Patents by Inventor Oded Lachish

Oded Lachish 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).

  • Convolutional interleaving/de-interleaving method using pointer incrementing across predetermined distances and apparatus for data transmission
    Patent number: 6014761
    Abstract: In an (de)-interleaver (201) for J long subsequences (640-646) of data units (612), FIFOs are mapped into a memory (245) in such a way that locations (240) needed for one FIFO are moving through the memory (245). A generator (208) modulo increments only a single pointer (p, 230) which activates memory locations (240-p). Thereby, increments .DELTA.j correspond to FIFO sizes. For some p, (de)-interleaver (201) reads (25) a data unit (612) from a location (240) and than writes a new data unit (612) into that location (240), thus saving set-up times to establish a pointer. Also, the (de)-interleaver (201) needs only a number of memory locations K=(D-1 ) corresponding to a (D-1) interleaving depth. The (de)-interleaver (201) as part of a system (200) is fully programmable and can transfer data in two directions. Also, (de-) interleaving parameters (D-1) and J can be reconfigured during data transmission.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: January 11, 2000
    Assignee: Motorola, Inc.
    Inventors: Oded Lachish, Ron Eliyahu, Marc Neustadter