reply to post by mileysubet
OK.....I was trying to explain earlier, but was on my tablet and it's hard to type there. This will be a little long, but I'll try not to make it too
technical. My guess is the camera is always on. This is for the police and public's protection. However, it isn't always saving the images. Think
about DVR now. You can watch a show without recording the entire show, but also back it up to re-watch a part you missed or something like that. It is
actually recording, but it isn't saving beyond say..and hour. That's how my TV's DVR works.
Let's say this dash cam works similar. It's always on, and always recording, it just isn't always saving the video. Well..it can be turned off, but
the power to the unit would have to be cut. This cop apparently thought turning off the record button stopped it. It doesn't.
Now....either a complaint was made very early on after this happened by the family, or more likely...this probably happened near the end of the cops
shift. They probably switch out tapes/dvd's or whatever they are using as memory to record onto each day. Think about your computer now. If you
"erase" something...or basically send it to the recycle bin...it doesn't actually erase the content. All it does initially is remove the actual link
YOU would see to the item/program or whatever. It also removes the " overwrite protection" of the file. Eventually, if you continue using your
computer, that part of the hard drive will be re-used again. The file might start to get overwritten.
The only secure way to erase a hard drive is to use software which actually overwrites the program with something else. The current standard the CIA
uses is 5 overwrites to ensure data is erased completely. Since the recording medium from the dash cam that day for whatever reason was probably
removed soon after this episode happened, the data was never overwritten. It wasn't actually saved with a link either, but a good data recovery
software can find files erased months ago or longer...as long as that part of the drive hasn't been reused that much.
Sometimes...it can get overwritten once or even twice..or at least partially overwritten and the data can still be recovered. Occasionally there is
some data loss, but this seems pristine. I'm quite positive whatever was being used to record to from the dash cam was removed shortly after this
incident. Then the entire say DVD was placed into storage.
Eventually, the guy who was beat up or his nephew's lawyers ask to see the tape. They may have even subpoenaed it. The cops working evidence check the
tapes from that day and find the video had been turned off. Now...I'm not sure at this point whether the cops did the data retrieval or the lawyers
hired someone to do it, but it got done, and low- and-behold...the incident in it's entirety was there for everyone to see. It was almost a month
after the incident, so I'm guessing maybe it was the lawyers...but it could as well have just been followup by the evidence guys.
The camera was on. The cop thought he turned it off...but all he did was turn off the protected recording. Just like my TV does...I can back up for an
hour and find something on that channel. Sort of the same thing here.
I hope I explained that good enough to make sense. Basically, the cop was an idiot. If he didn't want it on tape, the best thing to do would have been
to angle the car/cam away from the scene. Technology was obviously way above his head.
edit on 16-1-2012 by webpirate because: spelling