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Method and apparatus for packet transmission

  • US 5,991,307 A
  • Filed: 03/28/1997
  • Issued: 11/23/1999
  • Est. Priority Date: 04/05/1996
  • Status: Expired due to Term
First Claim
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1. A method of transmitting a packet string with various packet intervals wherein an original packet string as said packet string with various packet intervals is transmitted from a transmitting side after being converted into a packet string with substantially fixed packet intervals comprising the steps of:

  • calculating a time stamp as a current time stamp for a current packet by adding a specified offset time to said current time at which said current packet has appeared;

    reading out a value of the time stamp for a previous packet having been stored as a value of a previous time stamp;

    comparing a value of said current time stamp with said value of said previous time stamp;

    updating said value of said previous time stamp having been stored with said value of said current time stamp and attaching said current time stamp to said current packet if said value of said current time stamp is more than said value of said previous time stamp;

    discarding a predetermined packet if said value of said current time stamp is not more than said value of said previous time stamp;

    storing said current packet attached with said current time stamp if said current packet is not discarded;

    adjusting a timing of said current packet attached with said current time stamp so that said packet forms said packet string with substantially fixed packet intervals; and

    transmitting said packet string with substantially fixed packet intervals.

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