JPH0446454A - Portable telephon device used also for stereo - Google Patents

Abstract

PURPOSE:To make a call by the same headphone when listening to a sound from an audio equipment by providing a switching device which switches a sound signal from the audio equipment into the sound signal of a telephone line. CONSTITUTION:A switching device 6 selects a sound signal A of a telephone and a sound signal B of a receiver, as an input signal of a headphone 4. At the usual time when the telephone is not used, the switching device 6 selects the sound signal B from a receiver 2 so that the sound signal of the receiver 2 can be heard from the headphone 4. Then, a detector 5 detects either the pulse of the telephone line at the time of getting a telephone call, or a signal generated when the on-hook switch of a portable telephone set is pressed at the time of telephoning. At that time, the switching device 6 selects the sound signal A of the telephone so that the sound signal of the telephone can be heard from the headphone 4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has a headphone-type handset that allows audio signals to be listened to as a headphone stereo [Prior Art and its Problems] In recent years, there have been many cordless telephones. There are also some that have a headphone-type receiver and transmitter. However, until now, if you received a call while listening to a portable stereo with headphones, you had to replace the headphones and answer the call, even though both the stereo and the phone were similar headphones. .

Traditionally, there have been phone parts equipped with mixing devices that allow you to listen to music while talking on the phone, but it is not possible to listen to music when the phone is not in use and mute the music when the phone is in use. There wasn't.

The present invention solves these problems and makes it possible to make a call using the headphones, if you receive a call or want to make a call while listening to audio from an audio device. purpose.

c. Means for Solving Problems] In order to solve the above problems and achieve the object of the present invention, a mobile phone has a device for switching between an audio signal from a telephone line and an audio signal from an audio device, When the phone is not in use, listen to the audio signal from the audio device through the headphones, and when a call arrives or when you go on-hook to make a call, the switching device listens to the audio signal from the phone through the headphones. That is.

Embodiment] The present invention will be explained in detail below by way of an embodiment shown in the drawings.

The stereo dual-purpose mobile phone device according to the present embodiment is a mobile phone that has a device for switching between an audio signal from a telephone line and an audio signal from an audio device, and includes a mobile phone 1 as a main body, a receiver 2, headphones 4, and a detector. 5. It is composed of a switching device 6 and a receiver power switch 7.

The receiver 2 is a VHF band FM signal receiver, and may be a normal FM radio, or may be one that can receive only the transmission frequency of the transmitter 3.

A transmitter 3 transmits music or the like that one wants to listen to as an FM signal in the VHF band from a device such as a stereo, and the reception frequency of the receiver 2 is adjusted to the transmission frequency.

The transmitter 3 is a device that transmits stereo audio input from FM radio, AM radio CD8, cassette, etc. as an FM signal in the VHF band.

The headphones 4 are for a person to listen to the audio signal A from the telephone and the audio signal B from the receiver, and allow the user to listen to stereo audio while keeping both hands free. It should also come with a microphone for phone conversations.

The detector 5 detects the pulse of the telephone line when a call is received and the signal when the on-hook switch of the mobile phone is pressed when making a call.

The switching device 6 selects the telephone audio signal A and the receiver audio signal B as input signals to the headphones 4.

During normal times when the telephone is not in use, the switching device 6 selects the audio signal B from the receiver 2, and the audio signal from the receiver 2 is heard through the headphones 4.

Detector 5 detects the pulse of the telephone line when a call is received and 1! When detecting any of the signals of pressing the on-hook switch of the mobile phone when making a conversation, the switching device 6 selects the telephone audio signal A, and the telephone audio signal is heard through the headphones 4.

The switching method is to detect the pulse of the telephone line when a call is received via a capacitor, rectify it, amplify it, and activate the relay. The signal from pressing the on-footer switch of a mobile phone when making a call is detected by measuring the potential difference in the telephone line. Even when the telephone conversation ends, the potential difference in the telephone line returns to the original state, so it is detected by measuring the potential difference in the telephone line, and the signal is switched to the audio signal B of the receiver 2 again.

The 1i source switch 7 of the receiver is a power switch of the receiver 2, and is a switch that is turned on when it is desired to listen to audio from an audio device through the headphones 4.

Next, how to use it will be explained. The FM radio I want to listen to first, A
A transmitter 3 transmits stereo audio from M radio CDs, cassettes, etc. Then, the user puts the headphones 4 to his ears and turns on the power switch 7 of the receiver. Then, a loud stereo sound comes from headphones 4.

When a call comes in, the detector 5 detects this and the switching device switches to the phone, allowing the user to continue talking on the phone. Also, if you would like to make a call from here,
By turning on the phone's on-hook switch, the stereo audio changes to telephone audio, allowing you to have a telephone conversation. When the telephone conversation ends, the telephone audio switches back to stereo audio.

In the first embodiment, the audio signal to be listened to when there is no incoming call is transmitted from an audio device such as a stereo to an FM in the VHF band.
The signal is sent by the transmitter and received by the receiver, but the audio signal from the audio device is sent to the base unit of the mobile phone, and inside the base unit, when the phone is not in use,
The switching device selects the audio signal from the audio device, and the headphones of the handset that receive the signal from the base device will hear the audio signal from the audio device, and the pulse and pulse of the telephone line when a call is received. When making a call, when any of the signals detected by pressing the on-footer switch of the mobile phone, the switching device selects the telephone audio signal, and the telephone audio signal may be heard through the handset's headphones. .

In this way, selecting the telephone audio signal and the audio signal from the audio device can be done by switching the audio signal within the mobile phone, or in the case of a parent-child phone, the selection can be made by switching the audio signal from the base unit. This can be done by switching between receiving a radio wave signal carrying a signal and a radio wave signal carrying an audio signal from an audio device, or it can be done by switching inside the base unit and receiving the resulting signal on the slave unit. It may also be in the form of

In addition, as a method for switching audio signals, the pulses of the telephone line are detected via a capacitor when a call is received, when a call is made, and when a telephone conversation ends, and the pulses are rectified and amplified. It is also possible to use a method of activating a relay, a method of detecting by measuring a potential difference in a telephone line, or other methods.

[Effects of the Invention] The present invention is configured and usable as described above, so when you receive a call while listening to stereo sound or want to make a call, you can use the headphones as they are without changing them. This has the effect of making it easier to make calls using headphones.

[Brief explanation of the drawing]

The drawings relate to one embodiment of the present invention, and FIG. 1 shows that during normal times when the telephone is not in use, the switching device 6 selects the audio signal B from the receiver 2, and the headphones 4 select the audio signal B from the receiver 2. The signal is too loud, but when the detector 5 detects either the pulse of the telephone line when a call is received or the signal from pressing the on-hook switch of the mobile phone when making a call, the switching device 6 switches the phone FIG. 2 is an explanatory diagram showing how to select an audio signal A. The receiver power switch 7 is a power switch for the receiver 2 . FIG. 2 is a perspective view showing the state of use of this embodiment. District Attorney/Patent Attorney 1) Seishi Naka; Engraving of power switch diagram for receiver (no changes to the content). Drawing dated August 31, 1990.

Claims (1)

[Claims] (1) When a mobile phone has a device for switching between the audio signal from the telephone line and the audio signal from the audio device, and when the phone is not in use, the audio signal from the audio device is listened to through headphones and a call is received. and a stereo dual-purpose mobile phone device, characterized in that when on-hook to make a call, the switching device allows the user to listen to the audio signal of the phone through headphones.