Google's Android 2.2 platform, known as Froyo, has not been optimized for tablets, a Google executive said this week.

The Android Market will not be available on devices that don't allow applications to run correctly, Hugo Barra, director of products for mobile at Google, said in an interview with TechRadar.

"Which devices do, and which don't will be unit specific, but Froyo is not optimised for use on tablets," Barra told the publication. "If you want Android market on that platform, the apps just wouldn't run, [Froyo] is just not designed for that form factor."

There are currently several Android-based tablets in the works, including those from LG, Lenovo, and Samsung. Google, meanwhile, is working on its Chrome operating system, though it plans to release Chrome OS-based netbooks before tablets.

"Chrome OS is an operating system which is in early availability and it's targeted primarily at the netbook space today," Google CEO Eric Schmidt said during a keynote speech at the IFA conference in Berlin this week. "Because it's free and open source, people will also use it for tablets. But I think it's too early to say exactly how it'll play out. We're looking forward to the partnership announcements later this year."

Last month there were rumors that HTC was prepping a Chrome OS-based tablet that would run on Verizon's network, but nothing has been announced.