Abstract: A key-sharing scheme is used to control distribution and use of video and audio content in personal digital assistants (PDAs) and other wireless devices. A private key is split into key-shares using a Blakley-Shamir key splitting technique and the key-shares are distributed to various network entities including a finance server and security server. Key-shares are also stored in a user's subscriber identity module (SIM) and a security processor of the PDA. The key-shares from the network entities are provided to the PDA after the user requests specific video or audio content and credit verification is performed. The PDA's security processor combines the key-shares to form the decryption key for use in playing the content by the PDA's communications processor. When a service limit is reached, the PDA's security processor purges the key-shares to prevent further use of the content.

Abstract: A key-sharing scheme is used to control distribution and use of video and audio content in personal digital assistants (PDAs) and other wireless devices. A private key is split into key-shares using a Blakley-Shamir key splitting technique and the key-shares are distributed to various network entities including a finance server and security server. Key-shares are also stored in a user's subscriber identity module (SIM) and a security processor of the PDA. The key-shares from the network entities are provided to the PDA after the user requests specific video or audio content and credit verification is performed. The PDA's security processor combines the key-shares to form the decryption key for use in playing the content by the PDA's communications processor. When a service limit is reached, the PDA's security processor purges the key-shares to prevent further use of the content.

Abstract: A key-sharing scheme is used to control distribution and use of video and audio content in personal digital assistants (PDAs) and other wireless devices. A private key is split into key-shares using a Blakley-Shamir key splitting technique and the key-shares are distributed to various network entities including a finance server and security server. Key-shares are also stored in a user's subscriber identity module (SIM) and a security processor of the PDA. The key-shares from the network entities are provided to the PDA after the user requests specific video or audio content and a credit verification is performed. The PDA's security processor combines the key-shares to form the decryption key for use in playing the content by the PDA's communications processor. When a service limit is reached, the PDA's security processor purges the key-shares to prevent further use of the content.

Abstract: A key-sharing scheme is used to control distribution and use of video and audio content in personal digital assistants (PDAs) and other wireless devices. A private key is split into key-shares using a Blakley-Shamir key splitting technique and the key-shares are distributed to various network entities including a finance server and security server. Key-shares are also stored in a user's subscriber identity module (SIM) and a security processor of the PDA. The key-shares from the network entities are provided to the PDA after the user requests specific video or audio content and a credit verification is performed. The PDA's security processor combines the key-shares to form the decryption key for use in playing the content by the PDA's communications processor. When a service limit is reached, the PDA's security processor purges the key-shares to prevent further use of the content.

Abstract: A system for two processors communicating though unidirectional links by embedding a strobe signal into the data by providing differential signals with different common mode signal levels.

Abstract: A system for two processors communicating though unidirectional links by embedding a strobe signal into the data by providing differential signals with different common mode signal levels.

Abstract: Briefly, in accordance with one embodiment of the invention, a portable computing or communication device includes nodes that may request a service to be performed or a server that may be able to provide the service. The nodes may include a service manager that may keep track of what services are available to that particular node.

Abstract: A system includes a communication link, a first node and a second node. The first link communicates a request over the communication link to the second node indicating a suspended state of operation of the first node. In response to this communication of the request, the first node is placed in a suspended state of operation.

Abstract: A communication device (200, FIG. 2) includes a connection manager (330, FIG. 3), which establishes and manages voice and data connections with various networks supported by the device. In response to a connection request from an application (302), the connection manager (330) selects a connection type based on the request preferences and information regarding the various possible available connections. The connection manager (330) then provides network isolation between the applications (302) and the protocol stack (222, FIG. 2) used to make the connection. The device is capable of concurrently supporting multiple connections for multiple applications (302) using multiple protocol stacks (222) and/or networks. Application developers can use a common interface to the connection manager (330), and thus an application does not need to be limited to using only specific protocol stacks.

Abstract: A key-sharing scheme is used to control distribution and use of video and audio content in personal digital assistants (PDAs) and other wireless devices. A private key is split into key-shares using a Blakley-Shamir key splitting technique and the key-shares are distributed to various network entities including a finance server and security server. Key-shares are also stored in a user's subscriber identity module (SIM) and a security processor of the PDA. The key-shares from the network entities are provided to the PDA after the user requests specific video or audio content and a credit verification is performed. The PDA's security processor combines the key-shares to form the decryption key for use in playing the content by the PDA's communications processor. When a service limit is reached, the PDA's security processor purges the key-shares to prevent further use of the content.

Abstract: A wireless, peer-to-peer, capability addressable network (22) is disclosed. The network (22) accommodates any number of peers (20). Network connections are formed based upon proximity between peers (20) and upon a needs and capabilities evaluation (82). Wireless communications occur at a sufficiently low power to form a detection zone (28) of less than about five meters for many peers (20).

Abstract: A method for bonding (905) to a device (901, 902). The method includes a step of transmitting a beacon message (2500). The method also includes steps of (i) selecting a beacon opcode (2501), (ii) selecting an identifier (2512), (iii) selecting an identifier type (2514), (iii) selecting an identifier address (2516), composing the beacon opcode (2501), the identifier (2512), the identifier type (2514) and the identifier address (2516) into the beacon message (2500). The method also includes a step of receiving, in response to the transmitting step, a make bond message (2530).

Abstract: A method (300, FIG. 3) controls CU (140, FIGS. 1, 6) hand-off in a non-geostationary orbit (NSGO) satellite system (100, FIG. 1) without consuming large amounts of bandwidth or satellite processing power. Using method (300), a network control facility (NCF) (130, FIGS. 1, 5) divides the earth (102, FIG. 2) into suitable regions 200 (FIG. 2), or geographical areas of the earth sized so that all of the CUs (140, 142, 144, FIG. 1) within a region (200) can be handed-off as a group rather than handling each station individually. When it is determined through the method (300) that it is time to hand-off communications in a particular region, all CUs within that region are directed to effectuate a hand-off at substantially the same time.