US PATENT SUBCLASS 370 / 298
LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE)

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

298LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE) {5}
299  DF  .~> Data switching exchange
300  DF  .~> Data assembly or formatting
301  DF  .~> Transmitting time of transition and logic state
302  DF  .~> Channels separated in frequency
303  DF  .~> Rotary distributor {1}

DEFINITION

Classification: 370/298

LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE):

(under the class definition) Subject matter wherein the multiplex feature is unique to a system in which data flow is normally slow and data is not recurring at exactly the same periods.

(1) Note. Examples of such systems are teletypewriter and telegraphy.

(2) Note. A signal transmission speed lower than 300

symbols per second may be considered a low speed transmission in the scope of this class.

SEE OR SEARCH CLASS

178, Telegraphy, appropriate subclass for nonmultiplex asynchronous data systems including a teletypewriter.