Image-capturing device for optical pointing apparatus having large and small area image-sensing units

摘要

An image-capturing device configured for an optical pointing apparatus includes a plurality of image-sensing units arranged adjacently. The plurality of image-sensing units are configured to sense images of a surface and generate sensing signals that are used for evaluating the velocity of the optical pointing apparatus. The image-capturing device is configured to use different image-sensing units arranged differently to sense the surface according to the velocity of the optical pointing apparatus. When the optical pointing apparatus moves at a first velocity, the image-capturing device uses the image-sensing units configured to occupy a smaller area to sense the surface. When the optical pointing apparatus moves at a second velocity, the image-capturing device uses the image-sensing units configured to occupy a larger area to sense the surface. The first velocity is lower than the second velocity.

主权项

1. An image-capturing device configured for an optical pointing apparatus, comprising:
a plurality of adjacently arranged image-sensing units configured to sense an image of a surface and generate a sensing signal being adapted to evaluate a velocity of the optical pointing apparatus, the plurality of adjacently arranged image-sensing units including at least a first plurality of image-sensing units and a second plurality of image-sensing units, wherein each of the image-sensing units of the first plurality occupy a physical area smaller than a physical area of each of the image-sensing units of the second plurality, and the first plurality being positioned an adjacently separate region from the second plurality; wherein the image-capturing device configures different arrangements of the image-sensing units to sense the image of the surface according to different velocities of the optical pointing apparatus; wherein when the optical pointing apparatus moves at a first velocity, the image-capturing device uses the first plurality of image-sensing units to sense the surface, and when the optical pointing apparatus moves at a second velocity, the image-capturing device uses the second plurality of image-sensing units to sense the surface, wherein the first velocity is lower than the second velocity, and wherein within the plurality of adjacently arranged image-sensing units, the first plurality of image-sensing units are positioned in a middle region and the second plurality of image-sensing units are positioned in a circumambient region.