JPH03162022A - Portable radio equipment - Google Patents

Abstract

PURPOSE:To improve miniaturization and portability by providing a transmission unit and a removable main body unit providing a means converting a transmission signal from a microphone into an infrared-ray signal and sending the resulting signal. CONSTITUTION:A transmission unit 20 can be separated from a main body unit 10 and a transmission voice is sent to the main body unit 10 by a curl cord 30 or infrared rays. Moreover, the transmission unit 20 is shaped to be mated with the recessed part 12 of the main body unit 10, and a microphone 21 is fitted so as to attain the transmission from the bottom face and the front face. Then a connector 22 is fitted to the upper part of the main body unit 20 so as to make correspondent with the connector 13 and an infrared-ray LED is provided on the connector 22 so that it corresponds to the infrared-ray photodiode of the main body unit 10 and the curl cord 30 is connected with the infrared rays. Thus, the miniaturization and the portability are improved.

Description

[Detailed description of the invention] Industrial applications TECHNICAL FIELD The present invention relates to a portable wireless device.

2. Description of the Related Art Hitherto, as this type of portable wireless device, one is known that is equipped with a speaker and a microphone in a case similar to a typical telephone handset, as well as circuits and dial keys necessary for wireless communication. This portable radio has a speaker and a microphone with a longitudinal size and shape that correspond to the user's ear and mouth, respectively, and the recommended distance between them is based on recommendations from Nippon Telegraph and Telephone Corporation (NTT) and CCIT.
It has been presented by T. et al.

Further, as another portable radio device, a structure is known in which the portion of the portable radio device including the microphone is foldable with respect to other portions, and is folded when in standby and unfolded when making a call. In this case as well, the distance between the microphone and speaker when expanded is
This is close to the CITT recommendation.

Problems to be Solved by the Invention However, in the above-mentioned conventional portable radio devices, since the speaker and microphone are provided in the housing so as to correspond to the user's ears and mouth, there is a limit to miniaturization, and portability is limited. There is a problem that it is bad.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a portable wireless device that can be downsized and have improved portability.

Means for Solving the Problems In order to achieve the above-mentioned objects, the present invention makes the transmitter unit and main unit detachable, and includes a microphone and a means for converting the transmitter signal from the microphone into an infrared signal and transmitting the infrared signal. A circuit for wireless communication in the transmitter unit,
The main unit is equipped with means for converting an infrared signal from a transmitting unit into an audio signal and outputting it to this wireless circuit, and a speaker that converts a receiving signal from this wireless circuit into audio.

Effects According to the present invention, with the above-described configuration, it is possible to make a call by separating the transmitting unit and the main unit and facing the user's mouth and ears, respectively, thereby making it possible to reduce the size and improve portability.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a front view showing one embodiment of the portable radio device according to the present invention, FIG. 2 is a right side view showing the portable radio device of FIG. 1, and FIG.
The figures are a bottom view showing the portable radio device in Figure 1, Figures 4 and 5.
The figures are an explanatory diagram showing the state of use of the transmitting unit shown in FIG. 1, and FIG. 6 is a block diagram showing the portable radio device shown in FIG. 1.

Figures 1 to 3 show the main unit 10 and the transmitter unit 2.
0 is attached, and FIGS. 4 and 5 show that
The figure shows a state in which the main unit 10 and the transmitting unit 20 are separated.

In FIGS. 1 to 5, the main unit 10 has a speaker 11 installed above it for receiving calls, and the sending unit 20 is separable from the main unit 1o, and transmits the sending audio using a curl cord 30 or infrared rays. selectively transmits the data to the main unit 10.

As shown in FIG. 4, below the main body unit 10, there are formed four substantially rectangular parallelepiped parts 12 for accommodating the transmitting unit 20, and a connector 13 is attached to the bottom surface of the recess 12. The connector 13 includes an infrared photodiode (described later) for receiving a transmitting infrared signal from the transmitting unit 20, and is configured to connect the curl cord 30 from the transmitting unit 20 using infrared rays. .

Although not shown, a terminal for supplying power for charging to the transmitting unit 20 is also attached to the bottom surface of the recess 12, and a terminal for supplying power for charging to the transmitting unit 20 is attached to each of the side walls forming the recess 12. A locking hole and the like for detachably attaching the talking unit 20 are formed.

The speech transmission unit 20 is formed in a shape corresponding to the recess 12 of the main unit 10, and a microphone 21 is attached so that speech can be transmitted from the bottom and the front. The connector 13 of the main unit 10 is connected to the upper part of the transmitter unit 2o.
A connector 22 corresponding to the connector 22 is attached, and the connector 22
is provided with an infrared LED (described later) to correspond to the infrared photodiode of the zero body unit 10, and is configured to connect the curl cord 30 with infrared rays. 23 is a tie pin for attaching the transmitter unit 20 to the user's clothing; the tie pin 23 is
The transmitter unit 20 is attached so that its upper and lower sides are reversed.

The curl cord 30 is attached with a spring-like stretching mechanism 31 that contracts when the transmitting unit 20 is attached to the main unit 10 and expands when the transmitting unit 20 is separated from the main unit 10. There is.

Although not shown, a power terminal for receiving power from the power terminal of the main unit 10 is also attached to the transmitting unit 20, and the power terminals of the zero body unit l-10 and the transmitting unit 20 are connected to each other. , are biased so that they are pressed against each other.

The transmitting unit 2o is further provided with locking pieces that can be engaged with the locking holes of the main unit 1o, so that the user can disengage the locking holes and the locking pieces. , the main unit IO and the transmitter unit 20 can be separated.

Another infrared LED is attached to the bottom of the transmitting unit 20. Therefore, if the main unit 10 and the transmitting unit 2o are separated and the transmitting unit 20 is installed upside down in a pocket or the like, Main unit 1
0 is placed near the ear, the microphone 20 faces the mouth, and the infrared LEDs each face the infrared photodiode of the main unit 10.

Also attached to the front and rear sides of the main unit 20 are a key group (described later) consisting of various function keys including a dial key and a hook switch key, and a display device (described later) for displaying dial numbers and the like.

Next, the circuit configuration of the portable wireless device will be explained with reference to FIG.

The transmitting unit 20 includes a modulator 24 for converting an audio signal from a microphone 21 into a digital signal, converting it into an infrared signal, and driving an infrared LED provided in a connector 22, and internal circuits such as the modulator 24. When the battery 25, which serves as the power source, is attached to the main unit 10,
It has a switch 26 that connects the charging power source from the main unit 10 to the battery 25 and connects the battery 25 to the internal circuit when it is separated from the main unit 10.

The main body unit 10 controls the entire portable radio, particularly detects the operation status of the key group 41, and controls the display 42.
a central processing unit (CPU) 43 that performs display control, a microstrip antenna 44, a duplexer 45 that uses the antenna 44 for both transmission and reception, and a reception unit that converts received signals to low frequencies, etc. 46 and an amplifier 47 that amplifies the audio signal and outputs it to the speaker 11.

The main unit 10 also includes a demodulator 49 that converts the signal received via the infrared photodiode provided in the connector 13 into an analog signal and demodulates it into an audio signal, and a demodulator 49 that converts the signal received via the infrared photodiode provided in the connector 13 to an audio signal, and converts the audio signal from the microphone 21 and the demodulator 48 into an analog signal. An amplifier 49 for amplification, a transmitter 50 for converting audio signals into high frequencies, a power amplifier 51 for amplifying high frequencies, a synthesizer (SYN) 52 for performing MCA communication, and a battery 5.
3rd prize. Therefore, since the power intensifier 51, which consumes the most power in a portable radio, is provided in the main unit 10, the power consumption of the transmitter unit 20 can be reduced.

Next, the operating method of the above embodiment will be explained.

First, in the standby mode, the main unit 10 and the transmitter unit 20 can be carried in a pocket, handbag, etc. with the main unit 10 and the transmitting unit 20 attached.

When making a call, the main unit 10 and the transmitting unit 20 are attached, and when the user receives a call, the main unit 1o is attached.
By placing the speaker 11 near the ear and placing the microphone 21 of the speaking unit 2o near the mouth when transmitting a call, it is possible to make a call, so the speaker 11 and the microphone 2l are separated, It is possible to make calls as is, and therefore it can be made smaller.

In addition, when the main unit 10 and the transmitting unit 20 are separated during a call, the main unit 10 and the transmitting unit 20
are electrically connected via the curl cord 30, the user places the main unit 10 against his ear with his left hand, holds the transmitting unit 20 upside down with his right hand, and holds the microphone 21. By flipping it upward, you can make calls.

Furthermore, the user connects the curl cord 3 to connectors l3 and 22.
Since the transmitter unit 20 can be removed from the user's pocket and attached to a pocket, collar, etc., the hand holding the transmitter unit 20 can be used freely.

In the above embodiment, charging and power supply of the internal battery 25 are switched only by the switch 26 in the transmitting unit 20. However, when receiving a call start signal or an answer signal from the main unit 10, the battery An electronic switch for switching 25 to the power supply side may be separately provided. in this case,
Transmitting unit}2 even though the user is not on a call
When 0 is separated, consumption of the battery 25 can be prevented.

In the above embodiment, the main unit 10 and the transmitter unit 20 are connected via the curl cord 30, but FIG.
As shown in FIG. 8, the connection may be made via a flexible cord 30a that can be accommodated within the main unit 10a.

In FIGS. 7 and 8, 21a is the microphone of the transmitting unit, 22a is a connector attached to the tie pin 23a and for connecting the flexible cord 30a, and 26 is a connector for transmitting audio signals to the main body using infrared rays. Infrared light L for sending to the infrared photodiode 27 of the unit
This transmitter unit has the same function as the transmitter unit 20 of the embodiment described above.

Effects of the Invention As explained above, the present invention makes the transmitting unit and the main unit detachable, and the transmitting unit is equipped with a microphone and a means for converting a transmitting signal from the microphone into an infrared signal and transmitting it. , the main unit is equipped with a circuit for performing wireless communication, a means for converting an infrared signal from a transmitting unit into an audio signal and outputting it to this wireless circuit, and a speaker for converting a reception signal from this wireless circuit into audio. Therefore, by separating the transmitting unit and the main unit and placing them facing the user's mouth and ears, respectively, it is possible to make a telephone call, thereby making it possible to reduce the size and improve portability.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the portable radio according to the present invention, FIG. 2 is a right side view showing the portable radio shown in FIG.
Figure 3 is a bottom view showing the portable radio device in Figure 1; Figure 4;
5 is an explanatory diagram showing the usage state of the transmitting unit shown in FIG. 1, FIG. 6 is a block diagram showing the portable wireless device shown in FIG. 1, and FIGS. It is an explanatory view showing a modification of a unit. 10...Main unit, 11...Speaker, Engineering 3.
・・Connector (infrared photodiode), 20...
Transmission unit, 21... Microphone mouthpiece, 22... Connector (infrared LED), 23... Tie pin, 24...
... Modulator, 30... Curl cord, 3oa... Flexible cord, 31... Stretching mechanism, 48...
...Demodulator.

Claims (3)

[Claims] (1) A microphone for transmitting speech, a transmitting unit equipped with means for converting a transmitting signal from the microphone into an infrared signal and transmitting the same, a circuit for wireless communication, and an infrared signal from the transmitting unit. What is claimed is: 1. A portable radio device comprising: means for converting a voice signal into an audio signal and outputting it to the wireless circuit; and a speaker for converting a reception signal from the wireless circuit into voice, and having a main body unit that is detachably attached to the transmitter unit. (2) The portable wireless device according to claim (1), wherein the microphone of the transmitting unit and the main unit are connected via an extendable and detachable cord. (3) Claim (1) wherein the transmitting unit includes a tie pin.
) or the portable wireless device described in (2).