Patents Represented by Attorney Nancy R. Simon
  • Patent number: 6141121
    Abstract: A method and apparatus for halftoning where at most one halftoned gray, or multi-level, pixel will occur in those halftone cells having a constant area of ink. The method and apparatus includes placing a threshold array and the pixel tonal values within the same range if the threshold array and pixel tonal values are in different ranges. The elements in the threshold array are then compared to the pixel tonal values in order to determine a resulting output value.The preferred apparatus for halftoning includes a memory for storing the threshold array; a multiplier for multiplying one 8-bit value representing the number of pixels in a halftone cell by a second 8-bit value which is a pixel tonal value; a comparator for comparing the results of the multiplier with an element from the threshold array; and a multiplexer for selecting a resulting output value based upon the output generated by the comparator.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 31, 2000
    Assignee: Apple Computer, Inc.
    Inventors: Kok S. Chen, Magnus L. Karlsson
  • Patent number: D442187
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 15, 2001
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D443279
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: June 5, 2001
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D444476
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: July 3, 2001
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D422982
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: April 18, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D423483
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: April 25, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D423486
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: April 25, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D424038
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: May 2, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D424039
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: May 2, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D424040
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: May 2, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D424542
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: May 9, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D424543
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: May 9, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D425038
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 16, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D426208
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: June 6, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D426209
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: June 6, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D426230
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: June 6, 2000
    Assignee: Apple Computer, Inc.
    Inventors: Daniele De Iuliis, Douglas L. Heirich, Jonathan P. Ive, Matthew Dean Rohrbach
  • Patent number: D427980
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: July 11, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D433392
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: November 7, 2000
    Assignee: Apple Computer, Inc.
    Inventor: Peter J. Hodgson
  • Patent number: D433994
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: November 21, 2000
    Assignee: Apple Computer, Inc.
    Inventors: Steven P. Jobs, Bartley K. Andre, Daniel J. Coster, Daniele De Iuliis, Richard P. Howarth, Jonathan P. Ive, Matthew Dean Rohrbach, Douglas B. Satzger, Calvin Q. Seid, Christopher J. Stringer
  • Patent number: D434763
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: December 5, 2000
    Assignee: Apple Computer, Inc.
    Inventors: Steven P. Jobs, Bartley K. Andre, Daniel J. Coster, Daniele De Iuliis, Richard P. Howarth, Jonathan P. Ive, Matthew Dean Rohrbach, Douglas B. Satzger, Calvin Q. Seid, Christopher J. Stringer