JPH0396151A - Telephone set - Google Patents

Abstract

PURPOSE:To prevent overhearing of a ring tone when a surrounding noise level is high or production of undesired large ring tone volume at still surrounding by varying an incoming ring tone volume automatically in response to the quantity of the surrounding noise level. CONSTITUTION:A surrounding noise detection section 105 is provided with a sound collection microphone, an amplifier circuit and a level discrimination circuit and outputs a signal corresponding to the level of surrounding noise. Then an output signal set by the surrounding noise detection section 105 is inputted to a control section 104, which inputs a control signal corresponding to the quantity of the surrounding noise level to an amplifier circuit 102 to change its amplification factor thereby varying a ring tone volume. Thus, overhearing of ring tone when a surrounding noise level is high or production of undesired large ring tone volume at still surrounding is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone set capable of changing the ringing volume.

[Conventional technology]

As shown in FIG. 2, in the conventional telephone incoming ringer, an oscillation circuit section 101 generates a ringing signal in response to a ringing signal from an exchange, and the ringing signal is transmitted through an amplifier circuit 102 to a sounding body 103. The amplifier circuit 1
02's amplification degree adjustment, so-called volume adjustment, was configured such that a mechanical switch 106 was used to set the appropriate volume and fix it artificially. [Problems to be Solved by the Invention] In the above-mentioned conventional telephone, as shown in FIG.
6 to set the appropriate volume and artificially fix it, so in order to change the sound volume once set, various switches must be operated artificially, and ambient noise The drawback is that it is often very inconvenient in environments where elevation changes frequently.

[Means to solve the problem]

The telephone according to the present invention is a telephone having an incoming call ringing unit that rings in response to a ringing signal from an exchange, wherein the incoming ringing unit includes an oscillation circuit unit that generates a ringing signal in response to a calling number from the exchange; an amplifier circuit section that amplifies the ringing signal; an ambient noise detection section that is connected to the ambient noise detection section and detects the amplification degree of the amplifier circuit section based on the level of the surrounding noise; It has an amplifier circuit section. [Example] Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, the incoming call ringer lO of the telephone of this embodiment includes an originating circuit section 101, an amplifier circuit section 102, and so on. Sounding body 103,
It has an elliptical shape and includes a control section 104 and an ambient noise detection section 105. Next, the operation of this embodiment will be explained. A call signal from the central office line is sent to the oscillation circuit section 10 through the hook switch 13.
1, the oscillation circuit section 101 detects the calling signal, generates a ringing signal, and inputs its output to the amplifier circuit section 102. The amplifier circuit section 102 amplifies the sound signal and drives the sounding body 103.

The ambient noise detection section 105 includes a sound collection microphone, an amplifier circuit, a level determination circuit, etc., and outputs a signal corresponding to the magnitude of ambient noise. The output signal set by the ambient noise detection section 105 is input to the control section 104, and the control section 104 inputs a control signal corresponding to the magnitude of the ambient noise level to the amplifier circuit 102, and changes the degree of amplification to generate a sound. Change the volume.

〔Effect of the invention〕

As explained above, the present invention automatically changes the ringtone volume depending on the level of ambient noise, thereby preventing missed calls when there is a lot of ambient noise and unnecessary calls when it is quiet. This has the effect of preventing loud noises.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of an incoming call ringing section of a conventional telephone. 10.10a... Incoming ringing section, 13... Hook switch, 101... Oscillation circuit section, 102... Amplification circuit section, 103... Sound generating body, 104... Control section, 105
...Ambient noise detection unit, 106...Mechanical switch.

Claims (1)

[Claims] In a telephone having an incoming call ringer that operates to ring in response to a ringing signal from an exchange, the incoming ringer includes an oscillation circuit unit that generates a ringing signal in response to a ringing signal from the exchange;
an amplifier circuit section that amplifies the ringing signal, a sounding body connected to an output terminal of the amplifier circuit section, an ambient noise detection section that detects surrounding noise, and the amplifier circuit section and the ambient noise detection section. A telephone set, comprising: a control section connected to the control section for changing the amplification degree of the amplification circuit section according to the level of the surrounding noise.