Patents by Inventor Jianhua Lu

Jianhua Lu 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).

  • Systems and methods for reducing broadband image noise through a programmable bandwidth RF variable gain attenuator
    Patent number: 7778618
    Abstract: Systems for suppressing image noise are provided. In this regard, one embodiment includes a system for suppressing image noise comprising a low noise amplifier (LNA) configured to amplify a received RF signal, an RF variable gain attenuator with an image rejection filter with programmable bandwidth configured to suppress image noise and image interference, and an RF mixer configured to perform frequency translation.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: August 17, 2010
    Assignee: Conexant Systems, Inc.
    Inventors: Jianhua Lu, Mark Santini, Weinan Gao, Mats Lindstrom, Damian Costa
  • Catalog Builder with an Expert System
    Publication number: 20090299879
    Abstract: A Catalog Builder that has a built-in Expert System which assists Catalog Builder operators in catalog building. The Expert System contains a knowledge database that stores keywords that can be used to describe a product or help a product get discovered during a search, and, optionally, the definitions of those keywords. The Expert System has one main function: it makes keyword suggestions to Catalog Builder operators during a product information submission process. The Expert System can also have a second function, which is to acquire product knowledge from Catalog Builder operators by adding new keywords that have been entered by Catalog Builder operators during a product information submission process to the knowledge database, or by allowing Catalog Builder operators add new keywords and optionally, their definitions, to the knowledge database during a catalog building process.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 3, 2009
    Inventor: Jianhua Lu
  • Systems and Methods for Reducing Broadband Image Noise Through a Programmable Bandwidth RF Variable Gain Attenuator
    Publication number: 20080160946
    Abstract: Systems for suppressing image noise are provided. In this regard, one embodiment includes a system for suppressing image noise comprising a low noise amplifier (LNA) configured to amplify a received RF signal, an RF variable gain attenuator with an image rejection filter with programmable bandwidth configured to suppress image noise and image interference, and an RF mixer configured to perform frequency translation.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Applicant: CONEXANT SYSTEMS, INC.
    Inventors: Jianhua Lu, Mark Santini, Weinan Gao, Mats Lindstrom, Damian Costa