Image of Dreambox 7020 Satellite receiver

This Dreambox 7020 is digital satellite receiver with full Ethernet communication capabilities.  Power PC driven with Linux operating system for endless possibilities, 250 MHz PowerPC Processor.

DreamBox may change your daily life.

Digital TV dream box, a digital television signal into an analog signal conversion equipment, the current digital TV dream box  as become an embedded computing devices, has improved the real-time operating system, providing a powerful CPU computing power, used to coordinate control various parts of dream box hardware and provides a graphical user interface easy to operate, such as enhanced television electronic program guide, pictures and programs to provide introduction and background information. Meanwhile, the dream box with "fool the computer" capability, so that an internal software features and a little two-way transformation of the network, it is easy to implement, such as Internet browsing, video on demand, home e-business, telephone communications and other services can be described as the world Yawing Dab. 

Take notic of Dreambox

I have been using satellite antenna to receive television. I just started receiving the D2MAC format of analog TV. Now after a few years, satellite television is already something of the past, digital broadcast DVB-S format gradually rises. The first generation of satellite receivers (set-top boxes, AKA demon) to be a satellite television channel vendors renting. 

They only equipped with some humble components, channel switching slow, OSD shabby for a nuisance, not output digital audio, the recipient of low sensitivity, MPEG2 decoder poor results, and even firmware or lock Dreambox 500c. Only by the suppliers with their feelings for you to upgrade the market was also a small number of low-cost digital receiver there, but the supply them with satellite television provided by the special services (such as Electronic Program Guide AKA EPG, Pay Per View AKA PPV ° etc.) is not fully compatible. 

The second generation of satellite receivers to Sat 310/410 and Aston Xenia series as representatives of their set-top boxes is a pioneer bookshelf, and separated from the service providers, and the official decryption card compatible. Through pc, you can set each of them to re-channel position, the management of your favorite channels, and even can use the Serial Line firmware upgrade. 

Now, the third generation of set-top boxes already listed. Dream box users are a highly recommended by the third generation of machines. The IBM PowerPC and MPEG1 / 2 hardware decoding the support of the open-source Linux system with new set-top box is completely open. Dream box provided quality images and sounds; there is many other connected interfaces with the outside world: Ethernet, USB, PS2, Compact Flash and two Smartcard readers. 

Dream box performance excellence: the ability to set up various satellite antennas, satellite channels and no quantity restrictions, fast channel scanning speed, allowing direct digital recording, and so on. If would like to receive encrypted channels, you only need a legitimate company received from the corresponding decryption support for the card and a PCMCIA card CAM. Or you can load the built-in smartcard reader can use the decryption card firmware. As Dreambox 500c more like a computer instead of ordinary consumer electronics equipment, need more time to familiar with it, make the best use of it.

Display Technology of Dream box

In terms of the television and computer monitors, CRT display is a mature technology, but with low-resolution TV display text, especially less than 24 × 24 in small print, the problem becomes complicated. TV picture tube is a low-resolution large pitch tube, only for display 720 × 576 or 640 × 480 image, and its deflection system is fixed, for the 525 line 60Hz or 625 line 50Hz design, and Digital TV more than 18 kinds of display formats. Internet access will have to comply with VESA format, obviously, the TV display system cannot adapt to so many formats.

In addition, low frame rate of interlaced television scanning, when the display graphics and text, and background luminance signal flashing, flickering horizontal lines between the lines there. If the progressive scan converter to the TV on computer graphics, horizontal edge of the field will appear only in odd or even field, display time close to the human eye's persistence of vision, the edge will have severe flicker and, therefore, to use television machine online, we must remedy the defects in the TV show.

According to technical difficulty and cost of two ways to improve the current one is anti-flicker filter, the adjacent three lines add the image into a line of proportion, so that only a single field in each of the image reproduced, filtering method called the three lines in this way. Three lines of filtering method is simple and easy to implement.

Another method is to interlaced into progressive scan, and an appropriate increase in frame rate, this approach to multiply the number of scan lines and field number, in order to increase the number of not out of nothing as to ensure the continuous activities of the screen nature, we must make the line, the venue and the motion compensation interpolation operation, must be a dedicated chip and complex technology can be achieved, in this way the computer graphics on the TV show's quality is very good, but times must be in a progressive and scanning can be achieved on the TV.

In addition to higher resolution than HDTV and VESA analog TV signals on a TV play, only show part of the screen, like the PIP must be reduced this way, we should throw line and lost games. To ensure the continuity of the same image, but also the interpolation operation.

Dream box or Pac’s hard disk record

As shown in the following chart by pressing two buttons can begin recording:

OSD open in the circumstances, when the equipment in the recording, you can see that there is a flashing red lattice. When recording, you can use time shift function: to stop playback press the yellow button (to record) to do popcorn (or any other matter), then press the green button to return to play. However, this function is not perfect. I found this time shift function in Gut and fat image, there is also to be improved. Intervals recorded stream, the file mode, the choice of paper, press the OK will be able to play. Installation Electron decoder can put you in your favorite media player in the spectator. Or, you can use Video LAN. Video LAN is easy-to-use, stable and able to read TS perfect document. Using DVD playback machine.

As digital TV and DVD using the same compression format, with DVD to record it can be said to be taken for granted. This process includes advertising and creative shear DVD. On this theme, Doom9 has an excellent guide article. Of course, you can record things turn into other formats. 

If you want to create a SVCD, I recommend Doom9's DVB to SVCD guide, Div X / Xvi D transformation, I recommend Doom9's DVB to Div X / Xvi D guide. Dreamt LAN can use on radio or Win grabber Video A can also do this purpose. Guidelines in this regard will be introduced.

In Dream box play Div x and other formats Dream box can not deal with hardware MPEG-2 more than the complex flow. However, the PC to complete on-the-fly Div X to MPEG-2 conversion and stream this to the Dream box is feasible. It requires a powerful PC, but quality will decline because Div X and MPEG2 between conversions would normally lead to visible quality loss.