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Display device

  • US 5,189,406 A
  • Filed: 08/28/1991
  • Issued: 02/23/1993
  • Est. Priority Date: 09/20/1986
  • Status: Expired due to Term
First Claim
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1. A display device for displaying a picture with grey-scale, the display device comprising:

  • a lattice of pixel elements, each selectably settable in dependence on the respective pixel-data in a received signal representing one picture for display;

    means to effect time-multiplex addressing of collections of rows of pixel elements within a group address period according to a predetermined sequence, each collection being addressed a plurality of address times for each picture;

    the addressing means including means to set in each group address period a group of collections of rows said group consisting of a plurality of collections of rows spaced apart in the address sequence such that the collections of rows in a group form a series with adjacent collections of rows having a temporal separation exhibiting a geometric progression in the addressing sequence, the geometric progression having a common ratio N which is an integer of at least 2;

    each pixel within a group being set for a time duration dependent upon the temporal separation of adjacent collections of rows within the sequence thereby to effect a grey-scale display.

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