DIGITAL IMAGING DEVICE CAPABLE OF AUTO-REGULATING BRIGHTNESS OF DISPLAY PANEL AND BRIGHTNESS AUTO-REGULATING METHOD THEREOF

摘要

A digital imaging device includes a display panel, a capturing unit for capturing a number of images including a current image and a subsequent image, a brightness measuring unit configured for measuring a brightness value of the current image, a judging unit configured for determining whether the measured brightness value is acceptable, a controller, a memory and a regulating unit. The controller is used for adjusting exposure parameters of the capturing unit for the subsequent image if the measured brightness value is not acceptable. The memory stores a table including a collection of brightness values and a collection of driving voltage values, wherein each brightness value is associated with a driving voltage value. The regulating unit is used for indexing a driving voltage value in the table associated with the measured brightness value, and adjusting the display panel according to the indexed driving voltage value if the measured brightness value is acceptable.