Selasa, 23 Juli 2013

How can you combine the channels of 3 different TV sources into one set of channels via coaxial cable?

best security cameras hd on Home Security Equipment on Surveillance Systems Were Quite Expensive ...
best security cameras hd image






I have seen this done so I know it is very possible.

I want security cameras on a TV channel, cable TV channels, and antenna channels, all mixed into one signal that can be split up so every TV in the house can access everything by just surfing the channels.

unlimited budget.

What hardware will I need and how will I set it up?

Don't give me a company that does this, I plan to do the installation myself.



Answer
Mixing security (ch 3 or Ch. 4) with EITHER Cable or Antenna is simple. Without two tuners on each TV - one for cable and one for antenna you can't even mix them without a need for a channel rescan. They use different frequencies, so a TV will have to constantly rescan every time you switch a source.

However, most satellite HD set-top boxes (and probably cable) allow you to connect an antenna to the set-top box, so you can access bot antenna and satellite via one box. In that case, you only need to mix the security channel (Ch. 3 or 4) with the antenna signal and you are all set.

How come security cameras are so glitchy and pixilated?




The Heroic


With HD cameras readily available, why are the majority of these cameras using the old VHS system. Isn't there a way to make it digital and condense the video size?
**I don't know much about computers, cameras, etc...but what am I missing?



Answer
For the same reason that the intercom at drive threw fast food restaurants have such terrible sound. Because they are too cheap to buy better stuff.
And because they try to record too much. If they would just record one day at a time and then delete, or only record when movement is detected, then they could record at a higher level of quality.
If you want to get a cheap security recording system, buy a used TiVo with a open account and you can have it record at a very great rate for all day long. And just hook up a video camera from the thrift store.




Powered by Yahoo! Answers

Tidak ada komentar:

Posting Komentar