Digi International Inc.

Google Inc.

Elliot Schwartz

Curtis M Allred

David Holzer

An Van Le

Kit Fitzpatrick

Ariel Ephraim Gilder

Andrea Maria Mazzario

John Maloney

David A Holzer

Curtis Allred

A method and apparatus for a connection manager have been disclosed. By providing for persistent connections with clients, the connection manager allows for servers to communicate with clients, which would otherwise be inaccessible.

Method and apparatus for a client connection manager

A first entity initiates a first connection to a second entity which then receives from the second entity initial information which the first entity uses to derive a key for the first entity (first entity key). The first entity key is then used to authenticate the second entity and if the second entity is authenticated then the first entity derives a second key which is used for communication between the first entity and the second entity.

Method and apparatus for key management for various device-server configurations

A computer implemented method of adjusting for varying delays in communication of a batch of actions uploaded for processing from a client application to a server application. The method includes receiving the batch of actions to be processed, the batch of actions including the actions, action time stamps, and an upload time stamp, generating a receipt time stamp for receipt of the batch, estimating times of occurrences of actions in the batch based on a base time and the action time stamps, and adjusting a process running on a server based on the estimated times. The base time is estimated by estimating when a first action in the batch occurred and, if a time between two adjacent actions in the batch exceeds a predefined limit, the base time is re-estimated by estimating when a second of the two adjacent actions occurred.

Server-side timing estimation of client-side actions

A lightweight end-to-end network architecture in which the transport layer is a Transmission Control Protocol (TCP) layer is disclosed. The network architecture also includes a Hyper Text Transport Protocol (HTTP) layer, a Messages over TCP (MT) protocol layer, a Message over Device-initiated HTTP (MDH) protocol layer, a multiplexing layer, and a facility layer. The MDH and MT layers are used in the alternative. The MT layer has a low overhead requirement. The MDH layer provides an enhanced firewall traversal capability.

Network architecture

A network comprising a server and a remote client including an input output pin is disclosed. The server and the client are connected through a Transmission Control Protocol (TCP) connection. The server controls the client input output pin, e.g., switches it on and off. The input output pin control instruction is transmitted from the server to the client. The control instruction is not stored in the client memory upon its execution.

Method and system to program programmable input output (PIO) pins via non-storage of a control message in a client

A method and apparatus for traversing a firewall are described.

Growing community of inventors

Sunnyvale, CA, United States of America

Elliot Schwartz