Widescreen vs. Standard aspect ratios

When choosing a projector, TV, computer monitor or laptop screen one of the first things you will need to consider is the format of the screen that you need for you application. Traditionally these electronic display devices used a format described as “standard” 4:3 aspect ratio, but a more recent format called “widescreen” 16:9 is becoming an increasingly popular choice, especially for televisions and laptops. Whether to choose the widescreen format or standard format is an important decision because it will have a big effect on how your displayed image looks. This Bamboo AV Advice article should help you to understand the differences between standard format and widescreen to make sure you choose the format that is right for you. 

Why are there two aspect ratio formats?

Historically televisions have used an aspect ratio that is close to a square shape, called 4:3 (4 units measured horizontally to every 3 units measured vertically). This is because at the time of their first production, films were also displayed using a 4:3 aspect ratio known as the “Academy ratio”. By having TV screens match this 4:3 aspect ratio, movies previously photographed on film could be viewed on regular TVs.

However, during the 1950s there was a wholesale change within the film industry to use widescreen images, brought about by reductions in the number of people going to see films at cinemas. Only recently, TVs that conform to the same 16:9 aspect ratio that film producers use have started to be manufactured. These have become extremely popular and have come down in price since their initial launch. More and more broadcasters are switching the aspect ratio of their television programmes from the traditional 4:3 aspect ratio to a 16:9 widescreen format. The revitalization of the European television industry has been largely attributed to the introduction of digital widescreen offerings. 

Standard 4:3 format aspect ratio

A standard aspect ratio television screen is a TV with a resolution that matches the NTSC or PAL broadcasting standards. These TVs are designed for analog signals and use a square-like 4:3 aspect ratio. Devices with a standard 4:3 aspect ratio are incapable of outputting High Definition content. In this respect, standard format televisions are inferior to widescreen televisions, and there are many other benefits to using widescreen devices which are covered in more detail below.

Standard 4:3 television screens are gradually being phased out, as are standard definition analog television broadcasts. Within consumer electronics shops non-widescreen televisions are becoming increasingly rare. Furthermore, the majority of countries in North America and Europe now have set dates in the near future when these analog signals will be turned off permanently.

Widescreen 16:9 format aspect ratio

The widescreen 16:9 aspect ratio is the image standard of the future, designed to succeed the traditional 4:3 square aspect ratio. To take advantage of the benefits “true” widescreen can offer, you need to own both a widescreen television and videos coded in a 16:9 aspect ratio, such as High Definition television content, which only comes in widescreen format.

Although widescreen 16:9 format is synonymous with High Definition content, 16:9 is also commonly used with standard definition television and DVDs. The reason for this is because DVD film producers and TV broadcasters offer both 16:9 and 4:3 outputs. 

Other display devices

• Projector panels

Nearly every fixed resolution projector on the market at the moment uses the standard 4:3 aspect ratio. This means that the panel inside the projector, on which the desired image is to be mapped, is 1.3 times wider than it is high. Although 4:3 is currently the norm, sooner or later the 16:9 aspect ratio will take over in much the same way as it has with television sets.

• Laptops

Initially all laptops were developed with a 4:3 aspect ratio. However, widescreen laptop screens are now becoming more prominent due to the extra 25% of screen size offered and the trend towards high definition content. Furthermore, as the surface area of the device is limited, a laptop with a wide screen is more suitable for implementing a full sized keyboard.

• Computer monitors

Widescreen 16:9 displays are becoming increasingly popular in computer monitors due to their ability to show multiple windows on-screen at the same time. The aspect ratio that the majority of widescreen computer monitors use is actually 16:10 rather than 16:9. 

The benefits of a widescreen 16:9 aspect ratio

The benefits of the widescreen aspect ratio format are numerous, so it is easy to see why widescreen devices have become so popular so quickly. These benefits are summarized below.

• The future format

In only a few years time, videos in widescreen format will be the only type available. Furthermore, widescreen televisions will soon become the only type of TV available for purchase.

• Same size picture as films

All movies are now shot using a 16:9 aspect ratio, meaning if you have a widescreen display device the video will be displayed without the black borders present in 4:3 television screens.

• Blu-ray format

Blu-ray is the next generation DVD format that outputs films in High Definition. To make use of this it is necessary to have a widescreen 16:9 High Definition television.

• High definition content

High Definition content is only output in 16:9 aspect ratio resolutions of 1280×720 or 1920x1080.

• Increased viewing area

Pictures displayed using a widescreen aspect ratio show 25% more of an image than 4:3 aspect ratio pictures. 

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Tips to extend your projector’s lamp life

One of the most expensive parts of the projector, and one which will most likely need to be replaced at some point during the projector’s life, is the projector lamp (also called the projector bulb, or projector lamp module).

Since these lamps can cost a lot of money, it is wise to take certain preventative measures to ensure that you get the most life out of your projector lamp as possible. Even then, it is generally recommended to keep one or more extra lamps spare in case the lamp needs to be replaced at short notice. This will greatly reduce your projector’s down time.                                                                                          

The following is a checklist of things you can do that can help ensure that you are getting the most out of your projector's lamp’s life:

• One of the easiest ways to increase the number of hours that your projector lamp works for is to operate the projector in economy mode where this is available. This means the lamp will operate at lower brightness for a longer period of time. The trade off is obviously the reduction in the quality if the image displayed.
• Lamps that fail before their recommended number of hours have usually been affected by some form of temperature stress. Make sure that when you install your projector into your home theatre, classroom or boardroom, there is plenty of space between the projector's cooling fans and any ceilings, walls, or enclosed compartments. Two feet is usually a good amount of ventilating space to leave to avoid lamps overheating.
• Remember to always let the projector cool down sufficiently before unplugging the power cord to turn off the projector. Even though you may have stopped using the projector lamp, it remains very hot and so the projector’s fans must keep operating to cool the lamp down properly. If the power cord in unplugged, the projector’s fans have no power and cannot operate so the projector bulb will remain hot for longer. This reduces lamp life.
• You should also try to avoid moving your projector unit until the projector lamp has properly cooled as described above. When the projector bulb is hotter its filament becomes more fragile, so you will want to do everything you can to minimize the level of vibration the bulb is subjected to.
• If you frequently turn the projector on and then off again, this can further reduce lamp life. When the projector power is turned on, a surge of energy is directed to the lamp by the projector ballast. This is to kick start the lamp into action. Doing this repeatedly can damage the lamp’s filament.
• As described in the section on filter cleaning and maintenance above, keeping the filters clean enables more air to circulate around the projector. This helps to keep the lamp cool to avoid temperature stresses. Some projector lamps have their own built in filter, which you should clean and maintain regularly just like the normal projector filters.                                                   
• FOR NEXT INFORMATION..PLEASE VISIT US TO:
  
  FOR NEXT INFORMATION..PLEASE VISIT US TO:
  

   Datang ke alamat Kami & Hub Kami
  
  

  PERTOKOAN Jaya Plaza,
  Jl. Ahmad Yani No. 238 Blok R-7 Bandung 40271, TELP: 022-87245883/20510410, 
  FAX : 87245883 
  www.visualprojekbandung.com

  Hp : 082119733308/

  Wa : 081910523927
  Pembayaran Via Transfer
  
  BCA
  MANDIRI
  DANAMON
  BRI
  BNI
  
  

  BANDUNG, SUMEDANG, GARUT, TASIKMALAYA, CIANJUR, PURWAKARTA, SUKABUMI, BEKASI, PADALARANG, CIMAHI,                                                                                                                                                                       

CLEAN PROJECTOR filters to increase projector and LAMP LIFE

LCD, DLP and L-COS digital projectors produce large amounts of heat during their operation. This heat must be channeled away from the projector to prevent overheating and projector malfunction. It is especially important for the life of the projector lamp that this heat is removed effectively since projector overheating is the primary cause of projector lamp failure.

Why do you need to clean your projector filters?

To remove the build up of excess heat, digital projectors have one or more fans which force air around the projector’s operating parts. Since the air contains dust and other particles, the air must be filtered before it cools the projector to prevent the build up of dust on the projector’s moving parts. If this were to happen, the build up of dust would actually insulate the projector and keep heat inside the projector unit which could be very damaging, especially to the projector lamp. Also, dust can get on to the LCD panels and the projector lens, reducing the quality of the displayed image or interfering with the colour of the image projected.

As a consequence, all projectors have filters, which is inevitably where all the dust particles removed from the air end up. To ensure that these filters keep performing well, they must be maintained regularly. This is very important since damage to the projector caused by dirty filters may not be covered by the projector warranty.

How often should I clean my projector filters?

How often you clean your projector’s filters will depend on the environment in which the projector filters are working. An environment that has minimal dust will mean that the filters will not need to be cleaned as often as an environment with lots of dust, such as in a classroom where chalk dust can be a problem.

Generally, projector manuals recommend that cleaning the filters once every 100 to 300 hours is usually acceptable, but you should check your projector’s manual to find out what the recommended filter cleaning cycle specific to your projector is. Remember that you should also clean or replace your filters whenever you notice an excessive build up of dust.

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FAX : 87245883 
www.visualprojekbandung.com

Hp : 082119733308/022-21206869 

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PENJUALAN BRACKET(CEILING MOUNT) PROJECTOR MURAH BANDUNG

Kita merupakan salah satu Produsen Bracket Projector....
apapun model yang anda butuhkan kami siap melayaninya..
masalah harga ..sangat-sangat Negosiasi....
baik untuk quantity satuan maupun quantity puluhan kami siap melayani anda dengan qualitas yang pastinya anda akan sangat puas









   









 

Kunjungi kami di :
Jaya Plaza,
Jl. Ahmad Yani No. 238 Blok R-5 Bandung 40271,
TELP: 022-87245883/72232572,
FAX : 87245883
Hp : 082119733308/022-21206869  

BANDUNG, SUMEDANG, GARUT, TASIKMALAYA, CIANJUR, PURWAKARTA, SUKABUMI, BEKASI, PADALARANG, CIMAHI, 

PROJECTOR ANDA OVER CONTRAS.......KENAPA?????

            Over Contrast pada proyektor bisa saja disebabkan oleh beberapa hal, dominan symptom pada kasus ini dapat terjadi karena:

        1.    Settingan echo mode projector lamp ADVANCE yang dijalankan untuk beberapa waktu yang lama, padahal echo mode projector lamp dengan setting NORMAL/DEFAULT sudah cukup, sehingga kerja mainboard dan chip lamp tidak memaksa.
        2.    Flexible cable pada setiap slot komponen proyektor sudah tidak berfungsi secara maksimal, yang mengakibatkan electrical impuls tidak berfungsi dengan baik.
       3.    VGA Board, Video Board sudah infungsional
       4.    Frequency Output source tidak sesuai dengan  Frequency Input source yang dihasilkan oleh proyektor.

Gejala diatas memang sangat jarang ditemukan, karena manufaktur untuk projector telah di set secara auto untuk mengenali source intput & output frequency.


jika anda membutuhkan solusi silahkan
Kunjungi kami di :
Jaya Plaza,
Jl. Ahmad Yani No. 238 Blok R-5 Bandung 40271,
TELP: 022-87245883/72232572,
FAX : 87245883
Hp : 082119733308/022-21206869 

STORING and TRANSPORTING your PROJECTOR

           When you first unpack your new projector, ensure that you safely store away the packaging the projector came in. If in the future it is necessary to transport your projector to another location, storing the projector in anything other than the original box and packing means that there is a higher risk of damage being incurred in transportation. Original packaging will often have protective Styrofoam moulded to the exact shape of the projector to prevent the projector moving while in transit.                                                          If you are shipping your projector, it is advisable that you insure the shipment since the delicate construction of projectors means that they can become damaged in transit.                            When transporting your projector you should try to avoid leaving the unit in environments of extreme temperatures. Cars can become very hot in the summer time and also very cold in the winter. On aeroplanes the cargo hold can be very cold indeed which can also cause damage to the projector.

FOR NEXT INFORMATION..PLEASE VISIT US TO:

Jaya Plaza,
Jl. Ahmad Yani No. 238 Blok R-5 Bandung 40271 TELP: 022-87245883/72232572, 
FAX : 87245883 
www.visualprojekbandung.com

Hp : 082119733308/022-21206869 

BANDUNG, SUMEDANG, GARUT, TASIKMALAYA, CIANJUR, PURWAKARTA, SUKABUMI, BEKASI, PADALARANG, CIMAHI,