Question for Duncan Campbell re: Word-Spotting Capabilities

[Richard Clayton]

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In article <4.2.0.58.19990805004205.00a6ef00@pop.gn.apc.org>, Duncan
Campbell <duncan@gn.apc.org> writes

>The topic spotting methods that NSA is working on are based on n-gram 
>analysis,

....

>NSA has patented this method

US patent 5,752,051  (on the web - just type the number into the search
engine at <URL:http://164.195.100.11/netahtml/srchnum.htm> ... the
numeric reference is probably not unrelated to a site which won't let
you get at direct (and hence short) web references)

however it could be the earlier..

5,418,951   Method of retrieving documents that concern the same topic  

they are busy little people :)  see also,

5,835,912   Method of efficiency and flexibility storing, retrieving,
            and modifying data in any language representation 

5,832,478   Method of searching an on-line dictionary using syllables
            and syllable count 


They have a number of other patents (some of these may be false hits :(
I've not had time to look at them all). Conspiracy theorists may wish to
speculate on what they're doing :) especially with 5,224,756 (which
really does seem to be assigned to the NSA!)

5,903,683   Device for modulating an optical signal using a single wave
            guide  
5,841,536   Polarization interferometer apparatus using the polarization
            dependent phase lag in a birefringent retarder  
5,838,441   Wide field of view coherent light detector and locator  
5,822,049   Optical fiber coupler type wavelength measuring apparatus  
5,812,609   Communication intercept device using digital drop receivers
            in multiple tiers  
5,803,771   Electrical connector that minimizes bent pins  
5,631,961   Device for and method of cryptography that allows third
            party access  
5,533,033   Device for and method of correcting errors in formatted
            modem transmissions  
5,500,899   Secure voice conferencing apparatus  
5,489,856   Laser-programmable clocked-logic integrated-circuit  
5,450,332   Method of creating a mebes pattern-generation file for use
            in the manufacture of integrated-circuit masks  
5,428,686   Secure communication system having long-term keying variable  
5,363,171   Photolithography exposure tool and method for in situ
            photoresist measurments and exposure control  
5,351,301   Authenticator circuit  
5,349,551   Device for and method of preforming an N-bit modular
            multiplication in approximately N/2 steps  
5,328,046   Self-locking, tamper-evident package  
5,264,794   Method of measuring magnetic fields on magnetically recorded
            media using a scanning tunneling microscope and magnetic
            probe  
5,245,659   Constant ratio coding for multipath rejection and ECCM
            enhancement  
5,245,408   Electro-optic coherent light detector  
5,238,134   Limited-reuse tamper-evident container  
5,237,615   Multiple independent binary bit stream generator  
5,224,756   Integrated child seat for vehicle  
5,101,374   Secure, fast storage and retrieval without interactive
            checking  
5,101,371   Apparatus for performing a bit serial orthogonal
            transformation instruction  
5,087,946   Composite instant on fuser element  
5,020,018   Outer product optical interferometer with hologram  
5,012,440   Outer product optical interferometer with mask  
4,903,339   Locally nulled sine-wave total power alarm for intrusion
            detecting optical communications systems  
4,858,113   Reconfigurable pipelined processor  
4,818,335   Tapered wet etching of contacts using a trilayer silox
            structure  
4,755,745   Incoherent light optical processor  
4,729,632   Common path acoustoptic adaptive linear predictors  
4,709,652   Pneumatic audio sweep generator  
4,630,285   Method for reducing group delay distortion  
4,579,421   Optical adaptive filter  
4,567,572   Fast parallel sorting processor  
4,497,042   Magnetic bubble logic apparatus  
4,468,789   Method for serial transmission and receipt of binary
            information  
4,468,093   Hybrid space/time integrating optical ambiguity processor  
4,440,472   Space integrating ambiguity processor  
4,435,783   Magnetic bubble logic apparatus  
4,429,180   Apparatus for simultaneous generation of key at two
            locations  
4,413,879   Method and apparatus for side launch excitation of selected
            modes in graded-index optical fibers  
4,383,261   Method for laser recording utilizing dynamic preheating  
4,375,626   Precision linear tuning circuit  
4,350,984   Method of position fixing active sources utilizing
            differential doppler  
4,262,992   Variable integrated optical logic element  
4,225,938   Time-integrating acousto-optical processors  
4,161,032   Serial arithmetic functions with magnetic bubble logic
            elements  

now I know what Intelligence Analysts do all day :)

- -- 
richard                      richard.clayton    @    T U R N P I K E .com
        only 25 MPs still need adopting:  http://www.stand.org.uk/
"Assembly of Japanese bicycle require great peace of mind" quoted in ZAMM

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