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Browse by Category: Main > Information Technology
Class Information
Number: 380/22
Name: Cryptography > Electric signal modification > Having magnetic record carrier (e.g., tape, drum)
Description: Subject matter utilizing storage on or retrieval from a moving magnetic element for encoding the signal.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8599457 Image processing device, method, system and the associated program for generating a composite image Dec. 3, 2013
8339678 Apparatus, system, and method of process control based on the determination of embedded information Dec. 25, 2012
8335014 Image forming apparatus, control method, and program for copy-forgery-inhibited dot pattern calibration Dec. 18, 2012
8213050 Image processing device, method, system and the associated program for generating a composite image Jul. 3, 2012
8144368 Automated methods for distinguishing copies from original printed objects Mar. 27, 2012
8125691 Information processing apparatus and method, computer program and computer-readable recording medium for embedding watermark information Feb. 28, 2012
8089661 Embedding authentication information to prevent document spoofing Jan. 3, 2012
8023159 Marking images of text with speckle patterns for theft deterrence Sep. 20, 2011
7970137 Content reproduction apparatus, content recording apparatus, network system, and content recording/reproduction method Jun. 28, 2011
7958371 Methods and apparatus for secure operating system distribution in a multiprocessor system Jun. 7, 2011
7929704 Modified triple wrap encryption/decryption system Apr. 19, 2011
7913119 Method and device for verifying integrity of data acquisition pathways Mar. 22, 2011
7752136 Check authorization system and method Jul. 6, 2010
7747530 Check authorization system and method Jun. 29, 2010
7664257 Method and apparatus for article authentication Feb. 16, 2010
7505584 Contents management method, contents management apparatus, and recording medium Mar. 17, 2009
7502946 Using hardware to secure areas of long term storage in CE devices Mar. 10, 2009
7401228 Method for transmitting data, apparatus for recording data, medium for recording data, and apparatus for reproducing data Jul. 15, 2008
7363512 System and method of content copy control Apr. 22, 2008
7242767 Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method Jul. 10, 2007
7219082 Financial management system May. 15, 2007
7206942 Recording medium cartridge and a recording-and-reproducing apparatus thereof Apr. 17, 2007
7181008 Contents management method, content management apparatus, and recording medium Feb. 20, 2007
7155015 Optical disk apparatus and data randomizing method using for optical disk apparatus Dec. 26, 2006
7092524 Device for and method of cryptographically wrapping information Aug. 15, 2006
7006632 Check authorization system and method Feb. 28, 2006
6970843 Financial management system Nov. 29, 2005
6938162 Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system Aug. 30, 2005
6934852 Security keys for enhanced downstream access security for electronic file systems and drives Aug. 23, 2005
6901511 Portable terminals, servers, systems, and their program recording mediums May. 31, 2005
6738903 Password protected memory on replaceable components for printing devices May. 18, 2004
6694033 Reproduction of spatialized audio Feb. 17, 2004
6690794 Electronic ticket system Feb. 10, 2004
6404888 Confusion data generator Jun. 11, 2002
6393125 Initializer for a confusion data generator May. 21, 2002
6131090 Method and system for providing controlled access to information stored on a portable recording medium Oct. 10, 2000
6092195 Encryption of defects map Jul. 18, 2000
5907655 Method and apparatus for recording and reproducing digital video signals as a function of copy protection of a tape May. 25, 1999
5832088 Method and apparatus for preventing data copying from a disk using data lengths too large for a pirate medium Nov. 3, 1998
5815630 Tape dubbing and copy guard signal inserting method and apparatus Sep. 29, 1998
5796826 Apparatus for limiting reproducible number of magnetic recording medium Aug. 18, 1998
5765030 Processor emulator module having a variable pre-fetch queue size for program execution Jun. 9, 1998
5751595 Method for building and verifying authenticity of a rule system May. 12, 1998
5740244 Method and apparatus for improved fingerprinting and authenticating various magnetic media Apr. 14, 1998
5715313 Magnetic recording/reproducing method Feb. 3, 1998
5666413 Scrambler of information stored on magnetic memory media Sep. 9, 1997
RE35599 Method and apparatus for enhancing a randomly varying security characteristic Sep. 2, 1997
5659613 Method and apparatus for copy protection for various recording media using a video finger print Aug. 19, 1997
5636278 Player for picture concealment and concealment release Jun. 3, 1997
5546462 Method and apparatus for fingerprinting and authenticating various magnetic media Aug. 13, 1996

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