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Reading apparatus and control method

一种读取装置、控制方法的技术，应用在仪器、感应记录载体、电磁辐射感应等方向，能够解决不能获得图像等问题

Active Publication Date: 2018-04-10
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the terminal targeted for reading enters power saving mode during reading, desired images cannot be obtained

Method used

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  • Reading apparatus and control method
  • Reading apparatus and control method

Examples

Experimental program
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Effect test

no. 1 example

[0026] The description given below is about a reading device that reads a reading target object (hereinafter referred to as a self-luminous document) having a self-luminous light-emitting area, such as a mobile terminal screen. There are cases where a self-illuminating document such as a mobile terminal has a function for shifting to a power saving mode after a predetermined period of time elapses to suppress battery consumption. Meanwhile, the reading device turns on the light source of the image sensor unit as a reading mechanism when reading light reflected from an original, but when reading a self-illuminating original, reads by receiving light from the self-illuminating original. Do not light the light source. Therefore, when the mobile terminal transitions to the power saving mode during, for example, reading a self-illuminating original, the light amount of the self-illuminating original will be reduced or turned off, and thus reading will no longer be possible properly...

no. 2 example

[0063] In the first embodiment, when a change in the amount of light of the self-luminous original 401 is detected during reading, error notification or correction of pixel values ​​is performed. In this embodiment, another configuration for performing correction in consideration of transition from the self-illuminating original 401 to the power saving mode and the amount of light starts to decrease until it is turned off will be described for a point different from the first embodiment, The amount of light changes continuously.

[0064] Figure 10 It is a flowchart illustrating reading control processing in the self-illuminating document reading mode of this embodiment. Figure 10 The processing of is realized, for example, by the CPU 109 reading a program stored in the ROM 110 into the RAM 111 and executing the program.

[0065] Figure 10 Steps S1001 to S1011 of Figure 8 Step S801 to step S811 are the same, so their description is omitted. However, in the present embo...

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Abstract

The invention discloses a reading apparatus and a control method. When a reading target object that includes a light emitting region is set as a reading target, the light emitting region is detected by a reading mechanism of a reading unit (203). The reading unit is caused to read the detected light emitting region, and in the reading, a read operation by the reading unit is controlled based on change of an amount of light received from the light emitting region.

Description

technical field [0001] The present invention relates to a reading device and control method for optically reading a reading target object. Background technique [0002] In a conventional reading device such as a scanner device or a copier, reading of an image is performed by light from a light emitting unit being reflected or transmitted at a reading target object such as a document and the reflected light being received by a light receiving unit . [0003] Meanwhile, mobile terminals and ultra-thin PCs equipped with liquid crystal displays and the like are expanding. A technique of reading an image displayed on such a terminal by a scanner device is known (Japanese Patent Laid-Open No. 7-143340). Japanese Patent Laid-Open No. 7-143340 describes a color image scanner that scans without turning on a light source when the display of a read target is a transmissive type. [0004] In a terminal with a display such as a mobile terminal or a slim PC, there is a case where a fun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
CPCG06K7/10584G06K7/10702H04N1/00076H04N1/00822H04N1/00827H04N1/00755H04N1/00758H04N1/00766H04N1/00771H04N1/00774H04N1/0476
Inventor 钵吕重喜古市枫黑田利行国广俊一西田知史
Owner CANON KK
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