Having Compression (e.g., Mpeg) Patents (Class 380/217)
  • Patent number: 10701404
    Abstract: Real-time forward reshaping, comprising selecting a statistical sliding window that indexes with the current frame, having also, a look-back frame and a look-ahead frame, determining whether they are part of the current scene, determining a noise parameter, a luma transfer function and a luma forward reshaping function based on the luma transfer function and the noise parameter within the current scene, selecting a central tendency sliding window of the current frame and the look-back frame within the current scene, and determining a central tendency luma forward reshaping function. The chroma reshaping comprises analyzing statistics for the extended dynamic range (EDR) weights and EDR upper bounds, mapping these to standard dynamic range (SDR) weights and SDR upper bounds based on the central tendency luma forward reshaping function, determining a chroma content-dependent polynomial and a central tendency chroma forward reshaping polynomial and generating chroma MMR coefficients.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: June 30, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Qing Song, Harshad Kadu, Qian Chen, Guan-Ming Su
  • Patent number: 10574730
    Abstract: A streaming media resource downloading method includes: determining that a first media file is a to-be-downloaded media file according to first network bandwidth, where the first media file is included in a streaming media resource corresponding to the first network bandwidth, and the first media file includes N data blocks; and after an (n?1)th data block in the first media file is downloaded, and before an nth data block in the first media file is downloaded, determining a length of the to-be-downloaded nth data block according to network bandwidth reduction times in an executed first media file downloading process, where 1?n?N. Therefore, a length of a to-be-downloaded data block is adjusted according to the network bandwidth reduction times in the first media file downloading process so that video playing can better adapt to a bandwidth change, and streaming media resource switching times are reduced.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: February 25, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Cheng Chen, Wei Dong
  • Patent number: 10503930
    Abstract: Embodiments of the present application provide an NDM file protection method and apparatus. The method includes: a sending device generates integrity information of an NDM file, and sends the NDM file and the integrity information of the NDM file to a receiving device, so that the receiving device verifies, according to the integrity information, whether the NDM file is tampered with.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: December 10, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Dacheng Zhang
  • Patent number: 10439994
    Abstract: The present disclosure relates to a 5th-Generation (5G) or pre-5G communication system to be provided to support a higher data rate than a 4th-Generation (4G) communication system like Long Term Evolution (LTE). The present invention provides a method for encrypting a multimedia content comprising: encrypting multimedia contents including a plurality of variants and a plurality of samples; and transmitting the encrypted multimedia contents, wherein the plurality of variants correspond to the samples included in the multimedia contents, respectively, and are configured with reference to a predetermined number of samples, and each of the plurality of variants is configured with reference to a combination of different samples.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: October 8, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Ryeul Rhyu, Eric Yip
  • Patent number: 10237248
    Abstract: A method of encoding and encrypting input data (D1) to generate corresponding encoded and encrypted data (E2) is provided. At least a first data block of the input data (D1) is encoded to generate a first encoded data block. The at least first encoded data block is then encrypted using at least one key to provide a first encoded and encrypted data block for inclusion in the encoded and encrypted data (E2). Moreover, a first seed value is generated for use in encrypting a next encoded data block to provide a next encoded and encrypted data block for inclusion in the encoded and encrypted data (E2). Furthermore, a next seed value is generated for use in encrypting a subsequent encoded data block, in a sequential repetitive manner until each data block of the input data (D1) is encoded and encrypted into the encoded and encrypted data (E2).
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 19, 2019
    Assignee: GURULOGIC MICROSYSTEMS OY
    Inventor: Tuomas Kärkkäinen
  • Patent number: 10229130
    Abstract: A computer program for managing and manipulating archive zip files of a computer. The program includes a system and method for opening, creating, and modifying, and extracting zip archive files. The program is fully integrated into Microsoft Windows Explorer and is accessed via Explorer menus, toolbars, and/or drag and drop operations. An important feature of the program is the archive manager which may be used to open a zip file, create a new zip file, extract zip files, modify zip files, etc. The program is integrated into Microsoft Windows Explorer using the shell name space extension application program interface developed by Microsoft.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: March 12, 2019
    Assignee: PKWARE, Inc.
    Inventors: Yuri Basin, Michael J Beirne, James C Peterson, Karen L Peterson
  • Patent number: 10095843
    Abstract: Systems and methods for payload encoding and decoding are disclosed. An example method to decode audio data includes receiving audio data having protected information embedded in the audio data; receiving a license file containing a first portion of a set of information required to access the protected information embedded in the audio data; processing the license file to obtain at least one of decoding information, message codes, a decoding algorithm or diagnostic information; producing a stream of symbol values for each code symbol included in the received audio signal; accumulating the stream of symbol values in a storage device; detecting the presence of an encoded message; outputting the detected message.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: October 9, 2018
    Assignee: The Nielsen Company (US), LLC
    Inventors: Wendell Lynch, Ronald D. Smith
  • Patent number: 9727743
    Abstract: A database access system may protect a field by storing the field as one or more underlying fields within a database. The database engine may not have access to keys used to protect the underlying fields within the database, such as by encryption, while the database access system may have access to the keys. Underlying fields may be used to store protected data and aid in the querying of protected data. The database access system may modify queries to use the underlying fields, which may include encrypting query terms and/or modifying query terms to fit the use of the underlying fields. The database access system may modify query results to match the format of the original query, which may include decrypting protected results and/or removing underlying fields.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: August 8, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Gregory B. Roth, Nathan R. Fitch, Bradley Jeffery Behm, Patrick J. Ward, Graeme D. Baer, Eric Jason Brandwine
  • Patent number: 9665698
    Abstract: Systems and methods for payload encoding and decoding are disclosed. An example method to decode audio data includes receiving audio data having protected information embedded in the audio data; receiving a license file containing a first portion of a set of information required to access the protected information embedded in the audio data; processing the license file to obtain at least one of decoding information, message codes, a decoding algorithm or diagnostic information; producing a stream of symbol values for each code symbol included in the received audio signal; accumulating the stream of symbol values in a storage device; detecting the presence of an encoded message; outputting the detected message.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: May 30, 2017
    Assignee: The Nielsen Company (US), LLC
    Inventors: Wendell Lynch, Ronald D. Smith
  • Patent number: 9514330
    Abstract: The invention described herein generally relates to systems and methods of securely storing data so that the data contains information about the data and/or the encryption of the data, systems and methods of providing secure access to real world data through data transformations, and systems and methods of managing security parameters for data.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: December 6, 2016
    Assignee: Protegrity Corporation
    Inventor: Ulf Mattsson
  • Patent number: 9445095
    Abstract: Various methods, systems, and apparatuses can be used to remove uninteresting data from captured data prior to transmission of the captured data for analysis. In some implementations, a compression module is operable to modify capture data by replacing encrypted content with tags, and to compress the resulting modified data using various compression algorithms.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: September 13, 2016
    Assignee: ARRIS Enterprises, Inc.
    Inventor: Ian G. Wheelock
  • Patent number: 9390703
    Abstract: Whereas a high masking effect can be secured in a space to which a masking sound is emitted, the degree of a discomfort a person existing in the space suffers can be reduced. In superimposition processing, a CPU 21 extracts sound signals in different intervals of a sound signal X12-n of a human voice, superimposes the extracted sound signals on each other on the time axis, and outputs a resulting superimposed sound signal X13-n. In shift and addition processing, the CPU 12 interchanges a sound signal, before a reference position, of a sound signal X16-n and a sound signal, after the reference position, of the sound signal X16-n (shift processing) and outputs a sound signal X17-n obtained by adding together a shift-processed sound signal X16?-n and the original, non-shift-processed sound signal X16-n.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: July 12, 2016
    Assignee: Yamaha Corporation
    Inventors: Takashi Yamakawa, Mai Koike, Masato Hata, Yasushi Shimizu
  • Patent number: 9338490
    Abstract: A method includes receiving a request for media content at a residential gateway from a device coupled to the residential gateway and sending a media content request to a server based on the request. The method includes receiving a video data stream of the media content at the residential gateway. Data packets of the video data stream enable generation of the media content at a first resolution. A first subset of the data packets include tags that enable identification of particular data packets usable to generate the media content at a second resolution that is lower than the first resolution. The method also includes determining a display characteristic of a display device coupled to the device and sending the particular data packets to the device when the display characteristic indicates that the device is to receive the media content at the second resolution.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: May 10, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Ahmad C. Ansari, Dinesh Nadarajah, David Bruce Hartman
  • Patent number: 9258335
    Abstract: A connection-aggregation proxy service disclosed in various embodiments receives connection requests from a plurality of local initiating services, where the connection requests are not targeted at the connection-aggregation proxy service. The connection-aggregation proxy service establishes connections with the local initiating services, receives packets over those connections, and transmits the packets across the same connection when the packets are for the same external target. A local connection-aggregation proxy service in one example executes on the same physical computing device as the local initiating services. A gateway connection-aggregation proxy service in another example resides at a network edge between the local initiating services and the external target that the network local initiating services are requesting.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: February 9, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Brett R. Taylor, Samuel J. Young, Ranganath Atreya, Peter F. Hill, Ameet N. Vaswani, David A. Killian, Ivan King Yu Sham
  • Patent number: 9197712
    Abstract: A method includes receiving, at a first level distribution node of a plurality of first level distribution nodes of a hierarchical media distribution system (HMDS), a request for a content item (associated with segments corresponding to a time order) from a first endpoint device. The method includes, in response to receiving the request, sending, from the first level distribution node, a first data stream corresponding to a first segment of the content item to the first endpoint device and sending first information (indicating the request and a first end time of the first data stream) to a second level distribution node of a plurality of second level distribution nodes of the HMDS. The method includes receiving, from the second level distribution node, a second data stream corresponding to a second segment before the first end time has been reached and sending the second data stream to the first endpoint device.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: November 24, 2015
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., THE UNIVERSITY OF MELBOURNE
    Inventors: Vijay Gopalakrishnan, Chamil Jayasundara
  • Patent number: 9185081
    Abstract: Techniques are disclosed for encrypting application data files using a format-friendly encryption process. A software agent may create an encrypted version of an application file using the same data file format of the unencrypted file. For example, when a user encrypts a word processing document, the software agent outputs a word processing document which includes an encrypted copy of the first word processing document. Application data files for other file formats may be encrypted in a similar manner. Further, format-friendly encrypted documents may include instructions for accessing the encrypted content, allowing the standard applications for accessing a given file format to present the instructions to a user. Creating encrypted document using the format-friendly encryption formats allows users who access an encrypted file hosted by a cloud storage provider to receive the information needed to access that application file.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: November 10, 2015
    Assignee: SYMANTEC CORPORATION
    Inventors: Michael Allen, Yuancong Zhao
  • Patent number: 9165599
    Abstract: A method includes: writing data in a magnetic recording system using a write channel of the magnetic recording system; processing output data of the write channel in accordance with a read channel of the magnetic recording system to measure baseline wander; and triggering re-writing through the write channel using different data scramblings when the measured baseline wander fails to satisfy a criterion. The processing can include modeling the read channel of the magnetic recording system, modeling one or more high pass filtering circuits of the magnetic recording system, or both. The writing can include encoding the data after scrambling of the data, the processing can include using a discrete time model of DC offset in the magnetic recording system, and the triggering can include triggering re-writing through the write channel using different scrambling seeds when the measured baseline wander fails to exceed a threshold.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: October 20, 2015
    Assignee: Marvell International Ltd.
    Inventors: Mats Oberg, Pantas Sutardja
  • Patent number: 9161030
    Abstract: Systems and methods for providing compressed video with layered graphics to at least one screen are described herein. An On Screen Display (OSD) system receives a command from a remote set top box coupled to a screen. The command instructs the OSD system to process the input video stream according to various processing functions including layering at least one graphics plane on top of the video stream. The OSD system processes the input video stream to generate an output video stream with the layered graphics planes and outputs, in a compressed format, the output video stream to the screen. The system advantageously provides a central OSD processing unit that can output video with layered graphics in a compressed format to multiple displays.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: October 13, 2015
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Anthony D. Masterson, Amir M. Mobini
  • Patent number: 9112816
    Abstract: In one example, an Edge Quadrature Amplitude Modulation (EQAM) communicates EQAM information to a Modular Cable Modem Termination System (M-CMTS) core using a routing protocol that is configured on a packet switched network coupling the EQAM to the M-CMTS core. The EQAM generates a routing message according to the routing protocol and inserts EQAM information, such as a description of a modulated channel extending from the EQAM, the service-group information, etc., into the routing message. The EQAM then floods the EQAM information over at least portions of a routing domain by transmitting the routing message to an adjacent intermediary device.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: August 18, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Rajiv Asati, John Chapman, Mohamed Khalid
  • 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: 9014374
    Abstract: In one aspect, a method includes: obtaining compressed video content within a video content processing module, a portion of a document structure of the compressed video content conforming to a predefined codec, the portion of the document structure including a plurality of video frames; decrypting the compressed video content in accordance with a digital rights management data encryption applied to the compressed video content; adding information in an extension frame associated with a portion of the document structure; and applying an encoding technique to content of one or more of the plurality of video frames after the decrypting, wherein the extension frame flags the applied encoding technique; and providing the compressed video content, including the encoded content, to a media player including a codec conforming to the predefined codec.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: April 21, 2015
    Assignee: Adobe Systems Incorporated
    Inventors: Roderick David Schultz, Tinic Uro
  • Patent number: 9008308
    Abstract: A video processing device for decrypting a compressed video signal includes a key storage device for storing at least one decryption key. A decryption processing device retrieves the at least one decryption key from the key storage device, and decrypts an encrypted elementary bit stream into at least one elementary bit stream, wherein first portions of the encrypted elementary bit stream are encrypted and second portions of the encrypted elementary bit stream are unencrypted.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: April 14, 2015
    Assignee: VIXS Systems, Inc
    Inventor: Paul D. Ducharme
  • Patent number: 8966261
    Abstract: The present invention is directed to an architecture and mechanism for securely backing up files and directories on a local machine onto untrusted servers over an insecure network.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: February 24, 2015
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Aviel D. Rubin
  • Patent number: 8964978
    Abstract: Provided are a method and apparatus for effectively fixing scrambled content. The method includes checking fixing information for a program map table (PMT) packet of packets constituting the content, the fixing information being used to fix a transformed part of the content; extracting location information of a next PMT packet containing fixing data for fixing the transformed part of the content from the fixing information of the PMT packet; and fixing the transformed part of the content by using the fixing data in the next PMT packet indicated by the extracted location information. Accordingly, it is possible to easily detect a location of the content, which stores the fixing information, thereby expediting fixing of the transformed content.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-kuk You, Hyun-kwon Chung, Jun-bum Shin, Yun-ho Choi, Su-hyun Nam
  • Patent number: 8948384
    Abstract: The present invention relates to an image encrypting/decrypting system and method devised in such a way that: a transmitter and a receiver for transmitting and receiving moving images share a seed for encrypting and decrypting the moving images; the transmitter transmits moving images after encrypting the moving images by dividing them into segment units and mixing the time sequencing of the images in each of the segments in accordance with a random number generated by means of the seed; and the receiver decrypts the moving images which it receives, by sorting them in segment units and then restoring the time sequencing of the images in each of the segments in accordance with the random number generated by means of the seed.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: February 3, 2015
    Assignee: SK Planet Co., Ltd.
    Inventor: Tae Meon Bae
  • Patent number: 8885823
    Abstract: A method for delivering encrypted content to a subscriber terminal on-demand through a communication network is provided. The method begins when SRM receives a request for content from the subscriber terminal. In response to the request, the SRM directs a video server to transmit the content as an unencrypted transport stream to an encryptor. The packets in the unencrypted transport stream include a header with a destination address associated with the subscriber terminal. The encryptor encrypts the content in the unencrypted transport stream to generate an encrypted transport stream. The encryptor also inserts in the packet headers of the packets in the encrypted transport stream the destination address associated with the subscriber terminal obtained from the packet headers in the unencrypted transport stream. Finally, the encrypted transport stream is transmitted to the subscriber terminal over the communication network.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: November 11, 2014
    Assignee: General Instrument Corporation
    Inventors: Christopher Poli, Joseph M. Amorese, Robert Mack, Lawrence D. Vince, Charles A. Zimmerman
  • Patent number: 8868788
    Abstract: A method includes receiving a registration request including a first dictionary definition. The registration request is associated with user equipment. The method includes transmitting to the user equipment a response including a second dictionary definition. The method includes transmitting subsequent messages to the user equipment if the first and second dictionary definitions agree, the subsequent messages being compressed using the first static dictionary.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: October 21, 2014
    Assignee: AT&T Mobility II LLC
    Inventors: Matthew Stafford, Kennie Y. Kwong, Mark S. Wuthnow, William Rosenberg
  • Patent number: 8850498
    Abstract: A system and method for distributing digital video contents that provides the content owner, service provider, video distributors and consumers with a method for secure delivery of digital media content by encryption using a portable digital video storage and distribution device that includes a decoder and, wired, USB and HDMI wireless interfaces to transmit digital contents for viewing on a television, laptop/personal computer or other portable viewing devices. The system consists of a remote content-distribution management platform that provides end-to-end protection and a portable digital video storage and distribution device using broadband wireless technologies such as 802.11n and ultra wideband (UWB).
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: September 30, 2014
    Assignee: Collideo LLC
    Inventors: Wayne C. Roach, Gil R. Pascal
  • Patent number: 8819452
    Abstract: A method begins with a processing module obtaining data to store and determining whether substantially similar data to the data is stored. When the substantially similar data is not stored, the method continues with the processing module generating a first encryption key based on the data, encoding the first encryption key into encoded data slices in accordance with an error coding dispersal storage function, and storing the encoded data slices in a dispersed storage network (DSN) memory. The method continues with the processing module encrypting the data using an encryption key of the substantially similar data in accordance with an encryption function to produce encrypted data, compressing the encrypted data in accordance with a compression function to produce compressed data, storing the compressed data when the substantially similar data is stored.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: August 26, 2014
    Assignee: Cleversafe, Inc.
    Inventors: S. Christopher Gladwin, Kumar Abhijeet, Greg Dhuse, Jason K. Resch, Gary W. Grube, Timothy W. Markison
  • Patent number: 8806052
    Abstract: A customer-premises equipment (CPE) gateway and methods for operation thereof, and a multimedia server and methods for operation thereof are disclosed. The method for the CPE gateway including: (a) receiving, by the CPE gateway, a first internet group management protocol (IGMP) compliant command; (b) generating by the CPE gateway, in response to the first IGMP compliant command, a unicast command that instructs a multimedia server to generate a unicast media stream; wherein the generating including concealing multicast information from at least one IGMP compliant entity that follows the CPE gateway; and (c) transmitting, by the CPE gateway, the unicast command to the at least one IGMP compliant entity; wherein the unicast command passes through the at least one IGMP compliant entity and reaches the multimedia server.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: August 12, 2014
    Assignee: ARRIS Solutions, Inc.
    Inventor: John Reister
  • Patent number: 8775658
    Abstract: A communication apparatus for remote communication may include a local communication proxy module configured to receive streams from a local communication application module. The streams may be in a form utilizing a first transmission protocol and destined to a remote destination. The local communication proxy module may be configured to facilitate sending, utilizing a second transmission protocol, the streams in real-time over a network to a remote communication proxy module. The local communication proxy module may be configured to conceal characteristics of the network from the local communication application module. The local communication proxy module may also be configured to be transparent to the local communication application module. A machine-readable medium and a method are also disclosed.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: July 8, 2014
    Assignee: Wyse Technology L.L.C.
    Inventors: Daniel Ernesto Barreto, Siddhartha Kasivajhula, Ankur Kumar
  • Patent number: 8755524
    Abstract: A method of encrypting a motion picture file and a method of digital rights management using the same, wherein encryption method includes: extracting information on the location of at least one video sample, which is a real-time streaming unit, from meta-data of the motion picture file; extracting the video samples based on the location information; encrypting the extracted video samples, excluding a start code within a video sample header of each extracted video sample, based on predetermined encryption information; and producing an encrypted motion picture file by recombining the encrypted video samples. Since the file is encrypted in units of video object planes (VOPs) while maintaining an MEPG-4 file format, the encryption method can be easily applied to a completed file format and streaming service is also possible.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: June 17, 2014
    Assignees: Samsung Electronics Co., Ltd., Sejong Industry-Academy Cooperation Foundation
    Inventors: Dong-kyoo Shin, Jun-il Kim, Dong-il Shin, Yong-bin Kim, Soon-yong Choi
  • Patent number: 8755523
    Abstract: A method for protecting digital content is described. The method includes receiving compressed encrypted digital content, determining an output format based, at least in part, on all of the following: a user-requested output format; received control information; and a rule determining whether a clear compressed output format is allowedand producing output from the compressed digital content based on a result of the determining, wherein, if the rule does not allow clear compressed output format, the compressed encrypted digital content is provided in a form which prevents production of clear compressed output in the producing step. Related apparatus and methods are also described.
    Type: Grant
    Filed: November 16, 2003
    Date of Patent: June 17, 2014
    Assignee: Cisco Technology Inc.
    Inventors: Josh Kamins, Stephanie Wald, Yaacov Belenky, Carmi Bogot, Gabi Ickowicz, Uri Stroh, Abraham Wachtfogel
  • Patent number: 8737613
    Abstract: One scanning method of transform-based digital data processing includes: when processing data blocks, recording characteristics information for different block categories individually; conditionally adjusting scan orders of data processing of the block categories according to the characteristics information; and performing the data processing upon a current data block according to a scan order corresponding to a block category to which the current data block belongs. Another scanning method of transform-based digital data processing includes: recording characteristics information when processing data blocks; conditionally adjusting a scan order according to the characteristics information; keeping at least one position in the scan order fixed regardless of changes made to the scan order; and performing a data processing upon a current data block according to the scan order.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: May 27, 2014
    Assignee: Mediatek Inc.
    Inventors: Kun-Bin Lee, Shaw-Min Lei
  • Patent number: 8731190
    Abstract: A system for storing encrypted compressed data comprises a processor and a memory. The processor is configured to determine whether an encrypted compressed segment has been previously stored. The encrypted compressed segment was determined by breaking a data stream, a data block, or a data file into one or more segments and compressing and then encrypting each of the one or more segments. The processor is further configured to store the encrypted compressed segment in the event that the encrypted compressed segment has not been previously stored. The memory is coupled to the processor and configured to provide the processor with instructions.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: May 20, 2014
    Assignee: EMC Corporation
    Inventor: Christopher R. Lumb
  • Patent number: 8731192
    Abstract: A data generating is device capable of preventing unauthorized extraction of plaintext content between decryption processing and digital watermark embedment processing. A content reproducing device obtains restoration information and, in accordance with the restoration information, selectively performs predetermined restoration processing and processing of embedding device unique information, on content data at a position shown by the restoration information.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 20, 2014
    Assignee: Panasonic Corporation
    Inventors: Masaya Yamamoto, Senichi Onoda, Minehisa Nagata, Kaoru Murase
  • Patent number: 8681872
    Abstract: Provided is a video coding method and a video decoding method increasing the resolution and quality of images while suppressing an amount of data required for increasing the resolution.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: March 25, 2014
    Assignee: Panasonic Corporation
    Inventors: Hisao Sasai, Satoshi Kondo
  • Patent number: 8666079
    Abstract: A method includes receiving data which has been encoded according to a first higher complexity protection scheme and compressed. The method also includes decompressing the data. The method also includes decoding the data according to the first higher complexity protection scheme using a first higher complexity key. The method also includes encoding at least the first portion of the data according to a second higher complexity protection scheme using a second higher complexity key. The method also includes encoding at least a second portion of the data according to a lower complexity protection scheme using a lower complexity key.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: March 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Chad William Kendall, Narendra Sankar
  • Patent number: 8660261
    Abstract: An encryption-enabled entropy coder for a multimedia codec is disclosed. The entropy coder implements a randomized Huffman coding scheme without storing multiple sets of Huffman tables in a ROM. The entropy coder includes a ROM storing a single set of code tables, a table lookup section coupled to the ROM which converts symbols to original codewords and vice versa by performing table lookup, and a table randomizer section for converting original Huffman codewords to randomized Huffman codewords and vice versa using an isomorphic code generator algorithm. The table randomizer section performs the conversion based on a key hopping sequence generated by a pseudorandom bit generator using an encryption/decryption key.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: February 25, 2014
    Assignee: Mediatek Singapore Pte. Ltd.
    Inventors: Yu-Lin Chang, Wensheng Zhou
  • Patent number: 8595488
    Abstract: Various embodiments include an apparatus and a method to secure protected digital document content from tampering by their user, such as unauthenticated use or use violating a policy of the digital document. The digital document file can be transferred from a network node such as a web site server to a digital appliance, such as a computer, in encrypted form. The digital document file can be resident already on a device, and/or be transferred into a device that is connected to the digital appliance. The device (hereafter a DRM device) can internally store the digital document or part of the document. The DRM device may decrypt the digital document when requested to do so. The device may further format the content for usage, for example, convert text into its graphic bitmap representation. Device formatting can include sending plain text data to the digital appliance. The device may further process degradation to the resulted file, for example, reduce the resolution of the graphic representation.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: November 26, 2013
    Assignee: SanDisk Technologies Inc.
    Inventors: Gidon Elazar, Dan Harkabi, Nehemiah Weingarten
  • Patent number: 8571216
    Abstract: In an embodiment, an integrated circuit comprises a decompressor, an encrypt unit, and an on-chip image buffer coupled to the decompressor and the encrypt unit. The decompressor is configured to receive a compressed video stream, and to reconstruct a first frame of the video stream in the on-chip buffer. The encrypt unit is configured to generate one or more pixel block streams from pixel blocks of the first frame in the on-chip buffer according to sequence data describing an order of access of the pixel blocks to reconstruct subsequent frames of the video stream. The sequence data was previously generated via processing of the video stream by the integrated circuit, and the encrypt unit is configured to encrypt the pixel block streams to be written to an external memory. In an embodiment, an integrated circuit comprises a decrypt unit configured to decrypt an encrypted, compressed video stream; an on-chip buffer; and a decompressor coupled to the decrypt unit and the on-chip buffer.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: October 29, 2013
    Assignee: Apple Inc.
    Inventor: Conrad H. Ziesler
  • Patent number: 8571215
    Abstract: The invention involves collective management of video and audio content in a content provider. The video and audio content is available in multiple potential versions, e.g. in the form of scalable media or media pre-encoded to fixed bandwidth levels. The video and audio data is associated with bandwidth share information enabling estimation of a respective apportionment of a total available bandwidth to the video and audio content. The provider uses this share information and information of the total assignable bandwidth level for providing a respective video version and audio version from the multiple potential versions. This allows for increased user-quality when rendering the video and audio data as optimal video and audio version can be dynamically provided during the media session.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: October 29, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Annise Taleb, Per Frojdh
  • Patent number: 8572390
    Abstract: A method for transmitting data, a receiving method, related devices, and an aircraft equipped with the devices. The method includes determining an authentication word of the data; processing the data to obtain processed data; and transmitting the processed data on a transmission channel.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: October 29, 2013
    Assignee: Airbus Operations S.A.S.
    Inventors: Agnes Leclercq, Cecile Colle-Morlec
  • Patent number: 8554746
    Abstract: One embodiment of the present invention is directed to a method for compressing data generated by multiple data sources. The method includes steps of partitioning data generated by the multiple data sources into data partitions, the data included in each data partition containing inter-data-source redundancies and, for each data partition, compressing the data in the data partition to remove the inter-data-source redundancies.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: October 8, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Marcelo Weinberger, Raul Herman Etkin, Erik Ordenllich, Gadiel Seroussi
  • Patent number: 8542825
    Abstract: This specification describes technologies relating to imparting cryptographic information in network communications.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: September 24, 2013
    Assignee: Adobe Systems Incorporated
    Inventors: Asa Whillock, Edward Chan, Srinivas Manapragada, Matthew Kaufman, Pritham Shetty, Michael Thornburgh
  • Patent number: 8542829
    Abstract: A method of transmitting data by which cipher-transmission of digital information data for which forbidden codes including timing identification codes are predetermined can be carried out with enciphered digital information data without containing undesirable forbidden code, in which digital information data contained in word sequence data which contain also time reference code data composed of the timing identification codes are subjected to enciphering process without producing the forbidden code to produce the enciphered digital information data which do not contain any forbidden code and then enciphered word sequence data are constituted with the enciphered digital information data and the time reference code data to be transmitted.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: September 24, 2013
    Assignee: Sony Corporation
    Inventors: Yujiro Ito, Tsutomu Shimosato
  • Patent number: 8532187
    Abstract: The present invention relates to a method that uses a motion vector of a predictive video frame of a sub-layer to encode a video signal and decode encoded video data. The method encodes a video signal using a preset method to a bit stream of a base layer while encoding the video signal using a scalable MCTF method to a bit stream of an enhanced layer. When an arbitrary frame of the video signal is encoded, information, enabling at least one vector, derived from a first motion vector of a first block included in the bit stream of the base layer in the same direction as the first motion vector, to be used as a motion vector of an image block in the arbitrary frame, is recorded in the bit stream of the enhanced layer. The first motion vector is directed in the same direction as a temporal direction from the arbitrary frame to the first block.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: September 10, 2013
    Assignee: LG Electronics Inc.
    Inventors: Byeong Moon Jeon, Seung Wook Park, Ji Ho Park
  • Patent number: 8526610
    Abstract: A novel method and apparatus for protection of streamed media content is disclosed. In one aspect, the apparatus includes control means for governance of content streams or content objects, decryption means for decrypting content streams or content objects under control of the control means, and feedback means for tracking actual use of content streams or content objects. The control means may operate in accordance with rules received as part of the streamed content, or through a side-band channel. The rules may specify allowed uses of the content, including whether or not the content can be copied or transferred, and whether and under what circumstances received content may be “checked out” of one device and used in a second device. The rules may also include or specify budgets, and a requirement that audit information be collected and/or transmitted to an external server. In a different aspect, the apparatus may include a media player designed to call plugins to assist in rendering content.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: September 3, 2013
    Assignee: Intertrust Technologies Corporation
    Inventors: Talal G. Shamoon, Ralph D. Hill, Chris D. Radcliffe, John P. Hwa, W. Olin Sibert, David M. Van Wie
  • Patent number: 8526613
    Abstract: Methods of providing a transport streams are disclosed. In one embodiment, among others, a method comprises receiving an input transport stream having a plurality of packet identifier (PID) streams included therein, the plurality of PID streams comprising first, second, third, and fourth PID streams, decrypting the first PID stream, statistically multiplexing the second PID stream, encrypting the third PID stream, and transmitting the fourth PID stream, wherein the receiving, decrypting, statistically multiplexing, encrypting, and transmitting are implemented at a transport stream apparatus.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: September 3, 2013
    Inventor: Howard G. Pinder
  • Patent number: 8504835
    Abstract: The present invention is directed to an architecture and mechanism for securely backing up files and directories on a local machine onto untrusted servers over an insecure network.
    Type: Grant
    Filed: September 1, 2012
    Date of Patent: August 6, 2013
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Aviel D. Rubin