CN106028028B - Detection method, device and the device for detecting HDCP function of HDCP function - Google Patents
Detection method, device and the device for detecting HDCP function of HDCP function Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
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Abstract
The disclosure is directed to a kind of detection method of HDCP function, device and devices for detecting HDCP function.The detection method of the HDCP function includes: that equipment under test carries out acquisition operation to the HDCP status information of itself；For equipment under test according to operating result, whether the HDCP function of detecting itself is normal；Equipment under test records testing result.The detection method of the HDCP function can be convenient for operation and cost is relatively low.
Description
Technical field
This disclosure relates to digital communication technology field more particularly to a kind of detection method of HDCP function, device and be used for
Detect the device of HDCP function.
Background technique
In order to adapt to the high bandwidth of high definition television, there is high-definition multimedia interface (High Definition
Multimedia Interface, HDMI).HDMI is a kind of high-definition digital interface, it can provide very high bandwidth, nondestructively
Transmission digital video and audio signal.In order to guarantee HDMI or digital visual interface (Digital Visual Interface,
DVI) the high-resolution signal transmitted will not be recorded illegally, and there have been high-bandwidth digital content protection (High-bandwidth
Digital Content Protection, HDCP) technology.When user carries out bootlegging high-resolution signal, HDCP technology
It will do it interference, the quality for copying the image come reduced, to protect to content.
Webtv box is a kind of intelligent multimedia terminal, can connect television set and internet.Television set can pass through
Webtv box connects internet, watches network TV program.When webtv box is capable of providing high-definition signal, network electricity
Network high definition television box is properly termed as depending on box.HDMI is provided on network high definition television box, and the HDMI can be used
HDCP technology.In order to guarantee the normal work of network high definition television box, need to the HDCP function of the network high definition television box into
Row detection.
In the related technology, the HDCP function of special equipment detection network high definition television box is generallyd use, this mode can
Need special equipment, and inconvenient and higher cost.
Summary of the invention
To overcome the problems in correlation technique, the disclosure provides detection method, device and the use of a kind of HDCP function
In the device of detection HDCP function.
According to the first aspect of the embodiments of the present disclosure, a kind of detection method of HDCP function is provided, comprising: equipment under test pair
The HDCP status information of itself carries out acquisition operation；Whether just equipment under test detects the HDCP function of itself according to operating result
Often；Equipment under test records testing result.
Optionally, further includes: establish data connection with content recipient, and start HDCP function；If HDCP function is just
Often, itself corresponding key selection vector is stored in the status register of itself.
Optionally, the HDCP status information includes: itself corresponding key selection vector, described to be tied according to operation
Whether fruit, the HDCP function of detecting itself are normal, comprising: if itself corresponding key selection vector can be got,
Then determine that the HDCP function of itself is normal.
Optionally, before equipment under test carries out acquisition operation to the HDCP status information of itself, the method also includes: quilt
Measurement equipment obtains the HDCP key of itself storage；Whether the equipment under test detection HDCP key is normal, to hold when normal
The row equipment under test carries out the step of obtaining operation to the HDCP status information of itself.
Optionally, whether the detection HDCP key normal, comprising: determine the key of the HDCP key select to
Measure part；If it is 0 that the key selection vector part, which is not, determine that the HDCP key is normal.
Optionally, whether the detection HDCP key normal, comprising: determine the key of the HDCP key select to
Measure part；If it is 0 that the key selection vector part, which is not, the portion of 20 bytes before the HDCP key is obtained
Point；Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；If institute
Stating remainder is 0, it is determined that the HDCP key is normal.
According to the second aspect of an embodiment of the present disclosure, a kind of detection device of HDCP function is provided, described device is located at quilt
In measurement equipment, described device includes: processing module, carries out acquisition operation for the HDCP status information to equipment under test；Detection
Module, for according to operating result, whether the HDCP function of detecting equipment under test to be normal；Logging modle, for recording detection knot
Fruit.
Optionally, further includes: link block for establishing data connection with content recipient, and starts HDCP function；It deposits
Module is stored up, for when HDCP function is normal, storing the corresponding key choosing of equipment under test in the status register of equipment under test
Select vector.
Optionally, the HDCP status information includes: the corresponding key selection vector of the equipment under test, the detection mould
Block is further used for: when that can get the corresponding key selection vector of the equipment under test, determining the HDCP of equipment under test
Function is normal.
Optionally, further includes: module is obtained, for obtaining the HDCP key of equipment under test storage；Judgment module, for examining
It whether normal surveys the HDCP key, is executed to trigger the processing module when normal.
Optionally, the judgment module is further used for: determining the key selection vector part of the HDCP key；Institute
Stating key selection vector part not is to determine that the HDCP key is normal when being 0.
Optionally, the judgment module is further used for: determining the key selection vector part of the HDCP key；Institute
Stating key selection vector part not is to obtain the part of 20 bytes before the HDCP key when being 0；To the front 20
The part of byte carries out summation operation, and calculate summed result with 256 for mould remainder；When the remainder is 0, institute is determined
It is normal to state HDCP key.
According to the third aspect of an embodiment of the present disclosure, it provides a kind of for detecting the device of HDCP function, comprising: processing
Device；Memory for storage processor executable instruction；Wherein, the processor is configured to: equipment under test to itself
HDCP status information carries out acquisition operation；For equipment under test according to operating result, whether the HDCP function of detecting itself is normal；It is tested
Equipment records testing result.
Optionally, further includes: establish data connection with content recipient, and start HDCP function；If HDCP function is just
Often, itself corresponding key selection vector is stored in the status register of itself.
Optionally, the HDCP status information includes: itself corresponding key selection vector, described to be tied according to operation
Whether fruit, the HDCP function of detecting itself are normal, comprising: if itself corresponding key selection vector can be got,
Then determine that the HDCP function of itself is normal.
Optionally, before equipment under test carries out acquisition operation to the HDCP status information of itself, the method also includes: quilt
Measurement equipment obtains the HDCP key of itself storage；Whether the equipment under test detection HDCP key is normal, to hold when normal
The row equipment under test carries out the step of obtaining operation to the HDCP status information of itself.
Optionally, whether the detection HDCP key normal, comprising: determine the key of the HDCP key select to
Measure part；If it is 0 that the key selection vector part, which is not, determine that the HDCP key is normal.
Optionally, whether the detection HDCP key normal, comprising: determine the key of the HDCP key select to
Measure part；If it is 0 that the key selection vector part, which is not, the portion of 20 bytes before the HDCP key is obtained
Point；Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；If institute
Stating remainder is 0, it is determined that the HDCP key is normal.
According to a fourth aspect of embodiments of the present disclosure, a kind of non-transitorycomputer readable storage medium is provided, when described
When instruction in storage medium is executed by the processor of equipment under test, so that equipment under test is able to carry out a kind of inspection of HDCP function
Survey method, which comprises equipment under test carries out acquisition operation to the HDCP status information of itself；Equipment under test is according to operation
As a result, whether the HDCP function of detecting itself is normal；Equipment under test records testing result.
Optionally, further includes: establish data connection with content recipient, and start HDCP function；If HDCP function is just
Often, itself corresponding key selection vector is stored in the status register of itself.
Optionally, the HDCP status information includes: itself corresponding key selection vector, described to be tied according to operation
Whether fruit, the HDCP function of detecting itself are normal, comprising: if itself corresponding key selection vector can be got,
Then determine that the HDCP function of itself is normal.
Optionally, before equipment under test carries out acquisition operation to the HDCP status information of itself, the method also includes: quilt
Measurement equipment obtains the HDCP key of itself storage；Whether the equipment under test detection HDCP key is normal, to hold when normal
The row equipment under test carries out the step of obtaining operation to the HDCP status information of itself.
Optionally, whether the detection HDCP key normal, comprising: determine the key of the HDCP key select to
Measure part；If it is 0 that the key selection vector part, which is not, determine that the HDCP key is normal.
Optionally, whether the detection HDCP key normal, comprising: determine the key of the HDCP key select to
Measure part；If it is 0 that the key selection vector part, which is not, the portion of 20 bytes before the HDCP key is obtained
Point；Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；If institute
Stating remainder is 0, it is determined that the HDCP key is normal.
The technical scheme provided by this disclosed embodiment can include the following benefits:
Equipment under test obtain the HDCP status information of itself and detect accordingly itself HDCP function it is whether normal, therefore,
Itself detection to the HDCP function of itself may be implemented, do not need to buy special detection device, cost can be reduced, and just
In realization.
Further, by according to whether getting the corresponding key selection vector of equipment under test determines equipment under test
Whether HDCP function is normal, can simplify operation and is easily achieved.
Further, whether normal by first detecting HDCP key before detecting HDCP function, missing inspection feelings can be reduced
Condition.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of flow chart of the detection method of HDPC function shown according to an exemplary embodiment.
Fig. 2 is the flow chart of the detection method of another kind HDCP function shown according to an exemplary embodiment.
Fig. 3 is a kind of detection device block diagram of HDCP function shown according to an exemplary embodiment.
Fig. 4 is the detection device block diagram of another kind HDCP function shown according to an exemplary embodiment.
Fig. 5 is shown according to an exemplary embodiment a kind of for detecting the device block diagram of HDCP function.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 1 is a kind of flow chart of the detection method of HDPC function shown according to an exemplary embodiment, such as Fig. 1 institute
Show, this method can be applied to equipment under test.Include the following steps.
Step S11, equipment under test carry out acquisition operation to the HDCP status information of itself.
Wherein, equipment under test refers to the whether normal equipment of detected HDCP function.
From in the related technology as special equipment detection unlike, in the present embodiment, will by equipment itself completion to itself
HDCP function detection, therefore, which is that the HDCP status information of itself is obtained by equipment under test.
Due to HDCP function to be detected, equipment under test is that have HDMI interface and the high definition with content fan-out capability
Digital device, for example, high definition set top box, high definition DVD player, blu-ray player etc..Further, high definition set top box
It may include: network high definition set top box (such as millet box) or the digital TV in high resolution for receiving digital TV in high resolution signal
Signal set-top box.
In factory testing, equipment under test and content recipient can be established into data connection, and start HDCP function, it is interior
Hold recipient for example, television set, PC (Personal Computer, PC) etc..
It is that can establish net in test for network high definition set top box, content recipient are television sets by equipment under test
The data connection of network high definition set top box and television set, and start HDCP function.
After starting HDCP function, whether high definition set top box and television set can normally give birth to according to the HDCP function of actual motion
At identifying and being stored in status register, above-mentioned mark includes: that aksv (transmitting terminal key selection vector) and bksv (are received
Hold key selection vector).
That is, network high definition set top box can be in the state in network high definition set top box if HDCP function is normal
Aksv is recorded in register, television set can record bksv in status register in a television set.
Therefore, network high definition set top box can using aksv as HDCP status information, in the status register of itself into
Row obtains the operation of aksv.
Step S12, for equipment under test according to operating result, whether the HDCP function of detecting itself is normal.
Wherein, operating result includes: to get aksv or obtain less than aksv.
As it appears from the above, network high definition set top box can store in the status register of itself if HDCP function is normal
Otherwise aksv if HDCP function is abnormal, will not store aksv.
Therefore, equipment under test can determine whether HDCP function is normal according to the acquisition result to aksv.
Specifically, if equipment under test can get aksv from the status register of itself, it is determined that itself
HDCP function is normal, otherwise, if equipment under test cannot get aksv from the status register of itself, it is determined that itself
HDCP function is abnormal.
Step S13, equipment under test record testing result.
After HDCP function that equipment under test obtains itself is normal or abnormal testing result, it can be remembered
Record.
Further, when other equipment need to know the testing result, for example, detection device can in factory's detection
To send the detection request for detecting HDCP function, after equipment under test receives detection request, Ke Yigen to equipment under test
According to the information of record, it will test result and be sent to detection device.
In the present embodiment, equipment under test obtain the HDCP status information of itself and detect accordingly itself HDCP function whether
Normally, it is thereby achieved that itself detection to the HDCP function of itself, does not need to buy special detection device, can drop
Low cost, and be easy to implement.
Fig. 2 is the flow chart of the detection method of another kind HDCP function shown according to an exemplary embodiment.Such as Fig. 2 institute
Show, includes the following steps.
Step S21, equipment under test obtain the HDCP key of itself storage.
Equipment under test can carry out the operation for the HDCP key (HDCP key) for obtaining itself after system operation.
HDCP key can store in nonvolatile random access memory (Non-Volatile Random Access
Memory, NVRAM) in.
Therefore, equipment under test can obtain HDCP key after the system of itself operation from NVRAM.
Step S22, whether equipment under test detects the HDCP key normal, if so, otherwise executing step S23 executes step
Rapid S26.
In some embodiments, the detection whether normal process of HDCP key may include:
Determine the key selection vector part of the HDCP key；
When the key selection vector part is not to be 0, determine that the HDCP key is normal.
In some embodiments, the detection whether normal process of HDCP key may include:
Determine the key selection vector part of the HDCP key；
When the key selection vector part is not to be 0, the part of 20 bytes before the HDCP key is obtained；
Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；
When the remainder is 0, determine that the HDCP key is normal.
Wherein, the length of each HDCP key can be 308 bytes, and wherein effective length can be 285 bytes, 285 words
Key selection vector part (Key Select Vector, KSV) and 40 group 56bits (7 byte) of the section including 40bit (5 byte)
Key value part.Therefore, 5 bytes before available HDCP key obtain key selection vector part, are getting
After 5 bytes before HDCP key, 5 byte is judged whether all for 0, if being all 0, it is determined that HDCP key is abnormal.
It is normal that HDCP key can be directly determined if 5 byte is not to be all 0, under a kind of example.Another example
Under can continue to judge.Continue judgement process include:
5 bytes are not to obtain the part of 20 bytes before HDCP key, and right when being all 0 before HDCP key
The part of 20 byte carries out summation operation, obtains the sum value, it is assumed that and value is indicated with sum, calculating sum later with 256 is mould
Remainder, if the remainder is 0, i.e. sum is 256 integral multiple (such as 256,512), it is determined that HDCP key is normal, otherwise such as
The above-mentioned remainder of fruit is not 0, it is determined that HDCP key is abnormal.
Step S23, equipment under test carry out acquisition operation to the HDCP status information of itself.
Step S24, equipment under test judge whether to get the HDCP status information of itself, if so, step S25 is executed, it is no
Then follow the steps S26.
Step S25, equipment under test determine that the HDCP function of itself is normal.
Step S26, equipment under test determine that the HDCP function of itself is abnormal.
Step S27, equipment under test record itself HDCP function is normal or abnormal testing result.
It is understood that not doing the part of specified otherwise in the present embodiment, the correlation in above-described embodiment may refer to
Description, is no longer described in detail herein.
In the present embodiment, equipment under test obtain the HDCP status information of itself and detect accordingly itself HDCP function whether
Normally, it is thereby achieved that itself detection to the HDCP function of itself, does not need to buy special detection device, can drop
Low cost, and be easy to implement.Further, by being determined according to whether getting the corresponding key selection vector of equipment under test
Whether the HDCP function of equipment under test is normal, can simplify operation and is easily achieved.Further, by detection HDCP function
First whether detection HDCP key is normal before, can reduce missing inspection situation.
Fig. 3 is a kind of detection device block diagram of HDCP function shown according to an exemplary embodiment.Referring to Fig. 3, the dress
Setting 30 includes: processing module 31, detection module 32 and logging modle 33.
Processing module 31 carries out acquisition operation for the HDCP status information to equipment under test；
Detection module 32, for according to operating result, whether the HDCP function of detecting equipment under test to be normal；
Logging modle 33, for recording testing result.
In some embodiments, referring to fig. 4, the device 30 further include:
Link block 34 for establishing data connection with content recipient, and starts HDCP function；
Memory module 35, for storing equipment under test in the status register of equipment under test when HDCP function is normal
Corresponding key selection vector.
In some embodiments, the HDCP status information includes: the corresponding key selection vector of the equipment under test, described
Detection module 32 is further used for:
When the corresponding key selection vector of the equipment under test can be got, the HDCP function of equipment under test is being determined just
Often.
In some embodiments, referring to fig. 4, the device 30 further include:
Module 36 is obtained, for obtaining the HDCP key of equipment under test storage；
Judgment module 37, it is whether normal for detecting the HDCP key, to trigger the processing module when normal
It executes.
In some embodiments, the judgment module 37 is further used for:
Determine the key selection vector part of the HDCP key；
When the key selection vector part is not to be 0, determine that the HDCP key is normal.
In some embodiments, the judgment module 37 is further used for:
Determine the key selection vector part of the HDCP key；
When the key selection vector part is not to be 0, the part of 20 bytes before the HDCP key is obtained；
Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；
When the remainder is 0, determine that the HDCP key is normal.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
In the present embodiment, equipment under test obtain the HDCP status information of itself and detect accordingly itself HDCP function whether
Normally, it is thereby achieved that itself detection to the HDCP function of itself, does not need to buy special detection device, can drop
Low cost, and be easy to implement.Further, by being determined according to whether getting the corresponding key selection vector of equipment under test
Whether the HDCP function of equipment under test is normal, can simplify operation and is easily achieved.Further, by detection HDCP function
First whether detection HDCP key is normal before, can reduce missing inspection situation.
Fig. 5 is shown according to an exemplary embodiment a kind of for detecting the device block diagram of HDCP function.The device can
To be equipment under test 500.Equipment under test is the equipment with HDCP function.For example, equipment under test 500 can be the high clear of network
Top box, digital TV in high resolution signal set-top box, high definition DVD player, blu-ray player etc..
Referring to Fig. 5, it further comprises one or more processors that equipment under test 500, which includes processing component 522, and
The memory resource as representated by memory 532, can be by the instruction of the execution of processing component 522, such as using journey for storing
Sequence.The application program stored in memory 532 may include it is one or more each correspond to one group of instruction mould
Block.In addition, processing component 522 is configured as executing instruction, to execute the above method: equipment under test believes the HDCP state of itself
Breath carries out acquisition operation；For equipment under test according to operating result, whether the HDCP function of detecting itself is normal；Equipment under test record inspection
Survey result.
Equipment under test 500 can also include that a power supply module 526 is configured as executing the power supply pipe of equipment under test 500
Reason, a wired or wireless network interface 550 are configured as equipment under test 500 being connected to network and an input and output (I/
O) interface 558.Equipment under test 500 can be operated based on the operating system for being stored in memory 532, such as Windows
ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or similar.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, example are additionally provided
It such as include the memory 532 of instruction, above-metioned instruction can be executed by the processor of equipment under test 500 to complete the above method: tested
Equipment carries out acquisition operation to the HDCP status information of itself；Equipment under test detects the HDCP function of itself according to operating result
It is whether normal；Equipment under test records testing result.For example, the non-transitorycomputer readable storage medium can be ROM, with
Machine access memory (RAM), CD-ROM, tape, floppy disk and optical data storage devices etc..
In the present embodiment, equipment under test obtain the HDCP status information of itself and detect accordingly itself HDCP function whether
Normally, it is thereby achieved that itself detection to the HDCP function of itself, does not need to buy special detection device, can drop
Low cost, and be easy to implement.Further, by being determined according to whether getting the corresponding key selection vector of equipment under test
Whether the HDCP function of equipment under test is normal, can simplify operation and is easily achieved.Further, by detection HDCP function
First whether detection HDCP key is normal before, can reduce missing inspection situation.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (7)
1. a kind of detection method of HDCP function characterized by comprising
Equipment under test carries out acquisition operation to itself corresponding key selection vector described in itself, and the key selection vector is
What the equipment under test stored in the status register of itself after starting HDCP function, the key selection vector is used for
Indicate that the HDCP function is normal；
If itself corresponding key selection vector can be got, it is determined that the HDCP function of itself is normal；
Equipment under test records testing result；
Wherein, before equipment under test carries out acquisition operation to the key selection vector of itself, the method also includes:
Equipment under test obtains the HDCP key of itself storage；
Equipment under test detects whether the HDCP key is normal, to execute the equipment under test when normal to itself key
Selection vector carries out the step of obtaining operation.
2. the method according to claim 1, wherein whether the detection HDCP key is normal, comprising:
Determine the key selection vector part of the HDCP key；
If it is 0 that the key selection vector part, which is not, determine that the HDCP key is normal.
3. the method according to claim 1, wherein whether the detection HDCP key is normal, comprising:
Determine the key selection vector part of the HDCP key；
If it is 0 that the key selection vector part, which is not, the part of 20 bytes before the HDCP key is obtained；
Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；
If the remainder is 0, it is determined that the HDCP key is normal.
4. a kind of detection device of HDPC function, which is characterized in that described device is located in equipment under test, and described device includes:
Processing module carries out acquisition operation for the corresponding key selection vector of the equipment under test to equipment under test, described
Key selection vector is that the equipment under test stores in the status register of itself after starting HDCP function, described close
It is normal that key selection vector is used to indicate the HDCP function；
Detection module, for determining equipment under test when the corresponding key selection vector of the equipment under test can be got
HDCP function is normal；
Logging modle, for recording testing result；
Wherein, described device further include:
Module is obtained, for obtaining the HDCP key of equipment under test storage；
Judgment module, it is whether normal for detecting the HDCP key, it is executed to trigger the processing module when normal.
5. device according to claim 4, which is characterized in that the judgment module is further used for:
Determine the key selection vector part of the HDCP key；
When the key selection vector part is not to be 0, determine that the HDCP key is normal.
6. device according to claim 4, which is characterized in that the judgment module is further used for:
Determine the key selection vector part of the HDCP key；
When the key selection vector part is not to be 0, the part of 20 bytes before the HDCP key is obtained；
Summation operation is carried out to the part of 20 byte of front, and calculate summed result with 256 for mould remainder；
When the remainder is 0, determine that the HDCP key is normal.
7. a kind of for detecting the device of HDCP function, which is characterized in that described device is equipment under test, and described device includes:
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
Equipment under test carries out acquisition operation to itself corresponding key selection vector described in itself, and the key selection vector is
What the equipment under test stored in the status register of itself after starting HDCP function, the key selection vector is used for
Indicate that the HDCP function is normal；
If itself corresponding key selection vector can be got, it is determined that the HDCP function of itself is normal；
Equipment under test records testing result；
Wherein, before equipment under test carries out acquisition operation to the key selection vector of itself, the method also includes:
Equipment under test obtains the HDCP key of itself storage；
Equipment under test detects whether the HDCP key is normal, to execute the equipment under test when normal to itself key
Selection vector carries out the step of obtaining operation.
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| CN201610472102.2A CN106028028B (en) | 2016-06-24 | 2016-06-24 | Detection method, device and the device for detecting HDCP function of HDCP function |
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| CN107454394A (en) * | 2017-09-22 | 2017-12-08 | 上海帆声图像科技有限公司 | Television set HDCP encryption detection methods based on software verification |
| CN108259895B (en) * | 2017-12-18 | 2020-05-19 | 深圳市双翼科技股份有限公司 | Set top box testing method and system and terminal equipment |
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| CN102665089A (en) * | 2012-03-29 | 2012-09-12 | 深圳创维数字技术股份有限公司 | HDCP function test method, detected terminal and detection terminal |
| CN105245348A (en) * | 2015-10-21 | 2016-01-13 | 广州视源电子科技股份有限公司 | Factory detection method, device and system for HDCP function |
| CN105681882A (en) * | 2016-01-04 | 2016-06-15 | 华为技术有限公司 | Video output control method, video output control device and control circuit |
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