H04K

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Description

SECRET COMMUNICATION; JAMMING OF COMMUNICATION

Subclasses

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Subclass Title
1/00 Secret communication (ciphering or deciphering apparatus per se G09C ; systems with reduced bandwidth or suppressed carrier H04B 1/66 ; spread spectrum techniques H04B 1/69 ; by using a sub-carrier H04B 14/08 ; by multiplexing H04J ; transmission systems for secret digital information H04L 9/00 ; secret or subscription television systems H04N 7/16, H04N 21/00 )
1/02 Secret communication (ciphering or deciphering apparatus per se G09C ; systems with reduced bandwidth or suppressed carrier H04B 1/66 ; spread spectrum techniques H04B 1/69 ; by using a sub-carrier H04B 14/08 ; by multiplexing H04J ; transmission systems for secret digital information H04L 9/00 ; secret or subscription television systems H04N 7/16, H04N 21/00 ) by adding a second signal to make the desired signal unintelligible
1/04 Secret communication (ciphering or deciphering apparatus per se G09C ; systems with reduced bandwidth or suppressed carrier H04B 1/66 ; spread spectrum techniques H04B 1/69 ; by using a sub-carrier H04B 14/08 ; by multiplexing H04J ; transmission systems for secret digital information H04L 9/00 ; secret or subscription television systems H04N 7/16, H04N 21/00 ) by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band
1/06 Secret communication (ciphering or deciphering apparatus per se G09C ; systems with reduced bandwidth or suppressed carrier H04B 1/66 ; spread spectrum techniques H04B 1/69 ; by using a sub-carrier H04B 14/08 ; by multiplexing H04J ; transmission systems for secret digital information H04L 9/00 ; secret or subscription television systems H04N 7/16, H04N 21/00 ) by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards
1/08 Secret communication (ciphering or deciphering apparatus per se G09C ; systems with reduced bandwidth or suppressed carrier H04B 1/66 ; spread spectrum techniques H04B 1/69 ; by using a sub-carrier H04B 14/08 ; by multiplexing H04J ; transmission systems for secret digital information H04L 9/00 ; secret or subscription television systems H04N 7/16, H04N 21/00 ) by varying the polarisation of transmitted waves

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Recent Patents

Not Available

Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2018/0331,780 PENALTY-BASED ENVIRONMENT MONITORING May 10, 17 Nov 15, 18 , Not available
2018/0331,764 DOWN CONVERSION SYSTEM AND METHOD Dec 23, 15 Nov 15, 18 , LEONARDO MW LTD
2018/0309,537 Motion Safety Interlock for Remote Control Systems Apr 23, 18 Oct 25, 18 , Not available
2018/0309,536 METHOD AND DEVICE FOR SUPPRESSING INTERFERING SIGNALS IN A SATELLITE PAYLOAD SIGNAL Jul 08, 16 Oct 25, 18 , Not available
2018/0303,003 PORTABLE, COMPACT, RAPID EMPLOYABLE, REDUCED POWER CONSUMPTION, AND LIGHTWEIGHT INFORMATION COMMAND AND CONTROL SYSTEM INCLUDING AN INTEGRATED SHIPPING CASE/EQUIPMENT MOUNTING STRUCTURE, MULTI-APPLICATION WORK STATION, COMMUNICATION SYSTEM, AN EXPANDABLE DISPLAY ARRAY, LOCATION DETERMINING SYSTEM, LOW POWER COOLING SYSTEM, AND DATA CENTER SECTION WITH DATA SERVERS AND NETWORK HUB CAPABILITY WITH DESIGN CONFIGURATIONS ENABLING OPERATION WITH REDUCED OR PASSIVE THERMAL CONTROL CAPABILITIES Apr 16, 18 Oct 18, 18 , The United States of America as represented by the Secretary of the Navy

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Patents Issued To Date - By Filing Year

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