LONDON (Reuters) - Shares of video search engine firm Blinkx (LSE: BLNX.L - news) surged 50 percent to a seven-month high on Friday, on talk that Internet giant Google (NASDAQ: GOOG - news) and media conglomerate NewsCorp may bid for the firm.

The shares were up to 36.75 pence at 10:53 a.m., their highest level since September, valuing the firm at around 102 million pounds.

Blinkx, founded in 2004 by Sri Lanka-descended Briton Suranga Chandratillake, floated on London's junior AIM market in May 2007 following a merger with another UK search engine firm, Autonomy.

The speculation may have come in anticipation of a May 24 expiry of a clause which stipulates that $50 million should be paid to Autonomy in the event of a buyout within a year of its initial share sale, IPO filings show.

Blinkx may also be a target because of its technology and its strong consumer focus, said Piper Jaffray analyst Rajeev Bahl.

Talk of a bid "does not sound ridiculous," he said. "If there were to be a bid, the main search engine companies like Google and Yahoo (NASDAQ: YHOO - news) would be sensible bidders. Blinkx have got very intelligent search engine technology and a number of licensees."

Officials at all three companies were not immediately available for comment.

More people visited Blinkx-linked videos by weekly market share than Google's UK service, data compiled by third party reporting agencies like comScore, Hitwise and Quantcast showed in November (Frankfurt: A0S9N7 - news) .

(Reporting by Hsu Chuang Khoo; editing by Rory Channing)