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7505584 |
Contents 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...
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7502946 |
Using hardware to secure areas of long term storage in CE devices
A system includes long-term storage (e.g., flash memory) for storing sensitive data and critical components of a consumer electronic (CE) device such as an operating system (OS) kernel, private...
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7401228 |
Method 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...
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7363512 |
System 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...
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7242767 |
Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method
Data is recorded in a first part PA 1 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...
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7219082 |
Financial 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...
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7181008 |
Contents 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...
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7155015 |
Optical 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...
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7092524 |
Device 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...
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7006632 |
Check 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...
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6938162 |
Optical 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...
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6934852 |
Security 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...
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6901511 |
Portable 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...
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6738903 |
Password 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...
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6694033 |
Reproduction 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...
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6690794 |
Electronic 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...
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6404888 |
Confusion 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...
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6393125 |
Initializer 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...
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6131090 |
Method 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...
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6092195 |
Encryption 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...
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5907655 |
Method 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...
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5832088 |
Method 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 W≥D and W>m where W is the data length of recording data recorded on the CD-ROM, D is the data length of...
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5815630 |
Tape 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...
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5796826 |
Apparatus 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...
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5765030 |
Processor 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...
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5751595 |
Method 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...
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5740244 |
Method 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...
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5715313 |
Magnetic 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...
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5666413 |
Scrambler of information stored on magnetic memory media
A device for scrambling the information held by magnetic memory storage media and rendering the information inaccessible. The portable device provides a passage through which a magnetic memory...
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RE35599 |
Method and apparatus for enhancing a randomly varying security characteristic
A randomly varying modulated current is generated and used to drive a magnetic write head in an apparatus for enhancing a randomly varying magnetic security characteristic of a medium. The write...
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5659613 |
Method and apparatus for copy protection for various recording media using a video finger print
A method and apparatus for copyright protection for various recording media such as Digital Video Discs (DVDs) uses a combination of a Video Finger Print Signal and an Authenticating Signature to...
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5636278 |
Player for picture concealment and concealment release
A player for concealing a picture or releasing picture concealment using a secret code provided by a user while recording and/or reproducing of a video signal with respect to a recording medium...
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5513260 |
Method and apparatus for copy protection for various recording media
A method and apparatus for copyright protection for various recording media such as compact discs (CDs) uses a combination of symmetrical and asymmetrical data encryption to permit the player to...
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5488663 |
Encoding methods for generating a digital signal containing modulated bit allocation information, and record carriers containing that signal
Transmission system for transmitting and receiving, and subband encoding methods for generating for transmission, digital signals containing modulated bit allocation information; and record...
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5481609 |
System for controlling access to broadcast transmissions
A system for controlling access to broadcast transmissions including a transmitter having a transmission encoder for scrambling the broadcast, a multiplicity of subscriber receivers, each having an...
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5479510 |
Automated data card payment verification method
A method of data transmission over existing telephone lines and later verification of that transmission includes electronic payment verification using telephone transmission of payment information...
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5442706 |
Secure mobile storage
A method of secure data transfer by physical transport of an electronic storage device wherein the sender, using a type 1 encryption/decryption algorithm, sequentially encrypts data, in any order,...
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5434917 |
Unforgeable identification device, identification device reader and method of identification
Memory cards are cheap and contain memory means, but can be forged and duplicated easily. Smart-cards contain also a microprocessor and can be used for cryptographic purposes, but are much more...
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5408505 |
Method and apparatus for process control, tension control, and testing of magnetic media
A method and apparatus is disclosed for using the remanent noise of a magnetic medium as a fingerprint for benchmark testing of the magnetic medium as it is both manufactured and used. A...
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5375171 |
Transmission system, and transmitter and receiver used in the transmission system for transmitting and receiving digital signals containing modulated bit allocation information
Transmission system, and transmitter and receiver for use in the transmission system for transmitting and receiving digital signals containing modulated bit allocation information. The transmitter...
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5365586 |
Method and apparatus for fingerprinting magnetic media
A method and apparatus is disclosed for determining the remanent noise in a magnetic medium by DC saturation of a region thereof and measurement of the remaining DC magnetization. A conventional...
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5337358 |
Apparatus for recording a transaction including authenticating an identification card
Apparatus for recording a transaction where the transaction includes authenticating an identification card; the card having information pertaining to an object or other entity to be identified on a...
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5321753 |
Secure communication of static information by electronic means
A method and apparatus (10) for the secure transmission of static data (16) from a tag (11) to a remote reader (12). Each time the static data (16) is to be transmitted to the reader (12), the 10...
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5307412 |
Random coding cipher system and method
In a random coding cipher system and method, a sender and receiver pair share a long string of random digits, the masking tape. To encrypt a plaintext message, the sender generates a random integer...
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5297202 |
Apparatus and method for producing a digitized transaction record including an encrypted signature
A method and system for generating a completed payment document ready for signature in image form. The document is signed by a customer and a copy of the signature is captured in digital form....
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5235641 |
File encryption method and file cryptographic system
In an information processing system having an upper rank apparatus and an external storage device which performs transmission and reception of data between the storage device and the upper rank...
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5202922 |
Data communication system
When a final session is performed between a host device and an IC card, common key data stored in the host device is encrypted by an updated session key and transmitted to the IC card in which the...
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5177344 |
Method and appparatus for enhancing a randomly varying security characteristic
A randomly varying modulated current is generated and used to drive a magnetic write head in an apparatus for enhancing a randomly varying magnetic security characteristic of a medium. The write...
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5097504 |
Method and device for qualitative saving of digitized data
An encrypted signature S representative of the information and of the identity of the holder of the information is established by means of a calculation algorithm for the encryption and the...
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5040210 |
Lockable tape cassette control system
A tape cassette which locks up to prevent more than one play through of the information carrying portion of the cassette has a label with an encrypted unlocking combination for the cassette along...
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