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Optical navigation device and its trajectory smoothing method

A technology of optical navigation and trajectory smoothing, which is applied in the direction of instruments, electrical digital data processing, and input/output process of data processing, etc., and can solve problems affecting user operations, etc.

Active Publication Date: 2016-08-10
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This jagged trajectory will obviously affect the user's operation in subtle operations

Method used

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  • Optical navigation device and its trajectory smoothing method
  • Optical navigation device and its trajectory smoothing method
  • Optical navigation device and its trajectory smoothing method

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Embodiment Construction

[0027] In order to make the above and other objects, features and advantages of the present invention more apparent, the following will be described in detail with reference to the accompanying drawings. In the description of the present invention, the same components are denoted by the same symbols, and will be described in advance here.

[0028] Please refer to Figure 2A and 2B as shown, Figure 2A A schematic diagram showing an optical navigation device according to an embodiment of the present invention; Figure 2B A block diagram of an optical navigation device of an embodiment of the present invention is shown.

[0029] The optical navigation device 1 includes a casing 10 , a light source 11 , an image sensor 12 , a processing unit 13 , an output unit 14 , a counting unit 15 and a storage unit 16 . In an embodiment, the optical navigation device 1 may further include a light source control unit 17 for controlling the light source 11 to turn on and off, and the light...

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Abstract

The invention relates to an optical navigation device which comprises an image sensor, a processing unit, a storage unit and an output unit, wherein the image sensor is used for continuously acquiring the image; the processing unit is used for calculating the current displacement according to the image, and comparing the current displacement or cumulative displacement with the threshold value so as to decide the output displacement; the storage unit is used for storing the cumulative displacement; and the output unit is used for outputting the output displacement by a report rate.

Description

technical field [0001] The invention relates to a man-machine interface device, in particular to an optical navigation device capable of improving track smoothness and a track smoothing method thereof. Background technique [0002] Traditionally, an optical mouse is one of the peripheral devices used to interact with a computer system with a display screen. An optical mouse generally has a light source, an image sensor and a processing unit. The light source projects light onto the work surface. The image sensor receives reflected light from the working surface and continuously outputs image frames. The processing unit calculates the displacement of the optical mouse relative to the work surface according to the image frame, and outputs the displacement to the computer system according to a report rate for corresponding control. [0003] However, since there will be noise in the image frame captured by the image sensor, it will be reflected in the displacement calculated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0354
Inventor 黄昱豪高铭璨黄森煌
Owner PIXART IMAGING INC