Method for quick identification of special data packets

Details Method for quick identification of special data packets Method for quick identification of special data packets

2007-02-20

2007-02-20

Pham, Brenda (Department: 2616)

Multiplex communications

Fault recovery

C714S002000

Reexamination Certificate

active

09320200

ABSTRACT:
In packetized data communication, certain special data packets must be identified quickly without the variable overhead of processing through the data protocol stack. A common example of such packets is those used for triggering events: immediate action must be taken on their arrival. This disclosure concerns a method for identifying such packets through the use of the error checking codes which are usually included in packet transmission protocols. By adding appropriate bits to a special data packet before transmission, the error checking code can be forced to a specific, predetermined sequence which will be recognized by error checking hardware at a receiver. If the specific sequence is all ones (or all zeros), the recognition hardware can be simplified.

REFERENCES:
patent: 4507782 (1985-03-01), Kunimasa et al.

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