GEORGE TOWN, Grand Cayman, Jan 15, 2014 (GLOBE NEWSWIRE via COMTEX) — O2Micro International Limited OIIM +1.31%  , a global leader in the design, development and marketing of high-performance integrated circuits and solutions, announced a patent grant for its Power Source Detection topology from the Japanese Patent Office.

This invention, issued 19 claims under Japanese patent number 5,388,484, compares a detection voltage to a predetermined reference voltage to identify whether the power source is a USB host or an AC adapter.

Bill Densham, strategic marketing director, O2Micro, remarked: “Like its U.S. counterpart issued under patent number 8,242,742, it is part of a charger IC. This topology enables an intelligent charger to adjust the charging current to the power source capacity. Higher powered sources will result in faster charging times.”

About O2Micro

Founded in April 1995, O2Micro develops and markets innovative power management components for the Computer, Consumer, Industrial, Automotive and Communications markets. Products include LED General Lighting, Backlighting, Battery Management and Power Management.

O2Micro International maintains an extensive portfolio of intellectual property with 24,833 patent claims granted, and over 25,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com .

O2Micro, the O2Micro logo, and combinations thereof are registered trademarks of O2Micro. All other trademarks or registered trademarks are the property of their respective owners.

Statements made in this release that are not historical, including statements regarding O2Micro’s or management’s intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include O2Micro’s products due to adverse economic conditions in general or specifically affecting O2Micro’s markets, technical difficulties and delays in the developments process, and errors in the products. You are also referred to the Form F-1 in connection with the company’s initial public offering in August 2000, Form F-3 in connection with the company’s public offering in November 2001, and the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.

CONTACT: Scott L. Anderson

Director of Investor Relations, O2Micro

Phone: 408.987.5920, x8888

Email: [email protected]