CN104751067A - Picture file security storage method and device - Google Patents

Picture file security storage method and device Download PDF

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Publication number
CN104751067A
CN104751067A CN201310734211.3A CN201310734211A CN104751067A CN 104751067 A CN104751067 A CN 104751067A CN 201310734211 A CN201310734211 A CN 201310734211A CN 104751067 A CN104751067 A CN 104751067A
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China
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data files
picture data
described
generated
comprises
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CN201310734211.3A
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Chinese (zh)
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CN104751067B (en
Inventor
邓伟
李卫伟
田德振
陈桂亮
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北京慧眼智行科技有限公司
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Abstract

The invention provides a picture file security storage method. The method includes storing each generated picture data file into a preset file in the picture data file set generation process; clearing the preset file with the stored picture data file when judging that the picture data file set generation process is stopped; when not all the picture data files are generated and the picture data file generation process is stopped, clearing the stored picture data files in the preset file clearing step to prevent generated picture data files from being stolen in the picture data file set generation process.

Description

A kind of method and apparatus of picture file safe storage

Technical field

The present invention relates to Internet of Things field of anti-counterfeit technology, particularly a kind of method and apparatus of picture file safe storage.

Background technology

At present, mainly contain two kinds of mode production variable data labels: first kind of way is, the ready-made papery version picture file that client provides by artificial printing, as the picture file of the forms such as jpg, jpeg, tiff, bmp, png, wmf, emf and eps, because picture file kind is many, quantity is large, and the artificial error probability of mode of this production variable data label is high, and Business Process Management has a big risk; The second way is, template picture client provided dynamically generates the picture data files of above-mentioned multiple format according to demand, and drive printer to print picture data files, compared with front a kind of mode, picture data files in-time generatin prints immediately, by the process of equipment unified management production control variable data label, decrease the error rate because manual operation produces, be convenient to production run and carry out management control.

Those skilled in the art, when adopting above-mentioned second way print pictures file, find that there is following shortcoming:

In the process of generating pictures set of data files, the picture data files generated is stored in the file of specifying, if generating pictures set of data files process stops, the picture data files generated can be used by other people, and the picture data files that generated cannot be prevented stolen in the process of generating pictures set of data files.

Summary of the invention

In view of this, the invention provides a kind of method and apparatus of picture file safe storage, when judging that obtaining picture data files set generative process midway stops, described removing default file is performed to the operation of removing the picture data files preserved, prevent the picture data files that generated stolen.

The method of picture file safe storage of the present invention comprises:

In the process of generating pictures set of data files, each picture data files generated is saved in default file;

When judging that obtaining picture data files set generative process midway stops, described in removing, preserve the default file of picture data files, otherwise, from described default file, extract the picture data files generated, and process the picture data files extracted.

Preferably, before generated picture data files is saved in default file, the method also comprises: be encrypted generated picture data files.

Preferably, described from described default file, extract the picture data files generated after also comprise:

Be decrypted to extracted picture data files.

Preferably, described method also comprises: when deciphering unsuccessfully, sends the first trigger pip, and described first trigger pip carries the information of the failed picture data files of deciphering, regenerates the failed picture data files of deciphering for triggering.

Preferably, before generated picture data files is saved in default file, described method also comprises: add check code to generated picture data files;

Also comprise after extracting the picture data files generated then from described default file: extracted picture data files is verified.

Preferably, described method also comprises: when verifying unsuccessfully, sends the second trigger pip, and described second trigger pip carries the information of the failed picture data files of verification, regenerates the failed picture data files of verification for triggering.

Preferably, described judgement obtain picture data files set generative process midway stop comprise:

Monitor picture data files set generative process midway to stop; Or, receive the instruction that picture data files set generative process midway stops.

Present invention also offers a kind of device of picture file safe storage, comprising:

Storage unit, in the process of generating pictures set of data files, is saved in default file by each picture data files generated; Clearing cell, for obtain when judgement picture data files set generative process midway stop time, preserved the default file of picture data files described in removing; Extraction unit, for extracting the picture data files generated from described default file; Processing unit, for the treatment of extracted picture data files.

Preferably, described device also comprises: ciphering unit, for being encrypted generated picture data files.

Preferably, described device also comprises: decryption unit, for giving extracted picture data files deciphering.

Preferably, described device also comprises: the first trigger element, for when deciphering unsuccessfully, sends the first trigger pip, described first trigger pip carries the information of the failed picture data files of deciphering, regenerates the failed picture data files of deciphering for triggering.

Preferably, described device also comprises: check code adding device, adds check code for giving generated picture data files; Then described device also comprises: verification unit, for verifying extracted picture data files.

Preferably, described device also comprises: the second trigger element, for when verifying unsuccessfully, sends the second trigger pip, described second trigger pip carries the information of the failed picture data files of verification, regenerates the failed picture data files of verification for triggering.

Preferably, described clearing cell comprises: monitoring subelement, stops for monitoring picture data files set generative process midway; Or, receive subelement, for receiving the instruction that picture data files set generative process midway stops.

As shown in the above, the present invention has following beneficial effect:

The invention provides a kind of method of picture file safe storage, described method comprises: in the process of generating pictures set of data files, and each picture data files generated is saved in default file; When judging that obtaining picture data files set generative process midway stops, described in removing, preserve the default file of picture data files.When all picture data files all do not generate complete, the process of generating pictures data file is stopped, preserved the default file of picture data files described in then removing, prevent in the process generated in picture data files set, the picture data files generated is stolen.

 

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is embodiment of the method one process flow diagram of a kind of picture file safe storage of the present invention;

Fig. 2 is embodiment of the method two process flow diagram of a kind of picture file safe storage of the present invention;

Fig. 3 is embodiment of the method three process flow diagram of a kind of picture file safe storage of the present invention;

Fig. 4 is device embodiment four structural representation of a kind of picture file safe storage of the present invention;

Fig. 5 is device embodiment five structural representation of a kind of picture file safe storage of the present invention;

Fig. 6 is device embodiment six structural representation of a kind of picture file safe storage of the present invention.

 

Embodiment

The invention discloses a kind of method and apparatus of picture file safe storage, if when not generating all picture data files, stop generating pictures data file, then remove all picture data files generated preserved in default file, realize the safe storage of picture data files.

Below in conjunction with accompanying drawing, embodiment is described in detail.

Embodiment one

Fig. 1 is embodiment of the method one process flow diagram of a kind of picture file safe storage of the present invention, and described method comprises:

Step 101: in the process of generating pictures set of data files, is saved in default file by each picture data files generated.

Picture data files set comprises multiple picture data files, in the process generating whole picture data files set, after often generating a picture data files, and then next picture data files is generated, the picture data files generated is saved in default file, until picture data files all in generating pictures set of data files just terminates the process of generating pictures set of data files according to the sequencing generated.

Default file is self-defining a kind of file layout, in the process that can generate at picture data files, stores the picture data files generated.When preserving picture data files, photo current data file can be saved in successively the ending of default file, to read in a certain order when read data files.

Concrete, the file of default file to be suffix the be user-defined format of .boco.

Concrete, generating pictures data file is according to the generate rule picture data files preset by security code and template picture.

Security code is automatically generated by security code software, and length can freedom and flexibility be arranged, and the anti-forge cipher of lack of alignment.Conventional security code comprises one dimension security code and two-dimentional security code.Security code is used for as goods number, and verifies security and the authenticity of commodity.

Template picture is the original image that client provides, after editing template picture, by the template picture after security code and editor according to the generate rule picture data files preset.

Step 102: when judging that obtaining picture data files set generative process midway stops, preserved the default file of picture data files described in removing.

If when generating pictures set of data files midway stops, that is, in the process of the some picture data files in generating pictures set of data files, or the gap between the picture data files that generation two is adjacent, the process of generating pictures set of data files stops, now all picture data files needing to generate are not generated complete, the picture data files generated is kept in default file, in order to prevent the picture data files preserved in default file stolen, need the default file having preserved picture data files described in removing.

Described judgement obtains picture data files set generative process midway and stops there is much possible implementation, and optionally, the specific embodiment of the invention is:

Monitor picture data files set generative process midway to stop;

Or,

Receive the instruction that picture data files set generative process midway stops.

The device removing default file can the generative process of Real-Time Monitoring picture data files set, when monitoring picture data files set generative process midway and stopping, has preserved the default file of picture data files described in removing.

The device of generating pictures set of data files can also when picture data files set generative process midway stops, the instruction of picture data files set generative process midway termination is sent to the device removing default file, when receiving instruction, described in removing, preserve the default file of picture data files.

As shown in the above, the present invention has following beneficial effect:

In the process of generating pictures set of data files, each picture data files generated is saved in default file; When judging that obtaining picture data files set generative process midway stops, described removing default file is performed to the operation of removing the picture data files preserved.When all picture data files all do not generate complete, the process of generating pictures data file is stopped, preserved the default file of picture data files described in then removing, prevent in the process generated in picture data files set, the picture data files generated is stolen.

 

Embodiment two

Fig. 2 is embodiment of the method two process flow diagram of a kind of picture file safe storage of the present invention, and compared with embodiment one, embodiment two also comprises encrypts described picture data files, and described method comprises:

Step 201: in the process of generating pictures set of data files, is encrypted generated picture data files.

If picture data files does not stop in generative process, the picture data files of all generations is stored in default file, and default file also may be copied and usurp.In order to ensure the security of all picture data files stored in default file, often can generate a picture data files, generated picture data files is encrypted.

Be encrypted a variety of possible implementation to picture data files, enumerate two kinds wherein below, other mode repeats no longer one by one:

The first possible implementation: add secret sequence code at picture data files header field or other data areas;

The implementation that the second is possible: according to the data assemblies in predetermined mode realign pictures data file.

Step 202: each picture data files generated is saved in default file.

Here it should be noted that, be saved in default file be encryption after picture data files.

Step 203: when judging that obtaining picture data files set generative process midway stops, preserved the default file of picture data files described in removing.

Similar with embodiment one herein, the description in reference example one, repeats no more.

Step 204: after picture data files set generative process terminates, extract the picture data files generated from described default file.

If do not stop in picture data files generative process, after all picture data files all generate, the picture data files generated can be extracted carry out subsequent treatment from default file.

Step 205: be decrypted to extracted picture data files, judge whether successful decryption, if so, performs step 206, if not, performs step 207.

The picture data files preserved in default file is the picture data files of encryption, needs to be decrypted picture data files.Here it should be noted that, during deciphering picture data files, adopt the decryption method corresponding with encryption method to be decrypted picture data files.

Step 206: process the picture data files extracted.

After the picture data files successful decryption extracted, extracted picture data files can be obtained, can process further described picture data files, as being saved in specified folder, printing, editor or transmission etc.

Step 207: send the first trigger pip, described first trigger pip carries the information of the failed picture data files of deciphering, regenerates the failed picture data files of deciphering for triggering.

Extracted picture data files being deciphered unsuccessfully, in order to ensure the integrality of whole picture data files set, needing to regenerate the failed picture data files of deciphering.Carry the information of the failed picture data files of deciphering in first trigger pip, the numbering of such as picture data files or the numbering etc. of masterplate picture, can trigger and regenerate the failed picture data files of deciphering.

As shown in the above, the present invention also has following beneficial effect:

In picture data files set generative process, often generate a picture data files, generated picture data files is encrypted, after all picture data files all generate, the picture data files generated be kept in default file also cannot be stolen, that is, the present invention not only prevents in picture data files set generative process stolen, stolen after can also preventing picture data files set from generating; Further, for the picture data files that deciphering is failed, in order to ensure the integrality of picture data files set, can also trigger and regenerate the failed picture data files of described deciphering.

 

Embodiment three

Fig. 3 is embodiment of the method three process flow diagram of a kind of picture file safe storage of the present invention, and compared with embodiment one, embodiment three also comprises the verification of extracted picture data files, and described method comprises:

Step 301: in the process of generating pictures set of data files, adds check code to generated picture data files.

Check code, for verifying that whether described picture data files is complete, can adopt cyclic redundancy check (CRC) (Cyclic Redundancy Check, CRC), arithmetic to close verification or parity checking etc. during concrete enforcement.

Optionally, in the specific embodiment of the invention, describedly add check code to generated picture data files to comprise:

Obtain the check code adopting cyclic redundancy check (CRC) to generate;

Described check code is added on the header field of described picture data files.

Here it should be noted that, according to demand check code can be added on header field or other data areas of specifying of picture data files.

Carry out coding by CRC32 mode and obtain check code, the check code of acquisition is added to the header field of picture data files, be used for verifying that whether picture data files is complete.

Step 302: each picture data files generated is saved in default file.

What default file was preserved here is add the picture data files after check code.

Step 303: when judging that obtaining picture data files set generative process midway stops, preserved the default file of picture data files described in removing.

Similar with embodiment one herein, the description in reference example one, repeats no more.

Here the picture data files preserved is the picture data files that with the addition of check code.

Step 304: after picture data files set generative process terminates, extract the picture data files generated from described default file.

If do not stop in picture data files generative process, after all picture data files all generate, the picture data files generated can be extracted carry out subsequent treatment from default file.

Step 305: verify extracted picture data files, judges that whether verification is successful, if so, performs step 306; If not, step 307 is performed.

Verification is mainly used in verifying that whether picture data files is damaged or lose, and can adopt different verification modes according to the difference of the check code added, as CRC check, arithmetic close verification or parity checking.

Optionally, in the specific embodiment of the invention, describedly verification carried out to extracted picture data files comprise:

Resolve the picture data files header field extracted and obtain check code;

Verify according to described check code.

Here it should be noted that, if check code adds the data area that other are specified to, then the data area of specifying from other parses check code.

Step 306: process the picture data files extracted.

After generating all picture data files, the picture data files stored can be extracted successively from default file and carry out subsequent treatment, as being saved in specified folder, printing, editor or transmission etc.

Step 307: send the second trigger pip, described second trigger pip carries the information of the failed picture data files of verification, regenerates the failed picture data files of verification for triggering.

When verifying unsuccessfully, represent that described picture data files is damaged or lose, send the second trigger pip, the information of the failed picture data files of verification is carried in described second trigger pip, trigger the picture data files regenerating a new verification failure, to ensure the integrality of picture data files set.

As shown in the above, the present invention also has following beneficial effect:

In picture data files set generative process, often generate a picture data files, add check code to generated picture data files, whether damage for verifying the picture data files stored in default file or lose, when verifying unsuccessfully, representing that the picture data files extracted is imperfect, sending the second trigger pip, trigger and regenerate the failed picture data files of verification, ensure the integrality of picture data files set.

Here it should be noted that, the method for a kind of picture file safe storage of the present invention can also comprise the encryption in embodiment two and the verification in embodiment three simultaneously, and the execution sequence of cryptographic check does not limit.During generating pictures data file, can first be encrypted in interpolation check code, also can first add check code and encrypt again; In like manner, when extracting picture data files, first can verify and decipher again, also first can decipher and verify again.

 

Embodiment four

Fig. 4 is device embodiment four structural representation of a kind of picture file safe storage of the present invention, and be the device corresponding to method protected with embodiment one, described device comprises:

Storage unit 401, in the process of generating pictures set of data files, is saved in default file by each picture data files generated.

Clearing cell 402, for obtain when judgement picture data files set generative process midway stop time, preserved the default file of picture data files described in removing.

Optionally, described clearing cell 402 comprises:

Monitoring subelement, stops for monitoring picture data files set generative process midway;

Or,

Receive subelement, for receiving the instruction that picture data files set generative process midway stops.

 

Embodiment five

Fig. 5 is device embodiment five structural representation of a kind of picture file safe storage of the present invention, and be the device corresponding to method protected with embodiment two, described device comprises:

Ciphering unit 501, for giving the encryption of described picture data files.

Storage unit 401, in the process of generating pictures set of data files, is saved in default file by each picture data files generated.

Clearing cell 402, for obtain when judgement picture data files set generative process midway stop time, described removing default file is performed to the operation of removing the picture data files preserved.

Extraction unit 502, for after picture data files set generative process terminates, has preserved the default file of picture data files described in removing.

Decryption unit 503, for giving extracted picture data files deciphering, judging that whether described deciphering is successful, if so, entering processing unit 504; If not, the first trigger element 505 is entered.

Processing unit 504, for the treatment of extracted picture data files.

Optionally, described processing unit 504 comprises:

To seal unit, for performing printing to extracted picture data files.

First trigger element 505, for when deciphering unsuccessfully, sends the first trigger pip, and described first trigger pip carries the information of the failed picture data files of deciphering, regenerates the failed picture data files of deciphering for triggering.

 

Embodiment six

Fig. 6 is device embodiment six structural representation of a kind of picture file safe storage of the present invention, and be the device corresponding to method protected with embodiment three, described device comprises:

Check code adding device 601, adds check code for giving generated picture data files.

Described check code adding device 601 comprises:

Obtain subelement, for obtaining the check code adopting cyclic redundancy check (CRC) to generate;

Add subelement, for described check code being added on the header field of described picture data files.

Storage unit 401, in the process of generating pictures set of data files, is saved in default file by each picture data files generated.

Clearing cell 402, for obtain when judgement picture data files set generative process midway stop time, preserved the default file of picture data files described in removing.

Extraction unit 502, for after picture data files set generative process terminates, extracts the picture data files generated from described default file.

Verification unit 602, for verifying extracted image data, judging that whether described verification is successful, if so, entering processing unit 504; If not, the second trigger element 603 is entered.

Processing unit 504, for the treatment of extracted picture data files.

Optionally, described processing unit 504 comprises:

To seal unit, for performing printing to extracted picture data files.

Optionally, described verification unit 602 comprises:

Resolving subelement, obtaining check code for resolving described picture data files header field;

Syndrome unit, for verifying according to described check code.

Second trigger element 603, for when verifying unsuccessfully, sends the second trigger pip, and described second trigger pip carries the information of the failed picture data files of verification, regenerates the failed picture data files of verification for triggering.

Here it should be noted that, the device of a kind of picture file safe storage of the present invention can also comprise ciphering unit, decryption unit and the first trigger element in embodiment five simultaneously, and check code adding device, verification unit and the second trigger element in embodiment six, a kind of device that can encrypt simultaneously and verify is provided.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1. a method for picture file safe storage, is characterized in that, described method comprises:
In the process of generating pictures set of data files, each picture data files generated is saved in default file;
When judging that obtaining picture data files set generative process midway stops, described in removing, preserve the default file of picture data files, otherwise, from described default file, extract the picture data files generated, and process the picture data files extracted.
2. method according to claim 1, is characterized in that, before generated picture data files is saved in default file, the method also comprises:
Generated picture data files is encrypted.
3. method according to claim 2, is characterized in that, described from described default file, extract the picture data files generated after also comprise:
Be decrypted to extracted picture data files.
4. method according to claim 3, is characterized in that, described method also comprises:
When deciphering unsuccessfully, send the first trigger pip, described first trigger pip carries the information of the failed picture data files of deciphering, regenerates the failed picture data files of deciphering for triggering.
5. method according to claim 1, is characterized in that, before generated picture data files is saved in default file, described method also comprises:
Add check code to generated picture data files;
Also comprise after extracting the picture data files generated then from described default file:
Extracted picture data files is verified.
6. method according to claim 5, is characterized in that, described method also comprises:
When verifying unsuccessfully, send the second trigger pip, described second trigger pip carries the information of the failed picture data files of verification, regenerates the failed picture data files of verification for triggering.
7. the method according to claim 1-6 any one, described judgement obtains picture data files set generative process midway and stops to comprise:
Monitor picture data files set generative process midway to stop;
Or,
Receive the instruction that picture data files set generative process midway stops.
8. a device for picture file safe storage, is characterized in that, described device comprises:
Storage unit, in the process of generating pictures set of data files, is saved in default file by each picture data files generated;
Clearing cell, for obtain when judgement picture data files set generative process midway stop time, preserved the default file of picture data files described in removing;
Extraction unit, for extracting the picture data files generated from described default file;
Processing unit, for the treatment of extracted picture data files.
9. device according to claim 8, is characterized in that, described device also comprises:
Ciphering unit, for being encrypted generated picture data files.
10. device according to claim 9, is characterized in that, described device also comprises:
Decryption unit, for giving extracted picture data files deciphering.
11. devices according to claim 10, is characterized in that, described device also comprises:
First trigger element, for when deciphering unsuccessfully, sends the first trigger pip, and described first trigger pip carries the information of the failed picture data files of deciphering, regenerates the failed picture data files of deciphering for triggering.
12. devices according to claim 8, is characterized in that, described device also comprises:
Check code adding device, adds check code for giving generated picture data files;
Then described device also comprises:
Verification unit, for verifying extracted picture data files.
13. devices according to claim 12, is characterized in that, described device also comprises:
Second trigger element, for when verifying unsuccessfully, sends the second trigger pip, and described second trigger pip carries the information of the failed picture data files of verification, regenerates the failed picture data files of verification for triggering.
14. devices according to Claim 8 described in-13 any one, it is characterized in that, described clearing cell comprises:
Monitoring subelement, stops for monitoring picture data files set generative process midway;
Or,
Receive subelement, for receiving the instruction that picture data files set generative process midway stops.
CN201310734211.3A 2013-12-27 2013-12-27 A kind of method and apparatus of picture file secure storage CN104751067B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108829322A (en) * 2018-07-02 2018-11-16 Oppo(重庆)智能科技有限公司 A kind of picture moving method, system and display equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290913A (en) * 2000-06-29 2001-04-11 刘伟中 Cipher anti-fake method of high security
US20040128700A1 (en) * 2002-12-30 2004-07-01 Ming-Da Pan Viewing selection management system
CN1874485A (en) * 2005-05-30 2006-12-06 Ut斯达康通讯有限公司 System for managing digital copyright, and system of operating network TV
CN101425112A (en) * 2008-11-18 2009-05-06 北京大学;北大方正集团有限公司;北京方正阿帕比技术有限公司 Digital exequatur sending system and digital work decipher operation method
CN103258167A (en) * 2013-05-10 2013-08-21 广州杰赛科技股份有限公司 Method for protecting png picture in handheld device
CN103309758A (en) * 2012-03-15 2013-09-18 中国移动通信集团公司 Card application downloading method, system and device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290913A (en) * 2000-06-29 2001-04-11 刘伟中 Cipher anti-fake method of high security
US20040128700A1 (en) * 2002-12-30 2004-07-01 Ming-Da Pan Viewing selection management system
CN1874485A (en) * 2005-05-30 2006-12-06 Ut斯达康通讯有限公司 System for managing digital copyright, and system of operating network TV
CN101425112A (en) * 2008-11-18 2009-05-06 北京大学;北大方正集团有限公司;北京方正阿帕比技术有限公司 Digital exequatur sending system and digital work decipher operation method
CN103309758A (en) * 2012-03-15 2013-09-18 中国移动通信集团公司 Card application downloading method, system and device
CN103258167A (en) * 2013-05-10 2013-08-21 广州杰赛科技股份有限公司 Method for protecting png picture in handheld device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108829322A (en) * 2018-07-02 2018-11-16 Oppo(重庆)智能科技有限公司 A kind of picture moving method, system and display equipment

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