RU139321U1 - TELEVISION DIGITAL STB - Google Patents

Abstract

Digital set-top box, including a tuner and demodulator for receiving and demodulating the European standard for digital terrestrial television broadcasting (DVB-T) and the European standard for second-generation terrestrial digital television broadcasting (DVB-T2) with the ability to decode signals according to MPEG-2 and MPEG-4 standards based on an ultra-large integrated circuit; analog and digital audio and video interfaces, including an interface through which a high-resolution video signal is sent to the output, a front panel with buttons for controlling the functions of the set-top box, designed to receive commands from an infrared remote control; a power module with a power cable and network plug, characterized in that the tuner and demodulator are capable of receiving signals of the European standard for cable digital television broadcasting (DVB-C) and the European standard for second-generation digital terrestrial television broadcasting (DVB-T2) in multi-stream mode .

Description

The utility model relates to the field of television systems with high resolution and can be used for subscriber reception of television programs of digital broadcasting and cable broadcasting.

The closest analogue to the claimed utility model is the digital television set-top box RDB-602, issued by Rolsen based on the super-large integrated circuit (VLSI) MSD7819. The prefix has the functions of signal processing of DVB-T (European standard for digital terrestrial television broadcasting) and DVB-T2 (European standard for second-generation terrestrial digital television broadcasting) with the ability to decode MPEG-2 signal (a group of standards for digital encoding of video and audio signals, organization transport data streams, transmission of related information) and MPEG-4 (a group of standards for digital encoding of video and audio signals). The prefix includes a tuner and a demodulator for receiving and demodulating the European standard for digital terrestrial television broadcasting DVB-T and the European standard for digital terrestrial television broadcasting of the second generation DVB-T2 with the ability to decode signals according to MPEG-2 and MPEG-4 standards based on an ultra-large integrated circuit; analog and digital audio and video interfaces, including an interface through which a high-resolution video signal is sent to the output, a front panel with buttons for controlling the functions of the set-top box, designed to receive commands from an infrared remote control (hereinafter - the remote control); power module with power cable and mains plug.

The main interfaces of the well-known set-top box are the audio and video interfaces: HDMI (high-definition multimedia interface that allows the transmission of high-resolution digital video data and multi-channel digital audio signals); YPbPr (component representation of a video signal as a luminance signal and color difference signals); CVBS (composite video - full analog television color video signal transmitted over one communication line separately from sound); S / PDIF (digital optical or coaxial audio interface developed by Sony and Philips).

The well-known prefix has the basic functionality, namely:

- setting - automatic and manual search for programs;

- software updates;

- editing programs - sorting programs, renaming programs, deleting programs;

- Putting programs on the favorites list;

- switching programs;

- adjustment of sound volume;

- permission setting;

- recording and playback of data via the USB interface (interface for serial data transmission for medium-speed and low-speed peripheral devices in computer technology).

A disadvantage of the known device is the lack of the ability to receive programs of the European standard cable digital television broadcasting (hereinafter referred to as the DVB-C standard), which is currently widespread in cities in the Russian Federation, as well as the lack of the ability to receive programs of the DVB-T2 standard in multi-stream mode transmission (hereinafter referred to as Multi PLP).

The technical result consists in the possibility of receiving cable digital television broadcasting of the DVB-C standard along with the standards of terrestrial television broadcasting DVB-T, DVB-T2, as well as in the introduction of the function of receiving television programs of the DVB-T2 standard in multi-stream transmission mode Multi PLP.

The technical result is achieved in that in a digital television set-top box, including a tuner and a demodulator for receiving and demodulating the European standard for digital terrestrial television broadcasting DVB-T and the European standard for second-generation digital terrestrial television broadcasting DVB-T2 with the ability to decode signals according to MPEG-2 and MPEG-4 based on an ultra-large integrated circuit; analog and digital audio and video interfaces, including an interface through which a high-resolution video signal is sent to the output, a front panel with buttons for controlling the functions of the set-top box, designed to receive commands from an infrared remote control; a power module with a power cable and a network plug, according to a utility model, a tuner and a demodulator are configured to receive signals of the European standard for cable digital television broadcasting DVB-C and European standard for broadcast digital television broadcasting of the second generation DVB-T2 in multi-stream mode.

Figure 1 presents an example implementation of a digital television set-top box:

1 - television digital set-top box;

2 - tuner;

3 - demodulator;

4 - specialized VLSI;

5 - CI + (an interface for connecting electronic modules with additional data encoding, available in modern digital television receivers, which allows you to view encoded channels when connecting conditional access modules with a decoding card);

6 - Smart card (a device for reading plastic cards with a built-in microchip intended for receiving pay-TV programs);

7 - S / PDIF;

8 - SCART (a connector that complies with the European standard for connecting multimedia devices, such as a TV, VCR, DVD player);

9-HDMI;

10 - remote control;

11 - front panel module;

12 - component video;

13 - composite video;

14 - USB (interface for serial data transmission for medium-speed and low-speed peripheral devices in computer technology);

15 - power module.

An example of the implementation of the system is a digital television set-top box 1, which receives signals of DVB-T2 standards (including in Multi-PLP mode), DVB-T and DVB-C of television broadcasting using tuner 2. The set-top box is supplied with power supply 15 with an output voltage 12 V and a maximum current of 1.5 A. The product is controlled by an infrared remote control 10 using the on-screen menu in Russian. The control system of the remote control 10 corresponds to the RC-5 protocol of Philips. Device control is also provided from the front panel module 11, with which functions such as switching channels, adjusting the volume, switching the set-top box from standby to operating mode and vice versa are performed. A high-frequency signal is input to tuner 2 with a working frequency band of 174-230 MHz, 470-862 MHz in accordance with DVB-T, DVB-T2 standards and with a band of 47-862 MHz in accordance with DVB-C standard. At the output of tuner 2, a balanced intermediate frequency signal (36.166 MHz) is generated, which is fed to the input of demodulator 3. The tuner and demodulator are controlled by a specialized VLSI 4. From the output of demodulator 3, the MPEG-2 transport stream enters a specialized VLSI 4. Scrambled programs from the transport streams are additionally processed by conditional access systems (CI + 5 or SmartCard 6), then transport stream packets are sent to MPEG-4 video decoder (not shown) standard (SD) or high (HD) times Addressing and audio decoder (not shown). Then, analog image signals (both composite 13 and component RGB or YPbPr 12) and sound signals are generated (for sound there is also a digital output in S / PDIF 7 format), which are subsequently output via the SCART 8 connector. digital HDMI 9 for high definition (HD) output and USB 14 for recording and playing data. The use of this utility model allows receiving cable digital television broadcasting of DVB-C standard along with DVB-T, DVB-T2 broadcasting standards, and also makes it possible to receive DVB-T2 standard programs in Multi PLP mode, while realizing the function of receiving paid programs using a conditional access module connected to the DVB-CI + interface or a SmartCard system card.

The source of information:

http://rolsen.ru/products/digital_electronics/dvbt2_t1/rdb602/;

Operation manual "Digital set-top box for receiving DVB-T2 / DVB-T channels, models RDB-601, RDB 602".

Claims (1)

Digital set-top box, including a tuner and demodulator for receiving and demodulating the European standard for digital terrestrial television broadcasting (DVB-T) and the European standard for second-generation terrestrial digital television broadcasting (DVB-T2) with the ability to decode signals according to MPEG-2 and MPEG-4 standards based on an ultra-large integrated circuit; analog and digital audio and video interfaces, including an interface through which a high-resolution video signal is sent to the output, a front panel with buttons for controlling the functions of the set-top box, designed to receive commands from an infrared remote control; a power module with a power cable and network plug, characterized in that the tuner and demodulator are capable of receiving signals of the European standard for cable digital television broadcasting (DVB-C) and the European standard for second-generation digital terrestrial television broadcasting (DVB-T2) in multi-stream mode .

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