JP3254353B2 - TV intercom equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television intercom apparatus, and more particularly to a television intercom apparatus capable of performing an auto scan function and a monitor function using a single switch.

[0002]

2. Description of the Related Art Conventionally, a television intercom apparatus as shown in FIG. 2 has been proposed. In this television intercom apparatus, a plurality of television camera slave units 53a, 53
, 53c are connected to the TV intercom master unit 51 and the TV monitor unit 54 via the adapter 52, and the TV intercom master unit 51, the adapter 52, and the TV monitor unit 54 are connected indoors to the TV camera slave units 53a, 53b, , 53c are installed outside the room.

[0003] TV intercom master unit 51 and adapter 5
The automatic scan switching means (CPU) 61 is connected via a channel selection / calling circuit 65, and the television intercom master unit 51 includes a plurality of television camera slave units 53a, 53b,.
Channel selection buttons 51a, 51b,.
1c.

An automatic scan switching means (CPU) 61 of an adapter 52 and a plurality of TV camera slave units 53a, 53
, 53c are connected via a call detection circuit 64 and a signal line switching circuit 55, respectively, and are also connected via a camera power supply circuit 57 and a signal line switching circuit 55.

[0005] The automatic scan switching means (CPU) 61 and the television monitor unit 54 are connected via a monitor unit control circuit 58. The monitor speaker 60 is
The monitor audio amplifier 59 and the monitor audio control circuit 56 are connected to an automatic scan switching means (CPU) 61.

Further, the automatic scan switching means (CP
U) 61 includes a plurality of TV camera slave units 53a, 53b,
, 53c are connected to the TV monitor unit 54, and a monitor switch 62 is connected to switch the corresponding TV camera slave unit to the TV monitor unit 54 when a certain channel selection button is operated. .

The signal line switching circuit 55 is connected to the television intercom master unit 51 via a television monitor unit 54, a monitor audio control circuit 56, and a communication circuit 66.

[0008] In the television intercom apparatus configured as described above, one TV camera slave unit 5 from the room
When it is desired to monitor the vicinity where 3a is installed, after pressing the monitor switch 62 provided on the adapter 52, the channel selection button 51a corresponding to the TV camera slave unit 53a to be monitored by the TV intercom master unit 51 is pressed. The automatic scan switching means (CPU) 61 controls the camera power supply circuit 57 to supply power to the television camera subunit 53a connected via the signal line switching circuit 55 to operate it. At the same time, the automatic scan switching means (CP
U) 61 controls the television monitor unit control circuit 58 and the monitor audio control circuit 56 to operate the television monitor unit 54 and the monitor audio amplifier 59. When the TV camera slave unit 53a, the TV monitor unit 54, and the monitor audio amplifier 59 operate, the video signal and the audio signal generated by the connected TV camera slave unit 53a are transmitted to the TV monitor unit 54 via the signal line switching circuit 55. And a monitor speaker 60. At this time, when the channel selection button 51b corresponding to an arbitrary TV camera slave unit 53b of the TV intercom master unit 51 is pressed, the auto scan switching unit (CPU) 61 It is determined whether the TV camera slave unit has been selected, and the signal line switching circuit 55 is controlled. The signal line switching circuit 55 connects the television camera slave unit 53b selected under the control of the automatic scan switching means (CPU) 61 and the monitor unit 54. When the TV camera slave 53b and the monitor unit 54 are connected, the camera power supply circuit 57 supplies power to the TV camera slave 53b. When the television camera slave unit 53b and the monitor unit 54 are connected and the power is supplied to the television camera slave unit 53b, the video signal and the audio signal generated by the arbitrary TV camera slave unit 53b are transmitted to the signal line switching circuit 5.
5, a monitor unit 54 and a monitor speaker 6
Monitored at 0.

[0009] A plurality of TV camera slave units 53a,
When it is desired to sequentially monitor the surroundings where 53b,..., 53c are installed, when the auto scan switch 63 of the adapter 52 is pressed, the auto scan switching means (CPU) 61 causes the camera power supply circuit 57 and the signal line switching. The circuit 55, the television monitor unit control circuit 58 and the monitor audio control circuit 56 are controlled, and the signal line switching circuit 5
5 while sequentially switching a plurality of TV camera slave units 53.
Power can be supplied to a, 53b,..., 53c, and the video and audio of the camera switched by the monitor unit 54 and the monitor speaker 60 can be monitored.

[0010]

In the television intercom apparatus configured as described above, a switch is provided for each function. Therefore, when a large number of functions are added, the number of switches increases, the operation becomes complicated, and the appearance is improved. With more switches, it is difficult to tell which switch is what switch. Also, when attaching the switch to the intercom, the switch board on which the switch and its peripheral circuits are mounted is attached to the back of the case with screws, so that the height and position of the components placed on other boards are limited by this switch board. There are difficulties.

The present invention has been made in order to solve the above-mentioned drawbacks. One switch can be used to execute an auto scan function and a monitor function, simplifying operation and appearance, and arranging parts arrangement and board design. It is an object of the present invention to provide a television intercom device that can increase a degree of freedom.

[0012]

In order to achieve this object, a television intercom apparatus according to the present invention connects a plurality of television camera subunits to a television intercom master unit and a television monitor unit via an adapter, and provides a television interphone master unit. In the television intercom apparatus having a channel selection button for selecting one of a plurality of television camera slaves, the adapter is configured to select one channel after an auto scan / monitor switch is pressed within a predetermined time. A signal line switching circuit for switching a corresponding television camera slave to a television monitor unit when a button is operated; and a plurality of television camera slaves for driving the signal line switching circuit when an auto scan monitor switch is pressed for a predetermined time or more. Automatic scan switching means for sequentially switching the television set to a television monitor unit. .

As described above, the auto scan function and the monitor function can be executed by using one switch, and the operation and appearance are simplified.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a television intercom apparatus according to the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1, in the television intercom apparatus of the present invention, a television intercom master 1, an adapter 2, and a television monitor unit 4 are placed indoors, and a plurality of television camera slaves 3a, 3b,. Has been installed,
The plurality of TV camera slaves 3a, 3b,..., 3c are connected to the TV intercom master unit 1 and the TV monitor unit 4 via the adapter 2.

The TV intercom master unit 1 has channel selection buttons 1a, 1b,..., 1c corresponding to a plurality of TV camera slave units 3a, 3b,.

After the auto-scan / monitor switch 12 provided on the adapter 2 is pressed for less than a predetermined time, for example, when one channel selection button 1a is operated, the corresponding television camera slave unit 3a is turned on. A signal line switching circuit 5 for switching to the television monitor unit 4 and a plurality of television camera slaves 3a, 3b,. Automatic scan switching means (CPU) 11 for sequentially switching to the television monitor unit 4
, 3c for notifying the calling of the TV intercom master unit 1 and the tuning of the TV camera slave units 3a, 3b,..., 3c, and detecting the call from the TV camera slave units 3a, 3b,. , A camera power supply circuit 7 for supplying power to the TV camera slave units 3a, 3b,..., 3c, a TV monitor unit control circuit 8 for controlling the TV monitor unit 4, and a monitor speaker 10. A monitor audio amplifier 9, a monitor audio control circuit 6 for controlling the monitor audio amplifier 9, and a communication circuit 16 are provided.

The automatic scan switching means (C) of the adapter 2
PU) 11 is connected to the television intercom master unit 1 via a channel selection / calling circuit 15, and is connected to the television monitor unit 4 and the monitor unit control circuit 8. Also,
The automatic scan switching means (CPU) 11 is connected to the signal line switching circuit 5 via the television camera slaves 3a, 3b,..., 3c, the call detection circuit 14, the signal line switching circuit 5, and the camera power supply circuit 7. I have. The monitor speaker 10 is connected via a monitor audio amplifier 9 and a monitor audio control circuit 6. Further, the automatic scan switching means (CPU) 11 is connected to the automatic scan / monitor switch 12.

The signal line switching circuit 5 is connected to the television monitor unit 4, the monitor audio control circuit 6, and the communication circuit 16, and is also connected to the television intercom master unit 1 via the communication circuit 16.

In the television intercom apparatus of the present invention having the above-described configuration, when it is desired to monitor the vicinity of the room where the TV camera slave unit 3a is installed from the room, the auto scan monitor switch 1 provided on the adapter 2 is provided.
2 is pressed for less than 2 seconds, and then the channel selection button 1a corresponding to the television camera slave unit 3a provided in the television intercom master unit 1 is depressed.
Reference numeral 11 controls the camera power supply circuit 7, supplies power to the TV camera slave unit 3a connected via the signal line switching circuit 5, and operates the TV camera slave unit 3a. At the same time, the automatic scan switching means (CPU) 11 controls the TV monitor unit control circuit 8 and the monitor audio control circuit 6
To operate the TV monitor unit 4 and the monitor audio amplifier 9. When the television camera subunit 3a, the monitor unit 4 and the monitor audio amplifier 9 operate, the video signal and the audio signal generated by the connected television camera subunit 3a are transmitted via the signal line switching circuit 5 to the television monitor unit 4 and Monitored by the monitor speaker 10. At this time, when a channel selection button 1b corresponding to an arbitrary TV camera slave unit 3b of the TV intercom master unit 1 is pressed, the auto scan switching means (CPU) 11 It knows whether or not the TV camera slave unit has been selected, and controls the signal line switching circuit 5. The signal line switching circuit 5 connects the television camera slave unit 3b selected by the control of the automatic scan switching means (CPU) 11 to the television monitor unit 4. When the TV camera slave 3b and the monitor unit 4 are connected, the camera power supply circuit 7 supplies power to the TV camera slave 3b. When the TV camera slave 3b and the TV monitor unit 4 are connected and power is supplied to the TV camera slave 3b, a video signal and an audio signal generated by an arbitrary TV camera slave 3b are converted to a signal line switching circuit 5 Through the TV monitor unit 4 and the monitor speaker 10.

From the room, the TV camera slaves 3a, 3b,.
In the case where it is desired to repeatedly monitor the vicinity where the 3c is installed (auto scan), if the auto scan monitor switch 12 of the adapter 2 is pressed for 2 seconds or more, the auto scan switching means (CPU) 11 turns on the camera power supply. Controlling a circuit 7, a signal line switching circuit 5, a television monitor unit control circuit 8, and a monitor audio control circuit 6,
Power is supplied to the TV camera slaves 3a, 3b,..., 3c while repeatedly switching the signal line switching circuit 5 in order.
The video and audio of the camera switched by the television monitor unit 4 and the monitor speaker 10 can be monitored.

In the above embodiment, when the auto scan / monitor switch of the adapter is pressed for 2 seconds or more, the auto scan function operates, and when the adapter is pressed for less than 2 seconds, the monitor function operates. However, the auto scan / monitor switch is pressed. The time is not limited to 2 seconds. The same effect is also obtained when the TV intercom master unit, the adapter, and the TV monitor unit of the TV intercom apparatus are integrated.

[0023]

As is apparent from the above description, according to the television intercom apparatus of the present invention, the auto scan function and the monitor function can be executed by using one switch, the operation and appearance are simplified, and the design of the board is free. The degree can be increased.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a television intercom apparatus according to the present invention.

FIG. 2 is a block diagram of a conventional television intercom apparatus.

[Explanation of symbols]

 1 ... TV intercom master unit 1a, 1b, ... 1c ... Channel selection button 2 ... Adapter 3a, 3b, ... 3c ... TV camera Remote unit 4 ... TV monitor unit 5 ... Signal line switching circuit 11 ... Auto scan switching means (CPU) 12 ... Auto scan monitor switch

Claims (1)

(57) [Claims] A plurality of television camera slaves (3a, 3b,...,
3c) is connected to the TV intercom master unit (1) and the TV monitor unit (4) via the adapter (2), and the TV interphone master unit selects one of the plurality of TV camera slave units. Tuning buttons (1a, 1b,
..., the television interphone apparatus have a 1c), the adapter, the auto scan monitor switch (1
(2) a signal line switching circuit (5) for switching a corresponding TV camera slave to the TV monitor unit when one channel selection button is operated after the button is pressed within a predetermined time, and the auto scan monitor switch When the button is pressed for a predetermined time or more, the automatic scan switching means (1) which drives the signal line switching circuit to sequentially switch the plurality of television camera slave units to the television monitor unit.
(1) A television intercom apparatus comprising: