1
Craig A Finseth, Jeffrey A Brown, Philip E Hsiao, Robert G Arsenault: Method and apparatus for sharing viewing preferences. The DirecTV Group, Georgann S Grunebach, John A Crook III, November 2, 2004: US06813775 (145 worldwide citation)

A method, apparatus, and article of manufacture for sharing viewer preference information between a first user and a second user is disclosed. The method comprises the steps of storing first user viewer preference information characterizing media programs selected by the first user in a memory of a ...


2
Raynold M Kahn, Gregory J Gagnon, David D Ha, Peter M Klauss, Christopher P Curren, Thomas H James: Video on demand pay per view services with unmodified conditional access functionality. The DIRECTV Group, Georgann S Grunebach, John A Crook III, February 8, 2005: US06853728 (118 worldwide citation)

A system and method for storing and retrieving program material for subsequent replay is disclosed. The method comprises the steps of receiving access control information and the program material encrypted according to a first encryption key, the access control information including the first encryp ...


3
Donald C D Chang, Ming U Chang, Ying Feria, Weizheng Wang, Alan Cha, Kar W Yung, Frank A Hagen: Stratospheric platforms based mobile communications architecture. The DIRECTV Group, Georgann S Grunebach, John A Crook III, June 29, 2004: US06756937 (23 worldwide citation)

A communication system including a first transceiver located on a first platform at a predetermined altitude. A first antenna is located on the first platform and connected to the first transceiver. A second antenna is connected to the other end of the first transceiver. A second transceiver is loca ...


4
Bo Ryu, Yongguang Zhang: Internet-augmented radio port controller unit (RPCU) of personal acces communications systems (PACS). The DIRECTV Group, Georgann S Grunebach, John A Crook III, January 25, 2005: US06847633 (21 worldwide citation)

A method, apparatus, article of manufacture, and a memory structure communicating information, particularly information transferred to and from an Internet host. The apparatus comprises a radio port control unit, comprising a router, and a stub. The router is communicatively coupled to transmit and ...


5
Donald C D Chang, Kar W Yung, David C Cheng, Ming U Chang, Frank A Hagen: Position location of multiple transponding platforms and users using two-way ranging as a calibration reference for GPS. The Directv Group, Georgann S Grunebach, John A Crook III, August 31, 2004: US06785553 (20 worldwide citation)

A method and system for using two-way ranging navigation to accurately determine the location of a transponder platform above-Earth or a fixed or mobile target on the ground or on water. The two-way ranging navigation measurements are used as calibration references, thereby improving the positioning ...


6
Frank A Hagen, Kar W Yung, Ying Feria, Donald C D Chang: Synchronization method and apparatus for multi-platform communication system. The Directv Group, Georgann S Grunebach, John A Crook III, June 29, 2004: US06757546 (18 worldwide citation)

A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to a plurality of the plurality of i ...


7
Son K Dao, Yongguang Zhang, Eddie C Shek, Asha Vellaikal: Mobile base station for disseminating information. The DIRECTV Group, Goorgann S Grunebach, John A Crook III, May 3, 2005: US06889032 (17 worldwide citation)

A device for implementing a multimedia communication dissemination system is disclosed herein. The communication system integrates heterogeneous satellite transmission systems, local area computer networks, and the public telephone system to implement a flexible, high-speed communication system. The ...


8
Donald C D Chang, Alan Cha: Stratospheric-based communication system for mobile users having adaptive interference rejection. The DIRECTV Group, Georgann S Grunebach, John A Crook III, May 17, 2005: US06895217 (13 worldwide citation)

A system has a stratospheric platform with a payload controller and a phased array antenna having a plurality of elements. A gateway station communicates with the stratospheric platform. The gateway station scales the plurality of elements to form a reconfigurable plurality of beams. The gateway sta ...


9
Weizheng Wang, Donald C D Chang, Ming U Chang, Ying Feria, Alan Cha: Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions. The Directv Group, Georgann S Grunebach, John A Crook III, June 15, 2004: US06751458 (11 worldwide citation)

A communication system has a high altitude communication device generating a plurality of user link beams having a first communication characteristic and a feeder link having a first communication characteristic. A gateway terminal receives the user link beam. A user terminal receives at least one o ...


10
Donald C D Chang, Ming U Chang, Ying Feria, Harold Rosen: Fixed wireless back haul for mobile communications using stratospheric platforms. The DirecTV Group, Georgann S Grunebach, John A Crook III, December 7, 2004: US06829479 (8 worldwide citation)

A method and system for communicating includes a plurality of cells having base units therein. Each of the base units communicates with a plurality of users within the cells. A communications platform is located in a stratospheric location for transmitting and receiving information with respect to t ...