公开(公告)号：US3771136A

公开(公告)日：1973-11-06

申请号：US3771136D

申请日：1971-04-29

Applicant: IBM

Inventor： HENEGHAN M ,  HUGHES M

IPC: G06F9/22 ,  G06F13/12 ,  G11B20/12 ,  G06F9/12

CPC classification number: G06F13/122 ,  G06F9/226 ,  G11B20/1252 ,  G11B2020/1257

Abstract: A significant cost savings is effected in a magnetic disk file control unit with a minimum loss in performance by producing a sequence of control signals, hereinafter referred to as mini-ops, for each of a large number (e.g., 39) of available file commands (often referred to as CCWs). Each mini-op is common to a large number of the commands, and it controls an integrated control unit (adaptor) or channel control unit during portions of Read, Write and Search CCW executions. The preferred embodiment of the improved control unit has been particularly adapted for use with a microprogrammed processor and each sequence of mini-ops is produced by the microprogram. A count is formed with each miniop; and, when predetermined count values are achieved in the control unit, they selectively initiate required microprogram interrupts and/or control unit control functions. There are only four mini-ops, namely: Read Data, Write Data, Write Gap, and NoOp. A mini-op is issued for each field which is to be read or written and for each gap which is to be written. No-Ops are issued as required. Prior art control units included very complex and expensive channel or adaptor hardware to decode each of the 39 commands or CCWs transferred under microprogram control from control store associated with the processor to the channel or adaptor. The use of the mini-ops simplifies and reduces substantially the hardware, yet it does not result in any appreciable degradation of the processing system.

Abstract translation: 通过产生一系列控制信号（以下称为小型操作），对于大量（例如39个）可用的文件命令，可以在具有最小性能损失的磁盘文件控制单元中实现显着的成本节省 （通常称为CCW）。 每个迷你操作对于大量命令是通用的，并且在读，写和搜索CCW执行的部分期间控制集成控制单元（适配器）或通道控制单元。 改进的控制单元的优选实施例已经特别适于与微型喷头一起使用

公开(公告)号：ZA7707591B

公开(公告)日：1979-07-25

申请号：ZA7707591

申请日：1977-12-21

Applicant: IBM

Inventor： SOWTER B ,  HALLETT M ,  HENEGHAN M

IPC: G06F3/153 ,  G09G1/00 ,  G09G1/04 ,  G09G1/28 ,  G09G5/30 ,  H04N3/23 ,  H04N9/28 ,  H01J29/56 ,  H01J29/80 ,  H01J29/96

CPC classification number: H04N9/28

公开(公告)号：ZA7103025B

公开(公告)日：1972-12-27

申请号：ZA7103025

申请日：1971-05-10

Applicant: IBM

Inventor： HENEGHAN M ,  HUGHES M

IPC: G06F9/22 ,  G06F13/12 ,  G11B20/12 ,  G11C ,  G06K

CPC classification number: G06F13/122 ,  G06F9/226 ,  G11B20/1252 ,  G11B2020/1257

公开(公告)号：BR7708542A

公开(公告)日：1978-09-05

申请号：BR7708542

申请日：1977-12-21

Applicant: IBM

Inventor： HENEGHAN M ,  HALLET M ,  SOWTER B

IPC: G06F3/153 ,  G09G1/00 ,  G09G1/04 ,  G09G1/28 ,  G09G5/30 ,  H04N3/23 ,  H04N9/28 ,  H01J29/46

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.

公开(公告)号：SE369790B

公开(公告)日：1974-09-16

申请号：SE650871

申请日：1971-05-19

Applicant: IBM

Inventor： HENEGHAN M ,  HUGHES M

IPC: G06F9/22 ,  G06F13/12 ,  G11B20/12 ,  G06F9/16

Abstract: A significant cost savings is effected in a magnetic disk file control unit with a minimum loss in performance by producing a sequence of control signals, hereinafter referred to as mini-ops, for each of a large number (e.g., 39) of available file commands (often referred to as CCWs). Each mini-op is common to a large number of the commands, and it controls an integrated control unit (adaptor) or channel control unit during portions of Read, Write and Search CCW executions. The preferred embodiment of the improved control unit has been particularly adapted for use with a microprog

公开(公告)号：ZA777591B

公开(公告)日：1979-07-25

申请号：ZA777591

申请日：1977-12-21

Applicant: IBM

Inventor： SOWTER B ,  HALLETT M ,  HENEGHAN M

IPC: G09G1/00 ,  G09G1/04 ,  G09G1/28 ,  G09G5/30 ,  G06F3/153 ,  H04N3/23 ,  H04N9/28 ,  H01J29/56 ,  H01J29/80 ,  H01J29/96

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.

公开(公告)号：ZA713025B

公开(公告)日：1972-12-27

申请号：ZA713025

申请日：1971-05-10

Applicant: IBM

Inventor： HENEGHAN M ,  HUGHES M

IPC: G06F9/22 ,  G06F13/12 ,  G11B20/12 ,  G11C ,  G06K

Abstract: A significant cost savings is effected in a magnetic disk file control unit with a minimum loss in performance by producing a sequence of control signals, hereinafter referred to as mini-ops, for each of a large number (e.g., 39) of available file commands (often referred to as CCWs). Each mini-op is common to a large number of the commands, and it controls an integrated control unit (adaptor) or channel control unit during portions of Read, Write and Search CCW executions. The preferred embodiment of the improved control unit has been particularly adapted for use with a microprog