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Keyboard system with variable automatic repeat capability

  • US 4,323,888 A
  • Filed: 12/21/1979
  • Issued: 04/06/1982
  • Est. Priority Date: 12/21/1979
  • Status: Expired due to Term
First Claim
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1. Apparatus comprising in combination a keyboard system including a plurality of pressure actuatable keys, means including a transducer circuit and being responsive to the actuating pressure applied to any one of a number of said keys for generating an output signal having an amplitude related to said actuating pressure as applied to the actuated one of said number of keys, means responsive to actuation of all of said keys for accessing indicia corresponding to the actuated key, and a repeat circuit including said actuating pressure responsive means and having a converter circuit coupled to said last mentioned means for converting said output signal into a repeat signal during continued actuation of said one of said number of keys, said repeat signal undergoing repetitive state transition at a rate related to said amplitude of the output signal, and said means for accessing indicia further responds to said repeat signal by repetitively accessing the indicium corresponding to said one of said number of keys.

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