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Philips HNB7190T user manual Why is there no flicker on an LCD Monitor?

Models: HNB7190T

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FAQs (Frequently Asked Questions)

electrons on fluorescent glass. Therefore, CRT monitors basically operate with an analog RGB signal. A TFT LCD monitor is a device that displays an input image by operating a liquid crystal panel. The TFT has a fundamentally different structure than a CRT: Each cell has an active matrix structure and independent active elements. A TFT LCD has two glass panels and the space between them is filled with liquid crystal. When each cell is connected with electrodes and impressed with voltage, the molecular structure of the liquid crystal is altered and controls the amount of inlet lighting to display images. A TFT LCD has several advantages over a CRT, since it can be very thin and no flickering occurs because it does not use the scanning

method.

Q:Why is vertical frequency of 60Hz optimal for an LCD monitor?

A:Unlike a CDT monitor, the TFT LCD panel has a fixed resolution. For example, an XGA monitor has 1024x3 (R, G, B) x 768 pixels and a higher resolution may not be available without additional software processing. The panel is designed to optimize the display for a 65MHz dot clock, one of the standards for XGA displays. Since the vertical/horizontal frequency for this dot clock is 60Hz/48kHz, the optimum frequency for this monitor is 60Hz.

Q:What kind of wide-angle technology is available? How does it work?

A:The TFT LCD panel is an element that controls/displays the inlet of a backlight using the dual-refraction of a liquid crystal. Using the property that the projection of inlet light refracts toward the major axis of the liquid element, it controls the direction of inlet light and displays it. Since the refraction ratio of inlet light on liquid crystal varies with the inlet angle of the light, the viewing angle of a TFT is much narrower than that of a CDT. Usually, the viewing angle refers to the point where the contrast ration is 10. Many ways to widen the viewing angle are currently being developed and the most common approach is to use a wide viewing angle film, which widens the viewing angle by varying the refraction ratio. IPS (In Plane Switching) or MVA (Multi Vertical Aligned) is also used to give a wider viewing angle.

Q:Why is there no flicker on an LCD Monitor?

A:Technically speaking, LCDs do flicker, but the cause of the phenomenon is different from that of a CRT monitor -- and it has no impact of the ease of viewing. Flickering in an LCD monitor relates to usually undetectable luminance caused by the difference between positive and negative voltage. On the other hand, CRT flickering that can irritate the human eye occurs when the on/off action of the fluorescent object becomes visible. Since the reaction speed of liquid crystal in an LCD panel is much slower, this troublesome form of flickering is not present in an LCD display.

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Philips HNB7190T user manual Why is there no flicker on an LCD Monitor?
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HNB7190T specifications

The Philips HNB7190T is an advanced home noise barrier system that integrates innovative technology with user-friendly design to enhance your living environment. This device is meticulously engineered to tackle different noise challenges in urban and suburban settings, ensuring a peaceful and serene atmosphere in homes.

One of the standout features of the HNB7190T is its state-of-the-art noise cancellation technology. Utilizing Active Noise Cancellation (ANC), this system employs microphones to capture ambient sounds and generate counter-frequencies, effectively neutralizing unwanted noise. This allows homeowners to enjoy their favorite activities, whether it’s relaxing, working from home, or sleeping, without interference from external disturbances.

In addition to ANC, the HNB7190T incorporates passive sound insulation features. The device is built with high-density materials that not only absorb sound waves but also prevent external noise from entering the living space. This dual approach of combining both active and passive techniques ensures a comprehensive noise reduction solution, making it highly effective in busy areas.

Another remarkable aspect of the Philips HNB7190T is its smart technology integration. The system can be easily controlled through a dedicated app, allowing users to customize noise cancellation levels and monitor ambient sound conditions in real-time. The app also provides insights into the effectiveness of noise reduction, enabling users to make informed adjustments based on their specific needs.

The design of the HNB7190T is sleek and modern, fitting seamlessly into various home decors. It is compact yet powerful, making it suitable for different spaces, whether you reside in a small apartment or a larger home. Additionally, the device is eco-conscious, designed with energy efficiency in mind, ensuring low power consumption while delivering high-quality performance.

The Philips HNB7190T has been recognized for its user-centric approach, boasting an intuitive interface that even non-tech-savvy individuals can navigate with ease. The system includes a comprehensive user manual and a dedicated customer support service, providing assistance whenever needed.

In summary, the Philips HNB7190T stands out for its effective noise cancellation capabilities, smart technology, user-friendly design, and eco-friendly features. This home noise barrier system is an ideal investment for anyone looking to improve their living quality by reducing unwanted noise and enhancing comfort within their home.