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Image reading device 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 problem that power saving is not considered.

Active Publication Date: 2020-07-28
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 device and semiconductor device
  • Image reading device and semiconductor device
  • Image reading device and semiconductor device

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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 . Such as 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 cov...

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

The present invention provides an image reading device capable of reducing power consumption. The image reading device is an image reading device including a plurality of image reading chips for reading an image, each of the plurality of image reading chips having: a pixel section including a light-receiving element for photoelectrically converting light from the light; a booster circuit that generates a transfer control signal for transferring charges generated based on photoelectric conversion performed by the light-receiving element; a readout circuit that generates Generates and outputs an image signal based on the transferred charge, and the booster circuit generates while the light receiving element of the pixel unit is receiving the light and based on photoelectric conversion by the light receiving element. The operation is performed while the charge of the image reading chip is being transferred, and the operation is stopped while the reading circuit of the other image reading chip is outputting the image signal.

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 Patents(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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