Robust system for transmitting and receiving map data

Coded data generation or conversion – Digital code to digital code converters

Reexamination Certificate

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C341S051000

Reexamination Certificate

active

06861964

ABSTRACT:
Frames comprise odd fields and even fields. The frame sync segments of the odd fields contains a current map specifying the location of data in frames, a next map specifying the location of data in a future frame, and a frame count designating the future frame. The frame sync segments of the even field may contain the same information. Alternatively, the frame sync segments of the odd fields contain the current map and part of the frame count, and the frame sync segments of the corresponding even fields contain the next map and the rest of the frame count. A receiver uses the map and frame count information to find data in the fields of received frames.

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Hammons, Jr. et al., “The Z4-Linearity of Kerdock, Preparata, Goethals, and Related Codes”, 8097 IEEE Transactions on Information Theory 40(1994) Mar., No. 2, New York, pp. 301-319.

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