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    4.
    发明专利
    未知

    公开(公告)号：DE69301128T2

    公开(公告)日：1996-07-04

    申请号：DE69301128

    申请日：1993-04-29

    Applicant: IBM

    Inventor： SAWDON DAVID ,  BEETESON JOHN S ,  BEANLANDS PETER ,  SMITH KENNETH G

    IPC: H01B9/04 ,  H05K9/00

    Abstract: An electrical appliance comprises a power supply cable (70) having a first conductor (200) surrounded by a second conductor (210) for supplying electrical power to the appliance from a domestic electricity mains supply, and a connector (490) connected to cable for detachably connecting the conductors of the cable to first and second voltage signals of the electricity mains supply. In operation, the second conductor (210) is connected to the lower of the voltage signals. The second conductor (210) thus acts as a shield in opposition to electric fields radiating from the cable. The shield improves in efficiency as the lower mains voltage signal approaches Ground potential.

    CRT DISPLAY REDUCES RASTER SIZE DURING STANDBY MODE
    5.
    发明专利
    CRT DISPLAY REDUCES RASTER SIZE DURING STANDBY MODE 未知

    公开(公告)号：GB2264425A

    公开(公告)日：1993-08-25

    申请号：GB9203618

    申请日：1992-02-20

    Applicant: IBM

    Inventor： SAWDON DAVID ,  BEETESON JOHN STUART ,  BEANLANDS PETER

    IPC: G09G1/04 ,  H04N3/223 ,  H04N5/63

    Abstract: This specification concerns cathode ray tube display apparatus comprises a cathode ray tube display screen (10). A beam generator (60,30) is provided for generating at least one electron beam in the cathode ray tube display screen (10) to produce a video image. Also provided is a line timebase circuit (40) for generating a line deflection signal to sequentially address the or each electron beam to successive pixels on the screen (10) in a line of a raster, and a frame timebase circuit (50) for generating an alternating frame deflection signal for sequentially addressing the or each electron beam to successive lines of the raster. The apparatus further comprises a standby circuit (110) connected to the line and frame timebase circuits (40,50). The standby circuit (40,50) switches the deflection signals generated by the timebase circuits (40,50) between first predetermined amplitudes and second predetermined amplitudes, less than the first predetermined amplitudes, in response to a control input (100) switching between first and second predetermined states. Because the amplitudes of the deflection signals are reduced when the display is configured to operate in standby mode, both the power dissipated by, and the stray electric and magnetic fields radiating from the display can be significantly reduced during periods of temporary non-use.

    ANTI-REFLECTION COATING FOR VISUAL DISPLAY SCREENS
    7.
    发明专利
    ANTI-REFLECTION COATING FOR VISUAL DISPLAY SCREENS 未知

    公开(公告)号：CA1249495A

    公开(公告)日：1989-01-31

    申请号：CA438445

    申请日：1983-10-05

    Applicant: IBM

    Inventor： BEETESON JOHN S ,  BEANLANDS PETER

    IPC: G02B1/11 ,  G02B5/28 ,  H01J29/89 ,  G02B1/10

    Abstract: A multilayer anti-reflection coating for the front viewing surface of a visual display unit is fabricated so that its photometric reflectance characteristic has a substantially inverse-photopic shape with its minimum value substantially coincident with the frequency of the maximum of the photopic luminosity curve. Optionally the minimum can be shifted towards the dominant frequency of the ambient lighting within which the visual display unit is used.

    9.
    发明专利
    未知

    公开(公告)号：DE69301128D1

    公开(公告)日：1996-02-08

    申请号：DE69301128

    申请日：1993-04-29

    Applicant: IBM

    Inventor： SAWDON DAVID ,  BEETESON JOHN S ,  BEANLANDS PETER ,  SMITH KENNETH G

    IPC: H01B9/04 ,  H05K9/00

    Abstract: An electrical appliance comprises a power supply cable (70) having a first conductor (200) surrounded by a second conductor (210) for supplying electrical power to the appliance from a domestic electricity mains supply, and a connector (490) connected to cable for detachably connecting the conductors of the cable to first and second voltage signals of the electricity mains supply. In operation, the second conductor (210) is connected to the lower of the voltage signals. The second conductor (210) thus acts as a shield in opposition to electric fields radiating from the cable. The shield improves in efficiency as the lower mains voltage signal approaches Ground potential.

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