The actual patent system failure here is the patent is not useful -- it's not valuable. If you needed this solution, you could sit down and derive it in less than an hour. That's not because it's obvious, but because the scope is so small.

The only difference between this patent and say a media codec is how long it would take to reinvent it. It might take you 200 years to come up with something as good as h.265, but there's no magic to it. There's a problem, somebody came up with a solution, somebody else could do it again given enough time to work on it. This is true for everything that's ever been patented.

The point of patents is to compensate for value of the work needed to reinvent, and so the real problem here is that value is less than any sane minimum. The value is less than the patent examiner's time to evaluate it! But court rulings have said it doesn't matter how insignificant a patent is, as long as it does anything at all it's "useful", which leads to these kinds of worthless patents.