Reflective array compressor
August 6, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3836876 3851951 3883831 Surface acoustic wave strain detector and gage Surface wave dispersive acoustic delay line Chirp transform correlator Saw delay line with multiple reflective taps Saw channelized filters Elastic surface wave convolva having wave width converting means and communication system using same Surface acoustic wave chirp filter InventorAssigneeApplicationNo. 130686 filed on 08/06/1998US Classes:382/232, IMAGE COMPRESSION OR CODING310/313D, Grating or reflector in wave path333/153, Including discontinuities within propagation means333/154, Significant transmitting or receiving transducer structure333/195, With wave-modifying means (e.g., reflectors, resonators, diffractors, multistrip couplers, etc.)382/208, With a tapped delay line382/218ComparatorExaminersPrimary: Chang, JonAttorney, Agent or FirmInternational ClassesH03H 009/00G06K 009/68 AbstractA reflective array compressor for a fast pattern recognition system. The system includes a combination of digital and analog processing circuitry which allows the system to achieve super computing processing speeds within an open personal computer architecture. The system receives a bit map which is representative of the unknown pattern, such as a picture of an unknown person. The bit map could have multiple people in it--no other system has "faces in the crowd" ability. The bit map associated with the unknown pattern is then pre-processed and compared against a plurality of known patterns in a database to determine how well the unknown pattern correlates with the known patterns. The reflective array compressor employs concave input and output transducers, and curved reflectors.Other References
Field of SearchWith a tapped delay lineIMAGE COMPRESSION OR CODING Comparator Delay lines including elastic surface wave propagation means Significant transmitting or receiving transducer structure Using surface acoustic waves With wave-modifying means (e.g., reflectors, resonators, diffractors, multistrip couplers, etc.) Including discontinuities within propagation means Surface acoustic wave devices Grating or reflector in wave path | |
