JP2528757B2 - Mobile phone - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone.

[0002]

2. Description of the Related Art Although mobile phones have been rapidly becoming popular recently, since a microphone for inputting voice is built into the main body, it is necessary to support the main body of the mobile phone with one hand when using it. Not only is tired when talking over time, but when used while driving a car, one-handed driving is dangerous. Also, when used in a noisy street or at a construction site, external noise may enter the microphone along with the voice and may not be heard by the other party.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a voice generated by a human not only vibrates the eardrum of the person as external air vibration, but also vibrates the skull of the person and vibrates the eardrum from the inside of the body. That is, for example, based on the physiological observation that you can hear your own voice even if you block your ears so that external noise cannot be heard, conventional mobile phones
It is an object of the present invention to solve the above-mentioned drawbacks.

[0004]

[Means for Solving the Problems]

The portable telephone according to the present invention is a specific frequency
A unit that captures radio waves in synchronization with several radio waves
A unit that amplifies high frequency radio waves
A unit that converts radio waves into low-frequency electrical signals, low-frequency
A unit for amplifying a number of electrical signals and a low frequency electrical signal
A receiving circuit consisting of a unit that outputs the
And a unit that converts the input voice into a low-frequency electrical signal.
Unit, which amplifies low frequency electrical signals, is amplified
Unit that converts low frequency electrical signals to high frequency electrical signals.
And a unit that amplifies high-frequency electrical signals and on-air
Calling with a mobile phone that has a transmission circuit consisting of
A unit that converts the sound in the circuit into a low-frequency electrical signal.
The earphones that insert the headset into the ear canal
Pneumatic connection with a cycle of 20 KHz (kilohertz) or more
Configuration to switch to output section of receiving circuit and input section of transmitting circuit
It is characterized by being.

The earphone to be inserted into the ear canal is a unit that originally outputs a low-frequency electric signal as sound.
It is essentially the same as a microphone in that it is composed of a moving coil and a vibrating membrane. When voice is input, a low-frequency electric signal corresponding to the voice is generated in the moving coil. The present invention utilizes the low-frequency electrical signal thus generated.

As the earphone, a commercially available off-the-shelf product may be used, or the earphone may be designed so as to improve the conversion efficiency from voice to electric signal.

[0008] mobile phone having both of the receiving circuit and the transmitting circuit, you to configure switching the electrical connection of the earphone to the input of the output section and the oscillation circuit of the receiver circuit 20 KHz (kilohertz) or more cycles. In this case, one earphone alternately operates as a unit that outputs a low-frequency electric signal as a voice or a unit that converts an input voice into a low-frequency electric signal, but the switching is performed at a cycle of 20 KHz or more. If it is done, the fact that it is switched is not perceived by the human ear, which is similar to a normal call. If such a system is adopted, only one earphone is required, but two earphones can be used freely.

The present invention does not deny the existence of a speaker built in the main body of the telephone, but makes both an earphone and a built-in speaker, which operate as a unit for converting a voice into a low frequency electric signal, coexist as necessary. You can use them properly.

According to the present invention, the vibration of the eardrum is transmitted to the vibrating membrane of the earphone in the closed space between the earphone inserted in the ear canal and the eardrum, and the low-frequency electric power is transferred to the moving coil fixed to the vibrating membrane. Since a signal is generated, even if there is a large amount of external noise, it hardly penetrates into the closed space, and the vibration of the eardrum caused by the voice of the user is converted into a low-frequency electric signal without noise.

One of the two attached earphones of a commercially available mobile phone (manufactured by Matsushita Communication Industrial Co., Ltd .: model number AS7011) is connected in parallel with the built-in microphone of the phone, and both earphones are inserted into the ears to make the mobile phone. Tried to make a call far away from his mouth, and there was no problem with the call, and no noise was mixed in when making a call in a place with a lot of outside noise, and a normal call was made.

[0012]

Since the voice is converted into a low frequency electric signal without using an externally located microphone, it is not disturbed by ambient noise. In addition, since you can use your mobile phone with both hands free, you can talk safely while driving a car.

Claims (1)

(57) [Claims] 1. A radio wave of a specific frequency is tuned to
A unit to capture, amplifies the captured high frequency radio waves
Unit converts high frequency radio waves into low frequency electrical signals.
Unit for converting, unit for amplifying low-frequency electrical signals
Unit and a low-frequency electrical signal output as audio.
Receiver circuit and input audio at low frequency
A unit that converts electrical signals, amplifies low-frequency electrical signals
Unit, high frequency amplified low frequency electrical signal
Unit to convert to electrical signal and increase high frequency electrical signal
A mobile phone with a transmitter circuit consisting of a unit that is wide and on air.
In a mobile phone, the voice in the transmission circuit is transmitted at low frequency.
An earphone that inserts a unit that converts air signals into the ear canal
The electrical connection of the earphone is 20 KHz (kilohe
Ruth) With the above cycle, the output part of the receiving circuit and the transmitting circuit
A mobile phone characterized by being configured to switch to the input section
Mobile phone.