Information technology — User interface guidelines on menu navigation — Part 2: Navigation with 4-direction devices

This document gives guidelines on the design of navigation methods for selection menus with the use of a 4-direction device. The guidelines are applicable to any information equipment on which the display area is associated with a 4-direction device. This document also provides recommendations for parameters for display screen settings, character sets and languages in use. This document is not applicable to safety-related uses on menu navigation.

Technologies de l'information — Directives sur la navigation dans les menus d'interfaces utilisateurs — Partie 2: Navigation avec des commandes quadridirectionnelles

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Status
Published
Publication Date
16-Feb-2020
Current Stage
6060 - International Standard published
Start Date
17-Feb-2020
Completion Date
17-Feb-2020
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INTERNATIONAL ISO/IEC
STANDARD 17549-2
Second edition
2020-02
Information technology — User
interface guidelines on menu
navigation —
Part 2:
Navigation with 4-direction devices
Technologies de l'information — Directives sur la navigation dans les
menus d'interfaces utilisateurs —
Partie 2: Navigation avec des commandes quadridirectionnelles
Reference number
ISO/IEC 17549-2:2020(E)
ISO/IEC 2020
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ISO/IEC 17549-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO/IEC 2020 – All rights reserved
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ISO/IEC 17549-2:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Conformity .................................................................................................................................................................................................................. 2

5 Basic considerations ......................................................................................................................................................................................... 2

5.1 Common and general ergonomic aspects ........................................................................................................................ 2

5.2 Designing rendering (display screen, audio display, tactile display) ....................................................... 4

5.2.1 Visual design of ladder menu ................................................................................................................................ 4

5.2.2 Visual designing of tile menu ................................................................................................................................ 4

6 Recommended practice on structure of, and operation of, ladder menus ...............................................4

6.1 Ladder structure .................................................................................................................................................................................... 4

6.2 Recommended types of operation of the ladder menus for the hierarchy ......................................... 5

7 Recommended practices on structure of and operation of tile menus ........................................................7

7.1 Structure of tile menus ..................................................................................................................................................................... 7

7.2 Navigation for selecting tile menus ....................................................................................................................................... 7

7.3 Recommended types of operation of the tile menus for the hierarchy .................................................. 8

Annex A (informative) Advantages and disadvantages depending on navigation types .............................10

Bibliography .............................................................................................................................................................................................................................12

© ISO/IEC 2020 – All rights reserved iii
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ISO/IEC 17549-2:2020(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that

are members of ISO or IEC participate in the development of International Standards through

technical committees established by the respective organization to deal with particular fields of

technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other

international organizations, governmental and non-governmental, in liaison with ISO and IEC, also

take part in the work.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for

the different types of document should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject

of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent

rights. Details of any patent rights identified during the development of the document will be in the

Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents) or the IEC

list of patent declarations received (see http:// patents .iec .ch).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 35, User interfaces.

This second edition cancels and replaces the first edition (ISO/IEC 17549-2:2015), of which it constitutes

a minor revision.
The main changes compared to the previous edition are as follows:
— in Figures 2, 3, and 4 supplementary explanations have been moved into notes;

— the alternative text for all figures has been included as alternative text in the PDF rather than

provided in notes beneath the figures;
— an editorial error in Table 2 has been corrected;
— Annex B (informative), which was erroneously included, has been deleted;

— ISO/IEC Guide 37 and IEC 82079-1 have been moved from Clause 2 to the Bibliography as they are

not cited normatively in the text;

— minor editorial corrections have been made throughout the document to fully align with ISO/IEC

Directives.
A list of all parts in the ISO/IEC 17549 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO/IEC 2020 – All rights reserved
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ISO/IEC 17549-2:2020(E)
Introduction

Contemporary information equipment, on which the display area is associated with 4-direction devices,

includes sophisticated and complex functionalities within one piece of such equipment.

The equipment needs to be operated in terms of changing default settings and to be customized for

the individual user. In such a scenario, a 4-direction device is used to navigate the menu shown in the

display area, where the menus are normally structured.

This document provides guidelines for the design and use of menu structures, as well as recommended

types of navigation with 4-direction devices.

Note that each figure in this document, although it is not always an "image", includes the alternative

text(s) in accordance with ISO/IEC/TS 20071-11. The alternative text(s) are informative only.

© ISO/IEC 2020 – All rights reserved v
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INTERNATIONAL STANDARD ISO/IEC 17549-2:2020(E)
Information technology — User interface guidelines on
menu navigation —
Part 2:
Navigation with 4-direction devices
1 Scope

This document gives guidelines on the design of navigation methods for selection menus with the use of

a 4-direction device. The guidelines are applicable to any information equipment on which the display

area is associated with a 4-direction device.

This document also provides recommendations for parameters for display screen settings, character

sets and languages in use.
This document is not applicable to safety-related uses on menu navigation.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 1503, Spatial orientation and direction of movement — Ergonomic requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
4-direction device

set of physical controls, commonly keys, only one of which is activated at any time, consisting of up-,

down-, left- and right controls for respective functionality

Note 1 to entry: The 4-direction device is a mechanism directly manipulated by users, for example, a cross-key of

a remote controller.
3.2
ladder menu

list of items displayed vertically in one dimension, one of which is to be selected

3.3
menu bar

set of one dimensional menu items that is always standing-by at the root of a menu hierarchy

Note 1 to entry: A menu bar provides tabular functionality and it is different from a “rolling menu”.

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ISO/IEC 17549-2:2020(E)
3.4
focus

<4-direction devices> highlighted result of action done by a user through an input device

Note 1 to entry: If the number of keys used is one, the action is “next”. If the number of keys used is two, the

actions are “previous” and “next”. Selecting a key enables highlighting of the next item visually, auditorily, and/or

tactually to show the action can be activated.
3.5
activating

action done by a user through a validation key, which enables activation of a focus or an item pointed at

3.6
navigation history feedback

visual, tactile and/or audio interface output displayed after a user navigation, which enables a user to

know the paths he has already explored

Note 1 to entry: For example, items already explored are highlighted in a different colour if the user already

navigated to there.
3.7
separator bar

visual, tactile and/or audio interface output that is rendered in order to facilitate recognition of groups

of items categorizations or the start or end of a list
3.8
sub-menu indicator

visual, tactile and/or audio interface output that is rendered in order to facilitate navigation when a sub-

list of items is available and which enables user to know if they are dealing with a navigation item or not

3.9
tile menu

set of items displayed with a number of rows and columns, one of which is to be selected

4 Conformity

A navigation method conforms to this document if it meets all requirements of 5.1, 5.2.2, and 7.1.

5 Basic considerations
5.1 Common and general ergonomic aspects

The following basic ergonomic aspects are taken into account when designing user interfaces where

navigation with a 4-direction device is considered:

a) users should be able to change menu languages at the highest level of the menu hierarchy;

b) control shall be consistent both in design and operation, including meeting the requirements in

ISO 1503;

c) menu items should be in plain texts or comprehensible icons as far as applicable, and in agreement

with the relevant provisions in ISO/IEC Guide 37 and IEC/IEEE 82079-1;

d) control shall be bi-directional and enable the user to return to the previous operation;

e) clear feedback should be given when the user is at the end of the list and when they are at the start,

and the end and start feedback should be different;
f) for broad and deep menu lists, navigation history feedback shall be provided;
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ISO/IEC 17549-2:2020(E)

g) important and most frequently-used menu items should be simple and comprehensible, and placed

at the start of the list;

h) a ladder menu including an item that should logically be first selected by a user should be short and

such a menu item shall be placed as the first item in the list;

i) in the case where a substantial number of options is required for an item of a ladder menu, the most

frequently selected option should be the default option;

j) item categorisation that depends on functionality should be shown to the user (by separation bars,

sounds, etc.); a sub-menu should present a title semantically linked to the upper-menu and, as far as

possible, all the cascading hierarchy should be shown to the user;

k) the user interface should make a clear separation between navigation functions (browsing between

items without any modification) and action functions (implying system modification such as adding

something, deleting something, calling someone, activating something, etc.); consequently, items

for navigation should be displayed differently from items for action;

l) where possible, hierarchies shall be organized to be broader rather than deeper; it has been

shown that a two-level hierarchical menu (32 items at the first level and 16 for each sub-level) is

better than a three-level hierarchical menu (8 × 8 × 8); moreover that 32 × 16 is better than 16 × 32;

m) a list longer than three items should enable wraparound manipulation;
EXAMPLE Scrolling beyond the end of the list should return to or render the beg
...

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