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公开(公告)号：DE2961475D1
公开(公告)日：1982-01-28
申请号：DE2961475
申请日：1979-12-10
Applicant: IBM
Inventor： HEILING GERALD MICHAEL , KNAPPE LAVERNE FRANK , REGEHR JOHN LEON
IPC: B41J2/32 , B41J25/304 , B41J29/02 , B41J3/20
Abstract: A non-impact thermal printer is formed using a pivoted stiffner-frame on which is mounted a printed circuit card-print head assembly. The card is slotted with the print heads mounted at the distal ends of the cantilevered portions to enable close compliance between print head read/write units and the print media through the torsional resilience of the circuit card cantilevered portions. Compact, simple structure is provided by having the printer control circuitry mounted on the same printed circuit card.
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公开(公告)号：DE2354520A1
公开(公告)日：1974-06-20
申请号：DE2354520
申请日：1973-10-31
Applicant: IBM
Inventor： COCHRAN WILLIAM HUGH , HEILING GERALD MICHAEL
Abstract: A self-scanned photodiode array operating in the recharge current mode generates a serial video information output signal as light from a light emitting diode illuminator is reflected from the scanned document and imaged onto the photodiode array. A photodiode sensitivity and illumination variance compensation signal is generated during a write mode as the photodiode array scans a white background. The serial compensation signal thus generated is converted into an N bit binary code for each photodiode in the array. The N bit binary code is stored. Thereafter, when scanning printed or written information on the document during an operational mode, the serial video information signal is digitized as in the write mode and forms an address together with the stored digitized compensation bits for addressing a stored table of normalized contrast ratios in the form of M data bits. These M data bits are passed to an output buffer and converted to an analog signal equal to 1 minus the contrast ratio to provide a corrected serial video information signal.
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公开(公告)号：DE69027522T2
公开(公告)日：1997-01-23
申请号：DE69027522
申请日：1990-11-27
Applicant: IBM
Inventor： BLOCK TIMOTHY ROY , EBLER MARCIA BERG , FREITAG LADD WILLIAM , HEILING GERALD MICHAEL , HOLTER SPENCER CLINTON , KARST DENNIS LEON , SILJENBERG DAVID WARREN , SODERSTROM RONALD LEE , TRNKA JOHN THOMAS
IPC: H04B10/12 , G02B6/38 , H04B10/135 , H04B10/14 , H04B10/155 , H04B10/2581 , H04B10/00 , G02B6/42
Abstract: An optical fiber link card communication module, and process for fabricating the module, where the module provides a parallel electrical interface to the user, facilitates high speed serial transmission of data over an optical data link, and contains a plurality of converters (130,131) for performing conversions between both electrical and optical signals. The module further includes edge mounted optical components having leads mounted on the surface of a card (as opposed to standard pin-in-hole type leads) to minimize lead capacitance and inductance from the optical components to the card electronics, on board card control means for the converters and safety shut down means on the same card as the electrical and optical components. A preferred embodiment of the invention contemplates fabricating the optical communication module on a single multilayer card with all the transmitter electrical components being located on one side of the card, all receiver electrical components being located on the other side of the card, and the transmitter and receiver components being separated by shielding layers in the card. By using two transmitter/receiver pairs (with the transmitters and receivers being located on respective sides of the card) an embodiment of the invention provides for double full duplex communications.
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公开(公告)号：DE3782043D1
公开(公告)日：1992-11-05
申请号：DE3782043
申请日：1987-12-11
Applicant: IBM
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Patent Agency Ranking
公开(公告)号：AU6787590A
公开(公告)日：1991-07-11
申请号：AU6787590
申请日：1990-12-07
Applicant: IBM
Inventor： HEILING GERALD MICHAEL , KNODEL DAVID ARDEL , PETERSON MICHAEL JOSEPH , SCHUELKE BRIAN ANDREW , SILJENBERG DAVID WARREN , SODERSTROM RONALD LEE , TRNKA JOHN THOMAS
Abstract: A fully redundant safety interlock system is provided comprising, means for detecting the loss of light on a fiber optic link; controller means, coupled to said means for detecting, for determining the safety condition of the link based on the output of said means for detecting, and for controlling the radiant energy output of an optical transmitter, based on the determined safety condition, via redundant output control signals; and means, coupled to said controller means, responsive to said redundant control signals, for interconnecting the output of said controller means to transmitter drive circuitry to thereby adjust the radiant energy output by the transmitter. According to a preferred embodiment of the invention, the controller means includes an electronic implementation of two independent state machines, each of which redundantly determines the connection state of the optical link between two optical link cards. The output from the state machines is used to adjust (for example, turn on and turn off) the drive circuitry for the transmitter via fully redundant paths which carry the redundant control signals.
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公开(公告)号：DE69027522D1
公开(公告)日：1996-07-25
申请号：DE69027522
申请日：1990-11-27
Applicant: IBM
Inventor： BLOCK TIMOTHY ROY , EBLER MARCIA BERG , FREITAG LADD WILLIAM , HEILING GERALD MICHAEL , HOLTER SPENCER CLINTON , KARST DENNIS LEON , SILJENBERG DAVID WARREN , SODERSTROM RONALD LEE , TRNKA JOHN THOMAS
IPC: H04B10/12 , G02B6/38 , H04B10/135 , H04B10/14 , H04B10/155 , H04B10/2581 , H04B10/00 , G02B6/42
Abstract: An optical fiber link card communication module, and process for fabricating the module, where the module provides a parallel electrical interface to the user, facilitates high speed serial transmission of data over an optical data link, and contains a plurality of converters (130,131) for performing conversions between both electrical and optical signals. The module further includes edge mounted optical components having leads mounted on the surface of a card (as opposed to standard pin-in-hole type leads) to minimize lead capacitance and inductance from the optical components to the card electronics, on board card control means for the converters and safety shut down means on the same card as the electrical and optical components. A preferred embodiment of the invention contemplates fabricating the optical communication module on a single multilayer card with all the transmitter electrical components being located on one side of the card, all receiver electrical components being located on the other side of the card, and the transmitter and receiver components being separated by shielding layers in the card. By using two transmitter/receiver pairs (with the transmitters and receivers being located on respective sides of the card) an embodiment of the invention provides for double full duplex communications.
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公开(公告)号：DE3782043T2
公开(公告)日：1993-04-15
申请号：DE3782043
申请日：1987-12-11
Applicant: IBM
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