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Automobile radio recording system

  • US 5,633,837 A
  • Filed: 10/11/1995
  • Issued: 05/27/1997
  • Est. Priority Date: 10/11/1995
  • Status: Expired due to Term
First Claim
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1. An automobile recorder, comprising:

  • a. a conventional automobile radio electronics circuit;

    b. a conventional cassette recorder connected directly to receive the analog output of said radio electronics circuit;

    c. an analog to digital converter in parallel with said cassette recorder directly connected to receive the analog output of said radio electronics circuit and has as its output a digitized version of said analog input, said analog to digital converter being normally blocked from receiving said radio circuit output;

    d. a random access memory that stores said digitized version for later recording by said cassette recorder without time delay, wherein the input to said random access memory is the output of said analog to digital converter;

    e. a digital to analog converter whose input is the digitized output of said random access memory, wherein said digital to analog converter has as its output the restored analog output of said automobile radio electronics circuit such that said analog output may be recorded onto said conventional cassette recorder at a later time;

    f. a microcontroller to unblock said analog to digital converter to receive the analog output of said electronics circuit and to order and operate said conventional automobile radio electronics circuit, said conventional cassette recorder, said analog to digital converter, said random access memory, and said digital to analog converter, according to program instructions;

    g. a read only memory that permanently stores said program instructions; and

    ,h. means comprising a multiplicity of controls under the control of a user that changeably enters said program instructions and initiates said microcontroller to unblock said analog to digital converter to permit recording by said cassette recorder the digitized version of the output of said radio circuit at a later time selected by said user.

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