Mac Musings

Apple Sued: Can 262,144 Colors Be Considered 'Millions'?

Dan Knight - 2007.05.21 - Tip Jar

del.icio.us Bookmark in del.icio.us

Low End Mac Reader Specials

Memory To Go Special: New 2008 iMac 2GB $42 / iMac Intel Core2 DUO & MacBook Pro 2GB $36 - 1GB $20. MacPro 8 Core Memory 4GB kit $154 / 2GB kit $94 -- Free shipping available.

Download Typestyler, still the Ultimate Styling Tool for Internet, Print and Video Graphics. Works great in Classic with a Native OS X Version on the way. Free Tryout: www.typestyler.com

LA Computer Company: Specials on AppleCare, iMac's, Apple Batteries and Apple A/C Adapters. Also Great prices on Used Apple Computers. Call 1-800-941-7654 Click Here.

OWC: NewerTech NuPower Batteries for iBook and PowerBooks Designed+Built in USA to run longer, LAST LONGER TOO! Free Battery Recycling Return Label; Quality High-Capacity from $99.95

Mac users can finally play Party Poker for Mac. Not only that, they can also learn how to play PokerStars for Mac.

Laptop Hardware Provided by TechRestore - Overnight Mac & iPod Repairs.

Compare products like desktop computers, laptops, and LCD TVs side by side! All the information and reviews to make the best purchasing decision for a new cell phone GPS products or MP3 players. The Ciao network makes searching products easy for you.

New iMac 800Mhz Memory 4GB $90, 2GB $45 - Click to Maximize your Macs...

Has Apple been shortchanging MacBook and MacBook Pro buyers ever since the first Intel 'Books shipped? That's what Fred Greaves and Dave Gatley think.

Apple claims to support "millions of colors" on the displays built into the 13.3" MacBook, 15.4" MacBook Pro, and 17" MacBook Pro. Here's what their website says:

screenshot
screenshot
Screen shots from Apple's tech specs.

What Greaves and Gatley contend is that Apple is actually using LCDs that are incapable of displaying millions of color, and that this causes the banding, sparkling, and graininess some users are complaining about. (This is only in notebooks. Apple's iMacs and freestanding displays have genuine 24-bit LCDs.)

Theoretically we're dealing with 24-bit video on all of today's Macs - 8 bits of red, green, and blue combine to create 16,777,216 colors. However, it seems that all of today's notebook LCDs only support 6 bits per color channel, which means that these 'Books can only display 262,144 colors.

However, there's a catch. An LCD pixel isn't a single spot. It's a square composed of three side-by-side red, blue, and green crystals. By using adjacent crystals on the right and/or left (sort of borrowing them from the pixel next door), we can effectively display 7 bits per channel. That's 21-bit color, which means that using clever programming these "6-bit" LCDs can actually display 2,097,152 colors.

That qualifies as "millions" in my book.

By using the pixels above and below, we've got 8 bits of color per channel and the 16 million plus that Apple claims.

Further, it seems that Apple has no choice in the matter. According to postings on ars technica, nobody builds 8-bit-per-channel LCDs that Apple (or anyone else) could be using in their notebook computers. Although the video circuitry supports 8 bits per channel, none of the available LCDs displays more than 6 bits per channel.

My question isn't whether Apple will be able to win, as I've just demonstrated that mathematically they can make their case. Even if a judge doesn't see it that way, the end users aren't going to end up with 8-bit-per-channel displays in their existing 'Books. Nor are they likely to see much money - remember the class action suit over CRT sizes that resulted in the plaintiffs receiving only a $13 rebate coupon that could be applied to a new monitor purchase or a $6 refund?

Only the lawyers will get rich.

The question is how long has Apple and the rest of the industry have been using 6-bit-per-channel LCDs on notebook computers while claiming to display millions of colors.

Oh, and one more thing: Does it really matter? Is a quarter million colors good enough, regardless of what the lawsuit contends? LEM

Dan Knight has been using Macs since 1986, sold Macs for several years, supported them for many more years, and has been publishing Low End Mac since April 1997. If you find Dan's articles helpful, please consider making a donation to his tip jar.

Recent Mac Musings

Links for the Day

Recent Content on Low End Mac

About LEM | Support | Usage | Privacy | Contacts


Have a question?
Ask an expert!

Navigation

Used Mac Dealers
Apple History
Best Used Macs
Video Cards
Email Lists
InfoMac's Low
End Mac Forum

Favorite Sites

MacSurfer
MacMinute
MacInTouch
MyAppleMenu
InfoMac
Macs Only!
The Mac Observer
Accelerate Your Mac
RetroMacCast
PB Central
MacWindows
The Vintage Mac
   Museum

DealMac
DealsOnTheWeb
Mac2Sell
ramseeker
Mac Driver Museum
JAG's House
System 6 Heaven
System 7 Today
the pickle's Low-End
   Mac FAQ

Abandonware
   Petition

Mac vs. PC Info

Affiliates

The Apple Store
Mac Connection
MacMall
TechRestore
MacResQ
ExperCom
Crucial Memory
batteries.com

Advertise

Open Link