Patents Examined by David Chuy
  • Graphing calculator with manual line drawing
    Patent number: 6891541
    Abstract: A graphing calculator (10) having manual line drawing capability. The calculator (10) is programmed to receive data representing the begin point and end point of a line (FIGS. 7 and 8), and to then draw a line that includes these points (FIG. 9). The display includes a display of the line equation (FIG. 9). The slope and y-intercept of the line may be adjusted using cursor direction keys. As the line is adjusted, it is redrawn and the line equation is re-calculated and displayed (FIG. 10).
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: May 10, 2005
    Assignee: Texas Instruments Incorporated
    Inventor: Guy W. Harris