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Class 380/22 - Having magnetic record carrier (e.g., tape, drum)


Subclass of Class 380 - Cryptography
Definition: Subject matter utilizing storage on or retrieval from a
No. of patents: 80
Last issue date: 02/16/2010


1    
NumberTitleIssue Date
7664257Method and apparatus for article authentication
An authentication method for authenticating an article in a device includes the steps of (a) reading an identification number stored on the article, (b) reading an authentication number stored on the article, (c) determining an input number based at least in part on...
02/16/2010
7505584Contents management method, contents management apparatus, and recording medium
An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is used to erase key information item recorded in the recording medium u...
03/17/2009
7401228Method for transmitting data, apparatus for recording data, medium for recording data, and apparatus for reproducing data
A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information higher. The data transmitting apparatus includes an err...
07/15/2008
7370212Issuing a publisher use license off-line in a digital rights management (DRM) system
A publishing user publishes digital content and issues to itself a corresponding digital publisher license to allow itself to render the published digital content. The publishing user is supplied with a publishing certificate from a digital rights management (DRM) s...
05/06/2008
7363512System and method of content copy control
A calculator system for performing duplication of contents does not necessarily perform screening, i.e., electronic watermark detection, rather, contents copy control information can be obtained otherwise. For example, in the event of copying a CD regarding which it...
04/22/2008
7286447Recording and/or reproducing apparatus and method of controlling the same
A recording and/or reproducing apparatus and a method of controlling the same. The method of controlling the apparatus for recording information in or reproducing information from a disc having a wobbled track, the method includes detecting a wobble signal recorded ...
10/23/2007
7277543Cryptographic combiner using two sequential non-associative operations
A stream cipher cryptosystem includes a keystream generator receiving a key and providing a keystream. A cryptographic combiner combines a first binary data sequence and the keystream with two non-associative operations to provide a second binary data sequence. In e...
10/02/2007
7246246System for keying protected electronic data to particular media to prevent unauthorized copying using a compound key
A system an method for distribution of electronic data over a network infrastructure that includes a client device for operation by a user desiring to receive the electronic data and server that contains the electronic data and offering the electronic data for downl...
07/17/2007
7242767Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method
Data is recorded in a first part PA1 in accordance with a signal format same as that of an existing CD at the lower limit (1.5 μm) of an allowable value of a Wreck pitch and the lower limit (1.2 m/sec) of a linear velocity. As a result, the data for the maxi...
07/10/2007
7219082Financial management system
A financial transaction network includes a customer network serviced by a host processor. The financial transaction network provides customers with a plurality of diverse and interchangeable financial products and financial services that customers may utilize to dir...
05/15/2007
7218733Encryption method, program for encryption, memory medium for storing the program, and encryption apparatus, as well as decryption method and decryption apparatus
The present invention relates to a cryptosystem. A keystream table [Ks] is a virtual data space. Every data of 1 byte in a secondary ciphertext E2 provides a vector directional component IR. The data Ks (IR) in the keystream table [Ks] designated by the d...
05/15/2007
7206942Recording medium cartridge and a recording-and-reproducing apparatus thereof
A recording-medium cartridge including a recording-medium and a cartridge memory. In this recording-medium cartridge, the cartridge memory holds a unique cryptographic key in the condition that the rewrite of the cryptographic key is forbidden, and is detachably att...
04/17/2007
7207060Method, system and computer program product for secure ticketing in a communications device
Method, system and computer program product for secure ticketing in a communications device. In particular, the method, system and computer program product utilizes cryptography and an external, read-write security element to securely transmit and store critical dat...
04/17/2007
7181008Contents management method, content management apparatus, and recording medium
An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is used to erase key information item recorded in the recording medium u...
02/20/2007
7155015Optical disk apparatus and data randomizing method using for optical disk apparatus
In the optical disk apparatus, an arbitrary seed data for randomizing is added to an original data to be recorded on a disk. One-bit randomizing data is determined by operation using one-bit original data or seed data, and plural-bit past randomized data. At the tim...
12/26/2006
7092524Device for and method of cryptographically wrapping information
A device for and method of cryptographically wrapping information by first constructing information to be wrapped into an even multiple of y bits. Information to be wrapped is parsed into equal blocks P1, P2, . . . , Pn. Next, regist...
08/15/2006
7058814System and method for providing time-limited access to people, objects and services
A limited tracking system and associated method that enable the use of personal encoded identification media to limit access to tracking information. The tracking system provides concurrent time-limited access to a large number of people, objects, information, servi...
06/06/2006
7006632Check authorization system and method
A self-authenticating check authorization system and method includes a check that has standard bank and account information printed on the MICR line, as well as a one-way hash value that is computed based on the standard bank and account information as well as a per...
02/28/2006
6992959Optical disk, method of reproducing and copying optical disk, and method of preventing illegal use of optical disk
In a DVD player, when data information in a DVD disk is played back, it is judged whether the data information is protected by a copyright or not on the basis of disk control information. Further, it is judged whether the DVD disk is writable or not, based on whethe...
01/31/2006
6977927Method and system of allocating storage resources in a storage area network
A system for allocating storage resources in a storage area network is described. A logical unit number (LUN) mapper receives at least one storage request parameter and maps the storage request parameters to at least one physical LUN. The LUN mapper includes at leas...
12/20/2005
6970843Financial management system
A financial transaction network includes a customer network serviced by a host processor. The financial transaction network provides customers with a plurality of diverse and interchangeable financial products and financial services that customers may utilize to dir...
11/29/2005
6963412Information processing apparatus, information processing method, storage medium, and program
Selection of an optimum print data conversion is provided such that: in a first conversion, print data is converted into image data, in a second conversion, the print data is converted into code data which is used by a printer to generate the image data; predictions...
11/08/2005
6938162Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system
A recording type optical disk on which data is recordable includes a data recording and reproducing area for recording data therein and reproducing data therefrom, and a read-only disk identification information area for recording disk identification information for...
08/30/2005
6934852Security keys for enhanced downstream access security for electronic file systems and drives
A method and system for protecting electronic files from unauthorized access. The drive on which the file is stored is provided with a hardware identification code, which is unique to the drive. An Operating System (OS) extension allows a user to provide a security ...
08/23/2005
6901511Portable terminals, servers, systems, and their program recording mediums
Data containing important information are stored in DB cards separable from terminals. The terminals and mediums are placed in corresponding relationship. Multi-security measures are taken to prevent a third party not authorized to access one of the DB cards from ac...
05/31/2005
6738903Password protected memory on replaceable components for printing devices
A printing device component having a memory tag with password protected data areas to control read and write access to the memory tag. The memory tag provides an encrypted authorization code to a printing device into which the component is installed. The printing de...
05/18/2004
6694033Reproduction of spatialized audio
Immersive environments for teleconferencing, collaborative shared spaces and entertainment require spatial audio. Such environments may have non-ideal sound reproduction conditions (loudspeaker positioning, listener placement or listening room geometry) w...
02/17/2004
6690794Electronic ticket system
An electronic ticket system for virtually preventing forgery, copying and other unauthorized uses of electronic tickets; for proving to a third party the contents of an electronic ticket contested between a user and an issuing party; and for protecting us...
02/10/2004
6404888Confusion data generator
A confusion data generator for the generation of non-linear confusion data utilizes a plurality of arrays acting as non-linear state machines to generate a stream of confusion data of a certain width. Each non-linear state machine contributes equally to t...
06/11/2002
6393125Initializer for a confusion data generator
A method and apparatus for the initialization of a class of non-linear confusion data generators is especially useful to enhance the security of non-linear confusion data generators that are restricted to short size secret keys or seeds. The initializer u...
05/21/2002
6131090Method and system for providing controlled access to information stored on a portable recording medium
A method and system for providing controlled access to information stored on a smartcard. The system includes a data processing center maintained by a trusted third party for storing a database of authorizations of various service providers to access info...
10/10/2000
6092195Encryption of defects map
A technique for authenticating a headerless-ID magnetic disk includes the steps of inserting the headerless-ID magnetic disk having a plurality of defective locations and an encrypted defect map into a removable drive unit, retrieving the encrypted defect...
07/18/2000
5907655Method and apparatus for recording and reproducing digital video signals as a function of copy protection of a tape
An apparatus records and reproduces digital video signals on a tape such that recording by another digital VTR or another analog VTR can be blocked, both through a digital interface and an analog interface, to provide a copy protection through various tec...
05/25/1999
5832088Method and apparatus for preventing data copying from a disk using data lengths too large for a pirate medium
Recording data is recorded on a CD-ROM so as to satisfy a relationship expressed as WࣙD and W>m where W is the data length of recording data recorded on the CD-ROM, D is the data length of effective data useful for being accessed (system area, file grou...
11/03/1998
5815630Tape dubbing and copy guard signal inserting method and apparatus
A high-speed tape dubbing method and apparatus for dubbing a signal recorded on a master tape onto slave tapes running at a speed N (for example, 3) times a standard tape running speed, which is capable of inserting a copy guard signal without degradation...
09/29/1998
5796826Apparatus for limiting reproducible number of magnetic recording medium
A reproducible number limiting apparatus for a magnetic recording medium using a reproducible number limiting algorithm is disclosed including: scrambling means for scrambling an input bit stream using a scrambling key; encryption means for encrypting the...
08/18/1998
5765030Processor emulator module having a variable pre-fetch queue size for program execution
An emulation module (110) includes a pre-fetch queue (116) having an adjustable size (126) to eliminate any dependence of virus decryption routines on the size of the pre-fetch queue (116) when emulating executable files to test for the presence of virus ...
06/09/1998
5751595Method for building and verifying authenticity of a rule system
A method for verifying that an integrated circuit design tool kit has not been modified in an unauthorized manner is accomplished by providing a verification procedure that, when an executable subrule of the tool kit has been selected to be part of the ru...
05/12/1998
5740244Method and apparatus for improved fingerprinting and authenticating various magnetic media
A method and apparatus is disclosed for determining the remanent noise in a magnetic medium by, for example, DC saturation of a region thereof and measurement of the remaining DC magnetization. A conventional magnetic recording transducer may be used to d...
04/14/1998
5715313Magnetic recording/reproducing method
Information is recorded on a floppy disk in a state in which the confidentiality of the information is maintained. An ID signal representing ID information is magnetically recorded down to the lower layer of a floppy disk when data is recorded. A data sig...
02/03/1998
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