JPH03195287A - Still picture video telephone set - Google Patents

Abstract

PURPOSE:To apply a still picture video telephone set for monitor application or the like by storing a picture data outputted from a camera section to a transmission picture storage memory for each prescribed time and sending the data for each prescribed time. CONSTITUTION:A timer circuit 10 commands the fetch and transmission of a pickup data from a camera section 1 automatically without operating an operation switch 8 commanding the transmission by the operator. Every time a preset time elapses, a tentative fixed storage of a pickup data from a camera 1 to a camera input frame memory 3 and the storage of the data to a transmission picture storage memory 9 are commanded to a common control section 7. Moreover, when a preset picture transmission time is reached, the transmission of a still picture data by plural pictures stored newly after the preceding transmission to the transmission picture storage memory 9 is commanded to a common control section 7. When a transmission command from a timer circuit 10 is received, the still picture data by plural pictures stored newly after the preceding transmission at that point of time in the transmission picture storage memory 9 is read sequentially and sent to a communication line via the transmission control section 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a still picture video telephone device, and more particularly to a still picture video telephone device applied to monitoring purposes.

[Conventional technology]

A conventional still image videophone device temporarily stores image data from a camera unit as a still image on a frame memory for camera input by operating a button or the like by the operator, and when transmitting, image data is sequentially stored from the frame memory for manual input of the camera. The image data was read out, modulated into a transmission signal format, and sent to the communication line.

The conventional still picture video telephone device will be further explained with reference to FIG.

The video signal from the camera 1 is input to the camera input frame memory 3 and sequentially stored. Normally, the information is sequentially rewritten and updated with a new video signal input from the camera 1 every frame. At the same time, the contents of the camera input frame memory 3 are sequentially read out in synchronization with the screen display timing of the display section 2 to generate a video signal. This video signal is sent to the display section 2 via the switch 6. As described above, the input image signal from the camera 1 is normally displayed on the display section 2 as a moving image.

On the other hand, when the operator operates the operation switch 8 that instructs image transmission, the common control unit 7 stops writing the video signal from the camera 1 to the camera input frame memory 3, and the operation switch 8 is turned off. The input image from the camera 1 at the time of operation is fixedly stored in the camera input frame memory 3 as still image data. Thereafter, the still image data stored in the camera input frame memory 3 is sequentially read out in synchronization with the transmission speed to the communication line, and the transmission control unit 5 modulates it into a transmission signal format and sends it out to the communication line.

Further, when still image data is received from the other party's still 1F picture video telephone device via the communication line, the transmission control section 5 demodulates the still image data and stores it in the received image storage memory 4. The data stored in the received image storage memory 4 is sequentially read out in synchronization with the display timing of the display section 2, converted into a video signal, and displayed on the display section 2 via the switch 6.

[Problem to be solved by the invention]

In the above-mentioned conventional still image videophone device, the capture and transmission of image information to be transmitted is instructed by the operator's operation of buttons, etc., so it is difficult to capture and transmit image data unattended. The still image videophone device could no longer be applied to such applications.

[Means to solve the problem]

The still image videophone device of the present invention is a still image videophone device that transmits still image data obtained by capturing an image with a camera and displays the received still image data on a display unit, and the still image videophone device transmits still image data obtained by capturing an image with a camera and displays the received still image data on a display unit. A transmission image storage memory that stores a plurality of still image data to be output, and the amount of change between the still image data already stored in the transmission image storage memory and the image data output from the camera to be newly stored. an image data change amount detection unit to be measured; a timer circuit that generates a command to store the image data in the transmission image storage memory; and a command to transmit the still image data stored in the transmission image storage memory; and a control section that prohibits storage of the image data in the transmission image storage memory based on the detection result of the amount detection section.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

This embodiment is constructed by adding a transmission image storage memory 9 for storing still image data for a plurality of sides, an image data change amount detection section 11, and a timer circuit 10 to the conventional example shown in FIG.

The timer circuit 10 automatically activates the camera unit 1 without the operator operating the operation switch 8 that instructs transmission.
This command instructs the acquisition and transmission of image data from the . Every time a preset period of time elapses, image data from the camera 1 is temporarily fixedly stored in the camera input frame memory 3, and the data is transmitted to the image storage memory 9.
The common control unit 7 is instructed to store the information in the file. Furthermore, when the preset image transmission time comes, the common control unit 7 is instructed to transmit still image data for a plurality of double sides newly stored in the transmission image storage memory 9 since the previous transmission.

The image data change amount detection unit 11 detects the camera 1 which has been temporarily fixedly stored as a still image in the camera input frame memory 3 in order to newly accumulate it in the transmission image storage memory 9.
This is to measure the amount of change between the captured data and the still image data already stored in the transmission image storage memory 9.
If the amount of change in the image data is less than a predetermined reference value, it is determined that new storage in the transmission image storage memory 9 is unnecessary, and a command to stop the storage is sent to the common control unit 7.

The common control unit 7 temporarily and fixedly stores the image data from the camera 1 in the camera input frame memory 3 according to the image data accumulation command from the timer circuit 10.
If there is no command from the image data change amount detection unit 1-1 to stop the accumulation in the transmission image storage memory 9, the still image data temporarily fixedly stored in the camera input frame memory 3 is stored in the transmission image storage memory 9. Then, reading of image data from the camera 1 into the camera input frame memory 3 is started again.

Further, when receiving a transmission command from the timer circuit 10, the transmission image storage unit 10 sequentially reads still image data for multiple double sides newly stored in the memory 9 after the previous transmission at that point, and sends the still image data to the communication line via the transmission control unit 5. to be sent to.

〔Effect of the invention〕

As explained above, the present invention stores the image data output from the camera unit in the transmission image storage memory at fixed time intervals, and transmits it at fixed time intervals, thereby making the still image video telephone device suitable for monitoring purposes, etc. In addition, image data from the camera section can be taken into the transmission image storage memory only when there is a change in the monitored object, and an effective monitoring system can be realized.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of an example of a conventional still picture video telephone device. Camera, 2... Display unit, 3... 71/-me memory for camera input, 4... Received image storage memory, 5...
・Transmission control section, 6.. Switching device, 7.. Common control section, 8.
・Operation switch, 9... Transmission image storage memory, 10...
-Timer circuit, 11...image data change amount detection section.

Claims (1)

[Claims] In a still image video telephone device that transmits still image data obtained by imaging with a camera and displays the received still image data on a display unit, a plurality of image data outputted by the camera are stored as the still image data to be transmitted. an image data change amount detection unit that measures the amount of change between the still image data already stored in the transmission image storage memory and the image data outputted by the camera in an attempt to be newly stored; a timer circuit that generates a command to store the image data in the transmission image storage memory and a command to transmit the still image data stored in the transmission image storage memory; 1. A still image videophone apparatus, comprising: a control section that prohibits storage of the image data in an image storage memory.