Patents by Inventor Rudolf P. Koppe

Rudolf P. Koppe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5367592
    Abstract: A connector for optical fibres, in particular single mode fibres is proposed, comprising a connector pin which is fixedly secured to the fibre and a coupling sleeve which interconnects the two connector pins. To allow damaged connector portions to be replaced at low cost, three successive connectors (8,3,9) are provided for interconnecting two fibres (1,2) having a great length of several hundred meters, the two outer connectors (8,9) being connected with one connector pin (11,14 respectively) to one end of the two fibres (1,2 respectively) and the central connector (3) being connected to the other connector pin (12,13 respectively) of each of the outer connectors (8,9 respectively). Said fibre connection (7) can be interrupted by disconnecting the central connector members (3).
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: November 22, 1994
    Assignee: U.S. Philips Corporation
    Inventor: Rudolf P. Koppe
  • Patent number: 5343236
    Abstract: In an automatic cable attenuation compensation system comprising a fixed compensation part (FC-R/G/B) providing a stepwise adjustable attenuation compensation for substantially compensating cable attenuation, the stepwise adjustable attenuation compensation of the fixed compensation part being set after power-up, an adaptive compensation part (VC-R/G/B) is provided for a continuously active compensation for a further accurate compensation of the cable attenuation.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: August 30, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Rudolf P. Koppe, Nicolaas J. H. Eck
  • Patent number: 4518927
    Abstract: A signal processing system comprising a signal source (CAM), a signal processing unit (CPU) and connecting cables (CC1-CC5) having different lengths. A series circuit comprising a switchable signal attenuator (ATT), a low-noise, non-controlled signal amplifier (AMP2) and a AGC-signal amplifier (AMP1) is present to compensate for the variable cable losses. A change-over input (ST) of the signal attenuator (ATT) is coupled to a change-over circuit (ATS) which has a locking input (LT) and a measuring signal input (DT). The measuring signal input (TD) is coupled directly to a signal detection circuit (DET). A second output of the signal detection circuit is coupled to the locking input (LT), through a time signal generator (TSG). After a time delay of several dozen seconds, locking is effected, and the signal attenuator (ATT) can no longer switch-over during the normal signal processing operation and impermissible sudden signal amplitude changes are prevented.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: May 21, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Rudolf P. Koppe, Hendrik Blom
  • Patent number: 4051520
    Abstract: A chroma keying signal generator which does not operate in the usual manner with luminance dependent color difference signals (R-Y) and (B-Y) but with luminance independent chromaticity signals (R-Y)/Y and (B-Y)/Y. On the one hand a signal division may follow in the generator for deriving the chromaticity signals and on the other hand a threshold circuit may be used having a threshold voltage which varies with the luminance. Owing to the fact that generating the signal is independent of the luminance an intense, uniform background illumination without shadows thereon is no longer required.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: September 27, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Jan Davidse, Rudolf P. Koppe