Patents by Inventor Irwan Djajadi

Irwan Djajadi 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).

  • System and method for optimizing serial USB device reads using virtual FIFO techniques
    Patent number: 6393493
    Abstract: A USB-based data acquisition system including virtual buffer software which increases USB data transfer rates with minimal changes to DAQ driver level software. The virtual buffer software operates to receive or intercept calls made by the DAQ driver level software to acquire data from the device, wherein the DAQ driver level software is designed to read the data from the device one sample at a time from the device. The virtual buffer software intercepts the call and requests the data in bulk packets from the device. The virtual buffer software then stores the received packets of data in a virtual buffer or virtual FIFO maintained in computer system memory. The DAQ driver level software then obtains the data from the computer system memory using much faster transfers.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: May 21, 2002
    Assignee: National Instruments Corporation
    Inventors: David Madden, Mike Steed, Irwan Djajadi