Patent ID: 8694509

Claim:
A memo data search method, the method comprising: receiving an input of memo data; storing the memo data in the form of a bit stream; searching, when a search for the memo data is requested, a memo index database for the memo data; and displaying a search result, wherein the storing of the memo data comprises: converting, when a continuous element of the memo data is detected, the continuous element into a segment of the bit stream, the segment having a length proportional to a length of the continuous element, wherein each bit of the segment of the bit stream corresponding to the continuous element has a bit value of 1; and converting, when a discontinuous element of the memo data is detected, the discontinuous element to another segment of the bit stream, the other segment having a length proportional to a length of the discontinuous element, wherein each bit of the other segment of the bit stream corresponding to the discontinuous element has a bit value of 0.