JPS63217886A - Video interrupting device - Google Patents

Abstract

PURPOSE:To return to an operation mode before interruption is applied, after an interrupting operation is ended, by providing a means for storing an operating state of a television receiver, and returning an operating state of the television receiver to the storage contents at the time of inputting a trigger signal, after the interrupting operation is ended. CONSTITUTION:In a controller 25 of a video interrupting device 7, a resending code of a code resending part 25e is inputted to a mode storage part 25c and a channel storage part 25d, and it is stored therein that a television receiver is receiving a broadcast of a specific channel by ON operation of a power source at present. When the time set by a time setting device 26 is counted up by a timer circuit 25g, a mode before interruption is applied and a control signal of a channel number are sent to the code resending part 25e from the mode storage part 25d and the channel storage part 25d. In such a way, by the code sent out of the code resending part 25e, the television receiver is returned to an operating state before interruption is applied.

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, in addition to installing an intercom between the entrance and the room, a monitor camera is installed at a position where it can capture images of the state of the entrance, and the captured image is input to a television receiver. A system has been proposed in which, when a button on an intercom is pressed, a television receiver is operated to display an image captured by a monitor camera, the image is visually checked, and depending on the result, a call is made or not made using the intercom. ing.

However, this system has the problem of requiring a special operation to playback the image captured by the monitor TV on the TV receiver, and when the button on the intercom is pressed, it is used as a trigger signal. A system that automatically or forcibly switches the television receiver to display images captured by a monitor camera is conceivable.

However, this system forcibly switches the TV receiver that is currently working or not working to the monitor camera, so after visually checking the image captured by the monitor camera and finishing the response, the operator can switch the TV receiver again. An operation is required to return the receiver to its original state.

[Purpose of the invention]

An object of the present invention is to enable, even if a television receiver is forcibly interrupted by a video interruption due to the operation of an external device such as an intercom, to be able to return to the operating mode before the interruption after the interruption operation is completed. be.

[Structure of the invention]

The video 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 a video from a monitor camera paired with the external device to the television receiver for a predetermined period of time. The apparatus is equipped with means for storing the operating state of the television receiver, and is configured to restore the operating state of the television receiver to the stored content at the time of inputting the trigger signal after the interrupt operation is completed. .

〔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 is equipped with 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. The push button operation signals of the intercoms 1 and 2 and the detection signal of the infrared sensor 3 are input separately to the video interrupt device 7 as trigger signals, 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, the UHF output terminal 12 of this VTR 12
c is the UHF antenna input terminal 14a of the television receiver 14
and the VHF output terminal 12d is connected to the television receiver 14.
is connected to the VHF antenna input terminal 14b. 1
5 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 7 is sent to an attachment 17 having a light emitting element attached to the tip of the cord 16.
By connecting the code to the light receiving section 12e of the VTR 12, the control signal for the television receiver 14 can be sent to another code 18.
This is done by joining an attachment 19 having a light emitting element attached to the tip of the television receiver 14 to the light receiving section 13b of the television receiver 14. These attachments 17 and 19 are attached 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
In addition, an interrupt time setter 26 that sets the interrupt continuation (display) time, and a television receiver 14 that sets each modulated UHF frequency channel assigned to the modulation mixers 8 to 10 described above.
A channel position setting device 27 for setting an empty channel to a vacant channel, a VTR light emitting interface 2B for driving the light emitting element of the attachment 17.19 mentioned above with a predetermined code, and a TV light emitting interface 29 setting the controller 25 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 has an internal calculation section 25a,
ROM25b storing system program, VTR1
2 and the operation mode of the television receiver 14 (power on/off,
Control input from the remote control transmitter 15 via the mode storage section 25C1VRT12 that stores information (TV/video/text broadcasting, recording/playback, etc.), the channel storage section 25d that stores the reception channel number of the television receiver 14, and the photoamplifier 33. Re-code the TV receiver 14 or VTR
12 to the interfaces 28 and 29 for control, as well as the mode storage section 25C and channel storage section 25C.
A remote control code retransmission unit 25e that changes the control signal from etc. into a remote control code and sends it out, an interrupt duration set by a time setting device 26, and a channel position setting device 27.
A RAM 25f for storing the channel number, etc., for distributing camera images set in , and a timer circuit 25g for counting the duration of the interrupt from the start of the interrupt, etc. are provided.

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 5B to Acchimen) 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 25e is the mode storage section 25C.
The information is input to the channel storage section 25d, and it is stored therein that the television receiver 14 is currently receiving a broadcast of a specific channel with the power turned on. The same applies when the remote control transmitter 15 is used to set the VTR 12 to playback or record.

Next, in such a state, if the at-home switch 30 of the video interrupt device 7 is turned on, when the intercom 1 at the entrance is operated, an operation signal will arrive at the entrance trigger input terminal 21. When a video interrupt occurs, the modulation UHF channel of the modulation mixer 8 corresponding to the entrance camera 4 is read out from the RAM 25f and sent to the code retransmission unit 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, the television receiver 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 timer circuit 25g counts up the time set by the time setter 26, the mode and channel number control signals before the interrupt are sent to the code retransmission unit 25e from the mode storage unit 25c and channel storage unit 25d.
The code sent from the code retransmission section 25e causes the television receiver 14 to return to the operating state before the interruption.

Such an interrupt operation is performed even when the VTR 12 is recording/replaying or when the TV receiver @ 14 or the 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 14 has a built-in controller (microcomputer) that can set timers 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 is different from the power state stored in the mode storage unit 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 25e sends a power-on signal and a trigger signal to the VTR 12. Channel selection signal assigned to the camera corresponding to the intercom or infrared sensor that generated the VTRTR
A code indicating the recording on signal 1 is generated successively, and these are photoelectrically converted by the attachment 17 and input to the light receiving section 12e of the VTR 12. 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 unit 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 12e2 of R12 Light receiving section 14 of TV 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 occurs due to a signal from an interphone or a sensor, once the operation is completed, the state before the interrupt is restored, which is extremely convenient.

[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

Claims (2)

[Claims] (1) A video interrupt device that interrupts and controls a television receiver in response to a trigger input from an external device such as an intercom or security sensor, and displays images from a monitor camera paired with the external device on the television receiver for a predetermined period of time. characterized in that it comprises means for storing the operating state of the television receiver, and is configured to restore the operating state of the television receiver to the stored content at the time of inputting the trigger signal after the interrupt operation is completed. Video interrupt device. (2) The storage means is configured to turn on/off the power of the television receiver.
2. The video interrupt device according to claim 1, further comprising means for storing information such as off, operation mode, and selected channel.