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A method of using stylus input characteristics to perform user identification, content categorization and search

IP.com Disclosure Number: IPCOM000232597D
Original Publication Date: 2013-Nov-19
Included in the Prior Art Database: 2013-Nov-19
Document File: 2 page(s) / 13K

Publishing Venue

Lenovo

Related People

Erin Wang (Song Wang): INVENTOR [+3]

Abstract

Disclosed is a method of improving user recognition, content categorization and search through handwritten contents created by stylus on electronic devices. The stylus sensor data that contain pressure, tilt angel and speed of movement provide an easy an intuitive way to analyze individual user writing habit, categorize user’s activity types and improve search.

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A method of using stylus input characteristics to perform user identification, content categorization and search

Every user has a unique way of writing using a stylus, this include the way in which a user physically holds the stylus, the amount of pressure exerted as well as speed of writing. The invention uses a combination of information such as tilt angle, pressure, and speed of movement extracted from stylus input to create identification for individual user. Based on the same sensor information that characterizes each individual's writing/drawing style, contents are automatically organized and become searchable under different categories belonging to the corresponding user. As tablets and surface computing devices are often shared among numerous users, the invention aim to provide an easy and intuitive approach to identify individual user, and perform automatic categorization and search on stylus related content creation.

Existing devices and applications related to stylus input have limited knowledge of who the individual user is, and how he/she writes and draws. To organize and categorize contents under numerous users is difficult without individual user manually providing labeling methods for identification every time on shared devices. Future tablet or surface computing devices will support multiple stylus uses but there is no means to distinguish stylus and correlated each to a different user.

Every individual have unique writing style that can be represented by the amount of pressure they exert on the stylus, the angle of tilt which indicate user's preferred style of holding the stylus, as well as the speed of movement when creating different type of contents. This information can be used towards creating a user profile that allows device/application to recognize who the user is, and what type of content is created: e.g. standard writing for note taking, drawing/sketching, etc. The sensor information related to pressure, tilt angle and speed of movement can be directly detected and calculated on the device level, or in the case of smart pen, embedded sensors on the pen can transfer these information back to the device. As First time user, a onetime identification to the device is required. Some examples of obtaining this information are: prompt for user name input, OCR tex...