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1. 发明专利

JP2002297568A CODING APPARATUS FOR STRUCTURED DOCUMENT AND RECORDING MEDIUM 失效
公开(公告)号：JP2002297568A
公开(公告)日：2002-10-11
申请号：JP2001094920
申请日：2001-03-29
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI , YOSHIDA SHIGERU
IPC分类号： G06F17/21 , G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To allow suppressing element contents and attribute names efficiently for achieving both of a reduction in operating memory amount and an improvement in processing speed in a coding apparatus for structured document. SOLUTION: In the apparatus to code the attribute names and/or character strings of the element contents with correlating the names and/or strings with applicable element names as a shorter character string of character codes for a structured document, a coding means (a means including a correspondence table creating means 106 and an conversion means 108) to create correspondence tables by applicable element name for the names and/or the strings, perform coding by using the tables summarize with collecting only the names concurrently with applying the coding and also perform coding of the names as the shorter character string is equipped.

2. 发明专利

JP2000029884A CHARACTER CODE REGISTRATION SEARCH DEVICE AND CHARACTER CODE REGISTRATION SEARCH METHOD 失效
公开(公告)号：JP2000029884A
公开(公告)日：2000-01-28
申请号：JP19383398
申请日：1998-07-09
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI
IPC分类号： G06F17/24 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To reduce the storage capacity of a tri-array structure as much as possible by introducing a new data structure for which a double array structure which is a one-dimensional array is developed further and supplying a free registration part in respective character codes so as to be overlapped with each other on a CHECK array. SOLUTION: One of the values of a BASE array is a parallel movement amount as before and is applied to a KANJI (Chinese character) code (of low frequency) not used often (a). The other value is equivalent to the suffix I1 in the horizontal direction of a second BASE array. Then, for instance, in an area for expressing first and second bytes for constituting a 7-bit code, addresses are divided into three and classified into the groups d1, d2, d3 of three kinds (b). The CHECK array supplies the free registration part in the respective KANJI codes so as to be mutually overlapped on the CHECK array by supplying the parallel movement amounts d1, d2 and d3 even, for the character codes (slave nodes) continued to the same character (master node) (c).

3. 发明专利

JP2551021B2 失效
公开(公告)号：JP2551021B2
公开(公告)日：1996-11-06
申请号：JP21986987
申请日：1987-09-01
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI , IGAKI SEIGO , IKEDA HIROYUKI
IPC分类号： G06T7/00 , G06T7/60

4. 发明专利

JPH07104969A DATA COMPRESSING METHOD AND DEVICE AND DATA RESTORING METHOD AND DEVICE 失效
公开(公告)号：JPH07104969A
公开(公告)日：1995-04-21
申请号：JP24482993
申请日：1993-09-30
申请人： FUJITSU LTD
发明人： NAKANO YASUHIKO , OKADA YOSHIYUKI , YAHAGI HIRONORI
IPC分类号： G06F5/00 , H03M7/30 , H03M7/40
摘要： PURPOSE:To realize an encoding system showing each character partial string by a little storage capacity by the combination of a leading character shown by the final character of a character string Just before and a code added to an extension character string succeeding to this by registering a new character string partial string in a dictionary and registering it in a hash table. CONSTITUTION:When a dictionary 101 is retrieved, a pertinent character string is retrieved from a dictionary 101 by inputting the code corresponding to an extension character string and the final character of a character string just before in a prescribed hash function and referring to a hash table 1 12 based on the obtained hash value. When a new character partial string is registered in a dictionary 101, the code imparted to the extension character string of the new character partial string and the final character of the character string just before corresponding to the new character string are inputted in the hash function and the registered number in the dictionary 101 of the new character partial string is registered in the hash table 112 according to the obtained hash value.

5. 发明专利

JPH05197791A FINGER PRINT COLLATING DEVICE 失效
公开(公告)号：JPH05197791A
公开(公告)日：1993-08-06
申请号：JP988792
申请日：1992-01-23
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI
IPC分类号： G06T7/00
摘要： PURPOSE:To provide a finger print collating device capable of accurately collating a finger print even when a similar pattern exists on a different position. CONSTITUTION:The finger print collating device is constituted of a finger print sensor 1 for reading out a finger print image, an image processing part 10 for executing the binarizing processing, line thinning processing, etc., of the finger print image read out from the sensor 1, a primary feature point extracting circuit 20 for extracting a primary feature point from the finger print image read out from the processing part 10, a secondary feature point extracting circuit 30 for tracing a line including the primary feature point extracted by the circuit 20 and extracting a secondary feature point, a finger print dictionary registering part 40 for registering the outputs of the circuits 20, 30 as a finger print dictionary, a dictionary storing part 43 for storing the dictionary, and a finger print collating part 50 for judging the authenticety of the finger print image by collating data up to the secondary feature point after the coincidence of the primary feature point at the time of collation.

6. 发明专利

JPH05189545A FINGERPRINT COLLATING METHOD, FINGERPRINT REGISTERING DEVICE AND FINGERPRINT COLLATING DEVICE 失效
公开(公告)号：JPH05189545A
公开(公告)日：1993-07-30
申请号：JP258492
申请日：1992-01-10
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI
IPC分类号： G06T7/00 , G06K9/00
摘要： PURPOSE:To perform the collation of fingerprints with high accuracy. CONSTITUTION:Plural feature points of the rising lines of a fingerprint are extracted out of a registering fingerprint image (S1). The partial images are segmented in window shapes around the feature points, and one of these partial images is registered a position matching partial image together with other partial images registered for collation respectively (S4). The input fingerprint images are matched with each other in their positions based on the position matching partial image and then matched with each other by the collating partial images (S5). In such a fingerprint collation method, a delta formed on a fingerprint is detected (S2). Then a partial image is segmented in a window shape with the delta defined as a feature point and registered as a collating partial image together with the position matching partial image or another feature point (S4). The input fingerprint images are matched with each other based on the position matching partial image and then collated with each other by the collating partial images (S5).

7. 发明专利

JPH04324585A FINGERPRINT COLLATING METHOD 失效
公开(公告)号：JPH04324585A
公开(公告)日：1992-11-13
申请号：JP12238191
申请日：1991-04-24
申请人： FUJITSU LTD
发明人： IGAKI SEIGO , NIIZAKI TAKU , YAHAGI HIRONORI
IPC分类号： G06T7/00 , G06K9/00
摘要： PURPOSE:To prevent a failure in the collation of fingerprints due to the incapability of positioning at the time of fingerprint collation so as to stably confirm an individual. CONSTITUTION:A main displacement changing section 14 sets main displacement and an auxiliary displacement changing section 15 sets auxiliary displacement. At the time of collation, coincidence/noncoincidence is decided against an input picture at every window by scanning a prefixed extent around a position decided by the set value of the main displacement and registered reference position information in accordance with the set value of the auxiliary displacement after all 'collating windows' are moved to the position. Thereafter, when the coincidence of 'collating windows' exceeds a threshold, the auxiliary displacement is evaluated and subject confirmation is performed by taking the evaluated result.

8. 发明专利

JPH04123275A DEVICE FOR COLLATING FINGER PRINT 失效
公开(公告)号：JPH04123275A
公开(公告)日：1992-04-23
申请号：JP24517390
申请日：1990-09-14
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI
IPC分类号： G06T7/00
摘要： PURPOSE:To rapidly and accurately position a dictionary pattern and an inputted finger print image by providing this finger print collating device with a net pattern extracting means for extracting a net pattern to be registered in a dictionary together with a feature pattern and using the net pattern registered in the dictionary for positining based upon a collating means. CONSTITUTION:The finger print collating device is provided with the net pattern extracting means 22 for registering a net pattern obtained by extracting an image of a net part set up in a finger print image in the dictionary 14 together with a feature pattern at the time of forming the dictionary 14, and at the time of positioning based upon the collating means 18, the net pattern 20 registered in the dictionary 14 is used for the positioning. Even if a partially unreproducible part exists in the inputted finger print image or the image is distored, positioning can be accurately executed without receiving the influence of the defective image, and since the rate of the area of the net part to the whole area is small, processing for extracting the image of the net part can be executed within a short period. Consequently, the positioning of the finger print image can be rapidly and accurately executed and the performance of the finger print collating device can be improved.

9. 发明专利

JPH03217992A FINGERPRINT READER 失效
公开(公告)号：JPH03217992A
公开(公告)日：1991-09-25
申请号：JP1281290
申请日：1990-01-23
申请人： FUJITSU LTD
发明人： NIIZAKI TAKU , IGAKI SEIGO , YAHAGI HIRONORI , TSUDA MITSUHIRO
IPC分类号： A61B5/117 , G06K9/00 , G06T1/00
摘要： PURPOSE:To evade the fetch of a remaining fingerprint image and at the same time to secure the safety with a fingerprint reader by inhibiting the collation of fingerprints when the irradiation of the disturbance light is detected. CONSTITUTION:A position on a light leading plate 11a containing a remaining fingerprint where a forefinger 8a is pressed is irradiated with the disturbance light having the luminous intensity higher than a prescribed level. This disturbance light is detected by a disturbance light sensor 9a and this detection signal is sent to a control part 7b. Then the part 7b sends the action commands to a read inhibiting part 15 and a reporting part 16. Thus the part 15 inhibits a photodetecting sensor 2a in regard of its photodetection. As a result, the sensor 2 never receives the reflects light of the remaining fingerprint on the plate 11a even if the reflected light reaches the sensor 2. The part 16 actuates a buzzer 41 to report the detection of the disturbance light. Thus it is possible to prevent the collation of remaining fingerprints.

10. 发明专利

JPH03196275A CALCULATION SYSTEM FOR CENTER POSITION OF FINGERPRINT 失效
公开(公告)号：JPH03196275A
公开(公告)日：1991-08-27
申请号：JP33780889
申请日：1989-12-25
申请人： FUJITSU LTD
发明人： YAHAGI HIRONORI , IGAKI SEIGO
IPC分类号： G06T7/00
摘要： PURPOSE:To easily calculate the center position of a fingerprint by selecting plural sections having the largest number of coordinates respectively, selecting the least section out of those selected sections, and calculating the center position of a fingerprint shown in a binary image based on the coordinates stored in the least section. CONSTITUTION:A detection means 111 calculates the degree of discordance against a linear pattern set parallel to a prescribed 1st axis for each point of a binary image showing a fingerprint. Then the means 111 detects the points having their degrees of noncoincidence lower than the threshold value. A coordinate storing means 131 introduces the coordinates which show the positions of points detected by the means 111 in terms of the components of the 1st axis direction and a 2nd axis direction. Then the means 131 stores the coordinates after sorting them into plural sections in accordance with the value of the component of the 2nd axis direction. A calculation means 141 selects a section having the largest number of stored coordinates among those sections stored in the means 131 and then selects a section having the least number of coordinates. Then the means 141 calculates the center position of a fingerprint shown in a binary image based on the coordinates stored in the least section. In such a constitution, the center position of a fingerprint is simply calculated.

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