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Power shutoff method for TCP/IP network device and recording medium recording the program therefor

  • US 6,760,853 B2
  • Filed: 12/01/2000
  • Issued: 07/06/2004
  • Est. Priority Date: 12/03/1999
  • Status: Active Grant
First Claim
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1. A power shutoff method for a TCP/IP network device comprising the steps of:

  • a step to monitor a connection status of a terminal connected to a TCP/IP network and judge whether power for said terminal can be shut off according to a result of said monitoring; and

    a step to shut off the power for said terminal when it is judged acceptable to shut off the power in said judgment step, wherein the power shutoff is judged acceptable in said judgment step when said connection status satisfies all of these conditions;

    TCP send buffer is empty;

    Delayed ACK is not in operation; and

    TCP status is not any of SYN_RCVD, SYN_SENT, LAST_ACK, FIN_WAIT_1 and CLOSING.

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