FAQs - TV
What is“Auto power-off when there is no operation performed"?

When no TV operation is performed for more than 3 hours, the TV to automatically power off.
Note: “Disable” is the factory preset value.

How to do when LCD TV has no power?
  • Check if you pressed POWER on the remote control unit.
  • If the indicator on the TV lights up red, press POWER. 
  • Is the AC cord disconnected? 
  • Has the power been turned on?

What is Ecology setting?

When Ecology set to “Yes”, The TV activates the following power saving mode.

  • “OPC” set to “On”
  • “Standby Mode” set to “Mode 2” 
  • “No Signal Off” set to “Enable” 
  • “No Operation Off” set to “Enable”
  • “Power Management” set to “Mode 1”

 

What is digital TV?

Digital TV is an alternative method of broadcasting the images and sound that appear on TV screen. Rather than being broadcast as a continuous analogue signal, the signals are sent as discrete bits of information. Digital TV improves picture quality and eliminates problems such as ghosting and snowing.

Digital TV is also capable of providing new features and services such as high definition TV (HDTV) programmes, interactive services, mobile reception, widescreen pictures, surround sound audios, multiple viewing angles, multi-channeling, closed-captioning and electronic programme guides. Digital TV may be transmitted via radio-communications (i.e., terrestrial), satellite, cable or broadband network.

What possible benefits will digital TV provide?

Digital TV is a far more efficient and flexible transmission system than the current analogue system. It allows broadcasters to offer viewers a range of new and different services. The possible benefits include:

  • 'Ghost free' reception
  • Widescreen 16:9 pictures
  • Standard definition television (SDTV) and HDTV programmes 
  • High quality audio and surround sound
  • Multi-channel programming 
  • Closed captioning of programmes for the hearing impaired
  • Electronic Programme Guides (EPGs) with 'now & next' programme information for some channels
  • On-screen programme guide channel with today's programme information
  • Multi-camera views and enhancements during selected programmes

Interactive television services, including interactive programmes, selected Internet services, home shopping, computer games, etc., can be provided by digital TV.

What are the differences among high definition television (HDTV), standard definition television (SDTV) and the conventional analogue television?

A picture on the TV screen is formed by a large number of small dots called pixels. The higher the number of pixels, the better the picture quality will be. The pictures of conventional analogue TV broadcasting provide a maximum of 720 (horizontal) x 576 (vertical) pixels. Typically the pictures of HDTV broadcasting provide a resolution of at least 1024 horizontal pixels and 720 vertical pixels and hence they have a better picture quality than those of analogue TV broadcasting. HDTV pictures are usually displayed on a wide screen (aspect ratio 16:9, i.e., the ratio of picture width to height) format, instead of the usual square screen (aspect ratio 4:3) format of conventional analogue TV pictures. Together with the ability to support multi-channel sound system, HDTV broadcasting enables viewers at home to have same experience as watching a movie in a cinema.

Standard definition TV (SDTV) broadcasting can be considered as the digitized version of the conventional analogue TV broadcasting, both of which have the same screen format and picture resolution. However, SDTV pictures are free from "ghosting" and "snowing", which are commonly found in analogue TV pictures.

SDTV and HDTV are two of the main features supported by digital TV.

Is audio quality better on digital TV than on analogue TV?

Yes. Digital television will be transmitted with MPEG digital stereo sound or multi-channel sound, thereby providing markedly superior audio quality.

Is digital TV available in Hong Kong?

Digital TV is now available through terrestrial free TV and also being offered by all pay TV operators in Hong Kong via cable, satellite or broadband network.

When is digital terrestrial TV available?

The existing two terrestrial television broadcasters Asia Television Limited (ATV) and Television Broadcasts Limited (TVB) have launched digital terrestrial television (DTT) broadcasting on 31 December 2007 in some areas. DTT services will be rolled out territory-wide in Hong Kong by phases.

What is the transmission standard of digital terrestrial TV for Hong Kong?

Hong Kong adopts a market-led approach to the selection of transmission standard of digital terrestrial TV. The two terrestrial TV broadcasters ATV and TVB submitted proposals to the Government at end December 2006. They propose to adopt the National Standard for DTT transmission. The Office of the Telecommunications Authority (OFTA) completed the evaluation of the proposals and the Telecommunications Authority (TA) has decided to adopt the National Standard as the transmission standard for DTT in Hong Kong.

Will digital terrestrial TV continue to be free?

Digital terrestrial TV has the capability of providing both free and pay services. The existing analogue terrestrial TV services, which are simulcast in digital form, have continued to be provided free of charge. Furthermore, according to their investment plans approved by the Broadcasting Authority, ATV and TVB also provide new digital TV services (including HDTV programmes) free of charge.

Are HDTV services available in Hong Kong?

HDTV services can be provided over different digital broadcasting platforms such as satellite, cable, terrestrial and broadband TV network. HDTV services have been launched in economies like United States, Europe, Japan and Australia. In Hong Kong, since digital terrestrial TV (DTT) broadcasting was launched on 31 December 2007, consumers are able to enjoy free-to-air HDTV broadcasts in areas under DTT coverage. Apart from HDTV broadcasts, consumers may also enjoy recorded HDTV movies/programmes using HD video players/recorders.

How can I receive digital terrestrial TV?

Normally, people in low-rise buildings use stand-alone rooftop TV antenna while those in high-rise buildings use communal aerial broadcast distribution (CABD) system to receive terrestrial television. In the former case, the antenna should be able to receive the new digital television services provided that it is in reasonably good condition; in the latter case, the building management will have to add suitable converters to the CABD system in order to receive digital terrestrial television. In addition, you will need to buy an integrated digital TV set or add a set-top box with digital terrestrial TV reception capabilities to your existing TV set.

What does a set-top box or an integrated TV set do?

The basic function of a set-top box is to receive and decode digital TV signals for display on a TV set. Other functionalities of a set-top box depend upon its specifications. For example, some set-top boxes support both SDTV and HDTV. Some set-top boxes may even provide viewers with datacasting services and video, audio and data enhancements. In general, the more functionality a set-top box has, the more expensive it will be.

An integrated TV set is a TV set that has a digital TV decoder built in. Such TV sets are capable of both decoding and displaying digital TV signals. Depending on its specifications, an integrated TV set can support both SDTV and HDTV, or even datacasting services.

What happens to my existing analogue TV set or flat screen TV set? Do I have to switch to digital TV to continue receiving the existing free TV services?

The existing free-to-air broadcasters are simulcasting (i.e., broadcasting in both analogue and digital format) their existing four programme channels before the switch-off of analogue broadcasting. Viewers can therefore continue to be able to use their current analogue TV sets or flat screen TV sets to receive the existing free TV services at the simulcast stage. However, viewers using such TV sets will not be able to enjoy the enhanced features or new services of digital terrestrial TV unless they add to their existing TV sets a set-top box with digital terrestrial TV reception capabilities or use integrated digital TV sets. After analogue switch-off, all viewers will need to have a set-top box with digital terrestrial TV reception capabilities connected to their existing TV sets or an integrated digital TV sets in order to receive terrestrial TV.

Will I need to upgrade my antenna system?

The channels being allocated to digital terrestrial TV are mainly adjacent to existing analogue channels. If your existing antenna is in reasonable condition and is presently providing good reception, it should be able to receive the new digital television services. For a communal aerial broadcast distribution (CABD) system installed on a multi-storey building, although it can share the same antenna, there will be a need to install additional amplifiers/converters for the digital terrestrial TV (DTT) channels. The Office of the Telecommunications Authority (OFTA) has issued the specification and guidelines for the reception and distribution of DTT signals in buildings. Incorporated owners and building managers are advised to check and, if necessary, upgrade their CABD systems for DTT reception if their buildings are located in the initial coverage areas of the DTT broadcasting.

What is the coverage of the digital terrestrial TV?

The digital terrestrial TV (DTT) was launched on 31 December 2007 and signals are transmitted by the main transmitting station at Temple Hill. The initial coverage includes Kowloon peninsula, northern Hong Kong Island, Shatin and eastern Lantau Island (covering around 50% of the population). Members of the public may check the coverage information on a building-by-building basis from a database service provided by the Office of the Communications Authority. Subsequent to more DTT transmitting stations to be completed by phases in 2008 and onwards, the DTT coverage will expand accordingly and the areas under coverage will be published in due course.

Will my Video Cassette Recorder (VCR) or DVD Recorder still work?

Yes. During the simulcast period, the existing video recorders such as VCRs and DVD Recorders will be able to record any analogue programme while a different digital programme is being viewed. Current video recorders will only be able to record TV programmes with conventional TV or SDTV picture quality.

During and after the simulcast period, viewers will be able to record the digital programme channel being viewed, provided that their set-top boxes or digital television sets have an analogue output. However, since VCRs employ analogue technology, the picture quality of recorded digital programmes for SDTV will only be similar to that of analogue programmes. Current video recorders may not be able to record HDTV programmes.

In some cases, as the frequency channel used by the RF output of VCRs may be the same as that used by digital TV signals, the RF output of such VCRs may need retuning or require the use of audio/video (A/V) connection.

I am told that there are new TV sets available in the market that are ready to receive the

Digital terrestrial TV service is now available in Hong Kong. You will need an external decoder or set-top box for receiving and decoding digital TV signals for display on the TV set; or you may buy an integrated digital TV set that have a built-in decoder.

I am a pay TV subscriber and the service provider has already provided me with a set-top box. Can I use the same set-top box to receive the future digital terrestrial TV services?

Basically no, because terrestrial and pay TV services use different broadcasting platforms and technologies. For instance, pay TV services available in Hong Kong are provided over cable, satellite or broadband platform, while digital terrestrial TV (DTT) will be transmitted via terrestrial radio wave. The respective pay TV operators also employ special control mechanism to avoid unauthorized reception of their services.

However, there exists pay TV service provider who offers newly-designed set-top box equipped with not only basic input port for the pay TV signal, but also additional input port for the free DTT signal. Subscribers can choose to purchase or rent this type of set-top box capable of receiving its pay TV programme services as well as the DTT programmes, without the need to install additional decoder to watch DTT. Nevertheless, consumers are advised to check in detail with the pay TV service provider whether the offer suits their needs, such as the respective arrangement of services offered, terms and conditions to be bounded, and whether the set-top box, if purchase option is chosen, are still able to view DTT after the pay TV service is terminated, etc.

What do I need in order to watch HDTV?

HDTV is one of the main features supported by digital TV. To watch HDTV, you have two options. The first is that you may choose to buy a set-top box capable of decoding HDTV signals and a TV set capable of displaying HDTV pictures. Alternatively, you may choose to buy an integrated TV set capable of both decoding and displaying HDTV signals.
HDTV set-top boxes for pay TV services are provided by the pay TV operators concerned. HDTV set-top boxes for the reception of terrestrial HDTV broadcasts are available in the market.
If you want to watch recorded HDTV movies/programmes, you need to have a compatible HD player/recorder.

What are the basic requirements of a TV set in order to view HDTV?

HDTV is one of the main features of digital TV. TV sets for viewing HDTV (so called "HDTV Ready") should have at least the following basic features:

  • having wide screen aspect ratio of 16:9;
  • supporting 720p (720 lines using progressive scanning) and 1080i (1080 lines using interlaced scanning) HDTV picture formats.; and 
  • having built-in HDTV input terminals like YPbPr.

Note 1: Progressive and interlaced scanning are the two TV display methods. TV pictures using 720p or 1080i should yield compatible good picture quality under normal applications.

Note 2: Although some TV sets now available in the market have been marked "HDTV Ready", you should check with the retailer whether they support the above minimum requirements of HDTV.

What is the HDTV format for Hong Kong?

HDTV is one of the main features supported by digital TV. Its format includes the signal format of TV studio production/transmission such as resolution (e.g. 1920 x 1080i, 1280 x 720p) and aspect ratio (e.g. 16:9). The HDTV format for Hong Kong supports the features mentioned by using 720p and/or 1080i scanning method. There are available set-top boxes and integrated TV sets supporting multi-format HDTV signals in the market.

Can I use my existing TV set such as flat screen TV set to watch HDTV?

It depends on what you have now. If you already have had an "HDTV Ready" TV set which allows the display of high resolution pictures, then you will need to add a set-top box capable of decoding HDTV signals.
If your existing TV set is neither "HDTV Ready" nor "HDTV Compatible", you must have a suitable set-top box that can down-convert HDTV signals for display in SDTV or analogue format.

Are those flat panel TV sets now available in the market able to support HDTV?

Most of the latest models of flat panel TV sets for sale in retail shops should be able to support HDTV. But you should check with the retailers or suppliers whether the basic features mentioned for a "HDTV Ready" TV set are fully supported. It should be noted that some old models of flat panel TV sets support SDTV only, while some others are in fact "HDTV Compatible" which accepts HDTV video signals, but shows pictures in SDTV format only. If in doubt, you should consult the relevant retailer/supplier and ask for a demonstration.

Why is the resolution of HDTV sets available in the market different from the often-claimed HDTV resolution 1920 x 1080i or 1280 x 720p?

HDTV usually quotes a resolution of 1920 x 1080i or 1280 x 720p, which is the signal format of TV studio production/transmission. However, it is not necessarily the same as the display resolution of a HDTV set since the display picture quality of an HDTV set also depends on other factors such as the internal signal processing arrangements. You may find HDTV sets in the local market with display resolution of 1024 x 1024, 1280 x 768, 1366 x 768, 1920 x 1080 or even 960 (half of 1920) x 540 (half of 1080). They are optimized to produce good HDTV pictures.

There are LCD computer displays with widescreen and a DVI input terminal, which seem to fulfill the basic requirements for HDTV, but there is no information about whether they can support 720p or 1080i HDTV format. Can they be used to receive the future free-to-air HDTV services in Hong Kong?

There are low-cost LCD computer displays of some 20 inches (length in diagonal) having an aspect ratio of 16:10 in the local market. Unless otherwise specified, LCD computer displays support only progressive scanning and certain resolution formats. Although they may provide a resolution even higher than that required for HDTV playback, they are designed to work with a personal computer (PC) and may not be able to accept the output signals direct from an HDTV set-top box. If you want to enjoy free-to-air HDTV services through a widescreen LCD computer display, you will need to add a compatible digital TV tuner card (or in the form of an USB device) in your PC or buy a set-top box for such an LCD computer display. Consumers may pay attention to the latest market situation for such digital TV tuner cards/USB devices for PCs or digital TV set-top boxes for LCD computer displays. When buying an HDTV Ready TV set, you should ask the relevant retailer or supplier about its specification to ensure that it supports the common HDTV formats of 720p and 1080i.

What are other things I need to be aware of when buying a new TV set for viewing HDTV?

You should assess your own needs and also take into account your home environment and budget constraints. For example, there are different kinds of display technology like Cathode Ray Tube (CRT), Plasma Display Panel (PDP), Liquid Crystal Display (LCD) and more to be introduced in the market soon. These display technologies have their own pros and cons. The prices of TV sets vary a lot depending on the display technologies, brands, screen size, performance and other advanced functionalities.

What are the prices of digital terrestrial TV receivers?

The digital terrestrial TV receivers is for receiving both high definition television (HDTV) and SDTV programme channels and the cost of set-top box is about HK$400 to over a thousand Hong Kong dollar depending on the features equipped.

How can I obtain more information about digital TV?

You may visit the web site of the Office of the Communications Authority (www.ofca.gov.hk) or the Communications and Technology Branch of Commerce and Economic Development Bureau (www.cedb.gov.hk) for more information about digital TV in Hong Kong.

Whom should I contact if I have questions about digital TV?

You may contact the Office of the Communications Authority for other questions about the technical aspects of digital TV in Hong Kong by any of the following methods:
(a) E-mail: dtv@ofca.gov.hk
(b) Tel: 2961 6333
(c) Fax: 2803 5113

How to enable Interactive TV service MHEG-5 when viewing DTV?

Press the “Red” or “Yellow” color button on the remote control unit to display Interactive TV service.

How to exit interactive TV service in SHARP GX3DH series iDTV?

Press “RETURN” button on the remote control unit to exit Interactive TV service.

What is OPC (Optical Picture Control)?

OPC is automatically adjusting the screen to suitable backlight brightness according to the lighting conditions.

How to exit interactive TV service in SHARP D65H and G77H series iDTV?

Press “EXIT” button on the remote control unit to exit Interactive TV service.

How to switch audio language when receiving a NICAM bilingual signal?

Press “MPX” button on the remote control unit to switch audio language.

The black bars are included in the DTT channels broadcasted image on the sides of the program use 16 : 9 widescreen TV?

The DTT channels will always be broadcast in 16:9 widescreen formats. If the program is 4:3, then black bars will be included in the broadcasted image on the sides of the program.

What is Quattron Technology?

Revolutionary Quattron technology creates a new pixel structure with three primary colors of red, green and blue (RGB) plus yellow (Y) and employing a four-color filter RGB+Y. The technology expands the color gamut and faithfully rendering brighter yellow, crystalline bluish green and glaring gold.

What is Quad Pixel Plus Technology?

Quad Pixel Plus enhances the Quattron technology to realize finest and sharpest image that conventional RGB sub-pixels never achieved before. Brightness of new RGB+Y sub-pixels can be controlled independently, creating a finer contour for more enjoyable viewing experience.

What is X-Generation Panel?

X-Gen Panel incorporates SHARP’s exclusive UV2A photo-alignment technology, precisely controls the alignment of liquid crystal molecules. The advanced pixel structure utilizes a wider aperture ratio, allowing more light to pass through and creating a brighter white. Conversely, deeper black is realized as the pixels are better sealed to minimize light leakage.

What is H.264?

H.264, also known as MPEG-4 Part 10, is a kind video compression and coding technology written by MPEG together with the International Telecommunication Union Telecommunication Standardisation Sector (ITU-T) Video Coding Experts Group.
H.264 greatly improved compared to MPEG-2 compression performance, can be in the same image quality, bandwidth can be reduced to half or less.

What is 3D TV?

3D TV is the use of the visual characteristics of the eye to produce a 3D stereoscopic sense. Because the different positions of the left-eye and right-eye, each eye of the observed scene there are subtle differences reason for this difference is generated 3D stereoscopic sense. Use of this technology viewer can enjoy a 3D television program at home.

What is 3D Active Shutter Technology?

With active shutter technology, lenses in special 3D glasses turn on and off in synchronization with 2 parallax images in slightly different angles for left and right eyes respectively. 3D stereoscopic images will be interpreted by brain from the parallax images.

What is Internet TV?

Internet TV is equipped with AQUOS.NET function TV.
User can use AQUOS.NET function browse YouTube, Picasa, Twitter, Facebook or different website.

How to clean LCD TV?

Unplug the AC cord from the AC outlet before cleaning the product. Use a damp cloth to clean the product. Do not use liquid cleaners or aerosol cleaners.

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