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Apparatus for controlling the position of a screen pointer with low sensitivity to fixed pattern noise

A pointer position and pattern technology, applied in the input/output process of data processing, instruments, calculations, etc., can solve problems such as being very sensitive to pollution and increasing the cost of photoelectric indicating devices.

Inactive Publication Date: 2009-04-08
AVAGO TECH ECBU IP (SINGAPORE) PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the special packaging container and high-performance laser source will increase the cost of the photoelectric indicating device
Even with these high cost light sources, these optoelectronic indicators can still be very sensitive to defective pixels and / or particulate contamination in the image sensor

Method used

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  • Apparatus for controlling the position of a screen pointer with low sensitivity to fixed pattern noise
  • Apparatus for controlling the position of a screen pointer with low sensitivity to fixed pattern noise
  • Apparatus for controlling the position of a screen pointer with low sensitivity to fixed pattern noise

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Embodiment Construction

[0019] The detailed description now refers to the accompanying drawings, which form a part hereof and in which are shown by way of illustrations specific embodiments in which the invention may be practiced. To this end, directional terms such as "forward", "rearward" and the like are used to refer to orientation in the drawings. Since components of embodiments of the present invention may be positioned in multiple orientations, directional terms are used for purposes of illustration only and are not limiting. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description is not in a limiting sense, and the scope of the invention is defined by the appended claims.

[0020] As noted above in the Background, fixed pattern noise caused by particulate contamination, inhomogeneities in light sources, and manufacturing defects can ne...

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Abstract

An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation includes attenuating fixed pattern noise in the digital images.

Description

technical field [0001] The invention relates to a device for controlling the position of a screen pointer comprising an at least partially coherent light source for illuminating an imaging surface, thereby generating a reflected image. The apparatus includes a navigation sensor for generating a digital image based on the reflected image, performing a motion calculation based on the digital image, and generating motion data based on the motion calculation, wherein the motion data is indicative of the relative motion between the imaging surface and the device, and wherein the motion calculation includes attenuating fixed pattern noise in the digital image. Background technique [0002] The use of manual pointing devices in conjunction with computers and their displays has become very common. Among the various types of pointing devices, one form is the traditional (mechanical) mouse used with a companion mouse pad. Mechanical mice generally include a steel ball with a rubber ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/033G06F3/038
CPCG06F3/03543G06F3/038G06F3/0304
Inventor 谢彤马歇尔·托马斯·迪普
Owner AVAGO TECH ECBU IP (SINGAPORE) PTE LTD