WO2018023924A1 - 电视播放控制方法及系统 - Google Patents

电视播放控制方法及系统 Download PDF

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Publication number
WO2018023924A1
WO2018023924A1 PCT/CN2016/112260 CN2016112260W WO2018023924A1 WO 2018023924 A1 WO2018023924 A1 WO 2018023924A1 CN 2016112260 W CN2016112260 W CN 2016112260W WO 2018023924 A1 WO2018023924 A1 WO 2018023924A1
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WIPO (PCT)
Prior art keywords
source device
television
hdmi source
hdmi
authentication information
Prior art date
Application number
PCT/CN2016/112260
Other languages
English (en)
French (fr)
Inventor
吴正兵
Original Assignee
深圳Tcl新技术有限公司
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Filing date
Publication date
Application filed by 深圳Tcl新技术有限公司 filed Critical 深圳Tcl新技术有限公司
Publication of WO2018023924A1 publication Critical patent/WO2018023924A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card

Definitions

  • the present invention relates to the field of television technologies, and in particular, to a television broadcast control method and system.
  • TV is an audio and video output device that recognizes and plays many different types of source inputs, such as HDMI (High). Definition Multimedia Interface, high definition multimedia interface) source input, DVI (Digital Visual Interface, digital video interface) source input and VGA (Video Graphics Array, video graphics array) source input, etc.
  • HDMI High. Definition Multimedia Interface, high definition multimedia interface
  • DVI Digital Visual Interface, digital video interface
  • VGA Video Graphics Array, video graphics array
  • the television does not perform any screening on the accessed HDMI source device. If the HDMI device accessed by the television is tampered with by illegal molecules, such as a wooden horse, the sensitive user data stored in the television will be Illegal stealing, resulting in user losses, there is a problem of low TV security.
  • the main object of the present invention is to provide a television broadcast control method and system, aiming at improving the security of a television.
  • the present invention provides a television broadcast control method, and the television broadcast control method includes the following steps:
  • the television When detecting that the HDMI interface accesses the HDMI source device, the television receives the authentication information transmitted by the HDMI source device;
  • the television turns on the HDMI audio and video function to receive and play the audio and video data transmitted by the HDMI source device;
  • the authentication information includes a first device identifier of the HDMI source device, and the step for the television to authenticate the HDMI source device based on the received authentication information includes:
  • the television device compares the received first device identifier with the stored second device identifier of the associated pre-authorized HDMI source device, where the first device identifier is consistent with the second device identifier , the authentication passed;
  • the authentication information includes a first verification code generated by the HDMI source device in real time using a time-based one-time password algorithm, and the television authenticates the HDMI source device based on the received authentication information.
  • the steps include:
  • the television generates a second verification code in real time by using a time-based one-time password algorithm based on the generated association key of the stored pre-authorization HDMI source device, and generates the second verification code and the first received
  • the verification code is compared, wherein when the second verification code is consistent with the first verification code, the authentication is passed.
  • the method before the step of authenticating the HDMI source device by using the received authentication information, the method further includes:
  • the television is time synchronized with the HDMI source device.
  • the method before the step of the television receiving the authentication information transmitted by the HDMI source device, the method further includes:
  • the television recognition is currently located within a preset time period
  • the TV directly turns on the HDMI audio and video function.
  • the present invention further provides a television broadcast control method, where the television broadcast control method includes the following steps:
  • the television When detecting that the HDMI interface accesses the HDMI source device, the television receives the authentication information transmitted by the HDMI source device;
  • the television turns on the HDMI audio and video function to receive and play the audio and video data transmitted by the HDMI source device.
  • the authentication information includes a first device identifier of the HDMI source device
  • the step of the television authenticating the HDMI source device based on the received authentication information includes:
  • the television device compares the received first device identifier with the stored second device identifier of the associated pre-authorized HDMI source device, where the first device identifier is consistent with the second device identifier , the authentication passed.
  • the authentication information includes a first verification code generated by the HDMI source device in real time using a time-based one-time password algorithm, and the television is based on the received authentication information to the HDMI source device.
  • the steps to perform authentication include:
  • the television generates a second verification code in real time by using a time-based one-time password algorithm based on the generated association key of the stored pre-authorization HDMI source device, and generates the second verification code and the first received
  • the verification code is compared, wherein when the second verification code is consistent with the first verification code, the authentication is passed.
  • the method before the step of authenticating the HDMI source device by using the received authentication information, the method further includes:
  • the television is time synchronized with the HDMI source device.
  • the method before the step of the television receiving the authentication information transmitted by the HDMI source device, the method further includes:
  • the television recognition is currently located within a preset time period
  • the TV directly turns on the HDMI audio and video function.
  • the present invention further provides a television broadcast control system, where the television broadcast control system includes:
  • a receiving module configured to receive authentication information transmitted by the HDMI source device when detecting that the HDMI interface accesses the HDMI source device
  • An authentication module configured to authenticate the HDMI source device based on the received authentication information, to determine whether the HDMI source device is a pre-authorized HDMI source device;
  • the HDMI audio and video function of the TV where the television is located is turned on, and the television receives and plays the audio and video data transmitted by the HDMI source device.
  • the authentication information includes a first device identifier of the HDMI source device, and the authentication module is further configured to associate the received first device identifier with the stored pre-authorized HDMI source device.
  • the second device identifier is compared, wherein the authentication is passed when the first device identifier is consistent with the second device identifier.
  • the authentication information includes a first verification code generated by the HDMI source device in real time by using a time-based one-time password algorithm
  • the authentication module is further configured to pre-authorize the HDMI source based on the stored association.
  • Generating a key of the device generating a second verification code in real time by using a time-based one-time password algorithm, and comparing the generated second verification code with the received first verification code, where When the two verification codes are consistent with the first verification code, the authentication is passed.
  • the television broadcast control system further includes:
  • a synchronization module configured to time synchronize the television with the HDMI source device.
  • the receiving module is further configured to: when detecting the HDMI source device, identify whether the current time is within a preset time period; if yes, receive the authentication information transmitted by the HDMI source device; The authentication module directly turns on the HDMI audio and video function of the television.
  • the television broadcast control method and system provided by the present invention authenticates an HDMI source device based on authentication information transmitted by an HDMI source device when the television accesses the HDMI source device, and only recognizes the HDMI source device When pre-authorizing the device, turning on the HDMI audio and video function to receive and play audio and video data transmitted by the HDMI device ensures the "binding" of the TV and HDMI source devices.
  • the HDMI source device is not screened, and the invention can prevent the access of the unauthorized HDMI source device and achieve the purpose of improving the security of the television.
  • FIG. 1 is a schematic flow chart of a first embodiment of a television broadcast control method according to the present invention
  • FIG. 2 is a diagram showing an example of an encoding format of an SPD InfoFrame in a second embodiment of a television broadcast control method according to the present invention
  • FIG. 3 is a Vendor Specific in a third embodiment of a television broadcast control method according to the present invention.
  • FIG. 4 is a schematic diagram of functional modules of a television broadcast control system of the present invention.
  • the present invention provides a television broadcast control method.
  • the television broadcast control method includes:
  • Step S10 when detecting that the HDMI interface accesses the HDMI source device, the television receives the authentication information transmitted by the HDMI source device.
  • the HDMI source device includes a device capable of outputting an HDMI source, such as a set top box, a DVD, and a game machine.
  • an HDMI source such as a set top box, a DVD, and a game machine.
  • the HDMI source device is a set top box
  • the television can only be made
  • the connected set-top box is a pre-authorized set-top box
  • the audio and video data pushed by the receiver's top box when the HDMI audio and video function is turned on.
  • the HDMI source device is preferably a set top box.
  • HDMI source device when the HDMI source device is electrically connected to the television through the HDMI cable, either end of the HDMI source device and the television will recognize the opposite end.
  • switching to the HDMI source input will detect the connected HDMI source device; for example, when the TV has switched to the HDMI source input, the HDMI source device is accessed. The connected HDMI source device will be detected.
  • the data communication between the following television and HDMI source devices is based on HDMI between the two.
  • the TDMS (Transition Minimized Differential Signal) channel is completed.
  • the HDMI source device can establish HDMI when the boot initialization is completed and the TV is detected.
  • the TDMS channel transmits the authentication information to the television, and correspondingly, the television receives the authentication information transmitted by the HDMI source device.
  • Step S20 the television authenticates the HDMI source device based on the received authentication information to determine whether the HDMI source device is a pre-authorized HDMI source device;
  • Step S30 when the authentication is passed, the television turns on the HDMI audio and video function to receive and play the audio and video data transmitted by the HDMI source device.
  • the television Upon receiving the authentication information transmitted by the HDMI source device, the television authenticates the HDMI source device based on the received authentication information to determine whether the HDMI source device that issued the authentication information is a pre-authorized HDMI source device. .
  • the authentication information of the HDMI source device and the authentication of the HDMI source device based on the received authentication information are not specifically limited in the embodiment, and those skilled in the art may select according to actual needs. A suitable authentication scheme.
  • the MAC address of the "bundled" set top box is written in the EEPROM of the TV presented to the user, and the address of the written MAC is set to be unerasable.
  • the set top box transmits its own MAC address as authentication information to the television; after receiving the MAC address transmitted by the set top box, the television compares the received MAC address with the MAC address burned in the EEPROM, if the two are consistent Then, it is confirmed that the set top box is a pre-authorized set top box, and the authentication is passed, otherwise the authentication fails.
  • the same dynamic verification code algorithm is written in the TV presented to the user and the "bundled" set top box.
  • the set-top box uses the dynamic verification code algorithm written in the foregoing to generate a verification code in real time as authentication information to be transmitted to the television; when receiving the verification code transmitted by the set-top box, the television generates the verification code by using the same dynamic verification code algorithm written above.
  • the generated verification code is compared with the verification code transmitted by the set-top box. If the two are consistent, the set-top box is confirmed to be a pre-authorized set-top box, and the authentication is passed, otherwise the authentication fails.
  • the HDMI source device that currently transmits the authentication information is identified as a pre-authorized HDMI source device, and the HDMI audio and video function is enabled at this time to Receive HDMI source device via HDMI
  • the decoding is normally performed.
  • the television may also display a prompt message “The current HDMI source device is an unauthorized HDMI source device” on the screen to prompt the user to use the authorized HDMI source device to ensure that the rights and interests are not lost.
  • the television broadcast control method proposed in this embodiment when the television accesses the HDMI source device, authenticates the HDMI source device based on the authentication information transmitted by the HDMI source device, and only recognizes the HDMI source device as When the device is pre-authorized, the HDMI audio and video function is enabled to receive and play the audio and video data transmitted by the HDMI device, which ensures the “binding” of the TV and HDMI source devices.
  • the HDMI source device is not screened, and the invention can prevent the access of the unauthorized HDMI source device and achieve the purpose of improving the security of the television.
  • the authentication information includes a first device identifier of the HDMI source device
  • step S20 includes:
  • the television device compares the received first device identifier with the stored second device identifier of the associated pre-authorized HDMI source device, where the first device identifier is consistent with the second device identifier , the authentication passed.
  • HDMI source devices will send SPDs.
  • InfoFrame which sends product description information data (refer to HDMI standard CEA-861-E) to TV, SPD
  • the encoding format of InfoFrame is shown in Figure 2. It can be seen that the Vendor Name part includes 8 bytes of data, Product The Description section includes 16 bytes of data, this embodiment will Vendor Name+Product A total of 24 bytes of data is used as the device identification of the HDMI source device, and is used as authentication information for the television to perform an authentication operation.
  • the HDMI source device sends the SPD to the television through the TDMS channel when the television is detected. InfoFrame.
  • the TV After receiving the SPD InfoFrame sent by the HDMI source device, the TV parses the received SPD InfoFrame and extracts the Vendor therein.
  • the Name and Product Description fields (ie the first device ID) will be extracted from the Vendor Name and Product
  • the associated field of the Description field and the local storage pre-authorizes the Vendor Name and Product of the HDMI source device.
  • the Description field ie, the second device identifier
  • the TV storage associated pre-authorizes the Vendor of the second device identifier of the HDMI source device
  • the Name field is "TCL” and the Product Description field is "STB001”, and only the SPD sent by the HDMI source device is received.
  • the Vendor Name field in the InfoFrame is "TCL” and the Product Description field is "STB001”
  • the authentication is passed.
  • This embodiment directly utilizes the Vendor Name and Product in the existing SPD InfoFrame
  • the Description field authenticates the HDMI source device without additional hardware costs.
  • the authentication information includes the HDMI source device adopting a TOTP algorithm (Time-based a first-time password algorithm, a time-based one-time password algorithm, a first verification code generated in real time, and step S20 includes:
  • the television generates a second verification code in real time by using a TOTP algorithm based on the generated association key of the stored pre-authorization HDMI source device, and compares the generated second verification code with the received first verification code. And, when the second verification code is consistent with the first verification code, the authentication is passed.
  • this embodiment proposes another optional authentication scheme based on the first embodiment.
  • the following description is only for the difference. Others may refer to the foregoing embodiments, and details are not described herein again.
  • the HDMI source device passes HDMI.
  • the TDMS channel sends a time-based dynamic verification code to the TV.
  • the verification code generation algorithm can use the TOTP algorithm (refer to RFC6238 for details), and the pre-authorization HDMI source device and the TV both store the same verification code generation key.
  • the TOTP algorithm is a time-based one-time password algorithm. As long as the time of both devices is the same and the generated key is consistent, the same one-time verification code can be calculated, as long as the one-way verification code is displayed to the other party without exposure. Once the key is generated, authentication can be completed. In addition, this verification code changes with time and is effective once, which can effectively prevent the verification code from being illegally intercepted during transmission, and the entire authentication operation is cracked.
  • the current HDMI standard (refer to CEA-861-E for details) specifies a data segment that the device manufacturer can define (or extend) by itself, that is, Vendor Specific. InfoFrame, the encoding format of Vendor Specific InfoFrame is shown in Figure 3.
  • IEEE Registration ID is the manufacturer in IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) unique identifier for registration
  • Vendor Specific Payload is a vendor-definable data segment.
  • This embodiment is in Vendor
  • the Specific Payload part carries a verification code dynamically generated by the HDMI source device and is used as authentication information for the television to perform an authentication operation.
  • the HDMI source device sends Vendor Specific to the television through the TDMS channel when detecting the television. InfoFrame.
  • the TV receives the Vendor Specific InfoFrame parses and extracts Vendor Specific The first verification code generated by the Payload part, which is generated by the HDMI source device based on the pre-stored generation key by the TOTP algorithm; at the same time, the TV adopts the same TOTP algorithm, and the pre-authorization of the HDMI source device based on the local storage is pre-authorized.
  • Generating a key to generate a second verification code and comparing the generated second verification code with the received first verification code. If the two are consistent, the authentication is passed, otherwise the authentication fails.
  • Vendor Specific Payload carrying the first verification code is as follows:
  • Payload Tag 1 byte ; 0xB0 indicates the verification code
  • the present embodiment uses the TOTP algorithm to generate a dynamic verification code for authentication.
  • the time at which the verification code is sent and the time at which the verification code is received must be synchronized. Therefore, in this embodiment, before the step S20, the method further includes:
  • the television is time synchronized with the HDMI source device.
  • the television after the television establishes an electrical connection with the HDMI source device, and before the television performs the authentication operation, the television performs time synchronization with the connected HDMI source device.
  • the HDMI source device when detecting the television, the HDMI source device first sends a Vendor carrying the time synchronization code to the television through the TDMS channel. Specific InfoFrame, for the TV to synchronize its local time according to the time synchronization code; after that, the HDMI source device sends the first verification code generated by the HDMI source device to the television for authentication.
  • the time synchronization code is the same as the first verification code generated by the HDMI source device in real time, and is carried in Vendor Specific. Vendor Specific Payload part of InfoFrame, Vendor Specific with time synchronization code The structure of Payload is defined as follows:
  • Payload Data N bytes; encrypted time data in clear text format, year, month, day, minute, minute, second, eg 2015 01 01 12 59 59 uncompressed BCD code
  • the HDMI source device may be configured to update the first verification code every 30 seconds, and send the current first verification code once every second; correspondingly, the television receives the first verification code each time. Each verification is performed. If no authentication is passed for 30s consecutively, the HDMI source device is considered to be an unauthorized HDMI source device. If one verification passes, the HDMI source device is considered to be a pre-authorized HDMI source device.
  • the security of the television can be further improved by adopting an authentication scheme based on dynamic verification.
  • a fourth embodiment of the television broadcast control method of the present invention is provided.
  • the method further includes:
  • the television Upon receiving the audio and video data sent by the HDMI source device and encrypted by using the preset private key, the television decrypts the received audio and video by using a preset preset public key corresponding to the preset private key. Data for playback.
  • the embodiment further performs an encryption and decryption operation on the transmitted audio and video data on the basis of the foregoing embodiment.
  • the following description is only for the difference. Others may refer to the foregoing embodiments, and details are not described herein again.
  • the HDMI source device encrypts the audio and video data transmitted to the television by using an asymmetric encryption algorithm.
  • the HDMI source device encrypts the audio and video data to be transmitted by using the stored preset private key.
  • the encrypted audio and video data is transmitted to the TV through the TDMS channel.
  • the television may decrypt the received audio and video data by using the stored preset public key corresponding to the preset private key, and after the decryption operation is completed, the decrypted audio and video data may be obtained. Sended to the decoder for decoding playback.
  • the embodiment of the present invention uses the RSA algorithm in the present embodiment.
  • the singularity of the HDMI source device and the computing power of the MPEG source device and the television are used for the actual selection. Encryption and decryption of audio and video data.
  • a fifth embodiment of the television broadcast control method of the present invention is provided.
  • the method before the step S10, the method further includes:
  • the television recognition is currently located within a preset time period
  • the TV directly turns on the HDMI audio and video function.
  • the embodiment further restricts whether the authentication operation is triggered.
  • Others may refer to the foregoing embodiments, and details are not described herein again.
  • the preset time period in which the authentication operation is performed can be written in advance on the television.
  • the television when the HDMI source device is detected, the television first identifies whether it is currently located within a preset time period to determine whether an authentication operation needs to be performed on the connected HDMI source device; Within the time period, it is determined that the authentication operation needs to be performed. At this time, the television receives the authentication information transmitted by the receiving HDMI source device, and starts the authentication operation process. For details, refer to the description of the foregoing embodiment. If it is located outside the preset time period, it is determined that the authentication operation is not required. At this time, the TV directly turns on the HDMI audio and video function to play the audio and video data subsequently transmitted by the HDMI source device, which is convenient for the user to use.
  • the present invention also provides a television broadcast control system for performing the aforementioned television broadcast control method.
  • the television broadcast control system includes:
  • the receiving module 10 is configured to receive the authentication information transmitted by the HDMI source device when detecting that the HDMI interface accesses the HDMI source device;
  • the authentication module 20 is configured to authenticate the HDMI source device based on the received authentication information to determine whether the HDMI source device is a pre-authorized HDMI source device;
  • the HDMI audio and video function of the TV where the television is located is turned on, and the television receives and plays the audio and video data transmitted by the HDMI source device.
  • the HDMI source device includes a device capable of outputting an HDMI source, such as a set top box, a DVD, and a game machine.
  • an HDMI source such as a set top box, a DVD, and a game machine.
  • the television playback control method proposed in this embodiment can be used to enable the setting.
  • the television of the television broadcast control system provided by the embodiment only transmits audio and video data of the top box when the HDMI audio and video function is turned on when the connected set top box is a pre-authorized set top box.
  • the HDMI source device is preferably a set top box.
  • HDMI source device when the HDMI source device is electrically connected to the television through the HDMI cable, either end of the HDMI source device and the television will recognize the opposite end.
  • switching to the HDMI source input will detect the connected HDMI source device; for example, when the TV has switched to the HDMI source input, the HDMI source device is accessed. The connected HDMI source device will be detected.
  • the data communication between the following television and HDMI source devices is based on HDMI between the two.
  • the TDMS (Transition Minimized Differential Signal) channel is completed.
  • the HDMI source device can establish HDMI when the boot initialization is completed and the TV is detected.
  • the TDMS channel transmits the authentication information to the television.
  • the receiving information transmitted by the HDMI source device is received by the receiving module 10 of the television broadcast control system of the television for subsequent processing.
  • the authentication module 20 authenticates the HDMI source device based on the authentication information received by the receiving module 10 to determine an HDMI source that sends the authentication information. Whether the device is a pre-authorized HDMI source device.
  • the authentication information of the HDMI source device and the authentication module 20 for authenticating the HDMI source device based on the received authentication information are not specifically limited in the embodiment, and those skilled in the art may It is actually necessary to choose an appropriate authentication scheme.
  • the MAC address of the "bundled" set top box is written in the EEPROM of the TV presented to the user, and the address of the written MAC is set to be unerasable.
  • the set top box transmits its own MAC address as authentication information to the television; the authentication module 20 compares the received MAC address with the MAC address burned in the EEPROM after the receiving module 10 receives the MAC address transmitted by the set top box. Yes, if the two are consistent, confirm that the set-top box is a pre-authorized set-top box, and the authentication is passed, otherwise the authentication fails.
  • the same dynamic verification code algorithm is written in the TV presented to the user and the "bundled" set top box.
  • the set-top box uses the dynamic verification code algorithm written in the foregoing to generate a verification code in real time as authentication information and transmits it to the television.
  • the receiving module 10 receives the verification code transmitted by the set-top box
  • the authentication module 20 uses the same dynamic of the foregoing writing.
  • the verification code algorithm generates a verification code, and compares the generated verification code with the verification code transmitted by the set-top box. If the two are consistent, the set-top box is confirmed to be a pre-authorized set-top box, and the authentication is passed, otherwise the authentication fails.
  • the authentication module 20 identifies that the HDMI source device that currently transmits the authentication information is a pre-authorized HDMI source device, and at this time, the television of the television where it is located is activated.
  • HDMI audio and video function to enable TV to receive HDMI source device via HDMI
  • the decoding is normally performed.
  • the authentication module 20 recognizes that the HDMI source device that currently transmits the authentication information is an unauthorized HDMI source device, and at this time, turns off the HDMI of the TV where the television is located. Audio and video functions.
  • the authentication module 20 can also display a prompt message that “the current HDMI source device is an unauthorized HDMI source device” on the screen of the television where the user is located, to prompt the user to use the authorized HDMI source device to ensure that the user is authenticated. The equity is not lost.
  • the television broadcast control system proposed in this embodiment authenticates the HDMI source device based on the authentication information transmitted by the HDMI source device when the television accesses the HDMI source device, and only recognizes the HDMI source device as When the device is pre-authorized, the HDMI audio and video function is enabled to receive and play the audio and video data transmitted by the HDMI device, which ensures the “binding” of the TV and HDMI source devices.
  • the HDMI source device is not screened, and the invention can prevent the access of the unauthorized HDMI source device and achieve the purpose of improving the security of the television.
  • the authentication information includes the HDMI letter.
  • the authentication module 20 is further configured to compare the received first device identifier with the stored second device identifier of the associated pre-authorized HDMI source device, where When the first device identifier is consistent with the second device identifier, the authentication is passed.
  • the authentication operation performed by the authentication module 20 is further described in detail on the basis of the foregoing first embodiment. Others may refer to the foregoing first embodiment, and details are not described herein again. .
  • HDMI source devices will send SPDs.
  • InfoFrame which sends product description information data (refer to HDMI standard CEA-861-E) to TV, SPD
  • the encoding format of InfoFrame is shown in Figure 2. It can be seen that the Vendor Name part includes 8 bytes of data, Product The Description section includes 16 bytes of data, this embodiment will Vendor Name+Product A total of 24 bytes of data is used as the device identification of the HDMI source device, and is used as authentication information for the television to perform an authentication operation.
  • the HDMI source device sends the SPD to the television through the TDMS channel when the television is detected.
  • InfoFrame After the receiving module 10 receives the SPD InfoFrame sent by the HDMI source device, the authentication module 20 receives the SPD received by the receiving module 10. InfoFrame parses, extracts the Vendor Name and Product Description fields (ie the first device ID), and then extracts the Vendor The Name and Product Description fields are associated with the TV's local storage. Pre-authorize the Vendor Name and Product of the HDMI source device. The Description field (ie, the second device identifier) is compared separately, and if the Vendor Name and Product Description fields are aligned, the authentication is passed.
  • the Description field ie, the second device identifier
  • the TV storage associated pre-authorizes the Vendor of the second device identifier of the HDMI source device
  • the Name field is "TCL”
  • the Product Description field is "STB001”
  • the authentication module 20 receives the SPD sent by the HDMI source device only at the receiving module 10.
  • the Vendor Name field in the InfoFrame is "TCL”
  • the Product Description field is "STB001”
  • This embodiment directly utilizes the Vendor Name and Product in the existing SPD InfoFrame
  • the Description field authenticates the HDMI source device without additional hardware costs.
  • the authentication information includes the HDMI.
  • the source device uses a TOTP algorithm to generate a first verification code in real time
  • the authentication module 20 is further configured to generate a second verification code in real time by using a TOTP algorithm based on the stored association pre-authorization HDMI source device generation key, and And comparing the generated second verification code with the received first verification code, wherein when the second verification code is consistent with the first verification code, the authentication is passed.
  • this embodiment proposes another optional authentication scheme based on the first embodiment.
  • the following description is only for the difference. Others may refer to the foregoing embodiments, and details are not described herein again.
  • the HDMI source device passes HDMI.
  • the TDMS channel sends a time-based dynamic verification code to the TV.
  • the verification code generation algorithm can use the TOTP algorithm (refer to RFC6238 for details), and the pre-authorization HDMI source device and the TV both store the same verification code generation key.
  • the TOTP algorithm is a time-based one-time password algorithm. As long as the time of both devices is the same and the generated key is consistent, the same one-time verification code can be calculated, as long as the one-way verification code is displayed to the other party without exposure. Once the key is generated, authentication can be completed. In addition, this verification code changes with time and is effective once, which can effectively prevent the verification code from being illegally intercepted during transmission, and the entire authentication operation is cracked.
  • the current HDMI standard (refer to CEA-861-E for details) specifies a data segment that the device manufacturer can define (or extend) by itself, that is, Vendor Specific. InfoFrame, the encoding format of Vendor Specific InfoFrame is shown in Figure 3.
  • IEEE Registration ID is the manufacturer in IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) unique identifier for registration
  • Vendor Specific Payload is a vendor-definable data segment.
  • This embodiment is in Vendor
  • the Specific Payload part carries a verification code dynamically generated by the HDMI source device and is used as authentication information for the television to perform an authentication operation.
  • the HDMI source device sends Vendor Specific to the television through the TDMS channel when detecting the television.
  • InfoFrame The authentication module 20 receives the Vendor Specific sent by the HDMI source device at the receiving module 10. After the InfoFrame, the Vendor Specific InfoFrame received by the receiving module 10 is parsed to extract Vendor Specific.
  • the first verification code generated by the Payload part which is generated by the HDMI source device based on the pre-stored generation key by the TOTP algorithm; at the same time, the authentication module 20 adopts the same TOTP algorithm, based on the associated pre-preparation of the TV local storage.
  • the television broadcast control system further include:
  • a synchronization module configured to time synchronize the television with the HDMI source device.
  • the synchronization module performs time synchronization with the connected HDMI source device.
  • the HDMI source device when detecting the television, the HDMI source device first sends a Vendor carrying the time synchronization code to the television through the TDMS channel. Specific The information frame is used by the synchronization module to synchronize the local time of the television according to the time synchronization code. Afterwards, the HDMI source device sends the first verification code generated by the HDMI source device to the television for authentication.
  • the time synchronization code is the same as the first verification code generated by the HDMI source device in real time, and is carried in Vendor Specific. InfoFrame's Vendor Specific Payload section.
  • the HDMI source device may be configured to update the first verification code every 30 seconds, and send the current first verification code once every second; correspondingly, the authentication module 20 receives the first The verification code is verified once. If the authentication is not passed for 30s, the HDMI source device is considered to be an unauthorized HDMI source device. If one verification passes, the HDMI source device is considered to be a pre-authorized HDMI source device.
  • the security of the television can be further improved by adopting an authentication scheme based on dynamic verification.
  • a fourth embodiment of the television broadcast control system of the present invention is provided, corresponding to the fourth embodiment of the foregoing television broadcast control method.
  • the television broadcast control system further include:
  • a decryption module configured to: when receiving the audio and video data sent by the HDMI source device and using a preset private key, decrypting the received public key by using a preset preset public key corresponding to the preset private key Audio and video data for the television to play.
  • the embodiment further performs an encryption and decryption operation on the transmitted audio and video data on the basis of the foregoing embodiment.
  • the following description is only for the difference. Others may refer to the foregoing embodiments, and details are not described herein again.
  • the HDMI source device encrypts the audio and video data transmitted to the television by using an asymmetric encryption algorithm.
  • the HDMI source device encrypts the audio and video data to be transmitted by using the stored preset private key.
  • the encrypted audio and video data is transmitted to the TV through the TDMS channel.
  • the decryption module can decrypt the received audio and video data by using a preset public key stored in the television corresponding to the preset private key, and after the decryption operation is completed, the decryption module can be used.
  • the TV will send the decrypted audio and video data to the decoder for decoding and playback.
  • the embodiment of the present invention uses the RSA algorithm in the present embodiment.
  • the singularity of the HDMI source device and the computing power of the MPEG source device and the television are used for the actual selection. Encryption and decryption of audio and video data.
  • a fifth embodiment of the television broadcast control system of the present invention is provided, which corresponds to the fifth embodiment of the foregoing television broadcast control method.
  • the receiving module 10 is further used for When detecting the HDMI source device, identifying whether it is currently located within a preset time period; receiving the authentication information transmitted by the HDMI source device; otherwise instructing the authentication module 20 to directly turn on the television HDMI audio and video features.
  • the embodiment further restricts whether the authentication operation is triggered.
  • Others may refer to the foregoing embodiments, and details are not described herein again.
  • the preset time period in which the authentication operation is performed can be written in advance on the television.
  • the receiving module 10 when the HDMI source device is detected, the receiving module 10 first identifies whether it is currently located within a preset time period to determine whether an authentication operation needs to be performed on the connected HDMI source device; Within the time period, it is determined that the authentication operation needs to be performed. At this time, the authentication information transmitted by the connected HDMI source device is received, and the authentication operation flow is started. For details, refer to the description of the foregoing embodiment. If it is located outside the preset time period, it is determined that the authentication operation is not required. At this time, the authentication module 20 is directly activated to turn on the HDMI audio and video function of the TV where it is located, so that the HDMI source device is played on the television where the television is located. Subsequent transmission of audio and video data is convenient for users.

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Abstract

公开了一种电视播放控制方法，所述电视播放控制方法包括以下步骤：在侦测到HDMI接口接入HDMI信源设备时，电视接收所述HDMI信源设备传输的鉴权信息；所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及在鉴权通过时，所述电视开启HDMI音视频功能，以接收并播放所述HDMI信源设备传输的音视频数据。还公开了一种电视播放控制系统。能够提升电视的安全性。

Description

电视播放控制方法及系统
技术领域
本发明涉及电视技术领域，尤其涉及一种电视播放控制方法及系统。
背景技术
众所周知的，电视作为一种音视频输出设备，能够识别并播放多种不同类型的信源输入，例如HDMI（High Definition Multimedia Interface，高清晰度多媒体接口）信源输入、DVI（Digital Visual Interface，数字视频接口）信源输入以及VGA（Video Graphics Array，视频图形阵列）信源输入等。其中，随着HDMI技术的不断革新，1.4版本的HDMI信源设备已经能够实现与电视的双向传输，其既可推送数据至电视，又可从电视拉取数据。
然而，在现有技术中，电视对接入的HDMI信源设备不进行任何的甄别，若电视接入的HDMI设备被非法分子篡改，如植入木马等，电视中储存的敏感用户数据将被非法盗取，造成用户损失，存在电视安全性较低的问题。
发明内容
本发明的主要目的在于提供一种电视播放控制方法及系统，旨在提高电视的安全性。
为实现上述目的，本发明提供一种电视播放控制方法，该电视播放控制方法包括以下步骤：
在侦测到HDMI接口接入HDMI信源设备时，电视接收所述HDMI信源设备传输的鉴权信息；
所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
在鉴权通过时，所述电视开启HDMI音视频功能，以接收并播放所述HDMI信源设备传输的音视频数据；其中，
所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
所述电视将接收的所述第一设备标识，与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过；
所述鉴权信息包括所述HDMI信源设备采用基于时间的一次性密码算法实时生成的第一验证码，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
所述电视基于存储的关联预授权HDMI信源设备的生成密钥，采用基于时间的一次性密码算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
可选地，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤之前，还包括：
所述电视与所述HDMI信源设备进行时间同步。
可选地，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
否则所述电视直接开启HDMI音视频功能。
此外，为实现上述目的，本发明还提供一种电视播放控制方法，该电视播放控制方法包括以下步骤：
在侦测到HDMI接口接入HDMI信源设备时，电视接收所述HDMI信源设备传输的鉴权信息；
所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
在鉴权通过时，所述电视开启HDMI音视频功能，以接收并播放所述HDMI信源设备传输的音视频数据。
可选地，所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
所述电视将接收的所述第一设备标识，与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过。
可选地，所述鉴权信息包括所述HDMI信源设备采用基于时间的一次性密码算法实时生成的第一验证码，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
所述电视基于存储的关联预授权HDMI信源设备的生成密钥，采用基于时间的一次性密码算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
可选地，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤之前，还包括：
所述电视与所述HDMI信源设备进行时间同步。
可选地，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
否则所述电视直接开启HDMI音视频功能。
此外，为实现上述目的，本发明还提供一种电视播放控制系统，该电视播放控制系统包括：
接收模块，用于在侦测到HDMI接口接入HDMI信源设备时，接收所述HDMI信源设备传输的鉴权信息；
鉴权模块，用于基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
在鉴权通过时，开启其所在电视的HDMI音视频功能，供所述电视接收并播放所述HDMI信源设备传输的音视频数据。
可选地，所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述鉴权模块还用于将接收的所述第一设备标识与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过。
可选地，所述鉴权信息包括所述HDMI信源设备采用基于时间的一次性密码算法实时生成的第一验证码，所述鉴权模块还用于，基于存储的关联预授权HDMI信源设备的生成密钥，采用基于时间的一次性密码算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
可选地，所述电视播放控制系统，还包括：
同步模块，用于将所述电视与所述HDMI信源设备进行时间同步。
可选地，所述接收模块还用于，在侦测到HDMI信源设备时，识别当前是否位于预设时间段内；是则接收所述HDMI信源设备传输的鉴权信息；否则指示所述鉴权模块直接开启所述电视的HDMI音视频功能。
本发明提出的电视播放控制方法及系统，通过在电视接入HDMI信源设备时，基于HDMI信源设备传输的鉴权信息对HDMI信源设备进行鉴权，并且仅在识别到HDMI信源设备为预授权设备时，开启HDMI音视频功能，以接收并播放HDMI设备传输的音视频数据，能够确保电视和HDMI信源设备的“绑定”使用。相较于现有技术不对接入的HDMI信源设备做任何甄别，本发明能够防止非授权HDMI信源设备的接入，达到提升电视安全性的目的。
附图说明
图1为本发明电视播放控制方法第一实施例的流程示意图；
图2为本发明电视播放控制方法第二实施例中SPD InfoFrame的编码格式示例图；
图3为本发明电视播放控制方法第三实施例中Vendor Specific InfoFrame的编码格式示例图；
图4为本发明电视播放控制系统的功能模块示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种电视播放控制方法，参照图1，在本发明电视播放控制方法的第一实施例中，该电视播放控制方法包括：
步骤S10，在侦测到HDMI接口接入HDMI信源设备时，电视接收所述HDMI信源设备传输的鉴权信息；
其中，HDMI信源设备包括机顶盒、DVD以及游戏机等能够输出HDMI信源的设备，例如，当HDMI信源设备为机顶盒时，通过应用本实施例提出的电视播放控制方法，能够使得电视仅在接入的机顶盒为预授权机顶盒时，开启HDMI音视频功能时，接收机顶盒推送的音视频数据。本发明中，HDMI信源设备优选为机顶盒。
此外，有线电视运营商和网络视频运营商均在大力推广高清机顶盒或是4K机顶盒，相应的，用户家里可能因电视老旧需要更换，或者需要增添新电视，才能和机顶盒配套使用。然而这将增加用户的使用成本，给运营商的业务推广带来困难，为此，运营商通常会将电视成本打包到业务套餐里面，采取卖业务送电视的方式进行业务推广。但是，将电视免费（或低价）送给用户后，用户可能停止使用该运营商的电视内容服务，转而接入其他视频盒子设备，比如换其他运营商的机顶盒，或是接入其他多媒体娱乐设备等。这样既给运营商利益造成了伤害，同时，也可能因为随意接入其他设备而带来电视安全问题，运营商并不希望出现这种情况，而是希望将送出的电视机与自家机顶盒进行绑定使用，使得电视机只能接受绑定机顶盒输出的信号。在此场景下，通过应用本实施例提出的电视播放控制方法，不仅能够确保用户利益不受损失以及电视安全，还能够确保运营商利益不受损失，实现双赢。
本领域技术人员可以理解的是，在将HDMI信源设备与电视通过HDMI连接线建立电连接时，HDMI信源设备和电视中的任一端均将识别到对端。例如，电视已接入HDMI信源设备时切换到HDMI信源输入，将侦测到已接入的HDMI信源设备；又例如，电视已切换到HDMI信源输入时接入HDMI信源设备，将侦测到接入的HDMI信源设备。
需要说明的是，在本实施例中，下述电视和HDMI信源设备之间的数据通信均是基于二者之间的HDMI TDMS（Transition Minimized Differential Signal，最小化传输差分信号）通道完成。
具体的，HDMI信源设备在完成开机初始化并侦测到电视时，即可建立HDMI TDMS通道将鉴权信息传输至电视，相应的，电视接收HDMI信源设备传输的鉴权信息。
步骤S20，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；
步骤S30，在鉴权通过时，所述电视开启HDMI音视频功能，以接收并播放所述HDMI信源设备传输的音视频数据。
在接收到HDMI信源设备传输的鉴权信息时，电视基于接收到的鉴权信息对HDMI信源设备进行鉴权，以确定发出鉴权信息的HDMI信源设备是否为预授权HDMI信源设备。其中，HDMI信源设备发出何种鉴权信息以及电视如何基于接收到的鉴权信息对HDMI信源设备进行鉴权，在本实施例中不做具体限定，本领域技术人员可根据实际需要选择合适的鉴权方案。
例如，运营商在捆绑推广业务时，在赠送给用户的电视的EEPROM中写入“捆绑”的机顶盒的MAC地址，并设置该写入的MAC的地址不可擦除。在使用时，机顶盒将自身MAC地址作为鉴权信息传输至电视；电视在接收到机顶盒传输的MAC地址之后，将接收的MAC地址与烧录在EEPROM中的MAC地址进行比对，若二者一致则确认机顶盒为预授权机顶盒，鉴权通过，否则鉴权失败。
又例如，运营商在捆绑推广业务时，在赠送给用户的电视以及“捆绑”的机顶盒中写入同一动态验证码算法。在使用时，机顶盒采用前述写入的动态验证码算法实时生成验证码作为鉴权信息传输至电视；电视在接收到机顶盒传输的验证码时，采用前述写入的同一动态验证码算法生成验证码，将生成的验证码与机顶盒传输的验证码进行比对，若二者一致则确认机顶盒为预授权机顶盒，鉴权通过，否则鉴权失败。
在本发明实施例中，电视在完成鉴权操作，且鉴权通过时，识别到当前传输鉴权信息的HDMI信源设备为预授权HDMI信源设备，此时开启HDMI音视频功能，以在接收到HDMI信源设备通过HDMI TDMS通道传输的音视频数据时，正常进行解码播放。
在其他实施例中，若在完成鉴权操作且鉴权失败时，电视识别到当前传输鉴权信息的HDMI信源设备为非授权HDMI信源设备，此时关闭HDMI音视频功能。可选地，电视同时还可在屏幕上显示“当前HDMI信源设备为非授权HDMI信源设备”的提示信息，以提示用户使用授权的HDMI信源设备，确保自身权益不受损失。
本实施例提出的电视播放控制方法，通过在电视接入HDMI信源设备时，基于HDMI信源设备传输的鉴权信息对HDMI信源设备进行鉴权，并且仅在识别到HDMI信源设备为预授权设备时，开启HDMI音视频功能，以接收并播放HDMI设备传输的音视频数据，能够确保电视和HDMI信源设备的“绑定”使用。相较于现有技术不对接入的HDMI信源设备做任何甄别，本发明能够防止非授权HDMI信源设备的接入，达到提升电视安全性的目的。
进一步地，基于第一实施例，提出本发明电视播放控制方法的第二实施例，在本实施例中，所述鉴权信息包括所述HDMI信源设备的第一设备标识，步骤S20包括：
所述电视将接收的所述第一设备标识，与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过。
需要说明的是，本实施例在前述第一实施例的基础上，对电视执行的鉴权操作作进一步地的细化说明，其他可参照前述第一实施例，此处不再赘述。
具体的，根据现行的HDMI标准，HDMI信源设备会发送SPD InfoFrame，即发送产品描述信息数据(具体可参考HDMI标准CEA-861-E)至电视，SPD InfoFrame的编码格式如图2所示。可以看出，Vendor Name部分包括8个字节的数据，Product Description部分包括16个字节的数据，本实施例将Vendor Name+Product Description共24个字节的数据作为HDMI信源设备的设备标识，用作供电视执行鉴权操作的鉴权信息。
在本实施例中，HDMI信源设备在侦测到电视时，通过TDMS通道向电视发送SPD InfoFrame。电视在接收到HDMI信源设备发送的SPD InfoFrame之后，对接收的SPD InfoFrame进行解析，提取出其中的Vendor Name和Product Description字段（即第一设备标识），将提取出的Vendor Name和Product Description字段与本地存储的关联预授权HDMI信源设备的Vendor Name和Product Description字段（即第二设备标识）分别进行比对，若Vendor Name和Product Description字段均比对一致则鉴权通过。
例如，电视存储的关联预授权HDMI信源设备的第二设备标识的Vendor Name字段为“TCL”，Product Description字段为“STB001”，则在且仅在接收到HDMI信源设备发送的SPD InfoFrame中的Vendor Name字段为“TCL”，Product Description字段为“STB001”时，鉴权通过。
本实施例通过直接利用现有SPD InfoFrame中的Vendor Name和Product Description字段对HDMI信源设备进行鉴权，不会带来额外的硬件成本。
进一步地，基于第一实施例，提出本发明电视播放控制方法的第三实施例，在本实施例中，所述鉴权信息包括所述HDMI信源设备采用TOTP算法（Time-based One-time Password Algorithm，基于时间的一次性密码算法）实时生成的第一验证码，步骤S20包括：
所述电视基于存储的关联预授权HDMI信源设备的生成密钥，采用TOTP算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
需要说明的是，本实施例在第一实施例的基础上，提出另一种可选的鉴权方案。以下仅针对该区别进行说明，其他可参照前述实施例，此处不再赘述。
在本实施例中，HDMI信源设备通过HDMI TDMS通道向电视发送基于时间的动态验证码，验证码生成算法可采用TOTP算法（具体可参考RFC6238），预授权HDMI信源设备与电视都储存有相同的验证码生成密钥。其中，TOTP算法是基于时间的一次性密码算法，只要双方设备的时间一致，生成密钥一致，就可以算出相同的一次性验证码，只要一方向另一方展示这个一次性验证码，而无需暴露生成密钥，就可以完成鉴权。另外，这个验证码随时间变化，一次有效，能有效防止验证码在传输过程中被非法截取而导致整个鉴权操作被破解。
具体的，现行HDMI标准（具体可参考CEA-861-E）规定了设备厂家可以自行定义（或扩展）的数据段，即Vendor Specific InfoFrame，Vendor Specific InfoFrame的编码格式如图3所示。其中，IEEE Registration ID为厂商在IEEE（Institute of Electrical and Electronics Engineers，电气和电子工程师协会）注册的唯一标识，Vendor Specific Payload即为厂商可自行定义的数据段。本实施例在Vendor Specific Payload部分携带HDMI信源设备动态生成的验证码，用作供电视执行鉴权操作的鉴权信息。
在本实施例中，HDMI信源设备在侦测到电视时，通过TDMS通道向电视发送Vendor Specific InfoFrame。电视在接收到HDMI信源设备发送的Vendor Specific InfoFrame之后，对接收的Vendor Specific InfoFrame进行解析，提取出Vendor Specific Payload部分携带的，由该HDMI信源设备采用TOTP算法基于其预存的生成密钥所生成的第一验证码；同时，电视采用相同的TOTP算法，基于本地存储的关联预授权HDMI信源设备的生成密钥生成第二验证码，并将生成的第二验证码与接收的第一验证码进行比对，若二者一致，则鉴权通过，否则鉴权失败。
其中，携带第一验证码的Vendor Specific Payload的结构定义如下所示：
Vendor Specific Payload
{
Payload Tag 1 byte ；0xB0表示验证码
Payload Data N bytes ；加密的验证码数据，明文为非压缩BCD码，通常为6位
}
进一步地，由于本实施例采用TOTP算法生成用于鉴权的动态验证码，需要验证码发送端的时间与验证码接收端的时间必须同步，因此，在本实施例中，步骤S20之前，还包括：
所述电视与所述HDMI信源设备进行时间同步。
在本实施例中，当电视与HDMI信源设备建立电连接之后，且在电视执行鉴权操作之前，电视与连接的HDMI信源设备进行时间同步。
具体的，HDMI信源设备在侦测到电视时，首先通过TDMS通道向电视发送携带时间同步码的Vendor Specific InfoFrame，供电视根据时间同步码同步其本地时间；之后，HDMI信源设备再向电视发送携带其实时生成的第一验证码，供电视进行鉴权。
其中，时间同步码与HDMI信源设备实时生成的第一验证码一样，携带在Vendor Specific InfoFrame的Vendor Specific Payload部分，携带时间同步码的Vendor Specific Payload的结构定义如下所示：
Vendor Specific Payload
{
Payload Tag 1 byte ；0xA0表示时间同步码
Payload Data N bytes ；加密的时间数据，明文格式为年月日时分秒， 如2015 01 01 12 59 59非压缩BCD码
}
可选地，在具体实施时，可以设置HDMI信源设备每30秒更新第一验证码，并每秒发送一次当前的第一验证码；相应的，电视在每次接收到第一验证码时都进行一次验证，如果连续30s都没有验证通过，则认为HDMI信源设备是非授权HDMI信源设备，如果有一次验证通过，则认为HDMI信源设备是预授权HDMI信源设备。
本实施例通过采用基于动态验证的鉴权方案，能够进一步提升电视的安全性。
进一步地，基于前述任一实施例，提出本发明电视播放控制方法的第四实施例，在本实施例中，步骤S30之后，步骤S30之后，还包括：
在接收到所述HDMI信源设备发送的，且采用预设私钥加密的音视频数据时，所述电视采用储存的对应所述预设私钥的预设公钥解密接收的所述音视频数据，以供播放。
需要说明的是，为进一步提升电视的安全性，本实施例在前述实施例的基础上，还对传输的音视频数据进行加解密操作。以下仅针对该区别进行说明，其他可参照前述实施例，此处不再赘述。
在本实施例中，HDMI信源设备对传输至电视的音视频数据采用非对称加密算法进行加密，可选地，HDMI信源设备使用储存的预设私钥对待传输的音视频数据进行加密，并将加密后的音视频数据通过TDMS通道传输至电视。电视在接收到加密的音视频数据时，采用储存的对应前述预设私钥的预设公钥即可解密接收的所述音视频数据，在完成解密操作后，即可将解密后音视频数据送入解码器进行解码播放。
其中，采用何种非对称加密算法可由本领域技术人员根据“绑定”使用的HDMI信源设备和电视的计算能力进行实际选取，本实施例不做具体限制，例如，本实施例采用RSA算法进行音视频数据的加解密。
进一步地，基于前述任一实施例，提出本发明电视播放控制方法的第五实施例，在本实施例中，步骤S10之前，还包括：
在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
是则转入执行步骤S10；
否则所述电视直接开启HDMI音视频功能 。
需要说明的是，针对前述绑定推广电视和机顶盒的使用场景，本实施例进一步对是否触发鉴权操作进行限制，其他可参照前述实施例，此处不再赘述。
以机顶盒为例，运营商在推广业务时，往往希望用户在合约期内，限制免费（或低价）给予用户的电视只能连接播放自家机顶盒。相应的，可以预先在电视写入执行鉴权操作的预设时间段。
在本实施例中，在侦测到HDMI信源设备时，所述电视首先识别当前是否位于预设时间段内，以确定是否需要对连接的HDMI信源设备进行鉴权操作；若当前位于预设时间段之内，则确定需要进行鉴权操作，此时电视接收连接的接收HDMI信源设备所传输的鉴权信息，开始鉴权操作流程，具体可参照前述实施例的描述，此处不再赘述；若当前位于预设时间段之外，则确定不需要进行鉴权操作，此时电视直接开启HDMI音视频功能，以播放HDMI信源设备后续传输的音视频数据，方便用户使用。
本发明还提供一种执行前述电视播放控制方法的电视播放控制系统，参照图4，对应于前述电视播放控制方法的第一实施例，在本发明电视播放控制系统的第一实施例中，所述电视播放控制系统包括：
接收模块10，用于在侦测到HDMI接口接入HDMI信源设备时，接收所述HDMI信源设备传输的鉴权信息；
鉴权模块20，用于基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
在鉴权通过时，开启其所在电视的HDMI音视频功能，供所述电视接收并播放所述HDMI信源设备传输的音视频数据。
其中，HDMI信源设备包括机顶盒、DVD以及游戏机等能够输出HDMI信源的设备，例如，当HDMI信源设备为机顶盒时，通过应用本实施例提出的电视播放控制方法，能够使得设置有本实施例提供的电视播放控制系统的电视仅在接入的机顶盒为预授权机顶盒时，开启HDMI音视频功能时，接收机顶盒推送的音视频数据。本发明中，HDMI信源设备优选为机顶盒。
本领域技术人员可以理解的是，在将HDMI信源设备与电视通过HDMI连接线建立电连接时，HDMI信源设备和电视中的任一端均将识别到对端。例如，电视已接入HDMI信源设备时切换到HDMI信源输入，将侦测到已接入的HDMI信源设备；又例如，电视已切换到HDMI信源输入时接入HDMI信源设备，将侦测到接入的HDMI信源设备。
需要说明的是，在本实施例中，下述电视和HDMI信源设备之间的数据通信均是基于二者之间的HDMI TDMS（Transition Minimized Differential Signal，最小化传输差分信号）通道完成。
具体的，HDMI信源设备在完成开机初始化并侦测到电视时，即可建立HDMI TDMS通道将鉴权信息传输至电视，相应的，由设置在电视的电视播放控制系统的接收模块10接收HDMI信源设备传输的鉴权信息，以进行后续处理。
在接收模块10接收到HDMI信源设备传输的鉴权信息时，鉴权模块20基于接收模块10接收到的鉴权信息对HDMI信源设备进行鉴权，以确定发出鉴权信息的HDMI信源设备是否为预授权HDMI信源设备。其中，HDMI信源设备发出何种鉴权信息以及鉴权模块20如何基于接收到的鉴权信息对HDMI信源设备进行鉴权，在本实施例中不做具体限定，本领域技术人员可根据实际需要选择合适的鉴权方案。
例如，运营商在捆绑推广业务时，在赠送给用户的电视的EEPROM中写入“捆绑”的机顶盒的MAC地址，并设置该写入的MAC的地址不可擦除。在使用时，机顶盒将自身MAC地址作为鉴权信息传输至电视；鉴权模块20在接收模块10接收到机顶盒传输的MAC地址之后，将接收的MAC地址与烧录在EEPROM中的MAC地址进行比对，若二者一致则确认机顶盒为预授权机顶盒，鉴权通过，否则鉴权失败。
又例如，运营商在捆绑推广业务时，在赠送给用户的电视以及“捆绑”的机顶盒中写入同一动态验证码算法。在使用时，机顶盒采用前述写入的动态验证码算法实时生成验证码作为鉴权信息传输至电视；鉴权模块20在接收模块10接收到机顶盒传输的验证码时，采用前述写入的同一动态验证码算法生成验证码，将生成的验证码与机顶盒传输的验证码进行比对，若二者一致则确认机顶盒为预授权机顶盒，鉴权通过，否则鉴权失败。
在本发明实施例中，在完成鉴权操作，且鉴权通过时，鉴权模块20识别到当前传输鉴权信息的HDMI信源设备为预授权HDMI信源设备，此时开启其所在电视的HDMI音视频功能，以使得电视能够在接收到HDMI信源设备通过HDMI TDMS通道传输的音视频数据时，正常进行解码播放。
在其他实施例中，若在完成鉴权操作且鉴权失败时，鉴权模块20识别到当前传输鉴权信息的HDMI信源设备为非授权HDMI信源设备，此时关闭其所在电视的HDMI音视频功能。可选地，鉴权模块20还可同时在其所在电视的屏幕上显示“当前HDMI信源设备为非授权HDMI信源设备”的提示信息，以提示用户使用授权的HDMI信源设备，确保自身权益不受损失。
本实施例提出的电视播放控制系统，通过在电视接入HDMI信源设备时，基于HDMI信源设备传输的鉴权信息对HDMI信源设备进行鉴权，并且仅在识别到HDMI信源设备为预授权设备时，开启HDMI音视频功能，以接收并播放HDMI设备传输的音视频数据，能够确保电视和HDMI信源设备的“绑定”使用。相较于现有技术不对接入的HDMI信源设备做任何甄别，本发明能够防止非授权HDMI信源设备的接入，达到提升电视安全性的目的。
进一步地，基于第一实施例，提出本发明电视播放控制系统的第二实施例，对应于前述播放控制方法的第二实施例，在本实施例中，所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述鉴权模块20还用于将接收的所述第一设备标识与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过。
需要说明的是，本实施例在前述第一实施例的基础上，对鉴权模块20执行的鉴权操作作进一步地的细化说明，其他可参照前述第一实施例，此处不再赘述。
具体的，根据现行的HDMI标准，HDMI信源设备会发送SPD InfoFrame，即发送产品描述信息数据(具体可参考HDMI标准CEA-861-E)至电视，SPD InfoFrame的编码格式如图2所示。可以看出，Vendor Name部分包括8个字节的数据，Product Description部分包括16个字节的数据，本实施例将Vendor Name+Product Description共24个字节的数据作为HDMI信源设备的设备标识，用作供电视执行鉴权操作的鉴权信息。
在本实施例中，HDMI信源设备在侦测到电视时，通过TDMS通道向电视发送SPD InfoFrame。鉴权模块20在接收模块10接收到HDMI信源设备发送的SPD InfoFrame之后，对接收模块10接收的SPD InfoFrame进行解析，提取出其中的Vendor Name和Product Description字段（即第一设备标识），然后将提取出的Vendor Name和Product Description字段与其所在电视本地存储的关联预授权HDMI信源设备的Vendor Name和Product Description字段（即第二设备标识）分别进行比对，若Vendor Name和Product Description字段均比对一致则鉴权通过。
例如，电视存储的关联预授权HDMI信源设备的第二设备标识的Vendor Name字段为“TCL”，Product Description字段为“STB001”，则鉴权模块20在且仅在接收模块10接收到HDMI信源设备发送的SPD InfoFrame中的Vendor Name字段为“TCL”，Product Description字段为“STB001”时，鉴权通过。
本实施例通过直接利用现有SPD InfoFrame中的Vendor Name和Product Description字段对HDMI信源设备进行鉴权，不会带来额外的硬件成本。
进一步地，基于第一实施例，提出本发明电视播放控制系统的第三实施例，对应于前述电视播放控制方法的第三实施例，在本实施例中，所述鉴权信息包括所述HDMI信源设备采用TOTP算法实时生成的第一验证码，所述鉴权模块20还用于，基于存储的关联预授权HDMI信源设备的生成密钥，采用TOTP算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
需要说明的是，本实施例在第一实施例的基础上，提出另一种可选的鉴权方案。以下仅针对该区别进行说明，其他可参照前述实施例，此处不再赘述。
在本实施例中，HDMI信源设备通过HDMI TDMS通道向电视发送基于时间的动态验证码，验证码生成算法可采用TOTP算法（具体可参考RFC6238），预授权HDMI信源设备与电视都储存有相同的验证码生成密钥。其中，TOTP算法是基于时间的一次性密码算法，只要双方设备的时间一致，生成密钥一致，就可以算出相同的一次性验证码，只要一方向另一方展示这个一次性验证码，而无需暴露生成密钥，就可以完成鉴权。另外，这个验证码随时间变化，一次有效，能有效防止验证码在传输过程中被非法截取而导致整个鉴权操作被破解。
具体的，现行HDMI标准（具体可参考CEA-861-E）规定了设备厂家可以自行定义（或扩展）的数据段，即Vendor Specific InfoFrame，Vendor Specific InfoFrame的编码格式如图3所示。其中，IEEE Registration ID为厂商在IEEE（Institute of Electrical and Electronics Engineers，电气和电子工程师协会）注册的唯一标识，Vendor Specific Payload即为厂商可自行定义的数据段。本实施例在Vendor Specific Payload部分携带HDMI信源设备动态生成的验证码，用作供电视执行鉴权操作的鉴权信息。
在本实施例中，HDMI信源设备在侦测到电视时，通过TDMS通道向电视发送Vendor Specific InfoFrame。鉴权模块20在接收模块10接收到HDMI信源设备发送的Vendor Specific InfoFrame之后，对接收模块10接收的Vendor Specific InfoFrame进行解析，提取出Vendor Specific Payload部分携带的，由该HDMI信源设备采用TOTP算法基于其预存的生成密钥所生成的第一验证码；同时，鉴权模块20采用相同的TOTP算法，基于其所在电视本地存储的关联预授权HDMI信源设备的生成密钥生成第二验证码，并将生成的第二验证码与接收的第一验证码进行比对，若二者一致，则鉴权通过，否则鉴权失败。
进一步地，由于本实施例采用TOTP算法生成用于鉴权的动态验证码，需要验证码发送端的时间与验证码接收端的时间必须同步，因此，在本实施例中，所述电视播放控制系统还包括：
同步模块，用于将所述电视与所述HDMI信源设备进行时间同步。
在本实施例中，同步模块当其所在电视与HDMI信源设备建立电连接之后，且在鉴权模块20执行鉴权操作之前，将其所在电视与连接的HDMI信源设备进行时间同步。
具体的，HDMI信源设备在侦测到电视时，首先通过TDMS通道向电视发送携带时间同步码的Vendor Specific InfoFrame，供同步模块根据时间同步码同步其所在电视的本地时间；之后，HDMI信源设备再向电视发送携带其实时生成的第一验证码，供鉴权模块20进行鉴权。
其中，时间同步码与HDMI信源设备实时生成的第一验证码一样，携带在Vendor Specific InfoFrame的Vendor Specific Payload部分。
可选地，在具体实施时，可以设置HDMI信源设备每30秒更新第一验证码，并每秒发送一次当前的第一验证码；相应的，鉴权模块20在每次接收到第一验证码时都进行一次验证，如果连续30s都没有验证通过，则认为HDMI信源设备是非授权HDMI信源设备，如果有一次验证通过，则认为HDMI信源设备是预授权HDMI信源设备。
本实施例通过采用基于动态验证的鉴权方案，能够进一步提升电视的安全性。
进一步地，基于前述任一实施例，提出本发明电视播放控制系统的第四实施例，对应于前述电视播放控制方法的第四实施例，在本实施例中，所述电视播放控制系统，还包括：
解密模块，用于在接收到所述HDMI信源设备发送的，且采用预设私钥加密的音视频数据时，采用储存的对应所述预设私钥的预设公钥解密接收的所述音视频数据，以供所述电视播放。
需要说明的是，为进一步提升电视的安全性，本实施例在前述实施例的基础上，还对传输的音视频数据进行加解密操作。以下仅针对该区别进行说明，其他可参照前述实施例，此处不再赘述。
在本实施例中，HDMI信源设备对传输至电视的音视频数据采用非对称加密算法进行加密，可选地，HDMI信源设备使用储存的预设私钥对待传输的音视频数据进行加密，并将加密后的音视频数据通过TDMS通道传输至电视。在接收到加密的音视频数据时，解密模块采用其所在电视储存的对应前述预设私钥的预设公钥即可解密接收的所述音视频数据，在完成解密操作后，即可供其所在电视将解密后音视频数据送入解码器进行解码播放。
其中，采用何种非对称加密算法可由本领域技术人员根据“绑定”使用的HDMI信源设备和电视的计算能力进行实际选取，本实施例不做具体限制，例如，本实施例采用RSA算法进行音视频数据的加解密。
进一步地，基于前述任一实施例，提出本发明电视播放控制系统的第五实施例，对应于前述电视播放控制方法的第五实施例，在本实施例中，所述接收模块10还用于，在侦测到HDMI信源设备时，识别当前是否位于预设时间段内；是则接收所述HDMI信源设备传输的鉴权信息；否则指示所述鉴权模块20直接开启所述电视的HDMI音视频功能。
需要说明的是，针对前述绑定推广电视和机顶盒的使用场景，本实施例进一步对是否触发鉴权操作进行限制，其他可参照前述实施例，此处不再赘述。
以机顶盒为例，运营商在推广业务时，往往希望用户在合约期内，限制免费（或低价）给予用户的电视只能连接播放自家机顶盒。相应的，可以预先在电视写入执行鉴权操作的预设时间段。
在本实施例中，在侦测到HDMI信源设备时，接收模块10首先识别当前是否位于预设时间段内，以确定是否需要对连接的HDMI信源设备进行鉴权操作；若当前位于预设时间段之内，则确定需要进行鉴权操作，此时开始接收连接的接收HDMI信源设备所传输的鉴权信息，开始鉴权操作流程，具体可参照前述实施例的描述，此处不再赘述；若当前位于预设时间段之外，则确定不需要进行鉴权操作，此时指示鉴权模块20直接开启其所在电视的HDMI音视频功能，以供其所在电视播放HDMI信源设备后续传输的音视频数据，方便用户使用。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术邻域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种电视播放控制方法，其特征在于，所述电视播放控制方法包括以下步骤：
    在侦测到HDMI接口接入HDMI信源设备时，电视接收所述HDMI信源设备传输的鉴权信息；
    所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
    在鉴权通过时，所述电视开启HDMI音视频功能，以接收并播放所述HDMI信源设备传输的音视频数据；其中，
    所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
    所述电视将接收的所述第一设备标识，与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过；
    所述鉴权信息包括所述HDMI信源设备采用基于时间的一次性密码算法实时生成的第一验证码，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
    所述电视基于存储的关联预授权HDMI信源设备的生成密钥，采用基于时间的一次性密码算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
  2. 根据权利要求1所述的电视播放控制方法，其特征在于，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤之前，还包括：
    所述电视与所述HDMI信源设备进行时间同步。
  3. 根据权利要求1所述的电视播放控制方法，其特征在于，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
    在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
    是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
    否则所述电视直接开启HDMI音视频功能。
  4. 根据权利要求2所述的电视播放控制方法，其特征在于，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
    在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
    是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
    否则所述电视直接开启HDMI音视频功能。
  5. 一种电视播放控制方法，其特征在于，所述电视播放控制方法包括以下步骤：
    在侦测到HDMI接口接入HDMI信源设备时，电视接收所述HDMI信源设备传输的鉴权信息；
    所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
    在鉴权通过时，所述电视开启HDMI音视频功能，以接收并播放所述HDMI信源设备传输的音视频数据。
  6. 根据权利要求5所述的电视播放控制方法，其特征在于，所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
    所述电视将接收的所述第一设备标识，与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过。
  7. 根据权利要求5所述的电视播放控制方法，其特征在于，所述鉴权信息包括所述HDMI信源设备采用基于时间的一次性密码算法实时生成的第一验证码，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤包括：
    所述电视基于存储的关联预授权HDMI信源设备的生成密钥，采用基于时间的一次性密码算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
  8. 根据权利要求7所述的电视播放控制方法，其特征在于，所述电视基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权的步骤之前，还包括：
    所述电视与所述HDMI信源设备进行时间同步。
  9. 根据权利要求5所述的电视播放控制方法，其特征在于，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
    在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
    是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
    否则所述电视直接开启HDMI音视频功能。
  10. 根据权利要求6所述的电视播放控制方法，其特征在于，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
    在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
    是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
    否则所述电视直接开启HDMI音视频功能。
  11. 根据权利要求7所述的电视播放控制方法，其特征在于，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
    在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
    是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
    否则所述电视直接开启HDMI音视频功能。
  12. 根据权利要求8所述的电视播放控制方法，其特征在于，所述电视接收所述HDMI信源设备传输的鉴权信息的步骤之前，还包括：
    在侦测到HDMI信源设备时，所述电视识别当前是否位于预设时间段内；
    是则转入执行所述电视接收所述HDMI信源设备传输的鉴权信息的步骤；
    否则所述电视直接开启HDMI音视频功能。
  13. 一种电视播放控制系统，其特征在于，所述电视播放控制系统包括：
    接收模块，用于在侦测到HDMI接口接入HDMI信源设备时，接收所述HDMI信源设备传输的鉴权信息；
    鉴权模块，用于基于接收的所述鉴权信息对所述HDMI信源设备进行鉴权，以确定所述HDMI信源设备是否为预授权HDMI信源设备；以及
    在鉴权通过时，开启其所在电视的HDMI音视频功能，供所述电视接收并播放所述HDMI信源设备传输的音视频数据。
  14. 根据权利要求13所述的电视播放控制系统，其特征在于，所述鉴权信息包括所述HDMI信源设备的第一设备标识，所述鉴权模块还用于将接收的所述第一设备标识与存储的关联预授权HDMI信源设备的第二设备标识进行比对，其中，在所述第一设备标识与所述第二设备标识一致时，鉴权通过。
  15. 根据权利要求13所述的电视播放控制系统，其特征在于，所述鉴权信息包括所述HDMI信源设备采用基于时间的一次性密码算法实时生成的第一验证码，所述鉴权模块还用于，基于存储的关联预授权HDMI信源设备的生成密钥，采用基于时间的一次性密码算法实时生成第二验证码，并将生成的所述第二验证码与接收的所述第一验证码进行比对，其中，在所述第二验证码与所述第一验证码一致时，鉴权通过。
  16. 根据权利要求15所述的电视播放控制系统，其特征在于，所述电视播放控制系统，还包括：
    同步模块，用于将所述电视与所述HDMI信源设备进行时间同步。
  17. 根据权利要求13所述的电视播放控制系统，其特征在于，所述接收模块还用于，在侦测到HDMI信源设备时，识别当前是否位于预设时间段内；是则接收所述HDMI信源设备传输的鉴权信息；否则指示所述鉴权模块直接开启所述电视的HDMI音视频功能。
  18. 根据权利要求14所述的电视播放控制系统，其特征在于，所述接收模块还用于，在侦测到HDMI信源设备时，识别当前是否位于预设时间段内；是则接收所述HDMI信源设备传输的鉴权信息；否则指示所述鉴权模块直接开启所述电视的HDMI音视频功能。
  19. 根据权利要求15所述的电视播放控制系统，其特征在于，所述接收模块还用于，在侦测到HDMI信源设备时，识别当前是否位于预设时间段内；是则接收所述HDMI信源设备传输的鉴权信息；否则指示所述鉴权模块直接开启所述电视的HDMI音视频功能。
  20. 根据权利要求16所述的电视播放控制系统，其特征在于，所述接收模块还用于，在侦测到HDMI信源设备时，识别当前是否位于预设时间段内；是则接收所述HDMI信源设备传输的鉴权信息；否则指示所述鉴权模块直接开启所述电视的HDMI音视频功能。
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