IEC 62919:2017

IEC 62919 ®
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Content management – Monitoring and management of personal digital content

Gestion de contenu – Suivi et gestion du contenu numérique personnel

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IEC 62919 ®
Edition 1.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Content management – Monitoring and management of personal digital content

Gestion de contenu – Suivi et gestion du contenu numérique personnel

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.040.99; 35.100.01 ISBN 978-2-8322-9342-3

– 2 – IEC 62919:2017 © IEC 2017

CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 Basic system structure . 8
4.1 View of digital content . 8
4.2 Consumption of digital content . 10
5 Requirements . 11
5.1 General . 11
5.2 Required functionalities. 11
5.2.1 Content devices . 11
5.2.2 Content information server. 11
5.2.3 Personal content monitoring device . 11
6 General measures for visualizing personal content . 12
6.1 Protocol . 12
6.2 Application layer . 12
6.2.1 General requirement . 12
6.2.2 HTML5 . 12
6.2.3 Improved view of my library . 12
7 Sending content information to servers or cloud . 13
7.1 General . 13
7.1.1 Content meta and base information . 13
7.1.2 Content meta information . 13
7.1.3 Content base information . 13
7.1.4 Content extension information . 14
7.2 Data format of content preservation information . 14
7.2.1 Basic structure content preservation information . 14
7.2.2 Entire content information . 19
7.2.3 Addition and deletion information for content on devices . 19
7.2.4 Modification information for content on devices. 20
7.2.5 Clear all . 21
7.3 Application-type dependent content information . 21
7.3.1 General . 21
7.3.2 Meta information . 21
8 Managing content information on servers or cloud . 22
8.1 Receiving content information from devices . 22
8.1.1 Receiving entire content information . 22
8.1.2 Receiving addition/deletion request on content information . 22
8.2 Saving content information . 22
8.3 Interface for extracting content information . 22
8.3.1 General . 22
8.3.2 Extract content information by user ID units . 23

8.3.3 Extract the summary data from content information . 23
9 Creating and sending HTML to browser . 23
Annex A (informative) Communication between content information servers and

monitoring clients . 24
Bibliography . 25

Figure 1 – Sending content preservation information to servers or cloud . 9
Figure 2 – Request for extracting content information . 9
Figure 3 – Request for viewing digital content . 10
Figure 4 – Consumption of digital content . 11
Figure 5 – Example of view of my library . 12
Figure 6 – Content preservation information . 18
Figure 7 – Entire content preservation information . 19
Figure 8 – Added content preservation information . 20
Figure 9 – Deleted content preservation information . 20
Figure 10 – Modified content preservation information . 21
Figure A.1 – Protocol . 24
Figure A.2 – Operating sequence . 24

Table 1 – Management table for application type . 14
Table 2 – List of meta_head_XXXX . 22

– 4 – IEC 62919:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONTENT MANAGEMENT –
MONITORING AND MANAGEMENT
OF PERSONAL DIGITAL CONTENT
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62919 has been prepared by technical area 8: Multimedia home
systems and applications for end-user network, of IEC technical committee 100: Audio, video
and multimedia systems and equipment.
The text of this International Standard is based on the following documents:
CDV Report on voting
100/2803/CDV 100/2924/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62919:2017 © IEC 2017
INTRODUCTION
Users have ICT devices on which they store various digital content, such as movies, photos,
music, e-books and documents. Since the capacity of each ICT device is getting larger and
online storage services are provided, digital content can be stored on a wide range of devices.
Users also create backup copies of digital content on multiple devices. That causes the
production of multiple generations of digital copies from an original and the digital content can
be put somewhere in any order. As a result, digital content goes into hiding and users can be
unaware of the location where the digital content is stored. Therefore, users have difficulties in
searching for and finding the digital content they want, or it takes a lot of time to find the content.
Since users may forget the provenance of the digital content saved on their devices, the
information to identify the distribution channel is helpful for the users.
Even if users can easily recognize digital content, its location or its directory on a specific device,
it is not enough to solve the difficulties.
This document specifies the method in which each device makes content preservation
information in the specified format and sends it to the server system. The operation enables the
visualization of all their digital content, which is separately stored on various devices, and an
easy way to find the desired content.
In addition, the central server, which gathers the content preservation information from many
users’ own devices, provides the interface to derive the summary from the gathered information.
By deriving users’ content preservation information, a service provider can analyse the users’
usage and preference information, and it helps launch new flexible digital content distribution
structures.
CONTENT MANAGEMENT –
MONITORING AND MANAGEMENT
OF PERSONAL DIGITAL CONTENT
1 Scope
This document specifies requirements, the protocol and the data format to visualize personal
content saved on the various devices, such as mobile phones, music players, personal
computers, hard disk recorders and e-book devices.
This document also specifies methods for gathering information of digital content saved on
personal devices and shared within a group, and to extract the gathered information by uniform
application interface.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
3.1 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:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
content preservation information
information on content that is preserved in a user's device
3.1.2
content information server
server which receives and stores content preservation information
3.1.3
personal content
digital content stored on user devices
Note 1 to entry: Personal content includes content that users purchase or create by themselves.
3.1.4
content device
user device where content is stored
3.1.5
device ID
identifier to specify a device

– 8 – IEC 62919:2017 © IEC 2017
3.1.6
user ID
identifier to specify the user in the system
3.1.7
family ID
identifier to specify a group where digital content can be shared
Note 1 to entry: Family ID is not necessarily used for a family group. It can be applied not only to a family, but also
to friends, colleagues and other groups.
3.1.8
my library
application viewer to monitor and manage all content that a user has on their own device
3.2 Abbreviated terms
API application programme interface
HTML HyperText Markup Language
HTTP Hypertext Transfer Protocol
JSON JavaScript Object Notation
RDB relational database
XMDF ever-eXtending Mobile Document Format
XML Extensible Markup Language
4 Basic system structure
4.1 View of digital content
Clause 4 shows the system behaviour and operations to visualize and monitor all digital content
that users have. The system behaviour and operations are listed as follows.
a) Each device sends out the content preservation information to the content information server,
which gathers the information on digital content saved on the device.
b) The content information server receives and stores the content preservation information.
The saved content preservation information can be extracted in user ID units.
Figure 1 shows the system behaviour on a) and b) in 4.1.

IEC
Figure 1 – Sending content preservation information
to servers or cloud
c) The content information server provides an interface that enables other servers to extract
content information in user ID units. The same or other servers can use the interface to
create the HTML format on my library and send it to the monitoring devices. The interface
also enables other servers and service providers to get, search and analyze users’ content
usage information or content preference information.
Figure 2 shows the interface on c) in 4.1.
IEC
Figure 2 – Request for extracting content information
d) The monitoring device requests the web server to send the information on my library, as
shown in Figure 3. The web server gets content preservation information via the interface
provided on content information server and creates the HTML format.

– 10 – IEC 62919:2017 © IEC 2017

IEC
Figure 3 – Request for viewing digital content
e) The web server distributes the information on my library to the monitoring devices in user ID
units.
f) If users acquire new digital content, the users’ content preservation information is changed.
In that case, the change is notified to the monitoring devices appropriately and the
monitoring devices render the change and modify its view.
g) The content information can be shared among other users in a group, such as a family, a
household or colleagues.
NOTE 4.1 d), e), f) and g) indicate the operations to distribute and render the content information on my library. They
are dependent on the implementation and improvement. Therefore, d), e), f) and g) are out of scope and described as
informative in this document.
4.2 Consumption of digital content
If users want to access or consume digital content from my library, the application sends a
request for content delivery to the content server or other devices. Its access methods can be
implemented over the existing, or new, technology.
Figure 4 shows an overview on how to consume digital content on my library.

IEC
Figure 4 – Consumption of digital content
5 Requirements
5.1 General
Users register their user IDs and their devices with a central server or a cloud server. User ID
and device ID are used for the communication between the server and the client's device.
5.2 Required functionalities
5.2.1 Content devices
A content device creates content preservation information by reading out necessary data in
content format and sends it out to the content information server.
When the content preservation condition is changed on the content devices, the content devices
send out the modification information to the server. That enables my library to display the latest
condition of the stored content.
5.2.2 Content information server
Content information servers provide APIs by which other servers can retrieve content usage
information, users’ preference information and users’ attribute information by user units. The
content information server cooperates with online storage services when the users wish to
consume digital content.
Content information servers can manage and implement users’ access control based not only on
user IDs, but also on family IDs.
5.2.3 Personal content monitoring device
When users modify the view structure or arrangement of my library on the monitoring devices,
the monitoring devices save the customized change information or upload it to the content
information server.
– 12 – IEC 62919:2017 © IEC 2017
6 General measures for visualizing personal content
6.1 Protocol
In this document, it is expected that a web browser can be the application of my library for
visualizing personal content. The HTTP or HTTPS protocol is used to communicate from content
devices to the content information server as shown in Figure A.1. Since the HTTP or HTTPS
protocol is used for internet browsing, users do not need to change the port setting on their
broadband routers or their gateway routers in their home and domains.
6.2 Application layer
6.2.1 General requirement
Users would like to sort or rearrange content icons on my library by drag and drop operations,
such as operations on actual bookshelves. Addition, modification and deletion of content saved
on the devices should be notified to the client (visualization application) in asynchronous
communication.
In addition, the client devices to visualize personal content should display the content
preservation information, even if it is offline.
Figure 5 shows an example of the personal content view of my library.
IEC
Figure 5 – Example of view of my library
6.2.2 HTML5
It is expected that the HTML5 protocol be used for visualizing personal content because objects
on web browsers can be moved by drag and drop, and it can implement asynchronous
communication. The application using HTML5’s local storage can work offline once the
application receives the list of personal content.
6.2.3 Improved view of my library
If there is the same content on different content devices, the view application may indicate the
presence of copies in some way, such as different colours or balloons on icons.

7 Sending content information to servers or cloud
7.1 General
7.1.1 Content meta and base information
Content preservation information, which each device sends to the content information server,
includes the items listed in 7.1.2 and 7.1.3.
7.1.2 Content meta information
Content meta information includes the items listed as follows:
• method,
• device ID/device name,
• user ID,
• family ID,
• content ID, and
• sub-content ID (global ID identified in content distribution market).
After the content preservation information is stored in the content information server, family ID
can be settled on the server system. For instance, users access a website on the server system,
they select a family ID from the candidates to confirm a group for content sharing. Family ID is an
identifier that can be applied to not only a family, but also friends, colleagues and other groups.
When a device is registered in the system, the user can add its device name to the system. A
name-resolving server runs in the cloud system and manages the table between the device ID
and the device name. The correspondence between the device ID and the device name helps
name resolving in the system, as needed.
Content IDs may consist of two IDs that are a content ID and a sub-content ID. The sub-content
ID is the identifier allocated globally in the content distribution market. The server in the cloud
system can derive the content metadata from the sub-content ID. The derivation or reference
operations between the sub-content ID and the content metadata will be conducted only on the
server side.
7.1.3 Content base information
Content base information includes the items listed as follows:
• filename,
• filepath,
• application type,
• create time,
• size, and
• title.
An application type that is registered in RFC6838 as a media type can be used to launch the
correct program to consume digital content. Application types are regarded as classification of
application programs that work on devices. When the content information server receives the
content preservation information including the application type, the server saves the data as
shown in Table 1.
– 14 – IEC 62919:2017 © IEC 2017
Table 1 – Management table for application type
Application type File extension Application program
audio/mpeg .mp3 Audio player
audio/aac .m4a
audio/ogg .ogg
audio/midi .mid .midi
audio/vnd.rn-realaudio .ra
audio/wav .wav
video/mpeg .mpg .mpeg Video player
video/mp4 .mp4
video/webm .webm
video/ogg .ogv
video/quicktime .mov .qt
video/avi, video/msvideo, .avi
video/x-msvideo
video/x-ms-asf .asf .wma .wmv
Application/x-shockwave-flash .swf
image/gif .gif Image viewer
Image/jpeg .jpg .jpeg
image/png .png
application/pdf .pdf E-book viewer
application/epub+zip .epub
When users wish to consume the digital content on their own devices, the information server can
decide which devices are capable of opening the content by referring to Table 1.
7.1.4 Content extension information
Content extension information includes the items listed as follows:
• meta_body,
• meta_head_XXXX, and
• meta_vendor_ZZZZ.
These items are described in 8.3.
7.2 Data format of content preservation information
7.2.1 Basic structure content preservation information
Users’ devices put the content preservation information in the XML format indicated in Figure 6
and send it to the content information server. A device ID shown in Figure 6 is identical to the
sender device ID. The device can put content information in a tag, which begins
with and ends with . The structure of the tag,
which begins with and ends with , is dependent on the
application types. The structure of the tag is described in 7.3.


























– 16 – IEC 62919:2017 © IEC 2017





















































– 18 – IEC 62919:2017 © IEC 2017




register_all
bcdefg
abcdef 
ABCDEF


sample.mp3
 audio/mpeg
YYYY-HH-MMThh:mm:ssTZD
12345



4944330300000000102B545045310000000800000095BD88E48C980054495432
0000000C00000093B582F082C682B682C40054414C420000000F000000323030
34204245535420313030005452434B000000050000003030310054434F4E0000
00060000004A506F7000545945520000000600000032303034





:


< content_info contentID=”XXXX345”>

:



Figure 6 – Content preservation information

Users may purchase new content on content distribution services, remove it from their devices,
or update content saved on their devices. Therefore, users’ devices can request the content
information server to add, delete and modify the content preservation information stored on the
server. The tag in Figure 7 shows the requested method on how to handle the
content preservation information in the content information server after the server receives it.
Each method request (register_all, register, delete, modify, clear_all) from content devices to
the content server is described in 7.2.2, 7.2.3, 7.2.4 and 7.2.5.
7.2.2 Entire content information
Content devices can request the content information server to replace the current content
preservation information saved on the server with the latest content preservation information. In
that case, the content device sets the request method as in content preservation
information and sends it to the content information server. When receiving the content
preservation information, the content information server deletes the users’ old content
preservation information identified by user ID and newly adds the received and latest content
preservation information. Therefore, when the method is designated, all the
content preservation information that is related with the device ID is removed once from the
server.


register_all
  

  


Figure 7 – Entire content preservation information
7.2.3 Addition and deletion information for content on devices
7.2.3.1 General
The methods described in 7.2.3 should be applied for requesting the content information server
to add or delete content preservation information on a device. For example, there are cases
where content is added, newly purchased or deleted on a device. If the content itself is added or
deleted in devices, 7.2.3.2 or 7.2.3.3 shall be applied.
7.2.3.2 Addition request to servers
When users purchase or get new content, it can be stored on their devices. In that case, the
devices need to make a request to the content information server to add the preservation
information of the newly saved content. The data format that the devices send to the server is
given in Figure 8. An outline of an operating sequence is shown in Figure A.2.

– 20 – IEC 62919:2017 © IEC 2017


register
  



Figure 8 – Added content preservation information
7.2.3.3 Deletion request to servers
When users delete content, it is removed from their devices. In that case, the devices need to
make a request to the content information server to delete the preservation information of the
content. The data format that the devices send to the server is given in Figure 9.


delete
  



Figure 9 – Deleted content preservation information
7.2.4 Modification information for content on devices
7.2.4.1 General
The methods described in 7.2.4 should be applied for making a request to the content
information server to modify content preservation information on a device. For example, there
are cases where content is revised or its attribute is changed on a device.
7.2.4.2 Modification request on updated content
When users revise or edit content, the associated information can be changed on their devices.
In that case, the devices need to make a request to the content information server to modify the
preservation information of the content. The data format that the devices send to the server is
given in Figure 10.


modify
  



Figure 10 – Modified content preservation information
7.2.5 Clear all
The methods described in 7.2.5 should be applied for making a request to the content
information server to delete all content preservation information on a device. For example, there
are cases where the device is replaced with a new one or the device is initialized. Content
preservation information associated with the device ID will be deleted on the content information
server.
7.3 Application-type dependent content information
7.3.1 General
The tag in content preservation information is described in 7.3. The tag
is dependent on application-type in the tag . The basic
structure of content preservation information is made in accordance with 7.2.1.
The tag may include meta information such as the tag,
tag and/or tag.
7.3.2 Meta information
A tag can be used to include a meta information of a content. A device defines
meta_body according to application_type. As an example, the ID3 tag of an MP3 audio file
becomes meta_body. If meta_body cannot be defined by a device, the device may define fixed
length data from the beginning as meta_head_XXXX instead of meta_body. Table 2 shows the
list of meta_head_XXXX.
– 22 – IEC 62919:2017 © IEC 2017
Table 2 – List of meta_head_XXXX
Data length Tag name
1 KByte meta_head_1KB
2 KByte meta_head_2KB
4 KByte meta_head_4KB
8 KByte meta_head_8KB
16 KByte meta_head_16KB
32 KByte meta_head_32KB
64KByte meta_head_64KB
A meta_vendor_ZZZZ can be used to include vendor-unique meta information of a piece of
content. The ZZZZ portion may be named freely, but the same name is desirable if there is
compatibility of meta information of a content.
8 Managing content information on servers or cloud
8.1 Receiving content information from devices
8.1.1 Receiving entire content information
The content information server shall delete all content preservation information on device ID and
store the content preservation information it received.
8.1.2 Receiving addition/deletion request on content information
8.1.2.1 Addition
When the content information server receives an addition request of content preservation
information, it shall add the content information into the present content preservation
information on the device ID.
8.1.2.2 Deletion
When the content information server receives a deletion request of content preservation
information, it shall delete the content information from the present content preservation
information on the device ID.
8.1.2.3 Modification
When the content information server receives a modification request of content preservation
information, it shall modify the present content preservation information with the received
content information on the device ID.
8.2 Saving content information
In order to store content preservation information on the content information server, there is a
number of ways, such as RDB, XML, JSON, KVS, and so on.
8.3 Interface for extracting content information
8.3.1 General
The content information server shall provide the interface that enables other service prov
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