JP2522228B2 - Door phone with camera - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door intercom device with a camera installed in a common entrance, etc., and an image obtained by a television camera (hereinafter abbreviated as a camera) is a television receiver in a dwelling unit (hereinafter abbreviated as a receiver). ) Etc.

[0002]

2. Description of the Related Art An intercom and a camera are installed at a common entrance of an apartment house, and a camera is used to capture an image of a visitor or the like based on a call operation of the intercom by a visitor or the like, and the image is displayed on a receiver in a dwelling unit. With the intercom system with a camera that allows you to talk through the intercom while watching the images of visitors on the screen of the receiver, a dedicated signal transmission line is required to wire the video signal from the camera, and the existing It is troublesome to lay this signal transmission line in a building or the like, and it may cause an aesthetic problem depending on the structure of the building. As a countermeasure against this, for example, a video signal from a camera is modulated into a high frequency signal of an empty channel of television broadcasting, mixed with a signal line for co-listening of television broadcasting, etc. and transmitted to each dwelling unit and input to a receiver. There are things that can be projected.

However, in such a device, in order to confirm a visitor or the like on the screen of the receiver, two operations of switching the reception channel of the receiver to the channel of the signal from the camera and further off-hooking the communication device are performed. Since it has to be done and is troublesome and inconvenient, improvement has been demanded.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when the telephone of the dwelling unit is off-hook in response to a call, the identification signal of the common entrance that has been called is sent to the dwelling unit via the call signal line. It is sent out and it is judged from which joint entrance the call is made by the discrimination of this identification signal.
Based on this, a remote control signal (hereinafter abbreviated as remote control signal) that switches the receiving channel of the receiver to the channel of the high frequency signal from the common entrance is sent to the receiver, so that the screen of the receiver switches to the image of the entrance. The present invention provides a door intercom device with a camera.

[0005]

In order to solve the above-mentioned problems, the present invention uses the intercom installed in a common entrance or the like to make a call through a communication device in a dwelling unit and uses a camera installed in the entrance or the like to identify a visitor or the like. In a case where a captured image is displayed on a receiver or the like in a dwelling unit, an operation unit for performing a calling operation of the dwelling unit, a code generation unit that generates an identification code of the entrance based on the calling operation of the operation unit, and the dwelling unit PB signal detection unit for detecting dial signals from the like, and video signals output from the camera based on the calling operation for each common entrance
An entrance section including an RF modulation section that appropriately modulates a high frequency signal of a set empty channel such as television broadcasting, and a control section that controls the operation section, the code generation section, the PB signal detection section, the RF modulation section, and the like. A mixing unit that mixes a high-frequency signal from the entrance unit with a signal line for television broadcasting or the like, a distributor that distributes the signal from the mixing unit to a plurality of dwelling units, and a signal from the code generating unit to the operation unit. Private telephone exchange (hereinafter referred to as PBX) that exchange-connects the dwell unit called by
And a receiver for receiving a high-frequency signal from the common unit, a memory unit for storing identification code data of each common entrance, and a memory unit for storing the identification code from the entrance unit. And a dwelling unit including a remote control signal generation unit that generates a remote control signal for switching the reception channel of the receiver to a desired channel based on a signal from the determination unit. An intercom device with a camera is provided.

[0006]

With the above-described structure, in the intercom system with camera according to the present invention, if the user inputs the dwelling unit number and presses a button such as "call", the call signal is transmitted via the PBX. It is sent to the dwelling unit. If the telephone of the dwelling unit is off-hook by the ringing tone, this off-hook is
The intercom of the common entrance is detected via the BX, and in response thereto, the identification signal of the common entrance is transmitted to the dwelling unit. In the dwelling unit, the input identification signal is compared with the data stored in the dwelling unit to determine which of the common entrances, and the remote control signal generation unit generates the required remote control signal based on this determination. The receiver's receiving channel is switched to the high-frequency signal channel from the camera installed at the common entrance. Confirm the visitor on the image of the receiver and press the predetermined button on the telephone if you want to make a call. The signal from this button operation is transmitted to and detected at the common entrance via the PBX, so that a call can be made between the doorphone at the common entrance and the telephone at the dwelling unit. When the call ends and the phone goes on-hook, the remote-control signal generator outputs a remote-control signal for selecting the previously sent channel in response to this on-hook, and the receiving channel of the receiver returns to the original channel. To do.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a door intercom device with a camera according to the present invention. FIG. 1 is a block diagram of a main part of an embodiment of a doorphone device with a camera according to the present invention. In the figure, a is a plurality of common entrances provided in the housing complex, b is a common area, and c is a plurality of housing units of the housing complex. The common entrance 1 is a camera, which captures a visitor or the like and outputs a video signal. 2 is an RF modulator, which is a camera 1
The video signal is appropriately modulated into, for example, a signal of an empty channel of television broadcasting. An operation unit 3 is provided with a numeric keypad, a "call" button, etc., and is used to call a dwelling unit. A dial signal generator 4 outputs a DTMF (multi-frequency code) signal or the like based on the operation of the operation unit 3. A code generator 5 generates a code for identifying the common entrance a. A PB signal detector 6 detects a dial signal such as a DTMF signal, which is transmitted by operating the dwelling unit C or the like. 7 is a microphone for inputting voice for a call with a dwelling unit. Reference numeral 8 is a speaker that outputs a response voice from the dwelling unit. Reference numeral 9 is a communication circuit, which converts a signal of two lines from a dwelling unit into a signal of four lines (a reception signal and a transmission signal). Reference numeral 10 is a control unit, which controls each part of the common entrance section b.

A common section 11 is a mixing section for mixing a signal from the RF modulation section 2 with a signal line 12 for co-listening from a television broadcast receiving antenna or the like. A distributor 13 distributes the signal from the mixing unit 11 to each dwelling unit c. Reference numeral 14 denotes a PBX, which exchanges a signal based on the operation of the operation unit 3 or a call signal of an intercom etc. to each dwelling unit c.

Reference numeral 15 of the dwell unit C is an image receiver, which receives a high frequency signal input through the distributor 13. 16 is the home PBX (H
In PBX), the signal via PBX14 is exchange-connected to the telephone in the dwelling unit. Reference numeral 17 denotes a telephone, which communicates with the intercom doorphone at the common entrance or the telephones of other dwelling units. A memory unit 18 stores code data set for identification for each common entrance, channel data for each common entrance modulated by the RF modulator 2, and the like. A discriminating unit 19 compares the signal from the code generating unit 5 with the data read from the memory unit 18 to discriminate the coincidence. A remote control signal generator 20 generates a signal for selecting a channel modulated by the RF modulator 2 based on the discrimination by the discriminator 19. Reference numeral 21 denotes a control unit that controls each part of the dwelling unit c.

Next, the operation of the intercom apparatus with camera according to the present invention will be described. A visitor of the common entrance department a inputs the dwelling unit number of the visited place by operating the number keys of the operation unit 3 and "calls".
I press the button. The signal generated by the dial signal generator 4 based on the operation of the "call" button is transmitted to the PB via the controller 10.
The signal is sent to X14, and upon detection of this signal, the PBX 14 opens a signal line with the common entrance a and sends a dial tone signal to the common entrance a. In the common entrance a, a dial tone signal is detected via the control unit 10, and a dial signal generation unit 4 via the control unit 10 generates a dial signal such as a DTMF of a dwelling unit number based on the operation of the numeric keypad, Send to PBX14. PBX14
On the basis of this dial signal, the switch connects to the signal line of the corresponding dwelling unit and sends out a calling signal. On the other hand, the camera 1 is activated by a signal from the control unit 10 based on the calling operation of the operation unit 3, and the visitor or the like is imaged. The video signal from the camera 1 is input to the RF modulator 2 and is appropriately modulated into, for example, a signal of an empty channel of television broadcasting. RF modulator 2
The channel to be modulated with is set in advance so that it will be different for each common entrance. The signal from the RF modulator 2 is mixed with the viewing signal line 12 for television broadcasting or the like through the mixer 11, distributed by the distributor 13 to each dwelling unit, and input to the receiver 15 of the dwelling unit c.

Now, the call signal from the PBX 14 is input to the HPBX 16 of the dwelling unit c and is exchange-connected through the control unit 21 to the telephone set 17 which is set to be exchange-connected in advance.
Output ring tone. When the telephone set 17 is off-hooked in response to the ringing tone, this off-hook is detected by the PBX 14 via the HPBX 16 via the control unit 21, and, for example, the polarity of the DC voltage for operating the intercom etc. superimposed on the signal line is reversed. . The common entrance section a detects the off-hook of the telephone 17 of the dwelling unit c by reversing the polarity through the control section 10, and the identification signal of the common entrance section via the code generation section 5, for example, "A" indicating the common entrance and A code of "1" representing the common entrance a is generated and sent to the dwelling unit c through the PBX14. The code of "A, 1" input to the housing unit c is input to the determination unit 19 via the control unit 21 that is exchange-connected to the HPBX 16, and the memory unit
Compare the data read from 18 to determine the common entrance. Then, based on this determination, the memory unit is passed through the control unit 21.
The channel data of the high-frequency signal output from the common entrance of the memory 18 is read, that is, the data for switching the reception channel of the receiver 15 to the channel of the signal from the common entrance, is read by the remote control signal generation unit 20, for example, , Generates an infrared remote control signal and sends it to the receiver 15. At this time, a receiver operation detection unit (not shown) detects whether or not the receiver 15 is in operation, and if not in operation, first sends a remote control signal to turn on the power of the receiver 15, and then, A channel switching signal may be transmitted. As a result, the receiver 15 receives the video signal from the camera 1 input via the distributor 13 and displays the image of the common entrance on the screen.

When a visitor at the common entrance is confirmed on the screen of the receiver 15 and a call is made with the intercom, the predetermined button of the telephone 17, for example, "*" is pushed. By this operation, the DTMF signal of "*" sent from the telephone set 17 is transmitted to the common entrance a through the signal line, and the PB is sent through the control unit 10.
Detected by the signal detector 6, and based on this detection, the controller
The call circuit 9 is activated via 10. As a result, the voice signal from the microphone 7 is transmitted to the telephone set 17 through the call circuit 9 and the like, and the response voice signal from the telephone set 17 is output as sound through the speaker 8. When the telephone call is completed and the telephone set 17 is hooked on, the remote control signal generation unit 20 transmits the previously selected channel selection signal via the control unit 21 based on the signal from the HPBX 16 by this on-hook, and the receiver 15
The receiving channel of is restored to the original channel.

[0013]

As described above, according to the door intercom apparatus with a camera of the present invention, the video signal from the camera installed at the common entrance of an apartment house is transmitted to the co-listening signal line of television broadcasting. mixed and transmitted, visited the dwelling unit
Only the TV receiver of the
Dynamically switch to the channel of the signal from the joint entrance.
Because it receives this signal,
Only the residents of the dwelling unit can see the visitors,
Also said that the same effect as when a dedicated signal line for transmitting the video signal of the camera at the common entrance was laid and a monitor dedicated to this camera was installed in each dwelling unit, and the equipment cost was low It has advantages.

[Brief description of drawings]

FIG. 1 is a main part block diagram of an embodiment of a door phone apparatus with a camera according to the present invention.

[Explanation of symbols]

 (A) Common entrance area (b) Common area (c) Housing area (1) Camera (2) RF modulation area (3) Operation area (5) Code generation area (6) PB signal detection area (7) Microphone (8) Speaker (11) Mixing area (12) Common listening signal line (14) PBX (15) Receiver (17) Telephone (18) Memory area 19 Discriminator 20 Remote control signal generator

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04Q 3/58 107 H04Q 3/58 107

Claims (1)

(57) [Claims] 1. An image of a visitor or the like taken by a television camera installed in the entrance or the like is used for a television receiver or the like in the residence by making a call through a communication device in the housing with an intercom installed in a common entrance or the like. In the projected image, an operation unit for calling the dwelling unit, a code generation unit that generates an identification code of the entrance based on the calling operation of the operation unit, and a PB signal detection that detects a dial signal from the dwelling unit, etc. Section, an RF modulation section for appropriately modulating a video signal output from the television camera based on the calling operation into a high frequency signal of an empty channel such as television broadcasting set for each common entrance, and the operation Section, code generation section,
A doorway section including a PB signal detection section and a control section for controlling the RF modulation section, a mixing section for mixing a high-frequency signal from the doorway into a signal line for television broadcasting, and a plurality of signals from the mixing section. Common area consisting of a distributor for distributing to the dwelling unit of the house and a private telephone exchange for exchanging and connecting the signal from the code generating unit to the dwelling unit called by the operation of the operation unit and for exchanging the call signal with the intercom. And a television receiver that receives a high-frequency signal from the common unit,
A memory unit that stores identification code data and the like of each joint entrance, a determination unit that compares the identification code from the entrance unit with the data read from the memory unit, and the television image reception based on a signal from the determination unit. An intercom system with a camera, comprising a remote control signal generator for generating a remote control signal for switching a reception channel of a machine to a desired channel, and a dwelling unit.