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91. 发明专利

JPH03188306A APPARATUS FOR VISUAL INSPECTION OF MOUNTING BOARD 失效
公开(公告)号：JPH03188306A
公开(公告)日：1991-08-16
申请号：JP32910389
申请日：1989-12-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SEKITO TAKUMI , TOBA HIROKADO , SANNOMIYA KUNIO , IKETANI KAZUTOSHI
IPC分类号： G01B11/24 , G06T1/00 , H05K13/08
摘要： PURPOSE:To inspect positional shift regardless of the warpage of a board by calculating a floating threshold value from the peak of the frequency distribution of the heights of the mounting parts on the board and respectively comparing an area at a point higher than the floating thresholed value and the difference between two peaks of the frequency distribution with a reference threshold value. CONSTITUTION:The height of the part 22 mounted on a printed circuit board 21 and the surface height of the printed circuit board 21 are measured by a three-dimensional coordinates measuring part 23. A mask data memory 31 is referred to with respect to the obtained height data and the frequency distribution of the data is prepared at every mask by a frequency distribution calculation circuit 26 while the peak of the frequency distribution is calculated by a peak calculation circuit 27 and the average value of two heights where the frequency distribution becomes a peak is set to a floating threshold value by a floating threshold value calculation circuit 28. An area at a point higher than the floating threshold value is calculated by an area count circuit 29 and the difference between two heights where the frequency distribution becomes a peak is calculated by a subtractor circuit 30. These values are compared with a reference threshold value to judge quality.

92. 发明专利

JPH03148050A MOUNTING-BOARD INSPECTING APPARATUS 失效
公开(公告)号：JPH03148050A
公开(公告)日：1991-06-24
申请号：JP28703689
申请日：1989-11-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IKETANI KAZUTOSHI , MARUYAMA YUJI , TSUDA YUKIFUMI , SANNOMIYA KUNIO , TOBA HIROKADO
IPC分类号： G01B11/24 , G01N21/88 , G01N21/93 , G01N21/956 , H05K3/34
摘要： PURPOSE:To evaluate the volume of solder directly by measuring the height data of the parts and the entire surface of a soldered region on a printed board, controlling the height data only in a mask which is set at the position of the soldered part by a difference value of the height, and performing cumulative addition. CONSTITUTION:The height data of a part 102 and a soldered part which are mounted on a printed board 101 are operated with an image operating means 114. The height data are cumulatively added only within the mask data from a mask memory means 117 in a solder-amount operating means 115. The cumulatively added height data of the soldered part are compared with the preset reference soldering amount in a judging means 116. Thus the quality of the soldered state of the part is judged. At this time, the changing amount of the height data inputted from a difference computing circuit 305 is computed in the means 115. Whether the height data are cumulatively added in a cumulative addition circuit 306 or not is controlled based on the magnitude of the difference value. Only the excellent height data of the soldered part from which the height data on the board and the parts are removed are cumulatively added, and the quality of the soldered part is judged.

93. 发明专利

JPH0399209A INSPECTION APPARATUS FOR MOUNTING BOARD 失效
公开(公告)号：JPH0399209A
公开(公告)日：1991-04-24
申请号：JP23616089
申请日：1989-09-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MARUYAMA YUJI , IKETANI KAZUTOSHI , TSUDA YUKIFUMI , SANNOMIYA KUNIO , SEKITO TAKUMI
IPC分类号： G01B11/00 , G01B11/24 , G01B11/245 , H05K13/08
摘要： PURPOSE:To detect three-dimensional defects by guiding scattered light obtained by scanning by laser light to a pair of position detecting elements, operating luminance data and height data based on the obtained amount of light, and substituting and outputting the height data according to the luminance data. CONSTITUTION:A printed board 101 on which parts 102 are mounted is moved with a transfer means 103. The upper surface of the board 101 is scanned by laser light 106 from a laser light source 105 through a polygon mirror 107 and an ftheta lens 109. Scattered light obtained by the reflection is converged on position detecting elements 114 and 115 through reflecting mirrors 110 and 111, the lens 109 and the mirror 107. The luminance data and the height data are operated in an image operation means 118 based on the obtained amount of light. The height data are substituted according to the luminance data in an interpolating operation means 119, and the result is outputted. The data are compared with reference height data in a decision operation means 120, and the quality of the mounted state of the component is judged.

94. 发明专利

JPH02168364A IMAGE SIGNAL PROCESSOR 失效
公开(公告)号：JPH02168364A
公开(公告)日：1990-06-28
申请号：JP4372889
申请日：1989-02-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO ATSUHARU , TSUCHIYA HIROYOSHI , SANNOMIYA KUNIO , KODERA HIROAKI , FUJITA MIKIO , KOMIZO SHIGEO
IPC分类号： G06K7/015 , G06K7/10
摘要： PURPOSE:To attain a correct decoding by extracting a bar code area from a scanned image data and decoding it. CONSTITUTION:At the time of executing an expansion processing to the contour data of an input image, (o) is outputted in a position to be clearly considered as a background area, and (o) is expanded in a size (m) by an mXm contraction processing by means of an mXm contraction circuit 6. Consequently, (o) is not lost in the thinning-out contraction of 1/k (1

95. 发明专利

JPH02125384A IMAGE SIGNAL PROCESSOR 失效
公开(公告)号：JPH02125384A
公开(公告)日：1990-05-14
申请号：JP4371289
申请日：1989-02-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUCHIYA HIROYOSHI , YAMAMOTO ATSUHARU , SANNOMIYA KUNIO , KODERA HIROAKI
IPC分类号： G06K7/00 , G06K7/10 , G06T7/00
摘要： PURPOSE:To decode image data wherever and in whatever direction a bar code label is stuck on an input document by detecting the slanting direction of a bar code, and reading the image data of unidirectional scanning out of a storage means in the slanting direction and decoding the image data. CONSTITUTION:A scan window 12 which is larger than mask size for subsequent expansion processing is set and when the contour of a background image is detected in the binary image contour data 11 in the scan window 12, the data in the scan window are cleared to 0. Therefore, 0 data more than one picture element are left even in the subsequent expansion processing and background image data are erased centering on the 0 data by subsequent contraction processing using a large mask. Thus, the bar code and background image are separated and the binary data are read out in the slanting angle direction of the bar code to enable its decoding in whatever direction the bar code label is stuck on the input document.

96. 发明专利

JPH02125383A IMAGE SIGNAL PROCESSOR 失效
公开(公告)号：JPH02125383A
公开(公告)日：1990-05-14
申请号：JP4371189
申请日：1989-02-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUCHIYA HIROYOSHI , YAMAMOTO ATSUHARU , SANNOMIYA KUNIO , KODERA HIROAKI
IPC分类号： G06K7/00 , G06K7/10
摘要： PURPOSE:To enable decoding whatever direction a bar code label is stuck on an input document in by erasing the background image of the bar code except its center area, finding the center and inclination of the bar code, and reading data out of a storage means in the slanting direction of the bar code. CONSTITUTION:An input image signal is stored in a storage means 2 and converted into binary data, which is further converted into contour data; and the contour data is expanded to paint the bar code area out. The output data of expansion processing is contracted at a maximum to such size that the painted-out bar code area does not disappear, thereby erasing the background image. Here, an inclination center arithmetic circuit 7 calculates the inclination and center point of the remaining bar code area data and reads the data out of the storage means 2 in the slanting angle direction; and data interpolation and binary coding are carried out and then a bar code decoding circuit 11 decodes the bar code with the binary data after the interpolation. Consequently, the decoding is enabled wherever the bar code label is stuck on the input document.

97. 发明专利

JPH02114156A INSPECTION DEVICE OF MOUNTED SUBSTRATE 失效
公开(公告)号：JPH02114156A
公开(公告)日：1990-04-26
申请号：JP26843788
申请日：1988-10-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IKETANI KAZUTOSHI , SANNOMIYA KUNIO , TSUDA YUKIFUMI , MARUYAMA YUJI , ARAKI NOBUHIRO , TOBA HIROKADO
IPC分类号： G01N21/88 , G01B11/24 , G01B11/245 , G01N21/93 , G01N21/956 , G01R31/309 , H05K3/34 , H05K13/08
摘要： PURPOSE:To achieve automation of inspection and a higher working efficiency by arranging a printed circuit board, a reflection mirror and an image computation processing section to enable inspection of deficiency concerning a three- dimensional lift and inclination. CONSTITUTION:A printed circuit board 1 on which a components 2 is mounted is scanned entirely with a laser light 6, scattered light obtained by reflection from the substrate 1 is introduced to a position detecting means with a reflection s mirror 10 to detect position of condensing on a position detector 12 varying according to unevenness in height on the substrate 1. Then, a height data of the component 2 mounted on the substrate 1 is computed with an image computation processing section 14 from a position signal. Then, an actually measured height data is compared with a reference height data thereby enabling inspection of deficiency such as three-dimensional lift handily in addition to a two-dimensional deviation of components on the substrate 1.

98. 发明专利

JPH0223488A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPH0223488A
公开(公告)日：1990-01-25
申请号：JP17457988
申请日：1988-07-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANNOMIYA KUNIO , YAMAMOTO ATSUHARU , NAKAZATO KATSUO , TSUCHIYA HIROYOSHI
IPC分类号： G06K7/10
摘要： PURPOSE:To obtain a picture signal train equivalent to the orthogonal scanning of a bar code and to decode the bar code by collating the run length of a read picture signal with a stored run length and fetching the picture signal along the center line of the bar code and having a prescribed pitch. CONSTITUTION:The output of a binary picture signal generating means 1 is stored in a memory 2. The pattern of the train of the run length is coded and stored in a run length code storing means 3. A run length counting means 4 counts the number of continuous white picture elements and creates white run length data, and a fine/heavy width code generating means 5 counts the start position and the end position of the picture elements of the run and informs a pattern area deciding means 6 of the counted result. The decoding means 6 reads the run length code from the storing means 3, compares the counted result with the read run length code, and generates a propriety signal. A pattern area picture signal generating means 7 replaces the signals between the start position and the end position with black picture signals only when the propriety signal informs the means 7 that the compared result is proper. A center line detecting means 8 obtains the least square approximation straight line from a pattern area picture signal and makes the obtained line into the center line, and finally, the picture signal having the prescribed amount of width is fetched from the storing means 2 along the center line and made into the aimed picture signal in an inclined picture signal generating means 9.

99. 发明专利

JPS63155949A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPS63155949A
公开(公告)日：1988-06-29
申请号：JP30425286
申请日：1986-12-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANNOMIYA KUNIO , TSUCHIYA HIROYOSHI , NAKAZATO KATSUO
IPC分类号： H04N1/407 , G06T3/00 , H04N1/40
摘要： PURPOSE:To obtain a picture with less moire and roughness due to uneven density by calculating a dispersion valve with respect to distance of a picture element in a scanning window so as to detect a dot shape with low concentration thereby replac ing the dot shape into that with higher concentration by a preset same number of picture elements. CONSTITUTION:The titled unit is provided with a window scanning means 3 extracting n-set of picture elements at each line sequentially from a line buffer 2, a disconnection discriminating means 4 discriminating the peripheral color Co in the extracted scanning window and whether or not the picture elements in the scanning window are discon nected from the picture elements at the outside of the scanning region and generating a non-connection discrimination signal S4, a replacement request means 5 calculating the variance of picture elements in the scanning windows with respect to distance and generating a replacement request signal S5 when the variance is larger than a prescribed value, a gravity center calculation means 6 generating a gravity position signal S6 of picture elements in the scanning window, a pattern generating means 7 generating an arrangement pattern whose dot pattern is more concentrated by using the peripheral color Co and the gravity center position signal S6 and a buffer replace ment means 8. Thus, the dot pattern of a dot picture is concentrated. Thus, moire or roughness is reduced.

100. 发明专利

JPS63151462A IMAGE SIGNAL PROCESSING APPARATUS 失效
公开(公告)号：JPS63151462A
公开(公告)日：1988-06-24
申请号：JP29949186
申请日：1986-12-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANNOMIYA KUNIO , NAKAZATO KATSUO , TSUCHIYA HIROYOSHI
IPC分类号： B41J2/485 , H04N1/40 , H04N1/405
摘要： PURPOSE:To form a dot wherein a number of lines of each dot becomes the same at standard dot row angle, by dividing an input image signal region into black and white square regions to binarize both regions and selectively using two binarized regions according to the density of an input image signal. CONSTITUTION:An x-axis has the main scanning clock of an image signal as a unit and a y-axis has a sub-scanning clock as a unit to form an orthogonal coordinates system (x, y) and, when the objective pixel p(x, y) in the (x, y) system is binarized, the pixel p(x, y) is regarded to be covered with a square B group when the density thereof is below 50% and regarded to be covered with a square W group when said density is 50% or more to be respectively set to the element of the dot of the square B or W. The generation of the dot in the square B or W can be realized by an integrated dither method using the differential quantity from the apices of the squares. By forming the dot by the above mentioned action, a dot wherein a dot row angle is a desired one and a number of the lines constituting the dot is within an error range of one scanning line can be formed and, when the original has single density, a dot shape is uniform and becomes one reduced in density irregularity or roughness.

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