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Cellular mobile telephone apparatus

  • US 6,275,690 B1
  • Filed: 12/24/1997
  • Issued: 08/14/2001
  • Est. Priority Date: 12/27/1996
  • Status: Expired due to Term
First Claim
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1. A cellular mobile telephone apparatus having a response message transmitter, comprising:

  • a memory for storing a plurality of audio messages for responding to an incoming call from a calling party;

    means for selecting one of said plurality of messages according to a responding user'"'"'s circumstance at the time of receiving the incoming call from the calling party, regardless of the identity of the calling party;

    means for transmitting the message selected by said selecting means to the calling party; and

    incoming call responding means operable when an incoming call is received to instruct said transmitting means to transmit the message selected by said selecting means to the calling party;

    wherein said incoming call responding means includes means for detecting voice of the user; and

    wherein said voice detecting means includes;

    means for transducing said voice of the user to an electrical signal;

    means for extracting a predetermined voice spectrum component from a voice signal fetched by said transducing means; and

    means for operating said transmitting means when the component extracted by said extracting means is higher than a predetermined noise level.

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