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Image reading apparatus and semiconductor device

An image reading device and image reading technology, which are applied in semiconductor devices, image communication, electric solid state devices, etc., can solve the problems that power saving is not considered

Active Publication Date: 2018-01-05
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the image reading device described in Patent Document 1, power saving other than stopping the output operation is not considered, and there is room for improvement.

Method used

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  • Image reading apparatus and semiconductor device
  • Image reading apparatus and semiconductor device
  • Image reading apparatus and semiconductor device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0050] 1-1. Structure of compound machine

[0051] figure 1 It is a perspective view showing the appearance of the multi-function peripheral 1 . like figure 1 As shown, the multifunction peripheral 1 integrally includes a printer unit (image recording device) 2 as a main body, and a scanner unit (image reading device) 3 as an upper unit provided above the printer unit 2 . Additionally, in the following, the figure 1 In the description, the front-rear direction is referred to as the X-axis direction, and the left-right direction is referred to as the Y-axis direction.

[0052] On the other hand, if figure 1 As shown, the printer unit 2 is provided with: a conveyance unit (not shown) that conveys a single recording medium (printing paper or cut sheet) along the conveyance path; The printing part (not shown) that implements printing process on the recording medium; the operation part 63 of the panel form that is arranged on the front surface; ); the device housing 65 coveri...

no. 2 approach

[0137]Hereinafter, with respect to the multifunction peripheral 1 of the second embodiment, the same reference numerals are assigned to the same constituent elements as those of the first embodiment, and overlapping descriptions with the first embodiment are omitted, and the differences from the first embodiment are mainly described. .

[0138] Since the structure of the compound machine 1 of the second embodiment is different from that of the first embodiment ( Figure 1 ~ Figure 4 ) are the same, so illustration and description thereof are omitted. Furthermore, since the functional block diagram of the scanner unit (image reading device) 3 in the second embodiment is different from that in the first embodiment ( Figure 5 ) are the same, so illustration and description thereof are omitted. In addition, since the functional block diagram of the image reading chip 415 in the second embodiment is different from that in the first embodiment ( Figure 6 ) are the same, so illu...

no. 3 approach

[0163] Hereinafter, with respect to the multifunction peripheral 1 of the third embodiment, the same reference numerals are attached to the same constituent elements as those of the first embodiment or the second embodiment, and descriptions that overlap with those of the first embodiment or the second embodiment are omitted. The content different from the first embodiment or the second embodiment will be described.

[0164] Since the structure of the compound machine 1 of the third embodiment is different from that of the first embodiment ( Figure 1 ~ Figure 4 ) are the same, so the illustration and description are omitted. Furthermore, since the functional block diagram of the scanner unit (image reading device) 3 in the third embodiment is different from that in the first embodiment ( Figure 5 ) are the same, so illustration and description thereof are omitted.

[0165] Figure 15 It is a functional block diagram of the image reading chip 415 in the third embodiment. ...

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PUM

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Abstract

An image reading apparatus capable of achieving low electricity consumption includes a plurality of image reading chips for reading images. Each of the plurality of image reading chips includes, a pixel that includes a light receiving element which receives light and performs photoelectric conversion; a voltage boosting circuit that generates a transmission control signal for transmitting electriccharges which are generated on the basis of the photoelectric conversion; and a reading circuit which generates an image signal on the basis of the electric charges which are transmitted. The voltageboosting circuit operates during a period in which the light receiving element receives the light and during a period in which the electric charges that are generated on the basis of the photoelectric conversion which is performed by the light receiving element, and stops an operation during a period in which the reading circuits of the other image reading chips output the image signals.

Description

technical field [0001] The present invention relates to an image reading device and a semiconductor device. Background technique [0002] An image reading device (scanner, etc.) using a contact image sensor, a copier, a multifunction printer, etc., in which a printing function is added to the image reading device have been developed. As a contact image sensor used in an image reading device, a structure using a photodiode provided on a semiconductor substrate is used. An image reading device such as a scanner has a plurality of sensor chips in which a plurality of pixel units having one or more photodiodes are arranged side by side in one direction. [0003] For example, Patent Document 1 discloses an image reading device in which photoelectric conversion signals are sequentially read from a plurality of sensor chips, and each sensor chip reads only after a predetermined time from the start of reading to the end of reading. The output operation can be performed during the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00H04N1/031
CPCH01L27/14678H04N1/00904H04N25/78H04N1/028H04N25/75H04N1/00896H04N1/19594H04N2201/0081
Inventor 铃木孝文
Owner SEIKO EPSON CORP
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