JPH0646141Y2 - Tv intercom device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a TV intercom apparatus, and more particularly to a TV intercom apparatus in which a recording memory of an answering machine can be used as an extended still picture memory.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, as shown in FIG. 2, a communication circuit 23, a handset 3
3, semiconductor memory circuit 35 having A / D conversion circuit 34, still image memory ME ₁ ... ME ₆ , D / A conversion circuit 36, television monitor 7, CPU 3
9, an indoor master unit 31 provided with a recording button FK ₁ , which is a function button, a playback button FK ₂ , and an erase button FK ₃ , a camera eye 42, a call button 4
There is known a TV intercom device including an entrance cordless handset 41 having a speaker 4, a speaker 44, and a microphone 45.

The terminal 31a of the entrance slave device 41 and the indoor master device 31 are connected by cables L ₁ and L ₂ , and the call between the indoor slave device 31 and the entrance slave device 41 is made by the entrance slave device 41.
This is performed by the handset 33 via the speaker 44, the microphone 45, and the communication circuit 32 of the indoor base unit 31.

The terminal 31a of the indoor master device 31 is connected to the input side of the A / D conversion circuit 34, and the output side of the A / D conversion circuit 34 is connected to the input side of the semiconductor memory circuit 35. Output side D / A conversion circuit 3 of semiconductor memory circuit 35
6 is connected to the input side and the output side is connected to the television monitor 37.

Still image memory ME ₁ ... ME ₆ is provided in the semiconductor memory circuit 35, and when the recording button FK ₁ is pressed, the video signal of the visitor imaged by the camera eye 42 of the entrance slave 41 is input to the A / D conversion circuit 34. Is
Video signal is digitized by the A / D conversion circuit 34, the still image memory ME ₁ when the still image memory ME ₁ has not been recorded, when the still image memory ME ₁ is recorded still picture memory ME ₂
Record to. Press the play button FK ₂ to store still image memories ME ₁ and ME ₂
When sequentially reproducing, playing a still picture memory ME _2, recorded video signal to the still image memory ME ₂ Press erase button FK ₃ is deleted.

Note that the video signals played in the still image memories ME ₁ and ME ₂ are
It is analogized by the A conversion circuit 36 and can be monitored by the television monitor 37.

When the number of visitors in the TV intercom apparatus of this configuration is larger than the number of still image memories ME _{1 to} ME ₆ provided in the semiconductor memory circuit 5, a prescribed screen, for example, 6 screens of still image memories ME _{1 to} ME ₆ will be displayed. When recorded, it has the drawback of deleting from the first screen.

[Object of the Invention] The present invention has been conceived in view of the above-mentioned difficulties, and an object of the present invention is to provide a television intercom device in which a recording memory of an answering machine can be used as an extended still image memory.

[Means for Solving the Problems] A TV intercom device according to the present invention includes an entrance cordless handset provided with a TV camera for imaging a visitor and generating a video signal, an indoor master unit connected to the entrance cordless handset, and an indoor unit The indoor master unit is equipped with an answering machine connected to the master unit, and the indoor master unit stores a still image memory that sequentially records the video signal sent from the entrance slave unit as a digital signal for each screen, and the final still image in the still image memory. When the memory has been recorded and the latest video signal has been sent out, the final still image memory has a digital signal / voice band signal conversion means for converting the video signal recorded into a voice band signal. The telephone set records the video signal converted into the voice band signal by the digital signal / voice band signal conversion means in the recording memory of the answering machine and the voice band signal recorded in the recording memory of the answering machine. And a recording / reproduction area management circuit for controlling start / stop, recording, and reproduction area of the audio recording / reproducing means. It has an audio band signal / digital signal converting means for converting the band signal into a video signal by a digital signal and transferring it to a still image memory.

[Embodiment] A preferred embodiment of the TV door intercom apparatus of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, a TV intercom device includes an entrance slave unit 15 provided with a TV camera that images a visitor and generates a video signal, an indoor master unit 1 connected to the entrance slave unit, and an indoor master unit. And an answering machine 21 connected to.

The indoor base unit 1 includes a communication circuit 2, a handset 3, an A / D conversion circuit 4, and a semiconductor memory circuit 5 having still image memories ME ₁ ... ME ₆ .
D / A conversion circuit 6, TV monitor 7, voice band signal / digital signal conversion circuit 9, digital signal / voice band signal conversion circuit 10, signal interface 11, cable driver 12
a, 12b, and a CPU 14 having a built-in still image memory program.

The entrance cordless handset 15 includes a camera eye 16, a call button 17, a speaker 18,
It has a microphone 19.

The answering machine 21 has a voice communication unit 22, an operation unit 23, a tape recorder 25 as a recording memory serving as an extended still image memory, a voice recording / playback unit 24 having a recording / playback area management circuit 26, and an answering machine CPU 27.

The terminal T ₁ of the entrance slave unit 15 and the indoor master unit 1 are connected by cables L ₁ and L ₂ , and the call between the indoor master unit 1 and the entrance slave unit 15 is performed by the speaker 18, the microphone 19 and the indoor master unit of the entrance slave unit 15. It is performed by the handset 3 via the communication circuit 2 of 1.

Terminal T ₁ of the indoor main unit 1 is connected to the input side of the A / D conversion circuit 4, the delivery side of the A / D conversion circuit 4 is connected to the input side of the semiconductor memory circuit 5. The output side of the semiconductor memory circuit 5 is connected to the input side of the D / A conversion circuit 6, and the output side is connected to the television monitor 7. The semiconductor memory circuit 5 includes still image memories ME ₁ ... ME ₆
Is provided, and when the recording button FK ₁ is pressed, the video signal of the visitor captured by the camera eye 16 of the entrance cordless handset 15 is input to the A / D conversion circuit 4, and the video signal is digitized by the A / D conversion circuit 4. And recorded in still image memory ME _{1 to} ME ₆ .

The digital signal / voice band signal conversion circuit 10 and the semiconductor storage circuit 5 are connected by the data bus 13b, and the digital signal / voice signal band conversion circuit 10 is output from the semiconductor storage circuit 5 under the control of the still image memory management program provided in the CPU 14. The converted digital signal is converted into an audio signal band and sent from the terminal T ₃ via the cable driver 12b.

The voice band signal / digital signal conversion circuit 9 and the semiconductor memory circuit 5 are connected by the data bus 13a, and the voice band signal / digital conversion circuit 9 is controlled from the still image memory management program provided in the CPU 14 from the terminal T ₃ to the cable driver 12a. The voice band signal input via the converter is converted into a digital signal and sent to the semiconductor memory circuit 5.

The call circuit 22 of the answering machine 21 is connected to the terminal line L ₃ , via the terminal T ₆ .
It is connected to L _4, and the operation unit 23, the voice recording / playback unit 24, and the call circuit 22 are connected to the answering machine CPU 27 by the data buses 28a, 28b, and 28c.

Answering CPU27 the terminal 4 is connected to the signal interface 11 via the terminal T ₂ of the indoor base unit 1, CPU 14 with voice CPU27 performs transmission and reception of each other to a control signal via the signal interface 11.

The recording / playback area management circuit 26 of the voice recording / playback unit 24 receives the control of the answering machine CPU 27, manages the recording / playback area of the tape recorder 25, and manages the video signal of the audio band signal input from the terminal T ₅ to the tape recorder. Video is recorded at a predetermined position of 25, the video signal recorded in the tape recorder 25 is reproduced, and the video signal is sent to the terminal T ₅ .

[Advantage of the Invention] In the TV intercom apparatus thus configured, when the recording buttons FK ₁ are sequentially pressed, the first recording button FK ₁ is operated to record in the still image memory ME ₁ and the second recording is performed. recording button FK still image memory ME _{1 1} operation is the latest image signals are transferred to the still image memory ME ₂ is recorded in the still image memory ME _1.

By the following operation, the still image memory ME ₂ is sequentially transferred to the still image memory ME ₃ and the still image memory ME ₁ is transferred to the still image memory ME ₂ , and the latest video signal is recorded in the still image memory ME _{1 which} has become empty. .

In this way, when the still image memory ME _{6 is} sequentially transferred and the still image memory ME ₆ is already recorded, when the record button FK ₁ is further pressed, the still image memory ME is controlled by the still image memory management program provided in the CPU 14. _The video signal recorded in ₆ is converted into an audio band signal by the digital signal / audio band signal conversion circuit 10.

The video signal converted into the audio band signal is recorded in the extended still image memory of the tape recorder 25, and the latest video signal is recorded in the still image memory ME ₁ . Control of start, stop, recording, and playback area of the tape recorder 25 is performed by the CPU14,
This is performed by the signal interface 11, the answering machine CPU 27, and the recording / reproducing area management circuit 26. When the play button FK ₂ is pressed, the contents of the still picture memory ME ₁ can be sequentially monitored on the television monitor 7.
When the sequential playback button FK ₂ is pressed and the video signals recorded in the still image memories ME _{2 to} ME ₆ are finished playing, the voice band signals recorded in the extended still image memory of the tape recorder 25 are converted to voice band signals / digital conversion. It is converted into a digital signal in the circuit 9 and is transferred back to the still image memories ME _{6 to} ME ₁ , and the contents can be monitored by the television monitor 7.

The recording condition in the above-described embodiment is, for example, the entrance cordless handset 15
A function of the still image memory management program of the CPU 14 may be added so that the call button 17 of is pressed and the video is recorded even when the entrance master unit 1 does not respond.

[Effects of the Invention] As is clear from the above embodiments, the TV intercom apparatus of the present invention is connected to the front door unit provided with a TV camera that images a visitor and generates a video signal, and is connected to the front door unit. An indoor master unit and an answering machine connected to the indoor master unit,
In the indoor master unit, the still image memory that sequentially records the video signal sent from the entrance slave unit with a digital signal for each screen, and the final still image memory of the still image memory are already recorded,
Further, when the latest video signal is transmitted, it has a digital signal / voice band signal converting means for converting the video signal recorded in the final still image memory into a voice band signal. A voice recording / reproducing means for recording the video signal converted into the voice band signal by the voice band signal converting means in the recording memory of the answering machine and reproducing the voice band signal recorded in the recording memory of the answering machine, and a voice recording / reproducing means. It has a recording / playback area management circuit for controlling the start, stop, recording, and playback area, and the indoor master unit converts the audio band signal reproduced by the audio recording / playback means into a video signal and stops it. By having a voice band signal / digital signal conversion means to transfer to the image memory, all of the still image memory has already been recorded, and no more can be recorded. It can be used to record the memory of the can answering machine as an extension to a still image memory.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a TV intercom system according to the present invention, and FIG. 2 is a block diagram of a conventional TV intercom system. 1 ... Indoor main unit ME ₁ ... ME ₆ ... Still image memory 9 ... Voice band signal / digital signal conversion circuit (means) 10 ... Digital signal / voice band signal conversion circuit (means) 15 ... Door unit 21 …… Answering machine 25 …… Tape recorder (voice recording / playback means) 26 …… Recording / playback area management circuit

Claims (1)

[Scope of utility model registration request] 1. An entrance cordless handset (15) provided with a television camera (16) for imaging a visitor and generating a video signal, an indoor master unit (1) connected to the entrance cordless handset, and the indoor parent An answering machine (21) connected to the machine, the indoor master unit is a still image memory (ME ₁ ... which sequentially records the video signal sent from the entrance slave unit as a digital signal for each screen. ME ₆ ) and the final still image memory (ME ₆ ) of the still image memory have been recorded, and when the latest video signal is sent, the video signal recorded in this final still image memory is used as the audio band signal. And a digital signal / voice band signal converting means (10) for converting the video signal converted into a voice band signal by the digital signal / voice band signal converting means into a recording memory of the answering machine. Recorded on and answering machine A voice recording / reproducing means (25) for reproducing the voice band signal recorded in the recording memory, and a recording / reproducing area management circuit (26) for controlling start / stop, recording, and reproducing area of the voice recording / reproducing means. The indoor master unit has an audio band signal / digital signal conversion unit (9) for converting the audio band signal reproduced by the audio recording / reproducing unit into a video signal by a digital signal and transferring the video signal to the still image memory. A door intercom device having: