Interference source identification
Patent 5048015 Issued on September 10, 1991. Estimated Expiration Date: 
June 14, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 14, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 4280222 Voice band multiplex transmission system Signal transmission system featuring bidirectional transmission of different signal types over a common transmission line connecting a central unit and a plurality of terminal units Pseudorandom word sequence synchronizer A-point to multi-points communication system Patent #: 4901313 InventorAssigneeApplicationNo. 538367 filed on 06/14/1990US Classes:370/312, Message addressed to multiple destinations370/320, Code division (CDMA)370/335, Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)375/150, Correlation-type receiver375/224, TESTING375/350, By filtering (e.g., digital)455/296Noise or interference eliminationExaminersPrimary: Olms, Douglas W.Assistant: Ton, Dang International ClassH04J 003/12AbstractA method and apparatus for immediately identifying the presence and the source of interference in a communications system. A separate identification code is superimposed on each signal transmitted from a separate transmitter. At any receiver, if an undesired signal causes interference, it can be idenified via its associated identification code. In one embodiment, spread spectrum chip sequences are used as the identification codes. | |
