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Browse Prior Art Database

UCL facsimile system (RFC0809)

IP.com Disclosure Number: IPCOM000003858D
Original Publication Date: 1982-Feb-01
Included in the Prior Art Database: 2000-Sep-13

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

T. Chang: AUTHOR

Abstract

The object of a facsimile system is to reproduce faithfully a document or image from one piece of paper onto another piece of paper sited remotely from the first one. Up to now, the main method of facsimile communication has been via the telephone network. Most facsimile machines permit neither the storage of image page nor their modification before transmission. With such machines, it is almost impossible to communicate between different makes of facsimile machines. In this respect, facsimile machines fall behind other electronic communication services.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 2% of the total text.

INDRA Note 1185 INDRA

Feb. 1982 Working

Paper

RFC 809

UCL FACSIMILE SYSTEM

Tawei Chang

ABSTRACT: This note describes the features of

the computerised facsimile system

developed in the Department of

Computer Science at UCL. First its

functions are considered and the

related experimental work are

reported. Then the disciplines for

system design are discussed.

Finally, the implementation of the

system are described, while detailed

description are given as appendices.

Department of Computer Science

University College, London

NOTE: Figures 5 and 6 may be obtained by sending a request to

Ann Westine at USC-Information Sciences Institute, 4676 Admiralty

Way, Marina del Rey, California, 90291 (or WESTINE@ISIF) including

your name and postal mailing address. Please mention that you are

requesting figures 5 and 6 from RFC 809.

OR: You can obtain these two figures online from the files

RFC809a.FAX and RFC809b.FAX

from the SRI-NIC online library. These files are in the format

described in RFC 769.

UCL FACSIMILE SYSTEM INDRA Note 1185

Contents

1. INTRODUCTION...........................................1

2. SYSTEM FUNCTIONS.......................................2

2.1 Communication......................................4

2.2 Interworking with Other Equipment..................8

2.2.1 Facsimile machines............................8

2.2.2 Output Devices................................9

2.3 Image Enhancement..................................11

2.4 Image Editing......................................15

2.5 Integration with Other Data Types..................16

3. SYSTEM ARCHITECTURE....................................17

3.1 System Requirements................................17

3.2 Hierarchical Model.................................19

3.3 Clean and Simple Interface.........................20

3.3.1 Principles....................................21

3.3.2 Synchronisation and Desynchronisation.........21

3.3.3 Data Transfer.................................22

3.4 Control and Organisation of the Tasks.................