General Instrument Corporation

Motorola Mobility LLC

General Instrument Corporation of Delaware

La Jolla Networks, Inc.

Paganini Foundation, L.l.c.

Google Technology Holdings LLC

Tiernan, James C.

Fellows, Jonathan

Jonathan A Fellows

Alexander Medvinsky

Paul Moroney

Eric J Sprunk

Steven E Anderson

James C Tiernan

Michael Andrew Grossman

Poornima Assudo Lalwaney

Marc W Kauffman

Clive Eric Holborow

Sasha Medvinsky

A system and method for scalable multifunctional network communication between presentation devices and service providers are disclosed. A group of consumer premise equipment (CPE) units are coupled to the presentation devices, and a headend control computer receives upstream messages from the CPE units and for sending downstream messages to the CPE units. A group of service provider control subsystems interface between the headend control computer and the service providers. The head end control computer receives messages from the CPE units and transports them to the service provider control subsystems, and the headend control computer receives messages from the service provider control subsystems and transports them to the CPE units.

System and method for scalable multifunctional network communication

A secure Internet Protocol (IP) telephony system, apparatus, and methods are disclosed. Communications over an IP telephony system can be secured by securing communications to and from a Cable Telephony Adapter (CTA). The system can include one or more CTAs, network servers, servers configured as signaling controllers, key distribution centers (KDC), and can include gateways that couple the IP telephony system to a Public Switched Telephone Network (PSTN). Each CTA can be configured as secure hardware and can be configured with multiple encryption keys that are used to communicate signaling or bearer channel communications. The KDC can be configured to periodically distribute symmetric encryption keys to secure communications between devices that have been provisioned to operate in the system and signaling controllers. The secure devices, such as the CTA, can communicate with other secure devices by establishing signaling and bearer channels that are encrypted with session specific symmetric keys derived from a symmetric key distributed by a signaling controller.

Internet protocol telephony security architecture

An arrangement for inserting advertisement media into a streaming multimedia file destined for an end-user uses a caching inserter including a first cache for storing a loaded advertisement file and a second cache for holding the streaming multimedia file that needs to be buffered as the advertisement file is sent to the end-user. The advertisement file may be inserted at the beginning of the multimedia file, the end, or at any point during the stream. Once the advertisement begins to be sent to the end-user, the incoming multimedia stream is cached and then is played out of the cache once the advertisement has ended. As a result of the time delay associated with the advertisement, the remainder of the multimedia file must be cached then played out until the stream is complete.

Seamless arbitrary data insertion for streaming media

A one-way adapter such as a cable modem is initialized to allow a personal computer to receive data from a computer network such as the Internet via a broadcast channel, while transmitting data upstream to the computer network via a telephone line. First, a two-way adapter such as a phone modem is initialized by establishing a telephone link with a terminal server of an Internet Service Provider telephone network. The terminal server obtains an IP address from a phone network address server, and assigns the IP address to the phone modem stack. Next, the cable modem stack sends out a request for session initialization to a cable modem driver. The request is processed by a packet processing relay agent (PPRA), and the IP address of the phone modem is inserted into the packet. The IP packet destination address is set to that of a cable network address server. A cable network address server receives the packet via an upstream telephone line and responds with IP address and configuration information for the relay agent address. The phone modem receives the response and passes it to the cable modem stack via the PPRA. The cable modem is thus initialized with IP address and configuration information and is ready to receive Internet data via a one-way RF channel.

Dynamic network configuration of a one-way adapter using a proxy agent that communicates with a resource server through a configured return path adapter

A method and apparatus are provided for receiving a packet stream having fixed length packets. Data carried in the packet stream is selectively processed for output to a computer. A packet identifier filter selects particular packets from the recovered packet stream. A computer disk controller receives the packets selected by the filter and manages the transfer of packet data from the packets to and from a buffer. A data bus is coupled to the disk controller for communicating the packet data from the buffer to the computer. A data compression stage prior to the disk controller compresses packets from the recovered packet stream in order to provide a gap between data carried by successive packets to be provided by the disk controller. In this manner, a low cost disk controller chip can be used to control the buffering of data in a cable or satellite television modem that provides, e.g., Internet access.

MPEG packet header compression for television modems

Growing community of inventors

Del Mar, CA, United States of America

Jonathan A Fellows