What everyone else has said here is spot on. The pip value for USD/JPY trades is about the same as for other currency pairs even though the decimal point is in a different place. It might help you to see an example of the math behind this.
Suppose someone buys 1 microlot (1000 units) of USD/JPY at 81.14 and then sells it for a 1 pip profit at 81.15. How much money did he make?
He bought $1000 and paid 81,140 yen. He then sold those $1000 for 81,150 yen. That means his profit was 10 yen for a 1 pip move. We can get the US dollar equivalent by dividing 10 yen by the USD/JPY exchange rate of 81.15 and get 0.12. So the pip value for USD/JPY on 1 microlot is 12 cents.
How does that compare with EUR/USD?
Suppose the same trader buys 1 microlot of EUR/USD at 1.2778 and then sells it for a 1 pip profit at 1.2779. How much did he make?
He bought 1000 Euros and paid $1,277.80 He then sold those 1000 Euros for $1,277.90. That means his profits was 10 cents on a 1 pip move. So the pip value on EUR/USD is 10 cents, while the pip value on USD/JPY is 12 cents.
These examples show that for any currency pair, it's the second currency that determines the value of a pip. Below is a screenshot of the Simple Dealing Rates window on the Trading Station platform. In it you can see the pip value or pip cost for each currency pair. Notice that all the yen pairs have a pip value of 12 cents.