(800) 853-2651
SHOP NOW

O/T digital tv question

N

Nancy Howell

Well-known Member
Our tv can be switched from digital to analog. When in analog mode and you punch the numbers to change the channel, it changes in a flash.

When in digital, it has to "think about it" real hard and takes about 6 seconds to change channels. Can anyone tell me why?
 
I have a dtv converter box connected to my TV(analog) and it does the same thing...The satellite dish tuner does it too, I think it has to acquire the signal and then convert it to analog for the TV to show it...just a guess, YMMV, my opinion worth what you paid for it...
Later Days,
Bill
 
I believe it is because you are picking an "exact" channel. That is why you can have 4-001,4-002, 4-003, etc. Us old people remember the channel knob (well before remote) that also had a "fine tune" dial, hit the channel then adjust for the best picture. You had a wide band on analog and tuned to either side of the channel.
 
Welcome to the new age of TV. Thank the idiots in DC for that. I have 2 different box's and 1 pops the channels in pretty quick and the other you have to sit back and wait. Real annoying.
 
Years before the current remote controllers that uses a coded light to change the channel, my father had a voice actuated remote with his floor model color television. It operated on vocal frequencies that resulted in mechanical responses that could decern between channel or show imputs. When he would say for instance, "Bob, put it on channel seven, now!" The television would magically go on channel seven. When he would say, however, "Bob, put it on All in the Family" it would go on channel seven.
 
The weaker the signal, the longer it takes for the TV to aquire enough digital information to make a picture. Mine switches in 2 seconds on a strong signal and can take as much as 15 to lock into a very weak signal.
 
Digital TV requires a computer in the tuner (the TV or the converter box) to pick up the data coming in on the channel & convert that data into a picture and sound.

The tuner is basically a very specialized computer that changes digital signals into analog signals we can understand.

The new digital format had about 4 times as many little dots, and perhaps more in wide screen, so it gets very, very much data that it needs to convert.

A cheaper TV or converter box is made with a cheaper, slower computer as it's brain, and so it takes longer for it to 'build' the picture we see.

Most digital pictures seem to be delayed about 2 seconds in digital, compared to analong.

This is the computer taking time to gather all the data and transform it into a picture we can understand.

As well, if you have a poorer signal, it takes longer for the computer to figure out the good data from the bad data, and 'lock on' to the digital signal.

And thus, the delay.

Some of the real expensive TVs with a double speed (120hrz) computer are much quicker at this.

but, ya pay for it....

--->Paul
 
Is to get rid of it.
You and your family will be smarter, happier, less afraid and more optimistic without one.


killyourtelevision.jpg
 
It has to do with the way the digital signal encodes the image. An analog television sends the entire image every 1/30th of a second, but can't make a very sharp image because of the amount of spectrum required to send fine details. A digital signal only sends the differences from one frame to the next, so when you first acquire the signal you have to wait until the entire picture has changed before you see it. In the older digital systems, you could actually see it building the picture in blocks.

The advantage to digital television is that because its not sending the entire image for every frame, you can get a lot more information, (i.e, a sharper picture) in less bandwidth.

If you have an older analog television, remember that you can't see a better picture than the analog TV is capable of displaying, regardless of how sharp a picture the digital receiver is capable of generating. Analog TV's tend to "fuzz" the picture a little so that interference isn't as obvious, and this "fuzzy" picture is the best you'll ever see on that particular TV.

Keith
 
I got the boxes for the DTV and its just like sattalite, wind blows the picture breaks up, it snows and the picture turns blocky. I was happy with analog.
 
Some how I just knew there would be something with digital that I would hate, and you are right about the wind drift. NOT GOOD if you have a real bad storm headed your way and need good info. Signal breaks up real bad when you need it the most. The digital signal must be in the UHF or higher band. VHF would almost never get interferance except if lightning was close by. I hope those turkeys in Washington are happy with all the lobbying/ payoff money they got from the electronics manufactures for this mess.
 
Many stations have only temp moved up to UHF, and will be returning to VHF after the big change back.Those that were 7-13 will mostly come back to those channels. Almost all of the 2-6 channels will be gone tho, permenantly moved up to UHF.

I agree with you. They coulda made some better choices, from what I hear, on what they picked for the digital standards, at the least.

--->Paul
 
(quoted from post at 23:23:55 03/12/09) VHF was good that's why they wanted it for the emergency band I guess!
Click to expand...
It goes waaayyy beyond 'emergency'. That is just the BS that the Washington PR people want us to hear. Yes there are a few emergency channels to be allocated, but the really big bucks come from commercial interest in those 'good' frequencies, from familiar names like AT&T, Verizon, etc. Don't be fooled!!!!!!!!!!
You didn't really believe that Buffalo Fire Dept paid billions for a new VHF emergency channel did you? :roll:
 
Oh, wah wah some of you people............
People moaned about cars replacing horses,electricity replacing lanterns and indoor plumbing replacing the outhouse.
Anybody who understands some basic radio and electronics can see why dtv had to arrive.
The radio spectrum is like land, they ain't making any more of it.
The only fault in any of this are some opportunists manipulating the change in morally questionable ways.
 
You must log in or register to reply here.

Similar threads

W
george and other thoughts
Replies
1
Views
226
Geo-TH,In
Geo-TH,In
S
Serial Number Question
Replies
9
Views
650
Swanston5954
S
M
271 won t start after fuel filter replacement
Replies
0
Views
356
MF271
M
R
Digital clock and voltage
Replies
12
Views
2K
onefarmer
onefarmer
P
Diesel Teck question
Replies
6
Views
361
Nathan (SD)
N
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top