Electric Signal Modification Patents (Class 380/287)
  • Patent number: 9886583
    Abstract: A power fingerprinting system is adopted for assessing integrity of a target computer-based system. In one implementation, the power fingerprinting system may receive, at a first module, side-channel information of a first target component of a system, the first module being collocated with the first target component; obtain a power fingerprint for the first target component based on the side-channel information for the first target component, the power fingerprint for the first target component representing a plurality of execution statuses of the first target component; receive, at a second module, side-channel information of a second target component of the system, the second module being collocated with the second target component, the power fingerprint for the second target component representing a plurality of execution statuses of the second target component; and obtain a power fingerprint for the second target component based on the side-channel information for the second target component.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: February 6, 2018
    Assignee: Power Fingerprinting Inc.
    Inventors: Carlos R. Aguayo Gonzalez, Jeffrey H. Reed, Steven C. Chen
  • Patent number: 9817990
    Abstract: Provided are a system and method of encrypting a folder in a device. The device for controlling access to the folder includes a communication part configured to transmit, to a server, an encryption key generation request with respect to the folder, and receive, from the server, an encryption key associated with the folder that is generated in response to the encryption key generation request, wherein the encryption key generation request includes an identification of the folder and authentication data of a user who accesses the folder is an authorized user; and a controller configured to authenticate the user by using the encryption key.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jung-kyuen Lee
  • Patent number: 9788216
    Abstract: A wireless network includes a plurality of small cells. The small cells each register with the network, and an application server tracks the locations of the small cells within the network. Upon entry to the network, the small cell registers with various event packages managed by the application server. When a small cell in the network updates its configurations and/or parameters, the small cell publishes those changes to the application server. The application server determines other nearby small cells that are “interested” in those changes based on their proximity to the changed cell. The application server then notifies those proximate cells of the changes made to the changed cell so that the proximate cells can update their own configurations.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: October 10, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Kaveh Ghaboosi, Manish Vemulapalli, Jim Oates, Yuqiang Tang
  • Patent number: 9785779
    Abstract: A method and apparatus submitting information to be protected before permitting an outbound data transfer with the information is described. A DLP agent, incorporating a DLP submission tool, receives information of an outbound data transfer by the client computing system. The DLP agent can temporarily block the outbound data transfer and send a request to update a DLP policy to protect the information before permitting the outbound data transfer. The DLP agent subsequently receives receiving an indication that the DLP policy is updated to protect the information. After receiving the indication, the DLP agent permits the outbound data transfer.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: October 10, 2017
    Assignee: Symantec Corporation
    Inventors: Ajil Koshy, Milind Torney, Manish V. Pai
  • Patent number: 9198062
    Abstract: The invention relates to a method of detecting a jamming transmitter affecting a communication user equipment, wherein said communication user equipment (UE) and a number of base node stations (BNS) are components of a cellular code division multiple access (CDMA) based radio network (RN), wherein a communication signal unit (SU) is correlated with a pseudonoise spread code (SC) in a serving cell coverage area (CA) of a serving base node station (sBNS) and transmitted as a pseudonoise chip (CHI) in a multiple shared communication frequency channel spectrally located between an upper frequency and a lower frequency of a communication frequency band (FB I-XIX) and the pseudonoise spread code (SC) is received by the communication user equipment (UE) as a serving pseudonoise spread code (sSC) from said serving base node station (BNS) in a serving downlink channel (sCPICH).
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: November 24, 2015
    Assignee: GEMALTO M2M GMBH
    Inventors: Volker Breuer, Bernd Rohl
  • Patent number: 9154355
    Abstract: There are several exemplary ways to more efficiently communicate an out-of-domain seed to a receiver—in a first technique, the seed can be indicated in the header portion or data portion of a packet. For example, the header portion of the packet could contain one or more bit fields that indicate the value of the LFSR seed used for the preamble portion of the packet. The receiver would learn the out-of-domain seed after receiving a first out-of-domain packet and decoding the header portion of that packet. After learning the out-of-domain seed, the receiver could send a packet indicating the value of the out-of-domain seed to the local master. The local master could then transmit the value of the out-of-domain seed in the header portion or data portion of a local MAP frame.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: October 6, 2015
    Assignee: AWARE, INC.
    Inventors: Marcos C. Tzannes, Joon Bae Kim, Stuart Sandberg
  • Patent number: 9077334
    Abstract: A countermeasure in a logic circuit having a logic gate supplying a binary output signal, the method including supplying binary data having random values to inputs of logic circuit during a precharge phase; supplying data to process to inputs of the logic circuit during a data processing phase; supplying on input of the logic circuit a precharge command signal launching a precharge phase; and under the effect of the precharge command signal, adapting the functioning of a logic gate of the logic circuit, statistically unbalanced, so that the output signal of the logic gate is in a binary state with a same probability as the random binary data supplied on input of the logic circuit during the precharge phase.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: July 7, 2015
    Assignee: STMicroelectronics (Rousset) SAS
    Inventors: Frederic Bancel, Philippe Roquelaure
  • Patent number: 9042555
    Abstract: A request to render content associated with a first super distributed content file is detected by a content rendering device. At least one portion of the content associated with the first super distributed content file is determined to be missing from the first super distributed content file. A second file including the at least one portion of the content missing from the first super distributed content file is obtained from a server. The at least one portion of the content of the second file includes partial encrypted portions of the content associated with an encryption system of the content rendering device. A content output stream including decrypted partial encrypted portions of the content of the second file and the content associated with the first super distributed content file is generated. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: May 26, 2015
    Assignee: Sony Corporation
    Inventors: Brant L. Candelore, Stephane Lejeune
  • Patent number: 9031241
    Abstract: An approach to data communication makes use of a protocol for encoding data on a serial link that provides both a run length limiting function and a frame marking function, while minimizing communication overhead over the data bearing portions of the signal, and while limiting latency introduced into the communication. In some examples, a single bit is added as a frame marker in such a way that a single bit frame marker also limits run length.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: May 12, 2015
    Assignee: D.E. Shaw Research, LLC
    Inventors: Larry Nociolo, Brian Patrick Towles
  • Patent number: 8989392
    Abstract: A preamble portion of a physical layer (PHY) data unit is generated for transmission via a long range communication protocol. A service field is generated with a length of eight or less bits. A data portion of the PHY data unit is generated to include the service field having the length of eight bits or less.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: March 24, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Yong Liu, Raja Banerjea
  • Patent number: 8983077
    Abstract: A media storage device may store content adapted to be inserted in a media reader for reading the content. The content may be encrypted, and the media storage may include a smart object physically attached to the media storage and arranged to be read by a smart object reader of the media reader. The smart object may include security information for decrypting the content in the smart object reader.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: March 17, 2015
    Assignee: STMicroelectronics S.R.L.
    Inventor: Ubaldo Molinari
  • Patent number: 8982411
    Abstract: An image processing apparatus includes: an extractor to extract colors used in input data; a converter to convert signals of the extracted colors into intermediate color signals each including three color signal components including brightness; an evaluator to evaluate recognizabilities of the colors based on the intermediate color signals; a generator to generate additional image data to be added to data for ordinary image formation based on a result of the evaluation and the input data; and a color convertor to convert the input data into the data for ordinary image formation.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: March 17, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Seiji Miyahara, Yasunobu Shirata
  • Patent number: 8903443
    Abstract: Methods and systems for slow associated control channel signaling are disclosed. An example method for securing communications in a mobile network disclosed herein comprises transmitting a first variant of a message of a first type on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH, and after ciphering is started on the first SACCH, transmitting a second variant of the message of the first type on the first SACCH, and subsequently transmitting the second variant of the message of the first type on the first SACCH, wherein the subsequently transmitted second variant of the message of the first type is the next transmitted message of the first type on the first SACCH.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: December 2, 2014
    Assignee: BlackBerry Limited
    Inventors: David Philip Hole, Eswar Kalyan Vutukuri
  • Patent number: 8897453
    Abstract: In accordance with an example embodiment of the present invention, a first bit sequence of a first length is assigned to a first group of signaling bits. Further, a second bit sequence of a second length is assigned to a second group of signaling bits. The first bit sequence is scrambled with a first scrambling sequence, and the second bit sequence is scrambled with a second scrambling sequence different from the first scrambling sequence. A first and a second orthogonal frequency-division multiplexing (OFDM) symbol are assigned to the first and the second scrambled bit sequences respectively, and the first and second orthogonal frequency-division multiplexing (OFDM) symbols are transmitted as synchronization symbols of a data frame. Further, a corresponding method for receiving the data frame, and apparatuses for transmission and reception are disclosed.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: November 25, 2014
    Assignee: Nokia Corporation
    Inventor: Miika Tupala
  • Patent number: 8831426
    Abstract: A high data rate optical signal is inverse multiplexed into a multitude of lower-rate tributaries, each of which is coded by its unique OCDM code, and the combined coded tributaries are injected into a common phase scrambler. Coherent summation of these optically encoded tributaries pass through a shared phase or phase and frequency scrambler before exiting the secure location. The setting of the scrambler acts as the key. The authorized recipient with the correct key retrieves the ones and zeros of the several decoded signals.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: September 9, 2014
    Assignee: Telcordia Technologies, Inc.
    Inventors: Shahab Etemad, Janet Jackel, Sarry Habiby
  • Patent number: 8804958
    Abstract: A method is provided for protecting data content against illegal copying. The data content is provided by an entertainment system and is output to output units in an authorized playback environment for playing back the data content. The method includes transmitting the data content in the authorized playback environment from the entertainment system to an output unit, and adding an interference signal to the data content such that, during playback of the data content outside the authorized playback environment a disruption is induced.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: August 12, 2014
    Assignee: Siemens Convergence Creators GmbH
    Inventors: Gabriel Gudenus, Gerald Schreiber
  • Patent number: 8755529
    Abstract: A device for establishing network connection is disclosed, having a transmitting circuit, a receiving circuit, and a controller. The transmitting circuit, comprising a first scrambler having a plurality of first registers, transmits a first data scrambled by the first scrambler to a transmission line according to an oscillating signal generated by an oscillation circuit. The receiving circuit receives a second data scrambled by a second scrambler from the transmission line and comprises a descrambler having a plurality of second registers for descrambling the second data. The first and the second scramblers use the same scrambler generator polynomial. The controller compares at least one of the first data and the value of the first registers and at least one of the second data and the values of the second registers for configuring the oscillation circuit to adjust the frequency of the oscillating signal.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: June 17, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventors: Liang-Wei Huang, Cheng-Han Lee, Yi-Huei Lei, Kai-Wen Cheng
  • Patent number: 8737625
    Abstract: A receiving apparatus according to the present invention is able to normally decode reception data even when a part of an initialization symbol during training is corrupted. The receiving apparatus includes an initialization signal generation unit that generates an initialization signal, and a descrambling circuit that descrambles reception data by a descrambler initialized by the initialization signal. The reception data includes a training data set for establishing connection of high-speed serial communication, the training data set including one or more TSn ordered sets. The TSn ordered set includes one or more COM symbols and one or more pieces of data other than COM symbols. The initialization signal generation unit generates the initialization signal at an initialization last timing at which at least the last COM symbol among the COM symbols forming the last TSn ordered set included in the training data set is input to the descrambling circuit.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: May 27, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Motoshige Ikeda, Tadahiro Watanabe, Masahiro Iio
  • Patent number: 8718283
    Abstract: A method of constructing shares in a secret is disclosed. The method operates in a network comprising a number of computing devices, each arranged to securely store at least one share in the secret k for which n shares are required to reconstruct the secret and to which access to a number m of the shares can be reliably provided at any given time. The method comprises the steps of: determining n shares for an n-of-n secret sharing scheme, each share comprising a value y; storing at least some of the shares in the computing devices such that at least m of the n shares are reliably accessible; determining the shared secret k according to the shares y; determining a further (n-m) shares consistent with the shared secret k and the shares y; and storing the additional shares in a reliably accessible location.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: May 6, 2014
    Assignee: Verizon Ireland Limited
    Inventor: William Whyte
  • Patent number: 8694799
    Abstract: The invention provides a system and method for content protection. A system according to an embodiment includes a media center connectable to a mobile secure and protection keyring associated with an identifier and with a media Key block MKB. The media center includes: a unique identifier identifying the media center MC_UID, a set of device keys DK; storage means for storing files identified by respective file identifiers; and a processing unit comprising file encryption means for encrypting each file before storage in the storage means, using a title key (Kt) computed from the identifier MC_UID of the media center and for encrypting the title key Kt from the set of device keys DK of the media center, and from the identifier and the media key block MKB of the mobile secure and protection keyring, the media center being further provided to write the encrypted title key (eKt) in association with the file identifier of the file to the mobile secure and protection keyring.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: April 8, 2014
    Assignee: International Business Machines Corporation
    Inventors: Frederic Bauchot, Jean-Luc Collet, Gerard Marmigere, Christophe Mialon
  • Patent number: 8675879
    Abstract: A method of operating a User Equipment (UE) for generating a second scrambling code group where the UE is configured for receiving downlink transmission from a Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) on a set of at least two downlink carriers including an anchor carrier and at least a first secondary carrier includes: determining a first scrambling code group associated with a first cell on the anchor carrier and deriving the second scrambling code group associated with a second cell on said first secondary carrier using a predefined rule defining the relation between the second scrambling code group and the first scrambling code group.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: March 18, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Oskar Drugge, Douglas A. Cairns, Muhammad Kazmi, Andres Reial
  • Patent number: 8676878
    Abstract: A method of managing a domain, a method of extending a domain, and a method of selecting a reference point controller are provided. The method of operating the domain includes: receiving a request for authenticating a reference point controller from a reference point controller candidate; invalidating a membership of the stored reference point controller; generating a unique reference point controller membership for verifying that the reference point controller candidate is a new reference point controller; and transmitting the generated reference point controller membership to the reference point controller candidate. Accordingly, even when an error occurs in the reference point controller, the function of the reference point controller can be rapidly replaced by using the reference point controller candidate.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: March 18, 2014
    Assignee: LG Electronics Inc.
    Inventors: Man-soo Jeong, Il-gon Park, Koo-yong Pak, Min-gyu Chung, Sung-hyun Cho, Soo-jung Kim, Kiran Kumar K
  • Patent number: 8640185
    Abstract: A personal-information managing apparatus includes: a usage permission policy managing unit to manage usage permission policy in which a boundary between usage permission and usage prohibition of personal information is defined; a personal information request receiving unit to receive a request for the personal information from the personal-information handling apparatus; a usage-permission issuing unit to obtain the usage permission policy corresponding to the received request via the usage permission policy managing unit, and to issue a usage permit corresponding to the usage permission policy and the requested personal information to the personal-information handling apparatus; a usage permit issue history managing unit to manage the issued usage permit and usage permission issue history relating to the personal information; and a credibility establishing unit to establish credibility of information exchange with the personal-information handling apparatus in relation to the issuing of the usage permit and
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: January 28, 2014
    Assignee: Fujitsu Limited
    Inventor: Naoko Hayashida
  • Patent number: 8625807
    Abstract: A multi-carrier data communication is selectively operable in one of different communication modes which result in differently structured communication signals, the communication being configured for processing a data item intended to be transmitted to generate different transmission candidate data; selecting one of the transmission candidate data for transmission; selecting one of the communication modes based on the selected data item; and transmitting the selected data item using the selected communication mode.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: January 7, 2014
    Assignee: Telecom Italia S.p.A.
    Inventor: Paolo Priotti
  • Patent number: 8615087
    Abstract: In an OCDM-based photonic encryption system by applying random noise on unused channels and varying the inter-code phases on realistic framing repetition, an OCDM-based encryption system with provable security guarantees results.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: December 24, 2013
    Assignee: Telcordia Technologies, Inc.
    Inventors: Giovanni DiCrescenzo, Shahab Etemad, Ronald Menendez
  • Patent number: 8601286
    Abstract: In accordance with certain aspects, data is received and a digital signature is generated and output. The digital signature can be a digital signature of the data and one or more conditions that are to be satisfied in order for the data to be revealed, or a digital signature over data generated using a private key associated with a bound key that is bound to one or more processors.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: December 3, 2013
    Assignee: Microsoft Corporation
    Inventors: Paul England, Marcus Peinado
  • Publication number: 20130315397
    Abstract: A data storage device includes a memory and a controller. The controller is configured to scramble data using a scramble key to produce scrambled data and to encode the scramble key to produce an encoded scramble key. The controller is further configured to store the encoded scramble key and the scrambled data to the memory.
    Type: Application
    Filed: May 24, 2012
    Publication date: November 28, 2013
    Applicant: SANDISK TECHNOLOGIES INC.
    Inventors: DANIEL EDWARD TUERS, STEVEN CHENG
  • Patent number: 8594330
    Abstract: The invention prevents intercepted keys from being used in unauthorized whitebox descrambler modules for the decryption of a ciphertext. Hereto a receiver with a personalized whitebox descrambler is proposed, whereby a part of the descrambling operation of the personalized descrambler is performed in a preprocessing module external to the descrambler.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: November 26, 2013
    Assignee: Irdeto Corporate B.V.
    Inventor: Jeroen Mathias Doumen
  • Patent number: 8589692
    Abstract: A method and apparatuses for verifying Cryptographically Generated Address (CGA) signature are provided. The method includes: receiving a message sent by a CGA address owner, wherein a RSA public key, a first RSA public key signature, a second public key, and a second public key signature are carried in the message, the first RSA public key binds one or more second public keys, and a part protected by the first public key signature includes the one or more second public keys; verifying the first RSA public key signature according to the message; extracting the second public key, and verifying the second public key signature. According to the method and apparatuses of the embodiment, the effect of supporting other public key can be achieved, the change of the IP address can be omitted, and public key deployment and computing resources are saved.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: November 19, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Shuo Shen
  • Patent number: 8588426
    Abstract: Methods and apparatus to secure communications in a mobile network are disclosed. An example method disclosed herein comprises randomizing a first set of bits associated with information to be communicated over a slow associated control channel by applying a scrambling factor to generate a set of scrambled bits equal in length to the first set of bits. Another example method disclosed herein comprises concatenating a set of error detection bits with a set of information bits associated with information to be transmitted over a slow associated control channel to generate a set of coded bits, and shuffling the set of coded bits to generate a set of shuffled bits.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: November 19, 2013
    Assignee: BlackBerry Limited
    Inventors: Yan Xin, Shouxing Qu
  • Patent number: 8582595
    Abstract: The present invention relates to a system and a method for transmitting data between a first terminal and a communication network access point. The method may comprise the steps of defining a first set of scrambling codes and a second set of scrambling codes different from the first set of scrambling codes. Further, the method may comprise defining a first selection scheme for a first parameter. The method may still further comprise determining a current parameter value for the first parameter and evaluating the current parameter value on the basis of the first selection scheme and selecting a scrambling code from the first set of scrambling codes or the second set of scrambling codes based on the evaluation. Even further, the method may comprise packaging and transmitting data between the first terminal and the communication network access point using the selected scrambling codes.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 12, 2013
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Christer Edholm, Bo Göransson
  • Patent number: 8565439
    Abstract: A method is provided for detecting scrambling of a radiocommunication network. The method is applied by a radiocommunication circuit capable of being connected to the network by being synchronized on a radiocommunication channel. The method includes a final detection phase, having the following steps: detection of verification of the following final condition: there are N radiocommunication channels on which the radiocommunication circuit cannot be synchronized despite detection of a power level normally sufficient for being synchronized, where N>2; and if the final condition is verified, generation of a final scrambling signal with a probability of scrambling equal to 100%. The method also includes at least one intermediate detection phase, having the following steps: detection of verification of at least one intermediate condition; and if the at least one intermediate condition is verified, generation of an intermediate scrambling signal with a probability of scrambling of less than 100%.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: October 22, 2013
    Assignee: Sierra Wireless
    Inventors: Erwan Girard, Christophe Flechelle, Thierry Lys
  • Publication number: 20130236020
    Abstract: A media storage device may store content adapted to be inserted in a media reader for reading the content. The content may be encrypted, and the media storage may include a smart object physically attached to the media storage and arranged to be read by a smart object reader of the media reader. The smart object may include security information for decrypting the content in the smart object reader.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 12, 2013
    Applicant: STMicroelectronics S.R.L.
    Inventor: Ubaldo Molinari
  • Patent number: 8527752
    Abstract: A method and system for graduated security in an identity management system utilize differing levels of time sensitivity, channel security and authentication security to provide a multi-dimensional approach to providing the right fit for differing identity requests. The differing levels of security can be selected by user preference, membersite request or homesite policy.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: September 3, 2013
    Assignee: Dormarke Assets Limited Liability
    Inventor: Dick C. Hardt
  • Patent number: 8520852
    Abstract: A method includes: receiving a plurality of audio frames, assembling groups of the audio frames into logical recording units, storing a plurality of the logical recording units, retrieving the stored logical recording units, and decoding the retrieved logical recording units. An apparatus that performs the method is also provided.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 27, 2013
    Assignee: iBiquity Digital Corporation
    Inventors: Chinmay Shah, Ashwini Pahuja, Nandu Parimi
  • Publication number: 20130202112
    Abstract: An example method includes encapsulating, by an optical network device, at least a portion of a data packet to form a passive optical network (PON) frame. The method further includes applying, by the optical network device, a scrambling polynomial to at least a portion of the PON frame to generate a scrambled PON frame. The method further includes determining, by the optical network device, that the scrambled PON frame comprises a consecutive identical digit (CID) sequence greater than a threshold length. The method further includes replacing, by the optical network device the determined CID sequence with a correction pattern to generate a modified scrambled PON frame. The method further includes transmitting, by the optical network device, the modified scrambled PON frame.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 8, 2013
    Applicant: CALIX, INC.
    Inventors: Christopher T. Bernard, Charles J. Eddleston
  • Publication number: 20130202113
    Abstract: In general, techniques are described for protecting optical networks from consecutive identical digit (CID) errors. An optical network device comprising a control unit and an interface may implement the techniques described in this disclosure. The control unit determines whether a data packet will result in a CID error prior to encapsulating at least a portion of the data packet to form a passive optical network (PON) frame and then, in response to the determination that the data packet will result in the CID error, modifies the data packet to form a modified data packet so that the modified data packet will not result in the CID error. The control unit encapsulates the modified data packet to form a PON frame. The control unit applies a scrambling polynomial to the PON frame to form a scrambled PON frame. The interface transmits the scrambled PON frame.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 8, 2013
    Applicant: CALIX, INC.
    Inventors: Christopher T. Bernard, Charles J. Eddleston
  • Publication number: 20130195275
    Abstract: A resource allocation for a specific user equipment (UE) is encoded using an encoding scheme that identifies a specific antenna port from among a plurality of antenna ports; and the encoded resource allocation is output to the specific antenna port for transmission to the specific UE. The UE blindly detects its control channel and determines its resource allocation by decoding the control channel using a decoding scheme that identifies a specific antenna port from among the plurality of transmit antenna ports. In various embodiments, the scheme is in scrambling or masking (using an ID of the antenna port or UE); by the order of bits when encoding, port specific mapping constellations, and adding bits that give the port index.
    Type: Application
    Filed: March 27, 2012
    Publication date: August 1, 2013
    Inventors: Tommi T. KOIVISTO, Tero Kuosmanen, Timo E. Roman
  • Patent number: 8488837
    Abstract: An apparatus and a method for generating a constructively multi-patterned watermark, an apparatus and a method for inserting and detecting the watermark using the same. The method includes dividing user's hidden data into plural partial data and outputs the plural partial data, performing a message-encoding of the plural partial data, modulating the plural message-encoded data into image signal format and outputting plural message signals, generating a synchronization signal for synchronizing the constructively multi-patterned watermark with a two-dimensional translation of an image, generating, plural sub-base patterns using the plurality of message signals modulated into the image signal format, and the synchronization signal, and generating a base watermark that is the constructively multi-patterned watermark, using the plural sub-base patterns.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: July 16, 2013
    Assignee: CK&B Co., Ltd.
    Inventors: Ki-Hyeok Bae, Hyun-Tae Kim, In-Je Cho
  • Patent number: 8478526
    Abstract: A method is described that allows a first mobile device to persistently lock onto a second mobile device, thereby allowing the first mobile device to not only constantly monitor the dynamic location of the second mobile device but also to adaptively navigate in real-time to the dynamic location associated with the second mobile device. The dynamic location may include a current location of the second mobile device or a final destination for travel of the second mobile device.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: July 2, 2013
    Assignee: Cellco Partnership
    Inventors: Monica Chitre, Deepa Sukumaran
  • Patent number: 8457919
    Abstract: A process for testing an integrated circuit includes collecting a set of points of a physical property while the integrated circuit is executing a multiplication, dividing the set of points into a plurality subsets of lateral points, calculating an estimation of the value of the physical property for each subset, and applying to the subset of lateral points a step of horizontal transversal statistical processing by using the estimations of the value of the physical property, to verify a hypothesis about the variables manipulated by the integrated circuit.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 4, 2013
    Assignee: Inside Secure
    Inventors: Benoit Feix, Georges Gagnerot, Mylene Roussellet, Vincent Verneuil
  • Patent number: 8452005
    Abstract: Unicode character data is received for transcoding. The Unicode character data is transcoded to an intermediate value. The intermediate value is enciphered. The enciphered intermediate value is transcoded back to Unicode-compatible character data. The transcoding includes assembling character values from the Unicode character data into one or more blocks and representing the assembled character values in a compact form.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: May 28, 2013
    Assignee: Red Hat, Inc.
    Inventor: James Paul Schneider
  • Patent number: 8452009
    Abstract: A method for processing a set of control messages used to access an encrypted stream by a multimedia unit. These messages include a discrimination parameter having a different value for at least three consecutive non-redundant messages in the stream. The method includes the steps of receiving a current control message; reading the discrimination parameter from the current control message; retrieving from a memory the discrimination parameter from the message processed previously; comparing the current and previous discrimination parameters; and blocking said current control message if the comparison step indicates that the discrimination parameters are identical. The method is characterized in that the discrimination parameter is unique and different for each message in the set of control messages, such that, during the filtering step, the current message and the previously processed message can be non-consecutive in the ordered subset of messages.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: May 28, 2013
    Assignee: Nagra France SAS
    Inventor: Antoine Burckard
  • Patent number: 8428266
    Abstract: A method and terminal for implementing hot-plug of a smart card are disclosed. The method includes: during the process of playing mobile multimedia, a descrambling library sending request information for obtaining a program key to a smart card driving module, which judges whether a smart card is in a plug-in state or a pull-out state after receiving the request information: if in the plug-in state, the smart card driving module forwarding the request information to the smart card, receiving response information returned by the smart card, forwarding the response information to the descrambling library, and meanwhile forwarding the response information to a virtual smart card module to save; if in the pull-out state, the smart card driving module forwarding the request information to the virtual smart card module, which returns the saved response information to the smart card driving module, which forwards the response information to the descrambling library.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: April 23, 2013
    Assignee: ZTE Corporation
    Inventors: Chengzhi Jiang, Weimei Yin, Chuanhui Wang
  • Patent number: 8406459
    Abstract: Guilloches (preventing modification) and watermarking (preventing substitution) technologies are combined to protect a medium, such as a card or a passport. The major idea stems from their dual role for medium authentication: the presence of one is needed to check the validity of the other one. By nature, the guilloche network is visible in the image and easily detectable by image processing. This network is therefore used to generate reference points as elements of synchronization to retrieve watermark information originally embedded in the medium that has submitted an RST transformation. These reference points are by nature stronger than any other means involving invisible templates in the spatial or Fourier space.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: March 26, 2013
    Assignees: Gemalto SA, Gemalto Oy
    Inventors: Frederic Ros, Christophe Mourtel, Teemu Pohjola
  • Publication number: 20130064368
    Abstract: Selective data encryption of a file, in particular an H.264/MPEG-4 AVC data stream. If a first unit in the data stream is to be encrypted, it is encrypted and the encryption is put into a further unit, preferably in the data stream. A substitution unit is generated and put in the place of the first unit; if necessary, at least one header value is taken from the first unit for use in the substitution unit. A decryptor receives the encrypted data stream, extracts and decrypts the further unit and replaces the substitution unit with a regenerated first unit.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 14, 2013
    Inventors: Frédéric Lefebvre, Séverine Baudry, Antoine Robert, Philippe Roudot
  • Patent number: 8379861
    Abstract: An integrated circuit that includes a controller and multiple internal circuitries, whereas the integrated circuit is characterized by further including a security mode determination unit that includes multiple one time programmable components for defining a security mode out of multiple possible security modes, whereas a selected circuitry mode affects access to an internal circuitry. A method for testing an integrated circuit, the method includes: receiving a request to access an internal circuitry; and responding to the request in view of a defined security mode; whereas the method is characterized by a stage of defining a security mode of a debug circuit out of multiple security modes, whereas the definition is responsive to at least a state of multiple one time programmable components.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: February 19, 2013
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Dimitri Akselrod, Yossi Amon, Asaf Ashkenazi
  • Patent number: 8365243
    Abstract: Prevention of sensitive images such as photographs and video clips from being leaked from an organization uses geo-tagging metadata. A mobile computing device includes a software agent that implements a data loss prevention policy and a database of sensitive geographic areas defined by latitude and longitude coordinates. When an image is attempted to be stored on the device (or sent, received, renamed, copied, etc.) a software hook module detects the operation and obtains the geo-tagging metadata from the image for the agent. The agent compares the metadata of the image with each sensitive area found in its database to determine if the image was taken at a location within a sensitive area. If not, the operation is allowed, if so, the operation may be blocked, restricted or a warning may be sent to the user of the device or to another computer within the organization.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: January 29, 2013
    Assignee: Trend Micro, Inc.
    Inventors: Minggang Lu, Pei Zhang, Jing Li, Wen Zhu
  • Publication number: 20130016841
    Abstract: Methods, devices, and systems for multi-carrier network operation are disclosed. In one embodiment, a method of performing channel scrambling in a multi-carrier network, wherein the multi-carrier network includes a first component carrier (“CC”) and a second CC between a base station and a user equipment (“UE”) comprises receiving a Cell Radio Network Temporary Identifier (“C-RNTI”) and a cell identification (“ID”) for at least one of the first CC and the second CC; and using the RNTI and the cell ID to perform scrambling of information transmitted on at least one of the first CC and the second CC.
    Type: Application
    Filed: September 24, 2010
    Publication date: January 17, 2013
    Inventors: Mo-han Fong, Youn Hyoung Heo, Hua Xu, Jun Li, Sean Michael McBeath
  • Patent number: 8355505
    Abstract: The camera includes a sensor for sensing the photographer's iris image and registering the image in advance. The iris image is recorded in the image of a subject by a digital MCU at a timing different from that at which the image of the subject is captured. The recording timing is that at which the camera power supply is turned off, that at which a recording medium is ejected from the camera or that at which the iris image to be recorded is changed to changed to the registered iris image of another photographer. The recording of the iris image is achieved by embedding it as a watermark or by appending it to metadata.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: January 15, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Goichi Morikawa, Go Tokura