JP3568875B2 - Portable wireless telephone - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable wireless telephone, and more particularly to a portable wireless telephone having a function of inputting / outputting voice from both front and back sides of a telephone and enabling two persons to talk with each other together using both sides.
[0002]
[Prior art]
Heretofore, this type of wireless portable telephone has been constructed and handled as one-to-one communication between callers. It is also possible to use an unspecified number of people by using a speaker on the receiving side and increasing the sensitivity of the microphone on the transmitting side. In this case, there is an advantage that the caller can talk hands-free without having the handset, and can move freely within a range where the microphone can collect sound.
[0003]
Further, as a system for intervening an interpreter when a language is not communicated between the parties, there is a "phone microphone for a mobile phone which can be used for an interpreter system and a translation system" disclosed in Japanese Patent Laid-Open No. 10-32893. . FIG. 6 is a diagram showing an example of use of the mobile phone microphone.
[0004]
This uses a branch-type phone microphone F having a plurality of phone microphones 65 that can receive a voice through the mobile phone 61 by listening to the receiving voice of the mobile phone 61 from the listening unit 63 and speaking from the microphone unit 64. . The branch phone microphone F is connected to the connection part 62 of the mobile phone 61 so that a call can be made with the interpreter A via the mobile phone 61, and the phone microphone 65A of one of the branch phone microphones F needs to be translated. The interpreter C, who is attached to the person B and receives the other phone microphone 65B, interprets it, and the portable telephone 61 allows the three persons A, B, and C to simultaneously talk.
[0005]
However, the method of talking with an unspecified number of people using the above-mentioned hands-free mobile phone requires a high microphone sound collection sensitivity, and is inevitably weakened to noise. Further, since the speaker unit is also suitable for an unspecified number of people, it is unsuitable when only two people who need to protect privacy use it together.
[0006]
On the other hand, the above-mentioned “phone microphone for a mobile phone that can be used for the interpreting system and the translation system” makes a call by connecting the branch phone microphone F to the connection portion 62 of the mobile phone 61, so that the branch phone microphone is used. It is necessary to carry F at all times. In addition, the wires of the branch type phone microphone F at the time of use are troublesome. In addition, since multiple microphones are used, microphone sensitivity may need to be adjusted.Since the function of operating microphone sensitivity is not a function provided in all mobile phones, it lacks versatility. there were.
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and has a function of inputting and outputting audio from both the front and back surfaces of a portable wireless telephone, so that a portable telephone can talk together with another party. An object is to provide a wireless telephone.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a speaker for outputting a reception sound and a microphone for inputting a transmission sound on both front and back surfaces of the telephone, and simultaneously making a call from the front and back surfaces of the telephone. The portable radio telephone has a function capable of performing the operation, and a rotatable or slidable shield plate for shielding the front surface of the speaker and the microphone mounted on the back surface .
[0009]
As described above, the shielding plate that shields the front surface of the speaker and the microphone is rotatably or slidably provided. By covering the front surface of the speaker and the microphone with the shielding plate, noise and a large number of people in the conventional mobile phone can be used. It can be used like a wireless telephone. Also, a speaker and a microphone are mounted on both the front and back sides of the telephone, and a function is provided for simultaneously talking from the front and back sides of the telephone, so that two people can talk with each other together.
[0010]
According to a second aspect of the present invention, in the portable wireless telephone according to the first aspect, a changeover switch is provided in a driving circuit for driving a speaker and a microphone mounted on the back side of the telephone, and the speaker and the microphone are separated from the driving circuit. It is characterized in that it can be separated.
[0011]
As described above, since the speaker and the microphone mounted on the back side of the telephone can be separated from the drive circuit, the speaker and the microphone mounted on the back side are made inoperative and used in the same manner as the conventional portable radio telephone. be able to.
[0014]
According to a third aspect of the present invention, in the portable wireless telephone according to the first aspect, a sound hole through which sound passes is provided in place of a speaker and a microphone mounted on the back side of the telephone, and mounted on the front side through the sound hole. A speaker sound is output, and a transmission sound is input to a microphone mounted on the front side.
[0015]
As described above, the speaker and microphone mounted on the back side of the telephone are provided with sound holes through which sound passes, and the speaker and microphone mounted on the front side are shared with the back side, so that both sides can talk at the same time. A wireless telephone can be provided at low cost.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 are views showing the appearance of a portable radio telephone according to the present invention. FIG. 1 (a) shows a front view, FIG. 1 (b) shows a rear view, and FIGS. (b) is a diagram showing a side view. As shown in the figure, the portable radio telephone 1 according to the present invention includes a fixed part 10 and two movable parts 11 and 11 located below the fixed part 10. The movable parts 11 and 11 are bent around the hinge mechanism in directions opposite to each other.
[0019]
A speaker 2, a display 6, a function key 7, and a dial key 8 are arranged and mounted on the front (front) part of the fixed part 10, and an antenna 9 for transmission and reception is mounted on the upper part. The speaker 3 is arranged and mounted on the back surface of the fixed part 10. The microphone 4 is arranged and mounted on the front part of the movable part 11 on the front side. The microphone 5 is arranged and mounted on the front surface of the movable section 11 on the back side.
[0020]
The speaker 2 converts the received signal into a sound and outputs the sound. The display 6 performs operation display and information display at the time of transmission / reception, the function key 7 is a key such as a switch 7-1 for the speaker 3 and the microphone 5 and a mode switch key, and the dial key 8 is a key for performing a dial operation. is there.
[0021]
The speaker 3 and the microphone 5 can be turned on / off by a changeover switch 7-1 as described later in detail. Further, as shown in FIG. 2 (b), the movable parts 11 and 11 are bent in opposite directions about the hinge mechanisms 12 and 12 into a "-" shape, and the microphone 4 is moved toward the mouth of the user on the front side. The microphone 5 can be brought closer to the mouth of the user on the back side to enhance the sound collection effect.
[0022]
FIG. 3 is a diagram showing a circuit configuration of a voice input unit of the portable wireless telephone 1. As shown in the figure, the speaker 2, the speaker 3, the microphone 4, and the microphone 5 of the voice input unit are connected to the communication unit 21 and the control unit 20 via the call LSI 22.
[0023]
The reception signal is amplified by the amplifier 22-3 from the communication unit 21 and output to the speaker 2, and the voice input signal input from the microphone 4 is amplified by the amplifier 22-5 and transmitted to the communication unit 21. Further, the reception signal is amplified by the amplifier 22-3 from the communication unit 21 through the switch 22-1 and output to the speaker 3. The audio input signal input from the microphone 5 is amplified by the amplifier 22-6 and transmitted to the communication unit 21 via the switch 22-2. The on / off control of the switch 22-1 and the switch 22-2 is operated from the changeover switch 7-1 via the control unit 20.
[0024]
As described above, according to the portable wireless telephone 1 having the above configuration, the speakers 2 and 3 are arranged and mounted on the front and back surfaces of the fixed unit 10, and the microphone 4 is arranged and mounted on the front surface of the movable unit 11 on the front side. Since the microphone 5 is arranged and mounted on the front surface of the movable part 11 on the side, it is possible for two persons to talk with the other party together from both sides. Further, by providing the microphone 4 and the microphone 5 on the movable portion 11, the sound collecting effect is increased and the usability is improved. Further, when using alone, the speaker 3 and the microphone 5 on the back side are turned off by the changeover switch 7-1, so that the mobile phone can be used in a place with much noise similarly to the conventional portable radio telephone.
[0025]
FIG. 4 is a side view showing another appearance of the portable radio telephone 1 according to the present invention. As shown in the figure, in the portable wireless telephone 1, an appropriate speaker 3 and a microphone 5 are provided on the back surface, and a shielding plate 30 for shielding the front surfaces of the speaker 3 and the microphone 5 is provided rotatably by a hinge mechanism 31. I have. Thus, when the portable wireless telephone 1 is used alone, the front face of the speaker 3 and the microphone 5 is covered with the shielding plate 30, so that the reception sound is output from the back side or the noise is input to the microphone 5. There is no.
[0026]
In the portable radio telephone 1 shown in FIG. 4, a voice hole is provided on the back of the mobile radio telephone 1 in place of the speaker 3 and the microphone 5, and the speaker 2 and the microphone 4 mounted on the front through the voice hole from the back are shared. By doing so, a portable wireless telephone having a function of enabling two-way communication can be easily realized at low cost.
[0027]
5A and 5B are views showing another appearance of the portable radio telephone according to the present invention. FIG. 5A shows a state in which the sound hole is closed by a shield plate, and FIG. Is shown. As shown in the drawing, a slidable shield plate 41 is provided on the back surface of the portable wireless telephone 1, and the shield plate 41 is configured to cover or open the front surfaces of the speaker 3 and the microphone 5 mounted on the back surface. I have.
[0028]
A claw member 42 is attached to the back surface of the portable radio telephone 1 so as to be rotatable about a fulcrum shaft 45, and the tip of the claw member 42 is inserted into a locking hole 43 provided in the shielding plate 41. The mobile phone 1 is always urged by a spring (not shown) or the like to press the back surface of the mobile phone 1. A pressing member 47 is provided on one side of the shielding plate 41 so as to protrude therefrom. The shielding plate 41 is urged by a coil spring 44 so as to slide in a direction to open the front surfaces of the speaker 3 and the microphone 5.
[0029]
When the front surfaces of the speaker 3 and the microphone 5 are covered with the shielding plate 41, the pressing member 47 is pressed against the speaker 3 and the microphone 5 so that the shielding plate 41 slides against the tensile force of the coil spring 44, and the shielding plate 41 is moved. In a state in which the speaker 3 and the microphone 5 are slid by a predetermined amount so as to cover the front surfaces thereof, the hooks of the claw members 42 are inserted into the locking holes 43, and as shown in FIG. 5 is locked with the front face closed. To open the front surfaces of the speaker 3 and the microphone 5, the rear end of the claw member 42 is pressed to release the hook at the tip of the claw member 42 from the locking hole 43, and the shielding plate 41 is pulled by the coil spring 44 and slides. Then, the front surfaces of the speaker 3 and the microphone 5 are opened as shown in FIG.
[0030]
When the portable radio telephone 1 has the configuration shown in FIG. 5, the same operation and effect as those of the portable radio telephone having the configuration shown in FIG. 4 can be obtained. If a voice hole is provided on the back surface of the mobile wireless telephone 1 in place of the speaker 3 and the microphone 5, and the speaker 2 and the microphone 4 mounted on the front surface are shared through the voice hole from the back surface, a function that allows a call from both sides is provided. A portable wireless telephone can be easily realized at low cost.
[0031]
As described above, according to the embodiment of the present invention, it is necessary to adjust the receiving and transmitting levels as in the conventional hands-free system since two people can talk to the other party together from the front and back of the telephone. No, it can be used in a noisy place in the city like a conventional mobile phone. Also, the trouble of connecting a conventional branch phone microphone is eliminated.
[0032]
【The invention's effect】
As described above, according to the invention described in each claim, the following excellent effects can be obtained.
[0033]
According to the first aspect of the present invention, the shield plate for shielding the front surfaces of the speaker and the microphone is rotatably or slidably provided. Can be used in the same way as a conventional portable radio telephone. Also, a speaker and a microphone are mounted on both the front and back sides of the telephone, and a function is provided for simultaneously talking from the front and back sides of the telephone, so that two people can talk with each other together.
[0034]
According to the second aspect of the present invention, the speaker and the microphone mounted on the back side of the telephone can be separated from the drive circuit. It can be used like a wireless telephone.
[0036]
According to the third aspect of the present invention, a sound hole through which sound passes is provided in place of the speaker and microphone mounted on the back side of the telephone, and the speaker and microphone mounted on the front side are used in common with the back side. In addition, it is possible to provide a low-cost portable wireless telephone that can simultaneously talk on both sides.
[Brief description of the drawings]
FIG. 1 is a view showing the appearance of a portable radio telephone according to the present invention, wherein FIG. 1 (a) is a front view and FIG. 1 (b) is a rear view.
FIGS. 2A and 2B are views showing the appearance of the portable wireless telephone according to the present invention, wherein FIG. 2A is a side view showing a state in which the movable part is closed, and FIG. 2B is a side view showing a state in which the movable part is opened. FIG.
FIG. 3 is a circuit diagram of a voice input unit of the portable wireless telephone according to the present invention.
FIG. 4 is a side view showing the appearance of the portable wireless telephone according to the present invention.
5A and 5B are diagrams showing the appearance of the portable radio telephone according to the present invention, wherein FIG. 5A is a rear view showing a state in which a speaker and a mask front surface are covered by a shielding plate, and FIG. FIG. 4 is a rear view showing a state in which is opened.
FIG. 6 is a diagram showing an example of use of a conventional mobile phone microphone.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mobile radiotelephone 2 Speaker 3 Speaker 4 Microphone 5 Microphone 6 Display 7 Function key 8 Dial key 9 Antenna 10 Fixed part 11 Movable part 20 Control part 21 Communication part 22 Calling LSI
Reference Signs List 30 shield plate 31 hinge mechanism 41 shield plate 42 claw member 43 locking hole 44 coil spring 45 fulcrum shaft 47 pressing member

Claims (3)

A speaker for outputting a reception sound and a microphone for inputting a transmission sound are mounted on both sides of the front and back sides of the telephone, and a function is provided for simultaneously talking from the front and back sides of the telephone. A portable wireless telephone, wherein a shielding plate for shielding a front surface is provided rotatably or slidably. The mobile wireless telephone according to claim 1,
A portable wireless telephone, wherein a switch is provided in a drive circuit for driving a speaker and a microphone mounted on the back side of the telephone, so that the speaker and the microphone can be separated from the drive circuit. The mobile wireless telephone according to claim 1,
An audio hole through which sound passes is provided in place of the speaker and microphone mounted on the back side of the telephone, and a receiving sound of the speaker mounted on the front side is output through the audio hole, and a transmission sound is transmitted to the microphone mounted on the front side. A portable radio telephone characterized by inputting a password.

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