JPH05284502A - Panning and tilting visual doorphone device - Google Patents

Abstract

PURPOSE:To freely select the combination with various machine types dependent upon the presence/absence of a circuit which transmits and receives a panning and tilting camera return signal by eliminating this circuit. CONSTITUTION:A panning and tilting visual doorphone slave machine 11 is provided with a power supply start detecting circuit 12. When the time of power supply from a panning and tilting visual doorphone master machine 1 is detected by the power supply start detecting circuit, a panning and tilting camera attitude return circuit 19a is operated to return the attitude of a panning and tilting camera to a determined position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pan / tilt television door intercom apparatus, and more particularly to a pan / tilt television intercom apparatus without a circuit for transmitting / receiving a pan / tilt camera return signal to / from a slave unit and a master unit.

[0002]

2. Description of the Related Art A conventional pan / tilt television door intercom apparatus, as shown in FIG.
The microphone 38b, the speaker 38a, the call button 39, and the pan / tilt TV doorphone handset 36 provided with the imaging window 37, and the transmission line L ₂ connected to the pan / tilt TV doorphone handset 36, the handset 32, the TV monitor 34, and the function button. 33, a pan / tilt television door phone master unit 31 having a pan / tilt operation device 35.

When the pan / tilt operation device 35 of the base unit 31 of the pan / tilt TV doorphone is operated, the camera eye of the slave unit 36 of the pan / tilt TV doorphone is swung to the left and right, so-called pan (pa).
n) and upward and downward tilts are operated to search the position of the visitor and image it on the TV camera. Normal,
The imaging window 37 is shielded by a smoke-shaped screen so that the internal camera eye cannot be seen, but the visitor stands upright in front of the imaging window 37 without paying attention to the camera eye and calls the call button 39. To operate. When the handset 32 is off-hooked by the pan-tilt TV doorphone master unit 31, power is supplied to the pan-tilt TV doorphone slave unit 36, a call path is formed with the pan-tilt TV doorphone slave unit 36, and the image of the visitor facing the camera eye is displayed. It can be monitored on the television monitor 34. However, since the viewpoint direction of the camera eye is not set to a predetermined position, the pan / tilt return signal f _P
Must be sent to and received from each other. When the pan / tilt return signal f _P is transmitted / received, the normal pan / tilt TV doorphone handset 3
Although it is preferable that the power is supplied to 6, the pan / tilt return signal f _P may be transmitted at the end of the call when the handset 32 is on-hook by the pan / tilt TV intercom base unit 31. In this case, the power-off time must be delayed a little.
In either case, it is necessary to freely pan and tilt the camera eye by following the operation of the pan / tilt operation device 35 while the communication path is formed.

In the transmission / reception system of the pan / tilt return signal f _P as described above, a circuit for transmitting / receiving the pan / tilt return signal f _P must be provided for the pan / tilt TV doorphone master 31 and the pan / tilt TV intercom slave 36 without fail. _{If the} pan-tilt television door phone master unit 31 that does not have the function of sending _P is provided, there is a drawback that the pan-tilt operation device 35 must be operated each time.

[0005]

[Objective] The present invention has been made in view of the above-mentioned difficulties.
By providing a power supply start detection circuit on the pan / tilt TV doorphone handset, the circuit for sending / receiving the pan / tilt camera return signal is deleted, and the combination with various models depending on the presence / absence of the circuit for sending / receiving the pan / tilt camera return signal can be freely selected An object is to provide a TV intercom device.

[0006]

A TV intercom device according to the present invention includes a pan-tilt TV doorphone master unit capable of freely pan-tilting the TV camera posture of a pan-tilt TV doorphone slave unit, and a pan-tilt TV doorphone master unit to a pan-tilt TV doorphone slave unit. The power supply start detection circuit that detects that power is supplied, and the position where the pan-tilt camera is positioned when the power supply start detection circuit detects that power has been supplied from the pan-tilt TV doorphone master unit. And a pan-tilt camera posture return circuit for returning to the.

[0007]

[Function] A power supply start detection circuit is provided in the pan / tilt television intercom slave. When the power supply start detection circuit detects the point in time when power is supplied from the pan-tilt television doorphone master unit, the pan-tilt camera posture restoration circuit operates to restore the posture of the pan-tilt camera to the predetermined position.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pan / tilt television door intercom apparatus according to the present invention will be described in detail below with reference to FIGS. As shown in FIG. 1, the pan-tilt television door intercom apparatus according to the present invention includes a microphone 14b, a speaker 14a, a call button 20a,
A pan / tilt TV intercom slave 11 equipped with an imaging window 17a, and a transmission line L ₁ connected to the pan tilt TV intercom slave 11, and a pan / tilt equipped with a handset 4, a TV monitor 6, a function button 9a, and a pan / tilt controller 7a. It is composed of the TV intercom base unit 1.

As shown in FIG. 2, the pan / tilt TV intercom base unit 1 includes a call circuit 3 to which a handset 4 is connected, a pan / tilt slave interface 2, a video signal demodulation circuit 5 to which a TV monitor 6 is connected, and a pan / tilt controller. 7a is connected to the pan / tilt signal transmitter 7, a power supply circuit 8 for supplying power + B to each part of the circuit, and a pan / tilt master CPU 9 to which a function button 9a is connected.
The inside of the pan / tilt slave unit interface 2 connected to ₁ is the communication circuit 3 controlled by the pan / tilt master unit CPU 9.
The video signal demodulation circuit 5 and the pan / tilt signal transmitter 7 are respectively connected. In addition, the power supply circuit 8 supplies power to the pan-tilt TV intercom slave 11 via the pan-tilt slave device interface 2, the terminal T ₁ and the transmission line L ₁ under the control of the pan-tilt master device CPU 9 according to on-hook and off-hook of the handset 4. Supply + B.

The pan / tilt television doorphone handset 11 includes a call circuit 14 to which a video signal modulation circuit 13, a microphone 14b and a speaker 14a are connected, a pan / tilt signal circuit 15, a pan / tilt control circuit 16 for controlling pan / tilt motors 16a and 16b, and a pan / tilt photographing machine. Element 17, power supply circuit 1
8, a power supply start detection circuit 19, a pan / tilt camera attitude return signal circuit 19a, a pan / tilt master unit interface 12, a call button 20a, and a pan / tilt slave unit CPU 20 to which a call signal transmission circuit 20b is connected, and the output side is connected to the terminal T ₂ . Connected pan / tilt master unit interface 12
The inside of is connected to the video signal modulation circuit 13, the call circuit 14, the pan / tilt signal circuit 15, and the call signal transmission circuit 20b, respectively. A power supply circuit 18 is supplied with power via the terminal T ₂ and the pan / tilt master unit interface 12.
The output side of is connected to the pan / tilt signal circuit 15 via the power supply start detection circuit 19 and the pan / tilt camera attitude return signal circuit. The video signal modulation circuit 13 and the call circuit 1
4, pan / tilt control circuit 16, call signal transmission circuit 20b
The control side of is connected to the pan / tilt slave CPU 20.

When the handset 4 is off-hooked by the base unit 1 of the pan-tilt TV doorphone device of the upper unit configuration, when the handset 4 is off-hook, the power supply + B is supplied from the power circuit 8 via the pan-tilt slave device interface 2 and the terminal T _1. Is supplied to the machine 11. In the pan / tilt TV intercom slave 11, the power + B is supplied via the terminal T ₂ and the pan / tilt master interface 12. When the power supply start detection circuit 19 detects the supply of the power supply + B, the pan / tilt camera posture restoration signal circuit 19a operates. When the pan-tilt camera posture return signal circuit 19a is activated, the posture of the pan-tilt mechanical element 17 is restored to the position facing the visitor SUB. After that, the pan / tilt TV intercom base unit 1 hooks the handset 4 on the hook and can freely pan and tilt by following the operation of the pan / tilt operation device 7a until the call ends.

[0012]

In the pan-tilt television intercom apparatus according to the present invention, the circuit for transmitting and receiving the pan-tilt camera return signal is eliminated by providing the pan-tilt television intercom slave with the power supply start detection circuit, and the circuit for transmitting and receiving the pan-tilt camera return signal. There is an effect that the combination with various models can be freely selected depending on the presence or absence of.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a pan-tilt television intercom system according to the present invention.

FIG. 2 is a block diagram showing an embodiment of a pan-tilt television intercom system according to the present invention.

FIG. 3 is a configuration diagram of a conventional pan-tilt television door phone device.

[Explanation of symbols]

1- ・ Pan-tilt TV door phone master unit 11- ・ Pan-tilt TV door phone slave unit 19- ・ Power supply start detection circuit (power supply start detection means) 19a Pan-tilt camera posture restoration signal circuit (pan-tilt camera posture restoration means)

Claims (1)

[Claims] 1. A pan-tilt TV doorphone master unit capable of freely pan-tilting the TV camera posture of the pan-tilt TV doorphone slave unit, and a power supply for detecting that power is supplied from the pan-tilt TV doorphone master unit to the pan-tilt TV doorphone slave unit. Start-up detecting means and pan-tilt camera attitude returning means for returning the attitude of the pan-tilt camera to a predetermined position when it is detected by the power supply start-up detecting means that the power supply from the pan-tilt TV doorphone master unit is detected. A pan / tilt TV intercom device characterized by being provided.