Client server symmetric presentation-layer connection protocol for network printing systems
US5867636A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Oct 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A printing system is provided for interfacing one or more session level protocols within the system to achieve an enhanced communications between the host computer and the network printer. A client server connection protocol (CSCP) facilitates this connectivity by providing a symmetric protocol for connections between servers and clients over connection-based stream-oriented protocols such as AppleTalk Data Stream Protocol (ADSP) and Transmission Control Protocol (TCP). CSCP resides in the presentation layer of the OSI seven-layer model and interfaces with one or more session level protocols. The dynamic port negotiation of CSCP facilitates concurrency for server applications by off-loading the port negotiation that would otherwise have to take place by the server and its clients. Thereby, CSCP allows the printing system to be easily extended and integrated with new protocol/ports as they are developed and introduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.