Abstract: An eye tracking device and an eye tracking method are provided. The eye tracking device includes a sensor and multiple signal transmitting units. The sensor is disposed on an eyeball of a user. The sensor has multiple signal receiving units. The signal transmitting units are disposed around the sensor and surround the sensor. The signal transmitting units respectively transmit multiple transmitting signals. The signal receiving units receive the transmitting signals to respectively generate multiple sensing signals. The eye tracking device calculates a position of the eyeball according to the sensing signals.

Abstract: A control device and a correcting method of a control device with a strength feedback function are disclosed. The control device includes a vibrator, a driver, a strength sensor, and a processor. In correction procedures, the driver provides a driving signal with a plurality of different setting voltage values respectively to the vibrator. In each correction procedure, the driver adjusts a frequency of the driving signal to setting frequency values by time division. In the correction procedures, the strength sensor senses a strength generated by a vibration of the vibrator to obtain strength sensing information respectively corresponding to the setting voltage values. The processor analyzes the strength sensing information, the setting frequency values, and the setting voltage values to obtain relationship information between the setting frequency values and the setting voltage values corresponding to each strength sensing information.

Abstract: An eye tracking device and an eye tracking method are provided. The eye tracking device includes a sensor and multiple signal transmitting units. The sensor is disposed on an eyeball of a user. The sensor has multiple signal receiving units. The signal transmitting units are disposed around the sensor and surround the sensor. The signal transmitting units respectively transmit multiple transmitting signals. The signal receiving units receive the transmitting signals to respectively generate multiple sensing signals. The eye tracking device calculates a position of the eyeball according to the sensing signals.

Abstract: A stress feedback device and a virtual image display system are provided. The stress feedback device includes a position sensor and a pressure generator. The position sensor is configured to generate a position information based on a trigger signal and send the position information to a host. The pressure generator is configured to apply a stress to a target area based on the trigger signal and adjust an intensity of the stress.

Abstract: A pace speed advising method, a pace speed advising apparatus, and a recording medium using the method are provided. In the method, a total target distance and a total target time of a user's path are obtained, and separated into multiple time slots. Then, a route of the user's path is obtained and a route information of the route is retrieved. Finally, a pace speed of each time slot is advised according to the route information.