Pointing device offering good operability at low cost

A device and a technology for comparing images, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as moving pointers, and achieve the effect of reducing the amount of calculation

Inactive Publication Date: 2008-01-23
SHARP KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] In the above method, since the motion is detected using the image obtained by the fingerprint sensor as it is, a long operation time calculation is required when calculating the image correlation value, making it impossible to move the pointer (cursor) on the display screen in real time according to the motion of the finger

Method used

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  • Pointing device offering good operability at low cost
  • Pointing device offering good operability at low cost
  • Pointing device offering good operability at low cost

Examples

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no. 1 approach

[0045] Referring to FIG. 1 , the pointing device 100 includes a display part 110 and a fingerprint sensor 120 .

[0046] Display part 110 can be any image display type, can be LCD (liquid crystal display), CRT (cathode ray tube), FED (field emission display), PDP (plasma display panel), organic EL display (organic electroluminescent display ), dot matrix display, etc.

[0047] The fingerprint sensor 120 has a function of detecting a fingerprint of a user's handprint.

[0048] FIG. 2 shows a specific structure of the fingerprint sensor 120 . A capacitive sensor is taken as an example of the sensor of the present invention. However, in the present invention, the fingerprint sensor is not limited to a capacitive type, and may be an optical type, a pressure sensitive type, or the like.

[0049] Referring to FIG. 2 , the fingerprint sensor 120 includes an electrode group 210 and a protective film 200 disposed on the electrode group 210 .

[0050] The electrode set 210 has elect...

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Abstract

A pointing device includes a sensor obtaining image information, and an image producing unit producing a comparison image at predetermined time intervals by lowering a spatial resolution of an image based on the image information obtained by the sensor and increasing a density resolution of the image based on the image information. The device arithmetically obtains a correlation value indicating a correlation between a predetermined region in a first comparison image among the plurality of comparison images produced by the image producing unit and a predetermined region in a second comparison image produced after the first comparison image.

Description

[0001] This non-provisional application is based on Japanese Patent Application No. 2004-281989 filed with the Japan Patent Office on September 28, 2004, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a pointing device that provides instructions to a computer from a finger, and moves a pointer (cursor) on a display screen according to the direction corresponding to the movement of the finger, and specifically relates to a small pointing device capable of continuous input and user comparison. Background technique [0003] For small portable information terminals, especially for mobile phones, such a fingerprint-based pointing device that moves a pointer (cursor) on a display screen according to the direction of motion of a finger has been developed. [0004] Japanese Patent Publication No. 2002-062983 discloses a technology related to the above-mentioned click device technology. It uses a fingerboard...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/033G06F3/0354
CPCG06F2203/0338G06K9/00087G06F3/0317G06F3/03547G06K9/00026G06F3/044G06F3/0446G06V40/1335G06V40/1365
Inventor 汤元学中野贵彦浦田卓治宫田宗一上田淳小笠原司
Owner SHARP KK
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