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      • HARVEST
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      CRT LIGHT-HEAD FOR AN AUTOMATIC DRAFTING SYSTEM

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      Lee_Kee_Shiu_1976_sec.pdf (9.543Mb)
      Date
      1976
      Author
      Lee, Kee Shiu
      Type
      Thesis
      Degree Level
      Masters
      Metadata
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      Abstract
      This thesis describes the method of implementation of a cathode-ray tube (CRT) for use with a high quality precision automatic drafting system intended for the preparation of maps on a flatbed drafting table. A CRT light-head, mounted in place of the normal optical-mechanical light-head on a drafting table, enables the production of a wide range of symbolized line features as well as symbols and names. The image on the CRT, which is generated according to the information received from a library file in the computer, is projected via an optical system onto a photo-sensitive material. This system also permits the application of 'area-fill° by means of the CRT light-head to save the use of 'peel-coat.' The system utilizes a PDP8/e mini-computer with 8K words of core memory, an 1.6M word disc unit, a 9-track magnetic tape unit, a CRT light-head, and a precision flat- bed drafting table.
      Degree
      Master of Science (M.Sc.)
      Department
      Electrical and Computer Engineering
      Program
      Electrical Engineering
      Supervisor
      Boyle. A. R.
      Copyright Date
      1976
      URI
      http://hdl.handle.net/10388/11691
      Collections
      • Graduate Theses and Dissertations
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