Abstract: An LCD display has disparate turn-on/turn-off characteristics whereby a rapid decrease in signal intensity at pixel positions can cause a flash effect. Such effect is avoided or reduced for a video signal including a large intensity decrease between successive images. By incrementally decreasing the signal intensity over three frames, rather than from one frame to the next, intermediate intensity steps reduce the frame-to-frame magnitude of intensity decrease. A key feature is selection of the size of the intermediate intensity step changes on a closed loop basis, by an operator viewing the image effects resulting from the operator's adjustments. Flash effects in particular applications may be affected by image content, incident light and other local conditions as well as by subjective viewer characteristics and preferences. By operator adjustment, while viewing the resulting display, the best presentation can be provided.

Abstract: The present invention features a dual mode, meander line loaded antenna (MLA) having an additional wideband plate or hat located above the horizontal top surface of the MLA antenna. The upper plate is spaced a predetermined distance above the MLA and held in place by dielectric blocks of a predetermined thickness. By properly spacing the additional plate, simultaneous wideband and narrowband reception can be performed. The added upper plate generally does not interfere with the usual narrowband operation of the original antenna structure. The modified antenna can accept radio frequency signals across a wide range of frequencies. The additional upper plate can be retrofitted to existing MLAs to modify them for dual mode operation.