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    POLICY-BASED CONNECTIVITY
    1.
    发明申请
    POLICY-BASED CONNECTIVITY 审中-公开
    基于政策的联系

    公开(公告)号：WO2004051440A3

    公开(公告)日：2004-09-02

    申请号：PCT/GB0304824

    申请日：2003-11-07

    Applicant: IBM ,  IBM UK

    Inventor： MASTRIANNI STEVEN ,  CHEFALAS THOMAS ,  BANTZ DAVID FREDERICK

    IPC: H04L29/06 ,  H04L12/28

    CPC classification number: H04L63/105 ,  H04L63/20

    Abstract: The system disclosed uses policy directives to establish and regulate connectivity on a computer system. A policy profile is applied to the computer system that determines how and when connections can be made, and the devices on which the connections can be made.

    Abstract translation: 所公开的系统使用策略指令来建立和调节计算机系统上的连接性。 策略配置文件应用于计算机系统，该计算机系统确定可以进行连接以及何时进行连接以及可以进行连接的设备。

    7.
    发明专利
    未知

    公开(公告)号：AT199617T

    公开(公告)日：2001-03-15

    申请号：AT94105696

    申请日：1994-04-13

    Applicant: IBM

    Inventor： AHMADI HAMID ,  BANTZ DAVID FREDERICK ,  BAUCHOT FREDERIC JACQUES ,  KRISHNA ARVIND ,  LA MAIRE RICHARD ORVILLE ,  NATARAJAN KADATHUR S

    IPC: H04J3/00 ,  H04B7/24 ,  H04J3/16 ,  H04L12/28 ,  H04L12/56 ,  H04B7/204

    Abstract: A Medium Access (MAC) Protocol is utilized for wireless radio access for a plurality of remote stations to a base station on a LAN. The MAC protocol is based on a reservation scheme for user data traffic and a random access technique for control and signalling traffic. There is a time division fixed frame structure in which time is slotted, and time slots are grouped into fixed frames consisting of data and control subframes or periods. The fixed frame structure consists of three periods (A, B, and C) along with their respective headers. The first period, the A period, is the outbound channel which is used exclusively for data transfer from the base station to the remote stations. The following period, the B period, is the inbound channel that is used for contention-free data transfer from the remote stations to the base station. The allocation of the data slots in the A and B periods is performed by the base station. The last period of the frame, designated as the C period, is the control channel used for the transmission of reservation requests and data from the remote stations to the base station in a random-access contention mode using a slotted Aloha protocol. The duration of the three periods may be varied using a movable boundary technique. The base station estimates the number of actively transmitting remote stations utilizing feedback information from the remote stations. This estimate is broadcast to the remote stations as control indicia to control their transmission attempts in the C period, thus yielding high transmission efficiency.

    8.
    发明专利
    未知

    公开(公告)号：DE3485765T2

    公开(公告)日：1993-01-28

    申请号：DE3485765

    申请日：1984-06-08

    Applicant: IBM

    Inventor： BANTZ DAVID FREDERICK ,  MALABY DAVEY LEE ,  SHOLTZ PAUL NORMAN

    IPC: G09G5/40 ,  G06T3/00 ,  G09G5/00 ,  G09G5/14 ,  G09G5/42 ,  G09G1/16

    Abstract: Pixel representations for each of a plurality of superimposed (or splitscreen) display portions are accumulated in a band buffer prior to being transferred to the display. The actual pixel representations are made available to the band buffer from an image memory, with addresses provided by a display list memory.This system mimimizes the need for buffering and high speed storage to service the video, by addressing first the display list memory, then in turn using the content of the display list memory to address the image storage, and then in turn using the content of the image storage as the actual pixel representations for accumulation in the band buffer. Two band buffers operate alternatively. The current band buffer is feeding a band of pixel representations to the video shift register while the next band buffer is accumulating the pixel representations of the subsequent video display band.The band buffer accumulates actual pixel representations equivalent to the related band of the display. The pixel representations sent to the band buffer from image memory are gated by controls which ensure that the proper pixel prevails in the case of a composite display made up of a primary display with a secondary display which might have higher priority, as for example, a text announcement superimposed over a normal entertainment program image.

    9.
    发明专利
    未知

    公开(公告)号：DE3485765D1

    公开(公告)日：1992-07-16

    申请号：DE3485765

    申请日：1984-06-08

    Applicant: IBM

    Inventor： BANTZ DAVID FREDERICK ,  MALABY DAVEY LEE ,  SHOLTZ PAUL NORMAN

    IPC: G09G5/40 ,  G06T3/00 ,  G09G5/00 ,  G09G5/14 ,  G09G5/42 ,  G09G1/16

    Abstract: Pixel representations for each of a plurality of superimposed (or splitscreen) display portions are accumulated in a band buffer prior to being transferred to the display. The actual pixel representations are made available to the band buffer from an image memory, with addresses provided by a display list memory.This system mimimizes the need for buffering and high speed storage to service the video, by addressing first the display list memory, then in turn using the content of the display list memory to address the image storage, and then in turn using the content of the image storage as the actual pixel representations for accumulation in the band buffer. Two band buffers operate alternatively. The current band buffer is feeding a band of pixel representations to the video shift register while the next band buffer is accumulating the pixel representations of the subsequent video display band.The band buffer accumulates actual pixel representations equivalent to the related band of the display. The pixel representations sent to the band buffer from image memory are gated by controls which ensure that the proper pixel prevails in the case of a composite display made up of a primary display with a secondary display which might have higher priority, as for example, a text announcement superimposed over a normal entertainment program image.

    10.
    发明专利
    未知

    公开(公告)号：DE69531076T2

    公开(公告)日：2004-05-06

    申请号：DE69531076

    申请日：1995-04-03

    Applicant: IBM

    Inventor： HUANG CHIA-CHI ,  BANTZ DAVID FREDERICK ,  BAUCHOT FREDERIC ,  NATARAJAN KADATHUR SUBRAMANYA ,  NARASIMHAN ANAND ,  WETTERWALD MICHELE MARIE

    IPC: G06F13/00 ,  H04L12/28 ,  H04W24/00 ,  H04W36/08 ,  H04W36/30 ,  H04W84/12 ,  H04Q7/38 ,  H04B7/26 ,  H04B1/713 ,  H04L1/20

    Abstract: Methods for handoff in a wireless communication network comprised of a local area network connected to a plurality of base stations, each of which has a geographic area, defined as a cell, within which mobile stations can communicate with a base station, with each such base station being capable of performing bidirectional wireless communication with one or more of said mobile stations under control of a controller, with communication between base stations and mobile stations being performed by frequency hopping, with there being n available frequency hopping channels in a fixed frequency band, with each channel being of a same fixed duration and having a fixed frequency different than another channel. The handoff method employs structure and techniques for determining by a mobile station that the quality of transmission between it and a current base station has degraded below a predetermined performance level, structure and technique for said mobile station to listen to each of successive frequency channels for a duration substantially less than said fixed duration of a channel until it senses a transmission from another base station, and structure and techniques for transferring control of said mobile station to said another base station in response to the sensed transmission.

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