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公开(公告)号：DE2964995D1
公开(公告)日：1983-04-14
申请号：DE2964995
申请日：1979-09-12
Applicant: IBM
Inventor： SCHINDLER HANS RUDOLF , VETTIGER PETER
Abstract: For the multiplex transmission of coded speech signals in periodic frames, single segments (blocks of coded samples) are selectively suppressed for redundancy reduction, and are replaced on the receiver side by optimally correlated subsections of equal length from previously transmitted segments. On the transmitter side, a multiplicity of compare operations are made for each speech signal, between the respective newest coded segment and a step wise shifted subsection window of previous segments, to determine the best correlated subsection, i.e. the one which is most suitable as replacement and the respective relative offset and correlation. From a group of speech signals, the one signal, or several signals, having the best correlation is selected for suppression of a segment before transmission. Instead of each missing segment an indication of the corresponding optimum offset is transmitted in the frame header. In the receiver for each speech signal a few previous segments are kept in storage from which then, with the aid of the received offset indication the optimally suited subsection can be selected and used as replacement.
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公开(公告)号：IT7926085D0
公开(公告)日：1979-09-28
申请号：IT2608579
申请日：1979-09-28
Applicant: IBM
Inventor： SCHINDLER HANS RUDOLF , VETTIGER PETER
Abstract: For the multiplex transmission of coded speech signals in periodic frames, single segments (blocks of coded samples) are selectively suppressed for redundancy reduction, and are replaced on the receiver side by optimally correlated subsections of equal length from previously transmitted segments. On the transmitter side, a multiplicity of compare operations are made for each speech signal, between the respective newest coded segment and a step wise shifted subsection window of previous segments, to determine the best correlated subsection, i.e. the one which is most suitable as replacement and the respective relative offset and correlation. From a group of speech signals, the one signal, or several signals, having the best correlation is selected for suppression of a segment before transmission. Instead of each missing segment an indication of the corresponding optimum offset is transmitted in the frame header. In the receiver for each speech signal a few previous segments are kept in storage from which then, with the aid of the received offset indication the optimally suited subsection can be selected and used as replacement.
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公开(公告)号：DE3065583D1
公开(公告)日：1983-12-22
申请号：DE3065583
申请日：1980-04-10
Applicant: IBM
Inventor： CHEVILLAT PIERRE , SCHINDLER HANS RUDOLF
Abstract: A sensor, having a plurality of parallel elongated light transducers, is rotated relative to a document to be aligned with a predetermined reference. A signal accumulated from the transducers reaches a distinct maximum when printed lines on the document are aligned with the elongated transducers. Detection of this maximum enables measurement of the angle by which the document is out of alignment.
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公开(公告)号：IT1188794B
公开(公告)日：1988-01-28
申请号：IT2608579
申请日：1979-09-28
Applicant: IBM
Inventor： SCHINDLER HANS RUDOLF , VETTIGER PETER
Abstract: For the multiplex transmission of coded speech signals in periodic frames, single segments (blocks of coded samples) are selectively suppressed for redundancy reduction, and are replaced on the receiver side by optimally correlated subsections of equal length from previously transmitted segments. On the transmitter side, a multiplicity of compare operations are made for each speech signal, between the respective newest coded segment and a step wise shifted subsection window of previous segments, to determine the best correlated subsection, i.e. the one which is most suitable as replacement and the respective relative offset and correlation. From a group of speech signals, the one signal, or several signals, having the best correlation is selected for suppression of a segment before transmission. Instead of each missing segment an indication of the corresponding optimum offset is transmitted in the frame header. In the receiver for each speech signal a few previous segments are kept in storage from which then, with the aid of the received offset indication the optimally suited subsection can be selected and used as replacement.
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公开(公告)号：IT8021997D0
公开(公告)日：1980-05-13
申请号：IT2199780
申请日：1980-05-13
Applicant: IBM
Inventor： CHEVILLAT PIERRE , SCHINDLER HANS RUDOLF
Abstract: A sensor, having a plurality of parallel elongated light transducers, is rotated relative to a document to be aligned with a predetermined reference. A signal accumulated from the transducers reaches a distinct maximum when printed lines on the document are aligned with the elongated transducers. Detection of this maximum enables measurement of the angle by which the document is out of alignment.
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Patent Agency Ranking
公开(公告)号：DE69529478T2
公开(公告)日：2003-10-09
申请号：DE69529478
申请日：1995-04-15
Applicant: IBM
Inventor： ENGBERSEN ANTONIUS PAULUS , HERKERSDORF ANDREAS , LEMPPENAU WOLFRAM , SCHINDLER HANS RUDOLF
Abstract: PCT No. PCT/EP95/01426 Sec. 371 Date Oct. 7, 1997 Sec. 102(e) Date Oct. 7, 1997 PCT Filed Apr. 15, 1995 PCT Pub. No. WO96/33563 PCT Pub. Date Oct. 24, 1996A modular approach to the mapping of data in and from a standard SDH/SONET signal is described. A module has interfaces (T0-T8) which allows to connect to it to other of its kind and thereby achieving higher data rates, i.e. access to standard signals of higher levels. By choosing among different interconnection schemes, arrangements comprising a plurality of modules are also able to support concatenated data traffic.
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公开(公告)号：DE69529478D1
公开(公告)日：2003-02-27
申请号：DE69529478
申请日：1995-04-15
Applicant: IBM
Inventor： ENGBERSEN ANTONIUS PAULUS , HERKERSDORF ANDREAS , LEMPPENAU WOLFRAM , SCHINDLER HANS RUDOLF
Abstract: PCT No. PCT/EP95/01426 Sec. 371 Date Oct. 7, 1997 Sec. 102(e) Date Oct. 7, 1997 PCT Filed Apr. 15, 1995 PCT Pub. No. WO96/33563 PCT Pub. Date Oct. 24, 1996A modular approach to the mapping of data in and from a standard SDH/SONET signal is described. A module has interfaces (T0-T8) which allows to connect to it to other of its kind and thereby achieving higher data rates, i.e. access to standard signals of higher levels. By choosing among different interconnection schemes, arrangements comprising a plurality of modules are also able to support concatenated data traffic.
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公开(公告)号：IT1148862B
公开(公告)日：1986-12-03
申请号：IT2199780
申请日：1980-05-13
Applicant: IBM
Inventor： CHEVILLAT PIERRE , SCHINDLER HANS RUDOLF
Abstract: A sensor, having a plurality of parallel elongated light transducers, is rotated relative to a document to be aligned with a predetermined reference. A signal accumulated from the transducers reaches a distinct maximum when printed lines on the document are aligned with the elongated transducers. Detection of this maximum enables measurement of the angle by which the document is out of alignment.
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公开(公告)号：DE2727731A1
公开(公告)日：1977-12-29
申请号：DE2727731
申请日：1977-06-21
Applicant: IBM
Inventor： SCHINDLER HANS RUDOLF , VETTIGER PETER
Abstract: In an extension line circuit, an off-hook condition is detected during ringing by superimposing in each ringing cycle the values of the line current existing at two sampling instants exactly one-half cycle apart, and testing whether the sum (or mean value) exceeds a given threshold. When DC current starts flowing due to the set going off-hook, the mean value of the two values will pass a threshold.
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公开(公告)号：DE2649024A1
公开(公告)日：1977-09-08
申请号：DE2649024
申请日：1976-10-28
Applicant: IBM
Inventor： SCHINDLER HANS RUDOLF , VETTIGER PETER
Abstract: This invention comprises a telephone hybrid circuit having two opto-coupler arrangements for transferring voice signals from the two-wire line to a port of the switching system on one hand and from a port of the switching system to the two-wire line on the other hand. In addition, a pair of feeder circuits in the form of current sources comprising active elements are provided for feeding a constant positive direct current to one wire of the two-wire line and a negative direct current of equal magnitude to the other wire of the two-wire line. Each of the current sources includes control circuitry for maintaining a constant ratio between the current furnished by the current source and a control current common to both current sources. A control current path is connected to the output of one of the opto-coupler arrangements for generating a common control current in response to a dc signal and a superimposed voice signal received from a port of the switching system. The other opto-coupler arrangement couples the signals from the two-wire line to a port of the switching system.
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