JPH04368046A - Home pbx device - Google Patents

Abstract

PURPOSE:To identify clearly audibly an incoming ring tone from a tone ringer signal by outputting the specific incoming ring tone from a monitor camera unit at the arrival of an incoming call from an intercom slave set with a camera connecting to the home PBX device. CONSTITUTION:The home PBX device comprising the intercom slave set with a camera connecting to the home PBX main body, a monitor television unit 3 connecting to the slave set via an extension and a telephone set 4 and sending a signal modulated by a video image picked up by the intercom slave set with a camera to the extension together with a voice talking signal, is provided with a tone signal transmission means sending a tone signal not giving effect onto the voice frequency and the modulated video signal when a call signal from the intercom slave set is detected, and the monitor television unit 3 is provided with a tone signal detection circuit 26 detecting a tone signal, a ring tone generating circuit 30 started by a detection signal of the tone signal detection circuit 26 and generating a ring tone, and a speaker 32 built in the monitor television unit outputting the ring tone.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a home PBX device to which a door intercom unit with a camera, a monitor/TV unit, and a telephone are connected.・It is configured to emit a chime sound from the TV unit.

0002

[Prior Art] A conventional home PBX device has a home P.B.
Consists of a BX main unit, a door intercom unit with a camera connected to the PBX main unit, a monitor/TV unit connected via an extension line, multiple telephones, and other terminals, and is capable of making outside calls, internal calls, and door intercom calls. etc.

As shown in FIG. 3, a home PBX main body 1 used in a conventional home PBX device controls an incoming call detection circuit 5 connected to a central office line, a hold tone sending circuit 6, and the entire device. CPU 7, door phone power supply circuit with camera 8, door phone incoming call detection circuit 9, hybrid amplification circuit 10, high frequency signal amplification circuit 11, 16Hz transmission circuit 12, tone signal transmission circuit 13, analog
It includes a switch 14, a power supply/call detection circuit 15, a high frequency signal buffer circuit 16, a power supply circuit 17, and the like.

As shown in FIG. 4, the camera-equipped door intercom slave 2 includes a television camera 18 and a television camera 1.
a modulation circuit 19 that modulates and sends out the video signal from 8;
It is comprised of a speaker 20 for calls, a microphone 21 for calls, a hybrid circuit 22, a calling signal sending circuit 23, and the like.

As shown in FIG. 2, the monitor television unit 3A includes a high frequency demodulation circuit 24 connected to extensions 1 to 4 via a capacitor C1;
, a tone signal detection circuit 26 connected via a capacitor C2, a monitor power supply control circuit 27, and a power supply circuit 28.

Next, the operation of the television/door phone call function of the conventional home PBX device configured as described above will be explained.

[0007] A visitor uses a camera-equipped doorphone handset 2.
When the call button is pressed down, the call signal sending circuit 23
When a calling signal is sent out, the intercom incoming call detection circuit 9 of the home PBX main body 1 detects that there is a call, and the information is applied to the CPU 7.

[0008] Therefore, the CPU 7 has a 16Hz transmission circuit 1.
2 and the tone signal sending circuit 13, and the analog
Through the switch 14, a 16 Hz ringing signal is transmitted on each of extensions 1 to 4, and a single frequency signal that does not affect the frequency band of the audio frequency and modulated video signal for activating the monitor television unit 3A. Sends a tone signal. At the same time, the CPU 7 activates the intercom power supply circuit 8, starts supplying power to the camera-equipped intercom handset 2, and activates the television camera 18 and the modulation circuit 19.

[0009] Thereby, the camera-equipped door intercom handset 2 transmits a video modulation signal to the high frequency signal amplification circuit 11 of the home PBX main body 1. This video modulation signal is amplified and then passed through a high frequency signal buffer circuit 16 to each extension 1 to 1.
Sent on 4th.

Further, the telephone 4 receives a 16 Hz ringing signal through the inductance L1 of the monitor television unit 3A, and rings each ringer in synchronization with the interval at which the ringing signal is sent. This notifies you of an incoming doorbell call.

Furthermore, the tone signal detection circuit 26 of the monitor television unit 3A detects a single frequency signal sent from the home PBX main body 1, activates the monitor power supply control circuit 27, and activates the high frequency demodulation circuit. The video signal demodulated at step 24 is output to the CRT 25 for display.

One of the plurality of telephones connected to the terminal
When the machine answers the incoming call, the home PBX main unit 1
The power supply/call detection circuit 15 detects this and inputs a signal to the CPU 7 indicating that one of the terminals has responded.

[0013] With this input, the CPU 7
The switch 14 is controlled to link the call path of the door intercom slave unit 2 with the camera and the responding extension, and the call is shifted to the door intercom call. At the same time, the high frequency signal amplification circuit 11 and the high frequency signal buffer circuit 16 continue to send out video signals to the extension communication path until the intercom call ends.

[0014] As described above, even if a home PBX device is equipped with a conventional TV/door phone calling function, the home PBX
A doorphone call can be made while checking the image of the visitor using a camera-equipped doorphone handset 2 connected to the main body 1, a telephone 4, and a monitor television unit 3A.

[0015]

[Problems to be Solved by the Invention] However, in such conventional home PBX devices, the output of the incoming call ringing sound of the camera-equipped door intercom handset 2 is transmitted by ringing the ringer of the telephone connected to the terminal. Because we are doing
Even if the ringer ringing interval is changed from the ringing interval of the incoming call to the central office line and sent from the home PBX, there is a problem in that it is difficult to distinguish whether the call is coming from an outside line or a doorbell handset.

[0016] The present invention was devised to solve these problems, and provides a television door phone that can output a unique incoming ringing sound without having to ring the telephone when an incoming call is received. This realizes a home PBX device having a telephone call function.

[0017]

[Means for solving the problem] A home PBX main body,
This PBX consists of a door intercom unit with a camera connected to it, a monitor/TV unit and a telephone connected via an extension line, and a signal modulated by the image taken by the intercom unit with a camera is used for voice calls. In a home PBX device that sends a signal to an extension along with a signal, when a calling signal from a camera-equipped door intercom handset is detected, a tone signal that does not affect the audio frequency or modulated video signal is sent to the home PBX body. The monitor television unit is provided with a tone signal sending means, a tone signal detecting means for detecting a tone signal, a ringing sound generating means for generating a ringing sound when activated by the detection signal of the tone signal detecting means, and A speaker that outputs a ringing sound is provided.

Furthermore, the monitor television unit is provided with a timer circuit that is activated by the detection signal of the tone signal detection means and operates for a certain period of time, and means for causing the display means to output a video signal for a certain period of time by this timer circuit. .

[0019]

[Function] According to the home PBX device of the present invention, when a call is received from a camera-equipped door intercom slave unit, a unique incoming ringing sound (chime sound) is emitted from the speaker built into the monitor, television, and unit without ringing the telephone ringer. ) can be output.

[0020]

[Embodiment] The home PBX device of the present invention includes a home PBX main body 1 similar to the conventional device shown in FIG.
It is equipped with a camera-equipped door intercom handset 2 shown in FIG. 4 connected to the main body 1, and a monitor television unit. In particular, the monitor television unit 3 is connected to extensions 1 to 4 as shown in FIG. A high frequency demodulation circuit 24 connected through a capacitor C1, a display CRT 25 connected to this high frequency demodulation circuit 24, a tone signal detection circuit 26 connected through a capacitor C2, and a monitor power supply control circuit 27.
In addition to the power supply circuit 28, a timer circuit 29, a chime sound generation circuit 30, a speaker 32, and a communication line voltage detection circuit 31 are provided.

Next, the operation of the television/door phone call function of the home PBX apparatus of the present invention using the monitor television unit 3 configured as described above will be explained.

[0022] Depending on the visitor, doorphone handset 2 with camera
When the call button is pressed down, the call signal sending circuit 23
When a calling signal is sent out, the intercom incoming call detection circuit 9 of the home PBX main body 1 detects that there is a call, and the information is applied to the CPU 7.

Therefore, the CPU 7 activates the tone signal sending circuit 13, and connects the extension 1 via the analog switch 14.
In addition to the audio frequency and the modulated video signal, on each line of ~4, repeat at a constant period that does not affect the frequency band of the audio frequency and modulated video signal for activating the monitor television unit 3. Sends out a pulsed single frequency tone signal. At the same time, the CPU 7 activates the camera-equipped doorphone power supply circuit 8, starts supplying power to the camera-equipped doorphone handset 2, and activates the television camera 18 and the modulation circuit 19. At this time, the 16Hz transmission circuit 12 is not activated.

As a result, the camera-equipped door intercom handset 2 transmits the video modulation signal to the high frequency signal amplification circuit 11 of the home PBX main body 1. This video modulation signal is amplified and then passed through a high frequency signal buffer circuit 16 to extensions 1 to 4.
will be sent to.

The tone signal detection circuit 26 of the monitor television unit 3 detects a single frequency pulsed tone signal sent from the home PBX main body 1, starts the timer circuit 29, and starts the timer circuit 29. starts the monitor power supply control circuit 27 and outputs the video signal demodulated by the high frequency demodulation circuit 24 to the CRT 25. And at the same time,
The tone signal detection circuit 26 activates the chime sound generation circuit 30 and generates a chime sound from the speaker 32 indicating that there is an incoming call from the doorbell.

One of the plurality of telephones connected to the terminal
When the machine answers the incoming call, the home PBX main unit 1
The power supply/call detection circuit 15 detects this and inputs a signal to the CPU 7 indicating that one of the terminals has responded.

[0027] With this input, the CPU 7
A switch 14 is controlled to link the door intercom handset 2 with camera and the telephone line of the responding extension, thereby establishing a door intercom call. At the same time, the high frequency signal amplification circuit 11 and the high frequency signal buffer circuit 16 continue to send out video signals to the extension communication path until the intercom call ends.

On the other hand, in the monitor television unit 3, the timer circuit 29 is reset every time the tone signal detection circuit 26 detects a pulsed tone signal sent repeatedly, and the monitor power supply control circuit 27 and The CRT25 is operated continuously to monitor and monitor calls during calls.
Continue to output video to the CRT 25 of TV unit 3.

[0029] By detecting the call line voltage, the call line voltage detection circuit 31 of the monitor television unit 3 prohibits the chime sound generating circuit 30 from ringing the doorbell ringtone during a call. It is prohibited.

[0030]

[Effects of the Invention] As is clear from the explanation based on the above embodiments, a home PB having a TV/door phone calling function can be used.
In the
Since this is performed by activating the chime sound generating circuit in the monitor television unit and generating the chime sound from the speaker, it is possible to achieve the effect that the chime sound can be clearly distinguished aurally from the tone ringer of a telephone.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a monitor television unit of the present invention connected to a home PBX device;

[Figure 2] Conventional monitor connected to home PBX equipment
Block diagram of TV unit,

FIG. 3 is a block diagram of the home PBX main body of the home PBX device of the present invention and the conventional home PBX device;

FIG. 4 is a block diagram of a camera-equipped door intercom handset.

[Explanation of symbols]

1 Home PBX body 2 Door phone with camera 3 Monitor/TV unit 4 Telephone 5 Call detection circuit 7 CPU 13 Tone signal sending circuit 18 TV/camera 19 Modulation circuit 23 Ringing signal sending circuit 25 Display CRT 26 Tone Signal detection circuit 29 Timer circuit 30 Chime sound (ringing sound) generation circuit 32 Speaker

Claims (4)

[Claims] Claim 1: Consisting of a home PBX main body, a camera-equipped door intercom handset connected to the PBX main body, a monitor/TV unit and a telephone connected via an extension line, the camera-equipped door intercom handset In a home PBX device that sends a signal modulated by an image taken by a camera to an extension together with a voice call signal, when the home PBX main body detects a calling signal from the camera-equipped door intercom handset, the voice frequency and A tone signal sending means is provided for sending out a tone signal that does not affect the modulated video signal, and the monitor television unit is provided with a tone signal sending means for sending out a tone signal that does not affect the modulated video signal.
A home PBX device comprising: tone signal detection means for detecting the tone signal; and ringing sound generation means that is activated by the detection signal of the tone signal detection means and generates ringing sound. 2. The home PBX device according to claim 1, wherein the monitor television unit has a built-in speaker, and the output of the ringing sound generating means is sounded by the speaker. 3. The monitor television unit is provided with a timer circuit that is activated by a detection signal from the tone signal detection means and operates for a certain period of time, and means for causing the timer circuit to output a video signal to the display means for a certain period of time. The home PBX device according to claim 1, characterized in that: 4. While one of the telephones connected to the home PBX is talking to the camera-equipped door intercom handset, the tone signal sending means periodically sends out a tone signal to the extension, and 2. The home PBX device according to claim 1, wherein a timer circuit of the unit is repeatedly operated to continue outputting the video signal to the display means.