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公开(公告)号：FI67646C
公开(公告)日：1985-04-10
申请号：FI773913
申请日：1977-12-22
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：GB1125058A
公开(公告)日：1968-08-28
申请号：GB3632767
申请日：1967-08-08
Applicant: IBM
Inventor： HENEGHAN MICHAEL JAMES
IPC: H03K19/018
Abstract: 1,125,058. Integrated circuits. INTERNATIONAL BUSINESS MACHINES CORP. 8 Aug., 1967, No. 36327/67. Heading H3T. An integrated circuit comprising a number of units 22. 23, 24 has associated with. each unit an output transistor T1, T2, T3 whose emitter is connected to an output terminal 26, 29, 30 and via a resistor R1, R2, R3 to an electronic switch S1, S2, S3 shown as a diode. When a voltage is applied to line 27 such as to make the diodes conductive the transistors operate as separate emitter followers and can be used to drive short transmission lines which do not have to be terminated in their characteristic impedances. If the diodes are biassed off, the emitter resistors are isolated and the transistors can be used to drive long matched lines. Similarly, if the outputs of several circuits are to be paralleled and only one emitter resistor is needed, the resistors in the other circuits are isolated by biassing off the corresponding diodes. The diodes may be replaced by transistors (Fig. 3, not shown).
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公开(公告)号：NO151913B
公开(公告)日：1985-03-18
申请号：NO774329
申请日：1977-12-15
Applicant: IBM
Inventor： HALLET MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：CH622142A5
公开(公告)日：1981-03-13
申请号：CH1355177
申请日：1977-11-08
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
IPC: G06F3/153 , G09G1/00 , G09G1/04 , G09G1/28 , G09G5/30 , H04N3/23 , H04N9/28 , H04N3/22 , H01J29/56
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：AU3165877A
公开(公告)日：1979-06-21
申请号：AU3165877
申请日：1977-12-16
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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Patent Agency Ranking
公开(公告)号：DE2747239A1
公开(公告)日：1978-07-06
申请号：DE2747239
申请日：1977-10-21
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：NO151913C
公开(公告)日：1985-06-26
申请号：NO774329
申请日：1977-12-15
Applicant: IBM
Inventor： HALLET MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：FI67646B
公开(公告)日：1984-12-31
申请号：FI773913
申请日：1977-12-22
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：DK147030C
公开(公告)日：1984-08-27
申请号：DK571477
申请日：1977-12-21
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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公开(公告)号：DK147030B
公开(公告)日：1984-03-19
申请号：DK571477
申请日：1977-12-21
Applicant: IBM
Inventor： HALLETT MICHAEL HENRY , SOWTER BRIAN RAYMOND , HENEGHAN MICHAEL JAMES
Abstract: A three color gun cathode ray tube has convergence correction signals derived from digital signals stored in a digital data store. The screen of the tube is divided into a plurality of areas and a digital correction signal derived for each area. The system is arranged so that when the three beams are scanning a particular area the digital correction signal associated with that area is read out from the digital store, passed through a digital to analog converter and then applied to the convergence coils of the tube.
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