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Self-adaptation current regulation and control method in photoelectric navigation device

A navigation device and self-adaptive technology, applied in image data processing, instruments, image data processing, etc., can solve the problems affecting the positioning accuracy of DSP processing modules, increasing the power consumption of image systems, etc., to achieve improved image quality, good image quality, The effect of ensuring positioning accuracy

Inactive Publication Date: 2014-08-27
无锡英斯特微电子有限公司
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AI Technical Summary

Problems solved by technology

When encountering different external environments, the image quality transmitted to the DSP processing module after AD sampling will also be different, and images of different quality will affect the positioning accuracy of the DSP processing module, or increase the power consumption of the entire image system

Method used

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  • Self-adaptation current regulation and control method in photoelectric navigation device
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  • Self-adaptation current regulation and control method in photoelectric navigation device

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0017] Such as figure 2 Shown: In order to adaptively adjust the quality of the image, improve the positioning accuracy, reduce power consumption, and improve the battery life of the mobile device, it includes a DSP processing module, a pixel array connected to the DSP processing module, and an analog-to-digital conversion module; The array is connected to the analog-to-digital conversion module through the readout circuit, the programmable gain amplifier; the current control module is set in the DSP processing module, and the DSP processing module is respectively connected to the readout circuit, the programmable gain amplifier and the analog-to-digital conversion through the current control module Module connection; The adaptive current regulation method comprises the steps:

[0018] a, the DSP processing module controls the pixel array to collect images, a...

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Abstract

The invention relates to a self-adaptation current regulation and control method in a photoelectric navigation device. The self-adaptation current regulation and control method comprises the following steps that first, a DSP processing module controls a pixel array to collect images, a digital image is obtained after AD sampling, and the DSP processing module judges the image quality of the digital image; second, the DSP processing module compares the image quality of the digital image with a preset image quality threshold, and when the image quality of the digital image is not matched with the preset image quality threshold, the DSP processing module regulates a working current value of a reading circuit or a programmable gain amplifier or an analog-digital conversion module through a current control module to made the image quality of the digital image be matched with the preset image quality threshold, wherein the digital image is processed through AD sampling and then transmitted to the DSP processing module. The self-adaptation current regulation and control method in the photoelectric navigation device is convenient to operate, the quality of images can be regulated in an adaptive mode, positioning accuracy is improved, power consumption is reduced, the cruising ability of a mobile device is improved, and the method is wide in application range, safe and reliable.

Description

technical field [0001] The invention relates to a control method, in particular to an adaptive current control method in a photoelectric navigation device, belonging to the technical field of photoelectric navigation control. Background technique [0002] Image acquisition of optical image pointing equipment and optical video equipment, such as wireless optical mouse, optical navigator, etc. This type of equipment needs to capture a series of images through light feedback, and then process the images and give motion vectors. Due to the use of mobile power, in order to extend the duration of a single use, power consumption control processing is required. [0003] Such as figure 1 As shown, it is a block diagram of an existing commonly used image capture system. The DSP processing module controls the exposure, and then opens the data channel: the data in the pixel array is output to the readout circuit, and after the image data is amplified by a programmable gain amplifier, ...

Claims

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Application Information

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IPC IPC(8): G06T1/00
Inventor 肖勇林豹
Owner 无锡英斯特微电子有限公司
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