Patents by Inventor Madhu A. Mehta

Madhu A. Mehta 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: 4205203
    Abstract: Different ones of a plurality of sounds or tones are digitally signaled selectively in the different time slots of recurring frame cycles by initially storing a group of PCM samples for each sound in addressable memory. As each given time slot recurs one sample of a sound preselected for that time slot is read out to a common bus, and as successive cycles occur the address signals applied to the memory during any given time slot are progressively changed to cause repeated scanning of the samples of the preselected sound. After address signals for one time slot have been pulled from a read/write memory, they are replaced by writing "next sample address" signals into the same location of that memory, the latter having a word location for each time slot and being addressed for reading and writing by control signals which exist during and uniquely identify the successive time slots of each cycle.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: May 27, 1980
    Assignee: Wescom Switching, Inc.
    Inventors: Madhu A. Mehta, Satyan G. Pitroda, Sagunabalan Vasanthkumar