JPS61208358A - Color reader - Google Patents

Abstract

PURPOSE:To attain color reading with a simple constitution by lighting sequentially three kinds of fluorescent lights (red, green, blue) synchronizing with the scanning of a CCD sensor of a camera scanner and using the camera scanner to read a color original irradiated by the lighting of the three kinds of fluorescent lights so as to read the color information of the color original. CONSTITUTION:The three kinds (red, green, blue) of fluorescent lights 1-3 irradiate sequentially the light of red, green and blue onto a color original 4. A CCD sensor 6 is assembled to the camera type scanner 5 and the color original 4 irradiated sequentially to the fluorescent lights 1-3 by the scanning of the CCD sensor 6 is read to obtain color information of the color original 4 subject to color separation. The color information is sent to a personal computer 7. A lighting device 8 receives the 2-bit signal synchronizing with the scanning of the CCD sensor 6 from the camera scanner 5 and decodes the signal to flicker sequentially the fluorescent lights 1-3.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a color reading device using a camera-type scanner incorporating a CCD sensor.

<Prior Art> Recently, camera-type black-and-white scanners have been used that read a black-and-white document with a camera incorporating a CCD sensor and send this image information to a personal computer via an R3232C interface or the like.

This camera-mounted black-and-white scanner is as shown in Figure 9.
A document 103 illuminated by two incandescent bulbs 101 and 102 is read by a camera scanner 104 incorporating a CCD sensor, and the output of the CCD sensor is converted into ADi and sent to a personal computer 105 via an R3232C interface. In this case, an incandescent bulb is used as a light source for irradiating the document, and as a matter of course, color information on the document cannot be read.

<Object of the Invention> The present invention has been made in view of the above-mentioned achievements, and its object is to provide a color reading device using a camera-type scanner that can read color information of a color document. be.

<Structure of the Invention> The present invention includes three types of fluorescent lamps that sequentially emit red, green, and blue light onto a color document, and a CCD sensor, and the CCD sensor illuminates the color document with the fluorescent lamp. It is characterized by comprising a camera-type scanner that reads a document and obtains color information of the color-separated color document, and a lighting device that sequentially blinks the three types of fluorescent lights in synchronization with the scanning of the CCD sensor. shall be.

<Example> An embodiment of the present invention will be described below.

FIG. 1 shows the basic configuration of a color reading device.

Three types of fluorescent lamps 1, 2.3 of red, green, and blue sequentially irradiate the color document 4 with red, green, and blue light.

The camera scanner 5 includes a CCD sensor 6,
By scanning the CCD sensor 6, the color original 4 that is sequentially illuminated by the fluorescent lamp 152.3 is read, and color information of the color original 4 that has been color-separated is obtained. This color information is
It is sent to the personal computer 7. The lighting device 8 is
By receiving a 2-bit signal synchronized with the scanning of the CCD sensor 6 from the camera scanner 5 and decoding this signal, the fluorescent lamp 1. 2. 3 flashes in sequence. By the above 2-bit signal, for example, when bins Co and C+ are both "0", all fluorescent lamps 1, 2, and 3 are turned off,
When bit co is "1" and bit C1 is "0", the red fluorescent light l lights up, and when bit Co is 0", bit CI is 6.
1'', green fluorescent lamp 2 lights up and bits Co, C+
When both are "l", the blue fluorescent lamp 3 lights up.

FIG. 2 shows a detailed configuration of the above color reading device in which a CCD line sensor is used as the CCD sensor 6 of the camera scanner 5.

The part surrounded by the broken line constitutes the camera-type scanner 5a. The CCD line sensor 6a detects red, red, and
A color original 4 sequentially illuminated by green and blue fluorescent lamps 1, 2.3 is read through a lens 9. The amplifier 10 is
The signal from the CCD line sensor 6a at this time is amplified, the AD conversion circuit 11 converts the signal from the amplifier 10 into digital data, and outputs color data of the color-separated color original 4. The RAM 12 is the AD conversion circuit 11
Stores color data from.

The CPU 13 provides a signal for scanning the CCD line sensor 6a to the CCD drive unit W14, and also provides a signal for scanning the CCD line sensor 6a.
In synchronization with the scanning of the CD line sensor 6a, the fluorescent lights 1.2.
A signal for sequentially blinking 3 is given to the lighting device 8. Furthermore, the CPU 13 transmits the color data from the RAM 12 to the personal computer 7, and also provides a signal to the mechanical drive device 15 for mechanically driving the CCD line sensor 6a. The lighting device 8 receives a signal from the CPU 13 and sequentially blinks the red, green, and blue fluorescent lamps 1, 2, and 3.

First, when the start switch 16 provided on the personal computer 7 is pressed, the CCD line sensor 6a starts moving from a predetermined position. This CCD
Simultaneously with the movement of the line sensor 6a, the red, green, and blue fluorescent lights 1.2.3. A control signal is sent so that the fluorescent lamps 1, 2, and 3 are turned on in sequence, and the fluorescent lamps 1, 2, and 3 are turned on in sequence. A signal output from the CCD line sensor 6a in synchronization with the control signal is amplified by an amplifier 10, further converted to digital data by an AD conversion circuit 11, and the obtained color data is stored in the RAM 12. This RAM 12 stores color data for each line scanned by the CCD line sensor 6a. R
The color data stored in AM12 is shared between CPU13 and R.
The data is sent to the personal computer 7 via the 3232C interface 17. Figure 3 shows CCD line sensor 6
Scanning of a, flashing of fluorescent lights 1, 2.3, and AD conversion circuit 1
1 shows the relationship between each operation timing of color data output of No. 1.

Figure 4 shows the CC of the camera scanner 5 (Figure 1) mentioned above.
A detailed configuration when a CCD area sensor is used as the D sensor 6 is shown. Lens 18. CCD area sensor 6b
, AD conversion circuit 19, interface 20, and control circuit 21 constitute the camera-type scanner 5b. CCD
The area sensor 6b two-dimensionally reads, through a lens 18, a color original 4 that is sequentially illuminated by red, green, and blue fluorescent lamps 1, 2.3. The AD conversion circuit 19 converts the signal from the CCD area sensor 6b into a digital signal,
Color data of the color-separated color original 4 is obtained. This color data is sent to a personal computer (not shown) via the interface 20. Control circuit 21
The lighting device 8 controls the scanning of the CCD area sensor 6b and sends a signal to sequentially blink the fluorescent lamps 1, 2 and 3 in synchronization with the scanning of the CCD area sensor 6b.
give to FIG. 5 shows the relationship between the operation timings of the above-described scanning of the CCD area sensor 6b, lighting of the fluorescent lamps 1, 2, 3, and color data output of the AD conversion circuit 19.

FIG. 6 shows the external configuration of the camera-type scanner 5, in which a lens 9 or 18 is provided on the front, and an R3 is provided on the left side in the figure.
A 232C interface 22 and a key panel surface (not shown) are provided, and a data cassette 23 containing a pantry puncture is provided on the right side. Furthermore, a shutter 24 and an exposure adaptation lamp 25 are provided on the top surface. Figure 7 shows a camera-type scanner 5, red, on a special setting table 26.
A state in which green and blue fluorescent lights 1.2.3 and a color original 4 are set is shown.

FIG. 8 shows another embodiment of red, green, and blue fluorescent lamps, including a red fluorescent lamp 27, a green fluorescent lamp 28, and so on. A blue fluorescent lamp 29 is formed into an annular shape, each having a different diameter, and this fluorescent lamp 27.28
．． 29 are arranged coaxially to constitute a light source for illuminating a color original. In this case, the size of the light source can be reduced and the intensity of the irradiated light can be increased.

<Effect of the invention>　゛ As explained above, in the present invention, red is used.

Three types of fluorescent lamps, green and blue, are emitted sequentially in synchronization with the scanning of the CCD sensor of the camera-type scanner, and the color document illuminated by the light emission of these three types of fluorescent lamps is read by the camera-type scanner. , the color information of a color document can be read with a camera-type scanner, and color reading is possible with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the invention, FIG. 2 is a block diagram showing a second embodiment of the invention, FIG. 3 is an operation timing chart of the second embodiment of the invention, and FIG. The figure is a block diagram showing a third embodiment of the present invention, FIG. 5 is an operation timing chart of the third embodiment of the present invention, and FIG. 6 is a diagram of the third embodiment of the present invention. 7 is an external perspective view of a color reading device according to an embodiment of the present invention, FIG. 8 is a plan view showing a light source of another embodiment of the present invention, and FIG. 9 is a perspective view of a conventional example. FIG. 2 is a block diagram showing the configuration. 1.2.3...Fluorescent light 4...Color original 5...° camera type scanner 6...CCD sensor 8...Lighting device 27.28.29...Fluorescent light

Claims (2)

[Claims] (1) It has three types of fluorescent lamps that sequentially emit red, green, and blue light onto a color document, and a CCD sensor.The CCD sensor reads the color document illuminated by the fluorescent lamps and colors it. A color reading device comprising: a camera-type scanner that obtains color information of the disassembled color original; and a lighting device that sequentially blinks the three types of fluorescent lights in synchronization with the scanning of the CCD sensor. Device. (2) The color reading device according to claim 1, wherein the three types of fluorescent lamps have annular shapes having different diameters and are coaxially arranged.