Updated from 5:10 p.m. EDT A year-ago profit turned into a first-quarter loss at Zoran ( ZRAN), as acquisition-related charges outweighed a doubling of revenue. After hours, the company's shares were recently down $1.40, or 7.8%, to $16.55. Zoran's stock closed regular trading at $17.95, up 30 cents, or 1.7%. On a generally accepted accounting principles basis, the chipmaker lost $10.69 million, or 25 cents a share, on $80.64 million in revenue. In the first quarter a year ago, the company earned $193,000, or 1 cent a share, on revenues of $37.83 million. Excluding charges related to the company's purchase of Oak Technology in August, Zoran would have earned $2.2 million, or 5 cents a share. That pro forma result topped the company's guidance and analysts' expectations of earnings per share of 4 cents on $76.94 million in sales, according to Thomson First Call. In February, the company projected it would earn 3 cents to 5 cents a share, excluding charges, in the first quarter on revenue ranging from $76 million to $78 million. The company offered mixed guidance: Zoran warned that it might not meet analysts' second-quarter earnings projections, but should top expectations for the full year. In its current quarter, Zoran forecast it will lose 18 cents to 21 cents a share on a GAAP basis -- which would translate into a pro forma profit of 8 cents to 11 cents a share -- on sales ranging from $90.32 million to $95.16 million. Analysts had projected the company would earn 10 cents a share, excluding charges, in the second quarter on $83.11 million in sales. For the full year, the company now expects to lose 44 cents to 47 cents a share on a GAAP basis -- equivalent to 65 cents to 70 cents a share in pro forma profits -- on total revenue ranging from $370 million to $390 million.