I have been hired by the patent owner , e.DIGITAL Corporation , in connection with the above captioned reexamination of U.S. patent NO 5,491,774 ( hereinafter “774 patent “).

My qualification and experienced are described in my resume ,which is attached as exhibit B , including over thirteen years as an application engineerat Linear Technology and over 5 years as an Analog and power design engineer at Apple Computer .I have a great deal of experience and familiarity with the art of Battery Charger System Design, Power path Management Design and Switching Power Supply design. I am familiar with the level of ordinary skill in the art with respect to the subject matter at issue as of April 19 , 1994.

The claimed property date of the “ 774 “ patent , specifically , I believe that a person of ordinary skill in the art at that time would have a bachelors of science in electrical engineering or similar , and 5 years experiencein Analog Circuit Design . While I am expert in this art area , I am opining based on one of ordinary skill in the art. Further I am being compensated at an hourly rate of $ 275 dollar per hour. My compensation is in no way dependent upon my testimony here.

I understand that a request for Ex- parte reexamination of the “ 774 “ patent was filed on Oct 27, 2010 and resulted in reexamination control number 90/011/302. I have reviewed and am familiar with “ 774 “ patent and the request and the order granting Reexamination dated Jan ,11, 2011.I have been asked how one of ordinary skill in the art would understand prior art applied to the currently reexamined claims of the “ 774 “ patent reproduced below . Accordingly I have reviewed and am familiar with followings ;

A -Kimura et al” Sharp “

B - " Sharp "

C - Sudoh "