But more recently the dollar has risen against the Japanese yen, the euro and other currencies.
But the firm has forecast a 20bn yen profit for the current financial year ending in March.
There are a number of factors contributing to the yen's rise, currency traders say.
The dollar fell against the yen late in the day after an earlier rally.
On Thursday, the greenback reached 100 yen for the first time in four years.
The renminbi hit 16.588 yen on Friday, the strongest it has been since 1998.
It also dipped 0.5% to 125.50 yen against the euro in early Asian trade.
An SDR's value is based on a basket of the dollar, euro, pound and yen.
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Sony said the yen's recent fall, which makes its goods cheaper for foreign buyers, boosted sales.
The chart above shows that in 1980, the rate was 270 yen per dollar.
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Assets seen as havens, such as U.S. Treasury bonds, gold and the yen, all gained ground.
And they are not likely to respond by buying Yen to hold its value up.
On Thursday, the yen had soared to a record high of 76.25 against the dollar.
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The yen fell to 81.87 against the dollar in afternoon trading, according to Reuters.
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Mr. Amari suggested that the correction of the strong yen had mostly been completed.
The yen also has improved, moving from 134 yen to the dollar then to 124 now.
The rising yen against the dollar makes Japanese goods considerably more expensive for American consumers--Japan Inc.
The bank essentially performs foreign exchange transactions, such as yen vs. euro, or dollar vs.
Meanwhile, the Japanese yen weakened further on Tuesday, another positive sign for the economy.
Lars Svensson, at Princeton University, favours a big depreciation of the yen to push up prices.
There is a relationship between a weak yen and growth, but it's more tenuous.
As a start, note the widespread skepticism about the sustainability of a weak yen policy.
That lower dollar price will help Toyota to sell more cars and earn more yen.
Intervention has restrained the unit thus far, although the yen remains close to an all-time high.
Japan's Nikkei Stock Average slipped 0.2% as some strengthening in the yen weighed on exporter shares.
Automakers and heavyweight tech companies advanced in Seoul, with the yen's rebound providing relief.
Unlike Sergio Garcia, Yen-Ling Rogers is a US citizen, a flight attendant and not famous.
Shares in Takata fell 9% to 1, 819 yen on the Tokyo Stock Exchange on Thursday.
Some 60% of Sony's costs, but less than 30% of its revenue, is in yen.
To this end, the dollar remains attractive, as well as the yen and even the euro.
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