The difference between the Schroeder patent and Woodys patent.....e.Digital uses a "sole" storage memory....in this case 'Flash memory" or digital memory under two data conditions....claim 1(digitally) and claim 19(analog).
Schroeder may have had a digital computer concept, however, data was not stored to a memory type necessitating additional massaging in order to store that data, where it was for one method of data stored only.
The point is, can the court rob e.Digital of this phrase "sole memory of the received processed sound electrical signals" as that phrase relates to two different concepts stored ?
Strange thing is, the court recognizes an analog concept that is as much recognized in the industry as digital concepts.....in the end, as sman found and pointed out, it's not about the "field of use" but in this case, the novelty of managing both those file types on the same memory.
doni