Resources Contact Us Home
Browse by Category: Main > Information Technology
Class Information
Number: 380/266
Name: Cryptography > Communication system using cryptography > Symmetric key cryptography > Including a modem
Description: Subject matter including a device converting a digital signal to a signal suitable for telephone network transfer.

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8660268 Keyed pseudo-random number generator Feb. 25, 2014
8611405 Detecting faults affecting communications links Dec. 17, 2013
8588410 Simplified secure symmetrical key management Nov. 19, 2013
8588423 Group/multicast key distribution method and update method based upon unicast session key and base station Nov. 19, 2013
8548171 Pair-wise keying for tunneled virtual private networks Oct. 1, 2013
8544077 Internet protocol telephony security architecture Sep. 24, 2013
8538002 Telephone system Sep. 17, 2013
8509440 PANA for roaming Wi-Fi access in fixed network architectures Aug. 13, 2013
8484449 Program, communication device, data processing method, and communication system Jul. 9, 2013
8254576 System and method for limiting access to data Aug. 28, 2012
8234217 Method and system for selectively providing access to content Jul. 31, 2012
7818794 Data traffic filtering indicator Oct. 19, 2010
7792300 Method and apparatus for re-encrypting data in a transaction-based secure storage system Sep. 7, 2010
7774602 Secure modem gateway concentrator Aug. 10, 2010
7676027 Systems and methods to send and receive encrypted DTMF digits in a data flow Mar. 9, 2010
7568223 Internet protocol telephony security architecture Jul. 28, 2009
7522727 Method and apparatus for providing authentication in a communication system Apr. 21, 2009
7424116 Method and apparatus for providing authentication in a communication system Sep. 9, 2008
7418598 Architecture of an encryption circuit implementing various types of encryption algorithms simultaneously without a loss of performance Aug. 26, 2008
7325250 Method and apparatus for preventing radio communication system access by an unauthorized modem Jan. 29, 2008
7308103 Power line communication device and method of using the same Dec. 11, 2007
7231045 Secure transaction modem storing unique indicia Jun. 12, 2007
7222242 Interface for facilitating facsimile transmissions via wireless communications networks May. 22, 2007
7206933 Software modem with privileged mode driver authentication Apr. 17, 2007
7197768 Software modem for communicating data using encrypted data and unencrypted control codes Mar. 27, 2007
7123719 Method and apparatus for providing authentication in a communication system Oct. 17, 2006
7096353 Software modem with privileged mode decryption of control codes Aug. 22, 2006
7061985 Universal modulator/demodulator Jun. 13, 2006
6961431 Analog privacy scrambler and scrambling method Nov. 1, 2005
6947968 Communication apparatus and method Sep. 20, 2005
RE38739 Facsimile apparatus May. 31, 2005
6859650 Mobile device, chip card and method of communication Feb. 22, 2005
6856686 Method and apparatus for securing e-mail attachments Feb. 15, 2005
6856687 Portable telecommunication security device Feb. 15, 2005
6715079 Method and system for soft modem protection Mar. 30, 2004
6681016 System for transfer of secure mission data Jan. 20, 2004
6498851 Data encryption and signal scrambling using programmable data conversion arrays Dec. 24, 2002
6496107 Voice-controlled vehicle control system Dec. 17, 2002
6430691 Stand-alone telecommunications security device Aug. 6, 2002
6243468 Software anti-piracy system that adapts to hardware upgrades Jun. 5, 2001
6181735 Modem equipped with a smartcard reader Jan. 30, 2001
6075863 Intelligent communication device Jun. 13, 2000
6049826 Method and system for cable modem initialization using dynamic servers Apr. 11, 2000
5978481 Modem compatible method and apparatus for encrypting data that is transparent to software applications Nov. 2, 1999
5835590 Method and apparatus for signal transmission and reception Nov. 10, 1998
5835603 Financial transaction system Nov. 10, 1998
5818937 Telephone tone security device Oct. 6, 1998
5805712 Apparatus and method for providing secured communications Sep. 8, 1998
5778071 Pocket encrypting and authenticating communications device Jul. 7, 1998
5621800 Integrated circuit that performs multiple communication tasks Apr. 15, 1997

1 2

  Recently Added Patents
Method of manufacturing a plurality of electronic assemblies
Switchgear and method for operating switchgear
Pear tree named `PremP109`
Manufacturing method for semiconductor device carrier and semiconductor package using the same
Performance monitoring of advanced process control systems
Systems, computer programs, and methods for controlling costs of a healthcare practice
System and method for efficient resource management of a signal flow programmed digital signal processor code
  Randomly Featured Patents
Vasoocclusive device including asymmetrical pluralities of fibers
System and method for detecting features on a laminated veneer lumber billet
Conveyor element tensioning mechanism
Enkephalin-like compounds in bovine adrenal medulla
Method and apparatus for applying a knot to a suture
Stage base, substrate processing apparatus, and maintenance method for stage
Securing of documents by means of digital watermark information
High-speed gamma pulse suppression circuit for semiconductor infrared detectors
Single-chip dynamic random access memory (DRAM) system and method for operating the system
Device to secure vanes to a rotor