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Avoiding redundant transmissions of data during multimedia mobile phone communications

  • US 8,548,436 B2
  • Filed: 08/15/2012
  • Issued: 10/01/2013
  • Est. Priority Date: 05/02/2008
  • Status: Expired due to Fees
First Claim
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1. A method, performed by a multimedia mobile device involving an outgoing transmission including graphical/video data, comprising:

  • sending, to a receiving mobile device, an identifier of the data;

    determining, prior to sending the data to the receiving mobile device, that the receiving mobile phone does not contain a portion of the data;

    sending, to the receiving mobile phone, only the portion of the data not contained by the receiving mobile device;

    determining a checksum of a file of the data;

    transmitting, to a server containing a registry of files saved at the receiving mobile device, an inquiry regarding whether the receiving mobile device has a file having the same checksum; and

    receiving, from the server, a response to the inquiry, whereinthe determining that the receiving mobile phone does not contain the portion of the data is based upon the response to the inquiry.

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