JPH09167977A - Portable radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the speaker using a hearing aid perform a speech in a canfortable state by preventing the noise sound caused by the radio waves transmitted from the antenna of a portable radio equipment from entering the ears of the speaker using the hearing aid even if the speaker who puts the hearing aid in his ears uses the portable radio equipment such as a digital portable radio equipment. SOLUTION: When an operation panel 5 is operated and the starting of a speech is instructed in a state that an auxiliary antenna is inserted into the connector part 8 of a body 2, a main antenna 3 is made a non-use state, the use of the auxiliary antenna 7 is started, the radio line with a base station is established, the voice information inputted from a microphone 6 is transmitted to a speech destination, the voice information from the speech destination is received and voice is produced from a speaker 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TDMA type portable wireless device such as a digital portable wireless device, and more particularly to an improvement of a portable wireless device which prevents noise from occurring in the hearing aid when the portable wireless device is used with a hearing aid. Regarding

[0002]

2. Description of the Related Art In a mobile communication system generally used at present, TDMA (Time Division Multiple A) is used.
ccess) method, a base station provided for each cell is wirelessly connected to a digital portable wireless device configured to be movable between these cells, and these base stations are connected. And support calls to and from digital handheld wireless devices. At this time, for the purpose of improving frequency utilization efficiency, in Japan, when the base station and each digital portable radio device are connected by the above-mentioned TDMA method, the same frequency is used in each cell and the base station The time axis is divided between each of the digital portable wireless devices and each of the digital portable wireless devices to enable communication between the plurality of digital portable wireless devices and the base station. Further, in the mobile communication system used in Japan, a cycle of 20 mS, which is called a full rate method, is used by each of the three digital mobile wireless devices, and each digital mobile wireless device uses a transmission section of 6.6 mS. , Is used. For this reason, each digital portable wireless device performs transmission in the transmission interval assigned to itself and repeats the operation of suspending transmission in a non-transmission interval other than this transmission interval at a cycle of 20 mS, which is an intermittent transmission. Do.

[0003]

By the way, in the above-mentioned digital portable radio apparatus, as shown in FIG. 6, the upper side of the casing 101 formed to have a size that can be carried by a caller,
That is, when the upper and lower relations of the casing 101 are determined so that the direction of characters displayed on the liquid crystal display 102 provided on the casing 101 can be correctly read, the casing 1
When the digital portable radio device 100 is placed on a desk or the like by providing the antenna 103 at the upper end of 01 and making the lower end of the casing 101 flat. The device 100 is prevented from becoming unstable. When making a call, as shown in FIG. 7, the microphone 104 provided on the lower side of the casing 101 forming the digital portable radio device 100 faces the mouth 108 of the caller 106 and the upper portion of the casing 101. The speaker 105 provided on the side is the ear 107 of the caller 106.
Hold the digital portable wireless device 100 so as to face the user and make a call. Therefore, when the caller 106 wears the hearing aid 109 on the ear 107, the antenna 103 of the digital portable wireless device 100 and the ear 107 of the caller 106 are attached.
The hearing aid 109 attached to is too close to the radio wave, and the radio wave transmitted from the antenna 103 enters the amplification circuit in the hearing aid 109 and is pseudo-detected by the transistor circuit inside the amplification circuit, which is a kind of radio interference. A problem called "amplifier interference" occurs, and the modulation component contained in the high-frequency component of the radio wave enters the ear 107 of the caller 106 as low-frequency noise, making it difficult to talk. It was Particularly, in the digital portable radio apparatus 100, the radio wave transmitted from the antenna 103 is 50 Hz (50 [Hz] = 1/20 [mS]).
Since it becomes a burst wave with a period, it is included in the modulation component.
Due to the influence of the component of Hz, there is a problem that a sound of “boom” is continuously heard in the ear of the caller 106.
In view of the above circumstances, the present invention provides an antenna of a mobile wireless device to the ear of a caller who uses a hearing aid even if the caller wearing the hearing aid in his ear uses a mobile wireless device such as a digital mobile wireless device. It is possible to prevent noise noise caused by radio waves transmitted from the device from entering, and thereby to provide a portable wireless device that allows a caller who is using a hearing aid to make a call in a comfortable state. Is intended.

[0004]

In order to achieve the above object, the present invention relates to a caller having the casing by transmitting and receiving radio waves to and from the base station side by a main antenna arranged above the casing. In a portable wireless device that supports a call with a person at the other end of the call, when an auxiliary antenna is detachably or protrudingly placed under or under the housing, and the auxiliary antenna is in a usable state. The main antenna is used to stop transmitting and receiving radio waves, and the auxiliary antenna is used to transmit and receive radio waves to and from the base station side.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a front view showing an example of a digital portable radio apparatus to which an example of the portable radio apparatus according to the present invention is applied. The digital portable radio apparatus 1 shown in this figure has a casing 2 formed to have a size that can be carried by a caller 21 (see FIG. 4), and an upper portion of the casing 2.
A main antenna 3 which is provided in a retractable manner and receives a radio wave transmitted from a base station and transmits a radio wave to the base station, and a speaker which is provided on an upper side of the casing 2 and outputs a voice from a callee. 4, an operation panel 5 provided in the central portion of the cabinet 2 and serving as a man-machine interface with the caller 21, and provided below the cabinet 2 to receive the voice of the caller 21 A microphone 6 for generating a signal, an auxiliary antenna 7 configured to be attachable to and detachable from the housing 2 for receiving radio waves transmitted from a base station and transmitting radio waves to the base station, and the housing 2 A connector portion 8 provided at a lower portion and into which the auxiliary antenna 7 is inserted; and a processing substrate 9 provided in the housing 2 and performing communication processing with a base station according to an operation content of the operation panel 5. Equipped with That.

When the operation panel 5 is operated to instruct the start of a call with the auxiliary antenna 7 not inserted in the connector portion 8 of the housing 2, the main antenna 3 is used to operate the base station. Establishes a wireless line with and transmits the voice information input from the microphone 6 to the call destination,
Upon receiving voice information from the call destination, a voice is output from the speaker 4. Further, the operation panel 5 is operated while the auxiliary antenna 7 is inserted in the connector portion 8 of the housing 2,
When the call start is instructed, the auxiliary antenna 7 is used to establish a wireless line with the base station, the voice information input from the microphone 6 is transmitted to the call destination, and the voice information from the call destination is received. , The voice is output from the speaker 4.

In this case, the connector portion 8 has a rectangular recess 10 formed in the lower portion of the casing 2 as shown in FIG.
A connector pin (male connector) 11 fixed to the bottom portion (upper portion in FIG. 2) of the recess 10 and a switch pin 12 that is mounted inside the housing 2 so as to project from the bottom portion in a retractable manner. A switch 14 of a closed type, and when the rectangular base portion 15 constituting the auxiliary antenna 7 is inserted into the recess 10, the base portion 15 is provided.
The switch pin 12 is pushed into the inside by the end of the switch 14, the switch 14 is opened, the circuit between the processing substrate 9 and the main antenna 3 is cut off, and the connector pin 11 is released. The processing substrate 9 is inserted into a female connector 16 provided in the base portion 15
And the auxiliary antenna 7 are electrically connected.

Further, the processing board 9 receives a reception signal (RF signal) obtained by receiving a radio wave from the base station side by the main antenna 3 or the auxiliary antenna 7 as shown in FIG. And a transmission / reception switching circuit 17 for performing a process of taking in a radio wave from the main antenna 3 or the auxiliary antenna 7 through the connector section 8 and a reception output from the transmission / reception switching circuit 17 The reception electric field level value and the reception error rate estimated value are obtained by taking in the signal, and the reception processing circuit 18 for demodulating the reception signal and the processing contents of the reception processing circuit 18 and the operation contents of the operation panel 5 are included in the reception processing circuit 18. Based on the received content, a process for controlling the operation of the entire digital portable wireless device 1, a process for outputting a voice or the like from the speaker 4, Rohon voice input from 6 performs processing such as conversion to the transmission data control circuit 19
Then, the transmission data output from the control circuit 19 is converted into a transmission signal (RF signal) of the transmission power specified value output from the control circuit 19, and the process of supplying the signal to the transmission / reception switching circuit 17 is performed. And a processing circuit 20.

Then, when the operation panel 5 is operated and the transmission / reception operation is designated, the transmission / reception switching circuit 17 receives the radio wave transmitted from the base station side and the voice transmitted from the base station side. Information is output from the speaker 4 and a transmission signal is generated based on the voice input from the microphone 6 or the like, and a radio wave based on transmission power or slot time difference is generated based on the notification content included in the radio wave. The transmission signal is transmitted to the base station side. If the auxiliary antenna 7 is not inserted into the connector portion 8 of the housing 2, the main antenna 3 transmits and receives radio waves to and from the base station, as shown in FIG. Auxiliary antenna 7 on connector part 2 of 2
If is inserted, the main antenna 3 is not used and the auxiliary antenna 7 transmits and receives radio waves to and from the base station.

At this time, the main antenna 3 and the auxiliary antenna 7
The energy of the radio wave radiated from is inversely proportional to the square of the distance, and the distance "L" between the main antenna 3 and the ear 22 of the speaker 21 is "L".
Since the distance "L2" between the auxiliary antenna 7 and the ear 22 of the caller 21 is larger than 1 ", even when the hearing aid 23 is attached to the ear 22 of the caller 21, compared to when the main antenna 3 is used. The value of the energy transmitted from the auxiliary antenna 7 to the hearing aid 23 can be reduced to “(L2 / L1) 2”, and the ear of the caller 21 using the hearing aid 23 can hear the digital portable wireless device 1 It is possible to prevent noise noise caused by the radio wave transmitted from the auxiliary antenna 7 from entering, so that the caller 21 using the hearing aid 23 can talk in a comfortable state. .

As described above, in this embodiment, the main antenna 3 is operated when the operation panel 5 is operated and the call start is instructed in a state where the auxiliary antenna 7 is not inserted in the connector portion 8 of the housing 2. To establish a wireless line with the base station, transmit voice information input from the microphone 6 to the call destination, receive voice information from the call destination, and output voice from the speaker 4, and also an auxiliary antenna. When the operation panel 5 is operated and an instruction to start a call is given in a state in which 7 is inserted in the connector portion 8 of the housing 2, the main antenna 3 is set to the non-use state and the auxiliary antenna 7 is used to Since the wireless line is established, the voice information input from the microphone 6 is transmitted to the call destination, and the voice information from the call destination is received and the voice is output from the speaker 4. Also party 21 the hearing aid 23 is mounted is using a mobile wireless device such as a digital portable radio device 1, the ear 22 of the party 21 using a hearing aid 23,
It is possible to prevent the noise sound caused by the radio wave transmitted from the auxiliary antenna 7 of the digital portable radio device 1 from entering, and thus the caller 2 who uses the hearing aid 23
1 can make a call in a comfortable state.

Further, in the above-mentioned embodiment, a general omnidirectional antenna is used as the auxiliary antenna 7. However, as shown in FIG. 5, when the caller 21 is talking, the hearing aid 23 is used. A directional antenna 24 having directivity that does not radiate radio waves to the side may be used as the auxiliary antenna 7. By doing so, the noise component mixed in the hearing aid 23 is further reduced as compared with the above-described embodiment, and the caller 21 who wears the hearing aid 23 on the ear 22 operates the portable wireless device such as the digital portable wireless device 1. Even if it is used, it is possible to prevent the noise sound caused by the radio wave transmitted from the auxiliary antenna 7 of the digital portable radio device 1 from entering the ear 22 of the caller 21 using the hearing aid 23. This allows the caller 21 using the hearing aid 23 to make a call in a comfortable state. Further, in each of the above-described embodiments,
The auxiliary antenna 7 is detachably attached to the housing 2, but when the auxiliary antenna 7 is housed in the housing 2 and a button provided on the side of the housing 2 is pressed, the main antenna 3 The circuit between the substrate and the processing substrate 9 may be cut off, and the end portion of the auxiliary antenna 7 may be projected downward from the inside of the housing 2. Even in this case, the caller 21 pulls out the end portion of the auxiliary antenna 7 to make it have a specified length, so that the auxiliary antenna 7 can be used, and the same effect as that of the above-described embodiment can be obtained. Obtainable.

[0013]

As described above, according to the present invention, even if a caller wearing a hearing aid in his ear uses a mobile wireless device such as a digital mobile wireless device, the ear of the caller who uses the hearing aid. In addition, it is possible to prevent noise noise caused by radio waves transmitted from the antenna of the mobile wireless device from entering, which allows the caller who is using the hearing aid to talk in a comfortable state. it can.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a digital portable wireless apparatus to which an example of the portable wireless apparatus according to the present invention is applied.

FIG. 2 is a partial cross-sectional view showing a detailed configuration example of a connector portion and an auxiliary antenna portion shown in FIG.

3 is a block diagram showing an example of a detailed circuit configuration example of the digital portable wireless device shown in FIG.

FIG. 4 is a usage pattern diagram showing a usage example of the digital portable radio apparatus shown in FIG.

FIG. 5 is a usage pattern diagram showing an example of a digital portable radio apparatus to which another example of the portable radio apparatus according to the present invention is applied.

FIG. 6 is a front view showing an example of a conventional digital form telephone device.

7 is a usage pattern diagram showing a usage example of the digital portable wireless device shown in FIG. 6. FIG.

[Explanation of symbols]

1 digital portable radio device, 2 housing, 3 main antenna, 4 speaker, 5 operation panel, 6 microphone, 7 auxiliary antenna, 8 connector part,
9 processed substrate, 10 recess, 11 connector pin,
12 switch pins, 14 switches, 15 bases, 16 female connectors, 17 transmission / reception switching circuits,
18 reception processing circuit, 19 control circuit, 20 transmission processing circuit, 21 caller, 22 ears, 23 hearing aid, 24 antenna

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H04R 25/00 H04B 7/26 B

Claims (1)

[Claims] 1. In a portable radio apparatus of the TDMA system for transmitting and receiving radio waves with a main antenna arranged on an upper part of a housing, an auxiliary antenna is detachably or projectably arranged on a lower part of the housing, and the auxiliary antenna is provided. A portable wireless device, wherein when the mobile phone is in a usable state, the transmission and reception of radio waves by the main antenna is stopped, and the transmission and reception of radio waves by the auxiliary antenna.