I just basically did a search for the Mstar 7816 System Processor.
There is apparently a lot of this stuff (being polite here) out there.
Yes, like this box
or this one
A search comment from the Alibaba site stated that "there are 332
ATSC digital TV box for america from at least 30 suppliers
All these boxes look pretty much the same fro the back side. Which leads me to think that the main board is pretty much identical.
No, some of these units have small variations in connector placement that indicate different boards.This one
(I tried to embed the photo here, but it has no URL, so you'll have to follow the above link to see it.)
It claims to be an ATSC STB & DVR, and has Ethernet for networking.
But instead of antenna connections, they are labeled "LNB", which would imply satellite connections.
Also interesting is this DVB satellite box
, because it has eSATA (for a faster HDD connection), Ethernet for networking and runs the Linux OS. There are only a handful of SoCs that have SATA ports. And it would interesting to know what PVR software was used .
Neither descriptions of these two STBs (called Dreamlink and Dreambox) mention MStar or 7816.
It makes one wonder exactly who it is that is (if they still are) working on correcting all these problems with firmware up-dates.
Is it iView or someone else further up the chain.
Since Homeworx claims that FW fixes are also imminent, that might imply a common fixer. That could mean the SoC manufacturer if done in-house, or whomever they might have subcontracted for the software development.
I took a look at the iView firmware update files. I was hoping to find copyright notices that would identify the owner or developer.
Instead the mystery just deepens.
There were no copyrights. The only corporate name that popped up was "ACD Systems", and they normally produce photo-editing applications, not embedded software for DVR/PVR.
Portions of the files had "MSVC" tags, which would seem to indicate Microsoft Visual C was used!!??.
There were indications that the update flash data within each file was Lzma compressed, which would explain the lack of readable text strings and possibly no copyright text.
There was clear evidence that this system uses the U-Boot (aka Das U-Boot or universal) bootloader. That has two implications.
(1) U-Boot is released under the GNU General Purpose License. One of the conditions of using GPL software is that the source code used must be freely available. This does not mean we get access to all of the STB source code. But since iView sold this box and it (seems to) use GPL code, then that source code must be made available. In addition the product should indicate that it uses GPL code; a lot of Panasonic HDTVs use GNU Linux, and the GPL notice is printed in the owners manual and displayed in the on-screen Setup menus.
(I'm not a lawyer, so don't quote me on the GPL requirements.)
(2)To interact with U-Boot, a developer would need access to the system board through a serial console, i.e. a RS-232 port.
The 4 contacts in the rectangle near the S/PDIF connector are prime suspects for being the serial port.
This is not going to get anyone close to hacking this STB or fixing bugs. More likely you can learn a bit more about it, like the SoC manufacturer or the copyright holder of the firmware.
Since I know nothing about modern cable and satellite (I don't and won't pay for TV) Why is it that these (satellite) boxes make this claim,"Digital reception covers VHF & HUF band" Assuming HUF is a typo for UHF. Is VHF and UHF somehow part of satellite reception? Maybe this just serves to show my ignorance(s). Or.... that of those who wrote the advertising.
No, satellite signals have to be in a different frequency band so that they do not interfere with terrestrial signals. That misstatement could be a translation error or ignorance on the writer's part.
Most of the other, non-ATSC boxes are for the DVB standard. But DVB has three sub-types: T
able and S
Could you have misread "DVB-T" as "DVB-S"?
Or it seems that some boxes with DVB-S tuners (e.g. Dreambox) can be optionally manufactured with DVB-C or DVB-T tuners.
RegardsEdited by blue_z - 8/10/13 at 4:51pm