JPH063952B2 - Telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a telephone that has a speaker receiving function and is switched from speaker reception to handset reception by off-hook operation of a receiver (handset).

(B) Conventional Technology Conventionally, many telephones having a speaker receiving function in which the other party's voice can be heard from the monitor speaker of the telephone have been realized. This speaker receiving function is often used for on-hook dialing for making a call operation while the handset is on-hook. The procedure of this on-hook dialing will be described below.

The caller first presses the speaker reception start button with the handset left on, that is, with the handset in the on-hook state.
Next, in this state, confirm that a dial tone is being output from the monitor speaker, and dial the telephone number of the other party. Then, a ringing tone is heard from the monitor speaker, and when the other party lifts the handset, the call becomes possible. Upon confirming that the other party has come out, the caller picks up the handset, that is, performs an off-hook operation, and the off-hook operation causes the telephone to switch from the speaker reception to the handset reception.

As described above, on-hook dialing switches the call from the speaker to the handset at the same time as the caller's off-hook operation. I can't hear.

As a method for preventing the interruption of the reception, for example, there is a "phone speaker reception control method for telephone" (Japanese Patent Laid-Open No. 61-284149). This is to switch from the speaker reception of the telephone to the handset reception not immediately after the off-hook operation but after a predetermined time has elapsed. According to this method, there is no interruption in reception when switching from speaker reception to handset reception, but the delay time setting at the time of switching is not appropriate. For example, if it is too long, the caller's response will be delayed.

(C) Problem to be Solved by the Invention After on-hook dialing, at the time of answering the other party, switching from speaker reception to handset reception is performed after off-hook operation.
It is difficult to set the delay time in the conventional method which is performed after a predetermined time has elapsed. That is, the time from the off-hook operation until the handset is brought to the ear varies depending on the individual and the situation at that time, and it is not possible to set an appropriate delay time for all of them.

(D) Means for Solving the Problem The telephone of the present invention detects the voice of the caller input to the handset and outputs the voice input detection signal after the off-hook operation of the handset when receiving the speaker. And a switching means for switching from speaker reception to handset reception according to the voice input detection signal.

(E) Operation According to the telephone of the present invention, the switching from the speaker reception after the on-hook dialing to the handset reception is performed when the caller off-hooks the handset and then inputs voice into the handset.

(F) Embodiment An embodiment of the telephone according to the present invention will be described below with reference to FIG.

When dialing on-hook, the caller actuates the speaker receiving switch (3) to close the loop open / close switch (1), and at the same time switches the selector switch (2) to the monitor speaker drive circuit (1).
Connect to (0) side (a). In this state, the dial tone from the line is reproduced from the monitor speaker (11). The caller confirms the dial tone and then dials the number of the other party (this functional block is not shown). If the called party is not busy, the ringing tone continues to be heard from the monitor speaker (11). When the called party answers, the called party's voice is heard through the monitor speaker (11) instead of the ringing tone.

When the caller off-hooks the handset (6) including the handset speaker (6a) and the handset microphone (6b), the hook switch A (12) and the hook switch B
(4) becomes conductive. Then RS flip-flop (8)
Shifts from the reset state until then to the state of waiting for input from the voice detection circuit (9). Caller is handset microphone
When voice input is performed from (6b), the voice input detection circuit (9) detects this voice signal and outputs the voice input detection signal to the RS flip-flop (8). This voice input detection signal causes the output of the RS flip-flop (8) to rise, and this is transmitted to the speaker reception switch (3), and the speaker reception switch (3) receiving this signal opens the loop open / close switch (1) and switches it. Switch (2) to handset drive circuit (5)
Switch to side (b).

By the above operation, the voice input from the microphone (6b) of the handset (6) is sent to the line (7) via the handset drive circuit (5). The audio signal from the line (7) is not reproduced from the speaker (11) but reproduced from the speaker (6a) of the handset (6).

(G) Effect of the Invention Since the telephone of the present invention switches from the speaker reception to the handset reception by the voice input of the calling party, the switching timing is too early and the voice when answering the called party is missed. It is possible to eliminate the inconvenience that it is too late for the caller to make a voice.

Also, the caller does not have to worry about the switching delay time,
It is possible to start a call independently, and it is expected that the usability will be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telephone according to the present invention. (1) ... loop open / close switch, (2) ... changeover switch,
(3)… Speaker receiving switch, (4)… Hook switch B,
(5)… Handset drive circuit, (6)… Handset, (6a)
… Handset speaker, (6b)… Handset microphone,
(7) ... Line, (8) ... RS flip-flop, (9) ... Voice input detection circuit, (10) ... Monitor speaker drive circuit, (11) ... Monitor speaker, (12) ... Hook switch A.

Claims (1)

[Claims] 1. A telephone having a speaker receiving function,
After the off-hook operation of the handset while listening to the speaker,
A voice input detection means for detecting a voice of a caller input to the handset and outputting a voice input detection signal; and a switching means for switching from speaker reception to handset reception by the voice input detection signal. Telephone to do.