CN204190886U - For the device that the uncovering power-off of Set Top Box is protected - Google Patents
For the device that the uncovering power-off of Set Top Box is protected Download PDFInfo
- Publication number
- CN204190886U CN204190886U CN201420659231.9U CN201420659231U CN204190886U CN 204190886 U CN204190886 U CN 204190886U CN 201420659231 U CN201420659231 U CN 201420659231U CN 204190886 U CN204190886 U CN 204190886U
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- elliptic arc
- closed enclosure
- cam
- electrode
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- 230000007704 transition Effects 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The device that the utility model provides a kind of uncovering power-off for Set Top Box to protect, comprises cam, spring, overhead gage, lower baffle plate, top electrode, bottom electrode and closed enclosure; Set Top Box is covered on the top of this closed enclosure, this cam is installed on rotating shaft, this rotating shaft is fixedly connected in this closed enclosure, one end of the major axis of this cam is contacted with this upper cover by the opening on closed enclosure top, spring, overhead gage, lower baffle plate, top electrode and bottom electrode are positioned at closed enclosure, this top electrode is fixed on the bottom of overhead gage, and this bottom electrode is fixed on the top of lower baffle plate, and this overhead gage is connected with lower baffle plate by spring; The other end of the major axis of this cam contacts with this overhead gage and compresses this spring, and this top electrode and this bottom electrode are equipped with power pins, and are connected in series by the main circuit of a Set Top Box and the power supply of this main circuit.The utility model disconnects the power supply of main box in the situation of uncapping, and effectively prevent hacker and to uncap eavesdropping data.
Description
Technical field
The utility model relates to field of set-top, particularly a kind of uncovering power-off protective device for Set Top Box.
Background technology
For the safe broadcast of Digital Television, Web TV and content protecting, the safety of TV set-top box is extremely important.The safety requirements of TV set-top box mainly prevents hack software, usurps, Copyrights content, propagates illegal contents.One of means of hack open Set Top Box cover, implant wiretap, carry out when Set Top Box is run signal eavesdropping and software crack, or destruction memory after implant illegal contents.
The security precautions technology in TV set-top box field mainly lays particular emphasis on the software and hardware circuit design of Set Top Box.Such as, in Software for Design, requirement closes software debugging interface before dispatching from the factory, and prevents hacker from obtaining sensitive information by debugging interface; Require in hardware designs that the pin of the Primary Components such as host CPU (central processing unit), internal memory, memory is forbidden exposing, after preventing hacker from uncapping, eavesdrop the service data of Set Top Box.But these designs all can be opened cover by hacker and power on and be run premised on Set Top Box.In order to prevent hacker from opening cover, need carry out uncaps detects and takes corresponding safeguard measure.
For detection technique of uncapping, related art is all there is at product scopes such as electric energy meter, vehicle GPS (global positioning system), tax control machines, if application number is the Chinese patent of 200510022487.4, for tax control machine, battery need be equipped with so that whether electric circuit inspection storage cover closes; Application number is the Chinese patent of 200620013267.5, utilizes trigger switch open in usual to detect the signal that also logging machine cover is opened; Application number is the Chinese patent of 201120246993.2, utilizes Hall switch to detect the signal of uncapping of engineering vehicle vehicle GPS, and sends alarm signal; Application number is the Chinese patent of 201120448863.7, utilizes mechanical switch and testing circuit to uncap signal for Electrical Testing, and sends alarm signal in time; Application number is the Chinese patent of 201320610386.9, utilizes Photoelectric Detection to uncap signal etc.Above-mentioned detection technique of uncapping all needs for checkout gear is powered, to detect and record is uncapped signal, and checkout gear itself cannot carry out substantial protection to the system after uncapping.
Utility model content
The technical problems to be solved in the utility model be in order to overcome uncovering detection device in prior art need power supply so as to detect signal of uncapping, uncovering detection device itself cannot carry out substantive protection defect to the system after uncapping, the device that the uncovering power-off for Set Top Box providing a kind of hacker of preventing to eavesdrop Set Top Box service data is protected.
The utility model solves above-mentioned technical problem by following technical proposals:
For the device that the uncovering power-off of Set Top Box is protected, its feature is, this device comprises a cam, a spring, an overhead gage, a lower baffle plate, a top electrode, a bottom electrode and a closed enclosure;
This closed enclosure is positioned at the inside of this Set Top Box, the upper cover of this Set Top Box is arranged at the top of this closed enclosure, this cam is installed on a rotating shaft and also can rotates along this rotating shaft, this rotating shaft is fixedly connected in this closed enclosure, one end of the major axis of this cam is contacted with this upper cover by the opening on this closed enclosure top, this spring, this overhead gage, this lower baffle plate, this top electrode and this bottom electrode are all positioned at this closed enclosure, this top electrode is fixed on the bottom of this overhead gage, this bottom electrode is fixed on the top of this lower baffle plate, this overhead gage is connected with this lower baffle plate by this spring,
The other end of the major axis of this cam contacts with this overhead gage and compresses this spring, this top electrode is contacted with this bottom electrode, this top electrode and this bottom electrode are equipped with a power pins, those power pins are stretched out from the bottom of this closed enclosure and are connected in series by the main circuit of a Set Top Box and the power supply of this main circuit, when this top electrode contacts with this bottom electrode, this main circuit and this power supply are connected, when this top electrode does not contact with this bottom electrode, this main circuit and this power supply disconnect, and this closed enclosure is fixedly connected on the circuit board at this main circuit place.
In this programme, the main circuit of Set Top Box refers to other operating circuits except power supply circuits, comprises host CPU, internal memory, memory, audio and video output interface, network interface, the humorous device interface of digital television signal, Conditional Access of Digital Television smart card circuitry, USB (USB) interface etc.The device of uncovering power-off protection is installed in a Set Top Box, and this overhead gage is connected by spring with lower baffle plate, installs rear spring and is in confined state, upwards ejection overhead gage always, overhead gage and cam are kept in touch.Overhead gage and the lower baffle plate of this device are insulator.Before installing this device, utilize a locking plate to push down this cam, this cam pushes down this overhead gage, and this top electrode is contacted with this bottom electrode, and the main circuit of Set Top Box and power supply are connected.After this upper cover is installed, this locking plate is extracted out, push down cam by this upper cover, keep the main circuit of Set Top Box and power supply to connect.After upper cover is opened, cam rotates under spring promotes the effect of overhead gage, and top electrode and bottom electrode are disconnected, until cam is lockable and can not continues to rotate.Because this device is in closed enclosure, hacker cannot rotating cam or promotion overhead gage make top electrode contact with bottom electrode by force.Therefore, this device can disconnect the power supply of main box in the situation of uncapping, and causes main circuit to work, and prevents hacker from uncapping and eavesdrops the service data of Set Top Box.
Preferably, the profile of this cam comprises one first elliptic arc and one second elliptic arc, and this first elliptic arc is connected with this second elliptic arc by a First Transition arc, and this long axis normal corresponding to the second elliptic arc is in the major axis corresponding to this first elliptic arc.
Preferably, this cam is made up of the orthogonal oval plate of two panels, and each oval plate is all installed on this rotating shaft and also can rotates along this rotating shaft.
Preferably, the profile of this cam comprises one the 3rd elliptic arc, one the 4th elliptic arc, a straight line be connected with the 4th elliptic arc, one second transition arcs and one the 3rd transition arcs, 3rd elliptic arc is connected with this straight line by this second transition arcs, 4th elliptic arc is connected with the 3rd elliptic arc by the 3rd transition arcs, and the long axis normal corresponding to the 3rd elliptic arc is in the major axis corresponding to the 4th elliptic arc.
In this programme, after the upper cover of Set Top Box is opened, this cam rotates under spring promotes the effect of overhead gage, top electrode and bottom electrode is disconnected, until the straight line portion of this cam contour contacts with overhead gage and can not continue to rotate.
Preferably, the below of this closed enclosure is provided with the photoelectric sensor in a photoelectric sensor circuit, this photoelectric sensor circuit is positioned on the circuit board at this main circuit place, and this photoelectric sensor circuit is used for being disconnected by the power supply of this main circuit and this main circuit when this photoelectric sensor detects that light intensity changes.
In this programme; photoelectric sensor in photoelectric sensor circuit is positioned at the below of closed enclosure, and after the device of uncovering power-off protection is removed by force by hacker, this photoelectric sensor circuit has detected that light is injected; export a switch controlling signal, the power supply of this main circuit and this main circuit is disconnected.Therefore, even if the power pins of hacker's short circuit top electrode and bottom electrode also cannot recover the power supply of main circuit.
Preferably, this closed enclosure is connected by screw on the circuit board at this main circuit place.
Positive progressive effect of the present utility model is: need to power with uncovering detection device in prior art and only detect the signal and cannot carry out the system after uncapping compared with substance protects of uncapping; uncovering power-off protective device of the present utility model is pure mechanical device; do not need independent power supply; and the power supply of main box can be disconnected after Set Top Box is uncapped; cause main circuit to work, effectively prevent hacker uncap eavesdropping Set Top Box service data.
Accompanying drawing explanation
Fig. 1 is the structure chart that the uncovering power-off protective device of the utility model embodiment 1 closes when upper cover.
Fig. 2 is the structural design drawing of the cam of the uncovering power-off protective device of the utility model embodiment 1.
Fig. 3 is the structure chart that the uncovering power-off protective device of the utility model embodiment 1 is opened when upper cover.
Fig. 4 is the device of the utility model embodiment 1 and the annexation schematic diagram of main box.
Embodiment
Below by the mode of embodiment, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
Embodiment 1
The device that the uncovering power-off for Set Top Box of the present embodiment is protected as shown in Figure 1, comprises cam 1, spring 2, overhead gage 3, lower baffle plate 4, top electrode 5, bottom electrode 6 and closed enclosure 7.Wherein, closed enclosure 7 is positioned at the inside of this Set Top Box, closed enclosure 7 is connected by screw on the circuit board at this main box place, cam 1 is installed on rotating shaft 8 and also can rotates along rotating shaft 8, rotating shaft 8 is fixedly connected in closed enclosure 7, and spring 2, overhead gage 3, lower baffle plate 4, top electrode 5 and bottom electrode 6 are all positioned at closed enclosure 7, and top electrode 5 is fixed on the bottom of overhead gage 3, bottom electrode 6 is fixed on the top of lower baffle plate 4, and overhead gage 3 is connected with lower baffle plate 4 by spring 2.When upper cover 9 closes, one end of the major axis of cam 1 is contacted with upper cover 9 by the opening on closed enclosure 7 top, and the other end contacts with overhead gage 3 and Compress Spring 2, and top electrode 5 is contacted with bottom electrode 6.Top electrode 5 is provided with a power pins V, and bottom electrode 6 is provided with a power pins U, and power pins U and V stretches out from the bottom of closed enclosure 7.
Before installing the device of the present embodiment, first utilize the position of a locking plate stationary cam 1, locking plate pushes down one end of cam 1 major axis, and the other end of cam 1 major axis pushes down overhead gage 3, and top electrode 5 is contacted with bottom electrode 6.After the upper cover of fitting machine top box, locking plate is extracted out, push down cam by upper cover.
The structure of cam and shape can have multiple.The profile of such as cam comprises the first elliptic arc and the second elliptic arc, and this first elliptic arc is connected with this second elliptic arc by First Transition arc, and this long axis normal corresponding to the second elliptic arc is in the major axis corresponding to this first elliptic arc.Such as cam can also be made up of the orthogonal oval plate of two panels again, and each oval plate is all installed on this rotating shaft and also can rotates along this rotating shaft.The profile of the present embodiment uncovering power-off protective device cam 1 as shown in Figure 2; cam 1 is provided with a hole 10 corresponding with rotating shaft; the profile of cam 1 comprises the 3rd elliptic arc AB, the 4th elliptic arc DE, straight line CD, the second transition arcs BC and the 3rd transition arcs EA, the major axis corresponding to elliptic arc AB and the long axis normal corresponding to elliptic arc DE.
After the upper cover of Set Top Box is opened, as shown in Figure 3, cam 1 is rotated counterclockwise under spring 2 promotes the effect of overhead gage 3, top electrode 5 and bottom electrode 6 is disconnected, is lockable until block and can not continues to rotate at the planar section of cam 1.
As shown in Figure 4, the power pins U of the present embodiment uncovering power-off protective device 11 is connected with power supply Vcc by main box 12 with V.When top electrode 5 contacts with bottom electrode 6, power pins U is connected with V, and main box 12 and power supply Vcc connect; When top electrode 5 does not contact with bottom electrode 6, power pins U is not connected with V, and main box 12 and power supply Vcc disconnect.Therefore, the device of the present embodiment can disconnect the power supply of main box when Set Top Box is uncapped, and causes main circuit to work, and effectively prevents hacker from uncapping and eavesdrops the service data of Set Top Box.
Embodiment 2
The uncovering power-off protective device of the present embodiment is identical with embodiment 1, improvement be main box place circuit board on be also provided with a photoelectric sensor circuit, whether be removed for detecting uncovering power-off protective device.Photoelectric sensor circuit comprises a photoelectric sensor, and this photoelectric sensor is positioned at the below of closed enclosure.When uncovering power-off protective device is removed, photoelectric sensor detects that light intensity changes, and photoelectric sensor circuit can export a switch controlling signal and main box and power supply be disconnected.
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection range of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection range of the present utility model.
Claims (6)
1. for the device that the uncovering power-off of Set Top Box is protected, it is characterized in that, this device comprises a cam, a spring, an overhead gage, a lower baffle plate, a top electrode, a bottom electrode and a closed enclosure;
This closed enclosure is positioned at the inside of this Set Top Box, the upper cover of this Set Top Box is arranged at the top of this closed enclosure, this cam is installed on a rotating shaft and also can rotates along this rotating shaft, this rotating shaft is fixedly connected in this closed enclosure, one end of the major axis of this cam is contacted with this upper cover by the opening on this closed enclosure top, this spring, this overhead gage, this lower baffle plate, this top electrode and this bottom electrode are all positioned at this closed enclosure, this top electrode is fixed on the bottom of this overhead gage, this bottom electrode is fixed on the top of this lower baffle plate, this overhead gage is connected with this lower baffle plate by this spring,
The other end of the major axis of this cam contacts with this overhead gage and compresses this spring, this top electrode is contacted with this bottom electrode, this top electrode and this bottom electrode are equipped with a power pins, those power pins are stretched out from the bottom of this closed enclosure and are connected in series by the main circuit of a Set Top Box and the power supply of this main circuit, when this top electrode contacts with this bottom electrode, this main circuit and this power supply are connected, when this top electrode does not contact with this bottom electrode, this main circuit and this power supply disconnect, and this closed enclosure is fixedly connected on the circuit board at this main circuit place.
2. device as claimed in claim 1, it is characterized in that, the profile of this cam comprises one first elliptic arc and one second elliptic arc, this first elliptic arc is connected with this second elliptic arc by a First Transition arc, and this long axis normal corresponding to the second elliptic arc is in the major axis corresponding to this first elliptic arc.
3. device as claimed in claim 1, it is characterized in that, this cam is made up of the orthogonal oval plate of two panels, and each oval plate is all installed on this rotating shaft and also can rotates along this rotating shaft.
4. device as claimed in claim 1, it is characterized in that, the profile of this cam comprises one the 3rd elliptic arc, one the 4th elliptic arc, a straight line be connected with the 4th elliptic arc, one second transition arcs and one the 3rd transition arcs, 3rd elliptic arc is connected with this straight line by this second transition arcs, 4th elliptic arc is connected with the 3rd elliptic arc by the 3rd transition arcs, and the long axis normal corresponding to the 3rd elliptic arc is in the major axis corresponding to the 4th elliptic arc.
5. device as claimed in claim 1, it is characterized in that, the below of this closed enclosure is provided with the photoelectric sensor in a photoelectric sensor circuit, this photoelectric sensor circuit is positioned on the circuit board at this main circuit place, and this photoelectric sensor circuit is used for being disconnected by the power supply of this main circuit and this main circuit when this photoelectric sensor detects that light intensity changes.
6. device as claimed in claim 1, it is characterized in that, this closed enclosure is connected by screw on the circuit board at this main circuit place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659231.9U CN204190886U (en) | 2014-11-05 | 2014-11-05 | For the device that the uncovering power-off of Set Top Box is protected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659231.9U CN204190886U (en) | 2014-11-05 | 2014-11-05 | For the device that the uncovering power-off of Set Top Box is protected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190886U true CN204190886U (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420659231.9U Expired - Fee Related CN204190886U (en) | 2014-11-05 | 2014-11-05 | For the device that the uncovering power-off of Set Top Box is protected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204190886U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354750A (en) * | 2018-03-23 | 2018-08-03 | 谢文 | A kind of paediatrics head fixed equipment |
| WO2019056196A1 (en) * | 2017-09-20 | 2019-03-28 | 深圳市隐秀科技有限公司 | Detection device and portable electronic device having same |
| CN110858713A (en) * | 2018-08-24 | 2020-03-03 | 深圳光峰科技股份有限公司 | Electric shock prevention protection system, projection equipment and electric shock prevention protection method |
-
2014
- 2014-11-05 CN CN201420659231.9U patent/CN204190886U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056196A1 (en) * | 2017-09-20 | 2019-03-28 | 深圳市隐秀科技有限公司 | Detection device and portable electronic device having same |
| CN108354750A (en) * | 2018-03-23 | 2018-08-03 | 谢文 | A kind of paediatrics head fixed equipment |
| CN108354750B (en) * | 2018-03-23 | 2019-11-01 | 青岛市妇女儿童医院 | A kind of paediatrics head fixed equipment |
| CN110858713A (en) * | 2018-08-24 | 2020-03-03 | 深圳光峰科技股份有限公司 | Electric shock prevention protection system, projection equipment and electric shock prevention protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200001 room H, No. 666, Fuzhou Road, Huangpu District, Shanghai, room H Patentee after: SHANGHAI INESA DIGITAL TECHNOLOGY Co.,Ltd. Address before: 200001 room H, No. 666, Fuzhou Road, Huangpu District, Shanghai, room H Patentee before: SHANGHAI YIDIAN DIGITAL TECHNOLOGY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |