Optical pointing system
AssigneePixart Imaging Inc.
InventorChia-Cheun Liang
Life of this patent
Estimating the term…
Abstract
There is provided an optical pointing system including at least one reference beacon, an image sensor, a storage unit and a processing unit. The image sensor is configured to capture an image frame containing a beacon image associated with the at least one reference beacon. The storage unit is configured to save image data of at least one object image in the image frame. The processing unit is configured to sequentially process every pixel of the image frame for identifying the object image and real-timely remove or merge the image data, saved in the storage unit, associated with two object images within a pixel range of the image frame thereby reducing the used memory space.
Claims20
An optical pointing system, comprising:
- a single reference beacon;
- an image sensor configured to capture an image frame containing at least a beacon image associated with the single reference beacon;
- a storage unit configured to store image data of at least one object image, which comprises the beacon image, in the image frame;
- and
- a processing unit configured to
- sequentially process every pixel of the image frame within a scan period for identifying the at least one object image, and
- when a current object image is identified next to a previous object image being identified in the image frame within the scan period, calculate an image distance between the current object image and the previous object image to release a part of the image data associated with the at least one object image according to the calculated image distance, wherein the current object image and the previous object image are separated from each other without being connected by any object image in the image frame.
A remote controller, comprising:
- an image sensor configured to capture an image frame containing at least one object image;
- a storage unit configured to store image data of the at least one object image in the image frame;
- and
- a processing unit configured to
- sequentially process every pixel of the image frame within a scan period for identifying the at least one object image, and
- when a current object image is identified within the scan period and a previous object image exists in the image frame, calculate an image distance between the current object image and the previous object image to release a part of the image data associated with the at least one object image according to the calculated image distance, wherein the current object image and the previous object image are separated from each other without being connected by any object image in the image frame.
Dependencies are inferred from the claim text.