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Class Information
Number: 380/275
Name: Cryptography > Communication system using cryptography > Speech scrambler detail
Description: Subject matter wherein a signal representative of speech is made unintelligible.

Sub-classes under this class:

Class Number Class Name Patents
380/276 Including sampling 60

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8705348 Use of metadata for time based anti-replay Apr. 22, 2014
8619989 VolP encryption bridging by home wireless router Dec. 31, 2013
8619996 Apparatus and method for transmitting digital multimedia broadcasting data, and method and apparatus for receiving digital multimedia broadcasting data Dec. 31, 2013
8552900 System and method of clocking low sample rate analog to digital converters while minimizing linearity errors Oct. 8, 2013
8520852 Method and apparatus for store and replay functions in a digital radio broadcasting receiver Aug. 27, 2013
8498869 Deriving geographic distribution of physiological or psychological conditions of human speakers while preserving personal privacy Jul. 30, 2013
8462942 Method and system for securing packetized voice transmissions Jun. 11, 2013
8422679 Method and device for sending encryption parameters Apr. 16, 2013
8355514 Audio encoding to convey auxiliary information, and media embodying same Jan. 15, 2013
8244305 Efficient, secure digital wireless voice telephony via selective encryption Aug. 14, 2012
8209750 Encryption of voice and data in a single data stream in a deployable, secure communication system Jun. 26, 2012
8200480 Deriving geographic distribution of physiological or psychological conditions of human speakers while preserving personal privacy Jun. 12, 2012
8117446 Method and system for secured real time protocol in scalable distributed conference applications Feb. 14, 2012
8098693 Method of early starting the operation of a descrambler Jan. 17, 2012
8036249 System and method of data verification Oct. 11, 2011
7961881 Apparatus and methods for including codes in audio signals Jun. 14, 2011
7877670 Error correcting decoding for convolutional and recursive systematic convolutional encoded sequences Jan. 25, 2011
7725779 Multi-valued scrambling and descrambling of digital data on optical disks and other storage media May. 25, 2010
7558389 Method and system of generating a speech signal with overlayed random frequency signal Jul. 7, 2009
7536014 Apparatus and method for generating scrambling code in UMTS mobile communication system May. 19, 2009
7522730 Universal microphone for secure radio communication Apr. 21, 2009
7505898 Method and system for masking speech Mar. 17, 2009
7460671 Encryption processing apparatus and method for voice over packet networks Dec. 2, 2008
7362867 Apparatus and method for generating scrambling code in UMTS mobile communication system Apr. 22, 2008
7308104 Forward multiple scrambling code generating method and apparatus Dec. 11, 2007
7184952 Method and system for masking speech Feb. 27, 2007
7143028 Method and system for masking speech Nov. 28, 2006
7120255 Java applications for secured palm held cellular communications Oct. 10, 2006
7047405 Method and apparatus for providing secure processing and data storage for a wireless communication device May. 16, 2006
7046809 Device and method for scrambling/descrambling voice and data for mobile communication system May. 16, 2006
6996237 Apparatus and methods for including codes in audio signals Feb. 7, 2006
6961431 Analog privacy scrambler and scrambling method Nov. 1, 2005
6907123 Secure voice communication system Jun. 14, 2005
6658112 Voice decoder and method for detecting channel errors using spectral energy evolution Dec. 2, 2003
6421445 Apparatus and methods for including codes in audio signals Jul. 16, 2002
6356638 Radio wireline interface and method for secure communication Mar. 12, 2002
6339646 Slotted mode code usage in a cellular communications system Jan. 15, 2002
6272633 Methods and apparatus for transmitting, receiving, and processing secure voice over internet protocol Aug. 7, 2001
6266418 Encryption and authentication methods and apparatus for securing telephone communications Jul. 24, 2001
6266412 Encrypting speech coder Jul. 24, 2001
6260143 Host-based caching method and system for copy protected content Jul. 10, 2001
6256491 Voice security between a composite channel telephone communications link and a telephone Jul. 3, 2001
6078668 Apparatus and method for concealing data bursts in an analog scrambler using audio repetition Jun. 20, 2000
5852662 Scrambler bypass system Dec. 22, 1998
5784422 Apparatus and method for accurate synchronization with inbound data packets at relatively low sampling rates Jul. 21, 1998
5764763 Apparatus and methods for including codes in audio signals and decoding Jun. 9, 1998
5742679 Optimized simultaneous audio and data transmission using QADM with phase randomization Apr. 21, 1998
5710813 Digital voice recording/reproducing apparatus Jan. 20, 1998
5621800 Integrated circuit that performs multiple communication tasks Apr. 15, 1997
5617476 Audio scrambling system for scrambling and descrambling audio signals Apr. 1, 1997

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