Loading patent…
AssigneePixart Imaging Inc.
InventorsChuang-Shen Voo, Kuan-Choong Shim, Gim-Eng Chew
Estimating the term…
There is provided a phase shifter circuit of an optical encoder. The phase shifter circuit receives a first signal, a second signal, a third signal and a fourth signal sequentially having a 90-degree phase shift, and includes a first cascaded resistor string, a second cascaded resistor string, a third cascaded resistor string and a fourth cascaded resistor string. The first, second, third and fourth cascaded resistor strings respectively delay the first, third, second and fourth signals by selecting a switch connected at a tap-out node of the first, second, third and fourth cascaded resistor strings to correct phase deviations between incremental signals and an index signal and/or between incremental signals.
A phase shifter circuit of an optical encoder, the phase shifter circuit being configured to receive a first signal, a second signal, a third signal and a fourth signal sequentially having a 90-degree phase shift, the phase shifter circuit comprising:
A phase shifter circuit of an optical encoder, the phase shifter circuit being configured to receive a first signal, a second signal, a third signal and a fourth signal sequentially having a 90-degree phase shift, the phase shifter circuit comprising:
Dependencies are inferred from the claim text.