RU95938U1 - STB DIGITAL TELEVISION - Google Patents

Abstract

 A subscriber set-top box including a DVB module with a VLSI-based digital signal decoding and processing board with the ability to decode an MPEG-2 signal, a DVB-T tuner, analog audio and video interfaces and an infrared receiver from a remote control; DVB power module, equipped with a power cable with a network plug and connected to the DVB module by a power cable loop, with a remote control on a controlled infrared radiation source, characterized in that the DVB module with a VLSI-based decoding and signal processing board is capable of decoding a signal MPEG-2 / MPEG-4, equipped with additional analog audio and video interfaces and a digital audio interface, additionally has a DVB-C tuner for receiving cable television programs, the module full access and a slot for installing a conditional access card to provide the possibility of receiving pay-TV programs, a control panel including an infrared receiver and a sign-synthesizing indicator connected to the DVB module by a cable.

Description

The utility model relates to television devices and can be used to receive television programs of digital terrestrial broadcasting systems STB / DVB-T / MPEG-2 / MPEG-4 / HD.

The closest analogue to the claimed utility model is a digital television set-top box DVB-T, produced by the Ufa plant “Promsvyaz” based on VLSI, for example, NXP Semicondactors. The set-top box incorporates a DVB-T module, which consists of a DVB-T decoding and signal processing board with the ability to decode an MPEG-2 signal, a DVB-T tuner, and an infrared receiver from a remote control. It also includes a power module, a power cable and a power cable with a power plug, in addition - a remote control on a controlled infrared source is supplied.

The main characteristics of the analogue:

- input frequency range, MHz:

(in meter range) 174.5-226.5 (in decimeter range) 474-858 - frequency band of the digital channel, MHz 8

- minimum input signal level, dB μV:

for maximum protection 23,4 for minimally protected mode 45.9 - speed of the received digital stream, Mbps 4.98-31.67 - interfaces: (audio, video) Scart

The main functionality of the analogue is tuning - automatic and manual search for programs, updating programs, editing programs, sorting programs, renaming programs, deleting programs, placing programs in the favorites list, switching programs, adjusting sound volume.

A disadvantage of the analogue is the inability to receive digital television broadcasting programs of the DVB-T MPEG-4 standard, which is the digital broadcasting standard adopted in the Russian Federation.

The technical result of the utility model is the ability to receive standard-definition digital terrestrial television programs MPEG-2 / MPEG-4, as well as high-definition programs of HD standard 1080i and the ability to play high-definition programs on modern liquid crystal (hereinafter referred to as LCD) or plasma Full HD TVs .

The technical result is achieved by the fact that in a digital television set-top box including a DVB-T module with a DVB-T decoding and signal processing board with the ability to decode an MPEG-2 signal based on VLSI, a DVB-T tuner, analog audio and video interfaces and an infrared receiver from the remote control; DVB power module, equipped with a power cable with a network plug, and connected to the DVB-T module by a power cable loop, with a remote control on a controlled infrared radiation source, according to a utility model, the DVB-T module for decoding and processing the DVB-T signal is made based on VLSI with the ability to decode a standard-definition MPEG-2 / MPEG-4 signal, as well as high-definition HD 1080i, while the prefix has additional analog audio and video interfaces, a digital S / PDIF audio interface, with the possibility of Nost maintain HDMI interface protocol, and is configured to control from the front panel consoles with the control and display board on which znakosinteziruyuschy indicator provides information about the age or service information.

The device can be implemented as follows. As an example of the implementation of the set-top box of a digital television, consider the circuit shown in figure 1.

Positional designations:

1 - DVB-T module

2 - tuner DVB-T

3 - analog audio and video interfaces

4 - control and indication board

5 - receiver radiation signals of the remote control

6 - remote control

7 - DVB power supply module

8 - signal loop

9 - power cable

10 - additional interfaces

Description and operation of the device

The digital television set-top box is structurally a case in which the following are installed: DVB-T 1 module with a board on which the DVB-T 2 tuner is installed, interfaces for connecting external devices (SCART, HDMI, S / PDIF) 3; connected by a signal cable 8 to a control and indication board 4, equipped with a radiation receiver for signals from the remote control 5 and control buttons, as well as a sign-synthesizing indicator (not shown in the figure); the DVB 7 power module equipped with a power cable with a power plug and a switch (not shown in the figure) is connected by a power cable 9 to the DVB-T 1 module.

The inventive utility model works as follows. An antenna cable is connected to the DVB-T 2 tuner input, the DVB-T 1 module decodes, decrypts, and converts the digital terrestrial television signal using the VLSI kit; audio and video signal through the appropriate interface (SCART, HDMI or S / PDIF) 3 is fed to the TV. The presence of a variety of interfaces and the choice of connection provides the necessary flexibility when connecting to television receivers. The DVB-T 1 module can be controlled both from the front panel of the set-top box using the buttons located on the control and display board 4, and from the remote control 6, for which the control and display board 4 has an appropriate successor for receiving and processing IR signals from remote control commands . On the indicator, control and indication boards in standby mode, the current time is displayed, in operating mode, service information, for example, channel information. All necessary settings and settings of the set-top box are carried out using the interactive menu displayed on the TV screen (not shown in the diagram). The DVB 7 power module, equipped with a cable with a power plug, works from a single-phase AC network with a voltage of 220 V 50 Hz and generates the necessary voltages to power the DVB-T 1 module.

The source of information:

Operation manual “DVB-T Digital Set-Top Box”, printed by Design Polygraph Service LLC, Ufa, 2007

Claims (1)

A subscriber set-top box including a DVB module with a VLSI-based digital signal decoding and processing board with the ability to decode an MPEG-2 signal, a DVB-T tuner, analog audio and video interfaces and an infrared receiver from a remote control; a DVB power module equipped with a power cable with a network plug and connected to a DVB module by a power cable loop, with a remote control on a controlled infrared radiation source, characterized in that the DVB module with a VLSI-based decoding and signal processing board is capable of decoding a signal MPEG-2 / MPEG-4, equipped with additional analog audio and video interfaces and a digital audio interface, additionally has a DVB-C tuner for receiving cable television programs, the module full access and a slot for installing a conditional access card to provide the possibility of receiving pay-TV programs, a control panel including an infrared receiver and a sign-synthesizing indicator connected to the DVB module by a cable.