Nippon Telegraph and Telephone Corporation

Ryoma Tanase

Hiroaki Gomi

To provide a technique for presenting a guided person with a direction in consideration of a relative orientation of a force sense presentation device with respect to an orientation of a camera. A direction presentation apparatus includes an instructed direction calculating unit which calculates, using a first angle in an external coordinate system representing an orientation of a camera that takes an image in front of a guided person and a second angle in the external coordinate system representing an orientation of a force sense presentation device that presents the guided person with a predetermined direction, an instructed force sense vector (hereinafter, referred to as a second instructed force sense vector) in a force sense presentation device coordinate system representing a direction to be instructed to the force sense presentation device from an instructed force sense vector (hereinafter, referred to as a first instructed force sense vector) in a camera coordinate system representing the direction to be instructed to the force sense presentation device.

Direction presentation apparatus, direction presentation method, and program

Provided is a technique for more accurately calculating a direction to be presented to a guided person using a force sensation presentation device held by the guided person. In particular, the device uses geomagnetic distortion. A direction calculation apparatus includes a circuitry configured to calculate a direction to guide the guided person. The calculating uses a geomagnetic map that includes a geomagnetic vector and a gravitational acceleration vector of a reference posture of the device in a reference coordinate system at a position included in a predetermined range. The calculating includes calculating a first matrix and a second matrix to calculate an instructed force sensation vector, which indicates a direction to guide the person. The first matrix includes vectors of the reference posture of the force sensation presentation device. The second vector includes vectors at a current posture of the force sensation presentation device in the reference coordinate system.

Direction calculation apparatus, direction calculation method, and program

Provided is a pseudo force sensation providing device that can accurately measure an external magnetic field despite a small size thereof. Provided is a pseudo force sensation providing device including: an electrical actuator that performs physical movement based on a control signal supplied thereto; a contact mechanism that performs periodic asymmetric movement that causes a user to perceive pseudo force sensation, based on physical movement of the actuator; a magnetic sensor that measures an external magnetic field; and a shielding member that is provided between the actuator and the magnetic sensor, and surrounds a portion of the actuator on the side of the magnetic sensor, to block a magnetic field on the side of the magnetic sensor generated by the actuator.

Pseudo force sense generation apparatus

A simulated force sensation based on an external object is presented without making contact with that external object. Asymmetrical movement based on a first physical quantity or a function value of the first physical quantity is carried out, and a simulated force sensation based on the asymmetrical movement is presented, the first physical quantity having been obtained by measuring a distance from an external object to a simulated force sensation presenting apparatus.

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Tokyo, Japan

Ryoma Tanase