Patents by Inventor Hermann-Josef Pehl

Hermann-Josef Pehl 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).

  • Magnetic tape recording device having a rectifier installed on a rotating head drum for rectifying a signal being applied to the head
    Patent number: 5291344
    Abstract: In an arrangement for inductive transmission of a data signal to the recording head (9) in a magnetic tape recording device, in which the data signal to be transmitted to the recording head is delayed by a bit period, the undelayed signal and the delayed signal are combined and applied to an inductive transmission arrangement (11, 13). After passage through the inductive transmission arrangement, the combined signal is rectified in a rectifier (21) and then subjected to a DC voltage shift (22). The resultant signal is then amplified (10) and applied to the recording head.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: March 1, 1994
    Assignee: U.S. Philips Corporation
    Inventor: Hermann-Josef Pehl