Auto-exposure power-saving device

Details Auto-exposure power-saving device Auto-exposure power-saving device

2006-07-11

2006-07-11

Ho, Tuan (Department: 2612)

Television

Camera, system and detail

Optics

C348S372000

Reexamination Certificate

active

07075577

ABSTRACT:
The present invention provides an auto-exposure power-saving device, which comprises an image brightness calculation unit for calculating the brightness value of an image. A maximal tolerable brightness value and a minimal tolerable brightness value both set by a CPU of a digital still camera (DSC) are inputted to a first comparator and a second comparator. The first comparator is used to compare the image brightness value with the maximal tolerable brightness value and then output a first comparison signal. The second comparator is used to compare the image brightness value with the minimal tolerable brightness value and then output a second comparison signal. The CPU is then activated or not according to the first or second comparison signals. The present invention has the power-saving advantage and a longer lifetime of use.

REFERENCES:
patent: 5734426 (1998-03-01), Dong
patent: 5793422 (1998-08-01), Mochizuki et al.
patent: 5825417 (1998-10-01), Yoshida
patent: 6630960 (2003-10-01), Takahashi et al.
patent: 2002/0067413 (2002-06-01), McNamara

Affiliated with

Also associated with

Rating

Auto-exposure power-saving device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Auto-exposure power-saving device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auto-exposure power-saving device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3581124