GB882232A - Course indicating apparatus - Google Patents

Course indicating apparatus

Info

Publication number
GB882232A
GB882232A GB46758A GB46758A GB882232A GB 882232 A GB882232 A GB 882232A GB 46758 A GB46758 A GB 46758A GB 46758 A GB46758 A GB 46758A GB 882232 A GB882232 A GB 882232A
Authority
GB
United Kingdom
Prior art keywords
craft
image
traces
courses
trace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB46758A
Inventor
Melville Leslie Shelley
Gordon Victor Smith
Peter Nigel Wadham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Communications Patents Ltd
Original Assignee
Communications Patents Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Communications Patents Ltd filed Critical Communications Patents Ltd
Priority to GB46758A priority Critical patent/GB882232A/en
Publication of GB882232A publication Critical patent/GB882232A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G01C21/22—Plotting boards

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

882,232. Cathode-ray tube circuits. COMMUNICATIONS PATENTS Ltd. Dec. 30, 1958 [Jan. 6, 1958], No. 467/58. Drawings to Specification. Class 40(7). A cathode ray tube of the type which, once an image has been impressed on the screen, retains the image is used in an apparatus for indicating the courses of a number of craft. Pairs of signals corresponding to the cartesian co-ordinates of the various craft are fed in turn to the tube so that the courses of the craft are indicated by interrupted lines. Means are provided to brighten up traces from the faster moving craft so that all the traces appear to have the same brightness. To distinguish the course of one craft from that of another the traces are coded so that, for example, one trace may comprise a series of single dots while a second is formed of spaced pairs of dots. A marker can be painted on any trace to indicate the position of the occurrence of an event as, for example, the dropping of a marker buoy. By means of an epidiascope arrangement an image of the display may be projected on to a screen.
GB46758A 1958-01-06 1958-01-06 Course indicating apparatus Expired GB882232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB46758A GB882232A (en) 1958-01-06 1958-01-06 Course indicating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46758A GB882232A (en) 1958-01-06 1958-01-06 Course indicating apparatus

Publications (1)

Publication Number Publication Date
GB882232A true GB882232A (en) 1961-11-15

Family

ID=9704872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46758A Expired GB882232A (en) 1958-01-06 1958-01-06 Course indicating apparatus

Country Status (1)

Country Link
GB (1) GB882232A (en)

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