Patents by Inventor Per A. Holmberg

Per A. Holmberg 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: 5469477
    Abstract: A method and an arrangement minimizes skew in digital synchronous systems. The arrangement includes N number of driver circuits, each of which has a P number of buffer units, of which each has an input and an output. Each driver circuit has a delay of .delta..sub.1, .delta..sub.2, .delta..sub.3, .delta..sub.4 . . . .delta..sub.N. Of these buffer units, N-1 buffer units are reserved while the inputs of the remaining buffer units P-(N-1) are connected mutually in parallel. The reserved buffer units are used as follows. A signal deriving from a signal source is applied to an input of a first buffer unit in each of the N-number of driver circuits, where the signal is subjected to a delay. The one-time delayed signal from a driver circuit is then delayed once, and only once, in the reserved buffer units of each of the remaining driver circuits. This procedure is repeated for each of the once-delayed signals on the outputs of the first buffer unit in each of the remaining N-1 driver circuits.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: November 21, 1995
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Per A. Holmberg