Method and system for reforming digital cable television broadband network into two-way

A technology for cable TV and digital TV signals, applied in the direction of two-way working system, transmission system, electrical components, etc., can solve the problem of not being able to achieve two-way interaction, and achieve the effect of low cost

Inactive Publication Date: 2007-08-29
北京汉辰科技有限公司
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Problems solved by technology

[0002] The existing digital cable TV broadband network HFC is a one-way transmission. Since there is no retu

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  • Method and system for reforming digital cable television broadband network into two-way
  • Method and system for reforming digital cable television broadband network into two-way

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Embodiment Construction

[0018] Fig. 1 is a two-way digital cable television broadband network constructed according to the present invention. By providing a wireless transmission network, the invention transforms a one-way cable TV network into a two-way digital cable TV broadband network to realize multimedia interactive TV. The HFC network 1 in Fig. 1 is a typical mixed unidirectional broadband network of optical fiber and cable in a unidirectional cable TV network. It is used here to transmit downlink broadband digital TV signals and other broadband multimedia digital signals. This standard one-way cable TV network structure is widely used. The WiFi network 2 in FIG. 1 is a wireless transmission network for transmitting uplink signals according to the present invention, and its specific structure and working principle are described in FIGS. 2A and 2B . In the present invention, the WiFi network 2 transmits signals through IEEE802.11a / b / g protocol and IP mode. The combination of the two networks ...

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Abstract

Using wide band HFC of digital cable TV transmits down going digital TV signal in wide band and other digital signal of multimedia in wide band. Using wireless transmission network based on WiFi transmits up going signal. It is needed for method to use different transmission modes to feedback upgoing signal and to transfer down going multimedia TV signal in wide band. Using large-scale overlay structure of WiFi network provides all new network access mode, and ubiquity network connection. Thus, at any time and any place, user can realize multimedia interaction in wide band. The unidirectional digital cable TV signal in wide band becomes bidirectional digital cable TV signal in wide band possessing interaction function.

Description

technical field [0001] The invention relates to the field of digital cable TV transmission and wireless transmission, in particular to a method and system for transforming an existing one-way digital cable TV broadband network into a two-way digital cable TV broadband network with a two-way interactive TV function. Background technique [0002] The existing digital cable TV broadband network HFC is one-way transmission, because there is no return channel, only one-way digital TV broadcasting can be realized, and two-way interaction cannot be realized. However, the ever-increasing variety of multimedia applications such as video on demand, music on demand, sending and receiving e-mail, TV business, online shopping, personalized services, etc., requires digital TV operators to provide users with two-way interactive functions, which requires the network to have two-way channels . [0003] At present, the main method to solve this problem is to transform the digital cable TV br...

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Application Information

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IPC IPC(8): H04N7/173H04N7/14H04L29/00H04N21/60
Inventor 秦绮玲刘亚平
Owner 北京汉辰科技有限公司
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