METHOD OF AND MEANS FOR EXTRACTING HEAT FROM A HOT FLUID CONTAINING FOREIGN MATERIAL THAT INTERFERES WITH HEAT TRANSFER

摘要

PURPOSE:To effectively and precisely monitor a video at need without providing a private line by accumulating a picture signal when the condition of the occurrence of abnormality, etc., is established, and sending it afterwards. CONSTITUTION:A system is started up, and the control part 16 of video transmission equipment 1 monitors input from a sensor 15, and when the input to inform, for example, the abnormality is issued from the sensor 15, the output of an A/D converter 12 is controlled so as to accumulate the picture signal relating to the output of a television camera 11 at that time in frame memory 13A, and also, write control on the frame memory 13A is performed, and simultaneously, a call is issued to video reception equipment 2 via a transmission line 3 by controlling a network interface 14. Therefore, the picture signal over one field of the video signal can be obtained and accumulated, for example, when the abnormality occurs, and it can be sent to a reception station afterwards. Thereby, it is not required to always form a speech path, and the video can be obtained at need without missing.