Sharp is discontinuing the production of two of its three Galapagos tablets less then a year after launching them.

The 5.5-inch and 10.8in Galapagos tablet computers will be discontinued as of September 30, Sharp announced. The devices were on sale in Japan.

When the company introduced the tablets in December 2010, it said it hoped to sell a million of the devices and in doing so take the lead in Japan from competitors like Apple's iPad and Amazon's Kindle.

With a bright, colour LCD screen and Android operating system, the Galapagos tablet appeared closer to an iPad than a Kindle, but users were not allowed to download or install software of their choice. The device was also limited to Sharp's e-book reader software and and was introduced without a multimedia player.

The 10.8in model was priced midway between Apple's 16GB and 32GB Wi-Fi iPad models, and was a lot more expensive than Amazon's 9.7in Kindle. The 5.5in model was more expensive than all models of the Kindle and Sony Reader at the time.

Sharp will continue to sell the 7in Galapagos model, which runs Android 3.2. Users can watch HD movies and play 3D games on the tablet. Sharp did not disclose sales figures for the 5.5in and 10.8in tablets.