Patents by Inventor Michael D. Erickson

Michael D. Erickson 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: 5920407
    Abstract: An imaging system for applying separate color tonemaps comprises an optical scanning assembly configured to scan an object and produce image data having a first resolution that corresponds to a color characteristic. A memory device associated with the imaging system stores a look-up table that corresponds to a predetermined transfer function. An image data processor operatively associated with the memory device and the optical scanning assembly alters the resolution of the image data having the first resolution to produce image data having a second resolution, the second resolution being less than the first resolution, and also applies the image data having the second resolution to the look-up table to look up LowPoint image data having a third resolution, the third resolution being greater than the second resolution.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: July 6, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Michael D Erickson, Dan S Johnson
  • Patent number: 5430289
    Abstract: An apparatus providing the capability to scan transmissive media is presented. The apparatus comprises an illuminating lid for an optical scanner. The lid is hingeably attached to the base of the scanner and provides a backlight for transmissive media. A light source, located within the lid, projects light through a translucent screen, through an X-ray for example, onto photodetector arrays located within the base of the scanner. Control means are provided to maintain the light intensity of the light source located within the lid so that a flat light profile is provided during the scan.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: July 4, 1995
    Assignee: Hewlett-Packard Company
    Inventors: Michael D. Erickson, Eugene A. Miksch, David W. Boyd
  • Patent number: 5280585
    Abstract: Disclosed is a switch that allows a peripheral device, such as a PCL printer, to be shared by multiple computer systems. The switch connects to each of the computer systems, and also to the peripheral device being shared. The first system is considered the primary user of the peripheral device, so when the second system requests access to the peripheral device, the switch causes the peripheral device to save its state temporarily while the second system uses the device. When the second system's use is complete, the switch causes the peripheral device to restore its state to the last state established by the first system. Therefore, the first system need not know that the other system used the peripheral device, since the state of the peripheral device appears unchanged from the last time the first system used the device.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: January 18, 1994
    Assignee: Hewlett-Packard Company
    Inventors: Richard L. Kochis, Michael D. Erickson
  • Patent number: 5199063
    Abstract: A facsimile device (also called a fax machine), having programmable autodial capabilities, which automatically generates legible telephone directory labels. The fax machine of the present invention has a window for displaying the telephone directory label and a memory for storing programmed telephone numbers and names. The fax machine also has a port which is connected to a printer. To automatically generate the telephone directory label, the fax machine accesses the memory for the programmed telephone numbers and names. Then, the fax machine causes the printer to print the telephone directory label by sending commands and the programmed telephone numbers and names to the printer.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: March 30, 1993
    Assignee: Hewlett-Packard Company
    Inventors: Michael D. Erickson, Richard L. Kochis
  • Patent number: D337109
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: July 6, 1993
    Assignee: Hewlett-Packard Company
    Inventors: Michael D. Erickson, James C. Dow