KR970003468B1 - Video door-phone using television - Google Patents

Abstract

A video door-phone used as a television set is disclosed. The video door-phone comprises an outdoor set(100) and an indoor set(200). The indoor set has a door-phone unit(300) and a television unit(400). In case that there is no visitor, the video door-phone is used as a television set. In case that there is a visitor, the power is provide to the television unit(400) and the outdoor set(100) and the visitor's image is displayed on the screen of the television unit(400).

Description

TV Video Door Phone Device

1 is a schematic diagram of a TV combined video door phone apparatus according to the present invention

2 is a circuit diagram of a preferred embodiment of a video door phone device for both TV and TV according to the present invention.

* Explanation of symbols for main parts of the drawings

100: outdoor set 110: surveillance camera

200: door set 300: door phone circuit

400: TV circuit part L1-L3: Line

C1-C5: control signal SC1-SC2: switching means

CTR: Control Circuit CONV: AC / DC Converter

CNT1-CNT3: Connector TEL: Telephone Circuit

AMP: Voice Amplifier DL: Dial

T: Voice Trans RT: Handset

The present invention relates to a video door phone device, and more particularly to a video door phone device that can be used as a TV.

In general, the video door phone device includes an outdoor set for monitoring the outside of the door with a surveillance camera and interfacing with a visitor, and an in-door set for installing a monitor connected to an outdoor set to drive a monitor and interface with a user. Consists of

The outdoor set has a solid state image pickup device such as a CCD camera, a microphone and a speaker, and a call button. The door set has a monitor, a microphone and a speaker, a door button and a monitor button, a melody sounder and the like. The in-door set supplies power to the outdoor set through a power line, and the outdoor set supplies the visitor's image signal and audio signal to the in-door set through the video line and the audio line. The user's voice signal is supplied to the outdoor set through the set. There are two-wire or four-wire type depending on the connection line or signal and power transmission method between the in-door set and the outdoor set.

In addition, Japanese Utility Model Publication No. 63-64178 is a button installed indoors and outdoors to select indoor and outdoor cameras and to provide a video signal from the camera to either a TV or a VTR.

In general, a conventional video door phone device is manufactured and sold to perform only a door phone function by a wall-mounted device. In addition, the monitor is provided for the monitoring of the outside of the door, but because of the use of a small dedicated monitor, the image quality is not clear, and there is a limitation that is limited to simply performing the monitoring function.

Disclosure of Invention An object of the present invention is to provide a TV-compatible videophone device capable of performing a TV function in normal times and a monitor function in a door phone operation in order to solve the problems of the prior art as described above.

In addition, another object of the present invention is to provide a video combined video phone device having a clear picture quality.

In order to achieve the above object, the apparatus of the present invention is an outdoor set for transmitting a visitor's image and voice, and the person who can communicate with the visitor while monitoring an image installed in the room and connected to the outdoor set and transmitted. A video door phone apparatus having a door set, wherein the door set includes a door phone portion and a TV portion, and the door phone portion is normally operated by a TV button operation. It supplies power to the TV unit and outputs the audio. When the door phone function, the TV Braun tube is used to supply power to the outdoor set and the TV unit by door or monitor button operation. Switching to be displayed on.

In particular, the door phone portion is characterized by claim 2.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 shows a schematic diagram of a video-video phone apparatus for both TVs according to the present invention. In FIG. 1, 100 is an outdoor set, and 200 is an indoor door set. The outdoor set 100 has a surveillance camera 110, that is, a solid state image pickup device, a microphone, and a speaker 120 call button 130.

The in-door set 200 is largely divided into a door phone unit 210 and a TV unit 220. The door phone unit 210 has a handset 212, a display lamp 214, buttons 216, and a melody sounder 218. The line L1 connects the in-door set 200 and the outdoor set 100 by four lines of a power line, a ground line, a video line, and an audio line. Line L2 is for connecting with the guard intercom in a multi-family house or apartment house, and line L3 is a telephone line for connecting with a telephone company.

The TV unit 220 includes an antenna 227, a CRT 224, a volume controller 226, a channel selector 228, and a power supply lamp 230.

The buttons 216 of the door phone unit 210 are a guard room button, a door button, a monitor button, and a TV button from above, and the display lamps 214 indicate an operation mode according to each button operation.

Referring to FIG. 2, a circuit configuration diagram of an in-door set of a video door phone apparatus for a TV as well as the present invention is largely divided into a door phone circuit unit 300 and a TV circuit unit 400.

The door phone circuit unit 300 has a connector CNT1 for connection with the outdoor set.

It also has a switching means for TV / monitor switching, for example a relay RY1, a switching means for switching the guard / door entrance, for example a relay RY2, a switching means for telephone / interphone switching, for example a relay RY3. The relay RY1 switches and switches the video signal and the audio signal supplied from the TV circuit unit 400 to the TV circuit unit again when the TV mode is selected by the control signal C3. The video signal and the audio signal supplied from the door set side are switched to be supplied to the TV circuit unit 400. The relay RY2 is switched so that the line L2 is connected to the voice transformer T when the guard room is selected by the control signal C4, and the audio line of the line L1 is connected to the voice transformer when the door is selected. do. The relay RY3 is switched by the control signal C5 so that the line L3 is connected to the telephone circuit TEL in the telephone mode, and the voice transformer T is connected to the telephone circuit TEL in the interphone mode. do.

The telephone circuit TEL includes a dial portion DL and a handset RT. The speaker SP1 is driven by the guard room or the door ring tone signal through the melody signal generated from the call tone detector DET1 connected to the telephone line L3 and the voice transformer T for the sounder for generating the call tone. To generate a ringing tone. The AC / DC converter (CONV) inputs 110V or 220V AC power to supply DC 15V and B + DC power. The DC 15V power supply is supplied to the driving power supply of the TV circuit unit 400 through the switching means SC1, and is also supplied to the DC12V power supply of the outdoor set through the switching means SC2. The switching means SC1 switches the power supply in response to the control signal C1, and the switching means SC2 controls switching to be supplied by AC-DC conversion to DC 15V in response to the signal C2. The control circuit CTR drives and displays the light emitting diodes LED1-LED4 for the corresponding mode according to the pressing operation of the guard room button B1, the door button B2, the monitor button B3, and the TV button B4. To generate the control signals C1-C5. In addition, the detection signal is input from the detector DET2 connected to the guard room line to generate the control signals C4 and C5 for controlling the relays RY2 and RY3. Reference numeral AMP is a voice signal amplifier.

The TV circuit unit 400 is a color TV circuit, a tuner unit 402 having an antenna connected and tuning a corresponding frequency by channel selection, and demodulating and detecting an intermediate frequency from a frequency of a corresponding channel tuned by the tuner unit 402, and then performing a video. An IF unit 404 for outputting a signal and an audio signal, a video processor 406 for receiving and processing an input video signal, a CRT 408 for displaying a screen according to the output signal of the video processor 406, and An audio processor 410 receives and processes an audio signal, and a speaker 412 outputs voice according to an output signal of the audio signal processor 410.

Effects of the present invention configured as described above are as follows. When the commercial AC power is supplied, if the TV mode is selected by pressing the TV button B4, the relay RY1 is switched to the TV mode, and the TV circuit unit 400 performs a TV function. At this time, the switching means SC1 is turned on so that power is supplied to the TV circuit unit 400 to be in a power-on state. Therefore, the user can select a desired channel to watch a TV program.

During TV viewing, when the visitor presses the call button 130 in the outdoor set, the call tone signal is transmitted along the audio line of the line L1 to the speaker SP1 through the relay RY2 and the voice transformer T. Delivered to generate a ring tone. When the user hears the ringing tone and lifts the handset RT and presses the door button B2, the relay RY1 switches to the monitor mode, whereby the image signal of the visitor transmitted on the video line of the line L1 is relayed to the relay RY1. ) Is displayed on the TV CRT 408 as a screen. Thus, the user can monitor the visitor and interact with the visitor.

When the user presses the monitor button B3, the relay RY1 is switched to the monitor mode so that the situation outside the door is displayed on the TV CRT 408 so that the situation outside the door can be monitored indoors.

When the user presses the guard room button B1, the relay RY2 is switched to the guard room mode so that the line L2 is connected to the handset (RT) through the relay RY2 and the voice transformer T so that the guard room intercom call is possible. You can also talk to other households by exchanging guards.

When it is connected to a telephone line, it is detected by the ring tone detector DET1 of the telephone line and supplied to the control circuit CTR. The control circuit CTR generates a control signal C5, thereby switching the relay RY3. So that the handset (RT) is connected to the telephone line.

As described above, the present invention can be used not only as a video door phone function but also as a TV function, so that it can be used as a TV in normal times and as a monitor in the door phone function, so it can perform two functions as one and economically and efficiently. The function also displays the TV resolution so that the monitoring screen can be displayed more clearly.

Claims (2)

It has an outdoor set for delivering the visitor's image and voice, and an indoor set for indoor communication with the visitor while monitoring the image transmitted in connection with the outdoor set. A video door phone device including a TV as an output device, wherein the in-door set includes a door phone part and a TV part, and the door phone part is supplied with power to the TV part by a normal TV button operation and demodulated and detected by the TV part. It selects video and audio signals and displays them on TV CRT and outputs audio. When door phone function, visitors image signal is supplied to outdoor set and TV unit simultaneously by door or monitor button operation. TV to switch to display on the TV CRT Combined video door phone device. The apparatus of claim 1, wherein the door phone unit comprises: first switching means for switching power to the TV unit in response to a first signal; Second switching means for switching power to the outdoor set in response to a second signal; Third switching means for supplying a video and audio signal supplied from the outdoor set and a video and audio output unit of the TV unit in response to a third signal; A voice transformer for coupling an audio line connected to the outdoor set to a melody sounder, an interphone handset circuit, and a voice amplifier; And control means for outputting the first to third control signals in response to an entrance button, monitor button, and TV button operation.