CN107645641B - Tuner protection device and protection method for set top box - Google Patents
Tuner protection device and protection method for set top box Download PDFInfo
- Publication number
- CN107645641B CN107645641B CN201710858545.XA CN201710858545A CN107645641B CN 107645641 B CN107645641 B CN 107645641B CN 201710858545 A CN201710858545 A CN 201710858545A CN 107645641 B CN107645641 B CN 107645641B
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- Prior art keywords
- protection
- tuner
- inductor
- control switch
- coil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Software Systems (AREA)
- Protection Of Static Devices (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a protection device and a protection method for a set top box Tuner, wherein the protection device comprises: the device comprises a normal protection inductor, a standby protection inductor, a control switch and a voltage detection unit. According to the invention, the normally-arranged protection inductor and the standby protection inductor are arranged at the Tuner interface for double protection, the normally-arranged protection inductor is used for normally-arranged protection, and secondary protection is carried out by the standby protection inductor when abnormal conditions occur, so that the set top box Tuner is comprehensively and effectively protected when the Tuner is subjected to high energy of lightning stroke, damage or destructive damage to the Tuner is avoided, safety accidents are avoided, and risks cannot be brought to the set top box and users.
Description
Technical Field
The invention relates to digital television equipment, in particular to a protective device and a protective method for a set top box Tuner.
Background
As a product for receiving television signals, a set-top box has a wide user population, and in areas with less developed cable networks, the necessity of a set-top box with Tuner (Tuner) is more prominent. Tuner is a channel for connecting external signals and a main chip of a set-top box as a receiver of television signals, and is one of indispensable interfaces of a cable set-top box.
When the set top box with the Tuner is used, the Tuner transmits a television signal to the set top box through a signal line, and the signal line exposed outdoors needs to be connected, so that the possibility that the Tuner is struck by lightning is increased, if the energy of the lightning strike on the Tuner is higher than the self-sustainable energy, the Tuner is damaged to a certain extent, the signal is interrupted for transmission, and if the energy of the lightning strike on the Tuner is higher than the self-sustainable energy, parts and components of the Tuner are burnt to cause destructive damage of the Tuner, even the fire is possibly caused, so that safety accidents are caused, and great risks are brought to the set top box and users.
Disclosure of Invention
In view of the above, there is a need to provide a protection device and a protection method for a set top box Tuner, which are used to solve the above problem that the set top box Tuner may be struck by lightning and pose a risk.
The invention provides a set-top box Tuner protection device, which comprises: the device comprises a permanent protective inductor, a standby protective inductor, a control switch and a voltage detection unit; the general equipment protection inductance one end is connected the Tuner interface, and other end ground connection, reserve protection inductance one end is connected control switch one end, other end ground connection, control switch's the other end is connected with Tuner, and the junction is in the rear of general equipment protection inductance and Tuner interface connection department, voltage detection unit and Tuner be connected and set up in between general equipment protection inductance and the control switch, the voltage of real-time detection junction, if the junction voltage is greater than when the default, will control switch is closed, switches on reserve protection inductance, otherwise will control switch disconnection.
In one embodiment, the permanent protection inductor and the standby protection inductor both use air-core coil inductors.
In one embodiment, one end of the permanent protection inductor is connected with an RF signal pin of the Tuner interface.
In one embodiment, the permanent protection inductor and the standby protection inductor are plug-in inductors.
In one embodiment, the diameter of a coil wire of the permanent protective inductor is 0.4mm, the inner diameter of the coil is 2.2mm, and the number of coil turns is 17; the diameter of the standby protective inductance coil wire is 0.3mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 9.
The invention provides a set top box Tuner protection method, which comprises the following steps:
s10: setting a normally-arranged protection inductor, wherein one end of the normally-arranged protection inductor is connected with a Tuner interface, and the other end of the normally-arranged protection inductor is grounded;
s20: setting a standby protection inductor and a control switch, wherein one end of the standby protection inductor is connected with one end of the control switch, the other end of the standby protection inductor is grounded, and the other end of the control switch is connected with a Tuner and is connected behind the joint of the normally-arranged protection inductor and the Tuner interface;
s30: and a voltage detection unit is arranged, is connected with the Tuner and is arranged between the normally-arranged protection inductor and the control switch, detects the voltage of the joint in real time, closes the control switch if the voltage of the joint is greater than a preset value, switches on the standby protection inductor, and otherwise switches off the control switch.
In one embodiment, the permanent protection inductor and the standby protection inductor both use air-core coil inductors.
In one embodiment, one end of the permanent protection inductor is connected with an RF signal pin of the Tuner interface.
In one embodiment, the permanent protection inductor and the standby protection inductor are plug-in inductors.
In one embodiment, the diameter of a coil wire of the permanent protective inductor is 0.4mm, the inner diameter of the coil is 2.2mm, and the number of coil turns is 17; the diameter of the standby protective inductance coil wire is 0.3mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 9.
According to the set top box Tuner protection device and the protection method, the normally-arranged protection inductor and the standby protection inductor are arranged at the Tuner interface for double protection, the normally-arranged protection inductor is used for normally protecting, and secondary protection is carried out by the standby protection inductor when abnormal conditions occur, so that the set top box Tuner is comprehensively and effectively protected when the Tuner is subjected to high energy of lightning stroke, damage or destructive damage to the Tuner is avoided, safety accidents are avoided, and risks cannot be brought to the set top box and users.
Drawings
FIG. 1 is a block diagram of a set top box Tuner protection device in one embodiment;
FIG. 2 is a flow diagram of a set top box Tuner protection method in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
FIG. 1 is a block diagram of a set top box Tuner protection device in one embodiment, as shown in FIG. 1, the protection device comprising: a permanent set protection inductor 100, a standby protection inductor 200, a control switch 300 and a voltage detection unit 400. One end of the normally installed protection inductor 100 is connected to the Tuner interface, and the other end is grounded. One end of the standby protection inductor 200 is connected to one end of the control switch 300, the other end is grounded, the other end of the control switch 300 is connected to Tuner, and the connection is located behind the connection position of the permanent protection inductor 100 and the Tuner interface. The voltage detection unit 400 is connected to the Tuner and disposed between the constant protection inductor 100 and the control switch 300, and detects the voltage at the connection in real time, if the voltage at the connection is greater than the preset value, the control switch 300 is turned on, and the standby protection inductor 200 is turned on, otherwise the control switch 300 is turned off (if the voltage at the connection between the voltage detection unit 400 and the Tuner is greater than the preset value, it indicates that the Tuner is subjected to a very large voltage, the constant protection inductor 100 cannot perform complete protection, the control switch 300 needs to be turned on to enable the standby protection inductor 200, so as to prevent the Tuner from being damaged by the large voltage, if the voltage at the connection between the voltage detection unit 400 and the Tuner is not greater than the preset value, the standby protection inductor 200 does not need to be enabled, and the control switch 300 is turned off.
In this embodiment, the permanent and standby protection inductors 100 and 200 are air-core coil inductors. One end of the protection inductor 100 is usually connected to an RF signal (video signal) pin of the Tuner interface. According to the requirement of Tuner (layout), the distance between the conventional protective inductor 100 and the RF signal pin of the Tuner interface needs to be very close, so that the conventional protective inductor 100 and the spare protective inductor 200 adopt plug-in inductors, thereby preventing the problems of short circuit and the like caused by the melting of tin by heat generated by strong lightning strike.
Because of the same inductance value, the larger the wire diameter, the more resistant to the stronger lightning stroke, the larger the wire diameter, the smaller the wire diameter, the standby protection inductor 200, and the normal protection inductor 100. Further, the diameter of a coil wire of the protective inductor 100 is usually set to be 0.4mm (millimeter), the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 17. The diameter of a wire of the standby protective inductor 200 coil is 0.3mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 9.
This STB Tuner protector, it often establishes protection inductance 100 and reserve protection inductance 200 and carries out dual protection to set up at Tuner kneck, it often establishes protection inductance 100 and carries out the serialization protection, carry out the secondary protection by reserve protection inductance 200 when the abnormal conditions appear, thereby it protects STB Tuner to be comprehensive effectual when the Tuner receives the thunderbolt high energy, avoid causing the damage or the destructive damage to Tuner, avoid causing the incident, can not bring the risk for STB and user.
In addition, the present invention further provides a protection method for a set top box Tuner, as shown in fig. 2, the protection method includes the following steps:
s10: the protection inductor is normally arranged, one end of the normally arranged protection inductor is connected with the Tuner interface, and the other end of the normally arranged protection inductor is grounded.
S20: set up reserve protection inductance and control switch, reserve protection inductance one end connection control switch one end, other end ground connection, control switch's the other end is connected with Tuner to the junction is in the rear of usual equipment protection inductance and Tuner interface connection department.
S30: and a voltage detection unit is arranged, is connected with the Tuner and is arranged between the normally-arranged protection inductor and the control switch, detects the voltage of the joint in real time, closes the control switch if the voltage of the joint is greater than a preset value, switches on the standby protection inductor, and otherwise switches off the control switch.
If the voltage at the joint of the voltage detection unit and the Tuner is greater than the preset value, it indicates that the Tuner is subjected to a very large voltage, the normally-installed protection inductor cannot perform complete protection, and the control switch needs to be closed to enable the standby protection inductor so as to prevent the Tuner from being damaged by the large voltage.
In this embodiment, the normal protection inductor and the standby protection inductor both use air-core coil inductors. One end of the normally-arranged protective inductor is connected with an RF signal (video signal) pin of the Tuner interface.
According to the requirement of Tuner (layout), the distance between the permanent protective inductor and the RF signal pin of the Tuner interface needs to be very close, so that the permanent protective inductor and the standby protective inductor adopt plug-in inductors, and the problems of short circuit and the like caused by the melting of tin by heat generated under strong lightning strike are prevented.
Because of the same inductance value, the larger the wire diameter, the more resistant to the stronger lightning stroke, so the normal protective inductance adopts the inductance with the larger wire diameter, and the standby protective inductance adopts the inductance with the smaller wire diameter. Furthermore, the diameter of a coil wire of the protective inductor is usually set to be 0.4mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 17. The diameter of a standby protective inductance coil wire is 0.3mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 9.
This STB Tuner protection method sets up the protective inductance of standing by and carries out dual protection with reserve protective inductance at Tuner kneck, and the protective inductance of standing by carries out the serialization protection, carries out secondary protection by reserve protective inductance when the abnormal conditions appears to comprehensive effectual STB Tuner protects when the Tuner receives the thunderbolt high energy, avoids causing the damage or the destructive damage to Tuner, avoids causing the incident, can not bring the risk for STB and user.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A set top box Tuner protection device, comprising: the device comprises a permanent protective inductor, a standby protective inductor, a control switch and a voltage detection unit; it connects the Tuner interface to establish protection inductance one end always, and other end ground connection, reserve protection inductance one end is connected control switch one end, other end ground connection, control switch's the other end is connected with Tuner, and the junction is close to beyond the connecting wire that protection inductance and Tuner interface connection formed always establish protection inductance always, control switch locates reserve protection inductance with on the branch road connecting wire that Tuner formed, voltage detection unit is connected with Tuner and set up in between protection inductance and the control switch always, real-time detection voltage detection unit with the voltage of Tuner junction, if when junction voltage is greater than the default, will control switch is closed, switches on reserve protection inductance, otherwise will control switch disconnection.
2. The set top box Tuner protection device of claim 1, wherein the permanent and standby protection inductors are air coil inductors.
3. The set top box Tuner protection device of claim 2, wherein one end of the standing protection inductor is connected to an RF signal pin of the Tuner interface.
4. The set top box Tuner protection device of claim 3, wherein the permanent and standby protection inductors are plug-in inductors.
5. The set top box Tuner protection device of claim 4, wherein the coil wire diameter of the permanent protection inductor is 0.4mm, the inner diameter of the coil is 2.2mm, and the number of coil turns is 17; the diameter of the standby protective inductance coil wire is 0.3mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 9.
6. A set top box Tuner protection method is characterized by comprising the following steps:
s10: setting a normally-arranged protection inductor, wherein one end of the normally-arranged protection inductor is connected with a Tuner interface, and the other end of the normally-arranged protection inductor is grounded;
s20: setting a spare protection inductor and a control switch, wherein one end of the spare protection inductor is connected with one end of the control switch, the other end of the spare protection inductor is grounded, the other end of the control switch is connected with a Tuner and is connected to a position, which is close to the normal equipment protection inductor, outside a connecting line formed by connecting the normal equipment protection inductor with a Tuner interface, and the control switch is arranged on a branch connecting line formed by the spare protection inductor and the Tuner;
s30: and a voltage detection unit is arranged and connected with the Tuner and arranged between the normally arranged protection inductor and the control switch, the voltage of the connection part of the voltage detection unit and the Tuner is detected in real time, if the voltage of the connection part is greater than a preset value, the control switch is closed, the standby protection inductor is switched on, and if not, the control switch is switched off.
7. The set top box Tuner protection method according to claim 6, wherein the permanent protection inductor and the standby protection inductor both use air-core coil inductors.
8. The set top box Tuner protection method of claim 7, wherein one end of the standing protection inductor is connected to an RF signal pin of a Tuner interface.
9. The set top box Tuner protection method according to claim 8, wherein the permanent protection inductor and the standby protection inductor are plug-in inductors.
10. The set top box Tuner protection method according to claim 9, wherein the coil wire diameter of the permanent protection inductor is 0.4mm, the inner diameter of the coil is 2.2mm, and the number of coil turns is 17; the diameter of the standby protective inductance coil wire is 0.3mm, the inner diameter of the coil is 2.2mm, and the number of turns of the coil is 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858545.XA CN107645641B (en) | 2017-09-21 | 2017-09-21 | Tuner protection device and protection method for set top box |
| PCT/CN2018/097427 WO2019056853A1 (en) | 2017-09-21 | 2018-07-27 | Set-top box tuner protection device and protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858545.XA CN107645641B (en) | 2017-09-21 | 2017-09-21 | Tuner protection device and protection method for set top box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107645641A CN107645641A (en) | 2018-01-30 |
| CN107645641B true CN107645641B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710858545.XA Expired - Fee Related CN107645641B (en) | 2017-09-21 | 2017-09-21 | Tuner protection device and protection method for set top box |
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| Country | Link |
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| CN (1) | CN107645641B (en) |
| WO (1) | WO2019056853A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645641B (en) * | 2017-09-21 | 2020-02-07 | 深圳市九洲电器有限公司 | Tuner protection device and protection method for set top box |
| TWI681600B (en) * | 2018-09-14 | 2020-01-01 | 金寶電子工業股份有限公司 | Connector module and set-top box |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492968Y (en) * | 2000-12-19 | 2002-05-22 | 陈吉效 | Signal channel lightning protector for broadcast, TV and communication machines |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4655600B2 (en) * | 2004-11-29 | 2011-03-23 | 船井電機株式会社 | Broadcast receiver |
| EP1806817A1 (en) * | 2006-01-09 | 2007-07-11 | Luis Gonzalo Flores Losada | Oil-immersed electrical equipment with a short-circuiting safety device |
| TWI322617B (en) * | 2006-09-12 | 2010-03-21 | Himax Tech Ltd | A tv tuner and the manufacturing method thereof |
| CN101179677B (en) * | 2006-11-08 | 2011-12-14 | 奇景光电股份有限公司 | Television tuner and manufacturing method thereof |
| CN101447666B (en) * | 2007-11-27 | 2013-10-30 | 深圳迈瑞生物医疗电子股份有限公司 | Power supply system and power overvoltage safety protection control method |
| CN201491153U (en) * | 2009-08-31 | 2010-05-26 | Tcl集团股份有限公司 | TV set top box tuner circuit with interactive receiving function |
| US20120321279A1 (en) * | 2011-06-15 | 2012-12-20 | Rovi Technologies Corporation | Method and apparatus for providing an interactive and or electronic programming guide |
| CN203225714U (en) * | 2013-05-24 | 2013-10-02 | 仪特电子工业（宁波）有限公司 | Anti-lightning filter |
| CN204681245U (en) * | 2015-06-19 | 2015-09-30 | 国网四川省电力公司南充供电公司 | Power source loads open loop protection circuit |
| CN205510242U (en) * | 2016-03-01 | 2016-08-24 | 海德昆仑（北京）科技股份有限公司 | TV with overvoltage protection |
| CN206481055U (en) * | 2017-02-28 | 2017-09-08 | 浙江省地震监测预报研究中心 | Lightning protection device |
| CN107645641B (en) * | 2017-09-21 | 2020-02-07 | 深圳市九洲电器有限公司 | Tuner protection device and protection method for set top box |
-
2017
- 2017-09-21 CN CN201710858545.XA patent/CN107645641B/en not_active Expired - Fee Related
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2018
- 2018-07-27 WO PCT/CN2018/097427 patent/WO2019056853A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492968Y (en) * | 2000-12-19 | 2002-05-22 | 陈吉效 | Signal channel lightning protector for broadcast, TV and communication machines |
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| Publication number | Publication date |
|---|---|
| WO2019056853A1 (en) | 2019-03-28 |
| CN107645641A (en) | 2018-01-30 |
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