JPH03473U

JPH03473U -

Info

Publication number: JPH03473U
Application number: JP6015589U
Authority: JP
Priority date: 1989-05-24
Filing date: 1989-05-24
Publication date: 1991-01-07

Description

[Brief explanation of the drawing]

第１図は本考案を適用した複写機の一実施例を
示すブロツク図、第２図は本考案による傾き量検
出ユニツトの具体的構成例を示すブロツク図、第
３図と第４図は夫々本考案の実施例における原稿
走査位置と各部の信号波形を示す図、第５図は原
稿情報発生回路の内部構成例を示す図、第６図ａ
，ｂ及び第７図は上記原稿情報発生装置の動作を
説明する信号波形図、第８図は本考案の位置情報
検出回路の内容構成例を示すブロツク図、第９図
は上記位置情報検出回路の動作を説明する信号波
形図、第１０図は原稿走査位置とアドレスとの関
係を示す図、第１１図は傾き量検出回路のブロツ
ク図、第１２図ａ，ｂは夫々上記傾き量検出回路
の動作を説明する信号波形図、第１３図は傾き量
演算回路のブロツク図、第１４図は傾き量演算回
路における原稿に対応した傾き量データ及び演算
例を示す図、第１５図は傾き方向符号判定回路の
ブロツク図、第１６図は上記傾き方向符号判定回
路の信号波形図、第１７図は原稿傾き方向とキヤ
リー信号との関係を示す図、第１８図は本考案の
原稿傾き検出装置の動作を説明するフローチヤー
ト図、第１９図及び第２０図は従来の原稿斜行検
知装置の概要構成図とその動作を説明する信号波
形図である。１０１……ＣＣＤ、１０２……Ａ／Ｄ変換器、
１０３……シエーデイング補正ユニツト、１０４
……画像処理ユニツト、１０５……傾き量検出ユ
ニツト、１０６……表示制御ユニツト、１０７…
…表示ユニツト、１０８……制御ユニツト、１１
１，１１２，１１６，１１８，２０３……インバ
ータブロツク、１１３，１１４，１１５，１１７
，１３５，１３６……加算器、１１９，１２０…
…セレクタ、１３１，１３２，１３３，１３４，
５０５，５０７，５０９……シフトレジスタ、２
０１……原稿情報発生回路、２０２，２０４……
位置情報検出回路、２０５−１，２０５−２……
傾き検出ブロツク、２０７，２１０，２１２，２
１５，５０１……メモリ、２０８，２１３……傾
き量検出回路、２０９，２１４……傾き量演算回
路、２１１，２１６……傾き方向符号判定回路、
１５２，５０２，５０８，５１０……ＯＲゲート
、１５１，５０３……インバータ、５０４……Ａ
ＮＤゲート、８０１……カウンタ、１５３，１５
４，８０２，８０３，８０４，８０５……フリツ
プフロツプ。 Fig. 1 is a block diagram showing an embodiment of a copying machine to which the present invention is applied, Fig. 2 is a block diagram showing a specific configuration example of a tilt amount detection unit according to the present invention, and Figs. 3 and 4 respectively. A diagram showing the document scanning position and signal waveforms of each part in the embodiment of the present invention, FIG. 5 is a diagram showing an example of the internal configuration of the document information generation circuit, and FIG. 6a
, b and FIG. 7 are signal waveform diagrams illustrating the operation of the above document information generating device, FIG. 8 is a block diagram showing an example of the content and configuration of the position information detection circuit of the present invention, and FIG. 9 is the above position information detection circuit. 10 is a diagram showing the relationship between document scanning position and address, FIG. 11 is a block diagram of the tilt amount detection circuit, and FIGS. 12a and 12b are respectively the above tilt amount detection circuits. 13 is a block diagram of the tilt amount calculation circuit, FIG. 14 is a diagram showing tilt amount data and calculation examples corresponding to the document in the tilt amount calculation circuit, and FIG. 15 is a diagram showing the tilt direction. A block diagram of the sign determination circuit, FIG. 16 is a signal waveform diagram of the tilt direction sign determination circuit, FIG. 17 is a diagram showing the relationship between the document tilt direction and the carry signal, and FIG. 18 is the document tilt detection device of the present invention. FIGS. 19 and 20 are a flowchart diagram illustrating the operation of the conventional document skew detection device, and a signal waveform diagram illustrating its operation. 101...CCD, 102...A/D converter,
103...shading correction unit, 104
...Image processing unit, 105...Tilt amount detection unit, 106...Display control unit, 107...
...Display unit, 108...Control unit, 11
1,112,116,118,203...Inverter block, 113,114,115,117
, 135, 136... Adder, 119, 120...
...Selector, 131, 132, 133, 134,
505, 507, 509...shift register, 2
01... Manuscript information generation circuit, 202, 204...
Position information detection circuit, 205-1, 205-2...
Tilt detection block, 207, 210, 212, 2
15,501...Memory, 208,213...Inclination amount detection circuit, 209,214...Inclination amount calculation circuit, 211,216...Inclination direction sign determination circuit,
152,502,508,510...OR gate, 151,503...Inverter, 504...A
ND gate, 801...Counter, 153, 15
4,802,803,804,805...flipflop.

Claims

[Scope of Utility Model Registration Claim] If the manuscript, etc. and the exposure reading device move relative to each other,
In a reading device that reads information on a document etc. via a photoelectric conversion element, a document width generating means generates document width information based on the document etc. information, and a leading edge and a side edge portion of the document etc. based on the document width information. a position detecting means for generating position information indicating a position; a first memory for storing position information sequentially obtained from the position detecting means; a first calculation means that calculates the amount of tilt of the document etc. from the position information obtained and generates a tilt direction code at that time; and a second memory that stores the current amount of tilt obtained by the first calculation means and a second memory described below. a second calculation means for calculating the amount of inclination up to the present time from the amount of inclination stored in the second calculation means; a second memory for storing the amount of inclination obtained by the second calculation means; and the first calculation means. According to the change in the tilt direction sign obtained by
a control means for controlling the memory of the document; and a determination means for determining which of the tilt direction codes corresponding to the leading edge and the side edge of the document, etc. obtained by the first calculating means changes first. A device for detecting the inclination of a document, etc., comprising: