CN2543306Y - Safety defence management system for cable TV network - Google Patents
Safety defence management system for cable TV network Download PDFInfo
- Publication number
- CN2543306Y CN2543306Y CN 02233159 CN02233159U CN2543306Y CN 2543306 Y CN2543306 Y CN 2543306Y CN 02233159 CN02233159 CN 02233159 CN 02233159 U CN02233159 U CN 02233159U CN 2543306 Y CN2543306 Y CN 2543306Y
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- China
- Prior art keywords
- amplifier
- intelligent
- network
- subscriber
- cable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a safety prevention management device for a cable TV network, which has a computer connected with a FSK modulator demodulator. An output port of the modulator demodulator is connected with an input port of a mixer. Another input port of the mixer is connected with a CATV signal. An output port of the mixer is connected with an input port of an intelligent upward amplifier. An A port of the intelligent upward amplifier is connected with an input port of an original trunk line or branch amplifier. An output port of the original trunk line or branch amplifier is connected with a B port of the intelligent upward amplifier. An output port of the intelligent upward amplifier is connected with an inlet of a branch distributor in an original network. At a network terminal house head, the output port of the intelligent upward amplifier is connected to an input port of an addressable hub through the branch distributor. Every outlet of the addressable hub is connected with every user box. The safety prevention management device of the utility model can ensure cable TV network users watching no any illegal entering TV signal, and ensure a security of a cable TV network operation at the same time.
Description
Technical field
The utility model relates to a kind of management devices of cable TV network, particularly a kind of cable TV network safety precaution management devices.
Background technology
Cable TV network is the important component part in the national information highway, and its fail safe is closely bound up with the safety of country, government, the government form.At present, domestic cable TV network exists huge potential safety hazard, how its management only rests on the level that TV signal is normally transferred out, safety management of network and maintenance are fully by manually carrying out, also do not have a whole set of advanced person, safety management mode, let alone specific embodiment efficiently.Existing cable TV network mainly exists following safety management problem:
1, can't prevent to carry out negative campaigning in the illegal cable TV signal Access Network.
2, can't prevent from illegally to usurp the TV signal of network backbone and Zhi Gan.
3, can't locate the fault point or the breakdown point of cable television network rapidly.
4, the direct working condition of each equipment from network front end or management station's monitoring network.
5, can't be from Long-distance Control and the adjustment of network front end or management station to equipment the network.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of existing network technology, and provide a kind of to cable TV signal weighting transmission, network equipment along the line monitor equipment self-locking behind weighted signal, the break signal in real time, front-end computer reports to the police, can stop illegal signals to insert the cable TV network safety precaution management devices of playing automatically.
The purpose of this utility model is achieved in that it comprises front-end computer, cable TV network safety precaution management software, FSK modulator-demodulator, blender, intelligent upstream amplifier, intelligent subscriber amplifier, addressable hub.Its structural feature is: computer is connected with the FSK modulator-demodulator, and an input port of blender is received in the output of modulator-demodulator, and another input port of blender connects the CATV signal source.The delivery outlet of blender connects the input port of intelligent upstream amplifier, the A mouth of intelligence upstream amplifier connects former main line or service main amplifier input terminal mouth, the output port of former main line or service main amplifier connects the B mouth of intelligent upstream amplifier, and the delivery outlet of intelligent upstream amplifier connects the branch distributor inlet in the former network.At network end-point building Tou Chu, replace subscriber's amplifier in the former network with the intelligent subscriber amplifier, the delivery outlet of intelligent subscriber amplifier is through the input port that branch distributor is received addressable hub, and each delivery outlet of addressable hub is connected with each subscriber box.
Described intelligent upstream amplifier can prolong amplifier with unidirectional service main and connect, and constitutes two-way intelligent amplifier.
At the place of head-oning of network, replace subscriber's amplifier in the former network with the intelligent subscriber amplifier, the intelligent subscriber amplifier is connected with addressable hub through branch distributor.
The utility model has the advantages that:
1, utilizes advanced computer technology and data communication technology that cable TV signal is weighted transmission, can stop illegal signals to be played to the user effectively by this device.
2, give the network configuration intelligent parts, make the operating state of the network equipment in time pass back in the network front end computer, the manager can or manage the operating state that substation carries out dynamic monitoring equipment from the signal front end.
3, in the capital equipment of network, the circuit of regulating level, control level is installed, realized that the network front end computer carries out the function of Long-distance Control, adjustment parameter.
4, increase intelligence passback parts for existing unilateral network equipment, make original one-way transmission network become the transmitted in both directions network, this is that unilateral network changes the comparatively economic best approach of bilateral network into.
5, this device is safe in utilization, effective, economical, reasonable.
The explanation of accompanying drawing drawing
Fig. 1 is a syndeton schematic diagram of the present utility model.
Fig. 2 is an intelligent amplifier syndeton block diagram.
Embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
The utility model is made up of front-end computer 4 and cable TV network safety precaution management software, FSK modulator-demodulator 3, blender 2, intelligent upstream amplifier 6, intelligent subscriber amplifier, addressable hub etc.Its design philosophy is: these equipment are inserted in the existing cable tv network system, constitute complete cable TV network management system of protection of security.Increase computer 4 and cable TV network safety management software, FSK modulator-demodulator 3, blender 2 at the cable TV signal front end; Prolong amplifier 5 attached intelligent upstream amplifiers 6 for former main line; Give former spur amplifier 8,32 attached successively intelligent upstream amplifiers 9,33.Replace original subscriber's amplifier with intelligent subscriber amplifier 11,30; Replace finger assignments device below original subscriber's amplifiers with addressable hub 13,16,19,20,21,22,23,26, and be connected with each subscriber box.
Concrete syndeton such as Fig. 1: 2 one input ports of CATV signal source 1 and blender are connected, and another input port of blender 2 is connected with FSK modulator-demodulator 3, and FSK modulator-demodulator 3 is connected with computer 4.The output port of blender 2 prolongs amplifier 5 with former main line and is connected, and the output that former main line prolongs amplifier 5 is connected with main line distributor 7, leads intelligent upstream amplifier 6 and is attached on the loop of former main line prolongation amplifier 5 and is connected with main line distributor 7.Main line distributor 7 prolongs amplifier 8,32 with former branch line and is connected, and intelligent upstream amplifier 9 is attached on the loop of former branch line prolongation amplifier 8 and is connected with branch line distributor 10; The output of branch line distributor 10 is connected with intelligent subscriber amplifier 11,17.Intelligent subscriber amplifier 11,17 is connected with user's distributor 12,18 successively, the output of user's distributor 12 is connected with addressable hub 13,16, the output of user's distributor 18 is connected with addressable hub 19,20, addressable hub 13 is connected with subscriber box 14,15, and addressable hub 16,19,20 also is connected with the terminal block box respectively.Intelligent subscriber amplifier 17 is connected with user's distributor 18, and user's distributor 18 is connected with addressable hub 19,20, and addressable hub 19,20 is connected with subscriber box successively.Intelligence upstream amplifier 33 is attached on the loop that former branch line prolongs amplifier 32 and is connected with branch line distributor 31; The output of branch line distributor 31 is connected with intelligent subscriber amplifier 30,28, intelligent subscriber amplifier 30,28 is connected with user's distributor 29,27 successively, the output of user's distributor 29 is connected with addressable hub 21,22, the output of user's distributor 27 is connected with addressable hub 23,26, addressable hub 13,16,19,20,21,22,23,26 is connected with each terminal block box successively, and wherein addressable hub 26 is connected with subscriber box 24,25.
Syndeton such as Fig. 2 of intelligence upstream amplifier and former unidirectional amplifier, its input is connected with input signal, output terminals A is connected with former unidirectional (prolongation) amplifier input terminal, the output port of former unidirectional (prolongation) amplifier is connected with the input port B of intelligent upstream amplifier, and amplifying signal is exported by output port.This connected mode makes amplifier have two-way function to constitute two-way intelligent amplifier.
Intelligent upstream amplifier of the present utility model adopts FHF75AFZ type amplifier; , the main line distributor adopts general-purpose device, the intelligent subscriber amplifier adopts FHF75ASZ type amplifier, addressable hub adopts FHKXZ-XXS type hub.
Operation principle of the present utility model is: the digital code information in the front-end computer 4, modulate through FSK modulator-demodulator 3, and be modulated into the analog signal of 110MHZ, be mixed into limited TV weighted signal by blender 2 and cable TV signal again.Weighted signal prolongs amplifier 5, former spur amplifier 8,32, distributor 10,31, intelligent subscriber amplifier 11,30, addressable hub or branch distributor through former main line again and arrives user side through the transmission of trunk light net.Limited TV weighted signal the capital equipment of process, the information that main line or branch line can both receive with intelligent upstream amplifier, intelligent subscriber amplifier, addressable hub (abbreviating them as smart machine) and the demodulation front-end computer is sent is discerned then.When the intelligent upstream amplifier 6 among a certain smart machine such as Fig. 1 can not receive the coded message of agreement or is not inconsistent with agreement in the regular hour (1-10 second), then main line intelligence upstream amplifier can be closed by the control circuit of self high frequency electronic switch that it is inner immediately, or the amplifier power supply of its control cut off, stop limited TV signal by with it and the trunk amplifier that connects, also make the branch line upstream amplifier 9 of the subordinate's smart machine that is attached thereto in the time of 6 self-lockings of main line intelligence upstream amplifier, 33 self-lockings, the complete like this illegal signals that can stop is played to the user by this device.
In addition, main line or branch line user's intelligent upstream amplifier, intelligent subscriber amplifier, addressable hub all have passback self parameter (level, state of a control etc.) function.Because the smart machine after the signal cut, breakpoint can not return state information.Therefore, the front-end computer geographical position of reporting to the police according to back information immediately and pointing out out breakpoint to take place.The maintenance personal can arrive the fault point rapidly, reinforms front end after ascertaining the reason, fixing a breakdown the smart machine of self-locking is implemented to open operation.
Claims (3)
1, a kind of cable TV safely protection management device, it comprises front-end computer, cable TV network safety management software, FSK modulator-demodulator, blender, intelligent upstream amplifier, intelligent subscriber amplifier, addressable hub, it is characterized in that computer is connected with the FSK modulator-demodulator, an input port of blender is received in the output of modulator-demodulator, and another input port of blender connects the CATV signal source; The delivery outlet of blender is connected with the input port of intelligent upstream amplifier, the A mouth of intelligence upstream amplifier is connected with the input port of former main line, spur amplifier, the output port of former main line, spur amplifier is connected with the B mouth of intelligent upstream amplifier, and the branch distributor inlet in the delivery outlet of intelligent upstream amplifier and the former network is connected; At network end-point building Tou Chu, replace subscriber's amplifier in the former network with the intelligent subscriber amplifier, the delivery outlet of intelligent subscriber amplifier is connected with the input port of addressable hub through branch distributor, and each delivery outlet of addressable hub is connected with each subscriber box.
According to right 1 described cable TV safely protection management device, it is characterized in that 2, intelligent upstream amplifier can prolong amplifier with unidirectional service main and connect, and constitutes two-way intelligent amplifier.
According to right 1 described cable TV safely protection management device, it is characterized in that 3, at network end-point building Tou Chu, replace subscriber's amplifier in the former network with the intelligent subscriber amplifier, the intelligent subscriber amplifier is connected with addressable hub through branch distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233159 CN2543306Y (en) | 2002-04-26 | 2002-04-26 | Safety defence management system for cable TV network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233159 CN2543306Y (en) | 2002-04-26 | 2002-04-26 | Safety defence management system for cable TV network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2543306Y true CN2543306Y (en) | 2003-04-02 |
Family
ID=33708367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02233159 Expired - Fee Related CN2543306Y (en) | 2002-04-26 | 2002-04-26 | Safety defence management system for cable TV network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2543306Y (en) |
-
2002
- 2002-04-26 CN CN 02233159 patent/CN2543306Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |