Abstract: A mobile device server includes a flexible architecture having a plurality of components for allowing various mobile devices and protocols to communicate with each other and to receive data from various information spaces. Interface devlets send and receive messages in respective protocols. Access infolets utilize respective access methods to provide an abstract view of various information spaces. Logic applets implement service and/or application logic by processing information from one or more infolets. A further component referred to as a let engine communicates with the devlets, infolets, and applets, and maintains user and device profile information to provide a flexible framework for the mobile device server that can readily support new devices and protocols.

Abstract: The present invention presents a system and method of providing information retrieved from a server from across a communication network that enables archiving services that do not interfere with existing components and protocols. The services enable users to retrieve and/or search for old information, even after such information has evolved or disappeared from the original server. The network resource naming (e.g. URL) format is extended to include archive directives that are intercepted and performed by a proxy server. The proxy interprets the archive directive and executes the specified archival command: e.g., adding the information to a storage repository, searching and retrieving the information from the storage repository, scheduling automatic archiving of specified server information, transparent archiving of information that is accessed by the client or of the client's cache. The information can be easily indexed by a timestamp.

Abstract: A mobile device server includes a flexible architecture having a plurality of components for allowing various mobile devices and protocols to communicate with each other and to receive data from various information spaces. Interface devlets send and receive messages in respective protocols. Access infolets utilize respective access methods to provide an abstract view of various information spaces. Logic applets implement service and/or application logic by processing information from one or more infolets. A further component referred to as a let engine communicates with the devlets, infolets, and applets, and maintains user and device profile information to provide a flexible framework for the mobile device server that can readily support new devices and protocols.

Abstract: A mobile device server includes a flexible architecture having a plurality of components for allowing various mobile devices and protocols to communicate with each other and to receive data from various information spaces. Interface devlets send and receive messages in respective protocols. Access infolets utilize respective access methods to provide an abstract view of various information spaces. Logic applets implement service and/or application logic by processing information from one or more infolets. A further component referred to as a let engine communicates with the devlets, infolets, and applets, and maintains user and device profile information to provide a flexible framework for the mobile device server that can readily support new devices and protocols.

Abstract: A system and method is provided for retrieving information on a network and displaying the information on a personal computer or other visual display device. A proxy multiplexor opens connections with each of a plurality of service providers and exchanges authentication information such as a user ID and password with each of the service providers by retrieving and forwarding cookies containing the authentication information. Updated status data from the service providers is displayed within icons representing each of the service providers.

Abstract: A method and a system in which a computing system transparently accesses resources connected to the Internet. A memory of the computing system contains an operating system, a cache associated with the operating system, a shared library and an access server. The shared library is responsive to a system call for a file by determining whether a path name for the file is located under a personal name space in the memory and by issuing a request for retrieving the file from an Internet resource based on the path name located under the personal name space when the file is not stored in the cache and has a path name located under the personal name space An access server, in response to the request from the shared library, selects an appropriate access protocol for retrieving the file from the Internet resource and retrieves the file from the Internet resource. The shared library then issues the system call to the operating system when the access server retrieves the file.

Abstract: Techniques for providing replicated files in a distributed system. A replicated file has a set of copies in components of the distributed system. Operations on the copies have the same semantics for the application processes accessing them as operations on a single copy of a file in a system where all processes execute on the same host. These semantics are achieved by means of a distributed synchronization system. Each replicated file has a read token and a write token. In order for an application process to perform an operation on a replicated file, the token required for the operation must be in the process's host and the process must have access to the token. Tokens are passed between hosts by token servers which respond to requests for tokens from application processes and from other token servers. The techniques are implemented using a library which replaces a standard I/O library, and may thus be employed without modification to hardware or the operating system.