JPH08317087A - Video monitor - Google Patents

Abstract

PURPOSE: To reduce the cost by using a telephone set and a television receiver of each room and a common viewing installation for television receivers for a multiple dwelling house so as to omit an exclusive interphone and monitor television receiver installed in each room and exclusive interconnection wiring. CONSTITUTION: A stored image in a frame memory 9 is displayed on a television receiver when a residence of each room switches on a television receiver 14 usually and depresses a selection number not in use. When a visitor comes, information of the visitor picked up by a monitor camera 6 is displayed on a pattern corresponding to a selection number of a television receiver 14 of a room (room no. 201) being a visited object. Simultaneously a residence of the visited room makes talking with the visitor by way of a telephone set 15. On the other hand, no information on the visitor is displayed on television receivers of other rooms than the room no. 201 even when the selection number is selected.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a television monitor. More specifically, the visitor's information obtained through the intercom and monitor camera installed at the common entrance of the apartment complex is transmitted using the telephone and TV of the called party and the co-listening facility of the television of the apartment complex. Television monitoring device.

[0002]

2. Description of the Related Art There has been conventionally known a television monitoring apparatus which installs a monitor camera in addition to an intercom at a common entrance of a collective housing such as a condominium to transmit visitor information to a called room. According to this, since the information of the visitor can be confirmed not only by hearing but also by sight, the sense of security is further expanded.

[0003]

However, there is a problem that the cost becomes high because a dedicated intercom and monitor TV are required for each room of the apartment house. In addition, when transmitting the video signal from the monitor camera installed at the common entrance to each room, it is necessary to newly wire to connect the monitor camera and the monitor TV in each room in parallel. The cost for construction will be higher and the construction will be troublesome.

On the other hand, it is known that the intercoms installed in each room also function as telephones in each room so that the intercoms in each room are not required. Therefore, the function of the monitor TV installed in each room is known. There is a strong demand to further reduce the cost by using the TV for each room.

Therefore, an object of the present invention is to save the dedicated intercom and monitor TV installed in each room and the dedicated connection wiring by utilizing the co-listening equipment of the telephone and the TV in each room and the TV in the apartment house. Another object of the present invention is to provide a television monitoring device that can reduce costs.

[0006]

In order to achieve the above object, the television monitoring apparatus of the present invention is an apartment house having a television co-listening facility for distributing a television signal from a receiving antenna or a cable to each room. In a TV monitoring device that installs an intercom and a monitor camera at the common entrance and transmits the information of the visitor to the called room, the video signal of the monitor camera is a frequency for the mid band between VHF band 3 and 4 channels. V which is modulated to and output
HF modulating means, memory means in which a predetermined image is stored in advance, second modulating means for modulating and outputting the image signal stored in the memory means to a predetermined frequency for an empty channel, and normally connected to the second modulating means. Output signal is input to the co-listening equipment of the television, and the connection is switched at the time of calling to connect to the VHF modulation means to input the output signal to the co-listening equipment of the television. Any one of the signal line of the intercom and the external line. A private branch exchange that connects the used line to the telephone installed in the called room, or the line connected to the telephone inserted between the private branch exchange and the telephone in each room, and the line connected to the telephone or the outside line If it is a signal line of an intercom, a detecting means for outputting the corresponding signal, and a detecting means inserted between the television co-listening equipment and the television in each room. Frequency conversion means for converting the output signal of the VHF modulation means input to the television in the called room when the signal is output into a frequency for a predetermined empty channel modulated by the second modulation means. (Claim 1).

Further, in the television monitor according to the first aspect, the detecting means is inserted between the telephone terminal wired in advance in each room and the telephone in each room, and the frequency converting means is previously installed in each room. It is preferable that the detecting means and the frequency converting means are installed in each room by inserting them between the wired terminals for TV and the TV in each room (claim 2). Furthermore, it is preferable to integrate the detection means and the frequency conversion means (claim 3).

The VHF modulating means is arranged to modulate the video signal of the monitor camera into a frequency for a mid band channel between the 3rd channel and the 4th channel of the VHF band, but instead, the video signal of the monitor camera is VHF.
The frequency may be modulated to a frequency for a super high band channel between the band 12 channel and the UHF 13 channel and output to the co-listening equipment of the television (claim 4).

[0009]

The second modulating means modulates the image signal stored in the memory means to a predetermined frequency for the empty channel and outputs it. This modulated signal (for example, a signal of 471 MHz) is input to the television via the co-listening facility of the television. Therefore, in order to display the stored image on the television by pressing an unused selection number of the television, for example, the selection number 11, it is sufficient to adjust while watching the image on the television. Setting the frequency is simple. As a result, when the resident of each room turns on the television and presses the selection number 11 in normal times (when there is no call from the visitor), the image stored in the memory means is displayed on the television.

When a visitor makes a call via the intercom, the signal switching means switches the connection at the normal time, that is, the connection with the second modulating means, and connects with the VHF modulating means to output the output signal to the television. Input to the listening equipment. As a result, the video signal of the monitor camera, which is modulated to the frequency for the mid-band channel between the VHF band 3 and 4 channels, is input to the television through the co-listening facility of the television. At this time, in the callee room (for example, room 201), the signal from the intercom is connected to the telephone in room 201 through the private branch exchange, so the signal indicating the signal line of the intercom, not the external line, is sent from the detecting means. It is output to the frequency conversion means. The frequency conversion means converts the output signal of the VHF modulation means input to the television of the called room (room 201) into the frequency (471 MHz) of the output signal of the second modulation means.

Therefore, the resident in room 201 can visually recognize the information of the visitor by turning on the television and pressing the selection number 11, or by simply changing the selection number to 11 when watching another TV program. Obtainable. At the same time, the visitor's information can be acquired auditorily through the telephone. In addition, just calling from the intercom, VH
Since the output signal of the F modulator is converted to the frequency of 471 MHz, the occupants of room 201 can obtain the information of the visitor on the television without taking the handset. On the other hand, V input to the TV in rooms other than the called room (Room 201)
Since the output signal of the HF modulating means is not converted to the frequency (471 MHz) of the output signal of the second modulating means, a resident of a room other than the called room (room 201) may select the number 1
Even if you set it to 1 and watch the TV, the TV does not appear because the frequency is different. Therefore, it is not possible to obtain information about visitors.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A television monitoring apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an outline of the configuration of the television monitoring device. This television monitoring device comprises a receiving antenna 1 for the UHF band and the VHF band, a co-listening booster 2, a mixer 3, and a distributor 4, and receives received television signals in each room (room 101, room 102, room 201, Room 202,
...), the co-listening equipment of the television to be distributed, the intercom 5 and the monitor camera 6 installed at the collective entrance of the apartment, the VHF modulator 7 and the amplifier 8 connected to the monitor camera 6, and one stored image are stored. Frame memory 9, UHF connected to the frame memory 9
A signal changeover switch 12 for switching any one of the modulator 10 and the amplifier 11, the amplifier 8 and the amplifier 11 to input the output signal thereof to the mixer 3, a private branch exchange (PBX) 13 for condominiums, and a household switch for each room. Television (color television) 14 and home telephone 1
Multiple adapter 2 connected to 5 and installed in each room
0, other solenoids 16 for locking doors (not shown) of the entrance hall, telephone terminals 17 connected to the private branch exchange 13 in each room, television terminals connected to the distributor 4 in each room It is composed of 18, etc.

The intercom 5 has a call switch 5a,
A cancel switch 5b, a microphone 5c, a ten-key pad 5d, a display panel 5e, and a speaker 5f are provided. When a visitor inputs the visitor's room number with the ten-key 5d and then presses the call switch 5a, the callee's room (for example, room 201). ) Phone 15 is connected. The input data is cleared by pressing the cancel switch 5b when the input is mistaken. Also, cancel switch 5
The caller can also hang up by pressing b. The monitor camera 6, which is a small CCD color camera, captures an image of a visitor at the entrance hall. The monitor camera 6 may be built in the intercom 5. The video signal of the monitor camera 6 is modulated by the VHF modulator 7 functioning as a VHF modulating means to a channel frequency of a mid band (108 MHz to 170 MHz) between 3 and 4 channels of the VHF band. This is because the mid band is not usually used as a frequency for television channels. In this example, it was set to 149 MHz.

The frame memory 9 stores in advance a predetermined image, for example, a certain landscape image, a graphic image, or a character image indicating that there is no visitor. The stored image signal is U which functions as the second modulating means.
The HF modulator 10 modulates the frequency to a predetermined frequency for an empty channel. The frequency for the predetermined empty channel mentioned here is UHF if it is a frequency other than the frequency actually used as the frequency for the television channel.
It means that it may be a band or a VHF band. In this embodiment, 13 channels (471 MHz) are set. This is because it is relatively unused as the frequency for the channel of the television and the adjustment from the VHF band is easy.

The signal change-over switch 12 is normally connected to the output terminal of the amplifier 11 (when a visitor does not call), and
The stored image signal modulated to the frequency for 3 channels is sent to each room through the co-listening equipment of the TV.
At the time of calling, that is, when the visitor inputs the room number of the visit destination with the intercom 5, and presses the call switch 5a, the power inside the intercom 5 is supplied, the relay RY operates, and the signal changeover switch 12 switches the connection. It is connected to the output terminal of the amplifier 8. As a result, the video signal modulated to the mid-band frequency is sent to each room through the co-listening equipment of the television. Intercom 5
When the cancel switch 5b is pressed, the power supply is cut off and the relay RY does not work. Therefore, the signal changeover switch 12 returns to its original state and is connected to the output terminal of the amplifier 11. Further, since the timer (1 minute timer in this embodiment) is activated by pressing the call switch 5a, the power supply is cut off after 1 minute has elapsed. Connect to the output end of. Further, since the private branch exchange 13 issues a disconnection signal in response to the handset of the telephone in the called room being dropped after the call, the power supply is also cut off at this time. The changeover switch 12 is connected to the output terminal of the amplifier 11.

A signal line and an outside line of the intercom 5 are input to the private branch exchange 13, and one of the used lines is connected to a telephone installed in the called room. The solenoid 16 for locking the door of the gathering entrance works by inputting a specific personal identification number from the telephone 15 in the called room, and the lock is opened. Alternatively, the valve of the air cylinder may be opened by inputting a specific personal identification number, and the door may be directly moved by the air cylinder to be opened.

FIG. 2 shows a schematic configuration of the multiple adapter 20, and FIGS. 3 and 4 show signals at points A to G, respectively. The multiple adapter 20 is in a state in which the detection circuit 30 and the frequency conversion circuit 40 are integrated. The detection circuit 30 is inserted between the telephone terminal 17 preliminarily wired in each room and the telephone 15 in each room, and the frequency conversion circuit 40 is the television terminal 18 preliminarily wired in each room and the television 14 in each room. Has been inserted between and. The detection circuit 30 can be connected near the private branch exchange 13 or the frequency conversion circuit 40 can be connected near the distributor 4.
It is installed in each room due to problems of maintenance, connectivity with the television 14 and telephone 15, and connectivity with the detection circuit 30 and the frequency conversion circuit 40, and both are integrated.

The detection circuit 30 is a ringing detection circuit 3.
1, a ringing tone identification circuit 32, a loop current detection circuit 33, a signal holding circuit 34, etc., detects whether the line connected to the telephone 15 by the private branch exchange 13 is a signal line from the intercom 5 or an outside line, and If the signal line is No. 5, it is a circuit that outputs a corresponding signal. The ringing detection circuit 31 is a circuit that detects a signal waveform sent from the private branch exchange 13. When the receiver of the called telephone 15 is picked up, the ringing detection circuit 31 does not work. FIG.
As shown in A of FIG. 2, in the case of the signal from the intercom 5, the signal waveform is such that a ringing tone of 0.25 seconds is emitted twice at intervals of 2 seconds, while in the case of an outside line, at intervals of 2 seconds for 1 second. It becomes the signal waveform that emits the ringing tone.

The signal detected by the ringing detection circuit 31 is input to the ringing tone identification circuit 32 and is waveformd by a synchronous T flip-flop 321 (input of clock pulse at 20 ms intervals) which functions as a retriggerable one-shot multi circuit. It is shaped (B in FIG. 3). Next, the synchronous T flip-flop 322 (input of clock pulse at 1 s interval) forms a pulse signal having a constant width t (1 s) from the trailing edge of the pulse signal of B in FIG. 3 (C in FIG. 3). ). Next, the AND circuit 323 combines the B pulse signal and the C pulse signal (D in FIG. 3). As a result, the pulse signal of 0.25 s is output in the case of the signal of the intercom 5, but the pulse signal is not output in the case of the outside line. And intercom 5
In the case of the signal of, the synchronous T flip-flop 324 (4
The signal (E in FIG. 3 and E in FIG. 4) converted from the trailing edge of the first pulse signal into the continuous signal of the pulse train by the input of the clock pulse at s intervals) is input to the AND circuit 342 of the signal holding circuit 34. It is output.

The loop current detection circuit 33 is a circuit that detects a current when the handset of the telephone 15 in the called room is picked up, and outputs a signal until the call is disconnected, such as when the handset is hung up (FIG. 4). F). The signal detected by the loop current detection circuit 33 is input to the signal holding circuit 34, and the AND circuit 342 outputs the signal from the ring tone identification circuit 32 via a synchronous T flip-flop 341 (input of clock pulses at 1 s intervals). Combined with output. Then, after the signal is held by the flip-flop 343, a pulse signal as shown by G in FIG. 4 is output to the frequency conversion circuit 40. That is, there is a call from the intercom 5, and a signal is output from the detection circuit 30 to the frequency conversion circuit 40 until the call is disconnected.

The frequency conversion circuit 40 includes a tuning amplifier 41,
It is composed of a mixer 42, a local oscillator 43, a first multiplier 44, and a second multiplier 45, and a signal is output from the detection circuit 30 (at the time of calling) and is input to the television 14 in the called room at normal times. A circuit for modulating the output signal of the VHF modulator 7 into a predetermined frequency for the empty channel modulated by the UHF modulator 10, that is, 13 channels in the case of the present embodiment, and outputting it to the television 14.

The tuning amplifier 41 has a tuning frequency of 149M.
It is a high frequency amplifier of Hz. Therefore, the output signal of the VHF modulator 7 is amplified. The local oscillator 43 is 5
It outputs a signal with a frequency of 3.6667 MHz. This signal is tripled (× 3) by the first multiplier 44 and further doubled (× 2) by the second multiplier 45. As a result, about 322
The frequency of (= 53.6667 × 3 × 2) MHz is combined with the frequency of the output signal of the tuning amplifier 41 by the mixer 42. That is, the output signal of the VHF modulator 7 is a signal having a frequency of 471 (149 + 322) MHz, which is the same as the frequency (471 MHz) of the output signal of the UHF modulator 10, in which the frequency signal of 322 MHz is combined with the frequency (149 MHz). Is converted to. The power source VCC is supplied to the tuning amplifier 41, the mixer 42, the first multiplier 44, and the second multiplier 45 only while the signal is input from the detection circuit 30, so that these devices operate only during this period. Has become. That is, there is a call from the intercom 5, and signals from the local oscillator 43 are combined until the call is disconnected.

The case of using the television monitoring device configured as described above will be described. (Operation before use) Since the output signal of the UHF modulator 10 is input to the television 14 through the co-listening equipment of the television and the multi-adapter 20, first, the unused selection number of the television 14, for example, the selection number 11 By pressing, the output signal of the UHF modulator 10, that is, the image stored in the frame memory 9 is changed to the television 14
The frequency corresponding to selection number 11 is set so as to be displayed on the screen. As a result, the frequency corresponding to selection number 11 is set to the frequency 471 MHz for channel 13. In this set, the operation is easy because it is sufficient to simply adjust the stored image to be displayed on the screen without preparing a special device. The reason why the unused selection number 11 of the television 14 is set is to avoid interruption of the television program by calling of the visitor.

(Normally) When the resident of each room turns on the television 14 and presses the selection number 11, the image stored in the frame memory 9 is displayed on the television 14.

(At the time of calling) When a call is made from the visitor by the call switch 5a of the intercom 5, the signal changeover switch 12 is connected to the output end of the amplifier 11, so that the output signal of the VHF modulator 7, that is, the monitor camera 6 is connected.
Is input to the television 14 through the co-listening equipment of the television and the multiple adapter 20. At this time, in the call destination room (for example, room 201), the signal from the intercom 5 is connected to the telephone set 15 in room 201 through the private branch exchange 13, so that the detection circuit 30 of the multiple adapter 20 installed in room 201 Frequency conversion circuit 4
The signal is output to 0. As a result, the frequency conversion circuit 40
Is activated, the output signal of the VHF modulator 7 is UHF.
Frequency of output signal of modulator 10 (471 MH
z) is converted into a signal having the same frequency. Therefore, the resident in the room 201 who recognizes that the ringing tone of the telephone set 15 is not the outside line but the ringing tone of the intercom 5 (A in FIG. 3), can turn on the television 14 and press the selection number 11, or another When watching a television program, simply changing the selection number to 11 allows the visitor information to be visually obtained through a color television for home use. At the same time, visitor information can be auditorily obtained through the telephone set 15. Then, by inputting a specific personal identification number from the telephone 15, the door of the collective entrance can be opened. In addition, just calling from the intercom 5 causes VHF
Since the output signal of the modulator 7 is converted to the frequency of 471 MHz, the occupant of the room 201 can obtain the information of the visitor on the television 14 without taking the receiver. Therefore, for example, in the case of a suspicious partner, it is possible to leave the house as it is. Also, when the answering machine is being used, the answering machine can be answered as it is.

On the other hand, in the rooms other than the call destination room (room 201), no signal is output from the detection circuit 30 of the multiple adapters 20 installed in those rooms to the frequency conversion circuit 40, and the frequency conversion circuit 40 is VHF because it doesn't work
The output signal of the modulator 7 is directly input to the television without being converted. Therefore, even if a resident of a room other than the called room (room No. 201) selects the selection number 11 and watches the TV, the frequency is different and the TV is not displayed. Therefore, it is not possible to obtain information about visitors.

After that, when the resident of the room 201 hangs up the handset, the visitor pushes the cancel switch 5b of the intercom 5, or one minute elapses after the call switch 5a is pushed, the signal changeover switch 12 returns to its original state. Back to amplifier 8
Since it is connected to the output terminal of, it will be in the normal state.

In this embodiment, the UHF band and VHF are used.
V for the co-listening equipment of the TV which consists of the receiving antenna 1 etc. for the band
HF modulator 7 or UHF modulator 1
Although the output signal of 0 is mixed and distributed to each room, as shown in FIG. 5, a television sent from a center 101 of a cable television (CATV) by a cable 102 such as a coaxial cable or an optical fiber cable. The output signal of the VHF modulator 7 or the UHF modulator 10 may be mixed with the co-listening equipment of the television that distributes the signal to each room and distributed to each room.

Further, in the present embodiment, the video signal of the monitor camera 6 is modulated to the frequency for the midband channel between the 3rd channel and the 4th channel of the VHF band via the VHF modulator 7, but instead of this, the monitor is performed. The video signal of the camera 6 is VHF band 12 channels and UH
Super high band between F13 channels (222MH
z to 470 MHz). This is because the super high band, like the mid band, is not usually used as a TV channel frequency.

[0030]

As described above, according to the television monitoring apparatus of the present invention, since the image of the visitor by the monitor camera installed at the common entrance of the apartment house is displayed on the home television in the called room, it is particularly preferable. Since it is not necessary to provide a dedicated monitor TV for each room, costs can be reduced and space can be saved. Moreover, it can be seen in color on a large screen compared to conventional monitor TVs. Further, at the same time, there is no need to provide a dedicated indoor intercom, and it can be used as a home telephone, which is effective. Further, since the video signal from the monitor camera is sent to the TV through the co-listening equipment of the TV installed in the housing complex, it is not necessary to provide a dedicated connection wiring connecting the monitor camera and the TV in each room. Therefore, the cost can be reduced, and the workability at the time of mounting the television monitoring device of the present invention in an apartment house is also improved.

Further, since the image of the visitor is not displayed on the televisions in the rooms other than the callee's room, there is no fear of seeing the visitor's face by others. Also, since the resident of the called room can get the information of the visitor on the TV without taking the handset,
For example, when a suspicious partner is available, he / she can be left as it is, and when he / she is an answering machine, he / she can be made to answer the answering machine as it is. Therefore, it is excellent in safety.

[0032]

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a television monitoring device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a schematic configuration of a multiple adapter 20 shown in FIG.

3 is a timing chart showing signals at points A to E shown in FIG.

FIG. 4 is a timing chart showing signals at points E to G shown in FIG.

FIG. 5 is a block diagram showing a schematic configuration of a television monitoring device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Receiving Antenna 3 Mixer 4 Distributor 5 Intercom 6 Monitor Camera 7 VHF Modulator 9 Frame Memory 10 UHF Modulator 12 Signal Changeover Switch 13 Private Branch Exchange 14 Television 15 Telephone Terminal 18 Telephone Terminal 20 Television Terminal 20 Multiple Adapter 30 Detection Circuit 40 Frequency Conversion circuit 102 Wired

Claims (4)

[Claims] 1. An intercom and a monitor camera are installed at a common entrance of an apartment house which has a television co-listening facility for distributing a television signal from a receiving antenna or a cable to each room, and the visitor's information is called in the room. In a television monitoring device for transmitting to a TV, a VHF modulating means for modulating the video signal of the monitor camera to a frequency for a mid band channel between the 3rd and 4th VHF bands and outputting it, a memory means in which a predetermined image is stored in advance. A second modulating means for modulating the image signal stored in the memory means to a predetermined frequency for an empty channel and outputting the same, and normally connecting the second modulating means to the output signal for input to the co-listening equipment of the television. , Signal switching means for switching the connection at the time of calling and connecting to the VHF modulation means to input an output signal to the co-listening equipment of the television, A private branch exchange that connects to the telephone installed in the called room, whichever is used, whichever of the signal line and the outside line of the intercom, is inserted between the private branch exchange and the telephone in each room and connected to the telephone. A detection means for detecting whether the established line is an intercom signal line or an outside line, and outputting a corresponding signal if the intercom signal line is provided, and a detecting means inserted between the co-listening equipment of the television and the television in each room. When a signal is output from the detection means, the output signal of the VHF modulation means input to the television in the called room is
A television monitoring apparatus comprising: frequency conversion means for converting a frequency for a predetermined empty channel modulated by the second modulation means. 2. The detection means is inserted between a telephone terminal pre-wired in each room and a telephone in each room, and the frequency conversion means is TV terminal pre-wired in each room and each room. 2. The television monitoring device according to claim 1, wherein the television monitor is installed between the television and the television, and the detecting means and the frequency converting means are installed in each room. 3. The television monitoring apparatus according to claim 2, wherein the detection means and the frequency conversion means are integrated. 4. The VHF modulating means modulates the video signal of the monitor camera to a frequency for a mid band channel between the 3rd and 4th channels of the VHF band, and replaces the video signal of the monitor camera with 12 channels of the VHF band. 4. The television monitoring apparatus according to claim 1, wherein the television monitoring apparatus modulates to a frequency for a super high band channel between the UHF and UHF 13 channels and outputs it to the co-listening equipment of the television.