Patents by Inventor Aran N. Netravali

Aran N. Netravali 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: 5010405
    Abstract: A television encoder for generating a receiver-compatible signal from a production video signal containing enhancement information which cannot be displayed on a standard receiver, the receiver-compatible signal being compatible with the standard receiver, the encoder including a filter bank for dividing the video signal into at least two groups of spatial frequency components including a first group and a second group, the first group containing members which when combined together form a standard video signal which is displayed by the standard receiver and the second group containing the enhancement information; a quantizer for quantizing at least one member of the first group; a combiner for adding at least one member of the second group to a quantized member of the first group to produce a modified first group; and a synthesizer for combining the members of the modified first group to generate the receiver-compatible signal.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: April 23, 1991
    Assignee: Massachusetts Institute of Technology
    Inventors: William F. Schreiber, Andrew B. Lippman, Edward H. Adelson, Aran N. Netravali