Memory drive system of a DC type of plasma display panel
    1.
    发明授权
    Memory drive system of a DC type of plasma display panel 失效
    直流型等离子显示面板的内存驱动系统

    公开(公告)号:US5920295A

    公开(公告)日:1999-07-06

    申请号:US825101

    申请日:1997-03-27

    IPC分类号: G09G3/282 G09G3/28

    CPC分类号: G09G3/282

    摘要: In a memory drive system of a DC type of plasma display panel, scan signals are applied to scan electrodes connected to the DC type of plasma display panel, with the scan signals each comprising a priming scan pulse for generating the priming discharge, a write scan pulse for generating the write discharge, and a sustain pulse train for generating the sustain discharge. The priming scan pulse, the write scan pulse and the sustain pulse train are sequentially shifted on a time basis for each scan signal. To each of the data electrodes connected to the DC type of plasma display panel, a data signal is applied in which, only when the write discharge is not to be generated, is a non-write pulse formed, which offers a turn-off level during an applying period of time for the write scan pulse, and which maintains a turn-on level when the write discharge is to be generated and during other periods of time except the applying period of time for the write scan pulse.

    摘要翻译: 在DC型等离子体显示面板的存储驱动系统中,将扫描信号施加到连接到DC型等离子体显示面板的扫描电极,扫描信号各自包括用于产生起动放电的起动扫描脉冲,写入扫描 用于产生写放电的脉冲,以及用于产生维持放电的维持脉冲串。 针对每个扫描信号,基于时间基准顺序移位初始扫描脉冲,写入扫描脉冲和维持脉冲序列。 对于连接到DC型等离子体显示面板的每个数据电极,应用数据信号,其中仅当不产生写入放电时,形成非写入脉冲,其提供关断电平 在写入扫描脉冲的施加期间,并且当写入放电将被产生时,以及除写入扫描脉冲的施加周期之外的其它时间段期间保持导通电平。

    Double-resolution optical system for electrophotographic printer
    2.
    发明授权
    Double-resolution optical system for electrophotographic printer 失效
    用于电子照相打印机的双分辨率光学系统

    公开(公告)号:US5835120A

    公开(公告)日:1998-11-10

    申请号:US542063

    申请日:1995-10-12

    IPC分类号: B41J2/45 B41J2/47

    CPC分类号: B41J2/451

    摘要: Light emitted from an array of light-emitting elements in an electrophotographic printer is transmitted through a birefringent plate that deflects light polarized in a first plane but does not deflect light polarized in a second plane perpendicular to the first plane, and through a polarization switching device that is controlled by an electrical signal so as to selectably transmit light polarized in either the first plane or the second plane. The transmitted light illuminates a photosensitive medium. Each light-emitting element can illuminate two dots on the photosensitive medium, depending on the state of the polarization switching device, thereby doubling the dot resolution.

    摘要翻译: 从电子照相打印机中的发光元件阵列发射的光透过双折射板,该双折射板使偏振在第一平面中的光偏转,但不偏转垂直于第一平面的第二平面偏振的光,并且通过偏振切换装置 其由电信号控制,以便可选择地透射在第一平面或第二平面中偏振的光。 透射光照射光敏介质。 根据偏振切换装置的状态,每个发光元件可以照射光敏介质上的两个点,从而使点分辨率加倍。

    Method of memory-driving a DC gaseous discharge panel and circuitry
therefor
    3.
    发明授权
    Method of memory-driving a DC gaseous discharge panel and circuitry therefor 失效
    存储器驱动DC气体放电面板的方法及其电路

    公开(公告)号:US5739799A

    公开(公告)日:1998-04-14

    申请号:US671711

    申请日:1996-06-28

    IPC分类号: G09G3/282 G09G3/28

    CPC分类号: G09G3/282

    摘要: A method of memory-driving a DC gaseous discharge panel and circuitry therefor are disclosed. To generate a write discharge on a desired display cell, while a scan pulse Pscn having a pulse width of .tau.scn is applied to a cathode associated with the cell, a display anode is held in its high level or ON level. To prevent the write discharge from being formed, while the scan pulse Pscn is applied to the cathode, a non-write pulse Pnw having a pulse width of .tau.nw is applied to the display anode. The pulse width .tau.nw is selected such that the duration of the pulse Pnw (.tau.scn-.tau.nw) is shorter than the statistic time lag of the start of a discharge at which a discharge cell generating a write discharge first appears. For a sustain discharge following the write discharge, sustain pulses Psus are applied to the cathode after the scan pulse Pscn for a predetermined period of time such that they do not coincide with the non-write pulses as to the timing. As a result, stable discharge and therefore high quality display is insured even when the scanning period must be reduced in order to, e.g., enlarge a screen.

    摘要翻译: 公开了一种用于存储驱动DC气体放电面板的方法及其电路。 为了在期望的显示单元上产生写入放电,当具有τscn的脉冲宽度的扫描脉冲Pscn被施加到与该单元相关联的阴极时,显示器阳极被保持在其高电平或者接通电平。 为了防止形成写入放电,当扫描脉冲Pscn施加到阴极时,将具有τnw的脉冲宽度的非写入脉冲Pnw施加到显示器阳极。 选择脉冲宽度τnw使得脉冲Pnw(τscn-τnw)的持续时间短于首先出现产生写入放电的放电单元的放电开始的统计时间滞后。 对于在写入放电之后的维持放电,维持脉冲Psus在扫描脉冲Pscn之后被施加到阴极上一段预定的时间段,使得它们与非定时的非写入脉冲不一致。 结果,即使为了例如放大画面而必须减少扫描周期,也保证了稳定的放电和因此高质量的显示。

    Method of memory-driving a plasma display panel with write and sustain
voltages set up independently of each other
    4.
    发明授权
    Method of memory-driving a plasma display panel with write and sustain voltages set up independently of each other 失效
    记忆驱动等离子体显示面板的方法,其中写入和维持电压彼此独立地建立

    公开(公告)号:US5677600A

    公开(公告)日:1997-10-14

    申请号:US548668

    申请日:1995-10-26

    CPC分类号: G09G3/282

    摘要: In a memory drive scheme of a plasma display panel, scan pulses are sequentially applied to scan electrodes and a train of sustain pulses is applied subsequent to the scan pulses to each of the scan electrodes during a certain period of time. A non-write pulse, which offers a turn-off level only when display information directed to the display cells is of a non-display is applied to the display electrodes in synchronism with the scan pulses. A write discharge is initiated for the display cells when the display cells are brought into a display state by applying the scan pulses to the scan electrodes and maintaining the scan electrodes in a turn-on level. The display is sustained in response to the sustain pulse train applied to the scan electrode following the scan pulse and dependent on the turn-on level of the display electrode.

    摘要翻译: 在等离子体显示面板的存储器驱动方案中,扫描脉冲被顺序地施加到扫描电极,并且在一定时间段内将扫描脉冲之后的扫描脉冲串施加到每个扫描电极。 仅当指向显示单元的显示信息为非显示时提供关断电平的非写入脉冲与扫描脉冲同步地施加到显示电极。 当通过将扫描脉冲施加到扫描电极并将扫描电极保持在接通电平来使显示单元进入显示状态时,对显示单元开始写入放电。 响应于在扫描脉冲之后施加到扫描电极的维持脉冲序列并依赖于显示电极的导通电平来维持显示。