Method for managing digital slow shutter mode in monitor camera

Details Method for managing digital slow shutter mode in monitor camera Method for managing digital slow shutter mode in monitor camera

2004-08-20

2009-08-25

Tran, Nhan T (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S363000, C348S229100, C348S296000

Reexamination Certificate

active

07580067

ABSTRACT:
Disclosed is a method for managing a DSS (Digital Slow Shutter) mode in a monitoring camera. When an iris of the monitoring camera is maximally opened and a shutter speed is minimum, the DSS mode is set. In the DSS mode, a video frame inputted in a predetermined cycle is stored in a memory. A plurality of video frames stored in the memory are synthesized into a monitoring video frame. The monitoring video frame is outputted irrespective of a luminance thereof. When the memory is full of the video frames, an oldest stored video frame is replaced with a newly inputted video frame. The monitoring video frame can be consecutively outputted in a predetermined cycle even though the monitoring camera operates in the DSS mode. The monitoring video frame based on a bright luminance level can be outputted, such that a monitoring function is enhanced.

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Lagendijk, “Handbook of Image and Video Processing, Video Enhancement and Restoration, Spatiotemporal Noise Filtering,” XP-002382870, Acedemic Press, 2000, pp. 227-230, 241.

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