JPH05153591A - Picture transmitter - Google Patents

Abstract

PURPOSE:To obtain the picture transmitter with excellent convenience in which picture data at starting by a detection means are sent and the picture data at the starting are sent again after lapse of a prescribed time when the reception is disable by a receiver side. CONSTITUTION:A monitor area is provided with plural television cameras CM1, CM2, CM3, CM4 and a sensor 13. The television cameras CM1, CM2, CM3, CM4 are used for image pickup when the sensor 13 is started. A system controller 10 stores picture data at starting into a picture memory 15. The system controller 10 sends the picture data to the receiver side through a telephone line 8. The system controller 10 sends the data again after the lapse of a prescribed time when the receiver side is in talking. The system controller 10 sends picture data when a call comes from the receiver side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission device, and more particularly to an image transmission device capable of reliably transmitting the image data at the time of activation by the detection means to the receiving side when automatically transmitting the image in the monitoring area. Regarding the device.

[0002]

2. Description of the Related Art A generally known still image transmission device is
Multiple TV cameras (photographing means) and sensors (detection means) are provided in the monitoring area, and when the sensor detects an abnormality and starts up, first, the dial is automatically sent and the telephone line (transmission line) is connected. Then, still images taken by a plurality of TV cameras are sequentially transmitted through a telephone line, and new sensor input cannot be accepted until the transmission is completed.

[0003]

However, according to the above configuration, since the image data is transmitted after the telephone line is connected after the sensor is activated in the monitoring area, the sensor is activated in the monitoring area. The image data at the time point cannot be transmitted. Also, when the receiving side is in a call and unable to receive, the image data cannot be sent automatically and the image at that time does not remain, so the receiving side requests that the image data at that time be received again. However, there was a problem that it could not be sent.

The present invention has been made in order to solve the above-mentioned conventional technical problems, and it is possible to transmit the image data at the time of activation by the detection means, and further, when the receiving side cannot receive the data, It is an object of the present invention to provide an image transmission device with excellent convenience that can transmit the image data again after a lapse of time.

[0005]

According to another aspect of the present invention, there is provided an image transmitting apparatus, wherein a photographing means and a detecting means are provided in a monitoring area.
Upon activation of the detection means, the image taken by the imaging means is transmitted to the receiving side through the transmission path, and the storing means for storing the image data, the transmitting means for transmitting the image data to the receiving side, and the receiving side When the image data stored in the storage unit cannot be received, the image data stored in the storage unit is transmitted again to the receiving side after a predetermined time has passed.

In addition to the above, the image transmitting apparatus according to the invention of claim 2 further comprises a response transmitting means for calling and transmitting the image data stored in the storage means by calling from the outside.

[0007]

According to the image transmitting apparatus of the first aspect of the present invention, with the above configuration, the image data is stored and the stored image data is transmitted. Therefore, the image data at the time of activation by the detecting means can be transmitted to the receiving side. .. Further, since the image data at the time of activation can be transmitted again after the elapse of a predetermined time, the image data at the time of activation can be automatically transmitted even when the receiving side cannot receive such as during a call.

Further, according to the image transmission device of the second aspect of the invention, in addition to the above, it is possible to confirm and transmit the image data from the time of activation at any time by calling from outside.
It will be very convenient.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a block diagram of an electric circuit of a still image transmission device as an embodiment of the image transmission device of the present invention. CM1,
CM2, CM3, and CM4 are TV cameras as four image capturing means installed in the monitoring area. 1, 2, 3, 4
Is a video signal input terminal connected to each of the television cameras CM1 to CM4. Reference numeral 11 is a switching circuit for switching the connection of the input terminals 1 to 4 by a switching signal (SEL signal) from the system controller 10 described later. Reference numeral 13 denotes a sensor as a detection means provided in the monitoring area, which detects an abnormality (intrusion of a person or the like) in the monitoring area and outputs a signal to the system controller 10. The system controller 10 incorporates a microcomputer for processing various signals. When a signal is output from the sensor 13 to the system controller 10, a predetermined operation preset in the system controller 10, for example, the TV cameras CM1 to CM4 connected to the input terminals 1 to 4 are sequentially switched. And so on. Here, the operation button switch group 5 is connected to the system controller 10, and when the operation button switch group 5 has already been operated at the time of inputting a signal from the sensor 13, the system controller 10 operates according to the contents of the operation. Operate.

Reference numeral 14 denotes an A / connected to the switching circuit 11.
D converter, 6 is an image control circuit connected to the A / D converter 14, 15 is an image memory as a storage means connected to the image control circuit 6, and 12 is a D / connected to the image control circuit 6. A converter, 20 is the D /
The monitor is connected to the A converter 12 through the video output terminal 9, and the video signal from the switching circuit 11 is A /
Digital conversion is performed by the D converter 14, and this is written in the image memory 15 in accordance with a control signal from the image control circuit 6. Then, this image signal is analog-converted by the D / A converter 12 and supplied to the video output terminal 9. Since the monitor 20 is connected to the video output terminal 9, the image signal is displayed on the monitor 20.

Reference numeral 16 is a modulation / demodulation circuit connected to the system controller 10, 17 is a network controller unit (hereinafter referred to as NCU) connected to the modulation / demodulation circuit 16 and the system controller 10, 7 is an output terminal, and 8 is a transmission terminal. A telephone line as a line, 21 is a receiving side still image transmission device, and the image signal formed by the image control circuit 6 is supplied to a modulation / demodulation circuit 16 via a system controller 10 to be modulated / demodulated to obtain a still image signal. To form. The still image signal modulated and demodulated by the modulator / demodulator circuit 16 is led to the output terminal 7 via the NCU 17 and transmitted to the receiver side still image transmitter 21 via the telephone line 8 by the timing control signal from the system controller 10. To be done.

Next, 18 is the system controller 1
0 and the NCU 17 are connected to the incoming call detection circuit, and 19 is also a dial circuit connected to the system controller 10 and the NCU 17, and the dial circuit 19 sends a dial signal (selection signal) according to an instruction from the system controller 10 when dialing. Output via.
Further, the incoming call detection circuit 18 detects an incoming call when calling from the other party and outputs an incoming call detection signal to the system controller 10. The system controller 10 receives the incoming call detection signal from the incoming call detection circuit 18 and connects the line to the automatic incoming call mode. It is also possible to switch to the manual incoming call mode instead of the automatic incoming call mode. In the case of the manual incoming call mode, an LED is displayed to notify the incoming call, or a ringing sound is generated by a ringer or the like.

The operation of the still image transmission apparatus configured as described above will be described with reference to the flowchart shown in FIG. First, in step S1, the sensor 13 installed in the monitoring area is activated by detection of a person or the like to generate an output signal, and when this signal is input to the system controller 10, the television cameras CM1 to CM1 in step S2. CM
At 4, a person or the like in the surveillance area is photographed. Next, step S
The image data at the time of starting, which is photographed in 3, is once input and written in the image memory 15 via the image control circuit 6. Next, in step S4, the system controller 10
The dial circuit 19 outputs a dial signal to the receiving side, which is the other party of transmission, through the NCU 17 by outputting a dialing command to the dial circuit 19. This dial transmission is continued for a certain period of time.

Here, at the time of dialing to the receiving side, the presence or absence of the incoming call is detected by the incoming call detection circuit 18 at step S5. If the incoming call is detected within the predetermined time, at step S6. A still image is transmitted to the receiving-side still image transmission device 21 via the modulation / demodulation circuit 16 and the NCU 17,
The transmission ends in step S7.

On the other hand, in step S5, if the incoming call is not received and the incoming call is not detected because the receiving side is busy during the predetermined time, the telephone line 8 is temporarily disconnected in step S8.
Then, in step S9, the measurement for a fixed time is started.
This fixed time measurement is performed for a preset time by the timer function of the microcomputer incorporated in the system controller 10. After the elapse of a certain time in step S9, the process returns to step S4 again, the dial transmission to the receiving side is performed again, and this operation is repeated.

If there is a transmission command from the receiving side during this time, the system controller 10 responds to this by calling the image data from the image memory 15 and transmitting it to the receiving side. In step S4, the call is redialed, and if an incoming call is detected in step S5, a still image is transmitted to the receiving side in step S6 as described above.

The image transmission device described above is based on the sensor 1
Not only can the image data be automatically transmitted by the activation of No. 3, but also the image data can be transmitted by calling from either the transmitting side or the receiving side.

[0018]

As described above, according to the invention of claim 1,
Since the image data can be stored and the stored image data can be transmitted, it is possible to transmit the image data at the time when the detecting means reacts, and it is possible to significantly reduce the waiting time until the image data is transmitted to the receiving side. Further, since the image data at the time of activation can be transmitted again to the receiving side after the elapse of a predetermined time, the image data at the time of activation can be automatically transmitted even if the receiving side cannot receive the data such as during a call.

Further, according to the second aspect of the present invention, the image data can be confirmed and transmitted at any time by calling from the outside, so that the image transmission device having excellent convenience can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric circuit of an image transmission device showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the image transmission device of the present invention.

[Explanation of symbols]

 CM1 TV camera CM2 TV camera CM3 TV camera CM4 TV camera 6 Image control circuit 8 Telephone line 10 System controller 13 Sensor 15 Image memory 16 Modulation / demodulation circuit 17 Network controller unit 18 Incoming detection circuit 19 Dial circuit 20 Monitor

Claims (2)

[Claims] 1. An image transmission device for storing image data in a monitoring area, wherein an image pickup means and a detection means are provided, and an image photographed by the image pickup means is transmitted to a receiving side through a transmission path when the detection means is activated. A storage means, a transmission means for transmitting the image data to the reception side, and a retransmission means for transmitting the image data stored in the storage means to the reception side again after a lapse of a predetermined time when the reception side cannot receive the image data An image transmission device characterized by the above. 2. The image transmission apparatus according to claim 1, further comprising: a response transmission unit that calls and transmits the image data stored in the storage unit by calling from the outside.