CN104486601A - Anti-theft method of outdoor unit of satellite television receiving system - Google Patents
Anti-theft method of outdoor unit of satellite television receiving system Download PDFInfo
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- CN104486601A CN104486601A CN201510000858.2A CN201510000858A CN104486601A CN 104486601 A CN104486601 A CN 104486601A CN 201510000858 A CN201510000858 A CN 201510000858A CN 104486601 A CN104486601 A CN 104486601A
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- receiving system
- satellite television
- television receiving
- outdoor unit
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Abstract
The invention discloses an anti-theft method of an outdoor unit of a satellite television receiving system. The anti-theft method comprises the steps that firstly, the outdoor unit of the satellite television receiving system works and counts time, and the outdoor unit of the satellite television receiving system receives microwave signals and outputs intermediate frequency signals during working; secondly, the time counting result obtained in the first step is encrypted and calculated to obtain first encrypted data; thirdly, an indoor unit of the satellite television receiving system works and counts time as soon as the indoor unit receives the intermediate frequency signals output by the outdoor unit of the satellite television receiving system; fourthly, the time counting result obtained in the third step is encrypted and calculated to obtain second encrypted data, and the encryption algorithm is the same as the encryption algorithm in the second step; fifthly, the first encrypted data and the second encrypted data are compared, and if the comparison result is consistent, a control signal is output; sixthly, the outdoor unit of the satellite television receiving system is controlled to work after the control signal output in the fifth step is received.
Description
Technical field
The present invention relates to a kind of outdoor unit theft preventing method of satellite television receiving system, belong to satellite signal receiving equipment outdoor unit manufacturing technology field.
Background technology
General satellite television receiving system mainly comprises: antenna, feed, low noise block downconverter, cable, clamped nipple, satellite receiver, television receiver, wherein low noise block downconverter is also referred to as tuner, is by low noise amplifier and the integrated assembly of low-converter.Wherein the assembly such as antenna, feed, low noise block downconverter belongs to outdoor unit, and the assembly such as satellite receiver, television receiver belongs to indoor unit, and the outdoor unit due to satellite television receiving system is placed in open air for a long time, needs to take certain anti-theft measure.In prior art, the anti-theft measure of the outdoor unit of satellite television receiving system is mainly through selecting installation site and adopting not easily detachable fixed form to realize, above-mentioned measure is obviously unfavorable for using of the outdoor unit of satellite television receiving system and installs, even have impact on the reception of satellite television receiving system, bring inconvenience to user.
Summary of the invention
The present invention is just for the deficiency that prior art exists, a kind of outdoor unit theft preventing method of satellite television receiving system is provided, by the mode of built-in anti-theft device, convenience is installed in the use improving the outdoor unit of satellite television receiving system, meets actual operation requirements.
For solving the problem, the technical solution used in the present invention is as follows:
An outdoor unit theft preventing method for satellite television receiving system, comprising:
Step one: the outdoor unit of satellite television receiving system carries out work and timing, receives microwave signal when the outdoor unit of satellite television receiving system works and exports intermediate-freuqncy signal;
Step 2: timing result step one obtained is encrypted and calculates acquisition first enciphered data;
Step 3: the intermediate-freuqncy signal that the outdoor unit that the indoor unit of satellite television receiving system receives satellite television receiving system exports just carries out work and timing;
Step 4: the timing result that step 3 obtains be encrypted and calculate acquisition second enciphered data, the cryptographic algorithm of this step is identical with step 2;
Step 5: the second enciphered data that the first enciphered data obtain step 2 and step 4 obtain contrasts, and exports control signal, otherwise do not export control signal when comparing result is consistent;
Step 6: receive the outdoor unit that namely control signal that step 5 exports control satellite television receiving system and carry out work, otherwise the outdoor unit of satellite television receiving system is quit work.
As the improvement of technique scheme, the cryptographic algorithm in step 2 and step 4 is:
DES(Data EncryptionStandard, data encryption standard) cryptographic algorithm,
Or DSA(Digital Signature Algorithm, Digital Signature Algorithm) cryptographic algorithm,
Or AES(Advanced Encryption Standard, Advanced Encryption Standard) cryptographic algorithm.
As the improvement of technique scheme, in step one, carry out timing to the work of tuner, in step 3, carry out timing to the work of receiver, in step 6, control signal is in order to control the work of tuner.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
The outdoor unit theft preventing method of satellite television receiving system of the present invention, by carrying out timing to the operating time of satellite television receiving system, and as the input value of cryptographic algorithm, thus improve the fail safe of cryptographic algorithm output valve, namely can lose efficacy after the outdoor unit of satellite television receiving system is stolen separately, cannot with the indoor unit cooperating of other satellite television receiving system, thus improve the fail safe of the outdoor unit of satellite television receiving system, achieve antitheft function.
Accompanying drawing explanation
Fig. 1 is the structural representation of the outdoor unit theft preventing method application apparatus of satellite television receiving system of the present invention.
Embodiment
Below in conjunction with specific embodiments content of the present invention is described.
As shown in Figure 1, be the structural representation of the outdoor unit theft preventing method application apparatus of satellite television receiving system of the present invention.The outdoor unit theft preventing method application apparatus of satellite television receiving system of the present invention, comprise: first timer that also operating time can be converted into digital signal output for recording satellite receiving equipment operating time, described first timer is arranged at the outdoor unit of satellite television receiving system; For receiving the digital signal of described first counter output and carrying out computations to export the first encrypting module of coded signal, described first encrypting module is arranged at the outdoor unit of satellite television receiving system; Also operating time can be converted into the second timer of digital signal output for recording satellite receiving equipment operating time, described second timer is arranged at the indoor unit of satellite television receiving system; For receiving the digital signal of described second counter output and carrying out computations to export the second encrypting module of coded signal, described second encrypting module is arranged at the indoor unit of satellite television receiving system; The coded signal comparing exported for receiving described first encrypting module and described second encrypting module determines whether to export the authentication module of control signal, and described authentication module is arranged at the outdoor unit of satellite television receiving system; The control module that the control signal exported for receiving described authentication module makes the outdoor unit of satellite television receiving system normally work, described control module is arranged at the outdoor unit of satellite television receiving system.
Particularly, described control module to be arranged in low noise block downconverter and operation in order to control the integrated chip in low noise block downconverter (i.e. tuner).
The outdoor unit theft preventing method application apparatus of satellite television receiving system of the present invention realizes its anti-theft feature with following method:
Step one: the outdoor unit of satellite television receiving system carries out work and timing, receives microwave signal when the outdoor unit of satellite television receiving system works and exports intermediate-freuqncy signal;
Step 2: timing result step one obtained is encrypted and calculates acquisition first enciphered data;
Step 3: the intermediate-freuqncy signal that the outdoor unit that the indoor unit of satellite television receiving system receives satellite television receiving system exports just carries out work and timing;
Step 4: the timing result that step 3 obtains be encrypted and calculate acquisition second enciphered data, the cryptographic algorithm of this step is identical with step 2;
Step 5: the second enciphered data that the first enciphered data obtain step 2 and step 4 obtain contrasts, and exports control signal, otherwise do not export control signal when comparing result is consistent;
Step 6: receive the outdoor unit that namely control signal that step 5 exports control satellite television receiving system and carry out work, otherwise the outdoor unit of satellite television receiving system is quit work.
In above-mentioned steps two and step 4, the cryptographic algorithm of computations includes but not limited to:
DES(Data EncryptionStandard, data encryption standard) cryptographic algorithm,
DSA(Digital Signature Algorithm, Digital Signature Algorithm) cryptographic algorithm,
AES(Advanced Encryption Standard, Advanced Encryption Standard) cryptographic algorithm etc.
Because the work of the outdoor unit of satellite television receiving system and the indoor unit of satellite television receiving system has synchronism, therefore the digital signal of the timing result of step one acquisition and the digital signal of described first timer output and the timing result that step 3 obtains and described second timer output is identical, as long as ensure that the cryptographic algorithm in step 4 and described second encrypting module is identical with the cryptographic algorithm in step 2 and described first encrypting module, the coded signal that the coded signal that first enciphered data and described first encrypting module export and the second enciphered data and described second encrypting module export also can be identical, step 5 and described authentication module will export control signal, the outdoor unit of satellite television receiving system is made to carry out work.
After the outdoor unit of satellite television receiving system is stolen, because the timing result of the second timer of the timing result of the first timer in the outdoor unit of satellite television receiving system and the indoor unit of new satellite television receiving system is inconsistent, therefore by described first encrypting module and described second encrypting module export coded signal not identical, authentication module stops exporting control signal, and the outdoor unit of satellite television receiving system is quit work.
Particularly, because the tuner in the outdoor unit of satellite television receiving system is usually containing one or several integrated chips, therefore can authentication module and control module be integrated in above-mentioned integrated chip, thus improve the fail safe of the outdoor unit theft preventing method application apparatus of satellite television receiving system, also can destroy tuner while destroying the outdoor unit theft preventing method application apparatus of satellite television receiving system, the outdoor unit entirety of satellite television receiving system cannot be worked.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (3)
1. the outdoor unit theft preventing method of satellite television receiving system, is characterized in that, comprising:
Step one: the outdoor unit of satellite television receiving system carries out work and timing, receives microwave signal when the outdoor unit of satellite television receiving system works and exports intermediate-freuqncy signal;
Step 2: timing result step one obtained is encrypted and calculates acquisition first enciphered data;
Step 3: the intermediate-freuqncy signal that the outdoor unit that the indoor unit of satellite television receiving system receives satellite television receiving system exports just carries out work and timing;
Step 4: the timing result that step 3 obtains be encrypted and calculate acquisition second enciphered data, the cryptographic algorithm of this step is identical with step 2;
Step 5: the second enciphered data that the first enciphered data obtain step 2 and step 4 obtain contrasts, and exports control signal, otherwise do not export control signal when comparing result is consistent;
Step 6: receive the outdoor unit that namely control signal that step 5 exports control satellite television receiving system and carry out work, otherwise the outdoor unit of satellite television receiving system is quit work.
2. the outdoor unit theft preventing method of satellite television receiving system as claimed in claim 1, is characterized in that, the cryptographic algorithm in step 2 and step 4 is:
DES(Data EncryptionStandard, data encryption standard) cryptographic algorithm,
Or DSA(Digital Signature Algorithm, Digital Signature Algorithm) cryptographic algorithm,
Or AES(Advanced Encryption Standard, Advanced Encryption Standard) cryptographic algorithm.
3. the outdoor unit theft preventing method of satellite television receiving system as claimed in claim 1, it is characterized in that, in step one, carry out timing to the work of tuner, in step 3, carry out timing to the work of receiver, in step 6, control signal is in order to control the work of tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000858.2A CN104486601B (en) | 2015-01-04 | 2015-01-04 | The outdoor unit theft preventing method of satellite television receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000858.2A CN104486601B (en) | 2015-01-04 | 2015-01-04 | The outdoor unit theft preventing method of satellite television receiving system |
Publications (2)
| Publication Number | Publication Date |
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| CN104486601A true CN104486601A (en) | 2015-04-01 |
| CN104486601B CN104486601B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510000858.2A Expired - Fee Related CN104486601B (en) | 2015-01-04 | 2015-01-04 | The outdoor unit theft preventing method of satellite television receiving system |
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2015
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| Publication number | Publication date |
|---|---|
| CN104486601B (en) | 2017-06-30 |
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