Abstract: Disclosed is a contact lens comprising an optical region including a first area, a second area and a third area, concentrically arranged in such order from a lens center. The first area includes a correction zone having a nearsightedness correcting power. The second and third areas each include at least two defocusing zones and at least one correction zone, wherein the at least two defocusing zones and the at least one correction zone are alternatively arranged. The second area has a first power difference of ?2.00 to ?5.00 D, the third area has a second power difference of ?3.00 to ?10.00 D, and the second power difference is equal to or more negative than the first power difference.

Abstract: A human computer interaction system and a human computer interaction method are provided. The human computer interaction system includes a first sensor, a second sensor and a processor. The processor obtains first motion sensing data of the first operating portion from the first sensor, obtains second motion sensing data of the second operating portion from the second sensor different from the first operating portion, and determines an event according to both the first motion sensing data and the second motion sensing data. Accordingly, a hybrid motion tracking method for multiple operating portion of the user is provided.

Abstract: A human computer interaction system and a human computer interaction method are provided. The human computer interaction system includes a first sensor, a second sensor and a processor. The processor obtains first motion sensing data of the first operating portion from the first sensor, obtains second motion sensing data of the second operating portion from the second sensor different from the first operating portion, and determines an event according to both the first motion sensing data and the second motion sensing data. Accordingly, a hybrid motion tracking method for multiple operating portion of the user is provided.

Abstract: A wearable electronic device is provided. The wearable electronic device includes a wireless communication unit, a processing unit, a watch interface and a display unit. The wireless communication unit performs wireless communication with a portable electronic device. The processing unit synchronizes with the portable electronic device to retrieve event data from the portable electronic device through the wireless communication unit, wherein the event data comprises a plurality of events and time information corresponding to the events. The watch interface has a dial. The processing unit controls the display unit to display a color bar surrounding the dial, wherein the color bar includes a plurality of sections to display durations of the events based on the time information. When the processing unit determines that a time-based condition or a location-based condition of the events is met, an intimating signal is generated under the control of the processing unit.

Abstract: A wearable electronic device is provided. The wearable electronic device includes a wireless communication unit, a processing unit, a watch interface and a display unit. The wireless communication unit performs wireless communication with a portable electronic device. The processing unit synchronizes with the portable electronic device to retrieve event data from the portable electronic device through the wireless communication unit, wherein the event data comprises a plurality of events and time information corresponding to the events. The watch interface has a dial. The processing unit controls the display unit to display a color bar surrounding the dial, wherein the color bar includes a plurality of sections to display durations of the events based on the time information. When the processing unit determines that a time-based condition or a location-based condition of the events is met, an intimating signal is generated under the control of the processing unit.