| 摘要 |
<p>A pointing stick 10 for controlling the positioning, movement and operation of a cursor 209 on the display screen 213. The pointing stick 10 includes a solid structure 20 having a base 24 and a shaft 22 integrally formed with and perpendicular to the base. A film 30 is mounted on the base and a sensor 32 is mounted on the film. The sensor is capable of sensing strains on the base that are indicative of the direction that the shaft is being forced. The sensor functions by using strain sensitive resistors that change resistance based upon the amount of strain that they are subject to. The strain sensitive resistors are coupled to circuitry that will produce signals in response to the strain on the gages. The resulting signals are used to either control the movement of the cursor around the display screen, or to do what is commonly called "clicking" a mouse button for selection of items or dragging of items on the display screen. A cavity 26 may be placed on the base and located circumferentially around the shaft. The recessed area or cavity area may be more flexible than the remaining base structure and typically the film having a sensor mounted thereon may be bonded to the side of the base opposite the cavity. The pointing stick may be used on a keyboard having a home-row of keys locating fingers of a user during typing. The pointing stick can be used to select an Item on a display screen or move a cursor or similar object on the display screen using only one finger of one hand. During this time the remaining fingers of both hands may reside inactive on the home-row of keys. <IMAGE></p> |
