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METHOD AND CIRCUIT FOR CAPTURING KEYPAD DATA SERIALIZING/DESERIALIZING AND REGENERATING THE KEYPAD INTERFACE

  • US 20090106462A1
  • Filed: 04/30/2008
  • Published: 04/23/2009
  • Est. Priority Date: 05/03/2007
  • Status: Active Grant
First Claim
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1. A system for scanning a first keypad or keyboard, the system comprising:

  • a computer system arranged to generate first scan line signals to and receive first sense line signals as if the computer system was attached to the keypad;

    a deserializer having an interface that receives the first scan line signals from the computer system and generates the first sense line signals to the computer system, wherein the deserializer mimics the response that a keypad would when attached to the computer system'"'"'s scan and sense lines;

    a serializer that generates second scan line signals to and receives second sense line signals from a keypad;

    wherein the serializer mimics scan and sense line signals of the computer system, wherein the scan and sense lines signals are formatted into a serial bit stream by the serializer;

    a connection between the deserializer and the serializer, the serial connection arranged to send data in a serial fashion;

    wherein the serializer sends the bit stream over the connection, wherein the bit stream is received by the deserializer and reformatted into a form that is returned to the computer system as if the keypad was attached to the computer system.

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