CN2307413Y - Gain controller for wired TV subscription management system - Google Patents
Gain controller for wired TV subscription management system Download PDFInfo
- Publication number
- CN2307413Y CN2307413Y CN97208365U CN97208365U CN2307413Y CN 2307413 Y CN2307413 Y CN 2307413Y CN 97208365 U CN97208365 U CN 97208365U CN 97208365 U CN97208365 U CN 97208365U CN 2307413 Y CN2307413 Y CN 2307413Y
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- CN
- China
- Prior art keywords
- termination
- electromagnetic relay
- output
- gain controller
- tongue tube
- Prior art date
- 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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- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 235000014676 Phragmites communis Nutrition 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a gain controller for the fee charging management of wired TV sets. Under the control of a management system, the gain effect of the gain controller changes greatly. The TV sets that are connected with the gain controller receive signals normally when the gain is high, and users' TV signals can not reach the lowest signal receiving condition when the gain is low, so that defaulting users can not receiving TV signals normally, which achieves the purpose of fee charging management. The gain controller comprises an electromagnetic relay 3, an RF amplifier 1, and a distributor 2.
Description
The utility model belongs to the catv charge-management technical field.
Method commonly used in the present cable television charging system is that TV signal is carried out scrambling and descrambling, televiews to prevent the disabled user.But its cost of which kind of scrambling-descrambling technology is all higher, and the economic capability of local cable TV station is difficult to bear.The difficulty of charge makes cable TV station suffer very big economic loss, presses for a kind of inexpensive charge management method.
The purpose of this utility model is to be gain controller for charging administration system provides the parts of a key.Because its with low cost and all-channel control, thereby the ability to bear of suitable local cable TV station and reality needs.
The purpose of this utility model is given a plurality of user's television sets after being achieved in that the all-channel program in the CATV cable TV network distribution system is gain controller through the utility model again.In gain controller, be provided with radio frequency amplifier, distributor and electromagnetic relay.Also have accessory circuits such as control signal generator in addition.Under the situation that the user has paid dues, the master-control room computer of wired TV station does not send this user's code, so the control signal generator can not produce control signal, electromagnetic relay keeps attracting state, and the full frequency channel TV program signal just can be delivered to the normal rating of user's television set through radio frequency amplifier, distributor and electromagnetic relay adhesive contact.When subscriber arrearage, the master-control room computer can generate defaulting subscriber's code automatically, through network distribution system, this defaulting subscriber's code is delivered in each control signal generator in the system, the code that relates to this user is identical with the code that master-control room is sent, the control signal generator is just exported a control voltage discharges electromagnetic relay, and full channel tv signal will be blocked, and make user's television set can not receive the radio television signal that any CATV cable TV network distribution system is sent here.Only after the defaulting subscriber initiatively paid dues, the master-control room computer no longer sent this user's code, and the automatic adhesive of the electromagnetic relay of this gain controller recovers this user's rating right.Thereby reached the purpose of control CATV cable TV defaulting subscriber rating.
In Fig. 1: radio frequency amplifier (1), distributor (2), electromagnetic relay (3).
In the embodiment shown in Figure 2, its circuit connecting relation is as follows: imported by IN by the all-channel programme signal that the CATV main line is sent here, amplify through radio frequency amplifier (1), to compensate the distribution loss that distributor causes.Signal after the amplification is delivered to distributor (2) through coupling capacitance (18), distributes to each road output.One tunnel output to corresponding electromagnetic relay (3), is fed to user's television set through OUT1 through coupling capacitance (19) again.When the CTRL1 control signal was low level, driver (11) made electromagnetic relay (3) adhesive, and the all-channel programme signal is delivered to OUT1 through input termination (7) and output termination (8), and signal output is arranged this moment.Otherwise, when the CTRL1 control signal is high level, driver (11) disconnects electromagnetic relay (3), importing termination (7) simultaneously joins through contact and ground connection termination (9), and, export termination (8) and join, OUT1 short circuit ground connection through contact and ground connection termination (10) with the signal shorts ground connection that distributor (2) comes, user's television set can not receive radio television signal, reaches to forbid defaulting subscriber's rating purpose.
(4) and (5) are respectively two tongue tubes in electromagnetic relay structure cutaway view shown in Figure 3, and they are connected mutually, and (7), (8) are respectively input, the output termination of electromagnetic relay, and (9), (10) are respectively the ground connection termination of two tongue tubes.(20), (21) are respectively two tongue tube glass bulbs.(22), (23) are respectively its armature contact.During no current, the armature contact in two tongue tubes only contacts with lower contact, and input termination (7) and ground connection termination (9) are joined in the relay coil (6), and output termination (8) joins with ground connection termination (10).When enough big attract current is arranged in the relay coil, armature contact in two tongue tubes will be distinguished adhesive to upper contacts, continue out with ground connection termination (9) in input termination (7), output termination (8) disconnects with ground connection termination (10), imports termination (7) and output termination (8) simultaneously and contacts and connect by tongue tube (4), (5) interior upper contact.Tongue tube (4) and (5) can merge in the glass bulb, and the correlation of each contact and function are constant.
The critical component of gain controlling is the electromagnetic relay with excellent high frequency characteristics in the utility model, and whether the adhesive of electromagnetic relay contact has directly controlled the rating right of user's television set.The utility model decoding circuit in its accessory circuit and control signal generator under the control of the addressable of CATV catv charge-management computer coding will exports one and control voltage, amplify through driver (11), make the electromagnetic relay action, cut off the path of all-channel radiofrequency signal, defaulting subscriber's television set is because of can not get normally rating of due signal level.Radio frequency amplifier among Fig. 1 (1) is to establish for the distribution loss of compensation distributor (2), can obtain meeting the signal level of GB when the normal rating to guarantee user's television set.Distributor among Fig. 1 (2) is provided with considering to controlling a plurality of user's television sets, and the OUT2 among Fig. 2, OUT3, OUT4 represent the analogous circuit of other three tunnel users television sets.When only controlling a TV user, can be without distributor.
Owing to adopt such scheme and use a plurality of gain controllers, this utility model can realize the rating power achieve effective control to the whole users of cable TV of this system under the control of charging administration system computer, reaching pays dues authorizes the purpose of rating, makes toll administration work more easy.This utility model technology is simple, with low cost, is fit to national conditions, and favorable economic benefit and social benefit will be arranged.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the technical solution of the utility model block diagram
Fig. 2 is the utility model embodiment electrical schematic diagram
Fig. 3 is an electromagnetic relay structure cutaway view among the utility model embodiment
Fig. 4 realizes best application mode block diagram of the present utility model
In electromagnetic relay structure cutaway view shown in Figure 3, tongue tube (4) and tongue tube (5) be series connection mutually, and input termination (7) and output termination (8) are stretched out relay1 case 5mm length.Ground connection termination (9) and (10) of two tongue tubes are stretched out relay1 case 5mm length too.During no current, input termination (7) contacts by the lower contact in the tongue tube (4) with ground connection termination (9), exports termination (8) and contacts by the interior lower contact of tongue tube (5) with ground connection termination (10) in the relay coil (6).When in the relay coil (6) enough big attract current being arranged, tongue tube (4) moves upward with armature contact in the tongue tube (5) and contacts upper contact, input termination (7) and ground connection termination (9) are disconnected, output termination (8) disconnects with ground connection termination (10), imports termination (7) simultaneously and connects because of the interior upper contact of tongue tube (4) and tongue tube (5) links to each other with output termination (8).
Best application mode block diagram of the present utility model is Fig. 4.Wherein 12 is computer and encoder, and it delivers to cable TV network distribution system (13) with the code signal of defaulting subscriber in the database.The subscriber-coded of addressing control signal generator (14) acts on gain controller (15) if will produce high-level control signal (as CTRL1) when consistent with defaulting subscriber's sign indicating number, makes user's television set (16) can not receive TV signal.If non-defaulting subscriber is normal rating then.
Claims (2)
1. gain controller that is used for catv charge-management, it is linked in sequence radio frequency amplifier, distributor, electromagnetic relay, it is characterized in that: the input IN of radio frequency amplifier (1) is connected to TV signal, its output is received distributor (2) through electric capacity (18), the electromagnetic relay on each road is received in each road output of distributor respectively, and the output of electromagnetic relay connects user's television set.
2. electromagnetic relay according to claim 1, it is characterized in that: the control structure that used reed switch contact constitutes in the electromagnetic relay, during the electromagnetic relay adhesive, input termination (7) links together by the armature contact in tongue tube (4) and the tongue tube (5) with output termination (8), TV signal is passed through smoothly, and when electromagnetic relay discharges, input termination (7) joins with ground connection termination (9), output termination (8) joins with ground connection termination (10), simultaneously, corresponding contacts in tongue tube (4) and the tongue tube (5) disconnects, and input termination (7) is in off-state with output termination (8), makes output termination (8) not have TV signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97208365U CN2307413Y (en) | 1997-03-24 | 1997-03-24 | Gain controller for wired TV subscription management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97208365U CN2307413Y (en) | 1997-03-24 | 1997-03-24 | Gain controller for wired TV subscription management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2307413Y true CN2307413Y (en) | 1999-02-10 |
Family
ID=33927821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97208365U Expired - Fee Related CN2307413Y (en) | 1997-03-24 | 1997-03-24 | Gain controller for wired TV subscription management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2307413Y (en) |
-
1997
- 1997-03-24 CN CN97208365U patent/CN2307413Y/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 |