A method for automatic adjusting brightness includes receiving pixel information. The pixel information are analyzed to obtain an image load. The image load is compared with a predetermined range. If the image load is less than the range, then a display duty cycle is set to be an upper limit. If the...http://www.google.co.uk/patents/US7796143?utm_source=gb-gplus-sharePatent US7796143 - Method and structure for automatic adjusting brightness and display apparatus
