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1. 发明专利

JPH1063852A COIN RECOGNITION DEVICE 失效
公开(公告)号：JPH1063852A
公开(公告)日：1998-03-06
申请号：JP22357996
申请日：1996-08-26
申请人： OKI ELECTRIC IND CO LTD
发明人： WATANABE NAOHIRO , TAKEDA TAKAYUKI
IPC分类号： G06T7/00 , G07D5/00
摘要： PROBLEM TO BE SOLVED: To obtain a low-cost coin recognition device which can accurately recognize a coin with a stain and rust by determining a denomination according to read image data and changing a binarization means for the image data according to the denomination. SOLUTION: A denomination decision part 9 decides the corresponding denomination according to external diameter data outputted from an image read part 8 and outputs denomination data to a binarization part 10. The binarization part 10 sets a threshold value for binarization according to the digital image data outputted from an image input part 8 and also outputs binarized image data by comparing the image data with the threshold value. According to, specially, the denomination data obtained by the image input part 8, the binarization means is changed so that decision data to be recognized is affected by neither a local stain or rust on the surface of the coin nor a difference in uneven pattern information quantity between the top and reverse surface. Consequently, recognition which is always stable can be performed.

2. 发明专利

JPH0573753A SHEET PAPER RECOGNITION PROCESSING METHOD 失效
公开(公告)号：JPH0573753A
公开(公告)日：1993-03-26
申请号：JP1827491
申请日：1991-01-18
申请人： OKI ELECTRIC IND CO LTD
发明人： WATANABE NAOHIRO , SEKIGUCHI TAKETO , SUZUKI KUNIKAZU , SAKAI SHUNJI
IPC分类号： G07D7/00 , G06T1/00 , G07D7/12 , G07D7/20
摘要： PURPOSE:To provide the method which is strong against transverse deviation, skew, or the like of sheet paper and quickly recognizes paper with a high reliability. CONSTITUTION:The almost all surface of paper 1 is read with plural light sources 3a and 3b different by wavelength to obtain picture signals different by levels. Features of correlations between these signals are extracted to obtain a specific feature picture corresponding to the pattern on the surface of sheet paper 1. Next, the feature picture distribution is obtained with the distance from teh center or the centroid of this feature picture as a parameter based on this feature picture. Thus, the feature picture distribution obtained from the feature picture even is not changed in the case of skew of sheet paper 1. Consequently, sheet paper is recognized without an influence of not only positional devication but also skew.

3. 发明专利

JPH04119493A DISCRIMINATOR FOR PAPER SHEET 失效
公开(公告)号：JPH04119493A
公开(公告)日：1992-04-20
申请号：JP23907690
申请日：1990-09-11
申请人： OKI ELECTRIC IND CO LTD
发明人： SAKAI SHUNJI , SEKIGUCHI TAKETO , WATANABE NAOHIRO
IPC分类号： G07D7/00 , G07D7/12
摘要： PURPOSE:To remarkably improve the discrimination accuracy of paper sheet even when temperature fluctuation, etc., occurs by providing a linear light source and a line sensor, and performing discrimination by using the comparison value of signal output at different parts read at the same time. CONSTITUTION:The paper sheet is irradiated with light from the linear light source 11, and the line sensor 13 receives the light at the irradiated different parts of the paper sheet at the same time, and performs photoelectric conversion. A discriminator means 16 compares the signal output in accordance with the different parts detected by the line sensor 13, and compares the comparison value with a reference value, thereby, the discrimination of the paper sheet is performed. Thereby, the comparison value of the signal output at the different parts can be kept constant even when an output value from the line sensor 13 is changed by the temperature fluctuation or dispersion in the print density of the paper sheet which remarkably improves the discrimination accuracy, and it is possible to manage the generation of the reference value for comparison by measured data of required minimum since no influence due to temperature fluctuation and the dispersion in the print density of the paper sheet.

4. 发明专利

JPS63290065A CONTACT TYPE IMAGE SCANNER 失效
公开(公告)号：JPS63290065A
公开(公告)日：1988-11-28
申请号：JP12369487
申请日：1987-05-22
申请人： OKI ELECTRIC IND CO LTD
发明人： KITAGAWA TORU , SAKAI SHUNJI , SUZUKI KUNIKAZU , WATANABE NAOHIRO
IPC分类号： H04N1/028 , H04N1/04 , H04N1/19
摘要： PURPOSE:To simplify circuit constitution by respectively controlling the clocks of charge coupled device CCD image sensors and processing analogue signals which an analogue addition circuit facing with the outputs of respective CCD image sensors is simplified. CONSTITUTION:With respectively driving the clock pulses of plural CCD image sensors 14-1-14-4, output data of respective CCD image sensors 14-1-14-4 can be coupled in an analogue adder 16 without being overlapped. Since a sequencer 19 directly controls the clock pulses and operates respective CCD image sensors 14-1-14-4, analogue signals with a high S/N can be obtained by adding the simple analogue signals. Furthermore, output data of the respective CCD image sensors 14-1-14-4 are directly analogue-added, whereby the transmission loss of the signals can be reduced. Thus, circuit constitution can be simplified.

5. 发明专利

JPS63290063A CONTACT TYPE IMAGE SCANNER 失效
公开(公告)号：JPS63290063A
公开(公告)日：1988-11-28
申请号：JP12369287
申请日：1987-05-22
申请人： OKI ELECTRIC IND CO LTD
发明人： KITAGAWA TORU , SAKAI SHUNJI , SUZUKI KUNIKAZU , WATANABE NAOHIRO
IPC分类号： H04N1/028 , H04N1/04 , H04N1/19
摘要： PURPOSE:To simplify a signal processing by respectively controlling the clock pulses of plural charge coupled device CCD image sensors. CONSTITUTION:The clock pulses phi1-phi4 of the plural CCD image sensors 14-1-14-4 which have been disposed in a string are respectively controlled, and the output data can be coupled without being overlapped. Consequently, the data processing of an A/D converter 18 and the like can be processed in a same way as the operation of the image sensors 14-1-14-4 single bodies. Thus, a signal processing scale can be reduced and simplified.

6. 发明专利

JPS6320954A READING SENSOR 失效
公开(公告)号：JPS6320954A
公开(公告)日：1988-01-28
申请号：JP16472986
申请日：1986-07-15
申请人： OKI ELECTRIC IND CO LTD
发明人： SAKAI SHUNJI , YAMADA SATORU , TAKAHASHI ATSUSHI , WATANABE NAOHIRO
IPC分类号： H04N1/00 , H04N1/028
摘要： PURPOSE:To improve the performance of the titled sensor by constituting an illumination system, a rod lens array, and a photodetecting part inside a cylindrical transparent glass which rotates at the same speed with the transferring speed of an original to prevent dusts from sticking to the rod lens array and others and to maintain a constant quantity of receiving light. CONSTITUTION:The cylindrical transparent glass 12 sandwiches the original 1 jointly with a roller 7 being drive by a motor through gears 13 and 14. The circumferential speed of the roller 7 and that of the glass 12 are made equal. A base 15 fixed at the side wall of the device is inserted in a cylindrical transparent glass 12, and the illumination system 4, the rod lens array 3, and the photodetecting part 5 equipped with a photodetecting element array 6, are fixed on the base 15. The light beams emitted from the illumination system 4 transmit through the cylindrical transparent glass 12, and illuminate the original 1. The reflecting light beams are made form an image on the photodetecting element array 6 on the photodetecting part 5 by the rod lens array 3. A lead wire to the reading sensor is drawn out of the cylindrical transparent glass 12 running along the base 15.

7. 发明专利

JPS62292069A COLOR IDENTIFICATION DEVICE 失效
公开(公告)号：JPS62292069A
公开(公告)日：1987-12-18
申请号：JP13493086
申请日：1986-06-12
申请人： OKI ELECTRIC IND CO LTD
发明人： YAMADA SATORU , SAKAI SHUNJI , TAKAHASHI ATSUSHI , WATANABE NAOHIRO
IPC分类号： H04N1/028 , H04N1/04 , H04N1/46 , H04N1/48
摘要： PURPOSE:To execute color identification having high reliability especially to temperature and humidity by separating a monochromatic light from plural monochromatic light sources which are reflected or transmitted by the object to be identified into the corresponding monochromatic light component and identifying the color of the object to be identified by means of separation output. CONSTITUTION:A red LED5a is made pulse lighting by a drive circuit 10a and a green LED5b is made pulse lighting by a drive circuit 10b. The light beams are reflected by the original of the object to be identified and converted into an electric signal in a light receiving element 8. The output of the element 8 is separated into red component and green component in a switch circuit 12 and moreover integrally amplified in integration circuits 13a and 13b. Next it is converted into an amplitude signal by sample and hold circuits 14a and 14b and outputted to an external circuit (not shown in figure), so that the red component and the green component of the original can be read. Thus the color identification having high reliability especially to temperature and humidity can be executed.

8. 发明专利

JPS62291523A HUE DISCRIMINATION SENSOR 失效
公开(公告)号：JPS62291523A
公开(公告)日：1987-12-18
申请号：JP13492986
申请日：1986-06-12
申请人： OKI ELECTRIC IND CO LTD
发明人： SAKAI SHUNJI , YAMADA SATORU , TAKAHASHI ATSUSHI , WATANABE NAOHIRO
IPC分类号： G01J3/51
摘要： PURPOSE:To obtain a small-sized sensor requiring no memory and receiving no adverse effect due to the oblique running of a manuscript, by simultaneously receiving reflected lights from the parts to be inspected of the manuscript by two light receiving elements. CONSTITUTION:The light from red LED 2 passes through a cylindrical lens 7 and an aperture 14 to irradiate the surface to be inspected of a manuscript 1 and the reflected light passes through the aperture 14 and a red-pass filter 8 to be received by a light receiving element 9. The light from green LED 3 passes through the lens 7, the aperture 14 and a green-pass filter 10 to be received by a light receiving element 11. By this method, the reflected light from the respective points of the surface to be inspected of the manuscript 1 are simultaneously received by the elements 9, 11. Therefore, not only a memory for holding a signal becomes unnecessary but also it is unnecessary to accurately perform the adjustment of the distance between two inspection points and the control of the moving speed of the manuscript and, further, even when the manuscript runs obliquely, hue discrimination can be performed without trouble.

9. 发明专利

JPS62270396A ELECTRONIC BLACKBOARD 失效
公开(公告)号：JPS62270396A
公开(公告)日：1987-11-24
申请号：JP11362786
申请日：1986-05-20
申请人： OKI ELECTRIC IND CO LTD
发明人： TAKAHASHI ATSUSHI , SAKAI SHUNJI , YAMADA SATORU , WATANABE NAOHIRO
IPC分类号： B43L1/04

10. 发明专利

JPS6293621A SPECTROSCOPIC MEASURING APPARATUS 失效
公开(公告)号：JPS6293621A
公开(公告)日：1987-04-30
申请号：JP23425385
申请日：1985-10-19
申请人： OKI ELECTRIC IND CO LTD
发明人： TAKAHASHI ATSUSHI , YAMADA SATORU , WATANABE NAOHIRO
IPC分类号： G01J3/02 , G01J3/28
摘要： PURPOSE:To obtain a small-sized, light weight apparatus excellent in operability, by using a light-receiving element array consisting of a plurality of light- receiving elements each respectively individually receiving dispersed light corresponding to each wavelength. CONSTITUTION:The light L0 emitted from a beam source 11 passes a filter 15 for cutting higher harmonics and subsequently passes through slits 31, 33 to be converted to fine parallel beam which is, in turn, displayed by a diffraction grating 35 to be respectively diffracted to different directions on the basis of a wavelength while diffracted beams come incident to a beam receiving element array 37 constituted by arranging small light-receiving picture elements such as CCD in a row in an array form. Because the angle of diffraction of diffracted beams is uniquely determined by the wavelength, if each light-receiving element constituting the beam receiving element array 37 is allowed to preliminarily correspond to the wavelength of the diffracted beams and spectroscopic measurement is performed, the relation between the wavelength of beam and luminous intensity can be investigated.

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