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    Serving display functions by means of coded space information
    1.
    发明授权
    Serving display functions by means of coded space information 失效
    通过编码空间信息来显示功能

    公开(公告)号：US3623068A

    公开(公告)日：1971-11-23

    申请号：US3623068D

    申请日：1969-01-08

    Applicant: IBM

    Inventor： HORGAN THOMAS B ,  MOSHER LAWRENCE G ,  MULLERY CHARLES E ,  NEWCOMB CHARLES E

    IPC: G09G1/00 ,  G06F3/14

    CPC classification number: G09G1/00

    Abstract: Disclosed is a display system including a regenerative display and a memory where the memory provides the information which is displayed. The memory addresses have a one-for-one correlation with the display addresses. Each word obtained from a memory address is displayed, when it contains a character code, at its corresponding display address. Each word in memory can store a character code defining a character to be displayed or a function code defining a regenerative function to be performed. The function codes are placed in only those memory locations, adjacent locations containing character information, which contain an indication that nothing (i.e., a space) is to be displayed. A control field in each memory word is employed to designate the nature of the particular word stored, that is, to designate whether a function code, character code or some other code is stored in that word. Using control fields allows those words which normally contain only space indications to be beneficially used to contain function codes. The function codes, of course, are decoded in a different manner from the character codes.

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