Remote controlled single channel outputting method for concentrating controller in digital analog Tv-set

A digital analog and controller technology, applied in TV, cable transmission adaptation, electrical components, etc., can solve the problems of unacceptable users, increased number of black households, easy decryption, etc. Effect

Inactive Publication Date: 2005-05-11
梁光海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, CA encryption conditional access to digital TV has the following problems: First, the price and cost of the entire system are high, especially CA encryption conditional access is very expensive
Second, the price of one digital set-top box per household is too high for users to accept
Third, it will also be attacked by hackers, and there will be pirated cards and cracks. In the user's home, it can also be connected indiscriminately, and the signal can be cracked.
Fourth, increase the amount of maintenance. Due to cracking at home or other factors, human failures are likely to occur, making cable TV operators busy with maintenance
Fifth, it is not conducive to two-way transmission
The disadvantages are: (1) The price of the descrambling set-top box is relatively high, and it is difficult to implement it in the entire wired network due to cost constraints, and the investment is large, and the wired station cannot afford it
(3) Whether it is a group solution or a single solution set-top box or a digital set-top box, it is a "household appliance" device that is used in the user's home, with poor security and difficult maintenance. It is also easy to decrypt due to the way it is used
(4) Poor two-way transmission performance
[0009] To sum up, there are deficiencies and defects in the CA conditional access of digital TV or analog TV to the charging of cable TV network, especially in the process of digital TV gradually replacing analog TV, the coexistence of digital TV and analog TV Under the circumstances, two sets of CA conditional reception systems for analog and digital TV should be used respectively, which increases the investment of cable TV stations, and cannot reliably and effectively charge and prevent stealing, peeping, and deciphering digital and analog cable TV signals anywhere.
It also cannot be compatible with transmission control management during the transition period between analog and digital, let alone effectively carry out control management of various value-added services

Method used

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  • Remote controlled single channel outputting method for concentrating controller in digital analog Tv-set
  • Remote controlled single channel outputting method for concentrating controller in digital analog Tv-set
  • Remote controlled single channel outputting method for concentrating controller in digital analog Tv-set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The invention has an innovative point of adopting a unified scrambling method for digital TV and analog TV. For digital TV, it is a scrambling method that superimposes a random scrambling pulse signal and performs real-time scrambling control to make digital TV signal sound and image Nothing or mosaic phenomenon appears in the image, and there is no visibility at all. like Figure 5 As shown, where (a) is the digital modulation signal before scrambling, (c) is the scrambling control signal, and (d) is the digital modulation signal after scrambling. For analog TV, it is a scrambling method for synchronous compression, such as Figure 5 As shown, (b) is the sync header signal before scrambling, and (e) is the sync header signal after scrambling. Since the sync header scrambling is compressed, the TV cannot obtain the sync signal, and the image is severely distorted at this time , cannot view.

[0065] The scrambling process in the method of the present invention is sho...

Embodiment 2

[0068] like Image 6 The front-end scrambling part divides the cable TV signal composed of digital and analog radio frequency signals into two channels, see Fig. 8, 9, 10 and 11 again. One signal is sent to the scrambling circuit 104 through the capacitor C41 and the resistor R41 to enter the IC41 chip for scrambling, that is, the scrambling frequency is attenuated and compressed to become a scrambled cable TV signal, which is output to the mixer 107 by the 5 feet of the IC41. Another road is sent into demodulator 101, sees Fig. 8 and solves video signal through IC11, through synchronous separation circuit 102 (seeing Fig. 9), from video signal, separates out-of-field composite signal, generates two-way signal with this as a benchmark, one way is Scrambling control circuit 103 sends into scrambling circuit 104 (seeing Figure 10 ) to perform scrambling attenuation and compression to become a scrambled cable TV signal and enter the mixing circuit 107. One is to control the TV...

Embodiment 3

[0071] The composition of the cable TV scrambling front end is the same as that in Embodiment 1.

[0072] At the user end, the line descrambling controller is used, installed in the unit of the building, and controls 2-24 users. There is no analog set-top box in the user's home, only a standardized and open digital set-top box (if the digital set-top box is placed on the TV set) There is only an integrated digital TV set produced together in the house, and there is no digital set-top box), which turns all set-top boxes (household appliances) in the descrambling part into outdoor "network equipment". see Figure 10 , 12 , 13, 14, 15, 16, 17, 18, 19. The line descrambling controller receives the front-end addressing signal and status, and the control signal is an unauthorized user. At this time, IC5-1 sends an instruction to close 206-2 without output, and the descrambling control circuit IC41 has no descrambling control signal. At the same time, the frequency conversion circ...

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PUM

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Abstract

The invention consists of: TV station signal output device; HFC transmission network; hub and descramble controller; user terminal device. The remote control for single channel output at the mode of signal processing combining channel processing can make scramble/descramble of digital cable TV more efficiency, safety.

Description

Technical field: [0001] The invention relates to a CA conditional reception control technology compatible with digital cable TV (DVB-C) and analog cable TV, in particular to a method for remote control of a single channel output by a digital analog TV hub controller. [0002] The present invention relates to a new TV standard, commonly referred to as DVB digital video and audio broadcasting technology, digital TV transmission technology, digital signal processing technology, computer software technology, DSP microprocessor technology, CA conditional access technology, modern data transmission technology , high-frequency microelectronics technology, network technology, interactive multimedia technology and other high-tech comprehensive applications. Background technique: [0003] Existing broadcast TV signals include digital TV and analog TV signals. Digital TV has become the development direction of today's broadcast TV technology because of its good signal image performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/10H04N7/167
Inventor 梁光海
Owner 梁光海
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