Patents Examined by Linh L D Son
  • Patent number: 7373513
    Abstract: A method of transmarking a watermarked media signal to adapt the watermark to the robustness and perceptibility constraints of a new environment. This transmarking method detects the first digital watermark in the media signal. It then embeds message information from the first digital watermark into a second digital watermark in the media signal before the media signal undergoes a transformation process. The second digital watermark is adapted to survive the transformation process. A variation of this method detects the first digital watermark in the media signal, converts the media signal to a different format, and embeds message information from the first digital watermark into a second digital watermark in the converted media signal. The second digital watermark is adapted to robustness or perceptibility parameters associated with the new format.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: May 13, 2008
    Assignee: Digimarc Corporation
    Inventor: Kenneth L. Levy
  • Patent number: 7363486
    Abstract: A method and system for authenticating an end user to one or more remote computer systems using a communications pipe to send authentication codes from a personal security device to one or more remote computer systems and limiting authentication transactions to a secure hub.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: April 22, 2008
    Assignee: Activcard
    Inventors: Yves Louis Gabriel Audebert, Olivier Clemot
  • Patent number: 7228415
    Abstract: Session Inter-Device (SID) mobility networks (50, 100, 150) are described in which a seamless transfer of a communication session from a first device (56, 106, 116) to a second device (66, 116, 166) can be achieved without interrupting the active session. According to the SID mobility network (50), the transfer can be accomplished by transferring away from the Transferring Node or first device (56) the IP address associated with the active session (58) so that the network (50) will route the session to the desired Target Node or second device (66). The Transferring Node (56) transfers its IP address (58) to the Agent (60) and stops requesting data packets addressed to its IP address (58). The Agent (60) then begins to request and eventually receive the packets addressed to the Transferring Node's IP address (58). The Agent (60) then transfers the packets to the Target Node (66).
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: June 5, 2007
    Assignee: General Instrument Corporation
    Inventors: Jeffrey T. Eschbach, Senaka Balasuriya, Aaron M. Smith, Jie Weng, Gregory W. Cox
  • Patent number: 7228414
    Abstract: Session Inter-Device (SID) mobility networks (50, 100, 150) are described in which a seamless transfer of a communication session from a first device (56,106, 116) to a second device (66, 116, 166) can be achieved without interrupting the active session. According to the SID mobility network (50), the transfer can be accomplished by transferring away from the Transferring Node or first device (56) the IP address associated with the active session (58) so that the network (50) will route the session to the desired Target Node or second device (66). The Transferring Node (56) transfers its IP address (58) to the Agent (60) and stops requesting data packets addressed to its IP address (58). The Agent (60) then begins to request and eventually receive the packets addressed to the Transferring Node's IP address (58). The Agent (60) then transfers the packets to the Target Node (66).
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: June 5, 2007
    Assignee: General Instrument Corporation
    Inventors: Aaron M. Smith, Jeffrey T. Eschbach, Senaka Balasuriya, Jie Weng, Walter Johnson
  • Patent number: 7225465
    Abstract: A method and system for installing, activating and customizing proprietary information contained within the secure domain of a personal security device such as a smart card over a network using a communications pipe.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 29, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yves Louis Gabriel Audebert, Olivier Clemot
  • Patent number: 7225331
    Abstract: A system and method for protecting data transmitted across a private network is disclosed. A secure channel is established so that the client computer can securely transmit a password to the server computer. Once the password has been transmitted, future transmissions use the password to encrypt data by the sending computer and decipher the data at the receiving computer. In one embodiment, passwords expire after a certain amount of time and are thereafter renegotiated. In another embodiment, the password is successively modified by a counter value further preventing unauthorized persons from discovering the password used to encrypt the data. By using passwords rather than public-key encryption methods, less system resources are required to maintain data confidentiality. An information handling system securely transmitting data within a private network as well as a computer program product programmed to perform the encryption processing are further disclosed.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: May 29, 2007
    Assignee: International Business Machines Corporation
    Inventors: Gerald Francis McBrearty, Shawn Patrick Mullen, Johnny Meng-Han Shieh, Ramachandran Unnikrishnan
  • Patent number: 7216236
    Abstract: The present invention comprises a system and method for secure session management and authentication between web sites and web clients. The method includes both secure and non-secure communication protocols, means for switching between secure and non-secure communication protocols, a session cookie and an authcode cookie. The session cookie is used for session management and the authcode cookie is used for authentication. The session cookie is transmitted using a non-secure communication protocol when the web client accesses a non-secure web page, whereas, the authcode cookie is transmitted using a secure communication protocol when the web client accesses a secure web page. Session management architecture and usage of two distinct cookies along with both secure and non-secure communication protocols prevents unauthorized users from accessing sensitive web client or web site information.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: May 8, 2007
    Assignee: International Business Machines Corporation
    Inventors: Wei Dong Kou, Lev Mirlas, Yan Chun Zhao
  • Patent number: 7210037
    Abstract: One embodiment of the present invention provides a system that facilitates delegating operations involved in providing digital signatures to a signature server. The system operates by receiving a request for a digital signature from a user at the signature server, wherein the request includes an item to be signed on behalf of the user by the signature server. In response to the request, the system looks up a private key for the user at the signature server, and signs the item with the private key. Next, the system returns the signed item to the user, so that the user can send the signed item to the recipient. In one embodiment of the present invention, the system authenticates the user prior to signing the item. In one embodiment of the present invention, the system determines whether the user is authorized to sign the item prior to signing the item.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: April 24, 2007
    Assignee: Oracle International Corp.
    Inventor: Vipin Samar
  • Patent number: 7181624
    Abstract: A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: February 20, 2007
    Assignee: Sony Corporation
    Inventors: Tomoyuki Asano, Yoshitomo Osawa, Motoki Kato
  • Patent number: 7134138
    Abstract: The invention is directed to techniques for providing security in data storage systems that provide access to data by other systems, such as host computer systems. A data access manager generates access tokens that it assigns to storage locations that store data in one or more data storage assemblies in the data storage system. A host that makes a request to access specific storage locations having data must obtain an access token associated with those storage locations from the data access manager, and provide the access token with the request to the data storage system. The data storage system then authenticates the request based on the access token.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: November 7, 2006
    Assignee: EMC Corporation
    Inventor: Allan L. Scherr
  • Patent number: 7124304
    Abstract: A receiving device for securely storing a content item on a storage medium is disclosed. The content item is stored in a secure format, and has an associated license file. The license file is encrypted using public key associated with a group of playback devices, so that each playback device in the group can decrypt the license file and play the content item, but devices outside the group cannot. A playback device can provide a device-specific public key to a Content Distribution Management System (CDMS). The CDMS then returns the secret key for the group encrypted with the public key of the playback device. The playback device then securely obtains the secret key of the group and is subsequently able to decrypt the license file.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: October 17, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hendrik Jan Bel, Gerardus Cornelis Petrus Lokhoff, Michel Ronald Breugom, Dirk Valentinus Rene Engelen, Peter Van De Poel
  • Patent number: 7089592
    Abstract: The present invention provides systems and methods for dynamic detection and prevention of electronic fraud and network intrusion using an integrated set of intelligent technologies. The intelligent technologies include neural networks, multi-agents, data mining, case-based reasoning, rule-based reasoning, fuzzy logic, constraint programming, and genetic algorithms. The systems and methods of the present invention involve a fraud detection and prevention model that successfully detects and prevents electronic fraud and network intrusion in real-time. The model is not sensitive to known or unknown different types of fraud or network intrusion attacks, and can be used to detect and prevent fraud and network intrusion across multiple networks and industries.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: August 8, 2006
    Assignee: Brighterion, Inc.
    Inventor: Akli Adjaoute
  • Patent number: 7080259
    Abstract: An electronic information backup system for safely back up electronic value information about electronic money and electronic ticket through communication in a server so as to exclude unauthorized actions when backup and restoring are performed and for restoring the electronic value information from the backup in case of emergency such as loss of key information. In this system, electronic value information is encrypted, the encrypted electronic value information is registered in an electronic safe server, and the user receives the registration, presents the registration to the server to receive the encrypted electronic value information, and decrypts the electronic value information with decrypting key data. The decrypting key can be kept in another server. The electronic value information and the decrypting key can be kept separately in different servers.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: July 18, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshiaki Nakanishi, Hisashi Takayama, Tetsuo Matsuse
  • Patent number: 7062783
    Abstract: A system and associated method and computer program product are provided for providing business rule-based network services utilizing a network. Initially, information relating to a plurality of computers is collected utilizing a plurality of agents coupled to the computers via a network. Next, the information is collected from the agents utilizing a plurality of controllers coupled to the agents. Then, a plurality of business rules is identified after which various services are provided utilizing the information based on the business rules.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: June 13, 2006
    Assignee: McAfee, Inc.
    Inventor: Herbert V. Joiner
  • Patent number: 7024697
    Abstract: A gateway manages the right of a portable terminal to access data of various contents services stored in a contents server. When the gateway receives the first request for access from the portable terminal, it assigns a user ID and a password to the same and transmits them to the portable terminal. When another request for use added with the same ID and PW is received, the gateway generates access history information after authenticating the user and grants an access right during a predetermined effective period from the date of the first access. In response to an access during the effective period, contents data acquired from the contents server are transferred to the portable terminal. In the case of an access out of the effective period, the access is interrupted, and continuation of the access right is prompted by an access right continuation notice.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 4, 2006
    Assignee: NEC Corporation
    Inventor: Takashi Nitaki
  • Patent number: 7016500
    Abstract: A method of secure communication in which communication partners (A, B) in each case have a secret (S) and a public code (P), in which the communication partner (A) selects a random number (x) and the communication partner (B) selects a random number (y), in which a first partial code (Ax) is formed by the communication partner (A) and a second partial code (By) is formed by the communication partner (B) by using the public code (P) of the respective partner (B, A) and is transmitted to the respective other communication partner (B, A). A session code (gxy, gyx) is formed from the private random number (x, y), and the partial code (By, Ax) of the respective communication partner (B, A) while using the private secret code (S), the partial codes (Ax, By) and the session codes (gxy, gyx) being calculated in a fashion similar to the Diffie-Hellmann protocol.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 21, 2006
    Assignee: Rohde & Schwarz SIT GmbH
    Inventors: Guido Von Der Heidt, Joachim Velten, Peter Söhne
  • Patent number: 6870931
    Abstract: A method for embedding message data in a digital image sequence having two or more frames, includes the steps of: providing a dispersed message image representative of the message data; and adding spatially shifted versions of the dispersed message image to successive frames of the digital image sequence.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: March 22, 2005
    Assignee: Eastman Kodak Company
    Inventors: Paul W. Jones, Chris W. Honsinger, Majid Rabbani
  • Patent number: 6775381
    Abstract: A print media has a visible image and a plurality of invisible encodements comprising data printed over it in a hierarchy order, wherein the encodement of the highest order represents a replacement or edited version of the data of lower order encodements. Apparatus and methods provide effectively editing of an existing invisible encodement printed on media with a material sensitive to a first light wavelength by printing an edited or replacement encodement over it with a material sensitive to a second light wavelength of higher order in the hierarchy. Apparatus and methods also provide for selectively reading the highest order encodement, all of the encodements or selected ones of the encodements.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: August 10, 2004
    Assignee: Eastman Kodak Company
    Inventors: David J. Nelson, Kevin W. Williams, Jose A. Rosario