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Data recording apparatus and method for a semiconductor memory card

  • US 5,758,321 A
  • Filed: 02/29/1996
  • Issued: 05/26/1998
  • Est. Priority Date: 07/13/1995
  • Status: Expired due to Term
First Claim
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1. A data recording apparatus for a semiconductor memory card comprising:

  • analog/digital converting means for converting an analog audio signal input from a microphone or an external device into a digital audio signal and for outputting said digital audio signal;

    digital signal processing means for detecting at least one of;

    sound and sound-free sections of said digital audio signal, for producing a sound/sound-free detection signal, and for compressing and outputting said digital audio signal to produce audio data;

    key input means having a recording key, an end key, and a chapter selection key for generating recording, end, and selection commands, respectively;

    controlling means for generating time data corresponding to a range from a first sound-free section to a second sound-free section according to said sound/sound-free detection signal, for controlling said time data and audio data to record said time and audio in a data transmission block if said key input means generates said recording command, and for automatically generating a recording start signal according to said sound/sound-free detection signal if said key input means generates said selection command;

    a data buffer for temporarily storing said audio data and a table of content (TOC) area data output to said controlling means; and

    an IC memory card for reading and storing the audio data and TOC area data stored in said data buffer.

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