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公开(公告)号：CA1199219A
公开(公告)日：1986-01-14
申请号：CA422613
申请日：1983-03-01
Applicant: IBM
Inventor： GOLDRIAN GOTTFRIED , WOHNSDORF MANFRED E , RUDOLPH VOLKER
Abstract: METHOD OF AND ARRANGEMENT FOR CONTROLLING A ROW OF PRINT ELECTRODES FOR RECORDING INFORMATION ON AN ELECTROSENSITIVE RECORD CARRIER The invention concerns a method of and an arrangement for controlling a row of print electrodes for recording information on an electrosensitive record carrier, preferably a record carrier covered with a metallic or metalliferous layer, by means of a print head movable relatively parallel to the surface of the record carrier and comprising a row of print electrodes controlled by print pulses, and a control circuit for the timely generation of print pulses from digital or analog signals, whereby each print current pulse consists of a first section of relatively high amplitude and relatively short duration and a second section of relatively low amplitude and relatively long duration in such a manner that the first section of each print current pulse is used as a print pulse and the second section as a self-extinguishing burn-out pulse.
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Patent Agency Ranking
公开(公告)号：DE69230031D1
公开(公告)日：1999-10-28
申请号：DE69230031
申请日：1992-04-30
Applicant: IBM
Inventor： RUDOLPH VOLKER , RUPPERT WERNER
Abstract: For pattern recognition and validation, especially of hand-written signatures, the invention provides that original files of basic structures are established and stored in a reference image file (39). The structure to be verified is analyzed in the same way and with the same methods to find their significant basic structures. Information stored in the reference image file and information found as significant basic structures are compared. This comparison is performed in the order of significance sequentially or parallel at least for some information entities. Validation is performed for each single comparison step and the results are weighted. If no clear result is gained, a stepwise refinement of the recognition structures is performed by repeating the recognition and validation procedure on a higher level of information, or with other words with finer details to be analyzed.
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公开(公告)号：CA1221571A
公开(公告)日：1987-05-12
申请号：CA452132
申请日：1984-04-16
Applicant: IBM
Inventor： GOLDRIAN GOTTFRIED , RUDOLPH VOLKER , RUPPERT WERNER , WOHNSDORF MANFRED
IPC: G03F5/00
Abstract: METHOD OF REPRODUCING IMAGES WITH GREY VALUES The invention concerns a method of reproducing images with grey values,using picture elements (PELS) for the different grey values, which are represented by dot patterns with a different distribution and arrangement of the individual dots, characterized in that for each grey value there is a stock of quasi-equivalent grey value pels, and that for representing each grey value of an original to be reproduced, a pel corresponding to this grey value is selected from the associated stock of quasi-equivalent grey value patterns.
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公开(公告)号：CA1207586A
公开(公告)日：1986-07-15
申请号：CA428749
申请日：1983-05-24
Applicant: IBM
Inventor： HILPERT FRITZ , KOHM ERICH , RUDOLPH VOLKER , WOHNSDORF MANFRED
Abstract: PRINT HEAD FOR AN ELECTROEROSION PRINTER Print head for an electroerosion printer, with print electrodes arranged in rows and/or columns in a holder, and with at least one slightly shorter sensor electrode at the trailing edge of the print head to control the feeding of the print electrodes compensating for burn-off and/or abrasion, at least the sensor elelctrode (7) being inclined approximately in the direction of the median normal to the surface of the unprinted lateral surface of the trough-like depression.
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公开(公告)号：CA1199223A
公开(公告)日：1986-01-14
申请号：CA428748
申请日：1983-05-24
Applicant: IBM
Inventor： HILPERT FRITZ W , KOHM ERICH , RUDOLPH VOLKER , WOHNSDORF MANFRED E
Abstract: ARRANGEMENT FOR PRESSING DOWN A PRINT HEAD COMPRISING AT LEAST ONE PRINT ELECTRODE Arrangement for a print head having at least one print electrode and being movable relative to a record carrier transported over a support, and pressed down onto the record carrier by the effect of an actuator, where a first frame piece (4) carrying the print electrode (6) supported in a holder (5) is pivotably fixed, via a spring arrangement (2, 3) biasing the print head towards the record carrier, to a second frame piece (1) opposite the first frame piece (4), where furthermore an electromagnetic actuator (9, 10) between the two frame pieces is attached to the second frame piece (1) to which a resilient ferromagnetic armature (14) is also fixed and through its greater bias acting against the bias of the spring arrangement (2, 3) abuts against a non-ferromagnetic stop (15) provided at the first frame piece and facing the end of the armature, which thus lifts the print head against the force of the spring arrangement (2, 3), and where by the operation of the actuator (9, 10), the print electrode (6) places itself against the record carrier (7) under the force of the spring arrangement (2, 3).
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公开(公告)号：DE69230031T2
公开(公告)日：2000-04-20
申请号：DE69230031
申请日：1992-04-30
Applicant: IBM
Inventor： RUDOLPH VOLKER , RUPPERT WERNER
Abstract: For pattern recognition and validation, especially of hand-written signatures, the invention provides that original files of basic structures are established and stored in a reference image file (39). The structure to be verified is analyzed in the same way and with the same methods to find their significant basic structures. Information stored in the reference image file and information found as significant basic structures are compared. This comparison is performed in the order of significance sequentially or parallel at least for some information entities. Validation is performed for each single comparison step and the results are weighted. If no clear result is gained, a stepwise refinement of the recognition structures is performed by repeating the recognition and validation procedure on a higher level of information, or with other words with finer details to be analyzed.
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