TELEVISION DEVICE TO DETECT MOVEMENT OF OBJECTS Russian patent published in 1999 - IPC

FIELD: burglar alarm systems with use of TV cameras. SUBSTANCE: proposed TV device includes TV camera 1, synchronization unit 2, processing unit 3, analog-to-digital converter 4, storages 5, 8, control units 6, 9, comparators 7, 12, shift register 10, majority unit 11, time relay 13, register 14. Monitored zone of space is divided on image into m x n sections, where m and n are numbers of sections on image along horizontal and vertical lines correspondingly. Appearance or movement of object in observation zone is detected by way of registration of change of image by results of analysis of change of voltages in time, where is average value of video signal on i-th section. Detection is carried out in cyclically repeated time intervals. EFFECT: high resolution power, increased reliability of detection of movement of low-contrast and small-sized objects in monitored zone which enhances efficiency of security service. 1 cl, 8 dwg