Communications: directive radio wave systems and devices (e.g. – Ship collision avoidance
Patent
1992-03-25
1993-12-07
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Ship collision avoidance
342183, G01S 1393
Patent
active
052686906
ABSTRACT:
Herein disclosed is a radar system having a function for setting a watch alarm region, which function has been improved in operability. A region displayed in a display part surrounding the radar system is divided by two border lines. One region, for example, a region having a smaller angle contained by the two border lines, is controlled to be set as the watch alarm region in accordance with the first setting instruction from a user, the other region is next controlled to be reset as the watch alarm region when receiving the second instruction from the user within a predetermined time period. Thus, the user may select one between the divided regions as desired, through easy operations. If a wrong region has been selected as the watch alarm region, differently from the user's will, the mistake may be readily corrected.
REFERENCES:
patent: 4281326 (1981-07-01), Anderson
patent: 4313115 (1982-01-01), O'Sullivan
patent: 4623966 (1986-11-01), O'Sullivan
patent: 4706090 (1987-11-01), Hashiguchi et al.
Matsushita Electric - Industrial Co., Ltd.
Tubbesing T. H.
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