Patent JPH0321279A successfully refreshed from Google Patents.
Patent EP1170929A2 successfully refreshed from Google Patents.
EP1170929A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Foldable portable radio terminal
Assignee: NEC Corp
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Filing: 2001-07-05
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Granted: —
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Expires: 2021-07-05
Abstract
Abstract A foldable portable radio terminal comprising an upper housing, a lower housing and a hinge for connecting housings is provided, where an antenna is arranged adjacently to the hinge in the lower housing. A connection unit which connects an upper-housing circuit and a lower-housing circuit has a wiring length longer than a spacing between the upper-housing circuit and the lower-housing circuit. The connection unit has an inductance provided by a portion partially rolled up in spiral or in coil, which acts as a load impedance to a high-frequency current generated on the housing. The current that degrades antenna characteristics is reduced, and therefore the characteristics are improved.
Inventors
- 👤 Shinya NEC Saitama Ltd. Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:59
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3833; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/084; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H04M; H04M1/00; H04M1/02; H04M1/0202; H04M1/0206; H04M1/0208; H04M1/0214; H04M1/0216
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
101 words
A foldable portable radio terminal having a first housing
for including a first circuit unit inside and a second housing for including
a second circuit unit inside, said first and second housings are connected
through the intermediary of a hinge so as to rotate around said hinge,
said terminal comprising: power-supply means for supplying power to said first and
second circuit units; and connecting means for electrically connecting said first and
second circuit units, wherein said connecting means having a prescribed shape and
length, so that said connecting means generates an inductance which
serves as a load to a high-frequency current.
Claim 2
Dependent Claim
23 words
A foldable portable radio terminal according to claim 1,
wherein said connecting means is a flexible board having conductors for
generating said inductance.
Claim 3
Dependent Claim
53 words
A foldable portable radio terminal according to claim 2,
wherein said prescribed shape is a shape where said connecting means
partially has a spiral structure with one or more of turns, and said
prescribed length is a length capable of connecting said first and second
circuit units with said spiral structure being maintained.
Claim 4
Dependent Claim
125 words
A foldable portable radio terminal according to claim 3,
wherein said connecting means, when it is expanded, is S-shaped
including first, second and third zonal areas, said first zonal area
corresponding to one end portion of said connecting means and being
connected to said first circuit unit, said second zonal area corresponding
to another end portion of said connecting means and being connected to
said second circuit unit, and said third zonal area corresponding to an
area which lies intermediary of said first and second zonal areas, and
wherein said third zonal area being associated with a portion where said
spiral structure is formed and having a length for avoiding
interconnection between said first and second zonal areas when said
spiral structure is being maintained.
Claim 5
Dependent Claim
20 words
A foldable portable radio terminal according to claim 4,
wherein said connecting means is arranged to go through said hinge.
Claim 6
Dependent Claim
27 words
A foldable portable radio terminal according to claim 5,
wherein said connecting means is housed inside said hinge at a portion
where said spiral structure is formed.
Claim 7
Dependent Claim
47 words
A foldable portable radio terminal according to claim 2,
wherein said prescribed shape is a shape where said connecting means
partially has a coil structure, and said prescribed length is a length
capable of connecting said first and second circuit units with said coil
structure being maintained.
Claim 8
Dependent Claim
130 words
A foldable portable radio terminal according to claim 7,
wherein said connecting means, when it is expanded, is tuning-fork
shaped including first, second and third zonal areas, said first zonal area
corresponding to one end portion of one prong and being connected to
said first circuit unit, said second zonal area corresponding to another
end portion of another prong and being connected to said first circuit unit,
and said third zonal area corresponding to an end portion of a stem and
being connected to said second circuit unit, wherein a portion where said
prongs and stem merge and its vicinity is rolled up to form said coil
structure, and wherein said first, second and third zonal areas are
arranged apart for avoiding interconnection when said coil structure is
being maintained.
Claim 9
Dependent Claim
20 words
A foldable portable radio terminal according to claim 8,
wherein said connecting means is arranged to go through said hinge.
Claim 10
Dependent Claim
27 words
A foldable portable radio terminal according to claim 9,
wherein said connecting means is housed inside said hinge at a portion
where said coil structure is formed.
Claim 11
Dependent Claim
130 words
A foldable portable radio terminal according to claim 7,
wherein said connecting means, when it is expanded, has a shape in
which a plurality of tuning-fork shapes are turned and partially
overlapped each other to form a plurality of prongs including first and
second zonal areas, said first zonal area corresponding to first end
portions of said prongs which are facing in the same direction, said
second zonal area corresponding to second end portions of said prongs
which are facing in the direction opposed to said first end portions,
wherein a portion where said plurality of prongs merge and its vicinity is
rolled up to form said coil structure, and wherein said first and second
zonal areas are arranged apart for avoiding interconnection when said
coil structure is being maintained.
Claim 12
Dependent Claim
20 words
A foldable portable radio terminal according to claim 11,
wherein said connecting means is arranged to go through said hinge.
Claim 13
Dependent Claim
27 words
A foldable portable radio terminal according to claim 12,
wherein said connecting means is housed inside said hinge at a portion
where said coil structure is formed.
Claim 14
Dependent Claim
93 words
A foldable portable radio terminal according to claim 3,
wherein said connecting means, when it is expanded, has a shape
including first, second and third zonal areas, said first zonal area
corresponding to one end portion of said connecting means and being
connected to said first circuit unit, said second zonal area corresponding
to another end portion of said connecting means and being connected to
said second circuit unit, and said third zonal area corresponding to a
portion which lies intermediary of said first and second zonal areas and
takes a crank shape.
Claim 15
Dependent Claim
48 words
A foldable portable radio terminal according to claim 14,
wherein said portion associated with said crank shape and its vicinity is
formed to have a coil structure and having a length for avoiding
interconnection between said first and second zonal areas when said coil
structure is being maintained.
Claim 16
Dependent Claim
20 words
A foldable portable radio terminal according to claim 15,
wherein said connecting means is arranged to go through said hinge.
Claim 17
Dependent Claim
27 words
A foldable portable radio terminal according to claim 15,
wherein said connecting means is housed inside said hinge at a portion
where said coil structure is formed.
Claim 18
Dependent Claim
34 words
A foldable portable radio terminal according to claim 1,
wherein antenna unit and radio unit to which power is supplied from
said power-supply means are included in the same housing as said
power-supply means.
Claim 19
Dependent Claim
42 words
A foldable portable radio terminal according to claim 18,
wherein said antenna unit and radio unit are connected to said second
circuit unit within said second housing, said first circuit unit having a
length of approximately half of said second circuit unit.
Claim 20
Dependent Claim
36 words
A foldable portable radio terminal according to claim 2,
wherein said first housing is made of metal and said second housing is
made of insulator, said first housing being electrically connected to said
first circuit unit.
Claim 21
Dependent Claim
70 words
A foldable portable radio terminal according to claim 20,
wherein said first housing comprising a front panel and a rear panel has
configurations either where said front panel being made of metal and
said rear panel being made of insulator or where said front panel being
made of insulator and said rear panel being made of metal, said panels
made of metal being electrically connected to said first circuit unit.
Claim 22
Dependent Claim
36 words
A foldable portable radio terminal according to claim 2,
wherein said first housing is made of insulator and said second housing
is made of metal, said second housing being electrically connected to said
second circuit unit.
Claim 23
Dependent Claim
70 words
A foldable portable radio terminal according to claim 22,
wherein said second housing comprising a front panel and a rear panel
has configurations either where said front panel being made of metal and
said rear panel being made of insulator or where said front panel being
made of insulator and said rear panel being made of metal, said panels
made of metal being electrically connected to said second circuit unit.
Claim 24
Dependent Claim
33 words
A foldable portable radio terminal according to claim 2,
wherein said first and second housings are made of metal, and wherein
no electrical connections are provided between said first housing and
second housing.
Claim 25
Dependent Claim
81 words
A foldable portable radio terminal according to claim 24,
wherein said first and second housings respectively comprise a front
panel and a rear panel, said front panel of said first housing being made
of metal and said rear panel of said first housing being made of insulator,
said front panel of said second housing being made of metal and said rear
panel of said second housing being made of insulator, and wherein no
electrical connections are provided between said front panels.
References Cited (Backward Citations)
No citation records indexed.
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