JPH04262659A - Image scanner - Google Patents

Abstract

PURPOSE:To realize the image scanner in which an index or a page number is given to a read picture with a simple key entry operation. CONSTITUTION:A moving quantity of a document 17 of a linear image sensor 1 in the longitudinal direction is measured by a rotary encoder 14 and a counter 15. A keyboard 12 has a function of designating the character insert mode, the character insert position and plural inserted characters, and generates a character select signal by a designated number when a counter 15 generates a start pulse SP at a pattern designation position and gives a ROM address of a character pattern designated in the timing to a ROM 13 and also fed to a priority circuit 16 in the same timing as the data from the linear image sensor 1 after shading correction. The priority circuit 16 uses a priority signal SY delayed slightly from the start pulse SP to input the data to an interface 8 in precedence over the data from the ROM 13.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image scanner, and more particularly to an information insertion means.

0002

[Prior Art] Conventionally, modification information added to images read by an image scanner, especially headings and pages, is input by inputting characters and numbers using image processing application software running on the main body of an information processing device to which the image scanner is connected. Editing methods were used.

Conventionally, when reading an image with an image scanner, a system configuration as shown in the schematic diagram of FIG. 1 has been used.

The image information of the document 17 in the figure is obtained by converting the reflected light L of the irradiated light source 9 into an electrical signal SE to the one-dimensional image sensor 1.
Convert with . The electrical signal SE is amplified to a required level by an amplifier 3 such as an operational amplifier. The amplified signal SA is processed by a shading correction circuit 4 comprising a logic circuit for eliminating light unevenness and a memory for storing correction data.

When binary output is required, the output data SC of correction circuit 4 is input to comparator 5, but when multi-value output is required, circuit 5 is not required.

[0006] An interface 8 is an external information processing device 1
It has a circuit for sending a manual control signal for the scanner and the control unit 7 to the control unit 7, and for temporarily storing image data captured by the image sensor and providing it to the information processing device 10 in synchronization with the data collection timing of the information processing device 10. The image read by the image scanner is displayed on a display device in 10. The control unit 7a is composed of a single-chip microcomputer, a logic gate, a driver, etc., which has the function of controlling the entire apparatus based on control information inputted from the outside via an interface 8, that is, a control signal specifying the operation of the image scanner.

[0007] For example, when starting a reading operation of the scanner, first, a "reading start signal" SR from the information processing device main body 10 is received via the interface 8. Next, the light source 9 is turned on by the operation of the control unit 7a, and the head of the one-dimensional image sensor 1 is moved toward the document on the left to an appropriate position according to the specified screen size, and the scanning mechanism is driven by the signal SD of the driver 6. do.

According to the above-mentioned principle, each piece of read image data is written in the form of dot images in the storage device 11 within the information processing machine main body 10. Information was written into the image data by inserting character data in the form of dot images using application software running on the information processing device 10. However, such a method is inconvenient because it requires expensive image/character processing software and takes time to operate.

[0009]

When conventional image scanners are used, it is often necessary to add headings or pages to scanned images, resulting in complicated post-processing.

An object of the present invention is to provide an image scanner that allows characters to be added in advance to be input and inserted into a read image by a simple key input operation.

[0011]

[Means for Solving the Problems] The image scanner of the present invention uses a keyboard as a means for inputting characters, and character patterns corresponding to characters pressed on the keyboard are written in a read-only memory (ROM).

[0012] A rotary encoder detects the position of the one-dimensional image sensor to determine whether the character pattern is sent to the interface circuit or the data of the one-dimensional image sensor based on whether there is a press on the keyboard or the position on the image. Use. These hardwares are added to conventional image scanners.

[0013]

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. As shown in the schematic diagram of FIG. 1, when a character is inserted, the counter 15 starts operating in response to the start signal SS to start reading the image, and the rotary encoder 14 and the counter 1 detect how far the one-dimensional image sensor 1 has moved in the vertical direction of the document 17.
It can be measured at 5. The keyboard 12 is a keyboard with built-in special hardware, and has a character insertion mode, an insertion position (vertical only in this embodiment), and the ability to specify multiple insertion characters, as well as a counter 15 that starts at the specified position on the screen. When the pulse SP is generated, a specified number of character select signals are generated, and at that timing, the ROM address of the specified character pattern is supplied to the RMO 13.

The ROM 13 has a built-in address counter, and is supplied to the priority circuit 16 at the same timing as data from the one-dimensional image sensor 1 after shading correction. In the priority circuit 16, a slight delay is applied based on the start pulse SP, and the priority signal SY generated by the delay circuit D causes the interface 8 to be input with priority over the serial data image sensor 1 data output from the ROM 13, and insert characters are input to the interface. It has a function to kill the one-dimensional image sensor data while it is being input to 8.

[0015]

As described above, the present invention allows users to arbitrarily revise and add pages to images read by a conventional image scanner using simple hardware, and to collectively edit documents and presentation manuscripts.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of an example of a conventional image scanner.

[Explanation of symbols]

1 One-dimensional image sensor 2 Sensor driver 3 Amplifier 4 Shading correction circuit 5 Binarization circuit 6 Scanning mechanism driver 7 (of the entire system) Control unit 8 Interface 9 Light source 10 Information processing device 11 Storage devices 1 to 8 and scanning mechanism are imaged Scanner device 12 (for setting characters and insertion position) Keyboard 13
(Built-in character pattern) ROM 14 Rotary encoder 15 (Screen scanning) Counter circuit 16 Priority circuit

Claims (1)

[Claims] 1. An image scanner comprising: an image sensor, an amplifier, a shading correction circuit, an interface circuit for supplying image data to an information processor, a scanning mechanism for the image sensor, and a control circuit for controlling the operations thereof; A counter circuit that detects the scanning position of the image sensor, a keyboard that sets the character and position to be inserted into the image to be read, and a ROM that stores character pattern data and outputs it to the display device at the scanning timing of the image sensor to be inserted at the position. An image scanner featuring additional features.