US PATENT SUBCLASS 370 / 511
.~.~.~.~.~ Using redundant synchronization words

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

464  DF  COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9}
498  DF  .~ Combining or distributing information via time channels {17}
503  DF  .~.~ Synchronizing {6}
509  DF  .~.~.~ Using synchronization information contained in a frame {3}
510  DF  .~.~.~.~ Synchronization information is distributed over multiple frames {1}
511.~.~.~.~.~ Using redundant synchronization words

DEFINITION

Classification: 370/511

Using redundant synchronization words:

(under subclass 510) Subject matter wherein plural identical synchronizing words are transmitted so that the words may be compared to ensure the proper recognition of the synchronizing words.