Page content here

Exclusive PerfectMotion Technology Eliminates Ghosting for Supernatural Movie, Gaming Experience
Even before the advent of 1080p onto the IT display scene, BenQ engineers were working towards transforming the humble LCD computer monitor into the central display portal for the tech-savvy digital lifestyle.  From movies to games and every visual enjoyment in between, BenQ monitors were being developed to display high-definition (HD) content with absolute perfection.  Today, with advanced PerfectMotionTM Technology, BenQ has realized their vision with widescreen LCD monitors that project life as real and fast as it happens, in perfect color and exceptional clarity. What Causes Motion Blur? To understand the significance of PerfectMotion, it is necessary to understand what causes the annoying image latency on LCD monitors, also referred to as ghosting and motion blur.  Two factors primarily cause image latency:  1) the way LCD monitors process images 2) the way the human eye perceives movement. First, Liquid Crystal Display monitors are classified as “hold-type” displays – an image is written and held by the pixels for one frame before a new image is written for the next frame.  Pixels thus hold a particular state of luminance until they are signaled to change state, as when one picture frame transitions into another during a movie.  The time it takes for a pixel to change luminance is termed “Gray to Gray” (GTG) response time.  As the screen image changes, each pixel will either increase or decrease in luminance as a response to voltage. In addition, after a pixel maintains a certain level of luminance for a particular interval of time, it will once
again weaken.  As a result, the screen image displayed on an LCD panelwill exhibit slight blurring compared to the original image.  Second, even if the GTG response time were brought to 0ms, motionblur would still be perceived when viewing highly dynamic video – a result of the human visual system,  which automatically	FP241WZ (top) & FP241VW come standard-equipped with advanced PerfectMotion Technology for uncompromised picture quality.
adjusts to the luminance changes in moving objects over time. This natural process is called “smooth pursuit tracking” or “spatial-temporal integration.”  Thus, when the luminance of each pixel changes from frame to frame, the transition is automatically picked up by the human eye.  A person's vision will capture the two different frames simultaneously before they fully shift to just the second frame. During the transition, the two images are combined, and the viewer will perceive a ghosting effect.  Imagine a pattern of alternating black and white blocks moving from left to right.  Our visual system will combine the black and white appearing in a particular area of the screen, and perceive a grey ghosting effect.
How PerfectMotion Works PerfectMotion works by addressing both the rendering process of the LCD monitor and the way the human eye works.  First, PerfectMotion employs BenQ’s proprietary Advanced Motion Accelerator (AMA) technology to accelerate the rotational speed of the liquid crystals in the screen panel by increasing the voltage.  As pixels change from one state to another quicker, GTG response time is reduced and there is less image latency. However, the simple truth is, even with a 0ms GTG response time, motion blur still exists in however small a degree because of the eye’s slow pursuit tracking.  PerfectMotion accommodates the eye’s spatial-temporal integration by modifying the way video is processed.  A black signal image is inserted between frames to counter the cause of ghosting.  The human visual system automatically combines each screen image with the all-black field during the transition between two images, thus preventing the spatial-temporal integration that results in ghosting and blurring.
PerfectMotion Technology is just one of many advancements BenQ has contributed to the overall industry, ultimately optimizing enjoyment and redefining the way consumers incorporate technological progress into everyday life.  With PerfectMotion, LCD monitors are no longer just computer displays, but are the ideal portal to unlimited HD viewing.  BenQ is also the first LCD monitor company to adopt the new era response time specification, Motion Picture Response Time (MPRT), promoted by the Video Electronics Standards Association (VESA).  Whereas the MPRT of a traditional LCD monitor with a 5ms on-off response time is more than 20ms, PerfectMotion-equipped monitors can boast an MPRT of less than 12ms, delivering superior, ultra-smooth action images. BenQ’s 24” widescreen FP241VW and FP241WZ LCD displays incorporate PerfectMotion Technology for unrivaled HD viewing enjoyment.