JPS63217889A - Video interrupting device - Google Patents

Abstract

PURPOSE:To surely return the titled device to the previous operation mode after interruption is ended, by providing a means for storing an operating state of a television receiver and a control part for monitoring a power source state of the television receiver, and storing a power source ON/OFF signal as power source information. CONSTITUTION:By using a controller 34, a power source state of a television receiver and a timer setting state are always monitored, and this monitor contents are stored in a mode storage part 25c. When an interphone is operated, a video interruption is applied, the television receiver receives a remote control light of this signal from an attachment 19 and switches a channel, and an image which is brought to an image pickup by a monitor camera of the entrance is reflected. When the time which is set by a time setting device 26 is counted up by a timer circuit 25g, a mode before interruption and a control signal of a channel number are sent to a code resending part 25e from a mode storage part 25c and a channel storage part 25d, and by a code send out of its code resending part 25e, the television receiver 14 is returned to an operating state before the interruption.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for providing a video interrupt to a television receiver.

[Prior art]

As a home security system, we not only install an intercom between the entrance and the room, but also install a monitor camera in a position where it can capture the state of the entrance, and input the captured image to a TV receiver. A system has been proposed in which, when pressed, a television receiver is operated to display an image taken by a monitor camera, the image is visually recognized, and depending on the result, a conversation is made or not made using an intercom.

However, this system has a problem in that it is necessary to perform special operations in order to reproduce images captured by a monitor television on a television receiver.

Therefore, a system can be considered in which when the intercom is operated, the operation signal is used as a trigger to automatically and forcibly switch the television receiver to display the image captured by the monitor camera.

However, even with such a system, since the TV receiver that is currently in operation or is not in operation is forcibly switched to the monitor camera, it is necessary to make sure that the switch is performed accurately and that the content captured by the monitor camera is After visually confirming and completing the response, the operator is required to return the television receiver to its original state again.

[Purpose of the invention]

An object of the present invention is to ensure that, when a video interrupt is forcibly applied to a television receiver by operating an external device such as an intercom, the interrupt is accurately performed, and after the interrupt is finished, the operation mode is reliably returned to the one before the interrupt. The goal is to be able to return.

[Structure of the invention]

The image interrupt device of the present invention interrupts and controls a television receiver upon receiving a trigger input from an external device such as an intercom or a security sensor, and transmits an image from a monitor camera paired with the external device to the television receiver for a predetermined period of time. A device that operates to display images and return to the original state after the elapse of the time period, the device having a means for storing an operating state of the television receiver, and a control unit for monitoring a power state of the television receiver,
The power on/off of the television receiver obtained by the control unit
The off signal is configured to be stored in the storage means as power information.

〔Example〕

Examples of the present invention will be described below. FIG. 1 is a diagram showing an outline of a home security system incorporating the video interrupt device of this embodiment.

This system includes an interphone 1 and a monitor camera 4 installed at the entrance, an interphone 2 and a monitor camera 5 installed at the back entrance, and an infrared sensor 3 and a monitor camera 6 installed in the garden. Then, the push button operation signal of the intercom 1.2 and the detection signal of the infrared sensor 3 are separately inputted as trigger signals to the video interrupt device 7, and the monitor cameras 4 to 6
The video signals from the are input to modulation mixers 8 to 10 where they are modulated at frequencies of different UHF channels and mixed with UHF signals input from other sources.
10 are connected to the cable from the UHF antenna 11 and input to the UHF antenna input terminal 12a of the VTR 12. Naturally, a VHF antenna 13 is connected to the VHF antenna input terminal 12b of this VTR 12. Then, t: (7) VTR 12 (7) UHF output terminal 12c is connected to UHF antenna input terminal 14a of television receiver 14, and VHF output terminal 12d is connected to VHF antenna input terminal 14b of television receiver 14. . 15 is a remote control transmitter for controlling the VTR 12 and the television receiver 14 via the video interrupt device 7. The control signal for the VTR 12 from the video interrupt device wt.7 is transmitted by connecting an attachment 17 having a light emitting element attached to the tip of the cord 16 to the light receiving section 12e of the VTR 12, and the control signal for the television receiver 14 is transmitted by another cord. This is done by joining an attachment 19 having a light emitting element attached to the tip of the attachment 18 to the light receiving section 13b of the television receiver 14. These attachments 1
7.19 is installed so that the remote control optical signal from the remote control transmitter 15 is not input to the light receiving sections 12e and 14c.

FIG. 2 is a diagram showing internal blocks of the video interrupt device 7 described above. 21 is the entrance trigger input terminal for inputting the push button operation signal of the intercom 1, and 22 is the intercom 2.
Backdoor trigger input terminal for inputting push button operation signals,
23 is a garden trigger input terminal into which a detection signal from the garden infrared sensor 3 is input, and each of these input terminals 21 to 2
The signal input to the controller 3 is converted to a predetermined logic level by the interface 24 and input to the controller 25 .

This controller 25 includes the interface 24
Besides, interrupt relay! (Display) The interrupt time setter 26 sets the time, and each variable mUHF frequency channel assigned to the modulation mixer 8 to IO described above is transmitted to the television receiver 14.
A channel position setting device 27 for setting a vacant channel in the above-mentioned attachment 17.19, a VTR light emitting interface 28 for driving the light emitting element of the attachment 19 with a predetermined code, a TV light emitting interface 29, and a controller 25 are set to the at-home interrupt mode. an at-home interrupt switch 30 for setting the absentee interrupt mode, an interrupt prohibition switch 32 for disabling interrupts, a photoamplifier 33 for receiving the emitted light from the remote control transmitter 15, photoelectrically converting it, and decoding the code; A controller 34 having the same function as a controller for timer control built in the television receiver 14 is connected.

This controller 25 internally stores an arithmetic unit 25a, a ROM 25b storing system programs, and operation modes (power on/off, TV/video/text broadcasting, recording/playback, etc.) of the VTR 12 and the television receiver 14. Mode storage unit 25C1VRT12 and television receiver 14
channel storage unit 25 that stores the reception channel number of
d. The control code input from the remote control transmitter 15 via the photoamplifier 33 is sent to the television receiver 14 or VTR 12 again.
A remote control code retransmission unit 256 sends the control signals to the interfaces 28 and 29 for control, as well as changing control signals from the mode storage unit 25c, channel storage unit 25c, etc. into remote control codes, and interrupt continuation set by the time setting device 26. It is equipped with a RAM 25f for storing channel numbers and the like for the distribution of camera images set by the time and channel position setter 27, and a timer circuit 25g for counting the duration of the interrupt from the start of the interrupt.

Now, when a predetermined operation is performed using the remote control transmitter 15, such as turning on the television receiver 14 or selecting a specific channel, a code corresponding to the operation is decoded and output by the photoamplifier 33 of the video interrupt device 7, and the code is output. Retransmission section 2
The light is sent from 5e to the attachment 19, and the light emitting element there emits remote control light. This emitted light is photoelectrically converted by the light receiving section 14c of the television receiver 14, and the code is decoded.
When the television receiver 14 is turned on, the specific channel is selected.

At this time, in the controller 25 of the video interrupt device 7,
The retransmission code of the code retransmission section 2513 is stored in the mode storage section 25.
C and the channel storage section 25d, where it is stored that the television receiver 14 is currently receiving a broadcast of a specific channel with the power turned on. Remote control transmitter 15
The same thing applies when regeneration or recording of the VTR 12 is set.

Next, in such a state, if the at-home switch 30 of the video interrupt device 7 is turned on, when the intercom l at the entrance is operated, an operation signal will arrive at the entrance trigger input terminal 21. When a video interrupt occurs, the modulation mixer 8 corresponding to the camera 4 at the entrance changes 1! The UHF channel is read out from the RAM 25f and sent to the code retransmission section 25e.
The code of that channel is sent to the TV light emitting interface 29, and a control signal for selecting the channel is sent from there to the TV light emitting interface 29. Therefore, TV reception I! 14 receives the remote control light of this signal from the attachment 19, switches the channel, and displays the image captured by the monitor camera 4 at the entrance. When the time set by the time setter 26 is counted up by the timer circuit 25g, control signals for the mode and channel number before the interrupt are sent to the code retransmission unit 25 from the mode storage unit 25C and the channel storage unit 25d.
The code sent from the code retransmission section 25e returns the television receiver 14 to the operating state before the interruption.

Such an interrupt operation is performed even when the VTR 12 is recording/reproducing or when the television receiver 14 or VTR 12 is powered off (during preheating), and when the interrupt operation is completed, the original state is restored. Also, if the push button of the intercom 2 at the back door is operated, the video captured by the monitor camera 5 there will be interrupted and played back on the television receiver 14 for a predetermined period of time, and if the infrared sensor 3 in the garden detects it, the camera 6 there The video imaged by the TV receiver 14 is interrupted and played back for a predetermined period of time. A flowchart of this at-home interrupt operation is shown in FIG.

By the way, the television receiver 4114 has a built-in controller (microcomputer) that allows timer settings such as clock time setting, power-on time setting, power-off time setting, etc. In some cases, the power is turned on/off independently by the operation of the controller, and in this case, the power state may be different from the power state stored in the mode storage section 25c of the controller 25 of the video interrupt device 7. There are cases where the television receiver 14 cannot be turned on even if an interrupt occurs.

This occurs when the power switch is toggled by a power on/off remote control signal.

Therefore, in this embodiment, a controller 34 that performs the same function as the controller (microcomputer) used inside the television receiver 14 is used to constantly monitor (or simulate) the power status and timer setting status of the television receiver 14. ) This monitor content is stored in the mode storage section 25C. Therefore, the current operating mode of the television receiver 14 is always accurately stored in the mode storage unit 25C, so that interrupts and returns can be performed accurately.

Next, when the absence interruption switch 31 of the video interruption device 7 is turned on, a trigger signal from the intercom 1.2 or the infrared sensor 3 arrives, and the code retransmission section 256 sends a power-on signal and a trigger signal to the VTR 12. A code indicating a channel selection signal assigned to the camera corresponding to the intercom or infrared sensor that generated this, a VTR recording on signal, etc. is generated successively, and these are photoelectrically converted by the attachment 17 and sent to the light receiving section 1 of the VTR 12.
Enter in 2e. Therefore, the VTR 12 starts operating in the recording mode of the channel and records the image captured by the camera. When the time set by the time setter 26 has elapsed, a stop signal and a power off signal are sent from the same code retransmission section 25e+, and the interruption recording of the VTR 12 is completed. Note that when turning on the absent interrupt switch 31 of the video interrupt device 7, it is necessary to load the tape into the VTR 12 and turn on the preheat power source at the same time. FIG. 4 shows a flowchart of this absentee interrupt operation.

Next, when the interrupt prohibition switch 32 of the video interrupt device 7 is turned on, the controller 25
3, and even if the push button of the intercom 1.2 is operated or the infrared sensor 3 in the garden detects it, the video will not be interrupted and the TV receiver 14 or VTR 12 will not be able to receive the trigger signal. continues to operate.

In the above description, the attachments 17 and 19 that send remote control optical signals to the VTR 12 and television receiver 14 are equipped with light-emitting elements, but this light-emitting element is provided in the video interrupt device 7 and is transmitted from there via an optical fiber. , V.T.
Light receiving section 128 of R12, light receiving section 14 of television receiver 14
The remote control optical signal can also be transmitted to C.

〔Effect of the invention〕

As described above, according to the present invention, even if a video interrupt is caused by an external device such as an interphone, once the operation is completed, the state before the interrupt is restored.

In addition, even if the TV receiver has a built-in timer control unit, the power status of the TV receiver can be accurately monitored at all times, so it is possible to display the video due to the above interrupt or return to the original state after the interrupt ends. You will be able to do it with certainty.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the use of the video interrupt device of the present invention, FIG. 2 is an internal block diagram of the device, FIG. 3 is a flow chart of the at-home interrupt operation, and FIG. 4 is a flow chart of the absentee interrupt operation. Agent Patent Attorney Tsune Akira Nagao Works from home at 9pm

Claims (2)

[Claims] (1) Upon receiving a trigger input from an external device such as an intercom or a security sensor, interrupt control is performed on the television receiver, and the image from the monitor camera paired with the external device is displayed on the television receiver for a predetermined period of time, and the time elapses. A video interrupt device that operates so as to later return to its original state, the video interrupt device comprising: means for storing an operating state of the television receiver; and a control section that monitors a power state of the television receiver; A video interrupt device characterized in that the power on/off signal of the television receiver obtained by the above is stored in the storage means as power information. (2) The video interrupt device according to claim 1, wherein the control section has the same function as a timer control section built in the television receiver.