CN105825088A - Multimedia data processing device and multimedia data copyright protection method - Google Patents

Abstract

A multimedia data processing device and a multimedia data copyright protection method are provided. The multimedia data processing device comprises a multimedia processing module, a storage module, a watermark implantation module and an audio-video output port. The multimedia processing module receives the multimedia file and decodes the multimedia file belonging to the first multimedia data format to obtain decoded multimedia data belonging to the second multimedia data format. The storage module stores copyright protection information, and the watermark embedding module is coupled with the multimedia processing module and the storage module. The watermark embedding module reads the copyright protection information from the storage module, generates a digital watermark by using the copyright protection information, and embeds the digital watermark into the decoded multimedia data to obtain multimedia output data. The audio-video output port is coupled with the watermark embedding module and outputs the multimedia output data.

Description

Multimedia data processing device and multimedia data copyright protection method

technical field

The present invention relates to a multimedia data processing device and a multimedia data copyright protection method, and in particular to a multimedia data processing device and a multimedia data copyright protection method capable of implanting digital watermarks.

Background technique

With the advent of the Internet age, communication networks all over the world can provide not only a convenient communication channel, but also people can use various electronic devices to download network resources, play digital images, and download cable anytime and anywhere through the communication network. Listen to music, or even read e-books. Through the communication network, it not only creates a richer and more interesting life for modern people, but also improves the convenience for people to obtain and exchange information with each other. The universality of the Internet will also lead to various copyright-related issues such as illegal copying, use, or transmission of data. How to protect digital content circulating on the Internet has gradually become one of the topics that everyone focuses on.

Digital multimedia data is easily copied and spread maliciously without the authorization of the copyright owner, and digital rights management (Digital Rights Management, DRM) and watermark implantation technology are both technologies used to protect digital content and copyright. Digital rights management technology can encrypt digital content and restrict its circulation channels, so that only authorized electronic devices are allowed to open and use it. In addition, digital multimedia data must have measures to protect intellectual property rights in order to protect the legitimate rights and interests of copyright owners. For the current common digital watermark implantation technology, it usually embeds the watermark with copyright information into the multimedia file when the work is published. For example, the digital watermark carried by a digitized musical work may include a copyright identification code and a serial number of the work itself. Therefore, when the act of piracy is suspected, watermark detection technology can be used to extract the watermark from the suspected piracy of digital music works, and then determine the ownership of the copyright, but there is no way to know when and where the act of piracy occurred Learned.

Contents of the invention

In view of this, the present invention provides a multimedia data processing device and a multimedia data copyright protection method, which can embed a digital watermark after the multimedia file is decoded, so as to protect the copyright of the multimedia file more perfectly through the digital watermark.

The invention proposes a multimedia data processing device, which includes a multimedia processing module, a storage module, a watermark implantation module and an audio-video output port. The multimedia processing module receives multimedia files, and decodes the multimedia files belonging to the first multimedia data format to obtain decoded multimedia data belonging to the second multimedia data format. The storage module stores copyright protection information, and the watermark implantation module is coupled to the multimedia processing module and the storage module. The watermark implanting module reads the copyright protection information from the storage module, uses the copyright protection information to generate a digital watermark, and embeds the digital watermark into the decoded multimedia data to obtain multimedia output data. The video and audio output port is coupled to the watermark implantation module, and outputs the multimedia output data.

In an embodiment of the present invention, the multimedia processing module includes a multimedia decryption module and a multimedia decoding module. The multimedia decryption module performs a decryption operation on the multimedia file to obtain decrypted multimedia data, and the multimedia decoding module is coupled to the multimedia decryption module and receives the decrypted multimedia data. The multimedia decoding module decodes the decrypted multimedia data to obtain decoded multimedia data belonging to a second multimedia data format.

In an embodiment of the present invention, the multimedia data processing device further includes a main processing module and a protected storage module. The main processing module is coupled to the multimedia decryption module, and the main processing module provides multimedia files to the multimedia decryption module. The protected storage module is coupled to the multimedia decryption module, the multimedia decoding module and the watermark implantation module. The protected storage module receives decrypted multimedia data from the multimedia decryption module, and receives decoded multimedia data from the multimedia decoding module. The main processing module cannot access the protected storage module.

In an embodiment of the present invention, the copyright protection information includes one of a device identification code associated with a multimedia data processing device, a file identification code associated with a multimedia file, a copyright identification code associated with a multimedia file, or a combination thereof .

In an embodiment of the present invention, the copyright protection information further includes decoding time information generated based on the decoding of the multimedia file by the multimedia processing module, and the watermark implantation module further generates a digital float according to the copyright protection information including the decoding time information. watermark.

In an embodiment of the present invention, the multimedia data processing device further includes a watermark format conversion module, and the watermark format conversion module is coupled between the watermark implantation module and the storage module. The watermark format conversion module converts the copyright protection information belonging to the first data format into a bitmap, so that the watermark implantation module uses the bitmap as a digital watermark.

From another point of view, the present invention provides a multimedia data copyright protection method, the multimedia data copyright protection method includes the following steps. Provides copyright protection information. The multimedia file is received, and the multimedia file belonging to the first multimedia data format is decoded to obtain decoded multimedia data belonging to the second multimedia data format. The copyright protection information is used to generate a digital watermark, and the digital watermark is embedded in the decoded multimedia data to obtain multimedia output data. Output multimedia output data.

Based on the above, the present invention can use the unique information of the multimedia data processing device to generate a corresponding digital watermark, and embed the digital watermark after decoding the multimedia file and before broadcasting the decoded multimedia data, so as to protect the copyright of the multimedia file. In this way, the digital watermark can be extracted from the stolen multimedia file to confirm the copyright ownership and related information of the pirated recording, so as to further punish and warn the pirated recording after the multimedia file is decrypted and decoded.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a multimedia data playing system according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram of a multimedia data processing device according to an embodiment of the present invention.

FIG. 3 is a flowchart of a copyright protection method for multimedia data according to an embodiment of the invention.

FIG. 4 is a schematic diagram of a multimedia data processing device according to another embodiment of the present invention.

Explanation of reference signs

100: remote server

200: Multimedia data processing device

300: multimedia data playback device

800: network

210, 410: multimedia processing module

220, 420: storage module

230, 430: watermark implantation module

240, 440: audio and video output ports

450: main processing module

460: Protected storage module

470: Watermark format conversion module

d1, m1: multimedia files

d2: Copyright protection information

d3, m4, m4': decoded multimedia data

d4, m8: multimedia output data

m3, m3': file identification code

m2: decrypted multimedia data

m5: device identification code

m6: copyright identification code

m7: digital watermark

S310-S340: each step of the multimedia data copyright protection method described in an embodiment of the present invention

detailed description

Although today's encryption and encoding mechanisms can protect the copyright of multimedia data, interested people can still use a device with decryption and decoding capabilities to steal and record the decrypted and decoded multimedia data from the audio-visual output port. Based on this, the multimedia data processing device of the present invention can embed a digital watermark after decrypting and decoding the multimedia data, and the digital watermark carries the unique information of the multimedia data processing device. In this way, by checking the digital watermark in the multimedia data, it can be known whether the act of piracy occurs. In order to make the content of the present invention clearer, the following examples are listed as examples in which the present invention can actually be implemented.

FIG. 1 is a schematic diagram of a multimedia data playing system according to an embodiment of the present invention. Referring to FIG. 1 , the multimedia data playing system includes a server platform 100 , a multimedia data processing device 200 and a multimedia data playing device 300 . The multimedia data processing device 200 is connected to the server platform 100 via the network 800 to receive multimedia files from the server platform 100 . Multimedia files may be music, video, games, etc., and the present invention is not limited to this.

The server platform 100 may be composed of one or more server devices, and is used to provide various multimedia files to client devices through the network 800 . In other words, the server platform 100 is a content provider of multimedia files, and can provide corresponding multimedia files according to the authorization status of the multimedia data processing device 200 . For example, the server platform 100 is installed with Digital Rights Management (DRM) software, so that multimedia files can be protected by DRM. For example, the server platform 100 may be a music supply platform for supplying music files. In addition, the server platform 100 may also be a video supply platform for supplying video files, and the video files may include audio and video. The server platform 100 can provide authorized music files or video files to the multimedia data processing device 200 according to the authorization status of the multimedia data processing device 200 .

The network 800 may be a wireless or wired wide-area communication network, such as wired Internet, Worldwide Interoperability for Microwave Access (WiMAX), third generation communication (3G), fourth generation communication (4G), etc. limit. In addition, the network 800 can also be a wireless or wired local communication network, such as a wired local intranet, wireless compatibility authentication (Wi-Fi), Bluetooth (Bluetooth), etc., and the present invention is not limited thereto.

The multimedia data processing device 200 is used to receive multimedia files, and decrypt and decode the multimedia files, such as a digital set-top box (SetTopBox, STB), a multimedia data processing device in an electronic device such as a video game console or a DVD player. The multimedia data player 300 is, for example, a screen or a loudspeaker, which can transmit video and audio through such as a high definition multimedia interface (high definition multimedia interface, HDMI), a Sony-Philips digital interface (Sony/Philips Digital Interface, SPDIF) or an RCA terminal (Radio Corporation of America, RCA). The interface is connected with the multimedia data processing device 200 .

In addition, the multimedia data processing device 200 can also be combined with the multimedia data playing device 300 to be a smart TV (SmartTV), an Internet TV (InternetTV), a smart phone (smartphone), a tablet computer (tabletPC), a notebook computer (notebook), a handheld game Computers or desktop computers and other electronic devices with multimedia data processing and multimedia playback capabilities.

In one embodiment, the multimedia data processing device 200 can receive the multimedia file provided by the server platform 100 and decrypt the multimedia file according to the encryption and decryption mechanism agreed with the server platform 100 . Afterwards, the multimedia data processing device 200 decodes the decrypted multimedia data to generate decoded multimedia data suitable for playing by the multimedia data playing device 300 . It is worth mentioning that before the multimedia data processing device 200 transmits the decoded multimedia data to the multimedia data playback device 300 for playback, the multimedia data processing device 200 embeds a digital watermark (Digital Watermarking) into the decoded multimedia data .

It should be noted that digital watermarking technology embeds some identification information directly into digital multimedia data (including multimedia, documents, software, etc.), which not only does not affect the use value of the original carrier, but also is not easy to be detected and modified again. In one embodiment, in addition to identification information such as the title of the work, content creator, copyright owner, or purchaser, the digital watermark of the present invention also has unique information of the multimedia data processing device 200, such as only the multimedia data processing device has device identification code or network address information, etc. In one embodiment, the digital watermark of the present invention may carry time information for decoding the multimedia file by the multimedia data processing device 200 .

In this way, if an interested person illegally copies the digital content that has been decrypted and decoded by the multimedia data processing device 200, the digital watermark of the present invention can be used to confirm whether the copyright owner and the user are authorized to use the multimedia document. Furthermore, since any duplicated version of the multimedia data will include the digital watermark generated by the multimedia data processing device 200, the act of pirating from the audio-video output port of the multimedia data processing device 200 can be detected by detecting the digital watermark in the multimedia data. Digital watermark to confirm. Based on this, the method can effectively and efficiently protect the copyright of multimedia data.

In order to describe in detail how the multimedia data processing device 200 embeds the digital watermark, FIG. 2 is a schematic block diagram of a multimedia data processing device according to an embodiment of the present invention. Referring to FIG. 2 , the multimedia data processing device 200 includes a multimedia processing module 210 , a storage module 220 , a watermark embedding module 230 and an audio-video output port 240 . The multimedia processing module 210, the storage module 220 and the watermark implantation module 230 can be implemented by hardware circuits. Furthermore, the storage module 220 is, for example, an editable logic array inside the chip, and the multimedia processing module 210 and the watermark implantation module 230 are circuits composed of a plurality of logic gates.

Based on the consideration of data security and transmission through the network, the multimedia file d1 received from the network is generally processed by encoding, encryption and compression. In contrast, the multimedia processing module 210 of this embodiment needs to decode, decrypt and decompress the multimedia file d1 in order to use or play the contents of the multimedia file d1. Therefore, the multimedia processing module 210 receives the multimedia file d1, and decodes the multimedia file d1 belonging to the first multimedia data format to obtain decoded multimedia data d3 belonging to the second multimedia data format. In short, the multimedia processing module 210 is used to convert the multimedia file d1 into decoded multimedia data d3 suitable for playing. For example, assuming that the multimedia file d1 is an audio file, the first multimedia data format can be a third-generation sound file compression format (MPEGAudioLayer-3, MP3), and the multimedia processing module 210 can decode the multimedia file d1 belonging to the MP3 format. The decoded multimedia data d3 belonging to the Pulse Coding Modulation format (PCM format) is acquired, but the invention is not limited thereto.

The storage module 220 is used for storing the copyright protection information d2. The copyright protection information d2 may include user account data, data identification information, content provider identification information, device identification information, or a combination of these data. It should be noted that the copyright protection information d2 can be burned into the storage module 220 when the multimedia data processing device 200 leaves the factory, or it can be obtained by the multimedia data processing device 200 in other ways and written into the storage module 220 , the present invention is not limited to this. More specifically, the multimedia data processing device 200 can receive the copyright protection information d2 through the network and write it into the storage module 220, and the multimedia data processing device 200 also uses information generated by other internal circuits as the copyright protection information d2 and writes it to the storage module 220. into the storage module 220.

The watermark implantation module 230 is coupled to the multimedia processing module 210 and the storage module 220 to generate a corresponding digital watermark according to the copyright protection information d2. Furthermore, the watermark embedding module 230 reads the copyright protection information d2 from the storage module 220, uses the copyright protection information d2 to generate a digital watermark, and embeds the digital watermark into the decoded multimedia data d3 to obtain the multimedia output data d4. Afterwards, the watermark embedding module 230 further outputs the multimedia output data d4 suitable for playing to the audio-video output port 240 . The audio-visual output port 240 is coupled to the watermark implantation module 230 for outputting multimedia output data. The audio-visual output port 240 is a digital audio-visual transmission interface, such as supporting high-definition multimedia interface, Sony-Philips digital interface, or RCA terminal, etc. The interface of the video and audio transmission format is not limited in the present invention.

In this way, the multimedia output data d4 decoded by the multimedia data processing device 200 has a specific digital watermark, so the illegal recording of the output of the audio-video output port 240 can be confirmed through the detection of the digital watermark. In addition, since the digital watermark can carry the unique information of the multimedia data processing device that generates the digital watermark, inspectors can know where the piracy occurred based on the content of the digital watermark. It is worth mentioning that the copyright protection information in this embodiment may further include decoding time information generated based on the decoding of the multimedia file d1 by the multimedia processing module 210, and the watermark embedding module 230 may generate based on the copyright protection information including the decoding time information Digital watermark. For example, assuming that the multimedia processing module 210 decodes the multimedia file d1 on the mm-dd day of the year yyyy, the watermark embedding module 230 can generate a digital watermark including the identification code "yyyymmdd". In this way, inspectors can also know the exact time when the piracy occurred based on the content of the digital watermark.

FIG. 3 is a flowchart of a copyright protection method for multimedia data according to an embodiment of the invention. In this embodiment, the multimedia data copyright protection method is applicable to the multimedia data processing device 200 as shown in FIG. 1 or FIG. 2 , but the present invention is not limited thereto. First, in step 310, copyright protection information is provided. The copyright protection information may include one of a device identification code associated with a multimedia data processing device, a file identification code associated with a multimedia file, a copyright identification code associated with a multimedia file, or a combination thereof. In step 320, the multimedia file is received, and the multimedia file belonging to the first multimedia data format is decoded to obtain decoded multimedia data belonging to the second multimedia data format. In step 330, the copyright protection information is used to generate a digital watermark, and the digital watermark is embedded in the decoded multimedia data to obtain multimedia output data. In step 340, the multimedia output data is output.

In this way, whenever the digitally watermarked multimedia output data is copied or transmitted to another device, the digital watermark will remain embedded in each copied version. The digital watermark can be read to identify the device information, copyright information, and work information of the device that decodes the multimedia file, thereby preventing users from illegally copying or sharing digital data. For example, the PCM data generated after music file decoding can be dynamically implanted with a digital watermark before being pushed to the playback device, so it can effectively confirm the occurrence of piracy and obtain relevant information about piracy.

However, the implementation manner of the present invention is not limited to the above description, and the content of the above embodiments may be modified according to actual needs. For example, in another embodiment of the present invention, the present invention also uses the information obtained after decryption as a basis for generating a digital watermark, so as to produce a digital watermark containing more information. In addition, in order to increase the robustness of the digital watermark, the copyright protection information can also be converted into a bitmap to generate a more indestructible digital watermark. Another embodiment will be described in detail below.

FIG. 4 is a schematic diagram of a multimedia data processing device according to another embodiment of the present invention. Please refer to FIG. 4, the multimedia data processing device of this embodiment includes a multimedia processing module 410, a storage module 420, a watermark implantation module 430, an audio-visual output port 440, a main processing module 450, a protected storage module 460 and a watermark format conversion module 470 . Wherein, the coupling relationship and functions of the storage module 420, the watermark implantation module 430, and the audio-visual output port 440 are the same or similar to those of the storage module 220, the watermark implantation module 230, and the audio-visual output port 240 shown in FIG. .

It should be noted that the multimedia processing module 410 of this embodiment includes a multimedia decryption module 411 and a multimedia decoding module 412 . The multimedia decryption module 411 performs a decryption operation on the multimedia file m1 to obtain decrypted multimedia data m2. The multimedia decoding module 412 is coupled to the multimedia decryption module 411 and receives the decrypted multimedia data m2. The multimedia decoding module 412 decodes the decrypted multimedia data m2 to obtain decoded multimedia data m4 belonging to the second multimedia data format.

In addition, the multimedia data processing device of this embodiment further includes a main processing module 450 and a protected storage module 460 . The main processing module 450 is coupled to the multimedia decryption module 411, and the main processing module 450 is a main processing unit for running an application program in a multimedia data processing device, such as a central processing unit (CPU) or a microprocessor (MCU). Not limited. That is to say, the main processing module 450 can obtain the multimedia file m1 from the remote server platform by running a specific application program. The main processing module 450 provides the multimedia file m1 to the multimedia data processing module 410 for processing such as decryption, decoding or decompression.

For example, the main processing module 450 can execute the music playing and downloading program to obtain the music list provided by the server platform, and the user can select the music file to be downloaded and played from the music list. Therefore, the main processing module 450 can obtain the selected music file through the network. The main processing module 450 provides the selected music files to the multimedia data processing module 410, and the multimedia data processing module 410 further deciphers, decodes or decompresses the selected music files to generate audio files that can be transmitted through the audio-visual output port. 440 file format for transmission.

In this embodiment, the main processing module 450 provides the multimedia file m1 to the multimedia decryption module 411, so that the multimedia decryption module 411 can decrypt the multimedia file m1 according to the protocol's good decryption mechanism. However, the present invention does not limit the decryption mechanism used by the multimedia decryption module 411 . The multimedia decryption module 411 can use the key to decrypt the multimedia file m1, so as to decrypt the multimedia file m1 belonging to ciphertext (CipherText) into decrypted multimedia data m2 belonging to plaintext (PlainText). It is worth mentioning that the multimedia decryption module 411 of this embodiment can also obtain the file identification code m3 of the multimedia file m1 after decrypting the multimedia file m1. The file identification code m3 is an identification code used to identify the multimedia file m1. Different multimedia files have their corresponding file identification codes, such as work identification numbers.

The multimedia decoding module 412 decodes the decrypted multimedia data m2 to obtain decoded multimedia data m4. For example, when the decrypted multimedia data m2 is in MP3 format, the multimedia decoding module 412 can decode the decrypted multimedia data m2 in MP3 format into decoded multimedia data m4 in PCM format. The protected storage module 460 is coupled to the multimedia decryption module 411 , the multimedia decoding module 412 and the watermark implantation module 430 . The protected storage module 460 receives the decrypted file identification code m3 from the multimedia decryption module 411 and receives the decoded multimedia data m4 from the multimedia decoding module 412 . In this embodiment, the main processing module 450 cannot access the data in the protected storage module 460, so as to further enhance the confidentiality and security of the multimedia data.

In addition to the file identification code m3, the copyright protection information in this embodiment also includes a device identification code m5 and a copyright identification code m6 stored in the storage module 420 . The device identification code m5 is an identification code used to identify a multimedia data processing device. Different multimedia data processing devices have their own corresponding device identification codes, such as the decoding chip identification code (ChipID) of a multimedia data processing device, multimedia data processing device A Media Access Control (MAC) address of the device or an Internet Protocol (Internet Protocol, IP) address of the multimedia data processing device, etc. The copyright identification code m6 is an identification code for identifying the copyright of the multimedia file m1, and can be used to identify the copyright owner or creator of the multimedia file m1.

The watermark implantation module 430 can embed the digital watermark m7 generated according to the file identification code m3', the device identification code m5 and the copyright identification code m6 into the decoded multimedia data m4' in the protected storage module to generate The multimedia output data m8 of the watermark m7. It is worth mentioning that the multimedia data processing device of this embodiment further includes a watermark format conversion module 470 , and the watermark format conversion module 470 is coupled between the watermark implantation module 430 and the storage module 420 . The watermark format conversion module 470 can convert the copyright protection information belonging to the first data format into a bitmap represented by two bits, so that the watermark embedding module 430 uses the bitmap as the digital watermark m7. The advantage of using a bitmap as an implanted watermark is that it is more identifiable and can effectively resist damage to digital watermarks caused by resampling or recompression. For example, assuming that the first data format is in the form of ASCII codes, the watermark format conversion module 470 can convert the file identification code m3', device identification code m5, and copyright identification code m6 belonging to the ASCII code into corresponding bitmaps, This causes the watermark embedding module 430 to embed the bitmap into the decoded multimedia data m4' as a digital watermark m7.

After the watermark embedding module 430 embeds the digital watermark m7 into the decoded multimedia data m4', the watermark embedding module 430 outputs the multimedia output data m8 with the digital watermark m7 to the video output port 440. In this way, regardless of whether the multimedia output data m8 is transmitted or copied to another device, converted into other formats, recorded to other multimedia carriers, or played synchronously on a portable device, any form of multimedia output data m8 has digital Watermark m7. Since the multimedia output data m8 decoded by the multimedia data processing device contains a digital watermark m7 that can be used to identify the multimedia data processing device, users will be very careful with multimedia files to avoid illegal piracy and copying .

To sum up, the present invention can utilize the unique information of the multimedia data processing device to generate a corresponding digital watermark, and the digital watermark can be established based on the identity of the multimedia data processing device and embedded in the decoded multimedia data. In this way, by extracting the digital watermark from the stolen multimedia files, the relevant information of copyright ownership and piracy can be confirmed, so as to further punish and warn the piracy that occurs after the multimedia files are decrypted and decoded. In addition, the copyright protection information used to generate the digital watermark can include decoding time information, so that inspectors can verify when and where the acts of piracy and illegal duplication occurred based on the digital watermark.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (12)

1. A multimedia data processing device, characterized in that, comprising: The multimedia processing module receives a multimedia file, and decodes the multimedia file belonging to the first multimedia data format to obtain decoded multimedia data belonging to the second multimedia data format; A storage module for storing copyright protection information; A watermark embedding module, coupled to the multimedia processing module and the storage module, reads the copyright protection information from the storage module, uses the copyright protection information to generate a digital watermark, and embeds the digital watermark into the decoded multimedia data and obtain multimedia output data; and The audio-video output port is coupled to the watermark embedding module to output the multimedia output data. 2. The multimedia data processing device as claimed in claim 1, wherein the multimedia processing module comprises: a multimedia decryption module, which performs a decryption operation on the multimedia file to obtain decrypted multimedia data; and The multimedia decoding module is coupled to the multimedia decryption module, receives the decrypted multimedia data, and decodes the decrypted multimedia data to obtain the decoded multimedia data belonging to the second multimedia data format. 3. The multimedia data processing device as claimed in claim 2, wherein the multimedia data processing device further comprises: a main processing module, coupled to the multimedia decryption module, the main processing module provides the multimedia file to the multimedia decryption module; and The protected storage module is coupled to the multimedia decryption module, the multimedia decoding module and the watermark implantation module, receives the decrypted multimedia data from the multimedia decryption module, and receives the decoded multimedia data from the multimedia decoding module, wherein the main The processing module cannot access the protected storage module. 4. The multimedia data processing device according to claim 1, wherein the copyright protection information includes a device identification code associated with the multimedia data processing device, a file identification code associated with the multimedia file, and a file identification code associated with the multimedia file. One or a combination of the file's copyright identifiers. 5. The multimedia data processing device according to claim 1, wherein the copyright protection information further includes decoding time information generated based on the multimedia processing module decoding the multimedia file, and the watermark embedding module further includes The copyright protection information of the decoding time information is used to generate the digital watermark. 6. The multimedia data processing device as claimed in claim 1, further comprising: The watermark format conversion module is coupled between the watermark implantation module and the read-only storage module, and the watermark format conversion module converts the copyright protection information belonging to the first data format into a bitmap, so that the watermark implantation module will The bitmap is used as the digital watermark. 7. A multimedia data copyright protection method, characterized in that said method comprises: Provide copyright protection information; receiving a multimedia file, and decoding the multimedia file belonging to the first multimedia data format to obtain decoded multimedia data belonging to the second multimedia data format; using the copyright protection information to generate a digital watermark, and embedding the digital watermark into the decoded multimedia data to obtain multimedia output data; and The multimedia output data is output. 8. The multimedia data copyright protection method as claimed in claim 7, wherein the multimedia file belonging to the first multimedia data format is decoded to obtain the decoded multimedia file belonging to the second multimedia data format The data steps include: performing a decryption operation on the multimedia file to obtain decrypted multimedia data; and Decoding the decrypted multimedia data to obtain the decoded multimedia data in the second multimedia data format. 9. the multimedia data copyright protection method as claimed in claim 8, is characterized in that, described method further comprises: The decrypted multimedia data and the decoded multimedia data are stored. 10. The multimedia data copyright protection method as claimed in claim 7, wherein the multimedia data processing device decodes the multimedia file belonging to the first multimedia data format to obtain the multimedia file belonging to the second multimedia data format For the decoded multimedia data, the copyright protection information includes one of a device identification code associated with the multimedia data processing device, a file identification code associated with the multimedia file, a copyright identification code associated with the multimedia file, or a combination thereof. 11. The multimedia data copyright protection method according to claim 7, wherein the copyright protection information further includes decoding time information generated based on decoding the multimedia file. 12. the multimedia data copyright protection method as claimed in claim 7 is characterized in that, described method further comprises: converting the copyright protection information belonging to the first data format into a bitmap, so as to use the bitmap as the digital watermark.