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System for custom recording

  • US 5,900,830 A
  • Filed: 05/22/1995
  • Issued: 05/04/1999
  • Est. Priority Date: 01/06/1987
  • Status: Expired due to Term
First Claim
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1. A programmable analog-to-digital converter module comprising an input terminal for receiving incoming analog signals, an input amplifier for setting the level of said received analog signals, low pass filter means coupled to said input terminal, sample and hold means operating at a sample rate for transferring stable state voltages representative of said analog signal, means for converting said stable state voltages signals into digital signals, means for altering said sample rate response to an input command signal sent under the control of a microprocessor or minicomputer a source of clock pulse having a given clock rate, means for dividing said clock pulses to produce timing signals having a cyclically recurring rate which is a multiple of said clock rate, means for applying said timing signals to said low pass filter, means for retiming said timing signals produced at said divided clock rate, and means for applying said retimed signals to control said sample and hold circuit and to control said analog-to-digital converter circuit means.

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