WO2016037438A1 - 一种数字电视接收装置 - Google Patents
一种数字电视接收装置 Download PDFInfo
- Publication number
- WO2016037438A1 WO2016037438A1 PCT/CN2014/094110 CN2014094110W WO2016037438A1 WO 2016037438 A1 WO2016037438 A1 WO 2016037438A1 CN 2014094110 W CN2014094110 W CN 2014094110W WO 2016037438 A1 WO2016037438 A1 WO 2016037438A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- digital television
- descrambler
- data interface
- radio frequency
- frequency signal
- Prior art date
Links
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
- H04N21/41—Structure of client; Structure of client peripherals
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
Definitions
- the utility model belongs to the field of cable television, and in particular relates to a digital television receiving device.
- ordinary video terminal devices exhibit diversified development, and their main forms are: smart TV, mobile phones, tablets, computers, and the like.
- ordinary video terminal equipment can watch network video, it cannot directly watch digital TV, and it cannot satisfy the user's demand for direct viewing of digital television by ordinary video terminal equipment.
- Ordinary video terminal equipment can only realize the function of playing digital TV by means of a set-top box provided by broadcasting and television.
- the set-top box provided by the broadcasting and television has high cost, complicated internal structure, and some functions are the same as those of the ordinary video terminal device, and the resources of the ordinary video terminal device cannot be fully utilized.
- the utility model provides a digital television receiving device, so that a user can play a digital television on an ordinary video terminal device.
- a digital television receiving device includes a housing and a digital television signal processing device built in the housing, and the digital television signal processing device built in the housing includes:
- a data interface respectively connected to the descrambler and the radio frequency signal receiver, receiving a user play instruction sent by the video terminal device, and transmitting to the radio frequency signal receiver;
- the radio frequency signal receiver is respectively connected with the data interface and the descrambler, receives the digital television signal sent by the digital television broadcasting system and the user play instruction transmitted by the data interface, and tunes and demodulates the digital television signal according to the user play instruction, and outputs the program transmission. flow;
- a smart card connected to the descrambler, providing a control word to the descrambler
- a descrambler respectively connected to the radio frequency signal receiver, the smart card and the data interface, reading a control word in the smart card according to the user play instruction, descrambling the program transmission stream by using the control word, and then passing through the The data interface is transmitted to the video terminal device.
- the digital television signal processing apparatus further includes:
- the encryptor is respectively connected to the descrambler and the data interface, encrypts the unscrambled transport stream, and transmits the encrypted program transport stream to the video terminal device through the data interface.
- the radio frequency signal receiver includes:
- the tuning module and the demodulation module perform tuning and demodulation on the digital television signal, turn the high frequency digital television signal into an intermediate frequency signal, and output a program transmission stream.
- the digital television receiving device provided by the utility model can directly convert the digital television signal to the video terminal device through the data interface, and can play the digital television on the ordinary video terminal device without using the digital television set top box.
- Embodiment 1 is a digital television receiving apparatus according to Embodiment 1 of the present invention.
- Embodiment 2 is a digital television receiving apparatus according to Embodiment 2 of the present invention.
- the digital television receiving device transmits a digital television TS (Transport) transmitted by the digital television broadcasting system Stream, transport stream), parsed into a TS stream that can be played on a normal video terminal device.
- a digital television TS Transport
- FIG. 1 shows the structure of a digital television receiving apparatus according to Embodiment 1 of the present invention. For the convenience of description, only parts related to the embodiments of the present invention are shown.
- the digital television receiving apparatus includes a housing 10 and a radio frequency signal receiver 11, a descrambler 12, a smart card 13, and a data interface 14.
- the data interface 14 can be built in the right end of the housing 10 and connected to the descrambler 12 and the radio frequency signal receiver 11, respectively.
- the data interface 14 receives the user play command sent by the video terminal device and transmits the command to the radio frequency signal receiver 11 via the serial bus.
- the RF signal receiver 11 can be built in the left end of the housing 10 and connected to the descrambler 12.
- the radio frequency receiver 11 and the descrambler 12 are connected to transmit a user play command transmitted from the data interface 14 to the video terminal device to the descrambler 12.
- the radio frequency signal receiver 11 processes the digital television signal transmitted to the radio frequency signal receiver 11 via the cable according to a user playback command.
- the radio frequency signal receiver 11 tunes and demodulates the digital television signal, and according to the received user play control command, locks the frequency point output TS stream, and encrypts the signal.
- the TS stream is transmitted to the descrambler 12 for descrambling, and then the TS stream is transmitted to the video terminal device through the data interface 14.
- the radio frequency signal receiver 11 includes a tuning module and a demodulation module, and performs tuning and demodulation on the received digital television signal to convert the high frequency signal into an intermediate frequency signal.
- the radio frequency signal receiver 11 locks the specified frequency point, and filters it into a TS stream containing only information such as audio and video data of the user-specified frequency point, and transmits it to the descrambler. 12 in.
- the descrambler 12 is connected to the smart card 13 and the data interface 14, respectively.
- the descrambler 12 descrambles the encrypted single-frequency point TS stream.
- the descrambler 12 reads the control word in the smart card (for the mobile digital television decryption card) 13 and then decrypts/descrambles the encrypted TS stream into the data interface 14 via the read control word.
- the smart card 13 is coupled to the descrambler 12 to provide a control word to the descrambler.
- the smart card 13 can be a multi-function mobile digital television decryption card capable of decrypting multi-frequency digital signals.
- the data interface 14 transmits the user play command sent by the smart terminal to the radio frequency signal receiver 11 through the I2C serial bus interface, and transmits the descrambled single-frequency point transport stream to the video terminal device through the data interface 14
- the program of digital TV is played.
- the data interface may be a USB interface.
- the video terminal device may be a smart TV.
- the video terminal device may also be a computer, a tablet, or a mobile phone.
- FIG. 2 shows the structure of a digital television receiving apparatus according to Embodiment 2 of the present invention.
- the difference between this embodiment and the structure of the first embodiment is:
- An encryptor 15 is connected between the descrambler 12 and the data interface 14. Since the transport stream processed by the radio frequency signal receiver 11 has a transparent stream (i.e., a transport stream that is not scrambled), and a scrambled transport stream. When the TS stream passing through the descrambler 12 is a transparent stream, the descrambler 12 does not need to descramble the transparent stream for direct output. In order to prevent theft or interference with the transparent stream, the transparent stream can be encrypted by the encryptor 15 and transmitted to the USB device.
- the encryptor 15 encrypts the transparent stream by using an encryption method of AES or DES.
- the digital television receiving device provided by the utility model can directly convert the digital television signal to the video terminal device through the data interface, and can play the digital television on the video terminal device without using the digital television set top box.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
本实用新型适用于有线电视领域，提供了一种数字电视接收装置，包括壳体和内置于壳体的数字电视信号处理装置，所述内置于壳体的数字电视信号处理装置包括：数据接口，分别与解扰器和射频信号接收器连接；射频信号接收器，分别与数据接口和解扰器连接；智能卡，与解扰器连接；解扰器，分别与射频信号接收器、智能卡和数据接口连接。本实用新型提供的数字电视接收装置对数字电视信号转换处理，通过数据接口直接与视频终端设备连接，无需使用数字电视机顶盒，就能在视频终端设备上播放数字电视。
Description
本实用新型属于有线电视领域，尤其涉及一种数字电视接收装置。
目前，普通视频终端设备呈现多样化的发展，其主要形式有：智能电视、手机、平板、计算机等。普通视频终端设备虽然能收看网络视频，但是不能直接收看数字电视，更不能满足用户对普通视频终端设备直接收看数字电视的需求。普通视频终端设备只有借助广电提供的机顶盒来实现播放数字电视的功能。
但是，广电提供的机顶盒成本高，内部结构繁杂，且部分功能与普通视频终端设备功能相同，导致不能充分利用普通视频终端设备的资源。
本实用新型提供一种数字电视接收装置，以使用户能够在普通视频终端设备上播放数字电视。
本实用新型是这样实现的，一种数字电视接收装置，包括壳体和内置于壳体的数字电视信号处理装置，所述内置于壳体的数字电视信号处理装置包括：
数据接口，分别与解扰器和射频信号接收器连接，接收视频终端设备发送的用户播放指令，并传输至射频信号接收器；
射频信号接收器，分别与数据接口和解扰器连接，接收数字电视广播系统发送的数字电视信号和数据接口传输的用户播放指令，并根据用户播放指令调谐解调所述数字电视信号，输出节目传输流；
智能卡，与解扰器连接，向解扰器提供控制字；
解扰器，分别与射频信号接收器、智能卡和数据接口连接，根据所述用户播放指令，读取所述智能卡中的控制字，通过所述控制字对节目传输流进行解扰，然后通过所述数据接口传输至所述视频终端设备。
更进一步地，所述数字电视信号处理装置还包括：
加密器，分别与解扰器和数据接口连接，对未加扰的传输流进行加密，将加密后的节目传输流通过所述数据接口传输至所述视频终端设备。
更进一步地，所述射频信号接收器包括：
调谐模块和解调模块，对数字电视信号进行调谐解调，将高频数字电视信号变成中频信号，输出节目传输流。
本实用新型提供的数字电视接收装置对数字电视信号转换处理，通过数据接口直接与视频终端设备连接，无需使用数字电视机顶盒，就能在普通视频终端设备上播放数字电视。
图1是本实用新型实施例一提供的数字电视接收装置；
图2是本实用新型实施例二提供的数字电视接收装置。
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。
本实用新型实施例提供的数字电视接收装置，将数字电视广播系统发送的数字电视TS（Transport
Stream，传输流）流，解析为能够在普通视频终端设备上进行播放的TS流。
以下结合具体实施例对本实用新型的具体实现进行详细描述：
图1示出了本实用新型实施例一提供的数字电视接收装置的结构，为了便于说明，仅示出了与本实用新型实施例相关的部分。
数字电视接收装置包括：壳体10和射频信号接收器11、解扰器12、智能卡13和数据接口14。
数据接口14可内置于壳体10右端，分别与解扰器12和射频信号接收器11连接。
数据接口14接收视频终端设备发送的用户播放指令，并将该指令通过串行总线传输至射频信号接收器11。
射频信号接收器11可内置于壳体10左端，与解扰器12连接。射频接收器11和解扰器12连接，将从数据接口14中接收到视频终端设备发送的用户播放指令传输至解扰器12。射频信号接收器11并根据用户播放指令对经电缆线传输进入射频信号接收器11的数字电视信号进行处理。
在本实用新型实施例中，射频信号接收器11接收高频数字电视信号后，将数字电视信号进行调谐解调，并根据接收的用户播放控制指令，锁定频点输出TS流，并将已加密的TS流传输至解扰器12中进行解扰，再通过数据接口14将TS流传输至视频终端设备上。
在本实用新型实施例中，射频信号接收器11包括调谐模块和解调模块，对接收的数字电视信号，进行调谐解调，将高频信号转换为中频信号。在此过程中，根据用户选择播放列表发送的播放请求，射频信号接收器11锁定指定的频点，过滤为只包含用户指定频点的音频及视频数据等信息的TS流，传输至解扰器12中。
解扰器12，分别与智能卡13和数据接口14连接。其中，解扰器12针对已加密的单频点TS流进行解扰。解扰器12读取智能卡（为移动数字电视解密卡）13中的控制字，然后通过所读取的控制字将已加密的TS流进行解密/解扰传输至数据接口14中。
智能卡13，与解扰器12连接，向解扰器提供控制字。
在本实用新型实施例中，智能卡13可以为多功能移动数字电视解密卡，能够对多频点数字信号进行解密。
数据接口14，通过I2C串行总线接口将智能终端发送的用户播放指令传输至射频信号接收器11中，并将接收解扰后的单频点传输流，通过数据接口14传输至视频终端设备进行数字电视的节目播放。
在本实用新型实施例中，数据接口可以为USB接口。
在本实用新型实施例中，视频终端设备可以为智能电视。
在本是实用新型其他实施例中，视频终端设备还可以为计算机、平板或手机。
图2示出了本实用新型实施例二提供的数字电视接收装置的结构，本实施例与实施例一结构的不同之处在于：
在解扰器12与数据接口14之间连接加密器15。由于经过射频信号接收器11处理后的传输流存在透明流（即没有被加扰的传输流），和被加扰的传输流两种。当经过解扰器12的TS流为透明流时，则解扰器12无需对透明流进行解扰直接输出。为了防止盗用或干扰该透明流，可以通过加密器15对透明流进行加密，传输至USB器。
在本实用新型实施例中，加密器15采用AES或DES的加密方式对透明流进行加密。
本实用新型提供的数字电视接收装置对数字电视信号转换处理，通过数据接口直接与视频终端设备连接，无需使用数字电视机顶盒，就能在视频终端设备上播放数字电视。
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。
Claims (3)
- 一种数字电视接收装置，包括壳体和内置于壳体的数字电视信号处理装置，其特征在于，所述内置于壳体的数字电视信号处理装置包括：数据接口，分别与解扰器和射频信号接收器连接，接收视频终端设备发送的用户播放指令，并传输至射频信号接收器；射频信号接收器，分别与数据接口和解扰器连接，接收数字电视广播系统发送的数字电视信号和数据接口传输的用户播放指令，并根据用户播放指令调谐解调所述数字电视信号，输出节目传输流；智能卡，与解扰器连接，向解扰器提供控制字；解扰器，分别与射频信号接收器、智能卡和数据接口连接，根据所述用户播放指令，读取所述智能卡中的控制字，通过所述控制字对节目传输流进行解扰，然后通过所述数据接口传输至所述视频终端设备。
- 如权利要求1所述的数字电视接收装置，其特征在于，所述数字电视信号处理装置还包括：加密器，分别与解扰器和数据接口连接，对未加扰的传输流进行加密，将加密后的节目传输流通过所述数据接口传输至所述视频终端设备。
- 如权利要求1或2所述的数字电视接收装置，其特征在于，所述射频信号接收器包括：调谐模块和解调模块，对数字电视信号进行调谐解调，将高频数字电视信号变成中频信号，输出节目传输流。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522783.5 | 2014-09-11 | ||
| CN201420522783.5U CN204104073U (zh) | 2014-09-11 | 2014-09-11 | 一种数字电视接收装置 |
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| Publication Number | Publication Date |
|---|---|
| WO2016037438A1 true WO2016037438A1 (zh) | 2016-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2014/094110 WO2016037438A1 (zh) | 2014-09-11 | 2014-12-17 | 一种数字电视接收装置 |
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| Country | Link |
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| CN (1) | CN204104073U (zh) |
| WO (1) | WO2016037438A1 (zh) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007437A (zh) * | 2015-08-03 | 2015-10-28 | 罗建平 | 一种墙装式数字电视模块 |
| CN108055526A (zh) * | 2017-11-15 | 2018-05-18 | 安徽工程大学 | 一种便于维护的数字电视终端设备 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062395A1 (en) * | 2002-09-18 | 2004-04-01 | Fujitsu Limited | Receiver for digital broadcast programs in accordance with receiver profile, and billing method therefor |
| CN101668168A (zh) * | 2009-09-28 | 2010-03-10 | 宇龙计算机通信科技(深圳)有限公司 | 一种移动终端电视节目录制、播放方法及系统 |
| CN102421018A (zh) * | 2011-12-31 | 2012-04-18 | 青岛海信宽带多媒体技术有限公司 | 便携式数字电视机 |
| CN202488620U (zh) * | 2011-05-05 | 2012-10-10 | 海尔集团公司 | 数字电视主机、条件接收模块和数字电视 |
-
2014
- 2014-09-11 CN CN201420522783.5U patent/CN204104073U/zh not_active Expired - Fee Related
- 2014-12-17 WO PCT/CN2014/094110 patent/WO2016037438A1/zh active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062395A1 (en) * | 2002-09-18 | 2004-04-01 | Fujitsu Limited | Receiver for digital broadcast programs in accordance with receiver profile, and billing method therefor |
| CN101668168A (zh) * | 2009-09-28 | 2010-03-10 | 宇龙计算机通信科技(深圳)有限公司 | 一种移动终端电视节目录制、播放方法及系统 |
| CN202488620U (zh) * | 2011-05-05 | 2012-10-10 | 海尔集团公司 | 数字电视主机、条件接收模块和数字电视 |
| CN102421018A (zh) * | 2011-12-31 | 2012-04-18 | 青岛海信宽带多媒体技术有限公司 | 便携式数字电视机 |
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| Publication number | Publication date |
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| CN204104073U (zh) | 2015-01-14 |
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