US Patent No: 5,768,539

Number of patents in Portfolio can not be more than 2000

Downloading applications software through a broadcast channel

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Set-top terminals utilized in broadband broadcast networks are becoming increasingly intelligent (programmable). However, transmitting executable code, data and interactive audio/video materials through a selectively dedicated link requires an extensive, broadband point-to-point broadband network, which is prohibitively expensive to implement for large numbers of customers. The present invention provides for downloading application software and transmitting audio/video information through one channel of a digital broadcast network. The network also provides two-way, low-speed data communications capacity, e.g. for signaling and/or interactive text services. Signaling via data communication with a text server controls downloading of executable code from the digital broadcast channel into a programmable digital set-top terminal. Execution of the downloaded code in turn controls selective capture and presentation of audio and video segments received over one of the digital broadcast channels. Resident operating system and application software in the terminal provides all communication with nodes of the network. The downloaded code forms a non-resident application having a set of predetermined function calls for activating communication functions of the resident software.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
VERIZON SERVICES CORP.ARLINGTON, VA388

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Darr, Jr John W Great Falls, VA 4 1124
Desa, Colin Joseph Herndon, VA 23 559
Erdely, Jr Laszlo Crofton, MD 2 481
Hudson, Jr Henry G Annapolis, MD 5 1423
Metz, Erik Christopher Bowie, MD 3 499
Zimmerman, Jr Paul Andrew Silver Spring, MD 2 481

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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HITACHI, LTD. (1)
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Other [Check patent profile for assignment information] (1)
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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SONY ELECTRONICS INC. (57)
6,204,842 System and method for a user interface to input URL addresses from captured video frames 27 1998
6,912,513 Copy-protecting management using a user scrambling key 36 1999
7,039,614 Method for simulcrypting scrambled data to a plurality of conditional access devices 28 1999
6,697,489 Method and apparatus for securing control words 109 2000
7,225,164 Method and apparatus for implementing revocation in broadcast networks 10 2000
6,694,396 Interfacing an NRSS-A smart card within an NRSS-B PCMCIA 1 2000
7,336,787 Critical packet partial encryption 38 2002
7,151,831 Partial encryption and PID mapping 61 2002
7,127,619 Decoding and decryption of partially encrypted information 75 2002
7,124,303 Elementary stream partial encryption 116 2002
7,895,616 Reconstitution of program streams split across multiple packet identifiers 2 2002
7,530,084 Method and apparatus for synchronizing dynamic graphics 2 2002
7,702,589 Method for simulcrypting scrambled data to a plurality of conditional access devices 3 2002
7,376,233 Video slice and active region based multiple partial encryption 12 2002
7,302,059 Star pattern partial encryption 3 2002
7,242,773 Multiple partial encryption using retuning 12 2002
7,218,738 Encryption and content control in a digital broadcast system 20 2002
7,155,012 Slice mask and moat pattern partial encryption 61 2002
7,350,082 Upgrading of encryption 2 2002
7,292,691 Progressive video refresh slice detection 3 2002
7,765,567 Content replacement by PID mapping 4 2002
7,233,669 Selective encryption to enable multiple decryption keys 70 2002
7,120,250 Content distribution for multiple digital rights management 89 2002
7,039,938 Selective encryption for video on demand 71 2002
7,730,300 Method and apparatus for protecting the transfer of data 10 2003
7,724,907 Mechanism for protecting the transfer of digital content 6 2003
7,151,833 Selective encryption to enable trick play 31 2003
7,409,702 Auxiliary program association table 8 2003
7,215,770 System and method for partially encrypted multimedia stream 1 2003
7,093,274 Apparatus and method for accommodating fast change of digital streaming sources and formats 1 2003
7,286,667 Decryption system 13 2003
7,711,115 Descrambler 1 2003
7,508,942 Multi-process descrambler 3 2003
7,302,058 Method and apparatus for securing control words 5 2004
7,853,980 Bi-directional indices for trick mode video-on-demand 1 2004
7,565,546 System, method and apparatus for secure digital content transmission 4 2004
7,292,692 Content scrambling with minimal impact on legacy devices 33 2004
7,620,180 Preparation of content for multiple conditional access methods in video on demand 2 2004
7,346,163 Dynamic composition of pre-encrypted video on demand content 4 2004
7,747,853 IP delivery of secure digital content 6 2004
7,823,174 Macro-block based content replacement by PID mapping 4 2004
7,343,013 Composite session-based encryption of video on demand content 1 2004
7,263,187 Batch mode session-based encryption of video on demand content 4 2004
8,572,408 Digital rights management of a digital device 0 2004
8,041,190 System and method for the creation, synchronization and delivery of alternate content 0 2005
7,895,617 Content substitution editor 15 2006
8,185,921 Parental control of displayed content using closed captioning 1 2006
7,555,464 Multiple DRM management 22 2006
8,667,525 Targeted advertisement selection from a digital stream 0 2006
8,645,988 Content personalization for digital content 0 2006
7,751,560 Time division partial encryption 0 2006
7,287,168 Partial encryption and PID mapping 8 2006
7,567,939 Method and apparatus for implementing revocation in broadcast networks 0 2006
7,925,016 Method and apparatus for descrambling content 0 2007
7,920,703 Descrambler 0 2009
8,488,788 Method for simulcrypting scrambled data to a plurality of conditional access devices 0 2009
8,379,853 Descrambler 0 2011
 
RPX CORPORATION (17)
7,370,114 Software downloading using a television broadcast channel 18 1999
7,870,189 Input device having positional and scanning capabilities 3 2005
7,912,961 Input device for allowing input of unique digital code to a user's computer to control access thereof to a web site 0 2006
7,596,786 Method and apparatus for utilizing an existing product code to issue a match to a predetermined location on a global network 3 2007
7,925,780 Method for connecting a wireless device to a remote location on a network 2 2007
7,908,467 Automatic configuration of equipment software 4 2007
7,819,316 Portable scanner for enabling automatic commerce transactions 3 2007
7,636,788 Method and apparatus for matching a user's use profile in commerce with a broadcast 3 2007
7,536,478 Method and apparatus for opening and launching a web browser in response to an audible signal 3 2007
7,904,344 Accessing a vendor web site using personal account information retrieved from a credit card company web site 0 2008
7,548,988 Software downloading using a television broadcast channel 12 2008
7,739,353 Launching a web site using a personal device 5 2008
7,822,829 Method for interfacing scanned product information with a source for the product over a global network 8 2008
8,005,985 Method and apparatus for utilizing an audibly coded signal to conduct commerce over the internet 0 2008
7,979,576 Method and apparatus for connecting a user location to one of a plurality of destination locations on a network 0 2008
7,912,760 Method and apparatus for utilizing a unique transaction code to update a magazine subscription over the internet 0 2009
8,296,440 Method and apparatus for accessing a remote location with an optical reader having a programmable memory system 0 2009
 
COMCAST IP HOLDINGS I, LLC (13)
6,253,375 System for interactively distributing information services 127 1997
6,754,905 Data structure and methods for providing an interactive program guide 58 1999
6,614,843 Stream indexing for delivery of interactive program guide 18 1999
6,704,359 Efficient encoding algorithms for delivery of server-centric interactive program guide 11 2000
6,754,271 Temporal slice persistence method and apparatus for delivery of interactive program guide 13 2000
7,657,918 System for interactively distributing information services 0 2000
7,433,406 Efficient encoding algorithms for delivery of server-centric interactive program guide 2 2003
7,738,560 Temporal slice persistence method and apparatus for delivery of interactive program guide 0 2004
8,578,419 Server-centric customized interactive program guide in an interactive television environment 0 2005
7,865,926 System for interactively distributing information services 0 2009
8,661,465 Apparatus and method for combining realtime and non-realtime encoded content 0 2010
8,522,277 Interactive user interface 0 2010
8,683,508 System for interactively distributing information services using randomization 0 2010
 
MICROSOFT CORPORATION (13)
6,094,679 Distribution of software in a computer network environment 90 1998
7,168,086 Proxy for video on demand server control 9 1998
6,901,453 Modularization of broadcast receiver driver components 16 2000
7,383,564 Video on demand methods and systems 7 2001
7,392,532 Interactive video programming methods 17 2003
7,386,874 Video on demand methods and systems 12 2004
7,363,646 Video on demand methods and systems 2 2004
7,913,283 Video on demand methods and systems 0 2004
7,486,692 Modularization of broadcast receiver driver components 0 2004
7,882,269 Modularization of broadcast receiver driver components 1 2004
7,493,647 Video on demand 7 2005
7,865,919 Proxy for video on demand server control 0 2005
7,793,325 Video on demand methods and systems 0 2008
 
SONY CORPORATION (13)
6,370,143 Transmission system and transmission method, and reception system and reception method 8 1998
6,278,493 Information processor, information processing method as well as broadcasting system and broadcasting method 7 1998
6,580,462 Television broadcast receiving system 19 1999
6,614,470 Devices and methods for processing digital image data compatible with a television receiver 18 1999
6,985,189 Multimedia terminal equipment and digital processing method 13 1999
6,668,158 Control method, control apparatus, data receiving and recording method, data receiver and receiving method 40 1999
7,080,395 Information processor, information processing method as well as broadcasting system and broadcasting method 1 2001
7,468,751 Devices and methods for processing digital image data compatible with a television receiver 0 2003
7,076,205 Control method, control apparatus, data receiving and recording method, data receiver and receiving method 2 2003
8,194,143 Digital camera apparatus and recording method thereof 0 2003
8,351,845 Control method, control apparatus, data receiving and recording method, data receiver and receiving method 0 2006
8,606,172 Control method, control apparatus, data receiving and recording method, data receiver and receiving method 0 2010
8,588,678 Control method, control apparatus, data receiving and recording method, data receiver and receiving method 0 2010
 
INTEL CORPORATION (7)
6,157,411 Method and apparatus for compiling a repository of entertainment system data from multiple sources 64 1997
6,584,509 Recognizing audio and video streams over PPP links in the absence of an announcement protocol 42 1998
6,198,511 Identifying patterns in closed caption script 17 1998
7,062,765 System and method for updating information via a network 46 1999
6,996,627 System and method for providing update information 30 1999
7,650,423 System and method for providing update information 4 2006
8,181,204 Linking to video information 0 2007
 
OPENTV, INC. (7)
7,634,787 Automatic control of broadcast and execution of interactive applications to maintain synchronous operation with broadcast programs 14 1999
7,069,571 Automated retirement of interactive applications using retirement instructions for events and program states 14 1999
7,028,327 Using the electronic program guide to synchronize interactivity with broadcast programs 40 2000
7,631,338 Interactive content delivery methods and apparatus 1 2001
7,222,155 Synchronous updating of dynamic interactive applications 27 2001
RE44685 Apparatus for transmitting and receiving executable applications as for a multimedia system, and method and system to order an item using a distributed computing system 0 2001
8,201,208 Carousel proxy 1 2003
 
NUMECENT HOLDINGS, INC. (6)
8,438,298 Intelligent network streaming and execution system for conventionally coded applications 2 2006
8,261,345 Rule-based application access management 1 2007
8,024,523 Opportunistic block transmission with time constraints 0 2008
8,509,230 Software streaming system and method 0 2009
8,527,706 Opportunistic block transmission with time constraints 0 2011
8,661,197 Opportunistic block transmission with time constraints 0 2012
 
PANASONIC CORPORATION (6)
7,516,197 Control content transmission method and storage-based broadcasting system 0 2000
7,535,960 Moving picture transmission apparatus, moving picture reception apparatus, and moving picture data record medium 0 2003
8,104,068 Program replacing method 1 2004
7,869,462 Broadcast system and method therefor 0 2006
8,458,762 Program replacing method 2011
8,453,195 Program replacing method 0 2011
 
THOMSON LICENSING (6)
7,150,029 System for formatting and processing multimedia program data and program guide information 43 1998
7,668,189 Adaptive transport protocol 0 1999
7,568,208 Method and apparatus for using a single password set in an integrated television system 1 2000
7,774,800 Applications manager with variable management instruction set 0 2005
7,770,187 Applications manager with variable management instruction set 0 2005
8,528,038 Process for downloading data preceded by announcement signals 0 2012
 
HUGHES ELECTRONICS CORPORATION (5)
6,084,910 Statistical multiplexer for video signals 11 1997
7,877,290 System and method for transmitting, receiving and displaying advertisements 5 2000
6,980,529 Method and apparatus for determining the configuration of connections associated with a satellite receiver/decoder 3 2000
7,085,529 Method and apparatus for determining a direct-to-home satellite receiver multi-switch type 17 2001
6,741,574 Method and apparatus for performing satellite selection in a broadcast communication system 20 2002
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (5)
6,727,955 Communication system for providing a transport entity with mutually related objects 4 1998
6,928,468 System for broadcasting software applications and portable data communications device for use in such a system 54 1999
6,898,789 Communication system for combining mutually realted objects into a transport entity 0 2001
8,191,102 Method of transmitting interactive television 0 2003
8,266,669 Method and apparatus for storing an interactive television program 0 2004
 
CENTURYLINK INTELLECTUAL PROPERTY LLC (4)
8,418,194 System and method for dynamic bandwidth allocation 0 2007
8,224,313 System and method for controlling vehicle systems from a cell phone 1 2008
8,321,123 System and method for traffic condition communications 1 2011
8,538,408 System and method for controlling vehicle systems from a cell phone 0 2012
 
ENOUNCE, INC. (4)
6,598,228 Method and apparatus for controlling time-scale modification during multi-media broadcasts 52 1999
7,100,188 Method and apparatus for controlling time-scale modification during multi-media broadcasts 5 2003
7,703,117 Method and apparatus for controlling time-scale modification during multi-media broadcasts 0 2006
8,566,885 Method and apparatus for controlling time-scale modification during multi-media broadcasts 0 2010
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (4)
6,035,304 System for storing and playing a multimedia application adding variety of services specific thereto 67 1997
6,266,810 Remote program downloading system and apparatus 118 1998
6,525,775 Method for updating software in a digital television receiver using recorded data 24 1998
6,470,496 Control program downloading method for replacing control program in digital broadcast receiving apparatus with new control program sent from digital broadcast transmitting apparatus 79 1999
 
MEDIAIP, INC. (4)
8,255,966 Method and apparatus for internet-based interactive programming 2 2006
7,937,740 Method and apparatus for interactive programming using captioning 1 2008
8,402,504 Method and apparatus for interactive programming using captioning 0 2011
8,661,490 Method and apparatus for internet-based interactive programming 0 2012
 
MOTOROLA MOBILITY LLC (4)
5,867,230 System, device, and method for streaming a multimedia file encoded at a variable bitrate 64 1997
7,487,534 Application programming interface (API) for accessing and managing resources in digital television receiver 5 1999
7,120,926 Method and system of identifying software and firmware objects available for download over a network such as a cable television system 46 2000
6,813,778 Method and system for downloading and managing the enablement of a list of code objects 32 2000
 
SCIENTIFIC-ATLANTA, LLC (4)
7,539,834 System and method for a communication terminal to manage memory for downloadable applications 3 2005
7,810,131 Control system with global control stream for controlling a plurality of decoders 0 2005
7,805,750 Storage control system 0 2005
7,904,937 Uplink signaling for global decoder control 0 2010
 
HITACHI CONSUMER ELECTRONICS CO., LTD. (3)
7,173,674 Digital broadcast receiver unit 4 2003
7,436,458 Digital broadcast receiver unit 4 2004
8,345,168 Digital broadcast receiver unit 1 2011
 
LG ELECTRONICS INC. (3)
7,571,456 Downloading apparatus and method therof for digital broadcast receiver 0 1998
7,900,234 Broadcasting receiver and communication method using the broadcasting receiver 0 2007
8,566,863 Digital broadcast receiver and method for processing emergency alert system data in digital broadcast receiver 0 2010
 
LUCENT TECHNOLOGIES INC. (3)
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6,151,144 Wavelength division multiplexing for unbundling downstream fiber-to-the-home 23 1998
6,144,472 Upgrading a power-splitting passive optical network using optical filtering 22 1998
 
SAMSUNG ELECTRONICS CO., LTD. (3)
7,150,013 Apparatus and method for upgrading program 3 2002
6,609,097 Broadcast program capture and playback enhancement signal structure, receiver, and method 24 2002
8,316,412 Application execution method and apparatus 0 2007
 
SONY UNITED KINGDOM LIMITED (3)
7,685,618 Data broadcast method 6 2000
7,996,866 Data broadcast method 0 2010
7,890,975 Data broadcast method 1 2010
 
UNITED VIDEO PROPERTIES, INC. (3)
6,442,755 Electronic program guide using markup language 202 1999
7,073,188 Electronic program guide using markup language 5 2002
8,010,979 Electronic program guide using markup language 2 2006
 
ALCATEL (2)
6,259,471 Apparatus and service for transmitting video data 19 1997
6,836,793 Method of distributing data packets of system software where the receiving units acknowledge only proper reception 7 1998
 
AT&T INTELLECTUAL PROPERTY I, L.P. (2)
8,282,476 Multimedia-based video game distribution 3 2005
8,535,151 Multimedia-based video game distribution 0 2012
 
BANBURY TECHNOLOGIES LLC (2)
6,256,785 Method and system for providing interactive look-and-feel in a digital broadcast via an X-Y protocol 88 1996
8,650,607 Method and system for providing interactive look-and-feel in a digital broadcast via an X-Y protocol 0 2010
 
CISCO TECHNOLOGY, INC. (2)
7,752,648 Apparatus and methods for handling interactive applications in broadcast networks 1 2004
8,370,892 Apparatus and methods for handling interactive applications in broadcast networks 1 2010
 
DIGITAL NETWORKS NORTH AMERICA, INC. (2)
7,065,287 Apparatus, method and database for control of audio/video equipment 54 1999
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DISNEY ENTERPRISES, INC. (2)
7,702,752 Method and apparatus for redirection of server external hyper-link references 7 2005
8,117,286 Method and apparatus for redirection of server external hyper-link references 0 2010
 
EMBARQ HOLDINGS COMPANY, LLC (2)
7,925,423 System and method for traffic condition detection 3 2007
8,126,450 System and method for key free access to a vehicle 1 2008
 
INCEPTIA LLC (2)
6,763,025 Time division multiplexing over broadband modulation method and apparatus 91 2001
7,194,001 Time division multiplexing over broadband modulation method and apparatus 11 2004
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
7,017,179 Data receiving apparatus and method 10 1999
8,438,576 Generating and using constraints associated with software related products 0 2011
 
PREDIWAVE CORP. (2)
6,557,030 Systems and methods for providing video-on-demand services for broadcasting systems 61 2000
6,725,267 Prefetched data in a digital broadcast system 34 2000
 
SUN MICROSYSTEMS, INC. (2)
6,338,138 Network-based authentication of computer user 35 1998
6,460,086 Method and apparatus for delivery of a bytecode embedded within a transport stream 39 1998
 
THE DIRECTV GROUP, INC. (2)
7,552,458 Method and apparatus for transmission receipt and display of advertisements 12 2000
7,882,518 Method and apparatus for transmission, receipt and display of advertisements 4 2009
 
THROUGHPUT HOLDINGS, INC. (2)
7,099,316 Photonic home area network 6 1999
7,808,984 Photonic home area network 1 2006
 
ARRIS ENTERPRISES, INC. (1)
6,915,528 System and method for managing television programs within an entertainment system 29 2001
 
ARRIS SOLUTIONS, INC. (1)
7,181,759 System and method for providing interactivity for end-users over digital broadcast channels 8 2001
 
BE-LABS, INC. (1)
7,827,581 Wireless multimedia system 2 2001
 
DELL PRODUCTS L.P. (1)
7,426,571 Providing files to an information handling system using a remote access controller 0 2005
 
DIGITAL-VENDING SERVICES INTERNATIONAL, LLC (1)
8,676,712 Computer architecture for managing courseware in a shared use operating environment 0 2003
 
FUNAI ELECTRIC CO., LTD. (1)
6,940,921 Multimodule device with static behavior 0 2001
 
HITACHI MAXELL, LTD. (1)
7,889,281 Digital broadcast receiver unit 1 2008
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (1)
8,550,917 System for downloading real-time interaction data through mobile and broadcast converged networks and method thereof 0 2008
 
INSORS INTEGRATED COMMUNICATIONS (1)
8,471,890 Adaptive video communication channel 0 2009
 
KABUSHIKI KAISHA TOSHIBA (1)
6,373,534 Intelligent digital television receiver 66 1998
 
MCAFEE, INC. (1)
6,782,527 System and method for efficient distribution of application services to a plurality of computing appliances organized as subnets 42 2000
 
MEDIATEK INC. (1)
6,563,549 Method and apparatus for adaptively encoding an information stream 15 1998
 
NBCUNIVERSAL MEDIA LLC (1)
6,532,495 Internet download enhancement system 16 1999
 
NEC PERSONAL COMPUTERS, LTD. (1)
6,871,002 DSM-CC carousel receiver, receiving method used therefor, and recording medium storing a control program therefor 6 2000
 
NETSCOUT SYSTEMS, INC. (1)
6,519,714 Evaluating computer resources 17 1999
 
NOKIA SIEMENS NETWORKS GMBH & CO. KG (1)
7,444,665 Interactive television system 4 2002
 
OY NOKIA AB (1)
6,094,661 Transmission of multimedia objects in a digital broadcasting system 8 1998
 
PINE VALLEY INVESTMENTS, INC. (1)
7,869,801 Method for terminal configuration over a radio control channel 4 2006
 
Prasara Technologies, Inc. (1)
6,678,891 Navigational user interface for interactive television 187 1998
 
R.R. DONNELLEY & SONS COMPANY (1)
8,687,947 Systems and methods for variable video production, distribution and presentation 0 2012
 
RENESAS TECHNOLOGY CORP. (1)
6,477,185 Demultiplexing and decoding apparatus for coded audio and video data 42 1998
 
ROVI SOLUTIONS CORPORATION (1)
7,904,923 Applications registry for a television environment 0 2005
 
RPX-LV ACQUISITION LLC (1)
8,069,098 Input device for allowing interface to a web site in association with a unique input code 0 2008
 
SBC KNOWLEDGE VENTURES, L.P. (1)
8,365,218 Networked television and method thereof 2 2005
 
SBC KNOWLEDGE VENTURES, L.P. (1)
8,635,659 Audio receiver modular card and method thereof 0 2005
 
SCIENTIFIC-ATLANTA, INC. (1)
6,874,075 System and method for a communication terminal to manage memory and maintain a current application version for multiple applications 14 2003
 
SIEMENS AKTIENGESELLSCHAFT (1)
7,502,367 Method for providing a program module in a communications system 5 2001
 
SONY COMPUTER ENTERTAINMENT INC. (1)
6,792,245 Information reproducing apparatus and broadcasting system 6 1999
 
SONY DEUTSCHLAND GMBH (1)
7,180,904 Interface link layer device to build a distributed network 1 2000
 
SPECHE COMMUNICATIONS (1)
7,035,804 Systems and methods for automated audio transcription, translation, and transfer 45 2001
 
Sprint Communications Company L.P. (1)
8,214,520 Automated network source changes for real-time streaming media 2011
 
STREAM THEORY, INC. (1)
8,359,591 Streaming from a media device 1 2005
 
Stream Theory, Inc./Endeavors Technologies, Inc. (1)
7,577,751 Software streaming system and method 20 2005
 
T-MOBILE DEUTSCHLAND GMBH (1)
7,761,716 Method and arrangement for securing a man-machine dialogue 0 2001
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (1)
7,738,448 Method for generating and sending signaling messages 0 2005
 
TOKYO BROADCASTING SYSTEM, INC. (1)
6,160,544 Digital video distribution system 60 1997
 
U.S. Philips Corporation (1)
6,331,876 Method of updating software in a video receiver 26 1997
 
WALT DISNEY CORPORATION (1)
5,931,908 Visual object present within live programming as an actionable event for user selection of alternate programming wherein the actionable event is selected by human operator at a head end for distributed data and programming 215 1996
 
WEGENER COMMUNICATIONS, INC. (1)
7,930,711 Apparatus and method for addressing control in a network for distributed data 1 2003
 
WI-LAN INC. (1)
6,040,851 Small-format subsystem for broadband communication services 35 1998
 
WORLD GATE COMMUNICATIONS, LLC (1)
5,999,970 Access system and method for providing interactive access to an information source through a television distribution system 123 1996
 
WORLDGATE SERVICE, INC. (1)
5,961,603 Access system and method for providing interactive access to an information source through a networked distribution system 385 1997
 
ZH INTERACTIVE SYSTEMS L.L.C. (1)
6,446,262 Broadcasting interactive applications 52 1999