IEC 62779-3:2016

Semiconductor devices - Semiconductor interface for human body communication - Part 3: Functional type and its operational conditions

IEC 62779-3:2016 defines a functional type of a semiconductor interface for human body communication (HBC). This part includes the categorization of the interface for HBC according to the contact condition; and performance parameters characterizing the interface of each category.

Dispositifs à semiconducteurs - Interface à semiconducteurs pour les communications via le corps humain - Partie 3: Type fonctionnel et ses conditions d'utilisation

L'IEC 62779-3:2016 définit un type fonctionnel d'une interface à semiconducteurs utilisée pour les communications via le corps humain (HBC). La présente partie comprend la catégorisation de l'interface pour les communications via le corps humain selon les conditions de contact ainsi que les paramètres de performance qui caractérisent l'interface de chaque catégorie.

General Information

• Status: Published
• Publication Date: 25-Apr-2016
• ICS: 31.080.01 - Semiconductor devices in general
• Technical Committee: TC 47 - Semiconductor devices
• Drafting Committee: WG 6 - TC 47/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 26-Apr-2016
• Completion Date: 31-May-2016

Standards Content (Sample)

IEC 62779-3 ®
Edition 1.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Semiconductor devices – Semiconductor interface for human body
communication –
Part 3: Functional type and its operational conditions

Dispositifs à semiconducteurs – Interface à semiconducteurs pour les
communications via le corps humain –
Partie 3: Type fonctionnel et ses conditions d’utilisation

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IEC 62779-3 ®
Edition 1.0 2016-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Semiconductor devices – Semiconductor interface for human body

communication –
Part 3: Functional type and its operational conditions

Dispositifs à semiconducteurs – Interface à semiconducteurs pour les

communications via le corps humain –

Partie 3: Type fonctionnel et ses conditions d’utilisation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.080.01 ISBN 978-2-8322-3298-9

– 2 – IEC 62779-3:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 6
3.1 Interface type . 7
3.2 Detection of HBC interface . 7
3.3 Electromagnetic field coupling . 7
3.4 Essential rating and characteristics. 7
3.4.1 Signal transmission . 7
3.4.2 Signal radiation . 8
3.5 Other terms and definitions . 8
4 Interface type . 9
4.1 General specifications . 9
4.1.1 Function . 9
4.1.2 Implementation . 10
4.1.3 Compatibility . 10
4.2 Electrical specifications . 10
4.2.1 Coupling specifications . 10
4.2.2 Directional specifications . 10
4.2.3 Transient specifications . 11
4.3 Limiting values . 11
4.3.1 Details to be stated . 11
4.3.2 Electrical limiting values . 11
4.3.3 Temperatures . 11
4.3.4 Humidity . 11
Bibliography . 12

Figure 1 – HBC interfaces . 6
Figure 2 – Block diagram of interface . 9

Table 1 – Coupling specifications of a HBC interface . 10
Table 2 – Direction specifications of a HBC interface . 11
Table 3 – Transient specifications of a HBC electrode . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SEMICONDUCTOR DEVICES –
SEMICONDUCTOR INTERFACE FOR HUMAN BODY COMMUNICATION –

Part 3: Functional type and its operational conditions

FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62779-3 has been prepared by IEC technical committee 47:
Semiconductor devices.
The text of this standard is based on the following documents:
FDIS Report on voting
47/2282/FDIS 47/2292/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62779-3:2016 © IEC 2016
A list of all parts in the IEC 62779 series, published under the general title Semiconductor
devices – Semiconductor interface for human body communication, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication 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.
INTRODUCTION
The IEC 62779 series is composed of three parts as follows:
• IEC 62779-1 defines general requirements of a semiconductor interface for human body
communication. It includes general and functional specifications of the interface.
• IEC 62779-2 defines a measurement method on electrical performances of an electrode
that constructs a semiconductor interface for human body communication.
• IEC 62779-3 defines functional type of a semiconductor interface for human body
communication, and operational conditions of the interface.
IEC 60748-4 gives requirements on interface integrated circuits for semiconductor devices.
Especially, Chapter III, Section 7 in this standard is applied to interface circuits for a
communication network using a general channel, such as wire or wireless. However, a
channel for HBC is the human body whose channel properties, such as signal loss and delay
profile, are different from the general channel, so the Chapter III, Section 7 cannot be applied
to an interface for HBC. Furthermore, a standard on a communication protocol for body area
network (BAN) − IEEE 802.15.6 (IEEE Std 802.15.6-2012), which includes a communication
protocol for HBC was published in 2012. A common interface for HBC should be defined to
secure communication compatibility between various devices that are implemented on/inside
the human body or embedded in peripheral equipments.

– 6 – IEC 62779-3:2016 © IEC 2016
SEMICONDUCTOR DEVICES –
SEMICONDUCTOR INTERFACE FOR HUMAN BODY COMMUNICATION –

Part 3: Functional type and its operational conditions

1 Scope
This part of IEC 62779 series defines a functional type of a semiconductor interface for
human body communication (HBC). An interface for HBC includes an electrode that is
physical structure to transmit a data signal to the human body or receive a transmitted data
signal from the body. An electrode directly contacts with the human body in many cases, but it
cannot maintain the contact condition when an object, such as clothes, exists between the
interface and the body or a near field communication is required; hence, depending on the
contact condition, an interface for HBC can be categorized into a contact and non-contact
type as shown in Figure 1. This part includes the categorization of the interface for HBC
according to the contact condition; and performance parameters characterizing the interface
of each category.
Interface
Electrode
Interface
Weak electric field
Electrode
Strong electric field
Human body Human body
IEC IEC
a) contact type b) non-contact type
Key
Human Body Human body of a user using HBC Electrode Physical structure to transmit an
electrical signal to the human body
or receive a signal from the human
body
Figure 1 – HBC interfaces
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
None.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

3.1 Interface type
3.1.1
contact-type HBC interface
HBC interface whose electrode has a physical contact with the human body
Note 1 to entry: A contact-type HBC interface generates a strong electromagnetic field which is coupled with the
human body through an electrode because a physical contact by an electrode causes a decrease in load
impedance of the interface and an increase in output current accordingly.
Note 2 to entry: This note applies to the French language only.
3.1.2
noncontact-type HBC interface
HBC interface whose electrode does not have a physical contact with the human body
Note 1 to entry: Unlike a contact-type HBC interface, a noncontact-type HBC interface generates a weak
electromagnetic field through the electrode, in which the field is coupled with the human body through an electrode
and an object located between the human body and an electrode.
Note 2 to entry: This note applies to the French language only.
3.2 Detection of HBC interface
3.2.1
contact detection
detection process that determines whether an electrode has a physical contact with the
human body or not in the case of a contact-type HBC interface
3.2.2
proximity detection
detection process that determines whether an electrode is within a specific distance from the
human body or not in the case of a noncontact-type HBC interface
3.3 Electromagnetic field coupling
3.3.1
field coupling
coupling with the human body of an electromagnetic field generated from a HBC interface
Note 1 to entry: Depending on a frequency of a signal to be transmitted or received, an electric or magnetic field
is involved in the field coupling.
3.3.2
directional coupling
field coupling whose amount is dependent on the coupling direction from an electrode to the
human body
3.3.3
non-directional coupling
field coupling whose amount is independent on the coupling direction from an electrode to the
human body
3.4 Essential rating and characteristics
3.4.1 Signal transmission
3.4.1.1
coupling loss
L
coupling
signal loss caused by an electrode of a HBC interface

– 8 – IEC 62779-3:2016 © IEC 2016
Note 1 to entry: In the case of a directional coupling, a coupling loss is dependent on a coupling direction from
the electrode to the human body; however, a coupling loss is a constant irrespective of a coupling direction in the
case of a non-directional field coupling.
Note 2 to entry: A coupling loss is represented with a voltage or power ratio.
3.4.1.2
coupling efficiency
E
coupling
transmission efficiency caused by an electrode of a HBC interface
Note 1 to entry: A transmission efficiency can be obtained by converting a dB scale of a coupling loss into a %
scale.
3.4.1.3
coupling conductance
G
coupling
conductance component in a field coupling that corresponds to a magnitude value of the
coupling loss
3.4.1.4
coupling capacitance
C
coupling
capacitance component in a field coupling that corresponds to a phase value of the coupling
loss
3.4.1.5
coupling bandwidth
BW
coupling
frequency range over which a coupling loss is equal to or less than a specific value
Note 1 to entry: The specific value is usually determined larger by 3 dB from a minimum coupling loss.
3.4.2 Signal radiation
3.4.2.1
coupling distance
D
coupling
physical distance between the human body and a HBC interface at which the coupling loss is
equal to or less than a specific value
Note 1 to entry: The specific value is determined to satisfy a proper sensitivity level of a HBC interface.
Note 2 to entry: The coupling distance is defined only for a noncontact-type interface.
3.4.2.2
directivity
DIR
coupling
range of direction in angle or distance at which a coupling loss is equal to or less than a
specific value in the case of a directional coupling
Note 1 to entry: The specific value is determined to satisfy a proper sensitivity level of a HBC interface.
3.5 Other terms and definitions
3.5.1
load impedance
Z
load
impedance seen by a HBC interface in a direction from an electrode towards the human body
Note 1 to entry: In the case of a noncontact-type interface, the load impedance includes an impedance by an
object between the human body and a HBC interface.

3.5.2
detection time
T
detection
minimum required time to detect a physical contact or proximity of an electrode
4 Interface type
4.1 General specifications
4.1.1 Function
4.1.1.1 Category
If a HBC interface has a different category, a contact or non-contact type, according to a
contact condition, the condition and type of contact should be provided.
4.1.1.2 Functional description
An interface for HBC is a device to transmit a data signal to the human body or receive a
transmitted data signal from the body. If applicable, differences in functions of each interface
type shall be given.
4.1.1.3 Block diagram
Interface’s overall structure shall be given. Details of the structure shall be given using a
block diagram as presented in Figure 2 below.
Comparator CDR
Elect HBC
Human
Powerline Signal High-Pass
rode Modem
Body
Noise Amplifier Filter
Reduction
Filter
IEC
Key
Human Body Human body of a user using HBC Electrode Physical structure to transmit an
electrical signal to the human body
or receive a signal from the human
body
Powerline Circuit to remove a noise signal Signal Amplifier Circuit to amplify a receiving signal
Noise generated from a powerline in a
Reduction narrow frequency-band
Filter
High Pass Circuit to remove a noise signal in Comparator Circuit to transform an analog
Filter a wide frequency-band signal into a digital signal
CDR Clock-data-recovery circuit to HBC Modem Circuit to modulate and demodulate
remove jitter in a digital signal a data signal
Figure 2 – Block diagram of interface
NOTE 1 The powerline noise reduction filter can be removed if the power of the noise signal is not high enough to
saturate the active components in the interface.

– 10 – IEC 62779-3:2016 © IEC 2016
NOTE 2 Order of the components in the interface can be changed.
If applicable, a functional part for contact or proximity detection shall be defined in a block
diagram. Also, control signals to support a detection process should be defined.
4.1.2 Implementation
4.1.2.1 Interface Package
Package type, for example ceramic, plastic or glass, shall be given. If applicable, IEC and/or
national reference number of the outline drawing shall be stated.
4.1.2.2 Electrode
4.1.2.2.1 Electrode appearance
Material properties with respect to an electrode and electrode’s physical dimensions shall be
stated.
4.1.2.2.2 Electrode location
The position of the electrode to be implemented in a HBC interface shall be given. Details on
the position, such as distances from a reference point in a HBC interface, shall be included.
If applicable, the position where an electrode shall not be implemented shall be stated.
4.1.3 Compatibility
Compatibility between interfaces having a different type shall be stated.
If applicable, required conditions to achieve compatibility should be given.
4.2 Electrical specifications
4.2.1 Coupling specifications
Coupling specifications of a HBC interface shall be given as shown in Table 1 below.
Table 1 – Coupling specifications of a HBC interface
Value
Specification Symbol Unit
Min. Typ. Max.
L
Coupling loss  dB
coupling
Coupling efficiency E  %
coupling
Coupling conductance G  S
coupling
Coupling capacitance C  F
coupling
Coupling bandwidth BW  Hz
coupling
Coupling distance D  M
coupling
Load impedance Z  Ω
load
Detection time T  s
detection
4.2.2 Directional specifications
Direction specifications of a HBC interface shall be given as shown in Table 2 below.

Table 2 – Direction specifications of a HBC interface
Value
Specification Symbol Unit
Min. Typ. Max.
Directivity DIR  dB
coupling
4.2.3 Transient specifications
Transient specifications of a HBC electrode shall be given as shown in Table 3 below.
Table 3 – Transient specifications of a HBC electrode
Value
Specification Symbol Unit
Min. Typ. Max.
Detection time T  s
detection
4.3 Limiting values
4.3.1 Details to be stated
The following details shall be stated:
– Any dependency between the limiting values shall be specified.
– If externally connected and/or attached elements have an influence on the limiting values,
the elements and their conditions shall be specified.
– If the limiting values are exceeded for transient overload, the permissible excesses and
their durations shall be specified.
– All voltages are referenced to a specific reference terminal.
– The limiting values given shall cover an interface’s operation over the specified range of
operating temperature. If the limiting values are dependent on temperature, the
dependency shall be given.
4.3.2 Electrica
...