JPH0378882A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPH0378882A
JPH0378882A JP21628289A JP21628289A JPH0378882A JP H0378882 A JPH0378882 A JP H0378882A JP 21628289 A JP21628289 A JP 21628289A JP 21628289 A JP21628289 A JP 21628289A JP H0378882 A JPH0378882 A JP H0378882A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
signal
speed
outputted
communication speed
lower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP21628289A
Inventor
Toru Ariga
Original Assignee
Seiko Instr Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To easily obtain synchronization with an external device equipped with arbitrary communication speed by calculating values concerning accumulation time and communication speed and outputting a mode signal and a sub scanning period signal.
CONSTITUTION: Based on signals to be outputted from a first signal holding means 8 to hold the accumulation time and a second signal holding means 9 to hold the value concerning the communication speed when a picture signal is outputted to the external device, an arithmetic means 7 judges whether the speed of communication with the external device is higher or lower than the signal output speed of a picture reader. When the communication speed is lower, a read period is calculated and the sub scanning period signal is outputted so that the signal output speed can be made slightly lower than the communication speed. According to the signal to be outputted from the arithmetic means 7, a control means 6 controls the respective parts of the picture reader. Thus, the signal output speed is always set to be lower than the communication speed and stable sub scanning can be executed.
COPYRIGHT: (C)1991,JPO&Japio
JP21628289A 1989-08-23 1989-08-23 Picture reader Pending JPH0378882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21628289A JPH0378882A (en) 1989-08-23 1989-08-23 Picture reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21628289A JPH0378882A (en) 1989-08-23 1989-08-23 Picture reader

Publications (1)

Publication Number Publication Date
JPH0378882A true true JPH0378882A (en) 1991-04-04

Family

ID=16686093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21628289A Pending JPH0378882A (en) 1989-08-23 1989-08-23 Picture reader

Country Status (1)

Country Link
JP (1) JPH0378882A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7742201B2 (en) 1998-11-11 2010-06-22 Canon Kabushiki Kaisha Control method for document scanning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7742201B2 (en) 1998-11-11 2010-06-22 Canon Kabushiki Kaisha Control method for document scanning device

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