatial expansion, histogram modeling, classification, and quantization. Each pixel of the inpu... | 09/06/2005 |
| 6831990 | System and method for image tamper detection via thumbnail hiding A semi-fragile image tamper detection system and method based on thumbnail hiding and which signifies the image areas in which tampering has occurred, is provided. A thumbnail is defined as a low-resolution version of an entire image or the significant features of a... | 12/14/2004 |
| 6820830 | Shredder residue dispersion system A security paper shredder where the residue of individual shredded document pages are collected in multiple collection bins for disposal, ensuring that no single collection bin contains the residue of any entire page. To further ensure that no adversary could obtain... | 11/23/2004 |
| 6760350 | Method for measuring gain of photonic inverters Method to measure gain of a photonic inverter based on a semiconductor laser using two different modes of operation. In one mode, the device is operated as a photonic inverter device and in the other mode as a photogenerated current measurement device. While the dev... | 07/06/2004 |
| 6701049 | Optical clock recovery device using non-linear optical waveguides All-optical timing extraction and optical clock recovery for high-speed return-to-zero binary optical data streams using the timing difference between clock and data counter-propagating optical pulses in a non-linear optical waveguide where the first puls... | 03/02/2004 |
| 6647159 | Tension-tuned acousto-optic bandpass filter Device whereby one or more bands of optical wavelengths may be selected for further transmission. All light within the optical bandwidth of operation is first coupled from the core mode of an optical fiber to a specific cladding mode by a chirped broadban... | 11/11/2003 |
| 6618702 | Method of and device for phone-based speaker recognition A language-independent speaker-recognition system based on parallel cumulative differences in dynamic realization of phonetic features ( i.e. , pronunciation) between speakers rather than spectral differences in voice quality. The system exploits phonetic... | 09/09/2003 |
| 6580841 | Chirped fiber acousto-optic bandpass filter A device whereby one or more bands of optical wavelengths may be selected for further transmission. All light within the optical bandwidth of operation is first coupled from the core mode of an optical fiber to a specific cladding mode by a chirped broadb... | 06/17/2003 |
| 6556729 | Acousto-optic bandpass filter The acousto-optic bandpass filter is a device whereby one or more bands of optical wavelengths may be selected for further transmission. In this device, all light within the optical bandwidth of operation is first coupled from the core mode of a optical f... | 04/29/2003 |
| 6515666 | Method for constructing graph abstractions A method of constructing graph abstractions using a computer is described. The abstraction is presented on a computer display and used by a human viewer to understand a more complicated set of raw graphs. The method provides rapid generation of an abstrac... | 02/04/2003 |
| 6404820 | Method for storage and reconstruction of the extended hamming code for an 8-dimensional lattice quantizer A method of lattice-quantizing an eight-long data point to minimize storage requirements by acquiring the data point, multiplying each coordinate of the data point by 2 to form an inflated data point, rounding each coordinate of the rounded and inflated d... | 06/11/2002 |
| 6311183 | Method for finding large numbers of keywords in continuous text streams A method of full-text scanning for matches in a large dictionary of keywords is described, suitable for SDI (selective dissemination of information). The method is applicable to large dictionaries (hundreds of thousands of entries) and to arbitrary byte s... | 10/30/2001 |
| 6169969 | Device and method for full-text large-dictionary string matching using n-gram hashing A method and apparatus providing full-text scanning for matches in a large dictionary is described. The invention is suitable for SDI (selective dissemination of information) systems, accommodating large dictionaries (104 to 105 entr... | 01/02/2001 |
| 6141755 | Firewall security apparatus for high-speed circuit switched networks A network firewall security apparatus that enables a very high degree of traffic selectability yet avoids the usual performance penalty associated with firewalls. This approach is specific to high-speed circuit switched networks, Asynchronous Transfer Mod... | 10/31/2000 |
| 6084534 | Method for efficient storage and transmission of the centroids of a leech lattice quantizer A method of lattice quantizing a 24-long data point to minimize storage requirements by acquiring the data point, multiplying each coordinate of the data point by the square root of 8 to form an inflated data point, finding the closest point of the inflat... | 07/04/2000 |
| 6081323 | Measurement of Raman gain spectrum in optical fiber An apparatus and method for measuring the spectral dependence of the Raman gain coefficient in optical fibers is presented. This approach measures the power level of Raman scattering in both a walk-off limited region and a physical fiber length limited re... | 06/27/2000 |
| 6026053 | Photorefractive read-only optical memory apparatus using phase, frequency, and angular modulation The present invention stores and retrieves digital information by altering the phase transmission characteristics of a multiple layer phase recording by modulating the carrier frequency and the carrier frequency angle. These layers are organized into seve... | 02/15/2000 |
| 5841536 | Polarization interferometer apparatus using the polarization dependent phase lag in a birefringent retarder An inexpensive and accurate wavemeter for measuring the wavelength of monochromatic light is described. The device uses the wavelength dependent phase lag between principal polarization states of a length of birefringent material (retarder) as the basis f... | 11/24/1998 |
| 5822049 | Optical fiber coupler type wavelength measuring apparatus A fiber optic wavelength measuring apparatus using the wavelength dependent nature of a fused fiber coupler to measure the wavelength of light propagating in an optical fiber. The input light is coupled, using a fused fiber coupler, of the type commonly u... | 10/13/1998 |
