Abstract

An electronic stylus and a tracker. The tracker comprises an outer casing body (132), a tracking circuit (40), a data interface (46), an ultrasonic wave receiver (36), and an infrared ray receiver (38). An end of the outer casing body (132) extends to form an accommodating cavity (50) for inserting an electronic stylus (110). The electronic stylus (110) comprises a casing body (112), a writing tool (14), a signal transmitter (16), and a power supply (18). A nib (24) of the writing tool (14) extends out of the casing body (112). The signal transmitter (16) is disposed at a position near the nib (24). By means of the technical solution of the present invention, the electronic stylus and the tracker can be combined at will and are convenient to store and carry, and the electronic stylus and the tracker that form a complete set is not easily disordered, thereby bringing convenience to a user.

IPC Classes  ?

• G06F 3/033 - Pointing devices displaced or positioned by the userAccessories therefor

Abstract

The present invention relates to a virtual input method and system, comprising an information reception end for acquiring inputted information, an operation end for input operations, an operation surface on the operation end for inputting, and a control unit for input control. The present invention defines input areas in a virtual input system, assigns one type of input information to each input area, and thereby directly electronifying the input information. The present invention enhances the conventional ultrasonic wave input method, and completes, using a simple method, the electronic process of tracing handwriting using an ultrasonic input method.

IPC Classes  ?

• G06F 3/0354 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
• G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

Disclosed is an ultrasonic wave receiving window (1), which comprises an ultrasonic wave receiving port (11) and a shielding portion (12) for shielding ultrasonic waves; the receiving port (11) has an area of 0.24 a2 to 0.6 a2, where a is the wavelength of an ultrasonic wave, and the receiving port (11) is exactly opposite to an ultrasonic wave receiver (31). The ultrasonic wave receiving window (1) functions to protect the ultrasonic wave receiver (31) from being damaged. By providing an ultrasonic wave receiving window (1) at the front end of the ultrasonic wave receiver (31), the present invention can filter some noise and echoes produced by the ultrasonic wave, improving the reception result of the ultrasonic wave. By using the ultrasonic wave receiving window (1), the ultrasonic wave input device of the present invention makes the input paths more continuous and effectively prevents the production of "fly lines", improving the input result.

IPC Classes  ?

• G06F 3/043 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
• G01S 7/537 - Counter measures or counter-counter-measures, e.g. jamming, anti-jamming
• G01S 7/524 - Transmitters
• G01S 7/526 - Receivers