Patents-Review.com
ClassID:

224653 ⎘

H04K1/003 - CPC Classification

Classification description:

Secret communication by varying carrier frequency at or within predetermined or random intervals

Recent Application in this class:
#1
20250337734
2025-10-30

SYSTEMS AND METHODS FOR VARIABLE-LENGTH ENCODING AND DECODING FOR ENHANCING COMPUTER SYSTEMS

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20250023656
2025-01-16

SYSTEM AND METHOD FOR INTELLIGENT POWER MANAGEMENT

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20240356913
2024-10-24

SYSTEMS AND METHODS FOR VARIABLE-LENGTH ENCODING AND DECODING FOR ENHANCING COMPUTER SYSTEMS

 #4
20240223271
2024-07-04

COMMUNICATION SYSTEM

 #5
20230299868
2023-09-21

OPERATING METHOD OF ELECTRONIC APPARATUS FOR TRANSMITTING SIGNAL AND ELECTRONIC APPARATUS SUPPORTING THE SAME

 #6
20230082251
2023-03-16

JOINT RANDOM SUBCARRIER SELECTION AND CHANNEL-BASED ARTIFICIAL SIGNAL DESIGN AIDED PLS

 #7
20220094460
2022-03-24

Application of key exchange based physical layer security methods

 #8
20210376921
2021-12-02

Communication system

 #9
20210168131
2021-06-03

Systems and methods for variable-length encoding and decoding for enhancing computer systems

 #10
20210099245
2021-04-01

Methods and devices for the concealment of radio identifiers and transmitter positions

 #11
20200084200
2020-03-12

Systems and methods for variable-length encoding and decoding for enhancing computer systems

 #12
20190222502
2019-07-18

Network communication methods and apparatus

 #13
20190088165
2019-03-21

Transmission security method using bounded arbitrary frequency modulation

 #14
20190036638
2019-01-31

Determining a frequency for propulsor engine communication sessions

 #15
20190020645
2019-01-17

Systems and methods for variable-length encoding and decoding for enhancing computer systems

 #16
20180343079
2018-11-29

Multi-protocol communications between host devices and stylus devices

 #17
20180026711
2018-01-25

Communication system

 #18
20180026679
2018-01-25

Method for processing data by means of an electronic data-acquisition device, corresponding device and program

 #19
20170288805
2017-10-05

Device and method for sound wave communication

 #20
20160248541
2016-08-25

Secure open-air communication system utilizing multi-channel decoyed transmission

 #21
20150124583
2015-05-07

Network communication methods and apparatus

 #22
20130266136
2013-10-10

Method, system, and devices for fast session transfer of wireless devices from one frequency band to another

 #23
20130145030
2013-06-06

CONTROL DEVICE, TERMINAL APPARATUS, AND COMMUNICATION SYSTEM

 #24
20130010951
2013-01-10

Secure open-air communication system utilizing multichannel decoyed transmission

 #25
20120302155
2012-11-29

Multi-mode communication unit

 #26
20110033051
2011-02-10

Method and apparatus for reducing probability of detection, improving jamming resistance and security for broadband wireless systems

 #27
20110033044
2011-02-10

Secure open-air communication system utilizing multi-channel decoyed transmission

 #28
20100177782
2010-07-15

Confidential transmission of data by change of frequency in a telecommunications network

 #29
20100124332
2010-05-20

Secure wireless communications

 #30
20070129012
2007-06-07

Portable digital devices

 #31
20060285848
2006-12-21

Secure analog communication system using time and wavelength scrambling

 #32
20060209766
2006-09-21

Secure open-air communication system utilizing multi-channel decoyed transmission