Patent ID: 8115736
Filing Date: 2012-02-14
Classification: G06F

Abstract:
1. A ball mouse, comprising: a ball; two metallic encoder disks each defining a plurality of through holes; two drive rollers engaged with the ball and transferring motion of the ball to respective encoder disks; two electromagnetic signal generators for generating two electromagnetic signals, and the electromagnetic signal generators each comprising a primary winding; and two induced signal generators for discontinuously generating two induced signals according to respective electromagnetic signals, and the induced signal generators each comprising a secondary winding, the primary winding and the secondary winding composing a transformer; wherein one of the two electromagnetic signals is transmitted to one of the induced signal generators through the plurality of through holes of one of the encoder disks, and the other of the two electromagnetic signals is transmitted to the other of the induced signal generators through the plurality of through holes of the other of the encoder disks.