JPH0576150U - Microphone adapter device for cordless handset - Google Patents

Abstract

(57) [Summary] [Purpose] Use the cordless handset as a single unit when portability is required, and connect the cordless handset and microphone adapter as a suitable one for calls when portability is not required so much. To do. [Structure] When the lower part of the handset 1 is inserted into the recess 7 of the microphone adapter 6, the connection terminal 5 of the handset 1 and the connection terminal 8 of the microphone adapter 6 are electrically connected, and the microphone of the microphone adapter 6 is connected. The voice collected by 9 is converted into an electric signal and sent to the transmitting circuit.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a microphone adapter device attached to a cordless telephone handset.

[0002]

[Prior Art]

 Generally, cordless telephone handsets tend to be more portable, and recently, for example, lightweight, small handsets that can be carried in a pocket are on the market.

[0003]

[Problems to be solved by the device]

 In this way, cordless handset handsets that emphasize portability are convenient for carrying calls and carrying around. However, when actually using the above-mentioned cordless handset, the distance between the microphone and the earpiece is short due to the design in pursuit of small size and light weight. Therefore, the user listens to the earpiece of the cordless handset. If you touch it, the microphone is located away from your mouth, and the user feels uncomfortable when you talk on the phone.Because the microphone is away from your mouth, it becomes easier to pick up ambient sounds other than the user's voice. There was a problem that it would end up.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, a microphone adapter device for a cordless telephone handset according to claim 1 of the present invention has a handset incorporating a microphone and an earpiece, and a detachable detachable microphone attached to the other handset. And a connecting means for electrically connecting a microphone with a built-in microphone adapter to a transmitter circuit of the slave unit when the slave unit and the microphone adapter are connected to each other.

In addition to the above configuration, the microphone adapter device for a cordless telephone handset according to claim 2 separates the microphone built in the handset from the transmitter circuit when the handset and the microphone adapter are connected. It will be.

[0006]

[Action]

 By connecting a cordless telephone handset with a microphone adapter with a built-in microphone, the user can use the earpiece and the microphone in a position relationship suitable for a call, and at that time, the handset Since the built-in microphone is separated from the transmission circuit, ambient sounds other than the user's voice are not picked up.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of a microphone adapter and a cordless telephone handset according to the present invention. The cordless telephone slave unit 1 has a key input section 2, an earpiece 3, and a microphone 4 built-in, and a connection terminal 5 for electrically connecting to a microphone adapter 6 is provided on the bottom surface of the cordless phone 1. ..

On the other hand, the microphone adapter 6 has a recess 7 into which the lower part of the slave unit 1 is detachably fitted, and a connection terminal 8 electrically connected to the connection terminal 5 of the slave unit 1 is formed on the bottom surface of the recess 7. Is equipped with. A microphone 9 is provided at the end of the microphone adapter 6 on the opposite side of the recess 7, and the microphone 9 and the connection terminal 8 are connected to each other.

FIG. 2 shows an internal circuit of the microphone adapter device.

The microphone 4 of the handset 1 and the microphone 9 of the microphone adapter 6 are capacitor microphones, and the condenser microphone is an element that converts an acoustic signal into an electrical signal by inputting a DC bias. .. The slave unit 1 is provided with DC bias and decoupling resistors 10, 11, 12, 13 and decoupling capacitors 14, 15 and the resistors 10, 11, the capacitor 14 and the resistors 12, 13 are provided. , Capacitor 15 supplies bias to microphones 4 and 9, respectively.

When the slave unit 1 is used alone, since the connection terminal 5 of the slave unit 1 is free, the base terminal of the switching transistor 16 is in a high level state and the transistor 16 is turned off. Along with this, the base terminal of the mute transistor 17 is brought into a low level state, so that the transistor 17 also becomes OFF. Therefore, the voice is collected by the microphone 4, converted into an electric signal, and sent to the transmitting circuit.

Next, when the microphone adapter 6 is fitted and connected to the lower part of the handset 1 with the recess 7, the connection terminal 5 of the handset 1 is connected to the connection terminal 8 of the microphone adapter 6. The base terminal of the switching transistor 16 is in a low level state, and the transistor 16 is turned on. Along with that, the base terminal of the mute transistor 17 becomes a high level state, and the transistor 17 is turned on. The voice is collected from both the microphones 4 and 9, but the electrical signal of the voice collected from the microphone 4 is muted transistor 17 is ON because of the above-mentioned configuration. It falls from the collector terminal through the emitter terminal to the ground terminal. Therefore, only the voice collected from the microphone 9 of the microphone adapter 6 is converted into an electric signal and sent to the transmitting circuit.

As described above, when the cordless telephone handset is carried or is required to be portable, the user can use the handset 1 by itself, and when portability is not so required, the child is used. By connecting the microphone adapter 6 to the machine 1 and using it, a positional relationship suitable for use is secured between the earpiece and the microphone, and the user can use it without feeling uncomfortable.

In the present embodiment, the cordless handset 1 and the microphone adapter 6 are connected by inserting the lower portion of the cordless handset 1 into the concave portion 7 of the microphone adapter 6, but the above-mentioned coupling is limited to the above means. Instead, the engaging concave portion may be provided on one side and the engaging claw may be provided on the other side so as to engage with each other for connection.

[0016]

[Effect of the device]

 As described above, according to the present invention, when portability is important for the cordless telephone handset, the user can use the cordless handset alone, and when portability is not so important. , By using a microphone adapter connected to the cordless handset, the earpiece and the microphone are located at a distance suitable for a call, so that the user can talk without feeling discomfort.

When the microphone adapter is connected to the cordless handset, the microphone built in the cordless handset is disconnected from the transmission circuit, so that ambient sounds other than the user's voice are picked up from the microphone. It can be lost.

[Brief description of drawings]

FIG. 1 is an external view of a microphone adapter device and a cordless handset of the present invention.

FIG. 2 is an explanatory diagram of an internal circuit of the microphone adapter device of the present invention.

[Explanation of symbols]

 1 cordless handset 2 key input part 3 earpiece 4,9 microphone 5,8 connection terminal 6 microphone adapter 7 recess

Claims (2)

[Scope of utility model registration request] 1. A cordless handset having a microphone and an earpiece, a microphone adapter detachably attachable to the cordless handset, and another microphone built-in, and a microphone having a built-in microphone adapter when the cordless handset and the microphone adapter are connected. And a connecting means for electrically connecting the above to the transmitter circuit of the cordless handset. 2. The microphone adapter device for a cordless telephone cordless handset according to claim 1, wherein when the cordless handset and the microphone adapter are connected, the microphone built in the cordless handset is disconnected from the transmission circuit.