A system for refereeing a sports match including a portable processing device for compiling data associated with the sports match and eyeglasses including data display means for displaying the data associated with the sports match to a wearer of the eyeglasses.

An apparatus includes a first cable, a first motor configured to provide first tension to the first cable, a second cable coupled to the first cable at an end effector, and a second motor configured to provide second tension to the second cable. The first cable and the second cable are routed such that the first tension and the second tension combine to provide a force on the end effector. At least one of the first tension or the second tension is directed at least partially in a downward direction.

Provided is an information processing apparatus including a skill level difference detection unit that detects a skill level difference between a first user and a second user on the basis of sensing data regarding the first user and sensing data regarding the second user having a skill level lower than a skill level of the first user, and a presentation unit that dynamically changes and presents, during performance, skill level difference suppression information that reduces the skill level difference to at least one of the first and second users on the basis of the skill level difference detected. The sensing data is acquired through at least performance and the like performed by moving at least a part of a body of the users and other performance performed in the past with respect to the performance.

Methods and systems are presented for accepting inputs into a treadmill or other exercise equipment to control functions of the treadmill or exercise equipment. An exercise control system can receive gestures and other inputs. The exercise control system can also obtain information about the user of the exercise control system and information about the environment in which the exercise equipment is operating. Based on the input and the other information, the exercise control system can modify or improve the performance or execution of user interface and functions of the exercise equipment. The changes make the user interfaces and/or functions user-friendly and intuitive.

A method for adjusting a working state of an electronic device includes setting a predetermined value range of feature data of a user, and acquiring current feature data of the user from the camera device. The current feature data is compared to the predetermined value range of feature data. A working state of the electronic device is changed when the current feature data is out of the predetermined value range of feature data.

A ball throwing machine can include a hopper for receiving one or more balls and a ball delivery device. The ball delivery device can be used to throw or pitch a ball from the hopper to a user of the machine. The ball delivery device can include wheels to impart speed to the ball and a direction system to control the projection angle of the ball. The direction system can control at least one of the up and down angle and the side to side angle of the ball as it is thrown, among possibly other throwing parameters. A controller may be provided for controlling operation of the ball throwing machine.

A method for adjusting a working state of an electronic device includes setting a predetermined value range of feature data of a user, and acquiring current feature data of the user from the camera device. The current feature data is compared to the predetermined value range of feature data. A working state of the electronic device is changed when the current feature data is out of the predetermined value range of feature data.

Methods and systems are presented for accepting inputs into a treadmill or other exercise equipment to control functions of the treadmill or exercise equipment. An exercise control system can receive gestures and other inputs. The exercise control system can also obtain information about the user of the exercise control system and information about the environment in which the exercise equipment is operating. Based on the input and the other information, the exercise control system can modify or improve the performance or execution of user interface and functions of the exercise equipment. The changes make the user interfaces and/or functions user-friendly and intuitive.

A virtual reality display system 10 comprises a first display, a second display and a third display, the first display having a three-dimensional display volume 18 and including a plurality of projectors 12, 14, 16 for projecting a three-dimensional image 102, 104, 106, 108 into the display volume 18, the second display including at least one substantially translucent display screen 20, 22, 24, 26, 28 and means for displaying an image on the display screen, and the third display being a holographic display.

Methods and systems are presented for accepting inputs into a treadmill or other exercise equipment to control functions of the treadmill or exercise equipment. An exercise control system can receive gestures and other inputs. The exercise control system can also obtain information about the user of the exercise control system and information about the environment in which the exercise equipment is operating. Based on the input and the other information, the exercise control system can modify or improve the performance or execution of user interface and functions of the exercise equipment. The changes make the user interfaces and/or functions user-friendly and intuitive.