Posted by Gene E. Bloch on 04/17/06 22:40

On 4/15/2006, Jeff Rife posted this:
> Gene E. Bloch (spamfree@nobody.invalid) wrote in alt.tv.tech.hdtv:
>>> Yes, but at some point it changes. And that change takes a long time.
>>> So long that there are almost two complete progressive scans of the
>>> display before the first pixel "changes" to what it should have been
>>> based on the *first* frame.
>>>
>>> Think about that for a moment.
>>
>> Document that, for a change.
>
> Um...15ms is pretty much standard for LCD pixel response times. Some
> newer ones spec 8ms, but benchmarks show that is optimistic. 15ms equals
> 1/66th of a second. If the frame rate is 1/60th of a second (typical
> for LCDs), then the math should be obvious enough for even you to see
> the result.

I didn't want to continue this discussion (which is a misnomer in this
case), but...

Two complete progressive scans, at 1/60 second each, equals 33 msec by
*my* math. Please show me how a 15 ms response time equates to two
complete progressive scans by *your* math.

Besides, I now have proof! See page 135 of PC World magazine (US
edition) for May 2006. At just about the geometric center of the page,
you can find this remark: "With LCDs, screen flicker isn't an issue
because the devices don't refresh the entire screen, just the pixels
that change. A refresh rate of 40 to 60 Hz should be fine for an LCD,
unless its manufacturer says otherwise." Since this has appeared in a
magazine, it must be true, don't you agree?

Goodbye.

Gino

--
Gene E. Bloch (Gino)
letters617blochg3251
(replace the numbers by "at" and "dotcom")

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