It seems to me that they have enough cash, plus cash flow to support a decent dividend.
There's your four bucks.
Normally I would agree, but DLB is involved in a number of fast-changing technologies, and it might be more beneficial to invest that cash into R & D -- if that's what they do.
Why do you think they have all that money stored up to use for the dividend? They don't do that much research. Better give it to the share holders than waste it on the management.