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Image sensor and optical pointing system

An image sensor and optical pointing technology, applied in the field of image sensors, can solve problems such as inconvenience and lack of suitable structure for general products

Inactive Publication Date: 2012-03-21
ATLAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It can be seen that the above-mentioned existing image sensor and optical pointing system obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.
In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

Method used

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  • Image sensor and optical pointing system
  • Image sensor and optical pointing system

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Embodiment Construction

[0061] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, this invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numbers refer to like elements throughout the specification.

[0062] figure 2 is a diagram of the configuration of the image sensor according to the first exemplary embodiment of the present invention.

[0063] see figure 2, the image sensor 10 of the present invention includes a plurality of pixels 111 to 1NN, which constitute an NxN pixel array (where N is a positive integer). Each pixel (eg, pixel 112 ) has a photocell 1121 , a comparator 1122 and a switch 1123 .

[0064] The...

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Abstract

Provided is an image sensor and optical pointing system using the same. The image sensor has a plurality of pixels, each pixel including a photocell for receiving light and generating an analog signal having a voltage corresponding to a quantity of the received light, a comparator for, in response to a shutter control signal, comparing the analog signal of the photocell with an analog signal of an adjacent pixel to generate a digital signal for movement calculation, or comparing the analog signal of the photocell with a reference voltage to generate a digital signal for shutter control, and aswitch for transferring the digital signal for movement calculation and the digital signal for shutter control in response to a pixel selection signal. The optical pointing system includes a reference voltage generation unit for generating a reference voltage, the image sensor, a signal selector, a movement calculation and shutter control unit.

Description

technical field [0001] The present invention relates to an image sensor, and more particularly, to an image sensor for detecting light and an optical pointing system using the same. Background technique [0002] A conventional image sensor is configured with an NxN array of pixels and obtains a two-dimensional image of a subject. Each pixel of the array produces an analog signal having a voltage corresponding to the brightness of the corresponding image area, and the image sensor outputs N 2 An analog signal generated by each pixel. [0003] figure 1 is a block diagram illustrating the internal structure of a conventional optical pointing system with an image sensor. The optical pointing system includes an image sensor 1, an analog / digital (analog / digital, A / D) converter 2, a pre-filter (pre-filter) 3, an image processor 4 and a shutter control circuit (shutter control circuit) 5. [0004] The image sensor 1 obtains a two-dimensional image of an object and generates and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/335H04N5/353H04N5/369
CPCH04N5/144G06F3/03542G06F3/0383
Inventor 郭锺择郑德暎
Owner ATLAB INC