John Sunwoo

Actual remote control: a universal remote control using hand motions on a virtual menu

Consumer electronic devices are becoming more complex and diverse. In order to provide users with an easy and convenient way of controlling various consumer electronics, it is necessary to use a universal way to control various devices. This requires using a user-friendly and intuitive interface. We introduce a wristwatch-type of remote that offers a unified way to control various devices. Total of seven gestures that are based on hand motions are defined. These seven gestures are suitable to the wearable wristwatch-type device. For a variety of systems, these gestures can be used in the same way. Gestures are not designed and analyzed in a discrete manner; instead, they are designed in continuous hand motions and analyzed in gesture commands. Also, a method of modeling a virtual menu from the menu on a consumer electronic device is introduced. With the virtual menu, the user is able to control various devices by using gestures. The virtual menu has to reflect hand motion characteristics and represents functions of electronic appliances. The virtual menu is implemented in XML to represent the basic menu construction and its properties. In order to use virtual menu, we introduce how a users hand motions can be used in a fast and effective way. Finally we compare our wearable remote control to the conventional remote control through user tests in terms of user convenience and efficiency.

Development of a single 3-axis accelerometer sensor based wearable gesture recognition band

A daily-wear wearable system is one of the most convenient mediums in practical application scenario of transferring various information data or services between two users as well as between a user and a device. To implement this service scenario, we chose to develop a wearable forearm mounted accelerometer based input system. A set of gesture commands was defined by analyzing intuitive forearm movements. A hardware system and software recognition engine that utilizes the accelerometer sensor data to recognize the gesture commands were implemented and tested. This paper describes the development techniques of a wearable gesture recognition system. It also includes discussions of software and hardware design and how variations in these affected gesture recognition rate by analyzing experimental results from the actual implementations.

A gestural input through finger writing on a textured pad

We describe a new input method that utilizes patterned vibration that is generated through the finger writing on a textured pad. Using a flexible or a foldable textured pad which can be worn by the user can bring more diverse applications than conventional input interfaces such as a touchpad or tablet screen.

A Distributed Wearable System Based on Multimodal Fusion

Wearable computer can be worn anytime with the support of unrestricted communications and variety of services which provides maximum capability of information use. Key challenges in developing such wearable computers are level of comfort that users do not feel what they wear, easy and intuitive user interface and power management technique. This paper suggests a wearable system that consists of a wristwatch-type gesture recognition device and a personal mobile gateway that functional input/output modules can be freely plugged in and taken out. We describe our techniques implemented during our wearable system development: 1) multimodal fusion engine that recognizes voice and gesture simultaneously, 2) power management technique and 3) gesture recognition engine. Finally, we evaluate the performance of our multimodal fusion engine, and show the power consumption measurement data of our system built with the power management technique.

Actual remote control: A wearable remote control on wrist

Consumer electronic devices became more complex and diverse. We suggest a wristwatch-type wearable that offers a unified way to control various devices using motion on virtual menu. Finally we compare our wearable remote control to the conventional remote control through an experiment in terms of user convenience and efficiency.

Context-awareness on a hoodie: Knowing when the hood is taken off the head

Development of conductive yarns have accelerated the natural integration of wearable computers into garments. However, the application to various types of clothing needs to be explored individually. A hoodie is one type of clothing that may be suited to interact with the head. For its operation, it is important to know when a user has put the hood on the head, or has taken it off the head. We introduce a hoodie that can automatically recognize the hoods position, not by equipping it with a dedicated sensing hardware, but by utilizing a conductive yarn based network that is built into the hoodie. Fabric Serial Bus (FSB) protocol is used to detect the change of electrical characteristic on the communication yarn, when the hood position changes.