Scan conversion apparatus

Details Scan conversion apparatus Scan conversion apparatus

2005-08-16

2005-08-16

Natnael, Paulos M. (Department: 2614)

Television

Format conversion

Line doublers type

C348S452000, C348S458000, C348S459000

Reexamination Certificate

active

06930728

ABSTRACT:
An apparatus and a method for converting image signals from an interlaced scanning format to a progressive scanning format are disclosed. Additionally, an apparatus and a method for changing a vertical scanning rate of progressively scanned image signals are also disclosed. Field motion estimator estimates field motions between a current field and reference fields to find an optimal reference field. Then a field motion compensator restores a missing line of the current field using information given from the optimal reference if the optimal reference field unevenly matches to the current field. Otherwise, a linear interpolator restores the missing line of the current field by linearly interpolating lines located adjacent to the missing line in the current field. Furthermore, a frame motion estimator estimates frame motions between adjacent frames using the progressively scanned image signals and field motions estimated in the field motions estimator. Finally, a frame motion compensator provides a new composite image between the adjacent frames using the frame motions estimated.

REFERENCES:
patent: 5363146 (1994-11-01), Saunders et al.
patent: 5412435 (1995-05-01), Nakajima
patent: 5428397 (1995-06-01), Lee et al.
patent: 5430490 (1995-07-01), Rim
patent: 5453799 (1995-09-01), Yang et al.
patent: 5619272 (1997-04-01), Salmon et al.
patent: 5638139 (1997-06-01), Clatanoff et al.
patent: 5661525 (1997-08-01), Kovacevic et al.
patent: 5687097 (1997-11-01), Mizusawa
patent: 5689305 (1997-11-01), Ng et al.
patent: 5790208 (1998-08-01), Kwak et al.
patent: 5936676 (1999-08-01), Ledinh et al.
patent: 5995154 (1999-11-01), Heimburger
patent: 6034734 (2000-03-01), De Haan et al.
patent: 6108039 (2000-08-01), Linzer et al.
patent: 6151075 (2000-11-01), Shin et al.
patent: 6192080 (2001-02-01), Sun et al.
patent: 6219103 (2001-04-01), Sugiyama
patent: 6509930 (2003-01-01), Hirano et al.
patent: 6526096 (2003-02-01), Lainema et al.
patent: 6545719 (2003-04-01), Topper
patent: 6606126 (2003-08-01), Lim et al.
patent: 6614484 (2003-09-01), Lim et al.
patent: 6618094 (2003-09-01), De Haan et al.
patent: 6618439 (2003-09-01), Kuo et al.
patent: 1999-25249 (1999-04-01), None
U.S. Appl. No. 08/934,307, filed May 2002,Lainema et al.

Affiliated with

Also associated with

Rating

Scan conversion apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scan conversion apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scan conversion apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3524079