JPH032773U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the inclination detection device according to the present invention, Fig. 2 is a detailed block diagram of the inclination amount detection unit shown in Fig. 1, and Fig. 3 is a block diagram for explaining this control unit. A schematic diagram, FIG. 4 is a timing diagram when document information is read by a CCD using each control signal, FIG. 5 is a configuration diagram of the document width information generation circuit shown in FIG. 2, and FIGS. 6 a and b are each 7 is a schematic diagram showing the relationship between document information and document width information for a document; FIG. 8 is a configuration diagram of each position information detection circuit shown in FIG. 2; Figure 9 is a timing diagram of each position information detection circuit, Figure 10 is a schematic diagram showing the relationship between document width information and address values for a document, and Figure 11 is a configuration diagram of each tilt amount detection circuit shown in Figure 2. , FIG. 12a is an explanatory diagram showing each signal when detecting the amount of inclination at the left end of the document, FIG. 12b is an explanatory diagram showing each signal when detecting the amount of inclination at the right end of the document, and FIG. 13 is a configuration diagram of each inclination amount determination circuit shown in FIG. 2, FIG. 14 is an explanatory diagram showing each signal corresponding to a document, and FIG. 15 is a configuration diagram of each detection number counting circuit shown in FIG. 2. FIG. 16 is a timing diagram including a tilt amount determination circuit corresponding to the original, each memory, each selector, and an exclusive OR gate;
The figure is a block diagram of each inclination calculation circuit shown in Fig. 2, Fig. 18 is an explanatory diagram showing inclination amount data and calculation examples corresponding to a document, and Fig. 19 is each calculation result judgment circuit shown in Fig. 2. , FIG. 20 is a timing diagram corresponding to the original, FIG. 21 is a configuration diagram of each tilt direction sign determination circuit shown in FIG. 2, FIG. 22 is a timing diagram corresponding to the original, and FIG. 23 is a timing diagram corresponding to the original. FIG. 2 is a block diagram of the tilt direction determination circuit, FIG. 24 is a schematic diagram showing the relationship between the tilt direction and amount of the document, and FIG.
The figure is a schematic diagram for explaining an example of a conventional tilt detecting device, and FIG. 26 is a timing chart for explaining the operation of this tilt detecting device. 201...Reading unit (CCD), 208...Second
Control section (control unit), 301... Document width information generation section (document width information generation circuit), 303, 304
...detection section (position information generation circuit), 305, 30
6... Calculation output section (tilt amount detection circuit), 307,
308... calculation unit (slope amount calculation circuit), 309,
310...Third control section (tilt direction sign determination circuit)
, 311...first determination section (document tilt direction determination circuit), 312, 313...first control section, second determination section (tilt amount determination circuit), 314,315...first control section, third determination section part (detection number counting circuit), 316
, 317...Switching unit (calculation result determination unit), 318
, 319...first storage section (memory), 320,3
22...Second storage unit (memory), 321, 323
...Third storage section (memory), 324, 326...
First selection section (selector), 325, 327... second selection section (selector).

Claims (1)

[Scope of Utility Model Registration Request] (1) A reading unit that reads a document line by line; a document width information generating unit that generates document width information from the document information read by this reading unit; a detection unit that detects positional information indicating the positions of the leading edge and side edges of the document from the document width information obtained by the information generating unit; and positional information of the leading edge and side edges of the document obtained by this detection unit. a first storage section that stores the information, a tilt amount calculated based on the position information stored in the first storage section and the current position information output from the detection section, and a tilt direction obtained by this calculation; a calculation output unit that outputs the calculation output unit; a calculation unit that calculates the current slope amount based on the current slope amount obtained by the calculation output unit and the previous slope amount; a switching section that switches and outputs the amount of inclination up to the present obtained by the calculation output section and the amount of inclination obtained at the present time obtained by the calculation output section; , a third storage section, first and second selection sections that select the inclination amounts stored in the second and third storage sections, the second and third storage sections and the first and second selection sections. a first control section that controls the detection section and the first control section; and a second control section that controls the detection section and the first control section; a third control section that controls the storage section; a first determination section that determines the tilt direction of the document from the tilt amount selected by the first selection section; A tilt detection device, characterized in that the tilt direction of a document is detected, and the amount of tilt is detected by the arithmetic unit. (2) a second determination unit that determines whether a difference between the amount of inclination obtained by the calculation output unit and the amount of inclination selected by the second selection unit exceeds a predetermined value; Based on the determination result of the second determination section, the second
, count the number of inclinations stored in the third storage unit,
and a third determining section that determines which storage section stores a larger number of inclination amounts, the second determining section controlling the first selecting section, and the third determining section controlling the first selecting section. 2. The tilt detection device according to claim 1, wherein the second selection section is controlled by the second selection section, and the second storage section and the third storage section are controlled by the second judgment section and the third judgment section.