JP3532732B2 - TV intercom equipment for apartment houses - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television intercom apparatus, and more particularly, to a collective entrance machine provided with a plurality of cameras that can be switched so that the state of the entire collective entrance can be reliably grasped. Related to TV intercom equipment for multi-family housing. 2. Description of the Related Art Conventionally, as shown in FIG. 2, collective entrance machines EQ11, EQ12, EQ13 provided with a built-in television camera CQ3 and an audio processing circuit 61, a living room television monitor BQ2, a living room parent device DQ2, a video control system. There is known a television intercom device for a multi-family housing composed of a telephone PQ2 and a call controller VQ2. [0003] The collective entrance machines EQ11, EQ12, EQ13 are connected to a video controller PQ2 and a call controller VO2 via a video transmission line L11 and an audio transmission line L13, respectively. The living room television monitor BQ2 is connected to the video controller PQ2 via the video distribution line L12. The call controller VQ2 is connected to the parent device DQ2 via the call wiring L14. The built-in television camera CQ3 of the entrance hall EQ11 is composed of a CCD camera 53, an FM modulation circuit 54, an FM amplification circuit 55, a video circuit 52 including a control signal demodulation circuit 56, a multiplexing circuit 51, and a power supply 57. The output side of the connected multiplexing circuit 51 is connected to the power supply 57 and the input side of a control signal demodulation circuit 56 provided in the video circuit 52, respectively. A voice processing circuit 61 includes a calling circuit 58, a calling circuit 59 to which a calling switch K11 is connected, and a multiplexing circuit 60.
And the output sides of the speech circuit 58 and the calling circuit 59 are connected to the input side of the multiplexing circuit 60 to which the speech transmission line L13 is connected. The living room television monitor BQ2 includes a power supply 77, a multiplexing circuit 71 and an FM demodulation circuit 73, a video signal amplification circuit 74, a television monitor 75, and a control signal modulation circuit 76.
The output side of the multiplexing circuit 71 to which the video distribution line L12 is connected is connected to the power receiving side of the video circuit 72 via the power supply 77. The output side of the multiplexing circuit 71 is connected to an FM demodulation circuit 73 provided in the video circuit 72,
The output side of 3 is connected to a television monitor 75 via a video signal amplifier circuit 74. The input side of the control signal modulation circuit 76 provided in the video circuit 72 is a pan-tilt button SW3
And the output side is connected to the input side of the multiplexing circuit 71. The parent device DQ2 comprises a multiplexing circuit 78, a communication circuit 79, and a control signal circuit 80. The multiplexing circuit 78 to which the communication line L14 is connected is connected to the communication circuit 79 and the control signal circuit 80, respectively. The output side of the signal circuit 80 is connected to the communication circuit 79. The output side of the control signal circuit 80 is connected to the control side of the power supply 77 of the room television monitor BQ2. The video controller PQ2 has a video signal switching circuit 8
1, multiplexing circuit 82, FM amplifier circuit 83, multiplexing circuit 84,
The video signal switching side of the video signal switching circuit 81 which is composed of power supplies 85 and 86 and a distribution circuit 87 and to which the video transmission line L11 is connected is connected to the input side of the multiplexing circuit 82 to which the power supply 85 is connected. Is connected to an input side of a multiplexing circuit 84 to which a power supply 86 is connected via an FM amplifier circuit 83. The output side of the multiplexing circuit 84 is connected to the distribution circuit 87, and the distribution output side of the distribution circuit 87 is connected to the video distribution line L12. The call controller VQ2 comprises a separation circuit 91, a control signal conversion circuit 92, a transmission amplification circuit 93, a reception amplification circuit 94, and a multiplexing circuit 95. The separation side of the separation circuit 91 to which the voice transmission line L13 is connected is a control signal. The video signal switching control signal side of the control signal conversion circuit 92 is connected to the control side of the video signal switching circuit 81 provided in the video controller PQ2. The communication control signal side of the control signal conversion circuit 92 is connected to a multiplexing circuit 95, the transmission amplification circuit 93 on the downstream audio signal side is a separation circuit 91, and the reception amplification circuit 94 on the upstream audio signal side is a multiplexing circuit. 95 respectively. The multiplexing circuit 95 is a multiplexing circuit 78 provided in the room master unit DQ2.
Is connected via the communication line L14. Note that the call distribution line L14 is paired with the video distribution line L12. In such a television intercom system for a condominium, for example, when a main switch DQ2 is called by a call switch K11 provided in a front door EQ11, a call signal is passed through a multiplexing circuit 60 of a voice processing circuit 61. The call is transmitted to the call transmission line L13. The call signal sent to the call transmission line L13 is separated by the separation circuit 91 of the call controller VQ2 and sent to the control signal conversion circuit 92. Control signal conversion circuit 9
2 converts the incoming call signal into a video signal switching control signal and a speech control signal, and the video signal switching control signal is multiplexed to a video signal switching circuit 81 provided in the video controller PQ2. The signal is sent to the circuit 95. When the video signal switching signal is sent to the control side of the video signal switching circuit 81 provided in the video controller PQ2, the entrance hall EQ11 and the video controller PQ2 are connected. When the entrance hall EQ11 and the video controller PQ2 are connected, power is supplied from the power source 85 superimposed on the multiplexing circuit 82 of the video controller PQ2 via the multiplexing circuit 51 provided in the built-in television camera CQ3 of the entrance hall EQ11. To the power supply 57, and the video circuit 52 becomes active. As a result, the video signal generated by the CCD camera 53 is transmitted to the video transmission line L11 via the FM modulation circuit 54, the FM amplification circuit 55, and the multiplexing circuit 51. The video signal transmitted to the video transmission line L11 is a video controller PQ2
Multiplexing circuit 82 to video signal switching circuit 81 provided in
The signal is sent to the FM amplification circuit 83 and the multiplexing circuit 84. A power supply 86 for a living room television monitor is superimposed on the multiplex circuit 84. The video signal input to the multiplexing circuit 84 is transmitted to the multiplexing circuit 71 provided in the in-room television monitor BQ2 via the video distribution line L12 by the distribution operation of the distribution circuit 87. The call control signal input to the multiplexing circuit 95 via the control signal conversion circuit 92 is transmitted to the multiplexing circuit 78 of the parent device DQ2 via the call distribution line L14. The communication control signal multiplexed in the multiplexing circuit 78 is sent to the control signal circuit 80, and the communication circuit 79 operates under the control of the control signal circuit 80. Upon detecting the call, the control signal circuit 80 activates the power supply 77 of the living room television monitor BQ2. When the power supply 77 becomes active, the multiplexing circuit 71 supplies the superimposed power to the video circuit 72 via the power supply 77 and
2 is active. The video signal multiplexed by the multiplexing circuit 71 is transmitted to the television monitor 75 via the FM demodulation circuit 73 and the video signal amplification circuit 74. The control signal modulation circuit 76 operates when the pan / tilt button SW3 is operated.
It is provided for modulating and outputting a control signal such as a pan / tilt signal. As a result, the communication circuit 79 and the collective entrance machine EQ
An upstream voice signal and a downstream voice signal with the 11 communication circuits 58 are transmitted and received via the communication controller VQ2. [0015] In the conventional TV intercom system for a collective housing, only one camera capable of imaging only a part of the collective entrance is provided in the collective entrance machine.
There was a drawback that it was not possible to reliably grasp the entire entrance hall. The present invention has been made in order to solve such a problem, and provides a television intercom device for a multi-family residence in which a plurality of cameras which can be switched so as to reliably grasp the state of the entire multi-family entrance are provided in the multi-family entrance machine. It is intended to be. In order to achieve the above object, a video intercom system for a multi-family residence is provided with a built-in television camera for taking a picture of a visitor, which is provided at the multi-family entrance, for transmitting video. Connected to the video controller via a line, the video controller is distributed and connected to each room's TV monitor via a video distribution line, and the video signal captured from the TV camera is transmitted from the video controller to the TV monitor of the room TV monitor. In the multi-family TV intercom system, an external TV camera for monitoring the area around the multi-entrance is located at the multi-entrance, and the living room TV monitor is either the built-in TV camera or the external TV camera. Switch and a camera selection control signal is input when the switch is pressed, and a modulated camera selection control signal is output. A control signal modulation circuit, a multiplexing circuit for transmitting a camera selection control signal superimposed and modulated on the video distribution line transmitting the video signal to the video distribution line, and a camera selection control signal based on the signal superimposed on the video distribution line A multiplexing circuit for transmitting a separated camera selection control signal superimposed on a video transmission line for transmitting a video signal, and a camera selection control signal from a signal transmitted via the video transmission line. A separation circuit for separation, a demodulation circuit for demodulating a camera selection control signal obtained by separation by the separation circuit, and switching between the built-in television camera and an external television camera according to the demodulated camera selection control signal to produce an image. And a switch connected to the transmission line. In such a multi-family television intercom apparatus, a changeover switch provided on a living room television monitor is operated to select either the built-in television camera or the external television camera. When the changeover switch provided on the living room television monitor is operated, the camera selection control signal is modulated by the control signal modulation circuit. The modulated camera selection control signal is multiplexed by a multiplexing circuit and sent to a video distribution line. The separation circuit connected to the video distribution line separates the camera selection control signal, and sends it out to the video transmission line from the multiplexing circuit provided in the video controller. The camera selection control signal transmitted via the video transmission line is separated by a separation circuit provided in the entrance hall, and the camera selection control signal obtained by separation by the separation circuit is demodulated by a demodulation circuit. The switch is operated by the demodulated camera selection control signal, and connects either the built-in television camera or the external television camera to the video transmission line. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a television intercom apparatus for an apartment house according to the present invention will be described in detail with reference to the drawings. In FIG. 1, a multi-family television intercom apparatus according to the present invention includes multi-entry machines EQ1, EQ2, E having a built-in television camera CQ1 at a multi-entry entrance for imaging a visitor.
Q3 is connected to the video controller PQ1 via the video transmission line L1, and the video controller is distributed and connected to each room television monitor BQ1 via the video distribution line L2, and the video signal taken from the TV camera is video controlled. TV monitor B from the machine PQ1
In the TV intercom system for a collective housing displayed on the TV monitor 25 of Q1, an external TV camera CQ2 for monitoring the periphery of the collective entrance is arranged at the collective entrance,
The living room television monitor BQ1 outputs a modulated camera selection control signal by inputting a camera selection control signal when the changeover switch SW1 is pressed and a switch SW1 for selecting either the built-in television camera CQ1 or the external television camera CQ2. A control signal modulation circuit 26 for transmitting a video signal, a multiplexing circuit 21 for transmitting a camera selection control signal superimposed and modulated on a video distribution line L2 to the video distribution line L2, and a video signal distribution line L2. A separation circuit 38, 39, 40 for separating a camera selection control signal from a signal, a multiplexing circuit 32 for transmitting a separated camera selection control signal superimposed on a video transmission line for transmitting a video signal, and a video transmission line L1
A separation circuit 12 for separating a camera selection control signal from a signal transmitted through the communication circuit, a demodulation circuit 13 for demodulating a camera selection control signal obtained by separation by the separation circuit 12,
A switch 14 is provided for switching between the built-in television camera CQ1 and the external television camera CQ2 according to the demodulated camera selection control signal and connecting to the video transmission line L1. Separation circuit 1 provided in the entrance hall EQ1
2 (camera selection control signal) is connected to the video transmission line L1, and the output of the separation circuit 12 is connected to the control signal demodulation circuit 1
3 is connected to the control side of the switch 14. The movable contact of the switch 14 is connected to the video transmission line L1, the normally closed contact is connected to the built-in television camera CQ1, and the normally open contact is connected to the external television camera CQ2. The entrance hall EQ1 and the video controller PQ1 are connected by a video transmission line L1, and the living room television monitor BQ1 is connected to the video controller PQ1 via a video distribution line L2. The call controller VQ1 is connected to the room master unit DQ1 via the call line L4.
Is connected to The built-in television camera CQ1 of the collective entrance machine EQ1 has an image composed of a multiplexing circuit 1 (control signals for video signals, power receiving side power supply, pan / tilt, etc.), a CCD camera 3, an FM modulation circuit 4, an FM amplification circuit 5, and a control signal demodulation circuit 6. The output side of the multiplexing circuit 1 comprising the circuit 2 and the power supply 7 and connected to the normally closed contact of the switch 14 is connected to the power supply 7 and the video circuit 2.
Are connected to the input side of the control signal demodulation circuit 6 provided in the control circuit. The voice processing circuit 11 comprises a call circuit 8, a call circuit 9 to which a call switch K1 is connected, and a multiplexing circuit 10 (call signal, upstream voice signal, downstream voice signal). The output side is connected to each of the multiplexing circuits 10 to which the communication transmission line L3 is connected. The living room television monitor BQ1 includes a power supply 27, a multiplexing circuit 21 (video signal, power receiving side power supply, pan / tilt control signal, camera selection control signal), an FM demodulation circuit 23, a video signal amplification circuit 24,
TV monitor 25, control signal modulation circuit 26 to which camera selection switch SW1 and pan / tilt switch SW2 are connected
The output side of the multiplexing circuit 21 to which the video distribution wiring L2 is connected is connected to the power receiving side of the video circuit 22 via the power supply 27. The output side of the multiplexing circuit 21 is connected to an FM demodulation circuit 23 provided in the video circuit 22.
The output side of 3 is connected to a television monitor 25 via a video signal amplifier circuit 24. The output side of the control signal modulation circuit 26 provided in the video circuit 22 is connected to the input side of the multiplexing circuit 21. The room master unit DQ1 includes a multiplexing circuit 28 (uplink audio signal, downlink audio signal, audio control signal),
9. The output side of the multiplexing circuit 28, which is composed of the control signal circuit 30 and is connected to the communication line L4, is connected to the communication circuit 29 and the control signal circuit 30, respectively, and the output side of the control signal circuit 30 is connected to the communication circuit 29. It is connected to the control side of the power supply 27 of the living room television monitor BQ1. The video controller PQ1 is a video signal switching circuit 3
1. Multiplexing circuit 32 (power supply to collective entrance, video signal, camera selection control signal, pan / tilt control signal), FM amplifier circuit 33, multiplexing circuit 34 (power supply to living room TV monitor, video signal), power supplies 35, 36 , Distribution circuit 37, separation circuit 3
8, 39, 40 (camera selection control signal, pan / tilt control signal), the video signal switching side of the video signal switching circuit 31 to which the video transmission line L1 is connected is the input side of the multiplexing circuit 32 to which the power supply 35 is connected. The output side of the multiplexing circuit 32 is connected via an FM amplifier circuit 33 to the input side of a multiplexing circuit 34 to which a power supply 36 is connected. The output side of the multiplexing circuit 34 is connected to the distribution circuit 37, and the distribution output side of the distribution circuit 37 is connected to the video distribution line L2. The respective video distribution lines L2 are connected to the separation circuits 38, 39, 40 and are connected to the separation circuits 38, 39, 40.
Is connected to the multiplexing circuit 32. The call controller VQ1 is provided with a separation circuit 41 (call control signal, uplink voice signal,
Downstream audio signal), control signal conversion circuit 42 (conversion output is video signal switching control signal and communication control signal), transmission amplifier circuit 43, reception amplification circuit 44, multiplexing circuit 45 (communication control signal, uplink audio signal) , A downstream audio signal), and the separation circuit 41 to which the audio transmission line L3 is connected is connected to the control signal conversion circuit 42. The control signal side of the control signal conversion circuit 42 for switching the video signal is connected to the video controller PQ1. It is connected to the control side of the provided video signal switching circuit 31. The communication control signal side of the control signal conversion circuit 42 is connected to the multiplexing circuit 45, and the separation circuit 41 and the multiplexing circuit 4
5, a transmission amplification circuit 43 on the downstream audio signal side and a reception amplification circuit 44 on the upstream audio signal side are connected. The multiplexing circuit 45 is connected to the multiplexing circuit 28 provided in the room parent device DQ1 via a communication line L4. still,
The call distribution line L4 is paired with the video distribution line L2. In such a television intercom system for a collective housing, in a state where the camera selection switch SW1 provided on the room television monitor BQ1 is not operated, for example, a call switch K1 provided on the collective entrance machine EQ1 is pressed, and When the machine DQ1 is called, the calling signal is separated by the separation circuit 41 of the communication controller VQ1 and sent to the control signal conversion circuit 42, as in the conventional case. Control signal conversion circuit 4
2 converts the input call signal into a video signal switching control signal and a speech control signal, the video signal switching control signal to a video signal switching circuit 31 provided in the video controller PQ1, and the speech control signal to The signals are sent to the multiplexing circuits 45, respectively. The control signal for video signal switching is a video controller PQ
When sent to the control side of the video signal switching circuit 31 provided in 1, the collective entrance machine EQ1 and the video controller PQ1 are connected. When the entrance hall EQ1 and the video controller PQ1 are connected, power is supplied from the power supply 35 superimposed on the multiplex circuit 32,
Power is transmitted to the power source 7 via the multiplexing circuit 1 provided on the built-in television camera CQ1 via the movable contact and the normally closed contact of the switch 14 provided on the collective entrance machine EQ1 via the video transmission line L1, and The circuit 2 becomes active. As a result, the video signal generated by the CCD camera 3 via the multiplexing circuit 1 is transmitted to the video transmission line L 1 via the FM modulation circuit 4, the FM amplification circuit 5 and the multiplexing circuit 1. The video signal transmitted to the video transmission line L1 is transmitted from the video signal switching circuit 31 provided in the video controller PQ1 to the multiplexing circuit 32, the FM amplifier circuit 33, and the multiplexing circuit. In this multiplexing circuit 34, a power supply for a room television monitor by a power supply 36 is superimposed. The video signal input to the multiplexing circuit 34 is transmitted to the multiplexing circuit 21 provided in the in-room television monitor BQ1 through the video distribution line L2 by the distribution operation of the distribution circuit 37. The call control signal input to the multiplexing circuit 45 via the control signal conversion circuit 42 is transmitted to the multiplexing circuit 28 of the parent device DQ1 via the call distribution line L4. Multiplexing circuit 28 provided in living room master unit DQ1
Is transmitted to the control signal circuit 30, and the communication circuit 29 operates under the control of the control signal circuit 30. As a result, an upstream voice signal and a downstream voice signal between the communication circuit 29 and the communication circuit 8 of the collective entrance machine EQ1 are transmitted and received via the communication controller VQ1. At the same time, when the control signal circuit 30 detects the call control signal, it activates the power supply 27 of the room television monitor BQ1. When the power supply 27 is activated, the multiplexing circuit 21 connects the superimposed power supply to the video circuit 22 via the power supply 27, and activates the video circuit 22. Thus, the multiplexing circuit 2
The video signal multiplexed into 1 is sent to the television monitor 25 via the FM demodulation circuit 23 and the video signal amplification circuit 24. At this time, when the pan / tilt switch SW2 is operated, a pan / tilt signal is generated (actual pan / tilt switch S
W2 has a structure capable of outputting pan-tilt signals corresponding to up, down, left, and right). The control signal modulation circuit 26 outputs the pan-tilt signal,
The signal is sent to the control signal demodulation circuit 6 through the multiplexing circuit 21, the separation circuit 38 of the video controller PQ1, the multiplexing circuit 32, the video signal switching circuit 31, the switching device 14 of the collective entrance unit EQ1, the multiplexing circuit 1, and the CCD camera 3 Control. When the camera switch SW1 is operated,
The camera selection control signal is sent to the control signal modulation circuit 26, and the modulated camera selection control signal is sent to the multiplexing circuit 21. The multiplexing circuit 21 sends the input camera selection control signal to the separation circuit 38 provided in the video controller PQ1 via the video distribution line L2. The separation circuit 38 is a multiplexing circuit 2
Only the camera selection control signal is extracted from the signal multiplexed in 1 and sent to the multiplexing circuit 32. The multiplexing circuit 32 sends the multiplexed camera selection control signal to the collective entrance machine EQ1 via the video signal switching circuit 31 and the video transmission line L1. The separation circuit 12 provided in the entrance hall EQ1 extracts only the camera selection control signal from the signal multiplexed by the multiplexing circuit 32 and outputs it to the control signal demodulation circuit 13. The control signal demodulation circuit 13 demodulates the input camera selection control signal and sends it to the control side of the switch 14 to operate the switch 14. When the switch 14 operates, the movable contact and the normally open contact are closed, and the external television camera CQ2 is connected to the video transmission line L1. Since the external television camera CQ2 and the built-in television camera CQ1 are configured by the same circuit, the description of the operation of the external television camera CQ2 is omitted. When the camera switch SW1 is operated again, the switch 14 is restored, the movable contact and the normally closed contact are closed, and the built-in TV camera CQ is closed.
Switched to 1. The plurality of cameras in the above embodiment is not limited to two. As is apparent from the above description, according to the television intercom apparatus for a multi-family housing of the present invention, a plurality of switchable cameras are provided in the multi-family entrance machine, so that the appearance of the whole multi-family entrance can be seen. Can be surely grasped.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a base unit showing one embodiment of a television intercom apparatus for a multi-family residence according to the present invention. FIG. 2 is a block diagram of a conventional television intercom apparatus for a multi-family house. [Explanation of Reference Codes] 12 Separation circuit 13 Control signal demodulation circuit (demodulation circuit) 14 Switcher 21 Multiplex circuit 25 ... TV monitor 26 ... Control signal modulation circuit 32 ... Multiplexers 38, 39, 40 ... Separation circuits EQ1, EQ2, EQ3 ... Collective entrance machine CQ1 Built-in TV camera CQ2 External TV camera BQ1 Living room TV monitor SW1 Camera changeover switch (changeover switch) PQ1 ..... Video controller L1 ... Video transmission line L2 ... Video wiring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP 62-7288 (JP, A) JP 4-58689 (JP, A) JP 6-34386 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) H04N 7/18

Claims (1)

(57) [Claims 1] A collective entrance machine (E) provided with a built-in television camera (CQ1) provided at the collective entrance to image a visitor.
Q1, EQ2, EQ3) are connected to a video controller (PQ1) via a video transmission line (L1), and the video controller is distributed and connected to each room television monitor (BQ1) via a video distribution line (L2). And a television intercom device for a multi-family residence that outputs a video signal captured from the television camera to the television monitor (25) of the living room television monitor from the video controller. An external television camera (CQ2) for monitoring the periphery of the room, the living room television monitor includes a changeover switch (SW1) for selecting one of the built-in television camera and the externally mounted television camera, and the changeover switch Is pressed, a camera selection control signal is input, and a control signal modulation circuit (26) that outputs a modulated camera selection control signal, and the video that transmits the video signal Multiplexing circuitry for sending a camera selection control signal modulated is superimposed on the wiring (21),
Separation circuit (38, 39, 40) for separating the camera selection control signal from a signal superimposed on the video distribution line
A multiplexing circuit (32) for transmitting a camera selection control signal superimposed and separated on the video transmission line for transmitting the video signal to the video transmission line, and a signal transmitted via the video transmission line A separation circuit (12) for separating the camera selection control signal from the camera, and a demodulation circuit (13) for demodulating the camera selection control signal obtained by the separation by the separation circuit.
And a switch (14) for switching between the built-in TV camera and the external TV camera in accordance with the demodulated camera selection control signal and connecting to the video transmission line. TV intercom device.