Summary Box: Sony takes aim at iPad in Japan

THE AMBITIONS: Sony Corp. says it wants to become the biggest player in Japan’s growing Android tablet market by changing the way the devices are used.

THE PRODUCTS: It unveils its first tablets to rival Apple’s iPad. Sony will begin selling the Tablet S in Japan on Sept. 17 starting at about 45,000 yen ($584). The smaller, dual-screened Tablet P will hit Japanese stores by November at a price yet to be determined.

THE MARKET: The iPad holds about 85 percent of Japan’s tablet market, though tablets based on Google’s Android system are expected to gradually gain ground.