The capability of early visual performance evaluation of alternative driving schemes is a major issue for time-effective and low-cost design of driver circuits for liquid crystal displays (LCD). We implemented a platform-independent, high-level, fully-configurable LCD driver simulation environment. The software incorporates an accurate driver/LC circuit model for reliable frequency characterization of the display module behavior. We demonstrated its efficiency in elaborating an optimal driving configuration that yields crosstalk-free image representation. The tool has been integrated into industrial design flows
Current trends in the market of mobile display applications demonstrate the interest in increasing the qualify of image representation in portable imaging devices. Due to,he implementation constraints dictated by the display driver electronics, however, this makes the availability of efficient, low-cost, embedded image compression engines highly attractive. We propose a YUV-based image encoding strategy that combines the advantages of alternative popular image compression schemes. We evaluated the performance of the proposed method by measuring the associated compression PSNR to show that it is independent of the characteristics of, the target image, which makes the technique capable of addressing a variety of display-based applications. We also provide implementation data to demonstrate that the effort of embedding our digital compressor within commercial display driver ASICs is negligible, while typical 10% saving in the total driver size can he achieved because of the on-chip memory reduction(1)
Liquid crystal displays play a crucial role in almost every application domain where the availability of smart human visual interfaces is recommended. The realization of appliances based on LCDs urges designers to develop a wide variety of technical skills and to match diverse and frequently conflicting implementation constraints. The choice of the most suitable liquid crystal technology, the proper design of the display driver electronics, as well as the conception of effective measures for built‐in removal of undesired optical artifacts are different yet outstanding aspects of LCD clever realization. Therefore, all advanced industrial LCD design flows commonly conjugate general‐purpose electronics design tools with specialized display emulation engines. Whereas the former facilitate and speed up the driver implementation, the latter are responsible for early stage evaluation of all sorts of interactions between driving equipment and back‐end liquid crystal panel, in order to curb the impact of unpractical and costly system revisions and delayed redesigns. In this view, deploying a dedicated and highly accurate physical model of the liquid crystal cell response to the applied electrical stimuli is an attractive feature, which makes the design environment significantly versatile and efficient.
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