Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Reexamination Certificate
2007-07-18
2009-02-10
Sotomayor, John B (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
C342S195000
Reexamination Certificate
active
07489267
ABSTRACT:
A radar device is realized in which an object and extraneous waves such as radar interference or white noise are distinguished and displayed in different display forms. Subtraction Flag Generator6determines the time-wise continuity and the planar consecutiveness of target echo data. The time-wise continuity is an amount that indicates the extent to which significant echo data continued to be present at the same position, and is obtained from the echo data of a past predetermined number of sweep rotations. Planar consecutiveness indicates the extent to which significant echo data is present around target echo data, and is obtained by acquiring in a planar fashion echo data for each of predetermined amounts in a distance direction and a heading direction, centered around the target echo data. When Subtraction Flag Generator6detects that there is either of time-wise continuity and planar consecutiveness, Subtraction Flag Generator6attaches a subtraction flag “1”. Subtraction Processor9sets a low attenuation amount for the data level when the subtraction flag is “1”, and sets a fast attenuation amount when the subtraction flag is “0”.
REFERENCES:
patent: 3810174 (1974-05-01), Heard et al.
patent: 4220969 (1980-09-01), Nitadori
patent: 4383258 (1983-05-01), Morin
patent: 4833475 (1989-05-01), Pease et al.
patent: 4845501 (1989-07-01), Pease et al.
patent: 5867121 (1999-02-01), Erickson et al.
patent: 6043775 (2000-03-01), Erickson et al.
patent: 6211814 (2001-04-01), Benjamin et al.
patent: 6441775 (2002-08-01), Fujikawa et al.
patent: 7268725 (2007-09-01), Makkapati et al.
patent: 2008/0030401 (2008-02-01), Kojima et al.
patent: 2440270 (2008-01-01), None
patent: 2005091262 (2005-04-01), None
Fujikawa Takumi
Kojima Tatsuya
Birch & Stewart Kolasch & Birch, LLP
Furuno Electric Co. Ltd.
Sotomayor John B
LandOfFree
Radar 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 Radar apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4103464