JPH04100400A - Sending system for sound emitted from speaker - Google Patents

Abstract

PURPOSE:To make control lines unnecessary, and to simplify a system constitution by switching an extension telephone set into a speaker receiving state from the side of a telephone system main body, and sending the sounds emitted from a speaker such as alarm sounds through communicating lines at an extension side. CONSTITUTION:When a controlling part 102 of a main body 1 detects an alarm state, the control part 102 switches the contacts 106 and 107 of a communicating path switching relay into the extension side by controlling a relay control circuit 103, and transmits control data to turn an extension telephone set 2 into the speaker receiving state through a data transmitting and receiving circuit 101 to each extension telephone set 2. The control part 102 activates a signal source 105 in order to generate alarm signals, and the alarm signals are transmitted through an extension current supplying circuit 104 to a communicating line l1 at the extension side. When each extension telephone set 2 reads in the control data, a controlling part 204 activates a speaker reception amplifier 202, and the alarm signals transmitted through a communicating line l2 are emitted from a speaker 206 as the alarm sounds. Thus, the alarm signal sounds or the like from the speaker can be transmitted even by a general two-wire telephone set.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for transmitting a signal sound to be emitted from a speaker of an extension telephone, such as an extension ringing signal or an alarm sound, of a telephone device.

[Prior Art] The conventional structure of a telephone device such as a button telephone device is composed of a main body of the telephone device and an extension telephone connected to the main body by a cable of four or more wires including a speech line and a control line. The calling signal of the extension telephone or the alarm sound of the telephone device having a security function is normally sent to the extension telephone via a control line.

[Problems to be Solved by the Invention] According to the above-mentioned conventional technology, a complicated circuit configuration is required to control the transmission of various signal tones, resulting in an expensive system. It required a special telephone that was designed to be optimal, and had the disadvantage of lacking in versatility.

The present invention is proposed to solve this problem.
The object of the present invention is to obtain a system for transmitting sound emitted from a speaker in order to provide a telephone system that is versatile and inexpensive.

[Means for solving problem n] As a general-purpose two-wire telephone that is directly connected to a telephone line,
In recent years, telephones that are capable of transmitting and receiving simple control data between telephones via telephone lines have been put into practical use with the assumption that they will be connected to a branch.These types of telephones usually emit various signal tones. It is equipped with a speaker, and also has a speaker receiving function (a function of amplifying the received voice and emitting it from the speaker).

In order to solve the above problems, the present invention uses a general-purpose telephone configured as described above as an extension telephone, sends control data from the telephone device main body to the extension telephone via a telephone line, and transmits control data to the extension telephone. By setting each extension telephone to the speaker listening state, the ring tone or alarm sound, etc., is then transmitted from the telephone device itself via the extension line.
A temporary signal tone to be emitted from the speaker is emitted from the speaker of the extension telephone.

[Function] In the present invention, it is possible to make an extension call, send out an alarm sound, etc. by utilizing the speaker reception function as a function of a telephone that is used for communication purposes.

Furthermore, since the above-mentioned telephony telephone can be used as an extension telephone, there is no need for a telephone specially designed for the telephone device.

[Embodiment] Both FIG. 1 and FIG. 2 are block diagrams explaining the present invention in detail, and FIG. FIG. 2 shows an example of a system in which a telephone device main body has a telephone function section, and the main body serves as one extension telephone.

Reference numeral 1 denotes a main body of the telephone device (hereinafter referred to as the main body), which includes a data transmission/reception circuit 101 for transmitting and receiving control data, a control section 102 mainly composed of a microcomputer, and a relay control circuit 103 for controlling a switching relay between an outside line and an extension line. , an extension current supply circuit 104 composed of a DC current source, a signal source 105 for internal call signals, alarm signals, etc., and contact 1 of the switching relay.
In the embodiment shown in FIG. 2, in addition to the above, the main body 1 itself has a telephone call function section 108 for functioning as an extension telephone. 2 indicates an extension telephone;
A telephone call circuit 201, a speaker receiving amplifier 202, a data transmitting/receiving circuit 203 for exchanging control data, a control unit 204 for collectively controlling the inside of the telephone, a key 205 for calling the other party's telephone during an extension call (usually a dial button) ), a speaker 206 that emits various signal tones, and the like.

Furthermore, the telephone call function section 108 shown in FIG. 2 includes all the components of the extension telephone 2 except for the data transmitting/receiving circuit 203 and the control section 204.

The extension telephone 2 is a two-wire general-purpose telephone having the functions described above, and does not need to be specially designed for the system according to the embodiment.

In the embodiment shown in FIG. 1, the operation when, for example, an alarm sound is sent from the extension telephone 2 will be described below.

When an alarm state is detected by various alarm sensors (not shown), the control unit 102 detects the alarm state from the alarm sensor, and thereby controls the relay control circuit 103 to set the contacts 106, 107 of the call path switching relay to the extension side (not shown). (opposite side)
At the same time, control data is transmitted to each extension telephone 2 through the data transmission/reception circuit 101 to put the extension telephone 2 into a speaker listening state.

Thereafter, the control unit 102 activates the signal source 105 to generate an alarm signal, and sends the alarm signal to the extension side communication line through the extension current supply circuit 104.

When each extension telephone 2 receives control data for switching to the speaker listening state, the data transmitting/receiving circuit 203 receives this control data, and when the control unit 204 reads this, the control unit 204 sets the speaker listening state to the speaker listening state. Amplifier 202
This completes the speaker listening path. Thereafter, an alarm signal sent from the main body 1 via the extension side communication line 11 and the communication line IL2 to each extension telephone 2 is inputted to the speaker receiving amplifier 202 via the communication circuit 201, and an alarm sound is emitted from the speaker 206. It will be released.

Further, in the embodiment shown in FIG. 2, the telephone function section 1 of the main body 1
An alarm sound is also emitted from 08. The alarm sound emission control in the main body 1 is controlled by the control unit 102 and the call function unit 108.
Since the control data can be directly switched to the speaker listening state, the control data is not exchanged with the extension telephone 2 between the control section 102 and the call function section 108 inside the main body 1.

Next, the operation of extension voice calling will be explained using the embodiment shown in FIG.

When the #1 extension telephone (this is referred to as 21) calls the #2 extension telephone (this is designated as 22), when the handset of the #1 extension telephone 21 is raised and the key 205 is pressed, the control unit 204 , the internal call data is sent to the data transmitting/receiving circuit 203, and the data transmitting/receiving circuit 203 sends the internal call data to the communication line 2. In the main body 1, when the data transmission/reception circuit 101 receives the internal call data and the control unit 102 reads it, the control unit 102 controls the relay control circuit 103 to connect the relay contacts 106 and 107 to the extension current supply circuit 104 side. The #1 extension telephone 2I and the #2 extension telephone 22 are connected to each other via the extension side communication line L1. The internal call data is sent out repeatedly a certain number of times, and by the connection between the extension telephones 21 and 22 by the extension side communication line 11,
The above internal call data is transmitted to the #2 extension telephone 22 and read by the control unit 204 via the data transmission/reception circuit 203, so that the control unit 204
2 to the speaker listening state.

Here, if you say the name of the other party into the transmitter of the #1 telephone 21, the voice will be sent to the telephone line 12 via the telephone communication circuit 201, and will be sent to the telephone number 2 via the extension telephone line 11 of the main body 1. Reach 22. In the #2 extension telephone 22, the speaker 2
Voice is emitted from 06, allowing voice calls.

Further, at this time, if a signal tone is sent from the signal source 105 of the main body 1 and the signal tone is controlled to be sent to the extension side communication line A, calling by the signal tone is also possible.

The extension calling operation in the embodiment shown in FIG. 2 can be easily understood from the above explanation, and therefore will not be explained again.

In the above embodiments, the alarm sound and extension ringing sound in the security function were exemplified as the sound emitted from the speaker, but the present invention can be implemented with respect to all types of sounds or signal sounds emitted from the speaker of the telephone.

[Effects of the Invention] As explained above, the present invention enables the telephone device main body to switch the extension telephone to the speaker listening state, and to emit rice from the speaker via the extension telephone line, such as an alarm sound and an extension call. According to the present invention, the device configuration is not only simplified since no control line is required, but also a two-wire general-purpose telephone ( Since it is possible to make a voice call from a speaker and send out an alarm signal sound even from what is generally called a stand-alone telephone, the effect is that a general-purpose telephone can be used as an extension telephone for the system.

[Brief explanation of the drawing]

1 and 2 are block diagrams showing embodiments of the present invention. (Main symbols) 1...Telephone device body 2...Extension telephone 101.
203...Data transmitting/receiving circuit 102.204...Control unit 105...Signal source...Speaker receiver amplifier...Speaker and 4 others

Claims (1)

[Scope of Claims] 1. In a telephone device that operates on two wires and uses a telephone as an extension telephone that has a speaker receiving function and a control data transmission/reception function, when a signal tone is to be transmitted, the above-mentioned extension telephone At the same time, the telephone device switches the extension telephone to the speaker listening state by sending control data to change the extension telephone to the speaker listening state via the telephone line, and then the telephone device switches the extension telephone to the speaker listening state. A signal tone is transmitted from the extension telephone to the extension telephone via a communication line switched to the extension side, and the signal tone is emitted from the speaker of the extension telephone.