JP2978616B2 - Home telephone with TV monitor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home telephone with a television monitor and, more particularly, to a home telephone with a television monitor provided with a telephone monitor for a home telephone and a television monitor connected to a transmission line on the extension side of a home telephone main unit.

[0002]

2. Description of the Related Art Conventionally, as a home telephone with a television monitor, as shown in FIG. 3, an entrance device with a television camera EQ provided with a microphone 33, a speaker 32, a camera eye 31, and a call button 34. _11, the microphone 36, the intercom slave EQ ₁₂ provided with a speaker 35 and call buttons 37, the office line L ₃ and the intercom slave EQ ₁₂ to an outside line side
Is connected to a home telephone main unit 41, a handset 42 and a ten key 43.
_11, TE ₁₂ ··· and it is composed of a television monitor MQ _11, MQ ₁₂ ··· are proposed.

[0003] with a TV camera porch secondary apparatus EQ ₁₁ is a television monitor M via the cable L ₁ for the entrance door station with a TV camera
It is connected to the terminal T ₁₁ of Q _11, a video signal output terminal T ₉ of the television monitor MQ ₁₁ is connected to the video signal input terminal T ₁₀ of the television monitor MQ _12. The video side of the video / audio separation circuit 38 of the television monitor MQ ₁₁ to the terminal T ₁₁ is connected is connected to CRT39 a video signal output terminal T _9, the audio-side is connected to the terminal T _12. Furthermore, the terminal T ₁₂ is connected to the terminal T ₁₃ of the home telephone main device 41 in contact cable L _4, the terminal T ₁₄ and the cable L ₂ for the intercom slave to the terminal T ₁₅ and the office line L ₃ of the home telephone main device 41 Connected respectively. Further, the extension side of the home telephone main device 41 is connected to the home telephone for telephone terminal TE _11, TE ₁₂ ··· through the home telephone transmission line L ₅ which is connected to the terminal T _16.

[0004] In this case, when the user presses the call button 34 by a television camera with the entrance door station EQ _1, of a television monitor MQ ₁₁ video /
Video signal f ₁ which are separated by the audio separation circuit 38 is monitored by CRT39 spectrum shown in FIG. 4, the audio signal f ₂
It is sent to the terminal T ₁₃ of the home telephone main device 41 via the communication cable L ₄ from the terminal T _12. Control relating to the call button 34 at this time using a synchronization signal included in the video signal f _1. Incidentally, the audio signal f ₂ baseband video signal f ₁ is FM modulated with the picture carrier of 6MHz band. Office line L ₃ and the intercom slave EQ ₁₂ audio signals f ₂ of home telephone systems which are connected are exchanged baseband as shown in FIG. 5, the control uses the tone burst signal 32KHz.

[0005] Thus, the entrance camera with a TV camera EQ ₁₁
And a television monitor MQ _11, MQ ₁₂ transmission system and the office line L ₃ of the composed video signal f ₁ in., Intercom slave EQ _12, home telephone main device 41 and the home telephone for telephone terminal TE _11, TE ₁₂ · · since transmission system speech signals f ₂ composed of, are independent of each other, the design conditions complicated, the wiring work redundancy, such as not easy video additional construction, such as to add an image to the home telephone in operation There are difficulties.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described difficulties, and has been made in consideration of the above-described drawbacks. It is an object of the present invention to provide a home telephone with a television monitor that can be processed.

[0007]

SUMMARY OF THE INVENTION A home telephone with a television monitor according to the present invention comprises a television camera for generating a video signal of a visitor, a microphone for transmitting / receiving an audio signal, and a television camera-equipped entrance device. A home phone main unit in which a door phone slave unit provided with a microphone and a speaker for transmitting and receiving an audio signal via the camera-equipped front slave unit cable is connected via the door phone slave unit cable, and the office line is connected to the outside line side. A home telephone telephone terminal connected to the home telephone transmission line on the extension side of the home telephone main unit and transmitting and receiving audio signals of the door phone subunit and the office line and the entrance terminal with a television camera, and the transmission line together with the home telephone telephone terminal. A television monitor for monitoring a video signal generated by the television camera connected thereto; Down main unit, the intercom slave interface connected entrance door station interface connected to the power supply for a television camera which supplies power to the entrance door station and TV camera entrance door station TV camera, the intercom slave,
Office line interface connected to the office line, door phone slave unit interface, audio circuit connected to the office line interface, entrance unit interface and audio circuit, video / audio multiplexing circuit connected to the transmission line, entrance unit interface , An intercom slave unit interface, an office line interface, an audio circuit, and a video / audio multiplexing circuit.

[0008]

In the home telephone with a television monitor constructed as described above, the audio signal generated by the entrance unit with a television camera is connected to the transmission line on the extension side of the home telephone main unit together with the audio signal of the door phone and the office line. Is transmitted to and received from the home telephone terminal. The video signal transmitted from the entrance unit with a television camera is transmitted to a television monitor connected to the transmission line on the extension side of the home telephone main unit together with the telephone terminal for home telephone.

Therefore, a transmission system of a video signal composed of an entrance unit with a television camera and a television monitor and a transmission system of an audio signal composed of a station line, a door phone sub unit, a home telephone main unit, and a telephone terminal for a home telephone are used for a home telephone. Since the connection is made via the main device, the procedure of video addition work such as simplification of design conditions relating to audio and video systems, standardization of wiring work, and addition of video to a home telephone in operation can be achieved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a home telephone with a television monitor according to the present invention will be described below in detail with reference to FIGS. As shown in FIG. 1, the home telephone with a television monitor according to the present invention includes a microphone 13, a speaker 12, a camera eye 11, and an entrance device with a television camera EQ ₁ provided with a call button 14, a microphone 16, a speaker 15, and a call button 17. A home telephone main unit 1 having a door phone handset EQ ₂ provided therein, an office line L ₃ and a door phone handset EQ ₂ connected to the outside line side, and a home phone telephone terminal TE ₁ , T provided with a handset 21 and a numeric keypad 22.
TV monitor MQ ₁ provided with the E ₂ · · · and CRT 23, composed of a television monitor MQ ₂ · · ·.

[0011] The TV camera with the entrance door station EQ ₁ and the terminal T ₁ of the home telephone main apparatus 1 via the cable L ₁ for the entrance door station with a TV camera, equipped intercom slave EQ ₂ is via the intercom handset cable L ₂ They are respectively connected to the terminal T ₂ Te. The office line L ₃ is connected to the terminal T _3. Moreover, home telephone for telephone terminal TE ₁₁ the home telephone transmission line L ₅ which is connected to the extension-side terminal T ₄ of the home telephone main device 1, TE ₁₂ · · · and the television monitor MQ _1, TV monitor MQ ₂ · · · Is connected.

The home telephone main unit 1 includes an entrance interface 2 to which terminals T _{1 to} T ₃ are connected, an intercom interface 3, an office line interface 4 and a video / audio multiplexing circuit 5, an audio circuit 6, and a television camera. Power supply 7, C
It consists of PUs 10, the entrance door station interface 2 is connected to the input side of the video / audio multiplexing circuit 5 which the terminal T ₄ is connected. Moreover, the intercom slave interface 3 and the central office line interface 4 is connected to the audio side of the video / audio multiplexing circuit 5 via the audio circuit 6, the television camera power supply 7 to the TV camera entrance door station EQ ₁ entrance It is connected to the terminal T ₁ via the slave unit interface 2. Further, the control side of the entrance child device interface 2, the door phone child device interface 3, the office line interface 4, the video / audio multiplexing circuit 5 and the audio circuit 6 is connected to the CPU 10.

[0013] Here, when the user presses the call button 14 by a television camera with the entrance door station EQ _1, the video signal f ₁ from the home telephone main device terminal T ₁ of the 1 via the cable L ₁ for the entrance door station TV camera The data is input to the entrance cordless handset interface 2. The video signal f ₁ input to the entrance cordless handset interface 2 is transmitted to the home telephone transmission line L ₅ connected to the terminal T ₄ via the video / audio multiplexing circuit 5, and FIG.
.. Of the television monitor MQ ₁ , the television monitor MQ ₂ ... With the spectrum FM-modulated by the 6 MHz band video carrier shown in FIG.
It is sent to RT23.

[0014] the office line L ₃ and intercom slave EQ ₂ of the intercom slave cable L ₂ terminal T ₃ via the voice signal f ₂ inputted to the terminal T ₂ are video / audio multiplexed via the audio circuit 6 Are transmitted to and received from the home telephone set terminals TE ₁ , TE _2, ... In the baseband shown in FIG. Similarly, the audio signal f ₂ from the TV camera-equipped entrance terminal EQ ₁ is also transmitted from the home telephone terminal TE ₁ , TE 2
₂ ... Sent and received mutually. The control of the video system and the audio system is executed by a control signal of 32 KHz having a common control logic.

In this home telephone with a television monitor,
TV camera porch secondary apparatus EQ ₁ and a television monitor MQ _1,
MQ ₂ transmission system composed video signal f ₁ in ... and office line L _3,
Intercom slave EQ _2, since home telephone main device 1 and the home telephone for telephone terminal TE _1, TE transmission system of an audio signal f _2, which is composed of ₂ ... are connected via a home telephone main device 1, audio and video It is possible to simplify the design conditions related to the system, standardize the wiring work, and make the procedure of the image addition work such as adding the image to the operating home telephone.

[0016]

As is apparent from the above description, according to the home telephone with a television monitor of the present invention, the design conditions relating to the audio and video systems are simplified, the wiring work is standardized, and the video is added to the home telephone in operation. The procedure of video addition work, such as performing, is planned.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a home telephone with a television monitor according to the present invention.

FIG. 2 is a configuration diagram of a signal waveform of a home telephone with a television monitor according to the present invention.

FIG. 3 is a block diagram of a conventional home telephone with a television monitor.

FIG. 4 is a configuration diagram of a video signal waveform of a conventional home telephone with a television monitor.

FIG. 5 is a configuration diagram of an audio signal waveform of a conventional home telephone with a television monitor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Home telephone main unit 7 ... Power supply for television camera 2 ... Entrance cordless handset interface 3 ... Doorphone cordless handset interface 4 ... Office line interface 6 Audio circuit 5 Video / audio multiplexing circuit 10 CPU 16 Microphone 15 Speaker 13・ ・ ・ ・ ・ ・ Microphone 12 ・ ・ ・ ・ ・ ・ Speaker EQ ₁・ ・ ・ ・ ・ ・ Entrance unit with TV camera EQ ₂・ ・ ・ ・ ・ ・ Intercom unit TE ₁ , TE ₂・ ・ ・ ・ ・ ・- home telephone for telephone terminal MQ _1, MQ ₂ ······ TV monitor L ₃ ······ office line L ₁ ······ TV camera with the entrance door station for the cable L ₂ ···· for ... the intercom slave cable L ₅ ······ home telephone for transmission line

Claims (1)

(57) [Claims] 1. A television for generating a video signal of an image of a visitor.
Bi-camera (11), microphone (13) for transmitting and receiving audio signals
Cordless handset with a TV camera and a speaker (12)
(EQ ₁ ) is a cable for entrance cordless handset with TV camera (L ₁ )
Microphone 16 for transmitting and receiving audio signals via the
Door (EQ ₂ ) equipped with a
Via the slave unit cable (L ₂ ) and the central office line (L ₃ )
Home telephone main unit connected to each outside line
(1) a home on the extension side of the home telephone main unit;
Connected to a telephone transmission line (L ₅ ), and
Sound of the slave unit and the station line and the entrance slave unit with the TV camera
Telephone terminal for home telephone (T
E ₁ , TE ₂ ) and the home telephone terminal.
Generated by the TV camera connected to the transmission path
TV monitor for monitoring the video signal and (MQ _1, MQ ₂₎
The main unit of the home telephone is provided with the entrance with the television camera.
Supply power to the slave unit and the entrance slave unit with the TV camera
Entrance cordless handset interface connected to TV camera power supply (7)
Face (2), a door phone connected to the door phone slave unit
Slave unit interface (3), a station connected to the station line
Wire interface (4), the intercom slave unit interface
Source and audio circuit connected to the office line interface
(6) the entrance cordless handset interface and the audio circuit
Video / audio multiplexing circuit connected to the transmission line
(5) the entrance cordless handset interface, the doorphone child
Interface, the line interface, the audio
Circuit and CPU controlling the video / audio multiplexing circuit
A home telephone with a television monitor, characterized by comprising (10) .