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1. 发明专利

JPH0435105B2 失效
公开(公告)号：JPH0435105B2
公开(公告)日：1992-06-10
申请号：JP15439984
申请日：1984-07-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KUROSAWA TOSHIHARU , OOTSUKA HIROTAKA , MARUYAMA JUJI , NAKAZATO KATSUO , TSUCHA HIROYOSHI
IPC分类号： H04N1/405 , H04N1/40

2. 发明专利

JPH0351353B2 失效
公开(公告)号：JPH0351353B2
公开(公告)日：1991-08-06
申请号：JP17065784
申请日：1984-08-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUCHA HIROYOSHI , KUROSAWA TOSHIHARU , OOTSUKA HIROTAKA , MARUYAMA JUJI , NAKAZATO KATSUO
IPC分类号： H04N1/405 , H04N1/40 , H04N1/403

3. 发明专利

JPH0223487A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPH0223487A
公开(公告)日：1990-01-25
申请号：JP17457088
申请日：1988-07-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUCHIYA HIROYOSHI , YAMAMOTO ATSUHARU , KUROSAWA TOSHIHARU , MARUYAMA YUJI , NAKAZATO KATSUO
IPC分类号： G06K7/10
摘要： PURPOSE:To decode a bar code regardless of the stuck direction of a label by reading binary data in the inclining direction of the bar code by the decision of the texture (the decision of the parallel characteristic, etc., of the bars) of the bar code. CONSTITUTION:The multivalued input picture signal of a terminal 1 is converted into a binary signal in a binarizing circuit 2. All the signals except those in a part decided as a bar code area are erased in a texture deciding circuit 3, and the whole of the bar code area is painted out in an area deciding circuit 4. The output of the binarizing circuit 2 is gated by the signal to paint out the bar code area in a segmenting circuit 5 and stored in a memory 6. An inclination and center arithmetic circuit 7 obtains the inclination and the center point of the bar code based on the painted out signal area, an address is obtained by performing an operation according to the inclination in an address arithmetic circuit 8, the data are read from the memory 6 and decoded in a decoding circuit 9, and the bar code is decided. The bar code can be decoded even when the label is stuck in the arbitrary direction on an original in the above-mentioned composition of the title device.

4. 发明专利

JPH0223485A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPH0223485A
公开(公告)日：1990-01-25
申请号：JP17456888
申请日：1988-07-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUCHIYA HIROYOSHI , YAMAMOTO ATSUHARU , KUROSAWA TOSHIHARU , MARUYAMA YUJI , NAKAZATO KATSUO
IPC分类号： G06K7/10
摘要： PURPOSE:To correctly decode a bar code even when a label is stuck in an arbitrary direction by separating the bar code and its background picture by deciding the texture of the bar code and reading binary data in the inclining direction of the bar code. CONSTITUTION:The multivalued input picture signal of a terminal 1 is converted into a binary signal in a binarizing circuit 2 and secures the width of the black and white of the bar code for at least two picture elements in a fine line enlarging circuit 3 so that the width of a bar in the bar code is not eliminated even when the binary signal is thinned in a thinning circuit 4 afterward. The fine line enlarged data are thinned into 1/2 in both a main scanning direction and a sub scanning direction in the thinning circuit 4, and a texture deciding circuit 5 erases all the signals except those in a part decided as a bar code area and paints out the whole of the bar code area. For the signals to paint out the bar code area, their data are interpolated for the thinned amount into double in both the main scanning direction and the sub scanning direction. The output of the binarizing circuit 2 is gated by the signals to paint out the bar code area in a segmenting circuit 7 and stored in a memory 8. On the other hand, the data are read from the memory 8 by the output of an inclination and center arithmetic circuit 9 and the address of an address arithmetic circuit 10 accordant with the inclination based on the painted out signal area and decoded in a decoding circuit 11.

5. 发明专利

JPH01238373A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPH01238373A
公开(公告)日：1989-09-22
申请号：JP6658588
申请日：1988-03-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KUROSAWA TOSHIHARU , TSUCHIYA HIROYOSHI , MARUYAMA YUJI , NAKAZATO KATSUO
IPC分类号： H04N1/405 , G06T5/00 , H04N1/40
摘要： PURPOSE:To improve the gradation and resolution characteristics of the title device and to make the picture element processing speed faster by binarizing the input correction level to a noticeable picture element considering an accumulated error corresponding to the noticeable picture element and accumulated errors of the surroundings and finding a new binarized error from the difference between the sum of the noticeable picture element and the accumulated errors and a binarized result. CONSTITUTION:The 1st input correcting means 5 adds an input level Lxy and error correction level exy to each other and outputs an input correction level I1xy. The corrected input level I1xy is binarized by means of a binarizing means 8 by using the fixed threshold T=R/2 of a signal terminal 7. Then a new binarized error is found by subtracting the binarized result of the correction level I1xy from the correction level I2xy to which an accumulated error Sxy is added. When the factor Ka to be used for multiplying an accumulated error Sxy and another factor Kb to be used for multiplying the total sum of accumulated errors SA, SB, and SD of surrounding picture elements areas are respectively made smaller within ranges of 0

6. 发明专利

JPH01109960A PICTURE SIGNAL PROCESSING UNIT 失效
公开(公告)号：JPH01109960A
公开(公告)日：1989-04-26
申请号：JP26856387
申请日：1987-10-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MARUYAMA YUJI , TSUCHIYA HIROYOSHI , KUROSAWA TOSHIHARU , NAKAZATO KATSUO
IPC分类号： H04N1/405 , G06T1/00 , H04N1/40
摘要： PURPOSE:To improve the quality of a line picture or character picture by calculating a difference of density level between a preceding picture element and a noted picture element and bringing forcibly the binarized level to a black or a white level depending on the quantity between the difference signal and the threshold value. CONSTITUTION:A differential operation means 102 consists of a register and a differential arithmetic unit, calculates a difference between the density level of the preceding picture element and the density level of the noted picture element and outputs a difference signal Bxy to an output discrimination means 103. The means 103 consists of a comparator receiving positive/negative threshold values and a AND and an OR gate, and receives the signal Bxy and the binary level Pxy from the binarizing means 100. When the signal Bxy is larger than the positive threshold value, the level Pxy is forcibly to the black level and when the signal is larger than the negative threshold value, the white level is obtained forcibly. When the signal Bxy is smaller than the positive/negative threshold value, the level Pxy is outputted as it is as the output picture Oxy. Thus, the quality of the line picture and character picture is improved.

7. 发明专利

JPS6476365A IMAGE SIGNAL PROCESSOR 失效
公开(公告)号：JPS6476365A
公开(公告)日：1989-03-22
申请号：JP23512187
申请日：1987-09-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KUROSAWA TOSHIHARU , MARUYAMA YUJI , TSUCHIYA HIROYOSHI , NAKAZATO KATSUO
IPC分类号： H04N1/405 , G06T5/00 , H04N1/40 , H04N1/41
摘要： PURPOSE:To extremely improve gradation regenerating characteristics of both low and high density areas in terms of an input level, by changing successively plural allocation coefficients in an allocation coefficient set in response to image element processing for application of these coefficients without fixing the allocation rate of a multi-level error with respect to the peripheral picture elements of the noticed one. CONSTITUTION:The high-order (n) bits of an input correction level are defined as multi-level output data and at the same time the multi-level value is selected and outputted in response to the multi-level output data. Then the multi-level value is corrected in the next image element process based on the difference between a multi-level error and the sum total of the error allocation values corresponding to the peripheral image elements of the noticed one. Thus coincidence is secured between the multi-level error and the sum total of the error allocation values of said peripheral image elements. Then the gradation regenerating characteristics are improved for both low and high density areas of an input level. Thus it is possible to obtain an image signal processor which can decrease the moire patterns.

8. 发明专利

JPS6429169A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPS6429169A
公开(公告)日：1989-01-31
申请号：JP18615887
申请日：1987-07-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KUROSAWA TOSHIHARU , TSUCHIYA HIROYOSHI , NAKAZATO KATSUO , MARUYAMA YUJI
IPC分类号： H04N1/405 , H04N1/40
摘要： PURPOSE:To easily obtain a recording (or display) reproducing picture in matching with the gradation characteristic of a printer (display device) by using a high-order bit of an input correction level so as to use it as a multi-value processing output data and using a multi-value processing output data so as to select a multi-value processing output level thereby applying multi-value processing error arithmetic processing. CONSTITUTION:An error storagemeans 101, an input correction means 105, a multi-value processing output selection means 107 receiving a high-order n-bit of a correction level as a multi-value processing data and selectively outputting a multi-value processing level corresponding to the multi-value processing data, an error arithmetic means 108 obtaining a multi- value error being a difference between a correction level and a multi-value level, and an error distribution means 109 calculating an error distribution corresponding to unprocessed picture elements around the noted picture element from the distribution coefficient distributing the multi-value processing error to unprocessed picture elements around the noted picture element, adding the error distribution to the integrated error of the picture element location corresponding in the error distribution storage means and storing the result again, are provided. Thus, the multi-value processing level corresponding to the multi-value processing output data is selected and outputted to realize the gradation reproduction in matching with the output characteristic.

9. 发明专利

JPS63212274A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPS63212274A
公开(公告)日：1988-09-05
申请号：JP4557787
申请日：1987-02-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MARUYAMA YUJI , TSUCHIYA HIROYOSHI , NAKAZATO KATSUO , TAKAHASHI KIYOSHI , KUROSAWA TOSHIHARU
IPC分类号： H04N1/41 , G06T5/00 , H04N1/405
摘要： PURPOSE:To remarkably improve the gradation reproductivity of the low density and high density areas of an input level by extracting a low order bit from a binarized error, distributing to one of the periphery of a noticed picture element, supplying '0' in the low order bit of the binarized error and distributing to the peripheral picture element. CONSTITUTION:A binarized error distribution arithmetic means 113 extracts the low order (n) bits from the binarized error Exy to output as the binarized error Exyl, further, the low order n bits of the binarized error Exy is supplied with 0 to output as the binarized error Exyu. An error distribution value arithmetic means 110 operates an error distribution value corresponding to the untreated picture elements A-D of the noticed picture element periphery 102 from the binarized error Exyu and a distribution coefficient from a distribution coefficient generating means 111, an error updating means 112 adds one of the error distribution values to the binarized error Exyl to and a residual error distribution value to an accumulated error at a corresponding picture element position in an error storing means 101 and restore. Thereby, the sums of the binarized errors and the error distribution values of the peripheral picture element are made coincide and the gradation reproductivity of the low density and high density areas of the input level can be improved.

10. 发明专利

JPS63155950A PICTURE SIGNAL PROCESSOR 失效
公开(公告)号：JPS63155950A
公开(公告)日：1988-06-29
申请号：JP30419886
申请日：1986-12-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKAHASHI KIYOSHI , NAKAZATO KATSUO , TSUCHIYA HIROYOSHI , KUROSAWA TOSHIHARU , MARUYAMA YUJI
IPC分类号： H04N1/40 , G06T5/00 , H04N1/403
摘要： PURPOSE:To drastically suppress the texture by selecting and utilizing at random plural arrangement coefficients corresponding to the position of circumferential picture elements from one set of arrangement coefficient set together with the execution of picture element processing while making the ratio of arrangement of a binarization error not constant in a noted picture element with respect to the circumferential picture element. CONSTITUTION:The rate of arrangement of the binarization error of a noted picture element with respect to the circumferential picture elements is not brought into a prescribed relative position relation with respect to the noted picture element by using an arrangement coefficient generating means 12 revising at random the relative picture element position of one set of the arrangement coefficient set with the noted picture element together with the processing of the picture element, and a density level different from that of each picture element of an original level is superimposed on said density density level by using a density addition means 15 to use the result as the input level of the noted picture element. Thus, no texture pattern is caused in the processed output picture.

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