Data transmission system
Patent 4672633 Issued on June 9, 1987. Estimated Expiration Date: 
February 26, 2005. 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.
February 26, 2005. 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 3781873 Time-domain filter for recursive type signals Delay circuit Digital equalizer for high speed communication channels Non-recursive digital filter Patent #: 4388693 Inventors
ApplicationNo. 06/705779 filed on 02/26/1985US Classes:375/285, Antinoise or distortion375/263, Partial response375/290, Partial response375/296, Antinoise or distortion (includes predistortion)375/348, Intersymbol interference375/350By filtering (e.g., digital)ExaminersPrimary: Safourek, Benedict V.Attorney, Agent or FirmInternational ClassH04B 1/62 (20060101)Foreign Application Priority Data1984-03-02 NLAbstractA data transmission system comprising a transversal smearing filter at the transmitting end and a transversal desmearing filter at the receiving end. To simplify the filters, at least the sequence of coefficients of the desmearing filter is formed by elements of the set {-1, 0, +1}, which results in an optimum smearing of noise pulses in the system compared with a system without such a filter. | |
