| 7006632 |
Check authorization system and method |
| Feb-28-2006 |
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... |
| 6970843 |
Financial management system |
| Nov-29-2005 |
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... |
| 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 |
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... |
| 6934852 |
Security keys for enhanced downstream access security for electronic file systems and drives |
| Aug-23-2005 |
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... |
| 6901511 |
Portable terminals, servers, systems, and their program recording mediums |
| May-31-2005 |
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... |
| 6738903 |
Password protected memory on replaceable components for printing devices |
| May-18-2004 |
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... |
| 6694033 |
Reproduction of spatialized audio |
| Feb-17-2004 |
Immersive environments for teleconferencing, collaborative shared spaces and entertainment require spatial audio. Such environments may have non-ideal sound reproduction conditions (loudspeaker positioning,... |
| 6690794 |
Electronic ticket system |
| Feb-10-2004 |
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... |
| 6404888 |
Confusion data generator |
| Jun-11-2002 |
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.... |
| 6393125 |
Initializer for a confusion data generator |
| May-21-2002 |
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... |
| 6131090 |
Method and system for providing controlled access to information stored on a portable recording medium |
| Oct-10-2000 |
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... |
| 6092195 |
Encryption of defects map |
| Jul-18-2000 |
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... |
| 5907655 |
Method and apparatus for recording and reproducing digital video signals as a function of copy protection of a tape |
| May-25-1999 |
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,... |
| 5832088 |
Method and apparatus for preventing data copying from a disk using data lengths too large for a pirate medium |
| Nov-3-1998 |
Recording data is recorded on a CD-ROM so as to satisfy a relationship expressed as W.gtoreq.D and W>m where W is the data length of recording data recorded on the CD-ROM, D is the data length of effective... |
| 5815630 |
Tape dubbing and copy guard signal inserting method and apparatus |
| Sep-29-1998 |
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... |
| 5796826 |
Apparatus for limiting reproducible number of magnetic recording medium |
| Aug-18-1998 |
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... |
| 5765030 |
Processor emulator module having a variable pre-fetch queue size for program execution |
| Jun-9-1998 |
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... |
| 5751595 |
Method for building and verifying authenticity of a rule system |
| May-12-1998 |
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... |
| 5740244 |
Method and apparatus for improved fingerprinting and authenticating various magnetic media |
| Apr-14-1998 |
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... |
| 5715313 |
Magnetic recording/reproducing method |
| Feb-3-1998 |
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... |
| 5666413 |
Scrambler of information stored on magnetic memory media |
| Sep-9-1997 |
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 storage... |
| 5659613 |
Method and apparatus for copy protection for various recording media using a video finger print |
| Aug-19-1997 |
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 permit... |
| 5636278 |
Player for picture concealment and concealment release |
| Jun-3-1997 |
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 includes... |
| 5546462 |
Method and apparatus for fingerprinting and authenticating various magnetic media |
| Aug-13-1996 |
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... |
| 5513260 |
Method and apparatus for copy protection for various recording media |
| Apr-30-1996 |
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 handle... |
| 5488663 |
Encoding methods for generating a digital signal containing modulated bit allocation information, and record carriers containing that signal |
| Jan-30-1996 |
Transmission system for transmitting and receiving, and subband encoding methods for generating for transmission, digital signals containing modulated bit allocation information; and record carriers containing... |
| 5481609 |
System for controlling access to broadcast transmissions |
| Jan-2-1996 |
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 identical... |
| 5479510 |
Automated data card payment verification method |
| Dec-26-1995 |
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 and... |
| 5442706 |
Secure mobile storage |
| Aug-15-1995 |
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, with... |
| 5434917 |
Unforgeable identification device, identification device reader and method of identification |
| Jul-18-1995 |
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 expensive.... |
| 5428683 |
Method and apparatus for fingerprinting and authenticating magnetic media |
| Jun-27-1995 |
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 magnetic... |
| 5418853 |
Apparatus and method for preventing unauthorized copying of video signals |
| May-23-1995 |
In a digital video tape recorder (VTR) which reproduces digital video and audio signals from a magnetic tape, a copy protect bit in the reproduced digital video signal is detected, and on the basis of... |
| 5408505 |
Method and apparatus for process control, tension control, and testing of magnetic media |
| Apr-18-1995 |
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 cross-correlation... |
| 5375171 |
Transmission system, and transmitter and receiver used in the transmission system for transmitting and receiving digital signals containing modulated bit allocation information |
| Dec-20-1994 |
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 encodes... |
| 5365586 |
Method and apparatus for fingerprinting magnetic media |
| Nov-15-1994 |
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 magnetic... |
| 5337358 |
Apparatus for recording a transaction including authenticating an identification card |
| Aug-9-1994 |
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 first... |
| 5321753 |
Secure communication of static information by electronic means |
| Jun-14-1994 |
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 bits... |
| 5307412 |
Random coding cipher system and method |
| Apr-26-1994 |
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 (with... |
| 5297202 |
Apparatus and method for producing a digitized transaction record including an encrypted signature |
| Mar-22-1994 |
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. Thereafter... |
| 5282249 |
System for controlling access to broadcast transmissions |
| Jan-25-1994 |
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 identical... |
| 5235641 |
File encryption method and file cryptographic system |
| Aug-10-1993 |
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 apparatus,... |
| 5202922 |
Data communication system |
| Apr-13-1993 |
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 encrypted... |
| 5195133 |
Apparatus and method for producing a digitized transaction record including an encrypted signature |
| Mar-16-1993 |
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. Thereafter... |
| 5177344 |
Method and appparatus for enhancing a randomly varying security characteristic |
| Jan-5-1993 |
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 head can... |
| 5097504 |
Method and device for qualitative saving of digitized data |
| Mar-17-1992 |
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 compression... |
| 5040210 |
Lockable tape cassette control system |
| Aug-13-1991 |
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 with... |
| 4731575 |
Prepayment metering system using encoded purchase cards |
| Mar-15-1988 |
A prepayment utility metering method and apparatus which uses encoded mag-stripe cards to transfer purchase information from the utility billing office to the customer's premises. The mag-stripe cards... |
| 4644493 |
Implementing a shared higher level of privilege on personal computers for copy protection of software |
| Feb-17-1987 |
Method and apparatus which restricts software, distributed on magnetic media, to use on a single computing machine. The original medium is functionally uncopyable, until it is modified by the execution... |
| 4578703 |
Subscription television system |
| Mar-25-1986 |
A wireless subscription television system arranged to transmit ciphered video signals from a transmitter to receivers in which the transmitting system comprises an enable code setting means, a transmitting... |
| 4488001 |
Intellectual properties protection device |
| Dec-11-1984 |
A device for deciphering encoded information is disclosed which comprises logic elements which combine a key input to implement a predetermined set of boolean transformations thereby yielding a corresponding... |
