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Ship collision preventive aid apparatus

  • US 4,706,090 A
  • Filed: 01/22/1985
  • Issued: 11/10/1987
  • Est. Priority Date: 01/27/1984
  • Status: Expired due to Fees
First Claim
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1. A ship collision preventive aid apparatus comprising:

  • (1) a color cathode ray tube including a display screen for displaying the following pictures;

    (i) a radar picture displayed on said display screen at the center thereof on which figures including arrows, circles, straight lines, and squares are overlapping displayed;

    (ii)(a) a first key picture for a command for automatic catching of either one or a combination of targets, including a designated target, wake display, or cancellation of a designated target,(b) a second key picture for calling a command for setting either a guard zone, a suppress zone, or a fairway,(c) a third key picture for either switching an ON-center/OFF-center of a bearing scale, selecting a bearing mode, or switching a display range,said pictures (a), (b) and (c) being displayed on said display screen at a portion of the periphery thereof,(iii) own ship data and other ship data displayed on said display screen at a different part of the periphery thereof,(iv) alarm marks for informing the operator of the entrance of other ships either in or entering into the guard zone or error, said alarm marks being displayed on said display screen at a still different part of the periphery thereof,(2) a touch panel for supplying position signals representing contact points on said panels contacted by the operator, said touch panel overlapping disposed on the display screen of said cathode-ray tube and transmitting pictures displayed on said display screen;

    (3) a forming means for forming, based on said position signals, the coordinates of selected points on said display screen corresponding to said contact points on said panel;

    (4) a judging means for judging, by output signals form said forming means, that the picture including the coordinates of said selected points is any of said key pictures, said radar picture or other picture than said key pictures and said radar picture,(5) a processing means for executing predetermined programs, based on output signals from said judging means, thereby to perform the operations as follows;

    (i) when said first or second key picture and the radar picture are continuously selected,(a) a program corresponding to said first or second key picture selected is executed to overlappingly display, on said radar picture, predetermined ship collision preventive aid data such as cross marks representing designated targets which have been caught, the course and the wake of other ships designated, the guard zone, the suppress zone, or the fairway,(b) data of the own ship and other ships caught as targets are computed based on said radar picture and disp1ayed on said display screen at the periphery thereof, and there are overlappingly displayed, on that portion of said radar picture showing other ships, figures such as small circles, or small squares, in respectively different colors dependent on the degree of danger of collison determined based on the data thus computed,(c) when setting the guard zone, the suppress zone, the fairway or the like, said second key picture being temporarily changed to a setting command key picture for the guard ring, the suppress zone, or the fairway,(ii) when said third key picture is selected, the program corresponding to said third key picture is executed for carrying out the operations including the display of the ON-center/OFF-center of said radar picture, the display of the head-up, the display of the north-up, the switching of the display range, and(iii) when a picture other than any of said key pictures and said radar picture is selected, there is displayed an alarm mark informing the operator of the occurrence of an error, on said display screen at the periphery thereof.

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