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SAN FRANCISCO, March 21 (Xinhua) -- Microsoft on Monday sued Barnes & Noble, claiming patent infringement by the largest book retailer in the United States.Microsoft said it filed legal actions on Monday in both the U.S. International Trade Commission and the U.S. District Court of the Western District of Washington against Barnes & Noble, as well as Foxconn and Inventec, two manufacturers of Barnes & Noble's devices.According to Microsoft, the actions focus on the patent infringement by Barnes & Noble's Nook e-reader and tablet, both of which run Google's Android operating system.The patents at issue cover a range of functionality embodied in Android devices that are essential to the user experience, including natural ways of interacting with devices by tabbing through various screens to find the information they need, surfing the Web more quickly and interacting with documents and e-books, Microsoft said in a press release."The Android platform infringes a number of Microsoft's patents, and companies manufacturing and shipping Android devices must respect our intellectual property rights," Horacio Gutierrez, Microsoft's corporate vice president and deputy general counsel, was quoted by the press release as saying.Writing in a separate company blog post, Gutierrez said that the latest actions bring to 25 the total number of Microsoft patents in litigation for infringement by Android smartphones, tablets and other devices.He noted that Microsoft has established a licensing program to address Android's ongoing infringement, and leading Android smartphone manufacturer HTC has taken a license under this program.Amazon.com also signed a patent license with Microsoft last year covering its Kindle e-reader, he added."Unfortunately, after more than a year of discussions, Barnes & Noble, Foxconn and Inventec have so far been unwilling to sign a license, and therefore, we have no other choice but to bring legal action to defend our innovations," Gutierrez said in the blog post.

CHICAGO, Jan. 21 (Xinhua) -- Chinese President Hu Jintao left Chicago for China on Friday after concluding a state visit to the United States, during which he and his U.S. counterpart Barack Obama agreed to build a China-U.S. cooperative partnership based on mutual respect and mutual benefit.Hu, who began his four-day visit Tuesday, had extensive and in-depth discussions with Obama at the White House on Wednesday on major bilateral, regional and world issues.Chinese President Hu Jintao shakes hands with U.S. President Barack Obama during a bilateral meeting at the White House in Washington, the United States, Jan. 19, 2011.The two sides reached "important agreement on China-U.S. relations and major international and regional issues of shared interests," the Chinese president said when he and Obama met the press following their discussions."We both agree to further push forward the positive, cooperative and comprehensive China-U.S. relationship," Hu said, adding that both sides also pledged to forge "a China-U.S. cooperative partnership based on mutual respect and mutual benefit" for the benefit of the two countries and beyond.

HEFEI, Feb. 2 (Xinhua) -- Chinese Premier Wen Jiabao has visited farmers and workers in Dabieshan Mountain area, an old revolutionary base in east China's Anhui Province, to extend new year greetings ahead of the Spring Festival, which falls on Thursday.On Tuesday, Wen went to the area's Jinzhai County, once an important Red Army revolutionary base, to learn about the local economic and social development situation.He visited Zhaoyuan Village and called in on farmer Zhao Mengqi. Wen chatted with Zhao, asking about his family's income and their preparations for the lunar new year.Zhao works as a migrant worker in Wujiang City, an economically-developed part of Jiangsu Province. His son and daughter-in-law work in Shanghai. They returned home on the eve of the Spring Festival."With the income we earn working in cities and what we earn growing crops, our family income has increased and we have rebuilt and renovated our house," Zhao told Premier Wen. A paved road now allows buses to reach the village, Zhao added.Wen said, "Only when the people living in old revolutionary bases live better lives can we feel relieved."At farmer Zhao Kongying's home, Wen joined the family in making "yuanzi," a glutinous rice ball traditionally eaten during the Spring Festival.Wen later went to Hetang Village. There he visited villager Yu Shuhua's home and urged the local government to provide more help to needy people to ensure they have a happy lunar new year.At dinner time, he went to villager Zhang Jiasheng's home, joining the family to prepare dinner. He wore an apron and made a soup for the family.During the dinner, Zhang told Wen the village is rich with chestnuts, tea and traditional Chinese medicine, adding that tourism is also a source of income for the village.Wen said help and support for the old revolutionary base should be boosted, so that local people can lead happier lives.Wen also extended new year greetings to workers at the Meishan hydropower station in Jinzhai County.At retired worker Wan Benrong's home, Wen asked about the family's living conditions and their preparations for the lunar new year.After being told the couple received an extra 140 yuan each of monthly pension this year, Wen said the government has increased the basic pension for retired workers seven times since 2005."Our objective is to make you feel secure," Wen said.

LOS ANGELES, April 7 (Xinhua) -- Using NASA's Galaxy Evolution Explorer (GEE) satellite, U.S. astronomers are hunting for nearby, hard-to-see stars which could very well be home to the easiest-to-see alien planets, it was announced on Thursday.U.S. astronomers are ferreting out the new targets after the glare of bright, shining stars has frustrated most efforts at visualizing distant worlds, NASA's Jet Propulsion Laboratory (JPL) said.So far, only a handful of distant planets, or exoplanets, have been directly imaged. Small, newborn stars are less blinding, making the planets easier to see, but the fact that these stars are dim means they are hard to find in the first place."Fortunately, the young stars emit more ultraviolet light than their older counterparts, which makes them conspicuous to the ultraviolet-detecting GEE," JPL said in a press release."We've discovered a new technique of using ultraviolet light to search for young, low-mass stars near the Earth," said David Rodriguez, a graduate student of astronomy at University of Californian, Los Angeles. "These young stars make excellent targets for future direct imaging of exoplanets."Young stars, like human children, tend to be a bit unruly -- they spout a greater proportion of energetic X-rays and ultraviolet light than more mature stars. In some cases, X-ray surveys can pick out these youngsters due to the "racket" they cause. However, many smaller, less "noisy" baby stars perfect for exoplanet imaging studies have gone undetected except in the most detailed X-ray surveys. To date, such surveys have covered only a small percentage of the sky, according to JPL in Pasadena, Los Angeles.Rodriguez and his team figured that the GEE, which has scanned about three-quarters of the sky in ultraviolet light, could fill this gap.Astronomers compared readings from the telescope with optical and infrared data to look for the telltale signature of rambunctious junior stars. Follow-up observations of 24 candidates identified in this manner determined that 17 of the stars showed clear signs of youth, validating the team's approach, JPL said."The Galaxy Evolution Explorer can readily select young, low- mass stars that are too faint to turn up in all-sky X-ray surveys, which makes the telescope an incredibly useful tool," Rodriguez said in the release.

BEIJING, Feb. 19 (Xinhua) -- Chinese Vice Premier Li Keqiang has demanded the comprehensive enforcement of the country's food safety laws, urging checks to be tightened against unsafe food products.China should enhance efforts to ensure food safety, which is crucial for protecting human lives and improving people's living standards, Li said while addressing a meeting on food safety on Friday, according to an official statement issued Saturday.Also, emphasis should be directed to both special campaigns, which are launched to check against unsafe food, as well as daily supervision of food manufacturers, he said.The meeting also heard reports on food safety delivered by officials from health and agriculture ministries, the State Administration for Industry and Commerce, and the General Administration of Quality Supervision, Inspection and Quarantine.Participants at the meeting agreed that China should improve its system to monitor and assess food safety risks and enhance emergency response capabilities in this regard.They also called for improvement of food safety-related laws and regulations, as well as measures to target those core factors that affect the safety of food products.At the meeting, local government departments were asked to closely cooperate and improve the system to ensure food safety.Further, the participants agreed that authorities should publicize accurate information about food safety in a timely manner, and do more to forge a social atmosphere favorable for ensuring food safety.

来源：资阳报