Paper on the operational principles of digital cable technology
Summary: as science and technology continue to evolve and progress, digital television has been given a good space to develop, while maintaining a good momentum, and corresponding digital television equipment technologies are undergoing continuous improvement and development. Digital television is, to say the least, the road to future development in the area of television in our country and in the world. The author conducts a detailed analysis of the underlying principles of digital television technology while exploring its future trends。
Keywords: digitization; cable television technology; operating principles; trends
Given the current era of rapid developments in information technology and science and technology and the subsequent acceleration of the development of digital cable television, it is landmark that digital cable television technology will replace our traditional television technology with its unique advantages and that its full application to new digital control technologies will enable television technology to leapfrog its future course. In sum, the advent of the digital age provides an excellent opportunity for the development of a potential southern wind for television technology。
1 overview of digital cable television and its main technical operation
The so-called concept of digital cable television, which is essentially a product of digital technology developed by today's high-tech high-tech development, is primarily aimed at traditional analogue television, which is simultaneously called the sum of a complete digital television system. Typically, it refers mainly to the corresponding programme collection and production and editing, as well as to the broadcast signal transmission system of digital television. In general terms, digital television signals are made up of zero and one number throughout the system。
Digital television is no longer in the traditional sense of the term, and digital television in the modern sense is primarily about the delivery of images that can be effectively implemented in all its dimensions, with corresponding data and language services. Digital television can better provide a clear picture of the audience and more channels, and digital technology is essentially the corresponding integration of multiple digital media, and the effective use of digital technology can lead to more media services to the outside world and to one-to-one and more-to-one modes of communication。
1. 1 the decodering of information resources referred to here is dominated by video decoderms, which are widely used in the field of digital cable television development, especially in high-resolution television technology in digital television systems, where digital television systems can effectively improve the overall compression of the most difficult video signals relative to traditional television technologies. In general, the 1,920 display model referred to by the corresponding professional has been used to compress the corresponding digital signal from 990 mbi/ts to around 30 mbi/ts, which, after similar digital compression, will enable it to provide better information resource conditions for computer processing systems, as well as better job distribution for digital television channels available or likely to be available in the future. In today's digital signal compression and decode technology development in our country, the compression technology for digital television signals can essentially achieve more reasonable standards。
1. 2 audio-coding the main function of audio-coding in digital television technology is to effectively compress sound information, which can normally be made of higher quality than traditional audio through some digital compression. So, while digital cable television is playing, its acoustics are not transmitted as well as the audio we think they are, we should take steps to add the corresponding compressed coding processes to the digital television accompaniment process. In our current process of audio encoding and decodement, the mpeg-2 audio compression standard, commonly used in a number of countries and regions, such as europe and japan, is generally based, however, on the fact that some of the standards adopted in the 1990s do not meet the needs of today's digital television development as a result of the development of the times. Thus, in today's trend towards digital cable television, some countries have begun to replace traditional audio coding standards with more advanced mpeg--4avc standards。
2 optimization of digital cable television technology
As science and technology continue to develop and mature over the past year, digital cable television systems have become increasingly rich in content, and the full use of technologies such as fibre-optic and digital technology has made cable television programmes more widely available, as well as improved television channel signals and effective quality of transmissions. It has also resulted in an increase in the number of transmission channels and a two-way interaction between television programmes and data messages, leading to greater achievements in information technology in cable technology systems. For digital cable technology to be further optimized, it should start with the following specific points。
2. 1 increased implementation of the two-way restructuring project of the hfc network, known as the network structure of the hfc network, is primarily referred to as the network system for the mitigation of fibre-optic cables, a new type of network technology with a good development space. The two-way restructuring of the network is in fact based on the actual situation in the areas covered by the network, the construction and resting of the fibre-optic backbone network in the ring or star form, and the downward adjustment of the light point height to the best of its ability to ensure that the size and scope of users of the distribution system for the same axle cables is reduced, thus further optimizing the design of information dissemination channels。
Today's digital cable has introduced a series of changes in our traditional television technology, mainly as a result of the adaptation of traditional modes of transmission from one-way to fixed transmissions from traditional technologies to today's wide-ranging and first-time two-way transmissions of information. At the same time, a shift in mobile modes of communication has led to effective improvements in traditional models of television technology services, which have shifted from a more monolithic to modern and advanced digital, pluralistic and personalization services. Further improvements have been made in the operational and managerial ways in which traditional television technologies are operated in a way that is less energy-efficient, more scale-effective and more discrete, and that is gradually becoming today's digital technology aggregate, large-scale and efficient. This has led to the gradual transformation of digital cable from the closed nature of traditional television technology to openness and integration. At the same time, there has been a gradual shift from traditional public goods to the economics needed in today's field of television technology。
Today, cities in most parts of the country have achieved an overall digitalization of cable, with nearly 20 million users of digital cable, and the overall digitalization of urban cable has been effective in creating an important platform for communication between the government and the population, thus enabling internet digital technology to deliver better economic and social benefits。
Main trends in digital cable television
As a result of the continuous development of science and technology and the continuous progress of society, the digital development of television has gained a good space and trend, which will be an important step in the history of television technology development. In response to reality, we have summarized the trend of digital cable television development in the following parts: 1) digital television technology has been widely used throughout the country thanks to the strong support of our government, and has shown a very good pattern of technological development in television. 2) the digitized cable roof box occupies part of the space and affects the beauty of the television set. It is therefore important to achieve digital integration in the future development of digital television, where digital information is received and internalized, and where user requirements are met in aesthetically, so that it can be directly coded and decoded, both easily and quickly, and one of the necessary paths to digital cable development in the country. 3) digital cable television in the family needs not only a good viewing effect and quality of viewing, but also some video interaction and chat functions, as well as effective delivery of information, which is the main goal of the future development of digital cable in the country。
4 concluding remarks
With the rapid development of information science and technology on a global scale, which has led to the gradual introduction of digital information into television technology, it can be said that, to date, most television systems have largely been digitalized, which is landmark in today's information technology revolution, and digital cable technology will certainly require the combined efforts of a wide range of scientific staff to make a better and faster leap forward。
