Browse Prior Art Database

Dynamic Identification of Cascaded Intermediate Devices

IP.com Disclosure Number: IPCOM000105255D
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Honensee, RH: AUTHOR [+2]

Abstract

In an Intelligent Printer Data Stream (IPDS*) environment, printer commands and print data are sent from the host Print Services Facility (PSF) program to the printer using self-defining structured fields. Similarly, information describing printer capabilities and printer identification is sent from the printer to the host using self-defining structured fields. In particular, the printer responds to the Sense Type and Model (STM) command with general device information such as the level of IPDS function support, and to the Execute Order Homestate- Obtain Printer Characteristics (XOH-OPC) command with detailed information such as available features, printer resolution, and physical media characteristics.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 61% of the total text.

Dynamic Identification of Cascaded Intermediate Devices

      In an Intelligent Printer Data Stream (IPDS*) environment,
printer commands and print data are sent from the host Print Services
Facility (PSF) program to the printer using self-defining structured
fields.  Similarly, information describing printer capabilities and
printer identification is sent from the printer to the host using
self-defining structured fields.  In particular, the printer responds
to the Sense Type and Model (STM) command with general device
information such as the level of IPDS function support, and to the
Execute Order Homestate- Obtain Printer Characteristics (XOH-OPC)
command with detailed information such as available features, printer
resolution, and physical media characteristics.

      The host-to-printer configuration may include one or more IPDS
intermediate devices that act on the data stream, such as the Remote
Print Manager (RPM) product, which can cache printer-bound resources
or spool printer-bound data streams.  Information describing the
presence, identity, and capabilities of these devices needs to be
made available to the host.

      This disclosure provides a method by which IPDS intermediate
devices can provide information regarding their identity,
capabilities, and interface position without requiring the overhead
and complexity of separate host-to-intermediate device dialogues.  It
allows intermediate devices to provide this information by
dynamically mod...