Digital Tv Set
Mr. Huang Qilong, Shenzhen City, De Witt Digital Video Technology Co., Ltd. R & D center assistant manager.
Editor’s Note: December 28, 2004, Hangzhou, digital television has announced: Hangzhou digital TV users has reached 100,000, an average of every five families in Hangzhou have a digital TV users. March 28, 2004, Hangzhou launched digital TV. Not long ago, appearing distant digital television, has officially entered the Hangzhou people’s lives. TV shows clearer pictures, watching more TV channels, video on demand can also be … …
Present, China’s digital television, radio, video on demand, data broadcast and broadband IP and other services are fully operational, set-top box as the achievement of these business user terminal, in the entire business operation plays a very key role. There are two set-top box, a digital code by receiving the TV signal (from the satellite or cable TV, use MPEG compression), to obtain clearer and more stable picture and sound quality, this set-top box known as TV set-top boxes . Another set-top box that contains the operating system and Internet browsing within the software, through the telephone network or cable television network connected to the Internet, use the TV as a monitor, enabling access to the Internet without a computer, this set-top box called the network set-top boxes, home set-top box that is the a kind. Single function of the products have been moving towards death, the new set-top boxes have integrated the functions of the above, the author of a set-top boxes on several of the more attractive direction.
Start from the nineties of last century, telecommunications networks and the Internet have experienced a magnificent period of great development and the development of mutual integration of their development and integration of people’s lives has a huge influence. Today, mobile phones and computers have changed the way people lived, and to a colorful personal life into the digital age.
As a “triple play” of another network of digital television is still in its early days. Digital television signals after the birth of set-top box to solve this problem analog TV to watch digital TV. If this role is only starting from the set-top box can determine the set-top box is a transitional product, the popularity of digital TV set-top box will be eliminated. But the set-top box is not easily exit from the stage of history, set-top boxes will be given more and more features, and even beyond digital television in this area.
More features, more interfaces, more personalized set top box design will gradually form a diversified product range. Set-top box or even a home multimedia center, to meet the varied needs of the digital home. In addition to developing its own characteristics, set-top box business other than the integration of a growing number of telecommunications services and data services to various business penetration.
The long run, the expense of set-top box software and hardware features to reduce the set-top box price is certainly not the set-top box way out. Attractive features and services to allow users to find value for money, to give operators bring good returns. The following set-top boxes to explore a few of the more attractive direction.
A high-quality audio and video output
Generally support the current standard-definition set-top box’s video output, support for MPEG-2 audio decoding standard, with composite video and audio output interfaces, compared to the previous analog cable, users in the visual and auditory effect, do not feel to the nature of changes. Digital TV operators claim clearer than analog TV, there is no “snow” phenomenon, in fact, a good place in the signal, analog TV is equally clear.
To support high-definition and Dolby Digital technology, set-top boxes, video and audio effect, in the greatly improved. If the front-end digital TV technology with high definition video encoding format and Dolby Digital audio encoding format, then through the set top box audio output to Dolby Digital home theater system, coupled with the high-definition TV, users can experience the multi-channel sound in the home Digital stereo and clear realistic program to bring the shock. This pursuit of high-quality end of life has great appeal to users.
To achieve high-quality audio and video output, set-top box client needs to support high-definition decoding and Dolby Digital audio decoder chip, the software features and compared to the current set-top box is not much difference. Now the problem is the lack of HD programming front-end sources and Dolby Digital program source, making high-end set-top box just to stay on display at the exhibition stage.
Two programs to record If the user wants to show collections of interest, you can section catalog down. For example, users can be World Cup fans the game recorded, for very gradually appreciate. Needed to achieve program recording set-top boxes with hard drives and set-top box software to implement the corresponding capabilities. If users want to watch the program A, while recording program B, then also need to set-top boxes to support two-way transport stream end of the demodulation: the way for programs to watch, one is used to program recording.
Many set-top box chips support IDE hard disk interface, set-top box manufacturers can easily extend the functionality in set-top box. Can even consider allowing set-top box via USB interface, support for external mobile hard drive, to facilitate the users to store recorded programs, or other information.
Program recording on set-top box and a lot of interested users, but at present there is not much choice, because carriers generally do not purchase a set-top boxes with hard drives, do not have the program recording.
Three storage and playback of multimedia files
Users can use digital cameras, mobile phones, digital cameras and other digital photo shoot, digital video through a standard interface to input to the set-top box store, a person can sit here or watching at any time. Users can also format the MP3 and other music files stored in the set-top box.
Storage requirements of these multimedia files set-top boxes with hard drives, and external interfaces to support the appropriate standards. To view or play multimedia files stored, set-top boxes also need the appropriate software features support, such as image viewer, video player, MP3 player; even consider CD or DVD features into set-top box that allows users to directly set-top box, or DVD disc CD player.
Rich multimedia set top boxes will become the home entertainment center.
4 video on demand
Two-way platform-based video on demand service, will fully meet the needs of the user’s personalized program. Users at home can enjoy watching the shows on demand, no longer
I am a professional writer from China Toys Suppliers, which contains a great deal of information about acrylic keychain , decorative key holder, welcome to visit!
Processing your request, Please wait....
