Patents by Inventor Richard M. Dow

Richard M. Dow 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: 6040917
    Abstract: A multi-resolution capable printer includes a critical operations memory buffer for enabling critical page print operations to occur without flushing the video buffers and without waiting for returned-in memory to heal into larger free blocks. The critical operations buffer thus enables improved constant printer throughput and reduced "pausing" during a multi-page print job. The critical operations buffer is dynamically sized to the resolution of the current page being printed. Thus, at higher resolution configurations, the critical operations buffer is reduced in size to allow the video buffers to increase in size to accommodate the higher resolution. At lower resolution configurations, the critical operations buffer is increased in size and the video buffers are decreased in size to accommodate the lower resolution. Advantageously, the total combined pre-reserved memory area utilized by the critical operations buffer and the video buffers remains constant.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: March 21, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Russell Campbell, Richard M. Dow, Timothy P. Blair, Burton H. Poppenga
  • Patent number: 5999272
    Abstract: An imaging device and method optimize memory usage during a print overrun avoidance operation by employing selected compression schemes upon page bands while ensuring that required decompression times of the bands are met for subsequent rendering purposes. A preferred method includes compressing a band from a page of image data and, if an estimated decompression time for the compressed band does not satisfy a race-the-laser threshold for subsequent video imaging, then decompressing the band and measuring an actual decompression time. If the actual decompression time satisfies the race-the-laser threshold, then the method includes keeping the compressed band for subsequent video imaging.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: December 7, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Dow, Douglas J. Mellor, Timothy P. Blair
  • Patent number: 4066104
    Abstract: A machine for manufacturing triaxial fabrics, primarily of the type disclosed and claimed in Reissue Pat. No. 28155, comprises a vertically oriented warp yarn supply means based upon a horizontally disposed rotating creel, on which is preferably mounted a plurality of beams each supplying a plurality of warp yarn ends. Guide holders travelling on a cam-shaped track compensate for warp yarn path length changes so as to maintain path lengths from creel to weaving means relatively constant independent of angular position of an individual warp yarn in the course of the weaving process. Preferably, a multiplicity of such guides are combined on a single trolley carrier several of which are mounted at spaced intervals on the cam-shaped track, the movement of which is co-ordinated with the rotational movement of the warp yarn supply creel.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: January 3, 1978
    Assignee: N. F. Doweave, Inc.
    Inventors: Murray Halton, Norris F. Dow, Richard M. Dow, Michael J. Hillebrand
  • Patent number: 4015637
    Abstract: A machine for manufacturing triaxial fabrics, primarily of the type disclosed and claimed in U.S. Pat. No. Re. 28,155, comprises a vertically oriented warp yarn supply means based upon a horizontally disposed rotating creel, on which is preferably mounted a plurality of beams each supplying a plurality of warp yarn ends. Guide holders travelling on a cam-shaped track compensate for warp yarn path length changes so as to maintain path lengths from creel to weaving means relatively constant independent of angular position of an individual warp yarn in the course of the weaving process. Preferably, a multiplicity of such guides are combined on a single trolley carrier several of which are mounted at spaced intervals on the cam-shaped track, the movement of which is co-ordinated with the rotational movement of the warp yarn supply creel.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: April 5, 1977
    Assignee: N.F. Doweave, Inc.
    Inventors: Murray Halton, Norris F. Dow, Richard M. Dow, Michael J. Hillebrand