JPH11136373A - Cordless doorphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cordless doorphone system, in which no wiring work is required and the user is able to respond to a visitor anywhere. SOLUTION: The cordless doorphone system A is configured with a combination of a doorphone D1, having a call button 5 and a wireless transmission- reception section 3 and a cordless telephone slave set D2 having a wireless transmission-reception section 12 that receives a call signal from the doophone D1 in a form of a radio wave signal and enables speech with the doorphone D1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door phone system using a cordless telephone.

[0002]

2. Description of the Related Art In recent years, cordless telephones and the like in which a master unit and a slave unit are not connected by wire but are connected wirelessly are used.
Widely used in homes. Such a cordless telephone is very convenient because it allows a child device to be carried to an arbitrary place in or near a dwelling unit and to communicate with the parent device and a public line via the parent device.

[0003] In addition, there has been developed a simplified portable telephone as a cordless telephone.
Handyphone system). In this system, the cordless telephone handset of the telephone connected to the public line, which is used in ordinary households, allows not only calls with the base unit, but also extension calls between cordless telephone handsets, and even in the city. It is also possible to directly communicate with public lines via the established base station.

[0004] However, as for the intercom connected to this cordless telephone, although the intercom between the parent and child units is cordless, the intercom is still used by being wire-connected to the main unit or a repeater. Extra wiring was required to install the.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and has as its object to provide a cordless intercom system that does not require wiring work and can respond to a visitor anywhere.

[0006]

A cordless intercom system according to claim 1, proposed to achieve the above object, comprises a door phone provided with a call button and a wireless transmission / reception unit, and transmits a call signal from the door phone by radio waves. It is configured in combination with a cordless telephone provided with a wireless transmission / reception unit that receives in the form of a signal and enables communication with a door phone.

[0007] A wireless transmission / reception unit is provided in the intercom, and an extension call and an extension call can be made with a cordless telephone (including a cordless telephone master unit and a slave unit), and a digital signal system is adopted. Cordless telephones include a low power cordless telephone, a PHS (Personal Handy Phone System) telephone, and a telephone capable of making an extension call composed of one or a plurality of child devices combined with a parent device and capable of making internal calls. A mobile phone that makes a call via an exchange can be applied.

According to a second aspect of the present invention, there is provided the cordless intercom system according to the first aspect, wherein the intercom is provided with a means for setting an extension number for calling a predetermined cordless telephone by extension. Is received as an extension call, and extension calls can be made with the intercom. In the cordless intercom system according to claim 3, the intercom includes a television camera, the cordless telephone includes a monitor television, and operates a call button of the intercom to call the cordless telephone according to claim 1 or 2. In such a case, the operator's image is displayed on the monitor television of the cordless telephone for a predetermined period of time, so that the two parties can talk with each other.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the internal configuration of the cordless intercom system of the present invention. This figure shows an example of a cordless intercom system according to claims 1 to 3.

Here, an example is described in which a cordless intercom system is composed of a door phone D1, a cordless telephone handset D2, and a cordless telephone master, but the invention is not limited to this. The doorphone D1 includes a signal processing unit 1 for controlling a signal flow of the entire apparatus, a storage unit 2 for storing control information such as a house code, a wireless transmitting / receiving unit 3 for wirelessly transmitting / receiving a cordless telephone handset D2, a microphone. A communication circuit 4 having an M and a speaker SP; a call button 5 for a visitor to call a dweller; a number button for designating a specific dweller of the dwelling unit (extension number setting means)
6. TV camera 7 for imaging a person who operates doorphone D1, such as a visitor, solar cell panel 8 that receives and receives sunlight, generates electricity, and converts an electromotive force induced by solar cell panel 8 into a drive power supply, And an internal power supply circuit 9 for supplying power to the telephone.

Regarding the cordless telephone handset D2, the same components as those of the door phone D1 will not be described in detail. The cordless telephone handset D2 includes a signal processing unit 10, a storage unit 11 having an extension number storage unit 11A, a wireless transmission / reception unit 12, a communication circuit 13, a display unit 14 having a monitor television 14A, and a key operation unit 15. FIG.
FIG. 3 is a diagram showing an example of a usage mode of the cordless intercom system of the present invention, and FIG. 3 is a procedure diagram showing an example of a procedure of a call between the intercom and the cordless telephone handset.

As shown in FIGS. 2 and 3, for example, when a visitor presses the call button 5 of the door phone D1, the wireless transmission / reception unit 3 transmits an extension call signal to the cordless telephone handset D2. Slave device D2 receives the extension calling signal, rings the ringing ring, and operates key operation unit 15
Is operated, a reception signal is sent out, and a mutual call can be made with the intercom D1 as an extension call. Then, at the end of the call, the key operation unit 1
When the off button (not shown) of No. 5 is operated, a call end signal is sent to the intercom D1, and a call end process is performed.

In this case, the call by the door phone D1 is performed in the form of a simultaneous extension call through the cordless telephone base unit by designating the house code stored in the storage unit 2, and the same house code is set. If it is a cordless telephone, both the parent device and the child device can answer,
Mutual communication with visitors becomes possible. In this case, two-way simultaneous communication can be performed by a time division two-way transmission (TDD) system of a digital signal system.

As described above, according to the cordless intercom system of the present invention, since the intercom is connected cordlessly, the conventional wiring becomes unnecessary, and a call can be made with the cordless telephone handset. Anywhere inside and outside,
It can respond to visitors. Of course, a response at the master unit is also possible. Also, if the cordless phone has a hands-free function, you can operate the call switch to
Hands-free calling is possible.

The door phone D1 shown in FIG. 1 has number buttons 6 displaying, for example, "1 Taro", "2 Ichiro", and "3 Hanako".
After pressing the number button 6 of "1 Taro", call button 5
Is operated, the intercom D1 designates the extension number 1 together with the house code to make a call, so that the designated extension number "1" is stored in the extension number storage unit 11A. Only "Taro"'s cordless telephone handset D2 answers.

In this way, the visitor can make a call directly with "Taro" who has the child device without bothering other dwellers. The doorphone D1 includes the television camera 7, and the cordless telephone handset D2.
Is equipped with the monitor television 14A, so that the dweller who has received the call can make a call while watching the image of the other party simultaneously for a predetermined time.

FIG. 4 is a circuit diagram showing details of an example of a basic circuit of a solar cell panel. The circuit includes a solar cell panel 8, a capacitor C for storing electricity generated in the solar cell panel 8, a diode D for preventing backflow from the capacitor C to the solar cell panel 8, and a current discharged from the capacitor C to a required level. The booster circuit T is configured to increase the voltage to the maximum.

In this way, the electricity generated by the solar cell panel 8 is stored in the capacitor C, discharged and boosted and supplied to the internal power supply circuit 9 to drive the doorphone D1. Therefore, there is no need to connect a power source, and there is no need to replace a dry battery or the like, and the convenience of the cordless intercom system is further improved. FIG. 5 is a schematic diagram illustrating an example of a system in which a simplified mobile phone is used as a cordless phone. Here, as a specific example of a simplified mobile phone, a personal handy phone system (PH
S) is used. 1 and 2 are denoted by the same reference numerals and description thereof is omitted.

In this system, with the same cordless telephone handset D2, a call with the door phone D1, a call with the cordless telephone base unit, a call with another cordless telephone handset D2, and a call through the base station in the city. In addition, it is possible to make a call with a public line, and a door phone is newly added as a component of the personal handyphone system, thereby improving the overall convenience.

[0020]

As can be understood from the above description, according to the cordless intercom system according to the first aspect of the present invention, the intercom provided with the call button and the wireless transmission / reception unit, and the call signal from the intercom are transmitted. Since it is configured by combining with a cordless telephone that receives a radio signal and has a wireless transmission / reception unit that enables communication with the doorphone, it eliminates the need for conventional doorphone wiring and a cordless telephone handset A call can be made between the user and the like, so that the user can respond to visitors anywhere inside and outside the dwelling unit.

According to the cordless intercom system of the second aspect, in addition to the effect of the first aspect, the intercom is provided with a means for setting an extension number for calling a predetermined cordless telephone by extension. The telephone accepts the call from the door phone as an extension call and allows extension calls with the door phone, so visitors can directly talk with the person who has the child device without bothering other residents. You can make a call.

According to a third aspect of the present invention, in addition to the effects of the first or second aspect, the intercom includes a television camera, the cordless telephone includes a monitor television, and operates a call button of the intercom. When the cordless telephone is called, the operator's image is displayed on the monitor of the cordless telephone for a predetermined period of time so that the two parties can talk with each other.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an internal configuration of a cordless intercom system of the present invention.

FIG. 2 is a diagram showing an example of a usage mode of the cordless doorphone system of the present invention.

FIG. 3 is a procedure diagram showing an example of a procedure of a call between a door phone and a cordless telephone handset.

FIG. 4 is a circuit diagram schematically illustrating an example of a basic circuit of a solar cell panel and an internal power supply circuit.

FIG. 5 is a schematic diagram showing an example of a system when a simplified mobile phone is used as a cordless phone.

[Description of Signs] A Cordless Doorphone System D1 Doorphone D2 Cordless Telephone Handset 3,12 Wireless Transmitter / Receiver Unit 1,10 Signal Processing Unit 2,11 Storage Unit 5 Call Button 6 Number Button (Extension Number Setting Means) 7 Television Camera 8 Sun Battery panel 9 Internal power supply circuit 11A Extension number storage unit 14A Monitor television

Claims (3)

[Claims] An intercom provided with a call button and a wireless transmission / reception unit, and a cordless telephone provided with a wireless transmission / reception unit capable of receiving a call signal from the intercom in the form of a radio signal and enabling communication with the intercom. A cordless doorphone system configured by combining 2. An apparatus according to claim 1, wherein said intercom is provided with means for setting an extension number for calling a predetermined cordless telephone by extension.
A cordless intercom system that accepts calls from intercoms as extension calls and enables extension calls with the intercom. 3. The cordless telephone according to claim 1, wherein the intercom includes a television camera, the cordless telephone includes a monitor television, and operates a call button of the intercom to call the cordless telephone. A cordless intercom system in which an operator's image is displayed on a monitor television for a predetermined period of time so that the user can talk with each other.