JP2536208B2 - Telephone - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a telephone set, and more particularly to a telephone set that does not have a sounding body dedicated to a ring tone and that sends a ring tone from a receiver used for a call. .

[Prior Art] A conventional telephone has, for example, a speaker as a sounding body for transmitting a ringing tone when an incoming call arrives, and amplifies the incoming signal with a power amplifier or the like to produce a loud sound.

[Problems to be Solved by the Invention] In this conventional method, a sounding body dedicated to the ring tone is required, and since the sounding body is large, there is a problem that the telephone becomes large in size by the sounding body. .

Also, if the receiver used for a call sends a ring tone, a sudden loud sound will be heard when the user puts the receiver on his / her ear, which may impair the hearing of the user. There is a risk of causing it.

[Means for Solving the Problems] The present invention has been made in view of the above problems, and it is possible to reduce the size of a telephone by omitting a speaker and to receive an incoming call without impairing the hearing of the user. For the purpose of notifying the user, in order to achieve this purpose, a ringing tone volume control means for controlling the volume of the ringing tone is provided, and the ringing tone volume gradually increasing by the ringing tone volume control means is transmitted from the receiver used for the call. Has been done.

Further, the incoming call volume control means is preferably constituted by a resistance circuit for switching and controlling the resistance value.

More preferably, a resistor circuit is configured by a resistor and a switch that shunts the resistor connected in series, and the resistance value is controlled to be switched by controlling ON / OFF of the switch of the resistor circuit.

[Operation] In the telephone having the above-mentioned configuration, the telephone can be downsized by omitting the speaker, and the ringing tone volume control means controls the gradually increasing ringing tone, and the ringing tone is sent from the receiver used for the call. By doing so, it is possible to notify the incoming call without impairing the hearing of the user.

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

FIG. 1 is a block diagram showing an embodiment of a telephone according to the present invention. The circuit shown in FIG. 1 is housed in the telephone 61 shown in FIG.

In FIG. 1, the connection terminal 10 is connected to a telephone line. When there is a call, an incoming signal is applied to the connection terminal 10 via the telephone line and supplied to the dial sending circuit 1 and the incoming detection circuit 31 of the incoming circuit 3. Call detection circuit 31
Detects that there is a ringing from the voltage and frequency of the incoming call signal and informs the incoming call tone control circuit 32, and also supplies the incoming call signal to the incoming call tone amplifying circuit 33.

At this time, the incoming call signal is supplied to the incoming call amplifying circuit 33 via the resistors 41 to 44 connected in series. Resistance 41 ~
The resistors 44 are shunted by the volume changeover switch 51 to the volume changeover switch 54, respectively.
The volume changeover switch 54 is on / off controlled by the ringtone control circuit 32. Therefore, when the volume changeover switch 51 to the volume changeover switch 54 are ON / OFF controlled by the ring tone control circuit 32, the total resistance value of the resistors 41 to 44 changes.

When the incoming call detection circuit 31 detects that there is a call and notifies the incoming call tone control circuit 32, the incoming call tone control circuit 32 controls the volume changeover switch 51 to the volume changeover switch 54 to be sequentially turned on to detect the incoming call. The ring tone supplied from the circuit 31 to the ring tone amplifying circuit 33 is sequentially increased. Ring tone amplification circuit 33
Amplifies the ringing tone and supplies it to the receiver 22, and the hybrid circuit 2 outputs the ringing tone from the receiver 22 as an audible tone.

As a result, a ringing tone that gradually increases when receiving a call is obtained from the receiver 22. Since the user notices before the ring tone becomes louder, the user can be notified of the incoming call without impairing the hearing of the user.

[Effects of the Invention] As described above, according to the present invention, the ring tone volume control means for controlling the volume of the ring tone is provided, and the ring tone volume gradually increased by the ring tone volume control means is transmitted from the receiver used for the call. With this configuration, the speaker can be omitted, the telephone can be downsized, and the incoming call can be notified without disturbing the hearing of the user.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone according to the present invention, FIG. 2 (a) is a front view showing an embodiment of a telephone according to the present invention, and FIG. 2 (b) is a book. It is a side view which shows one Example of the telephone device by invention. 1 …… Dial sending circuit 2 …… Hybrid circuit 3 …… Incoming circuit 10 …… Connection terminal 21 …… Microphone 22 …… Receiver 31 …… Incoming call detection circuit 32 …… Ring tone control circuit 33 …… Ring tone amplification circuit 41 ~ 44 ...... Resistance 51 ~ 54 ...... Volume select switch 61 ...... Telephone

Claims (3)

(57) [Claims] 1. A telephone having a ringing tone volume control means for controlling the volume of a ringing tone, wherein the ringing tone volume control means sends out the gradually increasing ringing tone from a receiver used for a call. 2. The telephone set according to claim 1, wherein said ringing tone volume control means is a resistance circuit for switching and controlling a resistance value. 3. The resistance circuit is composed of a resistor connected in series and a switch for shunting the resistance, and the resistance value is switched by controlling the switch of the resistance circuit on / off. Telephone described in 2.