Apparatus and method for searching for digital ink query
US7778464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Mar 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/334
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for searching a handwritten memo, which is input by a user using a digital pen interface, for a word corresponding to the user's query. The apparatus includes a preprocessing unit which removes unnecessary portions from digital ink data of an input query phrase and an input memo to reduce an information amount, a feature extraction unit which extracts a feature vector from the digital ink data having the reduced information amount, and a query searching unit which searches the memo for a portion matched with the query phrase in units of segments. Therefore, an accurate result can be obtained quickly when an existing memo or document is searched for desired content by inputting a query phrase using a digital pen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.