JPS62149288A - Door phone camera system - Google Patents

Abstract

PURPOSE:To obtain a door phone camera system in which a universal television receiver is used using a conventional door phone by providing a repeater having a light receiving element which receives an optical signal from a call tone receiver having a light emitting element which transmits the optical signal at a monitor device side. CONSTITUTION:A call tone is reported from a microphone 31 in a call signal receiver 24, and it is amplified, and is sound-detected, and a signal is generated with a signal generation means 35, and the optical signal is transmitted with a transmission means 36. The optical signal is received by a light receiving means 38 in a repeater 29, and is amplified at an amplification signal means 39, and is identified and detected at a detection means 40, and is controlled, then an indication is given to a switching circuit 42. The switching circuit switches an RF modulation signal from an outside with an RF signal from a camera 25 by a control indication means 41. Next, a video signal from the camera 25 is sent to the repeater 29 by a coaxial cable which connects a monitor device 26 and the camera 25. It is modulated with an RF modulation signal circuit 43 built in the repeater 29, and through the switching circuit 42, it is displayed on the screen of a television receiver in the monitor device 26.

Description

[Detailed Description of the Invention] Technical Field> The present invention relates to a door phone which is constructed by connecting a door phone equipped with a camera, microphone, speaker, call button, etc. to a monitor device equipped with a monitor TV, a telephone communication device, etc. using a coaxial cable. This relates to camera systems.

<Prior art> In recent years, the development of home automation systems has become more active, and one of them is the installation of doorbells or TV cameras at entrances, etc., so that visitors can be imaged by a monitor TV installed at a suitable location in the home. There is a doorbell camera system.

The conventional doorbell camera system has a camera illumination L, camera lens 2, speaker 3, and call button 4, as shown in Figure 3.
and a doorbell 6 with a microphone 5 etc., a handset 9 with a built-in speaker 7 and a microphone 8, and a dedicated monitor television 10.
A monitor panel with! 1 (or a monitor device in which a communication section and an image receiving section are separated) are connected by a coaxial cable 12.

In the doorbell camera system configured as described above, when a visitor presses the call button 4 of the doorbell 6, the image receiving circuit is activated, the camera captures an image of the visitor illuminated by the lighting, and the image is displayed on the monitor panel 11. Alternatively, the visit may be displayed on the dedicated monitor TV IO of the monitor device, and a ring tone may be sounded to notify the visitor of the visit. Therefore, a telephone call circuit consisting of a microphone 5 and a speaker 3 on the side of the door phone 6 and a handset 9 equipped with a monitor panel 11 or a microphone 8 and a speaker 7 on the monitor device side is used to make a call and respond to the visitor. It has become.

If you use an existing intercom with the above-mentioned doorbell camera system, you will have to purchase and use a new doorbell camera system, which increases the price, and also requires a dedicated monitor as a monitor television for the monitor device. This had the disadvantage that a television had to be used and the cost of the monitoring device was high.

<Objective> In view of the above-mentioned drawbacks, the present invention provides a doorbell camera system that makes effective use of existing doorbells and enables the use of a home general-purpose television receiver as a monitor television for a monitor device. The purpose is to

<Configuration> The doorbell camera system of the present invention includes a microphone/sound receiving means for receiving the ringing sound of an existing doorbell, a signal generating means for converting the signal detected by the detecting means for detecting the sound signal into an optical signal, and a signal generating means for converting the detected signal into an optical signal. A transmitting means having a light emitting element for transmitting, a light receiving means having a light receiving element for receiving an optical signal transmitted from the transmitting means, a detecting means for identifying the signal of the amplified signal means for amplifying it, and a camera image by detecting the signal. an RF modulation signal circuit for converting the video output of the camera into an RF multiplied signal, and a switching circuit for switching either the broadcast RF multiplied signal from the television station or the RF multiplied signal on the camera side by the control instructing means. This is a doorbell camera system.

With the above configuration, when a visitor arrives and the visitor presses a call button on an existing doorbell, a ringing tone such as a chime or a buzzer is announced from the indoor unit of the doorbell installed inside the room. The microphone of the calling signal receiver attached to the doorbell indoor unit receives the calling signal, which is received by the sound receiving means via the amplifying signal means, the received signal is detected by the sound detecting means, and when detected, a signal is generated. The information is transmitted by the transmitting means via the transmitting means. The transmitted signal is received by a light receiving means of a repeater installed on a line connecting a calling signal receiver installed in an indoor unit and a monitoring device, and is detected by a detection means after passing through an amplified signal means. The image of the visitor captured by the camera is displayed on the empty channel of the television receiver, which is switched by the control instruction means, on the monitor television screen of the monitor device.

As a result, this doorbell camera system can utilize existing audio-only doorbells.
Can be used as a doorbell camera system.

<Example> The following is a first example of the doorbell camera system of the present invention.
1 is a schematic configuration diagram showing an embodiment of the doorbell camera system of the present invention, and includes a doorphone outdoor unit 18 equipped with a microphone 15, a call button 16, and a speaker 17, and a speaker 19. - A door phone indoor unit 22 equipped with a handset 21 having a built-in microphone 20, and an existing door phone system in use, which is configured by connecting the door phone outdoor unit 18 and the indoor unit 22 by a dedicated line 23. A calling signal receiver 24 for receiving the ringing tone is installed in the doorphone indoor unit 22, and a camera 25 for showing the visitor.
It consists of a monitor device consisting of a television receiver 26 and a repeater 29 installed on a coaxial cable 27 that connects the camera 25 and the monitor device. The gist of the present invention is to provide a repeater equipped with a light-receiving element that receives an optical signal from a ringer receiver 24 that is located on the monitor device side and is equipped with a light-emitting element that transmits an optical signal. FIG. 2 is a schematic block diagram showing the main parts of an embodiment of the doorphone camera system of the present invention.
A calling signal receiver 24, a repeater 29. Camera 25. It mainly consists of a television receiver 26.

The calling signal receiver 24 has a microphone 31 . Signal amplification means 32.
Sound receiving means 33. Sound detection means 34. Signal generating means 35.
The ring tone is reported from the doorphone indoor unit 24, the ring tone is input from the microphone 31 and amplified by the amplification signal means 32, and the amplified signal passes through the sound reception means 33 and is sent to the sound detection means 34. The detected signal is generated by a signal generating means 35, and an optical signal is transmitted by a transmitting means 36 having a light emitting element.

The transmitted optical transmission signal is received by the light receiving means 38. Amplified signal means 3
9. Detection means 40. Control instruction means 41° switching circuit 42.
The light receiving means 38 having a light receiving element for receiving the optical signal of the repeater 29 consisting of the RF modulation signal circuit 43 receives the signal, the amplified signal means 39 amplifies the signal, and the amplified signal is identified by the detection means 40. The signal is detected, the detected signal is controlled, and an instruction is given to the switching circuit 42. Control instruction means 4
1, the switching circuit switches between the RF modulated signal from the external television station and the RF multiplied signal sent from the camera.

Next, the video signal of the visitor captured by the camera 25 is sent to the repeater 29 via the coaxial cable 27 connecting the monitor device 26 and the camera 25, and the repeater 29
The modulated signal is modulated by an RF modulation signal circuit 43 built in, and the modulated signal is displayed on the television screen of the television receiver of the monitor device 26 via the switching circuit 42.

Furthermore, by using a television receiver as a monitor television as in the embodiment shown in FIG. This is possible via the doorbell.

In FIGS. 1 and 2, 44 is a receiving antenna.

Effects> Since the doorbell camera system of the present invention has the above-described configuration, the ringer receiver installed in the indoor unit of the doorbell can be used to immediately respond to a call from a visitor by using a doorbell system already present in a general household. By transmitting light and receiving optical signals, the image of the visitor can be displayed on a television receiver, so there is no need to install a dedicated monitor television, and the already installed doorbell can be used as a communication circuit. The system can be constructed at low cost and is practically effective.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment of the doorbell camera system of the present invention, FIG. 2 is a block diagram showing main parts of one embodiment of the doorphone camera system of the present invention, and FIG. 3 is a conventional doorphone camera. FIG. 1 is a schematic configuration diagram showing an example of a system. In the drawing, +5fl microphone, 16 is a call button, 17 is a speaker, 25 is a camera, 26 is a television receiver, 2
7 is a coaxial cable, 34 is a sound detection means, 36 is a transmitting means, 38 is a light receiving means, 4I is a control instruction means, and 42 is a switching circuit. Figure 1 ♀ Figure 3

Claims (1)

[Claims] 1. In the doorbell camera system, which consists of a doorbell equipped with a camera, microphone, speaker, call button, etc., and a monitor device equipped with a monitor TV, communication device, etc. connected by a coaxial cable, the existing audio-only doorphone A sound detecting means for detecting sound, a transmitting means having a light emitting element for transmitting the detected sound as a light signal, and a light receiving means having a light receiving element for receiving the light signal are provided, and the received signal is detected. A door intercom camera system characterized in that a video signal from a camera is switched and transmitted to a monitor device by a control instruction means that sends a control signal for controlling a switching circuit.