Patent · US Expired

System and method for transmitting data via data networks with data conversion by a COM automatic marshaller

US7519571B2 · kind B2 · utility

0Cited by

9References

22Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Thomas Michael Bauer · Madison, US
Roland Heymann · Erlangen, DE
Heinz-Christoph Schmolka · Graben-Neudorf, DE
Marcus Sebald · Erlangen, DE
Thomas Talanis · Heroldsbach, DE
Frank Volkmann · Amberg, DE

Key dates

Filing date	Jul 27, 2001
Grant date	Apr 14, 2009
Priority date	—
Expiry date	Jan 16, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/02
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A system and a method of transmitting data via data networks. A bi-directional data connection is created even behind firewalls, including from a client not visible to a server in the Internet. In the method and system, a first connection request for establishing a first transmission channel is sent to a server of an automation system from a first data processing device of a client via a data connection. This request is answered by the server via a second transmission channel. The data connection is kept permanently open, thereby allowing mutually time-independent bi-directional sending and receiving of data between the client and the server, via at least one data network. A COM automatic marshaller which incorporates itself into the communications chain between the client and the server is provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.