Patents by Inventor Jussi-Pekka Tervaluoto Tervaluoto

Jussi-Pekka Tervaluoto Tervaluoto 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: 6426714
    Abstract: A multilevel quantizer is provided in combination with dynamic element matching (DEM) circuitry in a multibit sigma-delta modulator. The DEM circuitry is implemented in a divided manner as two major component parts: at least one current mode DEM switch matrix (SM), and an associated DEM decision logic block that implements the DEM control algorithm and that controls the SM. The DEM decision logic block is removed from the delay sensitive sigma-delta feedback loop, while the DEM SM remains within the feedback loop. Also described is a convenient and efficient technique to implement the DEM SM, using current steering logic within the multibit quantizer. In this case one or more DEM switching matrices may be provided within the quantizer for reordering the N−1 digital output bits of the N-level quantizer.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: July 30, 2002
    Assignee: Nokia Corporation
    Inventors: Antti Ruha, Tarmo Ruotsalainen, Jussi-Pekka Tervaluoto Tervaluoto