JPS63151143A - Telephone set - Google Patents

Abstract

PURPOSE:To surely sense an incoming call and to prevent it from becoming a noise source by gradually increasing the sound volume of the ringing tone according as the time elapses. CONSTITUTION:When the output OS of an inverter 6 becomes logical value '0', a switch circuit 8 validates the out put of a counter 5 and switches the switching contact in accordance with the output of the counter 6. When a first pulse is generated from a one shot circuit 4, the output of the counter 5 is counted up and a switch circuit 8 connects the contact to a resistance r1. As the result, a tone signal TN is inputted to a speaker 3 through the resistance r1 having a high attenuation factor, and the ringing tone is emitted with a small sound volume. When a second pulse is generated, the contact of the switch circuit 8 is connected to a resistance r2, and the ringing tone is emitted from the speaker 3 with a sound volume slightly larger than preceding that. The contact of the switch circuit 8 is successively switched to resistances r3 r7 in such a manner, and the sound volume of the ringing tone emitted from the speaker 3 is increased according as the time elapses.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a telephone set, and more particularly to an arrangement for generating ring tone light.

(Prior Art) Fig. 3 shows the configuration of a conventional ring tone generator in a general telephone set. ! The ringing signal (16H2) from the exchange that was sent to the tone ringer 2. It is converted into a ringing tone through the speaker 3. In this device, tone ringer 2
3 with different resistance values on the output line from to speaker 3
Two resistors R are provided, and these resistors R are connected by a manual switch S.
It is possible to switch using W. According to this configuration, the user can adjust the volume of the ring tone in three levels by appropriately switching the manual switch SW. In addition, as another example, there is a device in which the resistor 4 described above is replaced with a variable resistor, and in this device, the volume of the ring tone changes as a continuous volume change by the user adjusting the volume adjustment knob. It is made variable.

[Problem that the invention seeks to solve]

However, in these conventional telephones, once the volume of the ring tone is adjusted, the volume of the ring tone remains constant until the volume is adjusted again.

For this reason, if you set the volume low, you may not be able to hear it if you are far away from the phone, if you are hard of hearing, or in a noisy place, and if you set the volume high, it may be noisy depending on where the phone is installed. There are advantages and disadvantages.

(Means for Solving the Problems) Therefore, in the present invention, an attenuation means for attenuating the tone signal generated from the tone signal generation means at an attenuation rate that decreases over time is provided from the tone signal generation means to the speaker. Place it on the output line.

[Function] When the attenuation means detects an incoming call, it operates to change the attenuation rate of the attenuation means from a large value to a small value over time. As a result, the tone signal generated from the tone signal generating means is first subjected to attenuation processing with a large attenuation rate before being input to the speaker, and thereafter, as time passes, attenuation processing with a smaller attenuation rate is applied and input to the speaker sequentially. The volume of the ringtone gradually increases over time.

〔Example〕

FIG. 1 shows an embodiment of the present invention, in which 1 is a bridge circuit that rectifies a calling signal (16Hz>) from an exchange, 2 is a tone ringer that converts the calling signal into a tone signal TN of about 1000H2, and 3 is a tone ringer that converts the calling signal into a tone signal TN of about 1000H2. 4 is a one-shot circuit that shapes the waveform of the tone signal TN; 5 is a 3-bit count circuit that counts the output pulse O8 of the one-shot circuit 4; 6 is an inverter; and 7 is a resistance value "~r (r >r>...>C7) connected in parallel, 8 is connected to the output TN of the tone ringer by the output C1゜C2, C3 of the counter circuit 5.
This is a switch circuit that changes the connection mode with ~r7.

In this configuration, the counter 5 is reset, for example, each time the telephone handset (not shown) is raised, that is, each time the hook switch is closed, and the 3-bit counter 5 resets the number from "0" to r7J (8 Suppose we want to count and output decimal). The switch circuit 8 uses the output O8 of the one-shot circuit via the inverter 6 as an enable signal, and the output of the counter 5 selects the cutoff resistor r1 of rIJ. ”, resistor r2...C7 is selected. Furthermore, the resistance values of the resistor 7 decrease in the order of r1→7, and these resistances r
1 to r7 attenuate the amplitude of the tone signal TN input from the tone ringer 2.

Hereinafter, the specific operation of the above configuration will be explained according to the time chart of FIG. 2.

Upon receipt of the call, a calling signal from the exchange is input to the bridge circuit 1. The bridge circuit 1 rectifies this calling signal and inputs it to the tone ringer 2. The tone ringer 2 converts the input signal into a tone signal TN (second
(see figure (a)). In this case, the tone signal TN indicates one call as three consecutive pulses so that one call produces three consecutive tones (for example, lururu). This tone signal TN is applied to the contact on the input side of the switch circuit 8, and is also input to the one-shot circuit 4, where waveform shaping is performed to produce a signal O8 as shown in FIG. 2(b).
is converted to

In the initial state of the counter 5, its outputs C1 to C3 are rOJ
(octal), one-shot circuit 4 to 1
Each time a pulse is input, the outputs C1 to C3 are increased by rlJ.
(See Figure 2 (1, (d), (e)).

The switch circuit 8 outputs the output O8 of the inverter 8 (see Fig. 2).
f)) becomes the logical value ``0'', the counter 5
The output of the counter 5 is made valid, and the switching contact is switched according to the output of the counter 5. First, when the first pulse is generated from the one-shot circuit 5, the output of the counter 5 is counted up from "0" to "1", thereby causing the switch circuit 8 to connect its contact to the resistor r1. As a result, the tone signal TN is transmitted to the speaker 3 via the resistor r1 with a large attenuation rate.
is entered, and a low volume ring tone is generated (second
(See figure (Q)). When the second pulse is generated from the one-shot circuit 6, the output of the counter 5 becomes "2",
The contact of the switch circuit 8 is connected to the resistor r2, and as a result, the speaker 3 generates a ringing tone that is slightly louder than the previous volume (see FIG. 2(h)). Similarly, each time one pulse is generated from the one-shot circuit 5, the counter 5 is counted up to "7", and as a result, the switch circuit 7 is switched in the order of r3 → r7, and the call signal generated from the speaker 3 is The volume of the sound increases with time (see Figure 2 (i)).

In addition, in this configuration, the output of the counter 5 is not reset until the handset is lifted.
After the contacts of the switch circuit 8 are switched to the resistor r7, the switch circuit 8 will hold its contacts to the resistor r7 until the handset is lifted, and during this period the loud ringing tone will continue to ring. .

In this way, in this embodiment, there are 7 (1!) resistances r1 to r7.
When a call is received, the volume of the ringtone increases over time in seven levels.

In the above embodiment, the counter 5 performs the counting operation using the signal of the tone ringer 2 itself. It is also possible to generate a clock pulse and input this clock pulse to the counter 5.

In addition, the resistor 7, one-shot circuit 4, counter 5, etc. may be replaced with other circuits that achieve equivalent functions.

Furthermore, in the above embodiment, a plurality of attenuation means with different attenuation rates are provided to increase the volume of the ring tone in stages, but a variable resistor is also provided, and the resistance value of the variable resistor is adjusted over time when a call is received. The volume of the ringing tone may be increased continuously by changing it continuously as the time progresses.

(Effects of the Invention) As explained above, according to the present invention, the volume of the ringer gradually increases over time, so if the person is far from the telephone, if the person is hard of hearing, or if the person is in a noisy place. However, in addition to being able to reliably detect incoming calls,
When people are near the phone, they are no longer startled by the ringing sound.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a time chart showing an example of its specific operation, and FIG. 3 is a block diagram showing an example of the configuration of a conventional device. 1...Bridge circuit, 2...Tone ringer, 3...
・Speaker, 4...One-shot circuit, 5...Counter, 6...Inverter, 7...Resistor, 8...
switch circuit. Seisho Kaisetsu (b)・05o-``-11-F----Ding-1-(9)・
r1 output"]"1"l-11111111 Fig. 2

Claims (2)

[Claims] (1) In a telephone that generates a ringing tone by converting a ringing signal from an exchange into a tone signal by a tone signal generating means and outputting the tone signal through a speaker, the tone signal generating means is connected to a speaker. Attenuation means is provided on the output line and attenuates the tone signal output from the tone signal generation means at an attenuation rate that decreases over time, so that the volume of the ringing tone increases over time when an incoming call is received. A telephone characterized by: (2) The attenuating means includes a plurality of attenuators that attenuate the tone signal output from the tone signal generating means at different attenuation rates, and when a call is received, the attenuators are selected from the attenuators with the highest attenuation rate to the one with the highest attenuation rate. Claim No. 1 comprising a switching control means for sequentially switching to a small one as time passes.
) Telephones listed in section. (2) The switching control means includes a waveform shaping means for shaping the tone signal output from the tone signal generating means, a counter means for counting the output of the waveform shaping means, and a counter means for counting the output of the waveform shaping means, based on the count output of the counter means. The telephone according to claim 2, further comprising a switching circuit that switches between the plurality of attenuators.