Driver circuit for driving a light source of an optical pointing device
A driver circuit for driving a light source of an optical pointing device includes a first transistor coupled to the light source. The driver circuit includes a controller coupled to the first transistor for monitoring a first current through the light source, comparing the first current to a refere...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A driver circuit for driving a light source of an optical pointing device includes a first transistor coupled to the light source. The driver circuit includes a controller coupled to the first transistor for monitoring a first current through the light source, comparing the first current to a reference current, and generating a control signal based on a result of the comparison, wherein the control signal causes the first transistor to change the first current. |
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