JPH11308350A - Call tone recognition call display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a call from an existing interphone system by lighting a display light that is installed without the need for any wiring. SOLUTION: When a visitor or the like makes a call operation from a doorphone slave set installed on a house entrance to call a resident in the house, a calling speaker of an interphone mater set installed in the house sounds a call tone S2. The call tone is given to a microphone 40 of a display unit 4 that controls the operation of a display light 3 and the tone is given to a call tone recognition digital signal processor 44 as a digital signal S13 that is processed (sound-electric transduction and A/D conversion) via the microphone and an A/D converter 42 or the like. The call tone recognition digital signal processor 44 collates the received digital signal with a ring pattern of a call tone (call pattern) registered in advance and lights up the display light only when they are in matching with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring tone recognition / call display device, and more particularly to a ring tone recognition / call display device for illuminating a call from an existing intercom device by turning on an indicator light installed without wiring. .

[0002]

2. Description of the Related Art Conventionally, a call display device shown in FIG. 3 has been proposed. The call display device shown in the figure is installed at the entrance of a dwelling unit, a call button 60 that is pressed down when a visitor calls a resident in the dwelling unit, a microphone 61 used to enable a call with the resident, and The intercom slave unit 51 including the speaker 62, the handset 70 installed in the dwelling unit and used by the resident to answer the call and establish a call with the visitor, and the call button 60 of the intercom slave unit 51 are pressed. An intercom master unit 52 includes a calling speaker 71 that emits a ringing sound, and a display lamp 53 that lights a call from a visitor or the like under the control of the display unit 54 to notify the resident. .

Further, the intercom slave unit 51 and the intercom master unit 52 and the intercom master unit 52 and the display unit 54 are connected by transmission lines L51 and L52, respectively, in an appropriate manner. In such a call display device, when a visitor or the like presses the call button 60 of the intercom slave unit 51 installed at the entrance of the dwelling unit to call a resident of the dwelling unit, the intercom master unit 52 is transmitted via the transmission line L51. A calling signal S51 is sent to the calling speaker 71 of the intercom master unit 52, and a calling sound is generated.
A lighting signal S52 for lighting the display lamp 53 is transmitted from the intercom master 52 to which the 51 has been input to the display unit 54 via the transmission line L52, and the display lamp 53 is controlled by the display unit 54 to which the lighting signal S52 has been input. Lights up. Therefore, the resident in the dwelling unit is required to
Ringing tone and indicator light 53 ringed by the ringing speaker 71
By the lighting of, it is possible to confirm a call from a visitor of the dwelling unit entrance.

[0004] In addition, the resident in the dwelling unit who has confirmed the call,
When the handset 70 of the intercom master unit 52 is picked up for calling response, it is hooked off (not shown), and the display unit 5 is transmitted from the intercom master unit 52 via the transmission line L52.
At 4, an extinguishing signal S53 for extinguishing the indicator light 53 is sent out, and the indicator light 53 is extinguished by the control of the display unit 54 to which the extinguishing signal S53 is input, and the standby state is restored. Furthermore, the handset 60 of the intercom master unit 52 used by the resident
Thus, a communication path between the microphone 61 and the speaker 62 of the intercom slave unit 51 used by a visitor or the like is formed via the transmission line L51, and transmission and reception of an audio signal for establishing a call can be performed.

[0005]

However, since the conventional call display device is constructed as described above, the intercom master unit 52 and the display unit 5 installed in the dwelling unit are provided.
It is necessary to connect the indicator light 53 installed on the display unit 4 via the transmission line L52, and if the terminal is not an intercom master unit having a terminal (not shown) to which the indicator light (display unit) can be connected, the mutual wiring is not possible. There was a drawback that it was possible. In addition, when the additional indicator light is installed, there is a problem that the existing wiring needs to be re-wired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and a display unit for controlling the operation of a display lamp is provided with a function of recognizing a ringing tone that is sounded by a ringing speaker of an intercom master unit. By turning on / off the light, wiring between the intercom master unit and the indicator light (display unit) becomes unnecessary, and the construction cost at the time of wiring can be reduced.
It is another object of the present invention to provide a ring tone recognition / call display device that can be used for an intercom master unit that does not have a connection terminal for an indicator light (display unit) and that can improve convenience.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a ring tone recognition call display device according to the present invention is a ring tone recognition call display device for notifying a call by an indicator light instead of a ring tone. A microphone that converts a ringing sound into an electric signal by sound-to-electric conversion, and an A / D that converts the electric signal from analog to digital and converts it into a digital signal by digital signal processing
A converter and a ring tone recognition digital signal processor that emits a lighting signal and turns on an indicator light when the digital signal obtained by the digital signal processing matches the ring tone pattern registered in advance by performing matching and recognition processing. It is provided with.

[0008] According to such a ringing tone recognition and call display device, when a visitor or the like performs a calling operation from a door phone handset installed at the entrance of the dwelling unit to call a resident of the dwelling unit, the intercom installed in the dwelling unit is opened. A ringing tone sounds on the calling speaker of the master unit. This ringing tone is input to a microphone of a display unit that controls the operation of the indicator lamp, and is subjected to signal processing (acoustic-electrical conversion, analog-to-digital conversion) via a microphone, an A / D converter, and the like, as a digital signal for ringing tone recognition. Input to the digital signal processor. The ring tone recognition digital signal processor causes the input digital signal to be collated and recognized with a ring pattern of a ring tone registered in advance,
The indicator lights up only when they match. Therefore, the resident in the dwelling unit can confirm a call from a visitor of the dwelling unit entrance or the like by the ringing sound that is sounded by the calling speaker of the intercom master unit and the lighting of the indicator lamp.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment to which a ring tone recognition / call display device according to the present invention is applied will be described below as an embodiment with reference to the drawings. The call sound recognition call display device shown in FIG. 1 is installed at the entrance of a dwelling unit, and is a call button 1 that is depressed when a visitor calls a resident in the dwelling unit.
0, Microphone 1 used to enable communication with residents
1 and a speaker 12, a handset 20 installed in a dwelling unit and used by a resident to answer a call and establish a call with a visitor, and a door phone 1
The intercom master unit 2 includes a calling speaker 21 that sounds a ringing sound (ringing signal S2) when the calling button 10 is pressed, and a call from a visitor or the like installed on a display unit 4 described later. And the indicator lamp 3 for notifying the resident of the intercom and the ringing tone ringing on the calling speaker 21 of the intercom master unit 2 are recognized, and the indicator lamp 3 is turned on / off.
The display unit 4 is turned off. Further, the intercom slave unit 1 and the intercom master unit 2 are connected by a transmission line L1 in an appropriate manner.

As shown in the block diagram of FIG. 2, the display unit 4 collects (inputs) a ringing sound (ringing signal S2) ringed by the calling speaker 21 of the intercom master unit 2,
Microphone 4 that converts sound-electricity and sends it out as electric signal S12
0, an amplifier 41 for amplifying and transmitting the electric signal S13 transmitted from the microphone 40, and an A / D for converting the electric signal S12 via the amplifier 41 from analog to digital and transmitting it as a digital signal S13 subjected to digital signal processing. Converter 42
A ringing tone pattern memory 43 in which ringing tone patterns (hereinafter, ringing tone patterns) are registered in advance;
The above digital signal S13 is stored in the ringing tone pattern memory 43.
And a timer 45 for counting the lighting time of the indicator light 3 while sending out a lighting signal S14 for lighting the indicator light 3 only when the ringing pattern matches a ring tone pattern registered in advance. And a ring tone recognition digital signal processor 44. The microphone 40 of the display unit 4 is connected to a ringing tone pattern memory 43 at an input / output unit and a ringing tone recognition digital signal having an indicator light 3 connected to an output unit via an amplifier 41 and an A / D converter 42. It is connected to a processor 44.

The operation of the ringing tone recognition / call display device thus constructed will be described below with reference to FIGS.
This will be described with reference to the block diagram of FIG. When a visitor or the like presses a call button 10 of the intercom slave unit 1 shown in FIG. 1 installed at the entrance of the dwelling unit to call a resident in the dwelling unit, a call signal S1 is sent to the intercom master unit 2 via the transmission line L1. Is transmitted, a ringing tone signal S2 is transmitted from the ringing speaker 21 of the intercom master unit 2, and a ringing tone is sounded. When the ringing tone signal S2 is input (collected) to the microphone 40 of the display unit 4, the microphone 40 converts the input ringing tone signal S2 into an electrical signal and an electrical signal S12. This electric signal S12 is amplified by the amplifier 41, and the A / D converter 4
The digital signal is sent to the digital signal processor 44 as a ringing tone recognition signal as a digital signal S13 subjected to analog-to-digital conversion and digital signal processing in step 2.

The ring tone recognition digital signal processor 44, which has received the digital signal S13, makes the digital signal S13 collate and recognize the digital signal S13 with a ring tone pattern previously registered in the ring tone pattern memory 43. The lighting signal S14 for turning on the indicator lamp 3 is transmitted within the set time, and at the same time, the timer 45 starts counting time, so that the indicator lamp 3 to which the lighting signal S14 is input is turned on. When the timer 45 finishes counting, the digital signal processor 4 recognizes the ringing tone.
A turn-off signal S15 for turning off the indicator light 3 is transmitted from 4 and the indicator light 3 to which the light-off signal S15 has been input is turned off and the standby state is restored. Therefore, the resident in the dwelling unit can confirm a call from a visitor to the dwelling unit entrance or the like by the ringing sound that is sounded by the calling speaker 21 of the intercom master unit 2 and the lighting of the indicator lamp 3.

When the resident who has confirmed the call picks up the handset 20 of the intercom base unit 2 for answering the call, the occupant is hooked off (not shown) and the handset 20 of the intercom base unit 2 used by the resident is taken off. A communication path is formed between the microphone 11 and the speaker 12 of the intercom slave unit 1 used by a visitor or the like via the transmission line L1, so that a voice signal for establishing a call can be transmitted and received.

In the above embodiment, the display unit recognizes the ringing tone ringing from the calling speaker of the intercom master unit. However, the present invention is not limited to this. An effect similar to that of the above embodiment is obtained.

[0015]

As is apparent from the above description, according to the ring tone recognition / call display device of the present invention, the display unit for controlling the operation of the indicator lamp is provided with the ring tone generated by the ring speaker of the intercom master unit. By adding a recognition function to turn on and off the indicator light, wiring between the intercom master unit and the indicator light (display unit) is not required, and the construction cost at the time of wiring can be reduced. )
It can also be used for an intercom master unit that does not have a connection terminal, and the convenience can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a ring tone recognition / call display device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a display unit and an indicator light shown in FIG.

FIG. 3 is a block diagram showing a configuration of a conventional call display device.

[Explanation of symbols]

 ... Indicator light 40... Microphone 42... A / D converter 44... Ringing tone recognition digital signal processor S12. ..Digital signal S14 ..... Lighting signal

Claims (1)

[Claims] 1. A ring tone recognition / call display device for notifying a call with an indicator light (3) instead of a ring tone, comprising: a microphone (40) for converting the ring tone into an electrical signal (S12) by sound-to-electric conversion. An A / D converter (42) for converting the electric signal from analog to digital and converting it into a digital signal (S13) by digital signal processing; and a ring tone pattern in which the digital signal obtained by the digital signal processing is registered in advance. And a ringing tone recognition digital signal processor (44) for sending a lighting signal (S14) when the match is made by performing the collation recognition processing and lighting the indicator lamp. .