Image signal processing apparatus for setting a noise...

Details Image signal processing apparatus for setting a noise... Image signal processing apparatus for setting a noise...

2005-01-21

2010-11-30

Tran, Nhan T (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S362000, C348S252000, C348S222100, C358S463000

Reexamination Certificate

active

07843498

ABSTRACT:
An image signal is input to two LPFs having different transmission characteristics. A selector chooses one of outputs of the respective LPFs and delivers the chosen output to a gamma correction circuit. The switching of the selector is controlled by a filter control circuit. In the filter control circuit, a comparator compares an exposure time E of a current frame with a threshold value R. The selector is controlled so as to select an output of one of the LPFs that has a lower cutoff frequency and a greater noise component elimination effect than the other LPF does if the exposure time E is longer than or equal to the threshold value R.

REFERENCES:
patent: 5506798 (1996-04-01), Shimada et al.
patent: 5818521 (1998-10-01), Hieda
patent: 6593970 (2003-07-01), Serizawa et al.
patent: 2002/0039142 (2002-04-01), Zhang
patent: 2003/0128282 (2003-07-01), Sudo
patent: 2005/0185071 (2005-08-01), Takahashi et al.
patent: A-11-112837 (1999-04-01), None
patent: A-2000-224472 (2000-08-01), None
patent: A-2001-094834 (2001-04-01), None
patent: A-2003-219210 (2003-07-01), None

Affiliated with

Also associated with

Rating

Image signal processing apparatus for setting a noise... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image signal processing apparatus for setting a noise..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image signal processing apparatus for setting a noise... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4206925