JPH04330830A - Radio telephone device - Google Patents

Abstract

PURPOSE:To miniaturize this device, to improve a portability and to improve a receiving quality by housing two pairs of antennas for operating a diversity reception in the main body, and providing a microphone or the like at those antennas. CONSTITUTION:This device is equipped with a diversity circuit which operates the diversity reception based on received signals from first and second antennas 15 and 16, radio part which transmits and receives a transmitting and receiving signal, speaker 14 which converts the received signal from this radio part into an audible sound, and microphone 17 which converts the audible sound into a transmitted signal, and outputs it to the radio part. Then, this device is equipped with a radio telephone device main body 11 at which one of the first and second antennas 15 and 16 is provided so as to be elastic, and the diversity circuit, radio part, and one of the speaker 14 and the microphone 17, are provided. And also, this device is equipped with an extended part main body 13 which is provided so as to be freely extended to this radio telephone device main body 11, and at which the other of the first and second antennas 15 and 16, and the other of the speaker 14 and the microphone 17, are provided.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to radio telephone devices such as portable radio telephone devices.

0003

2. Description of the Related Art In recent years, there has been significant progress in reducing the size and weight of radio telephone devices, and portable radio telephone devices of a type that can be stored in a bag or the like have been developed and put into practical use.

[0004] Such a portable radio telephone device has a key part, a transmitting part, a receiving part, a radio part, and an antenna integrated into the main body, and can make and answer calls independently. It is considered possible.

By the way, in such a portable radio telephone device, as shown in FIGS. 7 and 8, a main body 3 having a key section 1 and a display section 2 is provided with a microphone 4 and a microphone 4 constituting a transmitting section and a receiving section. A speaker 5 is arranged to match the distance between a person's ear and mouth, and an antenna 6 is provided to protrude from the main body 3. Therefore, there is a problem that the size is too large to carry, and there is a demand for miniaturization.

[0006] Generally, the propagation path of a radio telephone device becomes a multi-wave propagation path because it is subject to reflection, interference, diffraction, etc. due to the surrounding environment, ie, the influence of obstacles such as buildings and mountains. And when the radiotelephone device moves,
There is a problem in that the electric field strength of a wireless signal in a multiwave propagation path fluctuates randomly in time and space, resulting in deterioration of reception quality.

[0007]

[Problems to be Solved by the Invention] As described above, conventional wireless telephone devices such as portable radio telephone devices have problems in that they are too large to carry, and also have problems with reception quality when used while moving. There was a problem with deterioration.

The present invention has been made to solve these problems, and provides a wireless telephone device that can be made smaller and more portable, and can also improve reception quality. It is intended to.

[Configuration of the invention]

0010

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a first method for transmitting and receiving signals.
a second antenna for receiving a received signal; a diversity circuit that performs diversity reception based on the received signals from the first and second antennas; a radio section that transmits and receives signals via an antenna; a speaker that converts the received signal from the radio section into an audible sound; a microphone that converts the audible sound into a transmission signal and outputs it to the radio section; a radiotelephone main body in which one of the first and second antennas is extendably provided, and the diversity circuit, the radio section, and one of the speaker or the microphone are provided;
The extension part main body is provided to be extendable with respect to the main body of the radio telephone device, and is provided with the other of the first or second antenna and the other of the speaker or the microphone.

[0011] The invention according to claims 3 and 4 is characterized in that the extension main body is extendable and retractable or rotatable with respect to the radio telephone device main body.

[0012] The invention as set forth in claim 5 is characterized in that an extension part accommodating recess for accommodating the extension part main body is formed in the radio telephone device main body.

[0013] The invention as set forth in claim 6 is characterized in that one of the first or second antenna extendably provided on the main body of the radio telephone device and the extension main body are pulled out or housed in conjunction with each other. It is something.

[0014]

[Operation] In the present invention, diversity reception is performed, and one antenna and one of a speaker or a microphone are provided on an extension main body that is freely extendable to the main body of a radio telephone device. Therefore, it is possible to reduce the size and improve portability, and at the same time, it is possible to improve reception quality.

Furthermore, if one of the first or second antennas extendably provided on the main body of the radio telephone device and the extension main body can be pulled out or housed in conjunction with each other,
It can save you the trouble of operation.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of embodiments of the present invention will be explained based on the drawings.

FIGS. 1 to 3 are external perspective views showing an embodiment in which the radio telephone device of the present invention is applied to a portable radio telephone device.

In these figures, reference numeral 11 indicates the main body of the wireless telephone device. One side 1 of the radio telephone device main body 11
An extension housing recess 12 is formed in 1a. The extension body 13, which is extendable and retractable with respect to the radio telephone device body 11, can be housed in the extension housing recess 12. Further, on one side 11a of the main body 11 of the radio telephone device, a speaker 14 constituting a receiver is disposed. Furthermore, a first antenna 15 is disposed on the opposite side of the main body 11 of the radio telephone device from the extension main body 13 so as to be extendable and retractable with respect to the main body 11 of the radio telephone device.

When making or answering a call, the extension main body 13 and the first antenna 15 described above are used in an extended state from the radio telephone device main body 11 as shown in FIG. In the standby state, as shown in FIG. 2, the extension body 13 is housed in the extension housing recess 12 of the radio telephone body 11, and the first antenna 15 is housed in the radio telephone body 11. shall be.

The extension main body 13 itself serves as a second antenna 16, and furthermore, a microphone 17 constituting a transmitting section is disposed at the distal end side of the extension main body 13. The above-mentioned speaker 14 and microphone 17 are attached to the radiotelephone main body 11 and the extension main body 13, and the extension main body 13 is extended from the radiotelephone main body 11 so as to correspond to the distance between a person's ear and mouth. They are placed at intervals.

[0021] Also, the other surface 1 of the radio telephone device main body 11
As shown in FIG. 3, a key section 18 and a liquid crystal display 19 are disposed in 1b.

Next, the configuration of the above-mentioned portable radio telephone device will be explained using the block diagram shown in FIG. Wireless telephone device body 1
1, a first antenna 15, a radio section 20 that forms a radio line and exchanges signals with a base station (not shown), a control section 21, and an audio section 22.
It consists of an audio/control section 23 that performs overall control of the entire device, a power supply control section 24 that controls power supply to each part, a rechargeable battery 25 that serves as a power source, an operation display section 26, and an audible sound output section. speaker 14, output amplifier 27,
The main part consists of an input amplifier 28.

Further, as described above, the extension main body 13 has a second antenna 16 itself, and a microphone 1 for inputting audible sound at the tip thereof.
7 are arranged.

The radio unit 20 described above has the first antenna 1
An antenna duplexer 29 for sharing 5 for transmission and reception, the first
a transmitting amplifier 30 that amplifies the transmitting signal transmitted from the antenna 15; a first receiving amplifier 31 that amplifies the received signal via the first antenna 15; intermediate frequency circuit (IF) 32,
A receiver (Rx) 33 that receives the received signal via the second antenna 16, a second receiving amplifier 34 that amplifies the received signal, and a second intermediate frequency circuit (Rx) that converts the received signal into an intermediate frequency. IF) 35, first or second IF3
It is comprised of a changeover switch 36 that selects one of the received signals of 2 and 35. Here, each electric field strength signal (RSSI signal) of the received signal inputted to the first and second intermediate frequency circuits (IF) 32 and 33 is inputted to the control unit 21. By comparing these RSSI signals, the control unit 21 controls switching by the changeover switch 36 so as to select the signal received by the antenna with the stronger field strength signal. That is, in the portable radio telephone device of this embodiment, the two antennas are spatially separated and receive waves are obtained independently.
Diversity reception is performed to selectively receive received waves with strong electric field strength.

The operation display section 26 also includes a key section 37 for performing predetermined key input, a display section 38 for displaying a predetermined display,
A switch section 39, a key section 37, where various switching is performed,
It is composed of an operation/display control section 40 that controls the display section 38 and the switch section 39. Specifically, the operation/display control section 40 performs overall control of the operation/display section 26 based on control signals sent from the audio/control section 23 and also controls signals input from the key section 37. Control signals and the like are sent to the audio/control section 23. In addition, the display section 38
consists of a liquid crystal display 19 and a display driver (not shown), and the display driver is connected to the operation/display control section 4.
The liquid crystal display 19 is driven based on the control of 0 to display a predetermined display. Furthermore, the key part 37 includes numerical keys "0" to "9", "*", "#", "SND", "STO",
"END", "RCL", "FNC", "CLR", "E
It consists of a keypad (not shown) such as function keys such as "MR", "MUTE", and "TONE", and when the keypad is pressed, this is recognized by the operation/display control section 40. Further, the switch section 39 is provided with an ON/OFF switch (not shown).

The output amplifier 27 amplifies the audible sound signal (voice signal) sent from the audio section 22 and outputs it to the speaker 1.
Output from 4.

The input amplifier 28 amplifies the audible sound signal (voice signal) input from the microphone 17. The amplified signal is input to the audio section 22.

Next, the operating procedure of the radio telephone device configured as described above will be explained.

First, when the device is in the standby state, as shown in FIG. 2, the extension body 13 is housed in the extension housing recess 12 of the radio telephone body 11, and the first antenna 15 is It is housed in the main body 11 of the wireless telephone device.

Further, when a call occurs in the above-mentioned standby state and when a call is to be answered, the extension main body 3 and the first antenna 15 are connected to the radio telephone main body 1 as shown in FIG.
1, and by performing a response operation on the key unit 18, a call is received.

[0031] Then, the user opens the surface 11b of the main body 11 of the wireless telephone device on which the key portion 18 and the liquid crystal display 19 are disposed.
While holding the speaker 14 of the wireless telephone device main body 11 to your ear, press the microphone 17 of the extension main body 13.
Place it near your mouth and make a call.

Furthermore, when making a call, as shown in FIG.
A call is made by inputting a telephone number and performing a calling operation at step 8, and then, as in the case of the above-mentioned response, the speaker 14 of the wireless telephone device main body 11 is placed to the ear, and
The microphone 17 of the extension main body 13 is placed near the mouth, and a call is made.

Therefore, in this embodiment, the extension body 13 is provided in the radiotelephone device main body 11 so as to be able to be housed and extended, the speaker 14 is provided in the radiotelephone device main body 11, and the microphone 17 is provided in the extension portion main body 13. Since the extension main body 13 is provided with the second antenna 16, the device can be effectively miniaturized, thereby improving the portability of the device. In addition, the first antenna 15
Since two sets of antennas (1 and 2 antennas 16 and 16) are provided to perform diversity reception, the reception quality caused by random spatial and temporal fluctuations in the electric field strength of the wireless signal in the multiwave propagation path is reduced. deterioration can be prevented.

It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the technical idea.

For example, in the above-described embodiment, the extension body 13 is extendable and retractable with respect to the wireless telephone device body 11, but as shown in FIG. It may be rotatably provided in the telephone device body 11, and the extension body 13 may be housed in the extension housing recess 12.

In addition, in the diversity reception of the above-described embodiment, the received signal by the antenna with the stronger field strength signal was selected, but an appropriate one is selected for each received signal depending on the strength of the field strength signal. They may be combined by weighting.

Furthermore, although the evaluation of the received signal in diversity reception was based on the field strength signal, it may be possible to evaluate the code error rate of the control signal etc. sent from the base station. .

Furthermore, in the above-described embodiment, an example was explained in which the main body of the radio telephone device is provided with a first antenna for both transmission and reception, and the extension main body is provided with a second antenna for exclusive use for reception. The second antenna may be provided on the extension body, and the first antenna may be provided on the extension main body.

Further, in the above-described embodiment, an example was explained in which a speaker was provided in the main body of the radio telephone device and a microphone was provided in the main body of the extension part. - It is also possible to have a configuration in which a force is provided.

[0040] Furthermore, one of the first or second antennas extendably provided on the main body of the radio telephone device and the extension main body may be linked to each other so that they can be pulled out or housed. FIGS. 6(a) to 6(c) are diagrams showing an example of such a case. As shown in the figure, within the radio telephone device main body 11, the extension main body 13 and the first antenna 15 are connected to the first and second wires 43, 44. Then, when the first antenna 15 is pulled out, the first wire 43
is pulled in the direction in which the extension main body 13 is pulled out via the first pulley 41. Therefore, the extension main body 13 is
When the first antenna 15 is pulled out, it is pulled out in conjunction with the first antenna 15. On the other hand, when the extension main body 13 is pulled out, the second wire 44 is pulled in the direction in which the first antenna 15 is pulled out via the second pulley 42. Therefore, the first antenna 15 is pulled out in conjunction with pulling out the extension main body 13. Note that FIGS. 6(a) to 6(c) sequentially show the state in which it is pulled out. In addition, accommodation is similarly performed in conjunction with the above structure. This saves the effort of pulling out or storing.

In the above embodiments, a portable radio telephone device has been described as the radio telephone device, but the present invention can also be applied to a portable vehicle-mounted radio telephone device, a cordless telephone device, and the like.

[0042]

Effects of the Invention As explained above, according to the present invention, diversity reception is performed, and one antenna and one speaker are connected to the extension main body which is extendable to the radio telephone device main body. Alternatively, since one of the microphones is provided, it is possible to achieve miniaturization and improve portability, and at the same time, it is possible to improve reception quality.

[Brief explanation of drawings]

FIG. 1 is an external perspective view for explaining an embodiment in which a radio telephone device of the present invention is applied to a portable radio telephone device;
This is the one in use.

FIG. 2 is an external perspective view for explaining an embodiment in which the radio telephone device of the present invention is applied to a portable radio telephone device;
This is when it was not used.

FIG. 3 is an external perspective view for explaining an embodiment in which the radio telephone device of the present invention is applied to a portable radio telephone device;
This shows the operation section.

FIG. 4 is a block diagram for explaining the configuration of the wireless telephone device in FIG. 1;

FIG. 5 is an external perspective view showing a wireless telephone device according to another embodiment.

FIG. 6 is an external perspective view showing a wireless telephone device according to another embodiment.

FIG. 7 is an external perspective view of a conventional wireless telephone device.

FIG. 8 is an external perspective view of a conventional wireless telephone device.

[Explanation of symbols]

11... Wireless telephone device main body 12... Extension housing recess 13……Extension body 14……Speaker 15……First antenna 16...Second antenna 17……Microphone 18……Key part 19……Liquid crystal display

Claims (6)

[Claims] 1. A first antenna for transmitting and receiving signals, a second antenna for receiving received signals, and diversity reception based on the received signals from the first and second antennas. a wireless section that transmits and receives signals through the first and second antennas, a speaker that converts the received signal from the wireless section into an audible sound, and a diversity circuit that converts the audible sound into a transmitted signal. a microphone that converts the signal into a microphone and outputs it to the wireless section, and one of the first and second antennas is extendable and retractable, and the diver
a wireless telephone device body provided with a wireless telephone circuit, the radio unit, and one of the speaker or the microphone; the other of the first or second antenna and the 1. A wireless telephone device comprising: an extension main body provided with the other of the speaker and the microphone. 2. A first antenna for transmitting and receiving signals, a second antenna for receiving received signals, and diversity reception based on the received signals from the first and second antennas. a wireless section that transmits and receives signals through the first and second antennas, a speaker that converts the received signal from the wireless section into an audible sound, and a diversity circuit that converts the audible sound into a transmitted signal. one of the first and second antennas, on which one of the speaker and the microphone is provided, is extendable and retractable, and the diversity circuit and the radio section an extension part that is extendable to the radiotelephone main body and is provided with the other of the first or second antenna and the other of the speaker or the microphone; A wireless telephone device comprising: a main body; 3. The radiotelephone device according to claim 1, wherein the extension main body is extendable and retractable with respect to the radiotelephone main body. 4. The radiotelephone device according to claim 1, wherein the extension main body is rotatable relative to the main body of the radiotelephone device. 5. The radiotelephone device according to claim 1, wherein the radiotelephone main body is formed with an extension accommodating recess for accommodating the extension main body. 6. The radiotelephone device according to any one of claims 1 to 5, wherein one of the first or second antenna extendably provided on the radiotelephone device main body and the extension main body are interlocked. A radiotelephone device characterized in that it can be withdrawn or housed.