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Digital processing principles
Published in John Watkinson, Convergence in Broadcast and Communications Media, 2001
Figure 2.35 shows how a mouse works. The ball is turned in two dimensions as the mouse is moved over a flat surface and a pair of rollers mounted orthogonally (at 90°) operate pulse generators which are sensitive to direction. These may be optical and consist of slotted vanes. Two suitably positioned light beams falling on photocells will produce outputs in quadrature. The relative phase determines the direction and the frequency is proportional to speed. The pulses from the mouse move the cursor across the display screen until it is over one of the available functions. This function can then be selected by pressing a key on the mouse. A trackball is basically an inverted mouse where the operator rotates the ball in two dimensions with the fingertips.
Input Devices
Published in Céline McKeown, Office Ergonomics and Human Factors, 2018
Mice come in a variety of forms, such as the standard mouse, the vertical mouse, and the trackball mouse. In terms of the psychomotor skills required to operate it, the mouse requires a lower skill base for successful use than other input devices, such as the trackball, because there is a close proportional relationship between how far the mouse is moved, the direction in which it is moved, and the speed with which it is moved and with what occurs on the screen in terms of cursor movement.
CVD of superlattice films and their applications
Published in Kwang Leong Choy, Chemical Vapour Deposition (CVD), 2019
VCSELs have many applications. They are used as transmitters for optical fibre communications, gas sensing, miniature optical clocks, thresholdless laser, etc. An application area which was developed later, but has acquired a large market volume, is that of computer mice. A laser mouse with a VCSEL as light source can have high tracking precision combined with low electricity consumption, which is important for battery-powered devices.
TouchWheel: Enabling Flick-and-Stop Interaction on the Mouse Wheel
Published in International Journal of Human–Computer Interaction, 2023
Sunmin Son, Jingun Jung, Auejin Ham, Geehyuk Lee
The concept of TouchWheel can be applied not only to the mouse wheel but also to other rotary input devices, such as a trackball and a smartwatch crown. A trackball allows pointing and scrolling inputs while requiring a small workspace compared to a mouse. However, trackballs are known to perform poorly when the device must be clutched to travel long distances (Accot & Zhai, 1999; Natapov & MacKenzie, 2010). Therefore, enabling flick scrolling on trackballs may resolve the clutching problem. Watch crowns have been used as an alternative to smartwatch touchscreens due to the “fat-finger” problem (Baudisch & Chu, 2009; Siek et al., 2005). However, the small form factor of watch crowns makes it difficult to scroll a long distance. Thus, the flick scrolling functionality may also be useful for smartwatch crowns.
Analysis of natural finger-press motions for design of trackball buttons
Published in Ergonomics, 2019
Xiaopeng Yang, Amir Tjolleng, Wonsup Lee, Seokbong Park, Baekhee Lee, Jineun Jeong, Jinman Kim, Wongi Hong, Kihyo Jung, Heecheon You, Seikwon Park
A trackball has been widely used as a pointing device in moving environments such as cockpits and ships for its better stability and accuracy than a mouse. Unlike the mouse that can be moved on a work surface (Chaparro et al. 1999), the trackball is fixed at the work surface and operated by rolling the ball and pushing buttons with fingers and therefore provides a more stable operation in moving environments (Cockburn et al. 2017; Lin et al. 2007; Thomas 2018; Yau et al. 2011). In addition, the trackball can provide a more accurate selection of a small target than the mouse (error rate = 8.6% for the trackball and 9.4% for the mouse; MacKenzie, Kauppinen, and Silfverberg 2001).