Media Features for Display, Print, and Fax (RFC2534)
Original Publication Date: 1999-Mar-01
Included in the Prior Art Database: 2019-Feb-11
Internet Society Requests For Comment (RFCs)
L. Masinter: AUTHOR [+3]
This specification defines some common media features for describing image resolution, size, color, and image representation methods that are common to web browsing, printing, and facsimile applications. [STANDARDS-TRACK]
Network Working Group L. Masinter Request for Comments: 2534 Xerox Corporation Category: Standards Track D. Wing Cisco Systems, Inc. A. Mutz Jutvision Corporation K. Holtman TUE March 1999
Media Features for Display, Print, and Fax
Status of this Memo
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (1999). All Rights Reserved.
This specification defines some common media features for describing image resolution, size, color, and image representation methods that are common to web browsing, printing, and facsimile applications. These features are registered for use within the framework of [REG].
This work was originally motivated by the requirements from web browsers to send the browser’s display characteristics to the web server to allow the server to choose an appropriate representation.
This specification defines some common media features [REG] by which a recipient may inform a sender as to the characteristics of its message handling. The sender may then provide the variant of the message that is most suitable for the recipient.
Different variants would typically be higher or lower resolution images (for example) as appropriate. In the case of a sending to a printer, the result would be higher quality output. In the case of a small screen device (cellphone, portable digital assistant), the result would be faster transmission.
Masinter, et al. Standards Track [Page 1]
RFC 2534 Media Features for Display, Print, and Fax March 1999
Media features may be used in many different protocol situations. Those defined in this specification can indicate the display or printer dimensions, resolution, color capability. The physical dimensions of a display may be inferred from the display size and display resolution. In the case of paper output, the paper size may be expressed as a token from a list of standard paper sizes. These are presented formally in the Notation section.
2. Media Feature Registrations
This section defines several media features, using the form specified in [REG].
2.1 Image Size
- Media Feature tag name(s):
- ASN.1 identifier associated with this feature tag:
- Summary of the media features indicated by this feature tag:
These features indicate the display size of the recipient for display or print, measured in pixels; they indicate horizontal (pix-x) and vertical (pix-y) dimensions.
- Values appropriate for use with this feature tag:
- The feature tag is intended primarily for use in the following applications, protocols, services, or negotiation mechanisms:
Display and print applications where different media choices w...