Abstract: An apparatus and method of automatically digitizing analog video and stroke and with size and positioning information. This is accomplished using signal characteristics of the deflection waveforms and video signals together with the video synchronization and blanking timing. This allows analog real time positioning and scaling by synchronizing the video data and deflection information. The deflection information in the form of signals either or both horizontal or X axis and vertical or Y axis characteristics such as amplitude, peak or peak to peak, and zero crossing, can be used to determine the size or scaling for each axis independently.

Abstract: Systems and methods for modifying an intensity of a CRT stroke signal provided to a digital display displaying a stroke image are provided. One apparatus includes a velocity module for determining a vector velocity of the stroke image and an encoder for modifying the intensity of the stroke signal based on the vector velocity. A system includes a deflection input from multiple axes, a multiplexer for outputting the stroke signal, and a velocity intensity module (VIM). The VIM is configured to receive the stoke signal, determine a vector velocity of the stroke image based on the deflection inputs, and modify the stroke signal intensity based on the vector velocity. One method includes receiving first and second deflection inputs for the stroke image, determining a vector velocity for the stroke image based on the first and second deflection inputs, and modifying the stroke signal intensity based on the vector velocity.

Abstract: A system and method for controlling backlight luminance of a display that includes a display region in which an image may be selectively rendered includes one or more devices for determining if operation in a reduced power mode is desired. If operation in the reduced power mode is not desired, the display region is at least substantially uniformly backlit. If operation in the reduced power mode is desired, only selected sections of the display region are selectively backlit.

Abstract: An apparatus and method of automatically digitizing analog video and stroke and with size and positioning information. This is accomplished using signal characteristics of the deflection waveforms and video signals together with the video synchronization and blanking timing. This allows analog real time positioning and scaling by synchronizing the video data and deflection information. The deflection information in the form of signals either or both horizontal or X axis and vertical or Y axis characteristics such as amplitude, peak or peak to peak, and zero crossing, can be used to determine the size or scaling for each axis independently.

Abstract: A control circuit for providing a common electrode voltage for a liquid crystal display dynamically controls the voltage applied to the common electrode according to various factors that affect the capacitance across the liquid crystal layer. The common electrode control circuit dynamically adjusts the common electrode voltage according to the current maximum and minimum display voltages. In addition, the common electrode control circuit adjusts the common electrode voltage according to the gate-to-source parasitic capacitance, as well as temperature fluctuations. Thus, the control circuit compensates for the most significant factors which may cause he inadvertent accumulation of a charge across the liquid crystal layer.