JP3384751B2 - Mobile phone - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone, and more particularly to a mobile phone equipped with a pull-out antenna.

[0002]

2. Description of the Related Art Conventionally, in a mobile phone, a drawer type antenna which is retractably housed inside a housing of the mobile phone is often used. FIG. X shows an example of an external view of a mobile phone using a pull-out antenna. In FIG. 1A, a mobile phone 100 has an antenna 102 housed inside a housing 101. At this time, the antenna 102
The antenna 102 is housed so that the longitudinal direction of the antenna 102 is parallel to the front and side surfaces of the housing 101.

FIG. 1B shows an example in which the antenna 102 is extended in the mobile phone 100. In FIG. 2B, the antenna 102 extends vertically above the housing 101.

[0004]

By the way, in the above-mentioned portable telephone 100 of the prior art, when the operator puts his / her ear on the receiver 104 to talk, the distance between the operator's head and the antenna 102 becomes too close. The antenna 102 has a problem that the electromagnetic field level on the head side is lowered due to the influence of the head, resulting in deterioration of communication quality.

On the other hand, as shown in FIGS. Y (a) and (b), the antenna case 106 accommodating the antenna 102 is housed.
The antenna 1 by attaching the
There is a mobile phone 105 that solves the problem of communication quality deterioration by separating the operator 02 from the operator. However, mobile phone 1
In No. 05, since the antenna case 106 projects from the back surface 106, there is a problem that the storability is poor when it is stored in the operator's chest pocket or bag.

In view of the above problems, it is an object of the present invention to provide a mobile phone which has a good storability and which prevents a decrease in communication sensitivity.

[0007]

In order to solve the above problems, the mobile phone of the present invention determines whether or not a call is in progress.
And whether or not the earphone / microphone is connected
Whether the call is being made by the judging means and the judging means.
If it is determined that the earphone / microphone is not connected,
Only in the case, the antenna has a posture changing means for changing the posture of the antenna from the rear surface of the mobile phone body to the rear.

The determining means determines whether or not a call is in progress by detecting that the channel type of the transmission / reception signal used by the unit is a channel for a call .
The determination means detects the impedance between the electrode pair and the electrode pair provided on the side surface of the main body of the mobile phone that is in contact with the finger when the operator performs the outgoing / incoming operation, and from the value It is determined whether or not a call is in progress by using a detection unit that detects that the operator is using the call.

[0009] The determining means Ri Do from the driven member which is part of a human body of the operator is provided at a portion in contact when the operator a on the outer surface of the mobile phone body performs sending and receiving operation,
Determine whether or not a call is in progress by operating the driven member
It The driven member is a push button, and is configured to detect that the device is being used for a call by operating the push button.

The posture changing means includes a bullet for biasing the antenna backward and backward from the rear surface of the telephone body, and a first posture for holding the antenna in a normal posture along the rear surface of the telephone body against the biasing force of the bullet. It is characterized in that the driven member and the holding member are interlockingly connected to each other, and the holding member is switchable between the first state and the second state where the holding is released.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> A first embodiment will be described below.
The mobile phone in 1 is described with reference to the drawings. The mobile phone according to the present embodiment is configured such that the antenna, together with the antenna case, is tilted backward from the rear surface 112 of the mobile phone main body around the lower end of the antenna by pressing a button provided on the receiver.

FIG. 1 is an external view of a mobile phone according to this embodiment. As shown in the figure, the mobile phone 10 includes a housing 11 in which a transmission / reception circuit, a control circuit, etc. (not shown) are provided.
And an antenna case 13 accommodating an antenna 12 that is vertically expandable and contractible. More specifically, in the case 11 of the mobile phone 10, a numeric keypad, a handset, etc. are arranged on the front surface 111 of the housing 11, while a recess 113 is provided at the right corner of the back surface 112, and the antenna case 13 is provided in the recess 113. Is stored. Antenna case 1
3, the lower end portion is pivotally supported by a pin 131 at a portion near the lower end of the recess 113. With this pin pivot, the antenna case 13 is moved backward from the rear surface 112, that is, the front surface 111.
It is swingable in the direction away from.

The antenna 12 housed in the antenna case 13 is connected to the transmission / reception circuit inside the housing 11 through the pin 131. FIG. 2 is a side view showing the structure centering around the rotating portion of the antenna case 13 of the mobile phone 10. In the figure, the compression spring 114 is interposed between the antenna case 13 and the recess 113,
The antenna case 13 is elastically biased backward from the back surface 112 by the elastic force.

The button 20 as a driven member has a front surface 11
1 is projected from the vicinity of the receiver portion 115 above. The rod 2 extended from the button 20 toward the inside of the housing 11.
1 is supported by pins 210 to 213 so that the button 20 and the rod 21 can reciprocate in the longitudinal direction of the rod 21, and the button 20 is compressed by a compression spring 214.
Are urged so as to project from the front surface 111.

The position of the button 20 on the front surface 111 is near the receiver 115 as shown. This is to allow the button 20 to be pressed by the operator's ear or the head in the vicinity thereof when the operator uses the mobile phone 10 to make a call. Also, the front surface 111 of the button 20
The amount of protrusion from is set to an appropriate value so that a necessary stroke can be obtained by contact with the ear or the head.

A protrusion 215 is provided at the tip of the rod 21 and is engaged with a long hole 221 at one end of the L-shaped crank member 22. The center corner portion 222 of the L-shaped crank member 22 is pin-pivotally supported at a proper position of the mobile phone 10, and the L-shaped crank member 22 is pressed by pressing the button 20.
Is a mechanism that rotates around the central corner portion 222.

The other end of the L-shaped crank member 22 has the housing 11
It penetrates through the hole 116 on the wall surface and projects to the outside of the recess 113, and an engaging hook 223 is formed at the projecting tip. Housing 11 through which the L-shaped crank member 22 penetrates
A hole 132 for loosely inserting the L-shaped crank member 22 is also formed in the wall surface of the antenna case 13 corresponding to the hole 116 in the wall surface, and in a normal posture in which the antenna case 13 is housed in the recess 113, the L-shaped crank is formed. The engaging hook 223 at the other end of the member 22 enters the antenna case 13,
It is engaged with an engagement pin 133 provided inside the antenna case 13.

Due to the engagement between the engagement hook 223 and the engagement pin 133, the antenna case 13 is held in the recessed portion 113 against the restoring force of the compression spring 114. With this configuration, when the button 20 is pressed, its operation is transmitted from the engaging portion of the projection 215 of the rod 21 and the elongated hole 221 to the L-shaped crank member 22 to rotate the L-shaped crank member 22. As a result, the engagement between the engagement hook 223 and the engagement pin 133 is released. By this release, the antenna case 13 is tilted backward from the recessed portion 113 by the elastic force of the compression spring 114 to change its posture from the normal posture to the posture shown in FIG.

As described above, the mobile phone 10 of this embodiment
When the operator puts his / her ear on the receiver portion 115 to make a call during a call, the nearby button 20 is pressed by the operator's ear or head, and as a result, the antenna case 13 is Turn over like 3. Therefore, the antenna 12 housed in the antenna case 13 can avoid a change in the radiation characteristic due to the influence of the operator's head, so that the electromagnetic field level is not lowered by the operator's head and the deterioration of communication quality is prevented. can do.

After the call of the operator is completed, when the operator pushes the antenna case 13 from the back side, the engaging hook 22
3 and the engaging pin 132 are re-engaged and housed in the recess 113, the mobile phone 10 is in the normal posture, and the mobile phone 10 has a shape that can be easily stored in a storage place such as a chest pocket or a bag of the operator. <Second Embodiment> A mobile phone according to a second embodiment will be described below with reference to the drawings.

The mobile phone according to the present embodiment is in a call in a state where the earphone microphone is not used (that is, a state where the operator puts his / her ear on the receiver portion of the machine to make a call). When detected, the motor provided inside the mobile phone is driven to tilt the antenna together with the antenna case backward from the back of the mobile phone as in the first embodiment. In the present embodiment, an external view of the normal posture in which the antenna case of the mobile phone is housed in the recess is the same as that of FIG.

FIG. 4 shows the portable telephone 4 in this embodiment.
It is a block diagram which shows the structure of 0. In the figure, the mobile phone includes an antenna 41 and a TDD (Time Division Duplex).
x) transmission / reception switching unit 42 that performs transmission / reception switching, radio unit 43 that performs modulation / demodulation of baseband signal, signal amplification of transmission / reception signal, oscillation of carrier frequency, and π / 4 shift QPSK
Modem unit 44 that performs modulation / demodulation processing, TDMA (Time Divis)
ion multiple access) / voice encoding / decoding of voice input / output via the TDMA / TDD processing unit 45, the microphone 47 and the receiver 48 for performing time division multiplexing control by TDD, or via the earphone microphone (not shown). The voice processing unit 46, the operation unit 49 including various operation keys (including the call key 491) and the display, the control unit 50, the earphone microphone terminal 51, and the motor 52.

While the earphone microphone terminal 51 is connected to the earphone microphone terminal 51, the earphone microphone terminal 51 outputs a signal S0 = 1 to that effect to the CPU 500. The earphone microphone terminal 51 outputs the signal S0 = 0 to C while the earphone microphone is not connected to the earphone microphone terminal 51.
Output to PU500. The control unit 50 includes a CPU 500,
It has a ROM 501 and a RAM 502, and the CPU 500
By executing various programs recorded in the OM 501, control of the entire mobile phone 40 such as transmission / reception control is performed.

The CPU 500 holds a flag F = 1 indicating that a call is in progress from the time when the call key 491 is pressed from the operation unit 49 to the time when the line disconnection is detected next, and during the other time. , Flag F = 0 is held. Here, the call key 491 is a key for off-hook when making or receiving a call. Further, the CPU 500 receives the input of the signal S0 from the earphone microphone terminal 51.

The CPU 500 holds the flag F =
When 1 and the input signal S = 0, that is, when the call is in progress and the earphone microphone is not used, the instruction signal S1 instructing the motor 52 to drive the motor is output. . When the instruction signal S1 is input from the CPU 500, the motor 52 rotates the motor by a predetermined amount to turn over the antenna case.

FIG. 5 shows the portable telephone 4 in this embodiment.
It is a side view which shows the structure centering around the rotation drive mechanism of the 0 antenna case. The first embodiment and the second embodiment are largely different in whether the antenna case is changed to the tilted posture by using the elastic force of the compression spring or the driving force by the rotation of the motor.

That is, in this embodiment, the motor 5
2, the worm 522, the gear 524, the pinion 523, and the rack 54 are used to drive the rack 54 into the housing 5
5, the antenna case 53 is driven to the tilted posture by projecting outward from the rear side. As shown in FIG. 6, a slide button 57 provided on the outer wall surface of the housing 55 is used to store the tilted posture in the recessed portion 553.
Is slid, the rack 54 is moved upward, and the engagement with the pinion 523 is released.

That is, when the engagement between the rack 54 and the pinion 523 is released, the antenna case 53 and the recess 55 are formed.
The elastic force of the tension spring 556 interposed between the antenna case 53 and the three walls causes the antenna case 53 to return to the inside of the recess 553 by rotation. The connection between the slide button 57 and the rack 54 is shown in FIG.
(AA cross-sectional view of FIG. 5). That is, the base end of the slide button 57 is fixed to one side surface of the U-shaped frame 56, and the pin 561 which is horizontally mounted in the U-shaped frame 56 is inserted into the long hole 542 formed in the central portion of the rack 54. It has been inserted.

The U-shaped frame 56 is slidably supported above the bracket 557 fixed to the housing 55 through the slide shafts 564 and 565, and is constantly pressed downward by the coil springs 562 and 563. It is energized. As a result, unless the slide button 57 is operated upward, the rack 54 is meshed with the pinion 523.

The pinion 523 is the worm 522.
It is coaxially integrated with a gear 524 that meshes with. With the above-described configuration, the mobile phone 40 has the CPU 500
Detects that a call is in progress when the earphone / microphone is not used and outputs a signal for instructing the motor 52 to drive, and when the motor 52 receiving the instruction signal rotates a predetermined amount, the worm 522, the gear The rack 54, which is converted into rotation of the pinion 523 via the pin 524, moves in the longitudinal direction of the rack 54 toward the pin 532 while swinging around the pin 532 as a fulcrum. The antenna case 53 pivotally supported at 532 is turned backward from the back surface 552. Therefore, the antenna case 5
Since the antenna 533 housed in No. 3 can avoid the change of the radiation characteristic due to the influence of the operator's head, the electromagnetic field level is not lowered by the operator's head, and the mobile phone 40 communicates during a call. It is possible to prevent quality deterioration.

When the slide button 57 is pushed up by the operator after the antenna case 53 is turned down, the rack 54 is pushed up by the pin 561 and the engagement between the pinion 523 and the rack 54 is released, so that the tension spring 5
The elastic force of 56 becomes effective, and the antenna case 53 is housed in the recessed portion 553. In addition, since the operator does not put his / her ear on the receiver of the unit, the operator's head is Since the radiation characteristics are not affected, it is not necessary to tilt the antenna backward from the back surface of the mobile phone, and the antenna case 53 is not tilted from the back surface 552. For this reason, the present mobile phone 40 can store the antenna case 53 in the recessed portion 553 while the operator is not making a call or when making a call without using the earphone microphone. It has the advantage of being expensive.

In the present embodiment, the CPU 500
Is configured to detect pressing of the call key 491 from the operation unit 49, but the present invention is not limited to this. For example, a key different from the call key 491 may be used. For example, a key dedicated to instructing the turning operation of the antenna case 53 is provided on the surface of the side wall of the housing 55, and the CPU 500 outputs an instruction signal for instructing the motor 52 to drive the motor when detecting depression of the key by the operator. It may be configured to.

Further, in this embodiment, the CPU 500
Is configured to output an instruction signal for instructing the motor 52 to drive when it is in a call and not using the earphone microphone. However, it detects the start of a call and outputs an instruction signal to the motor 52. You may do it. That is, when the CPU 500 detects that the call key 49 has been pressed, or detects that a communication link channel has been established between the mobile phone and the base station in the area to which the mobile phone belongs, etc. An instruction signal may be output to the motor 52.

<Third Embodiment> A mobile phone according to a third embodiment will be described below with reference to the drawings. In the mobile phone according to the present embodiment, when a change in impedance between the electrode pairs attached to both side walls of the housing is detected, the motor is driven by the same mechanism as in the second embodiment to carry the antenna with the antenna case. It is configured to tilt backward from the back of the phone. In addition, in the present embodiment, the mechanism for tilting the antenna case is the same as that in FIG.

FIG. 8 shows a mobile phone 8 according to this embodiment.
It is a block diagram which shows the structure of 0. The figure shows the second embodiment.
4 in that the detection circuit 801 is provided in the configuration of FIG.
The difference is that a CPU 802 is provided instead of the PU 500. When a signal indicating that a change in impedance has been detected is input from the detection circuit 801, the CPU 802 outputs an instruction signal that instructs the motor 52 to drive.

As shown in FIG. 9, the detection circuit 801 includes a pair of electrode pairs 90 attached to each of the left and right side walls of the unit 80.
When detecting that the pair of electrodes 901 and 902 is conducted by the grip operation of the operator by the change in impedance, the detection signal is output to the CPU 802. Here, the electrode pairs 901 and 902 are attached in a slender shape from the upper part to the lower part of both side walls in order to support various grips of the operator during a call and improve the certainty of detection.

FIG. 10 is a circuit configuration diagram of the detection circuit 801. The circuit shown in the figure includes a resistor R906 and electrode pairs 901 and 9
02 and a comparator 907. With this configuration, the comparator 907 detects that a potential difference occurs at the resistance R when the electrode pair 901 and 902 is electrically connected by the grip operation of the operator during a call, and sends a detection signal to the CPU 802.

With the above configuration, when the detection circuit 801 detects that the operator grips the main body 80 during a call and a detection signal is output to the CPU 802, the mobile telephone 80 causes the CPU 802 to An instruction signal for instructing driving is output to the motor 52, and as a result, the motor 52 is driven.
The result is that the antenna case is rotated by a predetermined amount and the antenna case is turned over as in the second embodiment.

In this embodiment, the long and thin plate-shaped electrode pairs 901 and 902 are attached from the upper side to the lower side of both side walls of the machine, but the shape of the electrode pair and the portion to be attached are different. It is not necessary to limit to this embodiment. For example, the electrode pair may have a wide plate shape or a rod shape, or may be a position where the operator's ear on the front surface of the machine or a human body near the ear touches the machine.

In the present embodiment, the detection circuit 801
Is configured to detect a change in impedance.For example, a sensor such as a thermal sensor that detects that the operator's head or fingers are in a call state and is in contact with the mobile phone is used. May be. Further, in the mobile phone of the present invention, the CPU detects that the channel identification signal included in the transmission / reception signal is the communication channel, and in that case, the antenna case is rotated by the motor drive as shown in the second and third embodiments. It may be configured to be knocked down.

Further, in the first, second and third embodiments, the antenna case may be constructed by using a flexible member. In the first, second, and third embodiments, the mobile phone includes a detecting unit that detects that the unit is used for a call, and an attitude changing unit that changes the attitude of the antenna from the back surface of the mobile phone body to the rear when detected. Consists of
The detection means includes detection of pressing of a push button, detection of being in a call, detection of use of a communication channel, detection of contact with a human body, etc. Turn over the antenna case,
For example, the rotation of the motor was converted into a linear motion and the antenna case was turned down by pushing in a linear direction. In the present invention, each of the above-mentioned detecting means and each attitude changing means may be combined and implemented.

[0042]

The mobile phone of the present invention is in a call.
And whether or not the earphone / microphone is connected
The judging means for judging and the judging means are
And the earphone / microphone is not connected.
Only when the antenna is turned on, there is a posture changing means for changing the posture of the antenna from the back side of the mobile phone body to the rear side. With this configuration, the mobile phone of the present invention has an earphone microphone.
There is an effect that it is possible to prevent the deterioration of communication quality due to the influence of the operator's head on the antenna during a call without connection . Also, during a call with the earphone microphone connected
Is a mobile phone by not changing the attitude of the antenna
The effect is that the machine can be stored easily.

The determination means determines whether or not a call is in progress by detecting that the channel type of the transmission / reception signal used by this unit is a channel for a call.
With this configuration, the mobile phone of the present invention detects that this device is being used for a call according to the channel type of the transmission / reception signal. The determination means detects the impedance between the electrode pair and the electrode pair provided on the side surface of the main body of the mobile phone that is in contact with the finger when the operator performs the outgoing / incoming operation, and from the value Determine whether or not a call is in progress by using the detection unit that detects that the operator is using the call
To do .

With this configuration, the mobile phone of the present invention is
It is possible to detect that the operator is in contact with the mobile phone by the electrode pair provided at the position where the fingers are touched during a call, and this detection can detect that the operator is using this machine for a call. it can. Said means, a on the outer surface of the mobile phone main body operator Ri Do a driven member which is part of a human body of the operator is provided at a portion in contact with when performing sending and receiving operations, operation of the driven member Whether or not you are in a call
To judge.

With this configuration, the mobile phone of the present invention is
When the operator touches the mobile phone by calling,
By operating the driven member provided at the contact position, it is possible to detect that the device is used for a call. The driven member is a push button, and is configured to detect that the device is being used for a call by operating the push button.

With this configuration, this machine can detect that the mobile phone is being used for a call by operating the push button. The attitude changing means includes a bullet that biases the antenna backward and backward from the back surface of the telephone body, and a first state that holds the antenna in a normal attitude along the back surface of the telephone body against the biasing force of the bullet. It is characterized in that the driven member and the holding member are interlockingly connected to each other, and the holding member is switchable to the second state of releasing the holding.

With this configuration, in the present mobile phone, when the detecting means detects that the machine is being used for a call, the antenna is turned backward from the back against the biasing force of the ammunition. There is an effect that it is possible to prevent the deterioration of communication quality due to the influence of the operator's head on the antenna during a call.

[Brief description of drawings]

FIG. 1 is an external view of a mobile phone according to an embodiment.

FIG. 2 is a side view showing a structure around a rotating portion of an antenna case 13 of the mobile phone 10.

FIG. 3 is a diagram showing a tilted posture of an antenna case 13 of the mobile phone 10.

FIG. 4 is a block diagram showing a configuration of a mobile phone 40 according to the present embodiment.

FIG. 5 is a side view showing a structure centering around a tilt-down drive mechanism of an antenna case of the mobile phone 40 according to the present embodiment.

FIG. 6 is a diagram showing a slide button 57.

FIG. 7 is a detailed view of a connecting portion between a slide button 57 and a rack 54.

FIG. 8 is a block diagram showing a configuration of a mobile phone 80 according to the present embodiment.

FIG. 9 shows electrode pairs 901 attached to both side walls of the unit 80.
It is a figure which shows 902.

FIG. 10 is a circuit configuration diagram of a detection circuit 801.

11A and 11B are external views of a conventional mobile phone.

12A and 12B are external views of a conventional mobile phone.

[Explanation of symbols]

10 mobile phones 11 housing 12 antennas 13 antenna case 114 compression spring 20 buttons 21 rod 22 L-type crank member 113 recess 133 engagement pin

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-8-18478 (JP, A) JP-A-8-149034 (JP, A) JP-A-8-191210 (JP, A) JP-A-10- 209906 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04B 1/38-1/58 H01Q 1/08 H01Q 1/24 H04M 1/02

Claims (6)

(57) [Claims] 1. A phone call and whether or not a call is in progress.
A determination unit configured to determine whether microphone is connected, by the determination means, a busy and Iyahonma
A mobile phone characterized by having a posture changing means for changing the posture of the antenna from the back side to the rear side of the mobile phone body only when it is determined that the battery is not connected . 2. The determining means determines whether or not a telephone call is in progress by detecting that the channel type of a transmission / reception signal used by the unit is a channel for a telephone call. The mobile phone according to claim 1, wherein: 3. The determination means detects the impedance between the electrode pair provided on the side surface of the main body of the mobile phone, the electrode pair being provided at a portion that comes into contact with a finger when the operator performs an incoming / outgoing call operation. and, using a detector that detects that the operator is using a call from that value
The mobile phone according to claim 1, which is configured to determine whether or not a call is in progress . 4. The determination means comprises a driven member provided on a portion of the outer surface of the mobile phone body, which is in contact with a part of the human body of the operator when the operator performs a call originating / receiving operation.
It is possible to determine whether or not a call is in progress by the operation of the driven member.
Mobile phone according to claim 1, characterized in that a constant. 5. The mobile phone according to claim 4, wherein the driven member is a push button, and the operation of the push button detects that the device is being used for a call. 6. The attitude changing means includes a bullet for biasing the antenna backward and backward from the back surface of the telephone body, and holding the antenna in a normal attitude along the back surface of the telephone body against the biasing force of the bullet. The mobile phone according to claim 4, wherein the driven member and the holding member are interlockingly connected to each other, and each of the holding members includes a holding member that is switchable between a first state in which the holding member is held and a second state in which the holding member is released.