US PATENT SUBCLASS 370 / 523
.~.~.~ Using bit robbing

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}
522  DF  .~.~ Signaling (ancillary to main information) {6}
523.~.~.~ Using bit robbing

DEFINITION

Classification: 370/523

Using bit robbing:

(under subclass 522) Subject matter wherein a bit which is normally used to convey main information is temporarily used for supervisory information. (e.g., the 8th bit of a byte of information is temporarily used for signaling).