Supercharge Your Innovation With Domain-Expert AI Agents!

Arrangement for reading image, and its control method

A control method and image reading device technology, applied in image communication, image data processing, image data processing, etc., capable of solving problems such as increased power consumption, unstable operation, and inability to detect disconnection/connection status of communication unit 122

Inactive Publication Date: 2002-02-20
CANON KK
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the conventional image reading apparatus must inevitably include the CPU 129a for detecting the disconnection / connection state of the communication unit 122 and detecting any abnormal conditions.
Therefore, an image reading apparatus which has a simple structure, does not integrate any CPU, and operates in response to each control command from the host computer 121 transmitted via the communication unit 121 cannot detect the communication unit 122. disconnected / connected state
[0007] Moreover, in such an image reading device with a simple structure that does not integrate any CPU, when the communication unit 122 is disconnected, because the control command from the host computer 121 cannot be received, subsequent operations become become unstable and lead to an increase in power consumption due to continuing to power the communication unit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Arrangement for reading image, and its control method
  • Arrangement for reading image, and its control method
  • Arrangement for reading image, and its control method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0028] Fig. 1 is a block diagram showing the structure of the first embodiment of the image reading device of the present invention, figure 2 is a block diagram showing the structure of the main part of the first embodiment of the image reading apparatus of the present invention. The main structure of the first embodiment of the image reading device of the present invention will refer to Fig. 1 and figure 2 Explained below.

[0029] The image reading device 1 includes a movable optical unit 4 and a circuit board 6 . In the optical unit 4 , reference numeral 24 denotes a light source control circuit for turning on the light source 15 . Said circuit 24 comprises a so-called inverter circuit when a cold cathode tube is used as the light source 15 . Reference numeral 19 denotes an imaging lens for generating an image of reflected light emitted from the light source 15 and reflected by a document on the CCD 20 as a photoelectric conversion element.

[0030] In the circuit board...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

In an image reading apparatus which has an image sensing unit for reading an image, and a communication unit for transferring an image signal read by the image sensing unit to an external apparatus, a detector detects the presence / absence of abnormality of the communication unit, and when the detector detects any abnormality of the communication unit, the image reading apparatus is set in a power saving mode.

Description

technical field [0001] The present invention relates to an image reading device capable of transmitting a read image signal to an external device through a communication unit and a control method thereof. Background technique [0002] A traditional image reading device reads a document image and converts it into an electronic analog image signal, converts the analog image signal into a digital signal, and transmits this digital signal to an external device, for example, a a known device. [0003] Fig. 8 is a block diagram showing an example of a conventional image reading device. [0004] This image reading apparatus 100 turns on the light source 115 installed on the optical unit upon receiving a read command from a host computer 121, and forms an image of reflected light reflected by the document on the image sensor 130, so that An image of one line is read in the main scanning direction, and at the same time, the optical unit is moved in the sub scanning direction by the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06T1/00H04N1/00H04N1/04H04N1/32
CPCH04N1/00885H04N1/32614H04N1/3263H04N1/00236H04N1/00891H04N1/00241H04N1/32641H04N1/00899H04N1/32651
Inventor 南平健一
Owner CANON KK
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com