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Mobile Phone Patent Abstract
The invention is directed to a digital mobile phone of a type using
a subscriber identification module, the improvement being that there
is an externally attached holder for at least two subscriber identification
modules so that either can be readily selected by a switch for use
in the same phone. There are also described flexible circuits that
are used to connect the electrical contacts used conventionally
for reading a subscriber identification module by the phone inside
the phone that are able to slip through gaps that are naturally
occurring between protective covers of the phone because of necessary
manufacturing tolerances so that the external subscriber identification
modules can be connected without prejudicing manufacturers warranties
on any phone.
Mobile Phone Patent Claims
What is claimed is:
1. A digital mobile phone comprising at least two subscriber identification
module cards, and switch means arranged so that a user can change
the switch means from one switch position to another switch positions,
thereby to select for electrical connection to the mobile phone,
one or another of said module cards, each of said module cards permitting
said phone to access a respective associated mobile telephone network
as a function of the position of said switch means.
2. A digital mobile phone as set forth in claim 1, further including
memory means provided in said phone, and further including a software
program associated with said memory means and a central processing
unit to effect, on a selected bases, switching of the switch to
one or another of said module cards.
3. A digital mobile phone comprising an internal holder, a user-removable
subscriber identification module card within the internal holder,
said internal holder including a take-off card for replacing any
subscriber identification module disposed therein, and connector
means for making electrical connection of said subscriber identification
module card to said phone, and a wire take-off for each subscriber
identification module connection;
said wire take-off extending outside of the body of the mobile
phone to an external subscriber identification module card holder,
the external subscriber identification module card holder being
adapted to hold at least two subscriber identification module cards
each having electrical connections connected to the corresponding
wire take-offs connected to said card take-off, and having a switch
connected thereto to change connection of the wire take-offs from
a first subscriber identification module card in the external card
holder to another subscriber identification module card in the external
card holder, each of said subscriber identification module cards
permitting said phone to access a respective associated mobile telephone
network as a function of a position of said switch.
4. A digital mobile phone as in claim 1 further comprising:
an external card holder, electronically accessible memory and programmed
software in said memory to provide additional functions for the
digital mobile phone, whereby, said program within the software
in memory is adapted to examine a best accessible network connection
to be used.
5. A digital mobile phone as set forth in claim 3, further including:
an electronics switch operable by said software, whereby a network
provider may be chosen on the basis of either cost or best signal.
6. An existing mobile digital phone comprising an external holder
attachable to the mobile digital phone and adapted to receive at
least two subscriber identification module cards;
switch means for providing access to any one of a plurality of
subscriber identification module cards in said external holder;
and
means for connecting such received subscriber identification module
card electrically to a subscriber identification module take-off
adaptor located within an internal subscriber identification module
card holder in the digital mobile phone, each of said module cards
permitting said phone to access a respective associated mobile telephone
network as a function of a position of said switch means.
7. A digital mobile phone having a user removable subscriber identification
module card internal holder comprising:
a take-off card disposed within said subscriber identification
module card holder for making electrical connection between said
subscriber identification module card and said phone;
a wire take-off for each subscriber identification module connection,
said wire take-off extending outside of the body of said phone to
an external subscriber identification module card holder;
said external subscriber identification module card holder being
adapted to hold at least two subscriber identification module cards,
each being provided with electrical connectors for connection to
corresponding wire take-offs connected to said wire take-off; and
a switch connected to said wire take-offs to change connection
of the wire take-offs from a first subscriber identification module
card in the external card holder to another subscriber identification
module card in the external card holder, each of said module cards
permitting said phone to access a respective associated mobile telephone
network as a function of a position of said switch.
8. A digital mobile phone comprising a user-removable subscriber
identification module card holder and a take-off card having a wire
take-off for each subscriber identification module connection within
the holder;
said wire take-off adapted to extend outside of the body of said
mobile phone to an external subscriber identification module card
holder attached to the phone casing;
the external subscriber identification module card holder being
adapted to hold at least two subscriber identification module cards,
each having its electrical connections connected to corresponding
wire take-offs connected to said wire take-off; and
further including a switch connecting the wire take-offs from a
first subscriber identification module card in the external card
holder to another subscriber identification module card in the external
card holder, each of said module cards permitting said phone to
access a respective associated mobile telephone network as a function
of a position of said switch.
9. A digital mobile phone comprising a user-removable subscriber
identification module card internal holder, said internal subscriber
identification module card holder including a take-off card having
electrical contacts replicating a subscriber identification module
card that would otherwise be mounted therein, and making electrical
connection to said phone;
a wire take-off for each subscriber identification module connection,
each such wire take-off extending outside of the body of said mobile
phone to an external subscriber identification module card holder;
the external subscriber identification module card holder being
adapted to hold at least two subscriber identification module cards,
each having its electrical connections connected to the corresponding
wire take-offs connected to said take-off card, and
a switch connected to said take-off to change connection from one
of the subscriber identification module cards in the external card
holder to a second of the subscriber identification module cards
in the external card holder, each of said module cards permitting
said phone to access a respective associated mobile telephone network
as a function of a position of said switch.
10. A digital mobile phone as in any one of the preceding claims
2 through 5, wherein said wire take offs together comprise an integrated
flexible circuit board including a substrate, a laid conducting
track for each circuit on the substrate, and an overlay coating.
11. A digital mobile phone as in claim 2, wherein said wire take-offs
together comprise an integrated flexible circuit board, including
a substrate comprised of polyester plastic material, a laid conducting
track for each circuit on the substrate, and an overlay coating
of polyester plastic material.
12. A digital mobile phone using a subscriber identification module
comprising: an externally-attached holder for at least two subscriber
identification modules, whereby either one or another of said modules
can be selected by a switch to be electrically connected for use
with said phone, each of said modules permitting said phone to access
a respective associated mobile telephone network as a function of
a position of said switch.
13. A digital mobile phone as in claim 12, further including: memory
means within said phone and a software program in said memory means
and a central processing unit to effect switching of said switch
to one or another of said modules.
Mobile Phone Patent Description
BACKGROUND OF THE INVENTION
This invention relates to digital mobile phones.
It is conventional in a digital mobile phone that there is a removable
subscriber identification module in the form of a card which is
fitted into an internal holder.
Such a module which shall hereinafter be referred to as a "subscriber
identification module card" is a user replacement module for
use by a commercial entity providing a network to ensure that the
digital phone is connected to the commercial entities network.
It is possible for a user to have the subscriber identification
module card of one commercial network provider as well as the subscriber
identification module card of its competitor.
However, in phones currently available, the card is not readily
accessible for removal and replacement with an alternate subscriber
identification module card.
It can be achieved but, taking at least one instance, for instance,
the currently available Nokia 2110 digital phone, to replace the
subscriber identification module card of one network and replace
it with another, the battery has to be removed, a first external
cover has to be pulled out, and an interlocking bracket must be
operated to release the locking position of a pivotal support which
is pushed into the release position. It is then still a matter of
manipulation to be able to remove the subscriber identification
module card from the holder.
The actions required mean that the phone has to be turned off so
that if one wants to change networks, one then has to go through
the additional procedures of closing the phone down, and then starting
the phone up again.
At the present time, digital networks are not co-extensive and
further, the costs of accessing or using one network as compared
to another vary considerably so that there is considerable advantage
to an end user to be able to choose the network,
a) upon being within the range of a particular network or being
in a position to better be able to receive a particular signal,
and
b) alternatively that the price of a call from one network may
be quite different to the price of another.
It is currently possible with the same phone to do this but with
the effort involved in having to change over subscriber identification
module cards, most people will either not consider doing so or will
not be bothered in most cases.
The disadvantage of this is that one network provider which wishes
to actively compete with other network providers, might then be
at a considerable disadvantage because despite providing best prices,
their network might not be quite as extensive and they therefore
cannot persuade a phone user to use their network because the decision
is made on the basis of both access and cost.
What I propose is a solution to this problem which will have particular
value to a commercial network provider especially if they do not
have such an extensive range and it will provide substantial advantages
to users because it will enable them to make a better choice without
as many of the current implicit difficulties.
SUMMARY OF THE INVENTION
According to one form of this invention there is provided a mobile
phone of the type having a subscriber identification module wherein
there are provided at least two subscriber identification modules
and switch means accessible to the user and adapted for the user
to select one or other of the modules.
In preference there is proposed that there is an external holder
attachable to an existing mobile digital phone and adapted to take
at least two subscriber identification module cards, switch means
to provide access to any one of the subscriber identification module
cards held in the external holder and means connecting such connected
external subscriber identification module card electrically to a
subscriber identification module take-off adaptor adapted to be
located within an existing internal subscriber identification module
card holder of the digital mobile phone.
In a further form the invention can be said to reside in a digital
mobile phone of a type having a user removable subscriber identification
module card within an internal holder, characterised in that there
is within the internal subscriber identification module card holder
a take-off card having electrical contacts replicating any subscriber
identification module card that would otherwise be therein, and
connecting to electrical connections for electrical connection in
the phone and having a wire take-off for each subscriber identification
module connection, the wire take-off in each case extending to an
outside of the body of the mobile phone to an external subscriber
identification module card holder, the external subscriber identification
module card holder being adapted to hold at least two subscriber
identification module cards each having its electrical connections
connected to the corresponding wire take-offs connected to the take-off
card, and having a switch therewith adapted to change effective
active connection from one of the subscriber identification module
cards in the external card holder to a second of the subscriber
identification module cards in the external card holder.
In another form of this invention this can be said to reside in
a digital mobile phone of a type having a user removable subscriber
identification module card within an internal subscriber identification
module card holder, a take off card having a wire take-off for each
subscriber identification module connection within the holder the
wire take-off adapted to extend through to an outside of the body
of the mobile phone to an external subscriber identification module
card holder attached to the phone casing, the external subscriber
identification module card holder being adapted to hold at least
two subscriber identification module cards with each having its
electrical connections connected to the corresponding wire take
offs connected to the wire take-off, and having a switch therewith
to change effective active connection of the wire take offs from
a first of any subscriber identification module cards in the external
card holder to a second or other of any subscriber identification
module cards in the external card holder.
One of the difficulties with such an arrangement, however, is the
question of how one provides such electrical connections from the
internal parts of the phone to an external subscriber identification
module card holder.
I have carefully examined each of the mobile digital phones currently
on the market and I have found that in each case, it is possible
to provide a connection using very thin wires in some cases of less
than 0.3 mm thickness by having the thin wires follow a path beneath
the covers and around corners to the external subscriber identification
module cardholder.
In preference the external subscriber identification module card
holder will be adhered in an appropriate way to the body of an existing
digital phone and the switch would in preference be a mechanical
switch.
Further, in preference, within the external card holder, there
can be additionally provided electronically accessible memory and
programmed software in the memory to provide additional functions
as far as the digital mobile phone is concerned.
For instance, it is proposed in preference that such logic would
examine through its connections with the digital phone, the best
accessible network connection to be used, and also the best from
a point of view of cost.
In such a case, there can be the additional feature of an electronics
switch operated by the logic so that the user of the phone no longer
has to make a decision as to which network to choose but this will
be made on the basis of either cost or best signal as the case might
be which can be previously selected for the logic to choose.
Further, there can in fact be additional memory to have additional
recording of audio signals and any number of additional features
can then be incorporated within or connected to the external module
to be joined with the functions of the digital phone.
Further in preference there is provided that the wire take-offs
are together an integrated flexible circuit board where there is
a substrate, a laid conducting track for each circuit on the substrate
and an overlay coating.
In preference the substrate is comprised of polyester plastics
material.
In preference the conducting tracks are copper with gold contact
surfaces.
What now will be seen to be the case in preference is that there
is a digital mobile phone of a type using a subscriber identification
module, the improvement being that there is an externally attached
holder for at least two subscriber identification modules so that
either can be readily selected by a switch for use in the same phone.
Further in preference there are flexible circuits that can be used
to connect electrical contacts used conventionally for reading a
subscriber identification module by the phone inside the phone that
are able to slip through gaps that are naturally occurring between
protective covers of the phone because of necessary manufacturing
tolerances so that the external subscriber identification modules
can be connected without prejudicing manufacturers warranties on
any phone.
BRIEF DESCRIPTION OF DRAWINGS
For a better understanding of this invention it will now be described
by reference to preferred embodiments which will be described with
the assistance of drawings wherein:
FIG. 1 is a perspective view of a digital phone according to a
first embodiment where the illustration shows a phone with battery
and SIM card holder removed and showing a conducting track shaped
to follow a path to a switch at the top of the phone,
FIG. 2 is a perspective view of the top of the phone as shown in
FIG. 1
FIG. 3 is a further perspective view as shown in FIGS. 1 and 2
from a top of the phone, however, with the switch changed in position
from a first position to a second position, and with a battery in
position,
FIG. 4 is the same phone as in FIGS. 1, 2 and 3 and illustrates
a further view of this according to the first embodiment,
FIG. 5 is a view of a second phone according to a second embodiment
where the illustration shows a perspective view with a Subscriber
Identification Module (SIM card) cover in an open position and battery
removed, and a track from a take off card replacing a Subscriber
Identification Module,
FIG. 6 is a view of the same phone from the same position as shown
in FIG. 5 except a wire take off is shown in full with the shape
of the phone in dotted outline,
FIG. 7 is a view of the same phone as in FIGS. 5 and 6 with however
a SIM card holder in an opened position about to take a take off
card replacing a SIM card preparatory to locating the wire take
off in the path to an external switch attached to the phone,
FIG. 8 is a perspective view of a phone according to a third embodiment
wherein this case, the battery is removed to assist in seeing the
features, and a switch is attached to the back of the phone connecting
to the Subscriber Identification Module in this case,
FIG. 9 is a cross sectional view according to a fourth embodiment
the internal parts of the phone being shown schematically as simply
cross hatched where of course there are functional electronic components
within the phone which are of not direct relevance to the invention,
the illustration showing the path of a flexible track in this case,
FIG. 10 is a cross sectional view similar to FIG. 9 of a further
phone wherein this case the battery is also shown connected but
wherein the internal details of the battery are shown simply as
cross hatched for sake of simplicity,
FIG. 11 is a cross sectional view in schematic form of the embodiment
generally shown in FIG. 8,
FIG. 12 is a perspective view of a further embodiment where the
switch in this case is shown being connected to a flip lid on a
phone and the track in this case is connecting through a flexible
connection,
FIG. 13 is a further view of the same phone as in FIG. 12,
FIG. 14 is a plan view of a flexible track according to a typical
layout,
FIG. 15 is a perspective view of the arrangement as shown in FIG.
14 of the track,
FIG. 16 is a cross sectional view along the lines of 16,
FIG. 17 is an exploded view of the components of switch means connecting
to a flexible wire take off track,
FIG. 18 is a cross sectional view of the assembled switch means
as shown in FIG. 17 in the exploded view,
FIG. 19 is an opposite cross sectional view of the same switch
as shown in FIG. 18, and
FIG. 20 is an end elevation of the switch as shown in FIGS. 18
and 19 and in the exploded view in 17.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Now referring in detail to the drawings, and in particular to FIGS.
1, 2, 3 and 4, the phone in this case 1 is a typical of a currently
manufactured digital phone having control buttons on its front at
2, microphone at 3, sound output at 4 and a visual display at 5.
At the back of this phone, there are provided means to hold a Subscriber
Identification Module which uniquely identifies a subscriber to
a provider of a digital communications service.
In this case, with battery removed as particularly shown in FIG.
1, a flexible track 6 is formed initially in a planar shape and
is assembled so as to have a polyester substrate, a track deposited
into an etched channel within the polyester substrate to provide
for conduction along the track, and a coating over this again of
a polyester plastics material.
This is chosen so that the material itself will firstly be sufficiently
flexible to be able to be subsequently shaped so as to follow very
closely a somewhat tortuous path that will be necessary to convey
electrical wire connections from a take off card 7 the connections
of which then pass appropriately around corners such as at 8, 9,
10 and 11, firstly so that they can be firmly held in position by
adhering to the surface of the material over which they pass and
then secondly so that they are sufficiently thin so as not to interfere
with interconnecting components that will otherwise have to be relocated
in position.
The track also diverts from one linear direction through a diagonal
orientation to another lineal direction at 12.
Finally the track connects into switch 13.
The switch 13 includes means to hold two Subscriber Identification
Modules. By reason of a change in position of the switch 13 from
in this case (1) to (2) the effective active electrical connections
connected by reason of the take off card 7 will therefore be effectively
changed. It will now be seen that by the attachment to the phone
1 of such an electrically conducting track this allows for the user
to choose at least one of either of two Subscriber Identification
Modules by the simplest of actions. Such an action will not of itself
also require the phone to be switched off and the user can therefore
quickly check whether there is service to be provided by one or
other of the providers for which the SIM cards are in place.
Further, by reason that the electrical track is of a total thickness
of approximately six thousandths of an inch, (this may be within
the range of four thousands of an inch to eight thousandths of an
inch,) this will not of itself in any cases so far established interfere
with any of mechanically interlocking parts that will subsequently
have to be reconnected such as a cover plate or a battery connection
in an existing mobile phone.
I will now refer to a remainder of telephones and to examples of
shapes of track which will be effective, but in general, it will
now be seen that it appears that any commercially available digital
phone using a Subscriber Identification Module can be appropriately
modified to have this additional advantageous feature.
For instance, let us look at the embodiment illustrated in FIGS.
5, 6 and 7. In this case the phone 14 is of a type which has a separate
compartment for the SIM card which can only be opened subsequent
to a battery being removed.
Accordingly, the compartment shown at 15 is accessible by opening
a sliding cover 16 which in FIG. 5 for instance and in FIG. 7 is
shown in the open position.
A Subscriber Identification Module is intended to be held in a
holder at 17 which of itself is pivotally supported at 18.
As shown then, according to this embodiment, a take off card at
18 is inserted in the SIM holder 17 and such then that the electrical
contacts at typically 19 will engage against the appropriate electrical
connectors of the phone at 20.
The thin track, again of a thickness of approximately six thousandths
of an inch, and comprised of two layers of polyester plastics material,
is carefully shaped to then be positioned on the back of the holder
17 and then tracked out from the compartment across an edge at 21
to a switch at 22.
Again in this case then there is able to be connected the SIM card
take off electrical connections to separate and therefore easily
accessible switch means at 22.
The track in this case is also adhered to an external surface of
a body of the phone to keep this in a protected position.
Now referring to the drawing at FIG. 8, this is a third embodiment
and is the illustration of a most recent model of digital phone
with in this case a battery being removed but as can be seen, there
is an electrical take off card at 23 which is held in position by
a slideable catch at 24 and in this case then electrical connections
are run through a pathway as shown at 24 which then track around
outer surfaces of the body until they meet the switch at 25 which
has a visual window at 26 to indicate which one of two SIM cards
has been chosen. There is an end switch member at 27 by which switching
is achieved.
In this case also, the track 24 is adhered to the surface of the
phone and by reason of its thinness and its material structure such
that its substrate and cover is of polyester plastic materials,
it is able to follow closely corners of the track with very small
radius without fracture. The track is adhered to the surface of
the phone casing to assist in long term stability and mechanical
support. In this case, there is also provided an over cover protective
coating also adhered across the track and to the casing at both
sides of the track.
FIG. 9 shows somewhat schematically the way in which the electrical
track is located to extend between take off card at 28 and switch
at 29.
The card 28 is held so that its conducting face will electrically
connect with connectors such as (30 and then the track of the conducting
layers will then follow as shown at 31 for instance until it reaches
the switch means 29 where the track itself is folded into a circuitous
shape so that respective Subscriber Identification Modules shown
at 32 in the one case and (33 in the other will in each case have
their oppositely directed electronic parts accessible for electrical
connection to the track.
This is shown in a further instance in FIG. 10 where the track
34 passes from a take off at 35 to switch means at 36 with two Subscriber
Identification Modules at 37 and 38 being adapted to be in electrical
contact with their effective active connections.
A further example of this is in FIG. 11 where again track 39 is
shown to very closely follow an external shape of the phone body
at 40 noting that the general cross hatching is schematic only.
In this case again, battery at 41 then can be shown to leave quite
clear at 42 any contact or need to squeeze the track 39.
The track in this case again is of six thousandth of an inch total
thickness and the tolerance or clearance between the respective
mating members such as the battery. The housing will allow for an
even larger thickness therebetween before there is interference
with any effective action of the battery being relocated or being
placed in position.
There is a switch, in this case again at 43 with the Subscriber
Identification Modules at 44 and 45. There is a take off at 46.
Referring now to FIGS. 12 and 13, the difference here is that this
is an embodiment applying to a so called "flip phone".
In this case, there is a cover shown at 47 which can be opened
to reveal a keypad and also to provide a microphone position.
In this case however, a switch means at 48 can be located on the
outer surface of the cover 47 and a flexible track at 49 can be
allowed to stay clear of being adhered throughout to the cover 47.
This allows for a hinging flexible action of the flexible track
with a larger radius so that the track which is only six thousandth
of an inch thickness can more readily allow for repeated hinging,
without undo metal fatigue of the track materials.
Not shown is a connection of the track to an appropriate internal
Subscriber Identification Module provided by the manufacturer.
FIG. 12 illustrates the fact that in this case, the Subscriber
Identification Module is of a larger size such as the size of traditional
credit card shown at 50 but here again it works in the same way
as those applications previously described.
We now refer to FIGS. 14 and 15. These Figures show specifically
a typical track comprised of the dual laminate of polyester plastics
materials and the inlaid copper track.
There are at a take off location at 51 electrical contact points
shown typically at 52 and 53 which are in turn, coated with an appropriate
long lasting material such as gold or iridium and these are left
open for electrical contact purposes.
At the switch, contact with respective Subscriber Identification
Modules is achieved by folding over the track and accordingly the
track itself has two sets of electrical contactors shown at 54 in
the one case and 55 in the other. There are breaks in the circuit
shown at 56 so that an electrical contactor can variously connect
connections say to the take off connectors at 58 in the one case
or the connecters at 59 for connection to the contactors at 58 in
the other.
The way this works is shown more generally at FIG. 17.
Accordingly, referring to FIG. 17, a track at 60 is folded over
generally into an "S" shape so that upper most there are
switch connectors at 61, 62 and 63, and such that two Subscriber
Identification Modules at 64 and 65 will each fit in a slot shown
at 66 so that both an upper and lower face of the two SIM cards
will therefore present their electrically open contact surfaces.
An electrical contact plate at 67 is held under the pressure of
a foam pad 68 within switch operative plate 69 and such that respective
electrical connections will bridge either between the contacts of
61 and 62 in the one case or 62 and 63 in the other and thereby
bring into active connection the module either 64 in the one case
or 65 in the other.
There is a housing at 71 and a cover at 72 to hold all of these
pieces together. When assembled, the switch has a cross sectional
view as shown in FIGS. 18 and 19 from where it will be seen that
the track 60 will be caused to bend tightly back on itself at 73
providing an uppermost surface by which the electrical connections
at 67 can then effectively contact and bridge across the appropriate
contact surfaces.
This then illustrates how the invention can be put into practice
in various modes.
From the description, it will be seen that there can be provided
in a very effective way to substantially all of the mobile digital
phones that are known to exist means to significantly improve these
for access by the user in respect of providing alternate providers
at the whim of the user. Such a modification can be economically
prepared and provided, and can be installed very simply by appropriate
people. It will not provide any interference to conventional enjoyment
or the size or location of any digital mobile phone currently available.
With conventionally engineered plastic covers there has been found
to be ample gaps of sufficient size to slip electrical track there
through and this enables connections to be made which do not rely
in the slightest on any manufacturers approval because the inner
electrical components are not prejudiced and warranties will therefor
not be affected.
At the same time this gives significant advantage to a consumer
who can then simply and cheaply expand functions of a phone both
by reason of easy alternative SIM card access and other logic connections.
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