Patent ID: 8730243

Claim:
A system for displaying physiological information, the system comprising: a user interface having a viewable chart portion configured to display physiological information of an individual; a graph module configured to provide a two-dimensional virtual graph having a time dimension and a signal dimension, the virtual graph including time indicators that are spaced along the time dimension indicating time intervals and signal indicators that are spaced along the signal dimension indicating a predetermined signal scaling; and a waveform module configured to obtain physiological signals as a function of time, the waveform module configured to plot a waveform that is based upon the physiological signals on the virtual graph; wherein the user interface is configured to display the waveform and the virtual graph in the chart portion, the time and signal indicators of the virtual graph shifting along the time dimension in the chart portion at a recording speed as the waveform is plotted, the plotted waveform having a fixed relationship with respect to the time and signal indicators and shifting at the recording speed, the waveform module configured to store a history of the waveform extending out of a viewable area of the chart portion; and wherein the user interface is configured to receive a first user input for displaying a reference indicator on the virtual graph, the reference indicator extending along the time dimension and representing a signal value designated by the first user input, the user interface configured to subsequently receive a second user input for retrieving the history of the waveform into the chart portion to enable a user to view the retrieved history of the waveform relative to the reference indicator at the designated signal value.