FAQ
1. Why Toshiba LCD TV contrast ratio is very low ?
The definition of contrast ratio is a measure of the ratio from the brightest to the darkest color luminance that can be displayed. However, the display contrast ratio can actually be measured by several methods, and the results obtained can vary from each method.
Panel Contrast vs Dynamic Contrast
Maybe we will be confused that some models of LCD TVs have contrast ratio 10x higher than the others. The main difference lies in the lack of clarity between the panel contrast and dynamic contrast.
Panel contrast is a natural contrast ratio on LCD panel TVs. This shows the luminance of the brightest colors with the darkest color that can be produced simultaneously at any given time by the display (panel).
Dyanamic Contrast is the ratio of the luminance color of the brightest and darkest color that can be generated at a particular time just by using software to control the intensity of light from the backlight. At the time of a dimmer backlight, when the dark image in the dimmer it will be dark all of them, and vice versa on the image bright / light. Although Dynamic Contrast have a figure far higher than the panel contrast, it does not mean that the panel was able to produce a higher contrast in every time. In other words, in fact, contrast panel unchanged.
If you want in a deeper study, contrast ratio is more influenced by the surrounding light conditions. In an ideal room, the room was able to absorb all the reflection of light from the LCD TV, and the only light we see in the room was only coming from the LCD TV. With these light conditions, contrast ratio of the image will be equal to the ratio which the claim contrast a brand manufacturer of LCD TV. The living room or bedroom still reflects some light back towards LCD TV, so that the reflections of light lower the contrast ratio of the image.
2. Why Toshiba LCD TVs are still using the matt finish on its design ?
To be able to fully enjoy the quality of the picture, we must be inside a very dark room. Therefore there is no reflection of light from the surroundings. However, it is not common for consumers to watch TV on such conditions mentioned above. Therefore, at least there is little light or light enough from the sun in the room. On glossy design (piano finish), light that is reflected in the room will lead to frame LCD TVs, which will interfere with our enjoyment of watching TV. In Matt finish, the reflection of light from the surroundings can be reduced (minimized). Toshiba prioritize the pleasure to watch TV rather than the appearance of its design.
But of course, Toshiba will also be obeying the existing trend in accordance with the consumer's desire. Where we already know about LCD TVs in the latest models are already exist that use glossy (piano finish).
3. Why Toshiba LCD TV does not look as sharp as the Samsung LCD TV ?
Actually, the sharpness and brightness of the Samsung LCD TV set at a very high level that does not make sense. It makes the illusion that the images produced look very good. But the effect of high brightness and sharpness creates a high noise level and overshooting effects.
If we observe the images carefully, we will get a picture full of noise, especially on images that have detail perfect. Contours of the resulting image will have the effect of outlining artificial called overshooting.
Toshiba prefer the balance between sharpness and brightness of images to produce good control on the level of noise and the natural image reproduction.
4. Which should I buy, LCD TV or Plasma TV ?
Viewed from the consumer's decision, LCD TVs are taking over the need for a Plasma TV. The advantages of LCD TV compared to Plasma TVs are as follows :
Size more.
LCD TVs have a size greater than a small inch and 50 inch. Range is more suited to the needs of each household, however, focus on the size of Plasma TVs are generally 42 inch and larger.
Free from burn-in effects
LCD TVs are free of the effects of burn-in problem (the sign generated in the panel due to display static images, especially on bright images.) So we can say the Plasma TV has this kind of problem. Once this burn-in problem arises, it can not be repaired and signs will remain permanently arise on the panel.
Easy maintenance
At the time of LCD TV and Plasma TV so old (after use for some time), the brightness of the image of the panel will be reduced. For LCD TVs, the backlight can be replaced to restore its original brightness of the image, just like new. But on Plasma TVs, we can not do anything, except to replace a whole panel of plasma TVs where the price of the panel itself is almost equal to the new one.
Lower power consumption
LCD TVs consume less power than plasma TVs, if measured in the more-efficient LCD TVs 30% use electric power than Plasma TVs. Plasma TVs use more power due to the ability of self-emitting it.
Smaller heat generated
LCD TVs use the backlight for the region contributes to the light, where the backlight is the same as neon lights. The heat generated is smaller.
Lighter weight
LCD TV is lighter when compared to the size of Plasma size, it makes LCD TVs easier to be moved or hung on the wall.
Technical explanation about the structure of the LCD TV and Plasma TV
LCD (Liquid Crystal Display)
LCD Display is made from a small combination of thin-film-transistor (TFTs). Responded with an electric current, Liquid (fluid) in the pass or hold the white light generated by the backlight. LCD produces colors through the process of closing and opening. They will hold long spectrums specific color from white color and will miss the correct/ appropriate color. And the intensity of light that is passed to through this liquid crystal matrix which makes the LCD TV will produce and rich colors gradation.
Plasma Display
Plasma displays is self-emitting displays. Plasma screen TVs are made of individual pixel cells which allow electric pulses to stimulate natural gas, usually xenon and neon are made to be lit. This light illuminates the appropriate balance between phosphorus red, green or blue in each cell to produce the appropriate color sequence of light.
5. Which is best for my purchases, Full HD LCD TV or HD Ready LCD TV ?
The higher the resolution, of course, the price will be more expensive. But it all depends on your need for quality LCD TV. Therefore, a smart buyer would have predicted the future will be a chance to watch HD programs and differences in the quality of the two options above.
Full HD LCD TV
Full HD LCD TV panel display systems have a mean horizontal and vertical resolution 1920 1080, ie 1920 x 1080. It can be said to have more than 2 million pixels.
Full HD Panel is in accordance with the broadcasting High Definition (1920x1080) and HD DVD specifications. Therefore, reproduction can display pixel to pixel without decreasing the resolution. The image quality is best guaranteed.
HD Ready LCD TV
HD Ready LCD TV means the display panel has a vertical resolution equal to and more than 720, with a combination of different resolutions. The most common is 1366 x 768, which has more than 1 million pixels.
HD Ready LCD TV can also receive HD signals, such as: broadcast digital broadcast and HD DVD, where high resolution is adjusted with a resolution of the panel. But anyway, the picture quality will be slightly reduced.
6. Do I have to buy a Digital LCD TV to receive digital broadcasts ?
An LCD Digital TV already has a digital tuner to receive digital broadcasts. This is the easiest way to enjoy digital broadcasts.
Alternatively, a normal LCD TV broadcast can still receive broadcasts via the Digital Set-top Box. For simplicity, Digital Set-top digital tuner Box can be considered as beyond the LCD TV that can receive and decode digital signals.
7. Is HD1080p ready LCD TV has a higher picture quality than LCD TV Ready ?
The statement actually is not true actually, it's because at the moment of its source, the resolution of HD signals that exist in society, recorded in 1080i (interlaced) format. For example, HD DVD and digital broadcasting is actually recorded in 1080i HD. What do the process of de-interlacing to progressive signal through built-in I / P converter for generating a signal HD1080p (progressive) is an HD DVD player and HD Set-top Box.
Basically, all of which is shown by the LCD TV is in the form of progressive. Although HD 1080i incoming signal, with a built in TV converter I / P (Interlace / Progressive) change the interlace signal into progressive signal before it is displayed on the screen. In other words, HD1080p signal will not pass through the converter I / P in the TV and will be produced directly. Therefore, it will not look much difference in the resulting picture quality and HD1080i HD1080p on the LCD screen TVs, because they will be produced on the screen with HD1080p format. If there is any difference lies in the quality of the converter I / P.
8. What are the benefits of 100Hz LCD TVs ?
Words of 100 Hz should be called double scan. PAL signal in 50Hz will be double scan into 100 Hz and NTSC 60Hz signal will become 120Hz. The advantage of the 100Hz LCD TV is to produce smoother moving images free from the effects of blur and edge unevenness image.
Motion picture produced by so many fast-moving static frames. With the additional frame, the resulting picture will be more subtle. Hz represents the number of frames shown in 1 second. Normal LCD TVs produce 50Hz (PAL) and 60Hz (NTSC). Effects are less clear picture arises in a fast moving images, is due to the nature of the hold, the nature of the LCDs (One frame image is displayed will be suspended until the next frame appears). So that moving images are continuously generate jittered on the next frame, and blur effects. Blur effect in motion pictures will be more visible on larger displays in LCD TVs.
By making the double of the frame, 100Hz technology to shorten the holding time at each frame by half, to minimize blur effect with effective. Moving pictures and writing that moves (running text) passes through the LCD TV will look more smooth and sharp without any broken effect .
9. What size TV to suit me ?
One of the considerations when planning to buy a TV is the size of the screen. Size of LCD TVs are one of faults from a buyer who will make the buyer was disappointed after the purchase. Therefore we must be careful if you want to buy TV or LCD screen size plasma TV.
There are a few tips as your consideration:
1. Measure the size of the room where you plan to put your TV. By looking at the TV viewing distance you can determine what the appropriate size TV. Below are some suggestions on the TV screen size when compared with the distance to watch:
TV viewing distance depends on the size of TV that you have a plan. This is only a guide and it all went back to the choice of the buyer, because nobody likes much closer than the distance that exist in the guides and vice versa.
| Size of TV: | Recommended viewing distance is: | |
| a) Type 20 - 27 | 80 cm - 1.5 m | |
| b) Type 32 - 37 | 1.8 m - 2,4 m | |
| c) Type 42 - 46 | 3 m - 4.3 m | |
| d) Type 50 and above | 3.7 m - 4.9 m |
2. Check the available empty space where you will put your LCD TV. If you are someone who likes to invite your friends, you certainly would prefer a TV in the large size even though the place was not adequate.
3. Decide whether you want to put it on the wall or put it on the table. If you choose to put on the table, check the strength of the table is able to withstand the weight of the TV.
4. Decide if you want to put speakers beside or below. TV with speakers under on it will help to reduce unused space. If you buy a TV with existing speakers in addition, do not forget to measure the size of these speakers.
5. Plan your budget carefully, if you want to buy a TV with wide screen. A larger TV screen is certainly more expensive price.
6. Determine the usefulness of your TV. If you are planning to hold a presentation via the computer is or game interactive, TV screen size is an important thing.
10. Why do images look different when viewed from the side ?
Viewing angle is the maximum angle that can be viewed on while watching TV. If you look at very large angles, most likely the image will look not so good quality.
Viewing angles on the TV is measured from one side to the other, when measured flat, providing maximum viewing angle 180 degrees. The best position to be able to watch TV is in front of the TV screen itself.
With the increase in technology that continues to advance, so it is possible to be able to see the TV from a very wide angle. Although LCD TV offers up to 170-degree vision angle, however the picture quality will be reduced because the more you look away from the center of the TV.
Previously called technical service, please check the table below regarding the possible causes of symptoms and some solutions.
SYMPTOMS AND SOLUTIONS
TV will not turn on- Make sure that the power cord is connected, then press the on / off
- Perhaps the remote control batteries are exhausted. Replace the batteries first.
- Check the antenna connection
- Maybe its voice on Mute. Press the mute button or
- May have difficulty in broadcasting stations. Try changing to another channel.
- Perhaps the difficulties in broadcasting stations. Try another channel
- Check the antenna connection.
- Perhaps the difficulty is in broadcasting stations. Try changing to another channel
- Adjust the PICTURE menu
- Check the antenna connection.
- Perhaps the difficulty is in broadcasting stations. Try with other channels
- Make sure the color system is set up correctly.
- Check the antenna connection.
- Show text that both depend on a strong broadcasting signal
- Perhaps the difficulties in broadcasting stations. Try another channel
- Maybe Acceptance bad antenna. Use external antenna with a height direction.
- Check if the antenna has been changed.
- Perhaps the difficulty is in broadcasting stations. Try changing to another channel
- Set Series of Color and / or Color in the PICTURE menu.
- Eliminate all existing obstacles in the antenna, remote control and sensor control at the TV.
- Perhaps the remote control batteries are exhausted. Replace the batteries with new ones.
- TV is in manufacturing by using a very high precision technology, but sometimes
- a few pixels on the screen may lose there are a number of picture elements or dots of light. This is not a sign of malfunction.
- If you just bought and started using this TV, Flicker may occur on the layer. In this case,
- turn off the TV, plainly on again to restore the condition.
- Cold cathode fluorescent lamps used for back light on this TV has a certain lifetime. If
- the screen brightness down or flickering screens, or some parts of the screen is not lit, probably towards the out-of-life. Contact technical service.
- If you turn TV-pad 00C and lower temperatures, you should wait until it warm.
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