humidity, temperature should be avoided

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Water is a liquid crystal “natural enemy”, so do not let any thing with the water into LCD. In

addition to avoiding the above said, do not drink in the computer side of things, we must pay

attention not to the machine stored in damp, moisture will seriously damage the components within the

liquid crystal display;LCD Monitor in the winter and summer, and out of a heating or air-conditioned room The

temperature difference will lead to “condensation” occurs, the user at this time to the LCD power

would result in liquid crystal electrode corrosion, causing permanent damage. First of all, is to be

taken to avoid this from happening, at least not in general temperature is greater than 10 ℃ / 10

min; Once this happens, do not panic, but if found in the boot screen before the mist the surface with

a soft cloth gently rub on it, and then boot. If water has entered the LCD, as long as the LCD side in

warmer areas (of course can not be grilled over the fire), such as table lamps, will gradually

evaporate the water inside can be a. Touch Screen LCD Monitor If it is the rainy season, even without using a notebook, we have

regularly switched on, the machine running for some time to disperse the tidal heating component, and

the best notebook bag and placed in a packet of moisture-proof agent.

in a packet of moisture-proof agent.
While many of my friends like to eat while using the computer, will cause the food residue stuck to

the LCD screen or into the gap in the keyboard.USB Monitor In particular, some juicy, greasy food, it is

difficult to avoid the splash screen on the LCD difficult to clean up the stains; the use of water or

other beverages when the laptop have to be careful, if the liquid into the LCD screen turned on the

edge the gap, the consequences will be disastrous. At the same time for your body’s health, try to

avoid this habit.

Infrared touch screen

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Infrared touch screen installed in pairs around the screen infrared transmitter and

infrared receiver, receiver receiving an infrared transmitter, infrared matrix formation.

When the finger on the screen,Touch Screen LCD Monitor the finger block the infrared, so that X, Y two directions to

receive information sent to the host.

Induction intensity
Touch screen sensitivity is the performance, referring to the touch screen on the

external force can produce correct response range.Touch Screen Monitors

Matrix Switchers
To choose multiple input signals are output to the way multi way way way multi displays.
Absolute coordinate system
Touch screen is an absolute coordinate system, which directly point to the election

which, with the mouse such essential difference between the relative positioning system is a

place of intuition. Touch Screen TFT LCD Monitor Absolute coordinate system characterized by positioning coordinates of

each coordinate with the previous orientation has nothing to do, touch screen is a

physically independent positioning system coordinates of each touch screen data through

calibration to the coordinates, so that requires The coordinates of the touch screen no

matter what circumstances, with a bit of output data is stable, if unstable, this touch

screen can not guarantee absolute coordinate positioning.

The main design challenges and solutions

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National Semiconductor Asia Pacific marketing manager for power management products, said Wu Zhimin, TFT backlight application and other similar applications in the digital photo frame, LED backlight the main challenge is how to control the constant current flowing through the LED and produces a higher contrast. He stressed that “in addition to AC adapter, some digital photo frames can also be powered by a lithium-ion battery. To extend battery life, power and efficiency become very important factor.”

Wu Zhimin Description, National Semiconductor has a variety of LCD backlight solution, widely used in digital photo frame applications for small panels and large-size panels (20 inches).8 Inch Touch Screen LCD The latest LM3431 is a step-up controller integrated 3-channel constant-current regulator. It can be provided for the three series of high-precision LED constant current. The maximum output current of 150mA, through the expansion drive after 6 LED string. LM3431 provides excellent performance PWM dimming, dimming frequencies up 25kHz, this time to support 100:1 contrast ratio. 8 Inch Touch screen VGA Monitor If the dimming frequency to further reduce it, the contrast will be more than 1,000:1.

NXP Tim Chen that the digital photo frame applications codec processing will be another challenge. “Many users like the product of media-based VLIW DSP processor, however, to conduct real-time H.26? 1080i HD decoding and encoding is very challenging. Perhaps to the existing DSP technology, to use 2 to four chips to achieve this goal. “NXP’s program in, TM3282 is a VLIW media processor TriMedia 32 the latest version, it has sufficient computational performance to handle a variety of operating modes the future. The processors are able to multi-frame rate compressed video stream and associated audio stream to decode and encode. In addition to VLIW core, PNX1005 also includes a bit co-processor and embedded trace module.8 Inch Touch screen Monitor In addition, removed in the PNX1005 chip 2D graphics capabilities, and to 0.09um process design, so to further reduce costs and power consumption.

Shen Zhen Jia Wen product group is of the view, digital photo frame chip will be the trend toward SoC development to significantly reduce the cost and type of chip DSP SoC not need to consider a higher power consumption and overheating.


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