U.S. patent application number 16/087304 was filed with the patent office on 2019-04-11 for receiver and rf signal supply apparatus.
This patent application is currently assigned to Sony Corporation. The applicant listed for this patent is Sony Corporation. Invention is credited to Satoru Tsuboi, Yoshitaka Yoshino.
Application Number | 20190110119 16/087304 |
Document ID | / |
Family ID | 59965558 |
Filed Date | 2019-04-11 |
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United States Patent
Application |
20190110119 |
Kind Code |
A1 |
Yoshino; Yoshitaka ; et
al. |
April 11, 2019 |
RECEIVER AND RF SIGNAL SUPPLY APPARATUS
Abstract
A receiver includes a connector into which a plug can be
inserted in either of one state of a surface and a rear surface and
another state in which the surface and the rear surface are
inverted. A first array including a plurality of pins and a second
array including a plurality of pins are formed in the connector
nearly in parallel, and both or one of a first pin included in the
first array and a second pin included in the second array and
positioned at a diagonal of the first pin is set for input use of
an RF signal.
Inventors: |
Yoshino; Yoshitaka; (Tokyo,
JP) ; Tsuboi; Satoru; (Kanagawa, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Sony Corporation |
Tokyo |
|
JP |
|
|
Assignee: |
Sony Corporation
Tokyo
JP
|
Family ID: |
59965558 |
Appl. No.: |
16/087304 |
Filed: |
March 27, 2017 |
PCT Filed: |
March 27, 2017 |
PCT NO: |
PCT/JP2017/012420 |
371 Date: |
September 21, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01Q 1/46 20130101; H04B
1/16 20130101; G06F 13/4282 20130101; H01R 24/60 20130101; H04R
1/1041 20130101; G06F 2213/0042 20130101; H04B 1/18 20130101; H04R
2420/09 20130101; H04R 1/1033 20130101 |
International
Class: |
H04R 1/10 20060101
H04R001/10; G06F 13/42 20060101 G06F013/42; H01Q 1/46 20060101
H01Q001/46 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 29, 2016 |
JP |
2016-065397 |
Claims
1. A receiver comprising: a connector into which a plug can be
inserted in either of one state of a surface and a rear surface and
another state in which the surface and the rear surface are
inverted, wherein a first array including a plurality of pins and a
second array including a plurality of pins are formed in the
connector nearly in parallel, and both or one of a first pin
included in the first array and a second pin included in the second
array and positioned at a diagonal of the first pin is set for
input use of an RF signal.
2. The receiver according to claim 1, wherein the first pin and the
second pin are ground terminals.
3. The receiver according to claim 1, wherein in a case where both
the first pin and the second pin are set for input use of the RF
signal, both the first pin and the second pin are connected to a
ground via a high-frequency cutoff device having high impedance in
a frequency band of the RF signal and are connected to an RF input
terminal via a capacitor allowing the RF signal to pass
through.
4. The receiver according to claim 1, wherein both the first pin
and the second pin are set for input use of the RF signal, the
receiver further comprising: switching means that selects the RF
signal from one of the first pin and the second pin and supplies
the RF signal to an RF input terminal.
5. The receiver according to claim 4, wherein the RF signal is
input to one of the first pin and the second pin, and a level of
the RF signal supplied to the RF input terminal is detected and the
switching means is switched in accordance with a detection
result.
6. The receiver according to claim 1, wherein in a case where the
RF signal is input to both the first pin and the second pin, the
first pin and the second pin are connected in common and are set
for input use of the RF signal.
7. The receiver according to claim 1, wherein in a case where the
RF signal is input to both the first pin and the second pin, one of
the first pin and the second pin is set for input use of the RF
signal and another of the first pin and the second pin is adjusted
by an adjustment of a wiring length, an inductor, or a capacitor so
as not to function as a stub including lengths of the plug and the
connector in a use band.
8. The receiver according to claim 1, wherein a plug specified by a
USB Type-C standard can be inserted into the connector.
9. The receiver according to claim 8, wherein an audio adapter
accessory mode in which a CC pin and a VCONN pin are
short-circuited and that is specified by the USB Type-C standard is
used for input of the RF signal.
10. An RF signal supply apparatus comprising: a plug that can be
inserted into a connector in either of one state of a surface and a
rear surface and another state in which the surface and the rear
surface are inverted; and a cable that supplies an RF signal to the
plug, wherein a first array including a plurality of pins and a
second array including a plurality of pins are formed in the plug
nearly in parallel, and both or one of a first pin included in the
first array and a second pin included in the second array and
positioned at a diagonal of the first pin is set for supply use of
the RF signal.
11. The RF signal supply apparatus according to claim 10, wherein
the cable has a function of an antenna, and an output of the
antenna is supplied as the RF signal to both or one of the first
pin and the second pin.
12. The RF signal supply apparatus according to claim 10, wherein
the plug is specified by a USB Type-C standard.
13. The RF signal supply apparatus according to claim 10, wherein a
jack for headset connection use is connected to the cable.
14. The RF signal supply apparatus according to claim 10, wherein a
connector for RF signal transmission use is connected to the cable.
Description
TECHNICAL FIELD
[0001] The present technology relates to a receiver that receives,
for example, television broadcasting and an RF signal supply
apparatus that supplies an RF signal (high-frequency signal) to the
receiver.
BACKGROUND ART
[0002] In the case of using information terminal equipment that is
not equipped with an RF connector, any input/output terminal is
generally allowed to have an input function of an RF signal. For
example, an earphone cable connected to an earphone terminal is
allowed to serve as an antenna. However, the earphone terminal is a
relatively large terminal in order to insert a mini plug with a
diameter of 3.5 mm, and therefore the above is disadvantageous for
thinning of equipment.
[0003] To solve the above problem, as described in PTL 1, it is
proposed that a USB (Universal Serial Bus) connector is used as an
RF input. Specifically, a configuration in which a USB terminal
(type A) and a USB terminal (type B) are provided at both ends of a
coaxial shield line with a predetermined length is described.
Further, in PTL 2, an example of a USB connector SMA (Sub Miniature
Type A) conversion cable is described. In PTL 1 and PTL 2 described
above, an identification pin is used as an antenna input.
CITATION LIST
Patent Literature
[0004] [PTL 1] [0005] Japanese Patent Laid-Open No. 2012-244327
[0006] [PTL 2] [0007] Japanese Patent Laid-Open No. 2016-001916
SUMMARY
Technical Problem
[0008] In the descriptions of PTL 1 and PTL 2, the USB terminal is
specified by an existing standard and a surface and a rear surface
in the case of inserting a USB plug into the USB connector are
fixed. However, recently, a reversible connector in which a
direction of a surface and a rear surface is not restricted is
being used. A USB Type-C connector, a Lightning connector, or the
like is a reversible connector.
[0009] With such a reversible connector, in the case in which the
surface and the rear surface of the plug are replaced with each
other, when antenna input terminals are fixed as in PTL 1 or PTL 2,
there arises a problem that an antenna input cannot be
supplied.
[0010] Accordingly, an object of the present technology is to
provide a receiver capable of receiving an RF signal and an RF
signal supply apparatus capable of supplying an RF signal without
trouble when using a reversible connector.
Solution to Problem
[0011] A receiver according to the present technology has a
connector into which a plug can be inserted in either of one state
of a surface and a rear surface and another state in which the
surface and the rear surface are inverted. A first array including
a plurality of pins and a second array including a plurality of
pins are formed in the connector nearly in parallel, and both or
one of a first pin included in the first array and a second pin
included in the second array and positioned at a diagonal of the
first pin is set for input use of an RF signal.
[0012] An RF signal supply apparatus according to the present
technology has a plug that can be inserted into a connector in
either of one state of a surface and a rear surface and another
state in which the surface and the rear surface are inverted; and a
cable that supplies an RF signal to the plug. A first array
including a plurality of pins and a second array including a
plurality of pins are formed in the plug nearly in parallel, and
both or one of a first pin included in the first array and a second
pin included in the second array and positioned at a diagonal of
the first pin is set for supply use of the RF signal.
Advantageous Effect of Invention
[0013] According to at least one embodiment, it is possible to
supply an RF signal to a receiver without trouble in either of one
state of a surface and a rear surface of a plug and another state
in which the surface and the rear surface of the plug are inverted.
Note that the effects described here are not necessarily
restrictive, and any of the effects described in the present
technology are applicable. Further, content of the present
technology should not be limitedly interpreted by effects
exemplified in the following descriptions.
BRIEF DESCRIPTION OF DRAWINGS
[0014] FIG. 1 includes a perspective diagram and an elevation
diagram used to describe an example of a receptacle.
[0015] FIG. 2 includes a perspective diagram and an elevation
diagram used to describe an example of a plug.
[0016] FIG. 3 includes schematic diagrams illustrating respective
pin arrays in the case of viewing the receptacle and the plug from
a front face.
[0017] FIG. 4 is a connection diagram used to describe an audio
adapter accessory mode.
[0018] FIG. 5 is a block diagram used to describe the audio adapter
accessory mode.
[0019] FIG. 6 is a connection diagram used to describe a conversion
cable according to a first embodiment.
[0020] FIG. 7 is a connection diagram used to describe a
configuration on a receiver side according to the first
embodiment.
[0021] FIG. 8 is a connection diagram used to describe a cable
according to the first embodiment.
[0022] FIG. 9 is a connection diagram used to describe a conversion
cable according to a second embodiment.
[0023] FIG. 10 is a connection diagram used to describe the
conversion cable according to the second embodiment.
[0024] FIG. 11 is a connection diagram used to describe a
configuration on a receiver side according to the second
embodiment.
[0025] FIG. 12 is a connection diagram used to describe the
configuration on the receiver side according to the second
embodiment.
[0026] FIG. 13A is a graph indicating frequency characteristics of
a gain in a television band obtained by a simulation in the case of
forward connection and FIG. 13B is a graph indicating frequency
characteristics of a gain in a television band obtained by a
simulation in the case of reverse connection.
[0027] FIG. 14 is a connection diagram used to describe a cable
according to the second embodiment.
[0028] FIG. 15 is a connection diagram used to describe a cable
equipped with an F connector according to the second
embodiment.
[0029] FIG. 16 is a graph indicating pass characteristics S21
obtained by a simulation of the cable illustrated in FIG. 15.
[0030] FIG. 17 is a connection diagram used to describe a cable
according to a third embodiment.
[0031] FIG. 18 is a connection diagram used to describe a
configuration on a receiver side according to the third
embodiment.
DESCRIPTION OF EMBODIMENTS
[0032] The embodiments described below are preferred specific
examples of the present technology and technically preferable
various limitations are imposed. However, unless there are
descriptions to limit the present technology in particular in the
following description, the scope of the present technology shall
not be limited to these embodiments.
[0033] It is noted that the descriptions of the present technology
will be given in the following order.
<1. First Embodiment>
<2. Second Embodiment>
<3. Third Embodiment>
<4. Modification Example>
1. First Embodiment
[0034] A first embodiment is applied to a case in which, for
example, television broadcasting is received by using a mobile
terminal such as a smartphone or a tablet and uses a connector
specified by a USB Type-C standard as a connector. A shape of the
USB Type-C connector (hereinafter, appropriately referred to as a
receptacle) is a connector as small as a micro USB and is suitable
for use in a receiver of the mobile terminal or the like. Further,
in the case where the television broadcasting is received by using
the mobile terminal, a headset (headphones) is used to hear sound
of programs in many cases.
[0035] In the USB Type-C standard, a special operation mode (audio
adapter accessory mode) for supplying a headset with an analog
audio signal is determined as described below. If the audio adapter
accessory mode is used, at the time of receiving the television
broadcasting by the mobile terminal, sound can be heard by using
the headset. In consideration of the above point, an RF signal, for
example, an antenna signal is supplied to the mobile terminal in
the audio adapter accessory mode. Further, performing high-speed
data transmission and antenna-signal transmission at the same time
has an influence exerted on both, which is not preferable. It is
preferable that the antenna signal is transmitted while
transmitting such a signal with relatively low frequency as an
analog audio signal.
[0036] In the audio adapter accessory mode, a USB Type-C plug and a
jack for audio are connected through a cable. Transmission paths of
four analog signals, that is, a left channel signal (left), a right
channel signal (right), a microphone signal (microphone), and an
analog ground signal (ground) are formed. In the present embodiment
of the present technology, a ground is used as the transmission
path of the RF signal. Further, it is possible to constitute an
antenna cable by using, as the cable, a cable having a shield line
made of a braided copper wire.
[0037] The above-described technical concept of the first
embodiment is similar to those in the other embodiments. However,
the present technology is also applicable to a reversible
specification, for example, Lightning, other than the USB Type-C
standard. That is, in either of one state of a surface and a rear
surface and another state in which the surface and the rear surface
are inverted, it is possible to insert a plug into a receptacle. In
addition, in the present specification, terms of the RF signal and
the antenna signal are used in the meaning including an output
signal (including an amplified signal) from an antenna itself, the
antenna signal from external antennas supplied via an RF connector,
a wirelessly transmitted signal obtained by converting frequencies
of the antenna signal, and the like.
"Regarding the USB Type-C"
[0038] The USB Type-C as an example of a reversible connector will
be described prior to the description of the present technology.
FIG. 1 includes a perspective diagram and an elevation diagram
viewed from a front face of a USB Type-C receptacle RE. A first
array 2a and a second array 2b each including twelve contact points
(pins) are formed nearly in parallel on the opposite surfaces of an
intermediate substrate 1. The intermediate substrate 1, the first
array 2a, the second array 2b, and the like are stored within a
shell 3.
[0039] FIG. 2 illustrates a plug interface (hereinafter, simply
referred to as a plug) PL connected to the receptacle. A first
array 5a and a second array 5b each including spring contact points
(pins), which are made contact with the contact points of the first
array 2a and the second array 2b when the receptacle is inserted,
are formed nearly in parallel within a shell 4 of the plug.
Further, a rear portion of the shell 4 is covered with a synthetic
resin 6 and a cable 7 is derived out. The first array 5a and the
second array 5b each include twelve spring contact points.
[0040] FIG. 3A illustrates a pin array viewed from the front face
of the receptacle and FIG. 3B illustrates a pin array viewed from
the front face of the plug. In each of the pin arrays, twelve pins
of A1 to A12 are arrayed in an upper stage and twelve pins of B1 to
B12 are arrayed in a lower stage. The upper stage is referred to as
an A side and the lower stage is referred to as a B side. In the
case where the plug is inserted into the receptacle in a state in
which the A side is on the upper side, pins having the same names
(e.g., A1-A1, B12-B12, . . . ) are connected to each other. This
connection is referred to as a forward connection. However, if the
surface and the rear surface are inverted due to twist, etc. of the
cable, the plug is inserted into the receptacle in a state in which
the B side is on the upper side. In this case, the B side of the
plug is connected to the A side of the receptacle and the A side of
the plug is connected to the B side of the receptacle. This
connection is referred to as a reverse connection. The forward
connection or reverse connection of a plug as described above is
detected and a connection relation between the pins is set in
accordance with the connection state. Accordingly, either
connection can be established.
[0041] In the USB Type-C, a pin assignment is specified as
follows.
[0042] A side
[0043] A1: GND: Ground
[0044] A2: SSTXp1: A plus side of the data transmission specified
by USB 3.1
[0045] A3: SSTXn1: A minus side of the data transmission specified
by USB 3.1
[0046] A4: VBUS: Bus power
[0047] A5: CC1: Configuration channel
[0048] A6: Dp1 (or D+): A plus side of the data transmission
specified by USB 2.0
[0049] A7: Dn1 (or D-): A minus side of the data transmission
specified by USB 2.0
[0050] A8: SBU1: Sideband use
[0051] A9: VBUS: Bus power
[0052] A10: SSRXn2: A minus side of the data transmission specified
by USB 3.1
[0053] A11: SSRXp2: A plus side of the data transmission specified
by USB 3.1
[0054] A12: GND: Ground
[0055] B side
[0056] B12: GND: Ground
[0057] B11: SSRXp2: A plus side of the data transmission specified
by USB 3.1
[0058] B10: SSRXn2: A minus side of the data transmission specified
by USB 3.1
[0059] B9: VBUS: Bus power
[0060] B8: SBU2: Sideband use
[0061] B7: Dn2 (or D+): A plus side of the data transmission
specified by USB 2.0
[0062] B6: Dp2 (or D-): A minus side of the data transmission
specified by USB 2.0
[0063] B5: CC2: Configuration channel
[0064] B4: VBUS: Bus power
[0065] B3: SSTXn2: A minus side of the data transmission specified
by USB 3.1
[0066] B2: SSTXp2: A plus side of the data transmission specified
by USB 3.1
[0067] B1: GND: Ground
[0068] The USB Type-C is a reversible connector capable of being
inserted into the receptacle whether the surface or the rear
surface is on the upper side, and is a next-generation connector
that achieves both power delivery and high-speed transmission. In
addition to the above-described functions, there is a standard
referred to as the audio adapter accessory mode for this connector.
This recording is a standard that enables an analog audio signal to
pass through.
[0069] As illustrated in FIG. 4, there is used a conversion cable
which is connected at one end thereof with a jack 11 for the
headset into which a round plug connected to the headset is
inserted and is connected at the other end thereof with a USB
Type-C plug PL. In the audio adapter accessory mode, four analog
audio signals are transmitted through a conventional jack with a
diameter of 3.5 mm. Specifically, the jack 11 has an electrode 12a
connected to a tip (left channel terminal) of the plug inserted
into the jack, an electrode 12b connected to a ring 1 (right
channel terminal) of the plug, an electrode 12c connected to a ring
2 (microphone terminal), and an electrode 12d connected to a sleeve
(ground terminal) of the plug. Cables extended from the above
electrodes are connected to predetermined pins of the plug PL.
[0070] In addition, the jack 11 has a detection switch 13. The
detection switch 13 is a mechanical switch that turns on at the
time when the round plug is inserted into the jack 11. When the
detection switch 13 turns on, predetermined pins (A5: CC and B5:
VCONN) of the plug PL are short-circuited via the detection switch
13 and are connected to a digital ground. That is, when a short
circuit between CC and VCONN is confirmed, a mode moves to the
audio adapter accessory mode.
[0071] In the audio adapter accessory mode, the pin assignment is
specified as follows.
[0072] A5: CC: A system uses the pin A5 for detecting the audio
adapter accessory mode.
[0073] B5: VCONN: The system uses the pin B5 for detecting the
audio adapter accessory mode.
[0074] When the headset is connected, the pins A5 (CC) and B5
(VCONN) are connected to GND through a resistor with a certain
impedance value Ra or less, and the connection of the headset is
thereby detected. When the pins A5 (CC) and B5 (VCONN) are
short-circuited, an impedance value between the terminal and the
GND is less than Ra/2. Note that, as to this Ra, the impedance
value is specified by the USB Type-C standard.
[0075] A6/B6: Dp (or D+): right: the ring 1 of the jack with a
diameter of 3.5 mm: The pins A6 and B6 are connected to each other
within the adapter.
[0076] A7/B7: Dn (or D-): left: the tip of the jack with a diameter
of 3.5 mm: The pins A7 and B7 are connected to each other within
the adapter.
[0077] A8: SBU1: microphone/audio ground: the ring 2 of the jack
with a diameter of 3.5 mm
[0078] B8: SBU2: microphone/audio ground: the sleeve of the jack
with a diameter of 3.5 mm
[0079] A1/A12, B1/B12: GND: Digital ground
[0080] A4/A9, B4/B9: VBUS: A current for charging a battery of the
system is supplied.
[0081] The pins other than the above-described pins are
non-connection.
[0082] In the audio adapter accessory mode, the pins (A2/A3,
A10/A11, B2/B3, B10/B11, A4/A9, and B4/B9) other than the
above-described assignment pins are not used. Further, as in the
pins A6/B6, A7/B7, and the like, two pins are assigned to one
signal. The reason is that, whether the plug is forward-connected
or reverse-connected to the receptacle, an interference is
prevented from occurring. However, to each of the microphone and
the audio ground (or analog ground), only one pin is assigned in
accordance with limitation of the number of pins. Accordingly, in
the case of the forward connection, for example, the pin A8 and the
pin B8 are assigned to the microphone and the audio ground,
respectively. In the case of the reverse connection, for example,
the pin A8 and the pin B8 are assigned to the audio ground and the
microphone, respectively. As described above, the pin assignment is
not fixed on the microphone and the audio ground, and therefore it
is necessary to perform determination on the set side.
[0083] FIG. 5 illustrates an example of a configuration in which
the analog audio signal is transmitted through the USB Type-C
connection. An audio accessory 100 and a set (note PC or
smartphone) 200 are connected to each other through a plug PL0 and
a receptacle RE0. A headset speaker 101 is provided in the audio
accessory 100 and analog audio signals supplied through the pins of
D+ and D- are reproduced by using the headset speaker 101.
[0084] A switching circuit 201 is provided in the set side. The
switching circuit 201 is controlled by an output GPIO of a
detection device 204. The switching circuit 201 connects one of a
USB interface 202 and an audio codec 203 to data pins D+ and D- of
the receptacle RE0. Specifically, when the detection device 204
detects the audio adapter accessory mode, the audio codec 203 is
selected. When the detection device 204 does not detect the audio
adapter accessory mode, the USB interface 202 is selected. As
described above, when the short circuit between CC and VCONN is
detected, the detection device 204 determines that the mode is the
audio adapter accessory mode.
[0085] In addition, a microphone and audio ground determination
circuit 205 is provided. The microphone and audio ground
determination circuit 205 is a detection circuit that specifies the
microphone and audio ground regarding the pins A8 and B8. In
accordance with the configuration illustrated in FIG. 5, first, the
mode is detected by the detection device 204. Then, the switching
circuit 201 is controlled depending on the detection results.
Further, in the case of the audio adapter accessory mode, a pin for
the microphone and audio ground is decided.
[0086] In the above-described audio adapter accessory mode, the
present technology is aimed at enabling the RF signal to be
supplied to the set (receiving apparatus) while conforming to the
USB Type-C standard.
[0087] In the first embodiment of the present technology, two
ground pins that are positioned in a diagonal line direction are
used from among four ground pins to receive the RF signal in the
receptacle of the receiver. That is, the RF signal is supplied via
the pins A1 and B1 or the pins A12 and B12. By adopting the
above-described method, whether the plug is in the forward
connection or the reverse connection, and even if the RF signal is
input to the plug from one pin, the RF signal can be definitely
input.
[0088] Here, a connection relation between four ground pins is
described as follows.
[0089] At the time of the forward connection, the pin A1 on the
receptacle side and the pin A1 on the plug side, the pin B1 on the
receptacle side and the pin B1 on the plug side, the pin A12 on the
receptacle side and the pin A12 on the plug side, and the pin B12
on the receptacle side and the pin B12 on the plug side are
connected to each other.
[0090] At the time of the reverse connection, the pin A1 on the
receptacle side and the pin B1 on the plug side, the pin B1 on the
receptacle side and the pin A1 on the plug side, the pin A12 on the
receptacle side and the pin B12 on the plug side, and the pin B12
on the receptacle side and the pin A12 on the plug side are
connected to each other.
Configuration Example of the Conversion Cable According to the
First Embodiment
[0091] FIG. 6 illustrates a configuration of the conversion cable
according to the first embodiment. Similarly to FIG. 4, the jack 11
to which the headset is connected and the plug PL1 are connected to
each other through the cable. The headset has a configuration in
which earphones are connected to a round 4-pole plug inserted into
the jack 11 through the earphone cable. In addition, an earphone
cable in a ground line common to left and right channels is
provided. The jack 11 has the detection switch 13 that turns on
when the plug is inserted into the jack 11.
[0092] A left-channel signal line is drawn out from the electrode
12a of the jack 11 via an inductance device 15a and is connected to
at least one of the pins A7 and B7 of the plug PL1. A right-channel
signal line is drawn out from the electrode 12b of the jack 11 via
an inductance device 15b and is connected to at least one of the
pins A6 and B6 of the plug PL1. An audio ground line is drawn out
from the electrode 12c of the jack 11 via an inductance device 15c
and is connected to the pin A8 of the plug PL1. A microphone line
is drawn out from the electrode 12d of the jack 11 via an
inductance device 15d and is connected to the pin B8 of the plug
PL1.
[0093] A line drawn out from one contact point of the detection
switch 13 is connected to the pins A5 (CC) and B5 (VCONN) of the
plug PL1 via an inductance device 15e. A line drawn out from the
other contact point of the detection switch 13 is connected to the
pins A12 (GND) and B12 (GND) via the inductance device 15e. When an
audio plug of the headset is inserted into the jack 11, the
detection switch 13 turns on and the pins A5 (CC) and B5 (VCONN)
are short-circuited, and the audio adapter accessory mode is
thereby recognized. Note that the inductance devices 15a to 15f are
high-frequency cutoff devices such as inductors and ferrite beads
with which impedance becomes high and coupling in a line is
prevented at a desired band (e.g., a band of digital television
broadcasting).
[0094] Further, the cable that connects the jack 11 and the USB
Type-C plug PL1 has a shield line 14 made of a braided copper wire
in addition to the six lines described above. The shield line 14 of
the cable functions as a monopole antenna. For example, a length of
the cable is set to approximately .lamda./4 (.lamda.: wavelength of
a reception frequency). The shield line 14 is connected to the pin
B1 of the plug PL1. Accordingly, the antenna signal is supplied to
the pin B1 of the plug PL1. The pins A1 and B1 are pins that are
positioned in the diagonal line direction of the pin array.
[0095] The configuration in which the jack 11 and plug PL1
described above according to the first embodiment are connected
through a cable with a predetermined length acts as a cable with an
antenna. For example, sound of a program being viewed can be heard
by using the headset while receiving the television broadcasting by
using a receiver of the mobile terminal, etc. Accordingly, the
function of the USB Type-C interface of the receiver can be
expanded to transmission of the analog audio signal and that of the
antenna signal in addition to the high-speed data transmission.
Configuration Example on the Receiver Side According to the First
Embodiment
[0096] FIG. 7 illustrates a configuration relating to a receptacle
RE1 on the receiver side. In the first embodiment of the present
technology, the RF signal is transmitted via the pins A1 (GND) and
B1 (GND) that exist at diagonal positions when viewing the
receptacle (or the plug) from the front face. As described above,
the antenna signal functioning as the RF signal is supplied to the
pin B1 of the plug PL1. In the case where the plug PL1 is
forward-connected to the receptacle RE1, the antenna signal is
supplied to the pin B1 of the receptacle RE1. In the case where the
plug PL1 is reverse-connected to the receptacle RE1, the antenna
signal is supplied to the pin A1 of the receptacle RE1. That is,
whether the surface or the rear surface is set on the upper side,
the plug PL1 can be inserted into the receptacle RE1 and therefore
the antenna signal is input to the receiver from one of the pins A1
and B1 of the receptacle RE1.
[0097] The pin A1 of the receptacle RE1 is connected to a terminal
a of a switch 18 via a capacitor 17a. The pin B1 of the receptacle
RE1 is connected to a terminal b of the switch 18 via a capacitor
17b. An output terminal c of the switch 18 is connected to an input
terminal of an RF circuit RFC such as a tuner and an amplifier. The
capacitors 17a and 17b are capacitors for allowing necessary
frequencies to pass through and are wired as a high-frequency
transmission line of 50.OMEGA. on the input side of the
receiver.
[0098] The pin A1 of the receptacle RE1 is grounded via an
inductance device 16a and the pin B1 is grounded via an inductance
device 16b. The inductance devices 16a and 16b are high-frequency
cutoff devices such as inductors and ferrite beads with which the
impedance becomes high at a desired band (e.g., band of the digital
television broadcasting). Other than the audio adapter accessory
mode, the impedance of the inductance devices 16a and 16b is low,
and therefore the inductance devices 16a and 16b function as the
ground.
[0099] The switch 18 is switched by using a control signal. As an
example, the presence or absence of the antenna signal is detected
from the output signal of the switch 18. In the case where a signal
from the output terminal c of the switch 18 is the antenna signal,
a connection state of the switch 18 is kept as it is. In the case
where the antenna signal cannot be detected in the output terminal
c of the switch 18, the connection state of the switch 18 is
switched from the current state. The control signal may be formed
by using another method. For example, the control signal may be
formed in accordance with a detection of the forward connection or
reverse connection of the plug PL1.
[0100] Further, as a method for switching the switch 18, switching
can be performed by manual operation. For example, in the case
where the antenna signal cannot be detected in the output of the
switch 18, a pop-up screen indicating that it is impossible to
detect the antenna signal is displayed on a screen of a display
apparatus to thereby urge a viewer to switch the switch 18.
[0101] Meanwhile, in order to secure isolation from an antenna
input, common mode chalk coils TA1 and TA2 are connected to the
pins A2 and A3 and the pins A10 and A11, respectively, for
high-speed differential transmission approximate to the antenna
input terminal (pins A1 and B1). Similarly, common mode chalk coils
TB1 and TB2 are connected to the pins B10 and B11 and the pins B2
and B3, respectively, for the high-speed differential
transmission.
[0102] According to the above-described configuration (receptacle
RE1) on the receiver side, no matter what directions the plug PL1
connected to a cable having a function of the antenna cable is
connected in, the antenna signal can be received, the television
broadcasting can be received, and sound can be heard by using the
headset.
Configuration Example of the Cable According to the First
Embodiment
[0103] FIG. 8 illustrates a configuration example (plug PL2) of the
cable according to the first embodiment. The above-described
conversion cable has a configuration in which the jack 11 and the
plug PL1 are connected to each other via the cable. On the other
hand, the plug PL2 is configured such that no jack 11 (detection
switch 13) is provided. The pins A5 (CC) and B5 (VCONN) of the plug
PL2 are mutually connected to the pins A12 (GND) and B12 (GND) of
the plug PL2 in order to recognize the audio adapter accessory
mode.
[0104] Although not illustrated here, a substrate is connected to
the plug PL2 and an antenna signal input line 19 is formed on the
substrate. Although not illustrated here, an antenna device of
approximately .lamda./4 (.lamda.: wavelength of the reception
frequency) of frequency desired to be directly received is
connected to the antenna input line 19 to constitute the monopole
antenna. Note, however, that a length of the antenna device is
varied depending on the connected equipment and therefore the
antenna device does not necessarily need to have this length.
Further, the antenna signal may be directly input to the plug PL2
through a coaxial cable. Specifically, a core wire of the coaxial
cable is connected to the antenna signal input line 19 and the
antenna signal input line 19 is connected to the pin B1 of the plug
PL2. Although not illustrated, a shield line of the coaxial cable
is connected to GND pins, here, the pins A12 and B12, other than
the pins B1 and A1 that are positioned in the diagonal line
direction to constitute an RF line of 50.OMEGA.), etc. Further, the
RF connector, for example, an F connector can be connected to an
end opposite to the plug PL2 of the coaxial cable and further can
be connected to a television antenna mounted on the outside of
housing. Such a plug PL2 is also connected to the receptacle RE1
that is described with reference to FIG. 7 and the antenna signal
is transmitted.
2. Second Embodiment
Configuration Example of a Conversion Cable According to a Second
Embodiment
[0105] FIG. 9 illustrates a configuration of a conversion cable
according to a second embodiment. The jack 11 to which a headset is
connected and a plug PL3 are connected to each other through a
cable similarly to the conversion cable of the first embodiment
illustrated in FIG. 6. The headset has a configuration in which
earphones are connected to a round 4-pole plug inserted into the
jack 11 through an earphone cable. In addition, the earphone cable
in a ground line common to left and right channels is provided. The
jack 11 has the detection switch 13 that turns on when the plug is
inserted into the jack 11.
[0106] A left-channel signal line is drawn out from the electrode
12a of the jack 11 via the inductance device 15a and is connected
to at least one of the pins A7 and B7 of the plug PL3. A
right-channel signal line is drawn out from the electrode 12b of
the jack 11 via the inductance device 15b and is connected to at
least one of the pins A6 and B6 of the plug PL3. An audio ground
line is drawn out from the electrode 12c of the jack 11 via the
inductance device 15c and is connected to the pin A8 of the plug
PL3. A microphone line is drawn out from the electrode 12d of the
jack 11 via the inductance device 15d and is connected to the pin
B8 of the plug PL3.
[0107] A line drawn out from one contact point of the detection
switch 13 is connected to the pins A5 (CC) and B5 (VCONN) of the
plug PL3 via the inductance device 15e. A line drawn out from the
other contact point of the detection switch 13 is connected to the
pins A12 (GND) and B12 (GND) via the inductance device 15e. When
the audio plug of the headset is inserted into the jack 11, the
detection switch 13 turns on, the pins A5 (CC) and B5 (VCONN) are
short-circuited, and the audio adapter accessory mode is
recognized. Note that the inductance devices 15a to 15f are
high-frequency cutoff devices such as inductors and ferrite beads
with which impedance becomes high and coupling in a line is
prevented at a desired band (e.g., band of digital television
broadcasting).
[0108] Further, the cable that connects the jack 11 and the USB
Type-C plug PL3 has the shield line 14 made of a braided copper
wire in addition to the six lines described above. The shield line
14 of the cable functions as a monopole antenna. For example, a
length of the cable is set to approximately .lamda./4 (.lamda.:
wavelength of a reception frequency). The shield line 14 is
connected to the pins A1 and B1 of the plug PL3. The pins A1 and B1
are pins that are positioned in the diagonal line direction of the
pin array. Accordingly, an antenna signal is supplied to the pins
A1 and B1 of the plug PL3. Further, a length of a signal path of
branched portions by the pins A1 and B1 is made equal so that
lengths of RF signals are made equal.
[0109] The configuration in which the jack 11 and the plug PL3
described above according to the second embodiment are connected to
each other through a cable with a predetermined length acts as the
conversion cable. For example, sound of a program being viewed can
be heard by using the headset while receiving television
broadcasting by using a receiver of a mobile terminal, etc.
Accordingly, the function of the USB Type-C interface of the
receiver can be expanded to transmission of the analog audio signal
and that of the antenna signal other than high-speed data
transmission. A different point from the conversion cable according
to the first embodiment is that the antenna signal is supplied to
both of the pins A1 and B1.
[0110] FIG. 10 illustrates a configuration similar to that of FIG.
9. In FIG. 10, a coaxial cable 31 between the jack 11 (e.g., a
6-pole jack) and the plug PL3 is illustrated. A point at which the
shield line 14 of the coaxial cable 31 is connected to the pins A1
and B1 of the plug PL3 is a feeding point. The feeding point and
the pins A1 and B1 are connected to each other through a
high-frequency line of 50.OMEGA..
Configuration Example on the Receiver Side According to the Second
Embodiment
[0111] FIG. 11 illustrates a configuration relating to a receptacle
RE2 on the receiver side. In the second embodiment of the present
technology, the RF signal is supplied to both of the pins A1 (GND)
and B1 (GND) that exist at the diagonal positions when viewing the
receptacle (or the plug) from the front face. As described above,
the antenna signal functioning as the RF signal is supplied to the
pins A1 and B1 of the plug PL3. Whether the plug PL3 is forward- or
reverse-connected to the receptacle RE2, the RE signal is supplied
to the pins A1 and B1 of the receptacle RE2. That is, whether the
surface or the rear surface is set on the upper side, the plug PL3
can be inserted into the receptacle RE2 and therefore the antenna
signal is input to the receiver from both of the pins A1 and B1 of
the receptacle RE2. The second embodiment described above is
different from the first embodiment in that it is not necessary to
install a switch for switching the RF signal on the receiver
side.
[0112] The pin B1 of the receptacle RE2 is connected to an input
terminal of an RF circuit RFC such as a tuner and an amplifier
within the receiver via the capacitor 17b. Since the RF circuit
normally has one input terminal, the pin A1 of the receptacle RE2
to which the antenna side is connected is not connected to the
input terminal of the RF circuit. There is the possibility that a
physical length of a wiring regarding the pin A1 functions as a
stub of the signal line (line via the pin B1) and a necessary
frequency band is rejected. To solve the above problem, a stub 20
is connected to the pin A1 of the receptacle RE2 in order to make
adjustments so as to prevent a stub at the desired band. An
electric length (stub length) of the stub 20 is set to thereby
exclude an influence at the desired frequency band.
[0113] The pin A1 of the receptacle RE2 is grounded via the
inductance device 16a and the pin B1 is grounded via the inductance
device 16b. The inductance devices 16a and 16b are high-frequency
cutoff devices such as inductors and ferrite beads with which the
impedance becomes high at the desired band (e.g., band of the
digital television broadcasting). Other than the audio adapter
accessory mode, the impedance of the inductance devices 16a and 16b
is low, and therefore the inductance devices 16a and 16b function
as the ground.
[0114] Meanwhile, in order to secure the isolation from an antenna
input, the common mode chalk coils TA1 and TA2 are connected to the
pins A2 and A3 and the pins A10 and A11, respectively, for the
high-speed differential transmission approximate to the antenna
input terminals (pins A1 and B1). Similarly, the common mode chalk
coils TB1 and TB2 are connected to the pins B10 and B11 and the
pins B2 and B3, respectively, for the high-speed differential
transmission.
[0115] According to the above-described configuration (receptacle
RE2) on the receiver side, no matter what directions the plug PL3
connected to a cable having the function of the antenna cable is
connected in, the antenna signal can be received, the television
broadcasting can be received, and sound can be heard by using the
headset. Further, it is not necessary to select the RF signal by a
switch as in the first embodiment.
[0116] FIG. 12 illustrates a configuration similar to that of FIG.
11. In FIG. 12, a pin assignment (pins for use in the audio adapter
accessory mode excluding VBUS) of the pins omitted in FIG. 11 is
illustrated.
Antenna Gain According to the Second Embodiment
[0117] A peak antenna gain of the second embodiment described above
is obtained by a simulation and the results are illustrated in
FIGS. 13A and 13B. FIG. 13A illustrates the peak antenna gain in
the case in which the plug is forward-connected to the receptacle.
FIG. 13B illustrates the peak antenna gain in the case in which the
plug is reverse-connected to the receptacle. A horizontal axis
represents a frequency band: a UHF (Ultra High Frequency) band (470
to 800 MHz) at which terrestrial digital television broadcasting is
performed. A vertical axis represents a peak gain (dBd). dBd is a
value obtained by comparing with a dipole antenna. A relation of
(dBd=2.15 dBi) holds. dBi represents an antenna gain (absolute
gain).
[0118] In FIG. 13, graphs represented by signs 41H and 42H indicate
frequency-gain characteristics at the time of receiving
horizontally-polarized waves. Graphs represented by signs 41V and
42V indicate frequency-gain characteristics at the time of
receiving vertically-polarized waves. Tables 1 and 2 indicate data
in the graphs 41H and 41V and tables 3 and 4 indicate data in the
graphs 42H and 42V. As can be seen in FIG. 13, the antenna
according to the second embodiment of the present technology has no
performance difference between the forward connection and the
reverse connection and can receive television broadcast radio
waves.
TABLE-US-00001 TABLE 1 Vertical polarization Freq 470 520 570 620
670 720 770 906 [mHz] Peak -12.62 -12.37 -16.62 -14.93 -18.58
-20.20 -17.70 -20.00 [dBd]
TABLE-US-00002 TABLE 2 Horizontal polarization Freq 470 520 570 620
670 720 770 906 [mHz] Peak -4.09 -1.77 -2.31 -3.73 -4.98 -4.83
-6.10 -9.15 [dBd]
TABLE-US-00003 TABLE 3 Vertical polarization Freq 470 520 570 620
670 720 770 906 [mHz] Peak -13.96 -14.46 -14.82 -12.99 -16.43
-17.05 -17.90 -17.44 [dBd]
TABLE-US-00004 TABLE 4 Horizontal polarization Freq 470 520 570 620
670 720 770 906 [mHz] Peak -4.09 -1.66 -2.11 -3.53 -4.58 -4.25
-5.30 -6.84 [dBd]
Configuration Example of the Cable According to the Second
Embodiment
[0119] FIG. 14 illustrates another example (plug PL4) of the
configuration of the cable according to the second embodiment. The
conversion cable described above has a configuration in which the
jack 11 and the plug PL3 are connected to each other through the
cable. On the other hand, the plug PL4 is configured such that no
jack 11 (detection switch 13) is provided. The pins A5 (CC) and B5
(VCONN) of the plug PL4 are mutually connected to the pins A12
(GND) and B12 (GND) of the plug PL4 in order to recognize the audio
adapter accessory mode.
[0120] Although not illustrated here, a substrate is connected to
the plug PL4 and the antenna signal input line 19 is formed on the
substrate. In the substrate, the antenna signal input line 19 is
connected to both of the pins A1 and B1 of the plug PL4. Although
not illustrated here, an antenna device of approximately .lamda./4
(.lamda.: wavelength of the reception frequency) of a frequency
desired to be directly received is connected to the antenna input
line 19 to constitute the monopole antenna. Note, however, that a
length of the antenna device is varied depending on the connected
equipment and therefore the antenna device does not necessarily
need to have this length. Further, the antenna signal may be
directly input to the plug PL4 through a coaxial cable.
Specifically, the core wire of the coaxial cable is connected to
the antenna signal input line 19 and the antenna signal input line
19 is connected to both of the pins A1 and B1 of the plug PL4.
Although not illustrated here, the shield line of the coaxial cable
is connected to the GND pins, here, the pins A12 and B12, other
than the pins B1 and A1 that are positioned in the diagonal line
direction to constitute the RF line of 50.OMEGA., etc. The plug PL4
described above is also connected to the receptacle RE1 that is
described with reference to FIG. 7 or the receptacle RE2 that is
described with reference to FIG. 11, and the antenna signal is
transmitted.
[0121] Further, as illustrated in FIG. 15, the RF connector, for
example, an F connector 33 can be connected to an end opposite to
the plug PL4 of the coaxial cable 31 and can be connected to a
television antenna mounted on the outside of housing. Specifically,
a core wire of the F connector 33 is connected to a core wire of
the coaxial cable 31 and the shield line 14 of the coaxial cable 31
is connected to a shield part of the F connector 33. The shield
line 14 is equivalent to the antenna input line 19. The core wire
of the coaxial cable 31 is connected to the pins A1 and B1 through
the RF line of 50.OMEGA., etc. The shield line 14 of the coaxial
cable 31 is connected to the pins A5 (CC), A12 (GND), B5 (VCONN),
and B12 (GND). In the configuration illustrated in FIG. 15, the RF
line for an antenna input use is connected to the pins A1 and B1.
Alternatively, the RF line can be connected to one of the pins A1
and B1.
[0122] FIG. 16 is a graph indicating pass characteristics S21
obtained by the simulation of such a "USB Type-C-F connector
conversion cable." The cable to be measured is a cable into which a
capacitor is inserted for a lightning countermeasure and the
capacitor exerts an influence as a loss in the pass
characteristics. However, the loss is equal to or less than 3 dB in
the television band and is a problem-free level.
3. Third Embodiment
[0123] The first and second embodiments described above are applied
to an example in which a single RF signal is transmitted. By
contrast, a third embodiment is applied to a case in which a
plurality of RF signals are transmitted. In the case where a
plurality of antennas are used such as a diversity scheme and MIMO
(Multiple Input Multiple Output), it is necessary to transmit a
plurality of antenna signals.
Configuration Example of a Cable According to the Third
Embodiment
[0124] FIG. 17 illustrates a configuration example (plug PL5) of a
cable according to the third embodiment. The pins A5 (CC) and B5
(VCONN) of the plug PL4 are mutually connected to the pins A12
(GND) and B12 (GND) of the plug PL4 in order to recognize the audio
adapter accessory mode. Although not illustrated here, a substrate
is connected to the plug PL5 and two antenna signal input lines 21
and 22 are formed on the substrate. A diversity is constituted by
using the two antenna signal input lines. On the substrate, one
antenna signal input line 21 is connected to the pin B1 of the plug
PL5. Although not illustrated here, an antenna device of
approximately .lamda./4 (.lamda.: wavelength of the reception
frequency) of a frequency desired to be directly received is
connected to the antenna signal input line 21 to constitute a
monopole antenna. The other antenna signal input line 22 is
connected to the pin A1 of the plug PL5. Although not illustrated
here, an antenna device of approximately .lamda./4 (.lamda.:
wavelength of the reception frequency) of a frequency desired to be
directly received is connected to the antenna signal input line 22
to constitute a monopole antenna. Note, however, that lengths of
the two antenna devices are varied depending on the connected
equipment, and therefore the two antenna devices need not
necessarily have the length. Further, the antenna signal may be
directly input to the plug PL5 through a coaxial cable.
Specifically, core wires of two coaxial cables are connected to the
respective antenna signal input lines 21 and 22, and the antenna
signal input lines 21 and 22 are connected to the pins B1 and A1 of
the plug PL5, respectively. Although not illustrated here, the
shield lines of the two coaxial cables are connected to the GND
pins, here, the pins A12 and B12, other than the pins B1 and A1
that are positioned in the diagonal line direction to constitute
the RF line of 50.OMEGA., etc. Further, the RF connectors, for
example, F connectors can be connected to the respective ends
opposite to the plug PL5 of the two coaxial cables and can be
connected to respective external television antennas.
Configuration Example on the Receiver Side According to the Third
Embodiment
[0125] FIG. 18 illustrates a configuration relating to the
receptacle RE3 on the receiver side. In the third embodiment of the
present technology, two independent RF signals are supplied to
respective one of the pins A1 (GND) and B1 (GND) that exist at the
diagonal positions when viewing the receptacle (or the plug) from
the front face.
[0126] The pin A1 of the receptacle RE3 is connected to an input
terminal of a RF circuit RFC1 within the receiver via the capacitor
17a. The pin B1 of the receptacle RE3 is connected to an input
terminal of a RF circuit RFC2 within the receiver via the capacitor
17b. The RF circuits RFC1 and RFC2 perform reception by using the
diversity scheme. Note that a circuit that sets a connection
between the pins A1 and B1 and the two input terminals of the RF
equipment is provided in accordance with a direction (the forward
connection or the reverse connection) in which the plug PL5 is
connected to the receptacle RE3.
[0127] The pin A1 of the receptacle RE3 is grounded via the
inductance device 16a and the pin B1 is grounded via the inductance
device 16b. The inductance devices 16a and 16b are high-frequency
cutoff devices such as inductors and ferrite beads with which the
impedance becomes high at a desired band. The impedance of the
inductance devices 16a and 16b is low other than the audio adapter
accessory mode, and therefore the inductance devices 16a and 16b
function as the ground.
[0128] The common mode chalk coils TA1 and TA2 are connected to the
pins A2 and A3 and the pins A10 and A11, respectively, for the
high-speed differential transmission approximate to the antenna
input terminals (pins A1 and B1) in order to secure the isolation
from the antenna input. Similarly, the common mode chalk coils TB1
and TB2 are connected to the pins B10 and B11 and the pins B2 and
B3, respectively, for the high-speed differential transmission.
4. Modification Example
[0129] Although the embodiments of the present technology have been
specifically described, the present technology is not limited to
the above embodiments, and various modifications based on the
technical idea of the present technology can be made. For example,
the configurations, methods, processes, shapes, materials,
numerical values, etc. included in the above-described embodiments
are merely illustrative and configurations, methods, processes,
shapes, materials, numerical values, etc. different from the above
may be used if necessary. In the receptacle RE2 (FIG. 11) according
to the second embodiment, for example, the pins A1 and B1 to which
the RF signal is supplied may be mutually connected. Further, in
the descriptions above, an example in which the analog audio signal
is transmitted through a USB Type-C interface is described.
Further, the present technology is applicable to even a case in
which a D/A converter is provided in the audio accessory side and
digital audio data is transmitted through the USB Type-C
interface.
[0130] Note that the present technology may employ the following
configurations.
[0131] (1)
[0132] A receiver including: [0133] a connector into which a plug
can be inserted in either of one state of a surface and a rear
surface and another state in which the surface and the rear surface
are inverted, in which [0134] a first array including a plurality
of pins and a second array including a plurality of pins are formed
in the connector nearly in parallel, and [0135] both or one of a
first pin included in the first array and a second pin included in
the second array and positioned at a diagonal of the first pin is
set for input use of an RF signal.
[0136] (2)
[0137] The receiver according to (1) above, in which the first pin
and the second pin are ground terminals.
[0138] (3)
[0139] The receiver according to (1) or (2) above, in which in a
case where both the first pin and the second pin are set for input
use of the RF signal, both the first pin and the second pin are
connected to a ground via a high-frequency cutoff device having
high impedance in a frequency band of the RF signal and are
connected to an RF input terminal via a capacitor allowing the RF
signal to pass through.
[0140] (4)
[0141] The receiver according to any one of (1), (2), and (3)
above, in which both the first pin and the second pin are set for
input use of the RF signal, [0142] the receiver further including:
[0143] switching means that selects the RF signal from one of the
first pin and the second pin and supplies the RF signal to an RF
input terminal.
[0144] (5)
[0145] The receiver according to (4) above, in which [0146] the RF
signal is input to one of the first pin and the second pin, and
[0147] a level of the RF signal supplied to the RF input terminal
is detected and the switching means is switched in accordance with
a detection result.
[0148] (6)
[0149] The receiver according to any one of (1), (2), and (3)
above, in which in a case where the RF signal is input to both the
first pin and the second pin, the first pin and the second pin are
connected in common and are set for input use of the RF signal.
[0150] (7)
[0151] The receiver according to any one of (1), (2), and (3)
above, in which in a case where the RF signal is input to both the
first pin and the second pin, one of the first pin and the second
pin is set for input use of the RF signal and another of the first
pin and the second pin is adjusted by an adjustment of a wiring
length, an inductor, or a capacitor so as not to function as a stub
including lengths of the plug and the connector in a use band.
[0152] (8)
[0153] The receiver according to any one of (1), (2), and (3)
above, in which a plug specified by a USB Type-C standard can be
inserted into the connector.
[0154] (9)
[0155] The receiver according to (8) above, in which an audio
adapter accessory mode in which a CC pin and a VCONN pin are
short-circuited and that is specified by the USB Type-C standard is
used for input of the RF signal.
[0156] (10)
[0157] An RF signal supply apparatus including: [0158] a plug that
can be inserted into a connector in either of one state of a
surface and a rear surface and another state in which the surface
and the rear surface are inverted; and [0159] a cable that supplies
an RF signal to the plug, in which [0160] a first array including a
plurality of pins and a second array including a plurality of pins
are formed in the plug nearly in parallel, and [0161] both or one
of a first pin included in the first array and a second pin
included in the second array and positioned at a diagonal of the
first pin is set for supply use of the RF signal.
[0162] (11)
[0163] The RF signal supply apparatus according to (10) above, in
which the cable has a function of an antenna, and an output of the
antenna is supplied as the RF signal to both or one of the first
pin and the second pin.
[0164] (12)
[0165] The RF signal supply apparatus according to (10) or (11), in
which the plug is specified by a USB Type-C standard.
[0166] (13)
[0167] The RF signal supply apparatus according to any one of (10),
(11), and (12) above, in which a jack for headset connection use is
connected to the cable.
[0168] (14)
[0169] The RF signal supply apparatus according to any one of (10),
(11), and (12) above, in which a connector for RF signal
transmission use is connected to the cable.
REFERENCE SIGNS LIST
[0170] RE, RE1 to RE3 Receptacle [0171] PL, PL1 to PL5 Plug [0172]
RFC, RFC1, RFC2 RF circuit [0173] 11 Jack [0174] 13 Detection
switch [0175] 14 Shield line [0176] 18 Switch [0177] 20 Stub
* * * * *