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Intercom system

  • US 7,567,659 B2
  • Filed: 08/10/2005
  • Issued: 07/28/2009
  • Est. Priority Date: 08/16/2004
  • Status: Expired due to Fees
First Claim
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1. An intercom system comprising:

  • at least a master unit and an emergency-call mobile phone, the master unit capable of communication with an external terminal device inside a residence via a communication line, the emergency-call mobile phone operable to wirelessly communicate with said master unit and allow a user to use a call button to make a call to said master unit or to an external terminal device through said master unit, the emergency-call mobile phone configured not to be able to respond to a call from said master unit, said master unit including;

    notification control means for, when the emergency-call mobile phone makes a call, performing a transmission process so that the call is transmitted over said communication line to a plurality of previously determined contacts and performing a notification process in response to how the contact responds to the call;

    answer signal detection means for, after response from said contact, determining whether or not a response from the contact is an answering machine message based on voice information provided by the contact;

    storage means for storing contact priority order information indicative of the order of transmissions from said notification control means, notification information indicative of how a notification has been sent to the contact by said notification control means, information indicative of the number of notifications sent by said notification control means, and auto-answer information indicative of contents of an answering machine message, all of the information corresponding to each of said plurality of contacts;

    wherein said answer signal detection means determines whether or not a response from the contact is an answering machine message by matching the auto-answer information stored in said storage means and corresponding to each of the contacts and voice information sent as the response from the contact against each other,wherein said notification control means operable to;

    send the call to said plurality of contacts based on said contact priority order information so that the notification should take place in priority order;

    play back an emergency message after completion of the answering machine message in the event said contact responds to the call and said answer signal detection means determines the response from the contact is the answering machine message, and after playing back the emergency message, establish speech communication between said emergency-call mobile phone and said contact;

    immediately play the emergency message while setting an notification indicator flag in a corresponding box in a notification information column, the box associated with said contact, in the event said answer signal detection means determines the response is not the answering machine message, and after playing back the emergency message, establish speech communication between said emergency-call mobile phone and said contact;

    disconnect the speech communication in the event said contact does not respond for a predetermined time period; and

    repeat the transmission and notification processes for all of the contacts whose notification indicator flags are not set until the notification indicator flags associated with all of the contacts are set or the number of transmission and notification processes performed reaches a predetermined number of times.

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