JP2000115386A - Intercom system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intercom system with which a video signal is transmitted to a cordless handset and the cordless handset transmits a control data signal. SOLUTION: A cordless handset of the intercom system is provide with an ultrasonic wave reception circuit 302 that receives an ultrasonic wave signal from an interphone master set, a separation circuit 303 that separates a video signal from the received ultrasonic wave signal, a monitor unit 306 that outputs the separated video signal on its screen, a multiplexer circuit 316 that multiplexes a voice signal from a handset microphone on other data signals, a radio wave transmission circuit 317 that transmits the multiplexed voice signal to the interphone master set, an electric lock unlocking button 312, that is operated by the user confirming a visitor displayed on the monitor unit 306 and transmits a unlock control data signal 314 to unlock an electric lock unit 208, and a motor controller 313 that transmits a panning/tilting control data signal 315 to drive a monitor unit 112 thereby applying panning/tilting control to a camera unit 103.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door phone device, and more particularly, to a system for transmitting a video signal to a cordless handset.
The present invention relates to an intercom apparatus capable of transmitting a control data signal from a cordless handset.

[0002]

2. Description of the Related Art Conventionally, a circuit configuration as shown in FIG. 2 has been proposed as an intercom apparatus. In the figure,
The voice of the visitor at the entrance is converted into an electric signal by the slave unit microphone 502 of the door phone slave unit 501 and is converted into a hybrid circuit 503.
Are converted to 4-wire and 2-wire, and input to the intercom master unit 601 via the transmission line 110. Intercom master unit 601
Is converted by the hybrid circuit 602 into two lines and four lines, and is FM-modulated by the FM radio wave transmission circuit 603.
It is transmitted as a radio wave 605. The cordless handset 701 receives the FM radio wave
An electric sound signal is returned to the electric wave receiving circuit 702, and the sound of the front door inputted through the speaker amplifier 703 is transmitted from the speaker 704. Cordless handset 701
The audio signal picked up by the microphone 705 is a microphone amplifier 706
The signal is FM-modulated by an FM radio wave transmission circuit 707 input through the antenna and transmitted as an FM radio wave 708 from a transmission / reception antenna. The intercom master unit 601 receives the FM radio wave 708 by a transmission / reception antenna, returns the electric voice signal to the FM radio wave reception circuit 604, inputs the electric voice signal to the intercom slave device 501 via the hybrid circuit 602 and the transmission line 110, and receives the signal via the hybrid circuit 503. A voice is transmitted from the child device speaker 504.

[0003]

In this intercom apparatus, a visitor at the entrance receives a call by transmitting and receiving a voice signal using a sub-unit microphone and a sub-unit speaker of the intercom sub-unit and a microphone and a speaker of a cordless handset. Can be. In this intercom apparatus, a visitor at the entrance is imaged by a camera unit provided in the intercom slave unit, a video signal is transmitted, and an image is displayed on a monitor unit of the intercom master unit, and an electric unlocking data signal is transmitted from the intercom master unit. It is also possible to send a pan / tilt control data signal of the camera unit or the camera unit to unlock the electric lock unit provided at the entrance and control the pan / tilt of the camera unit provided at the door phone slave unit. However, in such a doorphone device, a video signal captured by a camera unit of the doorphone slave unit is transmitted to a cordless handset, or a control data signal such as an electric lock / unlock data signal or a pan / tilt control data signal of the camera unit is transmitted. There was a drawback that the cordless handset could not transmit to the electric lock unit or camera unit.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and has as its object to provide an intercom apparatus capable of transmitting a video signal to a cordless handset and transmitting a control data signal from the cordless handset.

[0005]

In order to achieve this object, a door phone apparatus according to the present invention captures a visitor at an entrance with a camera unit of a door phone slave unit, transmits a video signal, and transmits a video signal to the base unit monitor unit of the base unit of the intercom. , And the resident communicates with the resident by transmitting and receiving audio signals using the handset microphone and handset speaker of the cordless handset and the handset microphone and handset speaker of the intercom handset. The intercom slave unit includes a slave unit multiplexing circuit that multiplexes a video signal. The intercom master unit separates an audio signal and a video signal from the intercom slave unit, and outputs a separated video signal to the master monitor unit. A video / audio multiplexing circuit to be multiplexed, a base unit ultrasonic transmission circuit for outputting an ultrasonic signal modulated by a multiplexed video signal and an audio signal, and a base unit radio wave for receiving a radio signal transmitted from a cordless handset A reception circuit; and a second parent device separation circuit that separates the audio signal from the received radio wave signal and transmits the separated audio signal to the intercom slave unit.
The cordless handset includes a handset ultrasonic receiving circuit that receives an ultrasonic signal transmitted from the intercom master unit, a handset separating circuit that separates a video signal from the received ultrasonic signal, and outputs the separated video signal. A handset monitor unit, a handset multiplexing circuit for multiplexing audio signals from a handset microphone,
And a handset FM radio wave transmitting circuit for transmitting the multiplexed audio signal to the intercom master unit. Further, the cordless handset visually recognizes a visitor displayed on the handset monitor unit, sends an unlock control data signal to the handset multiplexing circuit, and transmits the handset FM radio wave transmission circuit, the base unit FM radio wave reception circuit, and the second An electric lock release button is provided for unlocking the electric lock unit via the parent device separation circuit. The intercom slave unit includes a motor unit that performs pan / tilt control of the camera unit using a pan / tilt control data signal transmitted from the cordless handset, and a slave unit separation circuit that separates the pan / tilt control data signal. The cordless handset visually recognizes visitors displayed on the handset monitor unit,
The pan / tilt control data signal is transmitted to the handset multiplexing circuit, and the motor unit is driven via the handset FM radio wave transmission circuit, the base unit FM radio wave reception circuit, the second base unit separation circuit, and the slave unit separation circuit, and the camera unit And a motor controller for pan / tilt control of the motor. In this intercom apparatus, when a cordless handset is called from the intercom slave by a visitor at the entrance, the entrance visitor multiplexes the video signal taken by the camera unit of the intercom and transmits the multiplexed signal to the slave unit multiplexing circuit to transmit the interphone. Entered in the parent machine. In the intercom master unit, the video signal is separated by the first base unit separation circuit, and the separated video signal is output by the base unit monitor unit. The separated video signal is multiplexed by a video / audio multiplexing circuit, and transmitted from the master unit ultrasonic transmission circuit to the cordless handset as an ultrasonic signal radio wave. In the cordless handset, the transmitted ultrasonic signal of the video signal is received by the handset ultrasonic receiving circuit, the video signal is separated from the received ultrasonic signal by the handset separating circuit, and the separated video signal is processed by the handset monitor unit. Display images. On the other hand, the voice of the visitor at the entrance is converted into a voice signal by the slave unit microphone of the door phone slave unit and input to the intercom master unit. In the intercom master unit, the audio signal is separated by the first base unit separation circuit, and the separated audio signal is multiplexed by the video / audio multiplexing circuit and transmitted from the base unit ultrasonic transmission circuit to the cordless handset as ultrasonic wave of the ultrasonic signal. Is done. In the cordless handset, the transmitted ultrasonic signal of the audio signal is received by the handset ultrasonic receiving circuit, the audio signal is separated from the received ultrasonic signal by the handset separating circuit, and the separated audio signal is emitted from the handset speaker. Sound. On the other hand, the sound of the cordless handset carrier, that is, the resident, is converted into an audio signal by the handset microphone of the cordless handset, multiplexed by the handset multiplexing circuit, and transmitted to the handset FM radio transmission circuit. The handset FM radio wave transmission circuit transmits the audio signal to the intercom master unit as a radio wave of the FM radio signal. In the intercom master unit, the audio signal transmitted by radio from the cordless handset is received by the master unit's FM radio wave receiving circuit, the audio signal is separated by the second master unit separation circuit, and the separated audio signal is transmitted to the door phone slave unit side. To be transmitted. The intercom slave unit emits the transmitted audio signal from the speaker of the slave unit. In this way, a visitor at the entrance is imaged by the camera unit of the intercom slave unit, a video signal is transmitted, and an image is displayed by the master unit monitor unit of the intercom master unit and the handset monitor unit of the cordless handset. By transmitting and receiving audio signals with the handset microphone and handset speaker of the cordless handset and the handset microphone and handset speaker of the cordless handset, it is possible to talk with the resident. Also, the cordless handset visually recognizes a visitor displayed on the handset monitor unit, operates an electric lock / unlock button, sends an unlock control data signal to the handset multiplex circuit, and outputs a handset FM radio wave transmission circuit, an interphone Base unit FM of base unit
The electric lock unit is unlocked by the unlock control data signal via the radio wave receiving circuit and the second master unit separation circuit. Further, the cordless handset visually recognizes a visitor displayed on the handset monitor unit, operates a motor controller to transmit a pan / tilt control data signal to a handset multiplex circuit, a handset FM radio wave transmission circuit, and an intercom master unit. The base unit FM radio wave receiving circuit drives the motor unit with the pan / tilt control data signal through the hybrid circuit as the pan / tilt control data signal from the second base unit separation circuit via the hybrid circuit and the door phone sub unit. To perform pan / tilt control of the camera unit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a door phone apparatus according to the present invention will be described below with reference to the drawings. In FIG. 1, the door phone apparatus of the present invention captures a visitor at the entrance with the camera unit 103 of the door phone handset 101, sends out a video signal 106, and outputs
Of the intercom sub-unit 101 and the sub-unit microphone 102 and the sub-unit speaker 1
14 and a handset microphone 309 and a handset speaker 308 of the cordless handset 301 transmit and receive audio signals 105, 113, 311 and 305 to enable communication with residents. The intercom slave unit 101 and the intercom master unit 201 are connected to the transmission
And the slave unit microphone 1 of the door phone slave unit 101
02 and the slave speaker 114 are connected to the hybrid circuit 10.
9 is connected to the transmission line 110. The intercom slave unit 101 includes a slave unit multiplexing circuit 118 connected to the transmission line 110 and multiplexing the video signal 106. The intercom master unit 201 receives the audio signal 1 from the intercom slave unit 101
05, the video signal 106 is separated, and the separated video signal 2
05 to the master unit monitor unit 207 and the transmission path 110
, A video / audio multiplexing circuit 209 for multiplexing the separated video signal 205 and audio signal 204, and an ultrasonic signal modulated with the multiplexed video signal and audio signal. Main unit ultrasonic transmission circuit 21 that outputs
0, a speaker 217 for converting an ultrasonic signal from the base unit ultrasonic transmission circuit 210 into an electric / ultrasonic wave and transmitting it as an ultrasonic wave f1, and a base unit FM for receiving the FM radio wave f2 transmitted from the cordless handset 301. Radio wave receiving circuit 2
12 and a second base unit separation circuit 213 that separates the audio signal 311 from the received FM radio signal and transmits the separated audio signal to the intercom slave unit 101 side. The second master unit separation circuit 213 of the intercom master unit 201 is connected to the transmission line 110 via the hybrid circuit 202. The cordless handset 301 converts the ultrasonic signal transmitted from the intercom master unit 201 as the ultrasonic wave f1 into an ultrasonic wave / electrical signal and transmits the ultrasonic signal.
19, a handset ultrasonic receiving circuit 302 for receiving the transmitted ultrasonic signal, and a handset separating circuit 30 for separating the video signal 205 from the received ultrasonic signal.
3, a handset monitor unit 306 for outputting the separated video signal 304, and a handset microphone 309.
A handset multiplexing circuit 316 for multiplexing the audio signal 311 input from the microphone amplifier 310 via the microphone amplifier 310, and a handset FM radio wave transmission circuit 317 for transmitting the multiplexed audio signal 311 to the intercom master unit 201. An audio signal 305 is input to a handset speaker 308 of the cordless handset 301 via a speaker amplifier 307. Cordless handset 3
01, the visitor displayed on the handset monitor unit 306 is visually recognized, the unlock control data signal 314 is transmitted to the handset multiplexing circuit 316, the handset FM radio wave transmission circuit 317, the base unit FM radio wave reception circuit 212, 2
And an electric lock release button 312 for unlocking the electric lock unit 208 with the unlock control data signal 215 via the master unit separation circuit 213. The doorphone slave unit 101 is connected to the motor unit 112 that performs pan / tilt control with the pan / tilt control data signal 111 based on the pan / tilt control data signal 315 transmitted from the cordless handset 301, and the transmission line 110. A slave unit separation circuit 119 for separating the pan / tilt control data signal 111; Cordless handset 30
1 transmits a pan / tilt control data signal 315 to the handset multiplexing circuit 316 by visually recognizing the visitor displayed by the handset monitor unit 306, and outputs the handset FM radio wave transmission circuit 317 and the base unit FM radio wave reception circuit 21.
2. A motor controller 3 that drives the motor unit 112 with the pan / tilt control data signal 111 via the slave unit separation circuit 119 to control the pan / tilt of the camera unit 103
13 is provided. An electric lock key operation unit 104 for unlocking an electric lock unit 208 with an unlock control data signal 107 is connected to the slave unit multiplex circuit 118 of the door phone slave unit 101. In the intercom apparatus configured as described above, when a call is made to the cordless handset 301 from the intercom slave device 101 by the entrance visitor, the entrance visitor is imaged by the camera unit 103 of the intercom slave device 101 and outputs the video signal 106 to the child. Multiplexed by the machine multiplexing circuit 118,
Transmission via the transmission line 110 and intercom master unit 201
Is input to In the intercom master unit 201, the video signal 106 is separated by the first base unit separation circuit 203, and the separated video signal 205 is output by the base unit monitor unit 207. Further, the separated video signal 205 is multiplexed by a video / audio multiplexing circuit 209, and is subjected to electric / ultrasonic conversion by a speaker 217 from a base unit ultrasonic transmission circuit 210 and transmitted to a cordless handset 301 as ultrasonic wave f1 of an ultrasonic signal. You. In the cordless handset 301, the transmitted ultrasonic signal of the image signal 205 is ultrasonically / electrically converted by the ultrasonic microphone 319 and received by the handset ultrasonic receiving circuit 302. The signal 205 is separated by the handset separation circuit 303, and the separated video signal 304 is output by the handset monitor unit 306. On the other hand, the voice of the visitor at the entrance is input to the audio signal
The signal is converted by the hybrid circuit 109 into four lines and two lines and input to the intercom master unit 201 via the transmission line 110. In the intercom master unit 201, the audio signal 105 is separated by the first master unit separation circuit 203, and the separated audio signal 204 is multiplexed by the video / audio multiplexing circuit 209, and the separated audio signal The ultrasonic wave is converted and transmitted to the cordless handset 301 as an ultrasonic wave f1 of an ultrasonic signal. In the cordless handset 301, the transmitted ultrasonic signal of the audio signal 204 is ultrasonically / electrically converted by the ultrasonic microphone 319 and received by the handset ultrasonic receiving circuit 302. The signal 305 is separated by the handset separation circuit 303, and the separated audio signal 305 is passed through the speaker amplifier 307 to the handset speaker 3.
Sound is emitted from 08. On the other hand, the cordless handset 30
The voice of the first person, that is, the resident, is converted into an audio signal 311 by the handset microphone 309 of the cordless handset 301 and multiplexed with the audio signal 311 by the handset multiplexing circuit 316 input through the microphone amplifier 310, and the handset FM radio wave The signal is transmitted to the transmission circuit 317.
The handset FM radio wave transmission circuit 317 outputs an audio signal 311
As a radio wave f2 of the FM radio signal,
Send to 1. In the intercom master unit 201, the audio signal 311 transmitted by the radio wave f2 from the cordless handset 301 is received by the master unit FM radio wave reception circuit 212, and the audio signal 311 is separated by the second base unit separation circuit 213 and separated. The audio signal 214 is converted by the hybrid circuit 202 into four
The signal is converted into a two-wire signal and transmitted to the intercom slave device 101 via the transmission line 110. In the intercom slave unit 101, the transmitted audio signal 214 is converted into a two-line / four-line signal by the hybrid circuit 202, and the audio signal 113 is converted to the child unit speaker 114.
From the sound. In this way, a visitor at the entrance is imaged by the camera unit 103 of the door phone handset 101, a video signal 106 is sent out, and an image is displayed by the base unit monitor unit 207 of the intercom master unit 201 and the handset monitor unit 306 of the cordless handset 301. , The visitor receives the slave unit microphone 102 and the slave unit speaker 1 of the door phone slave unit 101.
14 and the handset microphone 309 and the handset speaker 308 of the cordless handset 301 transmit and receive the audio signals 105, 113, 311, and 305, and can communicate with the resident. Also, the cordless handset 301 visually recognizes the visitor displayed on the handset monitor unit 306, operates the electric lock / unlock button 312, sends an unlock control data signal 314 to the handset multiplexing circuit 316, and outputs the handset FM. Radio transmission circuit 31
7. Base unit FM radio wave receiving circuit 2 of intercom base unit 201
12. The electric lock unit 208 is unlocked by the unlock control data signal 215 via the second master unit separation circuit 213. The intercom slave unit 101 also operates the electric lock key operation unit 104 and sends out the unlock control data signal 107, so that the electric lock unit is transmitted via the slave unit multiplex circuit 118, the transmission path 110, and the first master unit separation circuit 203. 208 can be unlocked by the unlock control data signal 206. Further, the cordless handset 301 visually recognizes the visitor displayed by the handset monitor unit 306, operates the motor controller 313, sends a pan / tilt control data signal 315 to the handset multiplexing circuit 316, and transmits the handset FM radio wave. Circuit 317, base station FM radio wave reception circuit 212 of intercom base station 201, second base station separation circuit 213
Through the hybrid circuit 202 and the transmission path 110 as a pan / tilt control data signal 216 from the intercom 1
The motor unit 112 can be driven by the pan / tilt control data signal 111 via the slave unit separation circuit 119 to control the pan / tilt of the camera unit 103.

[0007]

As is apparent from the above description, according to the door phone apparatus of the present invention, the video signal can be transmitted to the cordless handset, and the control data signal can be transmitted from the cordless handset.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of a door phone device of the present invention.

FIG. 2 is a circuit configuration diagram of a conventional door phone device.

[Explanation of symbols]

 101: Doorphone slave unit 102: Slave microphone 103: Camera unit 105, 113 ... Audio signal 106 ... Video signal 112 ... Motor unit 114... Slave unit speaker 118... Slave unit multiplex circuit 119... Slave unit separation circuit 201... Intercom master unit 203. Machine separation circuit 207... Master monitor unit 208... Electric lock unit 209... Video / audio multiplex circuit 210... Master ultrasound transmission circuit 212. · Base unit FM radio wave reception circuit 213 ····· Second base unit separation circuit 301 ··· Cordless handset 302 ··· Handset ultrasonic reception circuit 303 ··· Handset separation circuit 305 311 ... Voice signal 306... Handset monitor unit 308... Handset speaker 309... Handset microphone 312... Electric lock / unlock button 313. ········ Unlock control data signal 315 ····· Pan / tilt control data signal 316 ····· Handset multiplexing circuit 317 ····· Handset FM radio wave transmission circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04B 11/00 H04B 11/00 C H04M 1/03 H04M 1/03 A H04N 7/18 H04N 7/18 H

Claims (3)

[Claims] An image of a visitor at an entrance is taken by a camera unit (103) of a door phone slave unit (101) and a video signal (10) is taken.
6), and the image is displayed on the master unit monitor unit (207) of the intercom master unit (201), and the visitor receives the slave unit microphone (102) and the slave unit speaker (1) of the doorphone slave unit.
14) and a handset microphone (309) and a handset speaker (3) of the cordless handset (301).
08) and audio signals (105, 113, 311 and 305)
A door phone device capable of communicating with a resident by transmitting and receiving a video signal, wherein the door phone slave device includes a slave device multiplexing circuit (118) for multiplexing the video signal, and the intercom master device is configured to receive a signal from the door phone slave device. A first master unit separation circuit (203) for separating the audio signal and the video signal and outputting the separated video signal to the master monitor unit;
A video / audio multiplexing circuit (209) for multiplexing the separated video signal and audio signal, and a master unit for outputting an ultrasonic signal (f1) modulated with the multiplexed video signal and audio signal An ultrasonic transmission circuit (210) and a radio signal (f2) transmitted from the cordless handset
And a second base unit separation circuit (213) for separating the audio signal from the received radio signal and transmitting the separated audio signal to the intercom slave unit side. And the cordless handset comprises:
A handset ultrasonic receiving circuit (302) for receiving an ultrasonic signal transmitted from the intercom master unit, a handset separating circuit (303) for separating a video signal from the received ultrasonic signal, and the separated video A handset monitor unit (306) for outputting a signal, a handset multiplexing circuit (316) for multiplexing the audio signal from the handset microphone, and a radio wave transmitting circuit for transmitting the multiplexed audio signal to the intercom master unit ( 3
17) A door phone device comprising: 2. The cordless handset visually recognizes a visitor displayed on the handset monitor unit, sends an unlock control data signal (314) to the handset multiplexing circuit, and transmits the unlocking control data signal (314) to the handset multiplexing circuit. An electric lock release button (312) for unlocking the electric lock unit (208) via the electric machine radio wave receiving circuit and the second master unit separation circuit.
The door phone device according to claim 1, further comprising: 3. The doorphone slave unit includes: a motor unit (112) for performing pan / tilt control of the camera unit by a pan / tilt control data signal (315) transmitted from the cordless handset; and the pan / tilt control. A cordless handset for recognizing a visitor displayed by the handset monitor unit, and transmitting the pan / tilt control data signal to the handset multiplexing circuit. Motor control for transmitting and controlling the camera unit by driving the motor unit via the radio wave transmission circuit, the base unit radio wave reception circuit, the second base unit separation circuit, and the slave unit separation circuit 2. The intercom apparatus according to claim 1, further comprising a container (313).