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    • 4. 发明公开
    • Circuitry for controlling a CRT beam
    • Einrichtung zum Steuern des Strahles einesKathodenstrahlsichtgerätes。
    • EP0086033A2
    • 1983-08-17
    • EP83300068.0
    • 1983-01-06
    • MILTON BRADLEY COMPANY
    • Smith III, JayKarr, Gerald S.
    • G09G1/12A63F9/22
    • G09G1/12
    • Beam characteristics, including writing speed, slope, position and intensity, are controlled by circuitry which includes a single digital-to-analog converter (210) sample-and-hold circuitry (250, 260, 270) and a pair of active integrator circuits (280, 290). A microprocessor is adapted to control these circuit components. A data multiplexer (230) selectively applies the DAC output to a preselected sample-and-hold circuit means. The microprocessor is operative to provide digital words to the DAC representative of the differential X and Y values of a line segment to be drawn. The analog representations of these digital words are coupled to the integrators. The outputs of the active integrators provide the deflection signals causing deflection of the CRT beam. The apparatus is particularly adapted to drawing a series of connected line segments, due to the integrator operation. A line segment length may be scaled simply by varying the time interval the analog signals are applied to the integrators, while the writing speed remains constant. The apparatus can also be adapted to display a pseudo-raster scan field.
    • 包括写入速度,斜率,位置和强度的光束特性由包括单个数模转换器(210)采样保持电路(250,260,270)和一对有源积分电路的电路控制 (280,290)。 微处理器适于控制这些电路部件。 数据多路复用器(230)选择性地将DAC输出施加到预选的采样和保持电路装置。 微处理器可操作以向代表要绘制的线段的差分X和Y值的DAC提供数字字。 这些数字字的模拟表示被耦合到积分器。 有源积分器的输出提供导致CRT束偏转的偏转信号。 由于积分器操作,该装置特别适于绘制一系列连接的线段。 可以通过改变模拟信号施加到积分器的时间间隔来简单地缩放线段长度,而写入速度保持恒定。 该装置还可以适于显示伪光栅扫描场。
    • 5. 发明申请
    • APPARATUS AND METHOD FOR GENERATING A PERIODIC NON-LINEAR WAVEFORM
    • 用于产生周期性非线性波形的装置和方法
    • WO01082483A1
    • 2001-11-01
    • PCT/EP2001/004328
    • 2001-04-13
    • H04N3/16G09G1/04G09G1/12H03K4/00H03K4/02H04N3/233H03K6/04
    • H03K4/00H03K4/026H04N3/2335
    • In a waveform generator according to the first aspect of the invention, a repetitive non-linear waveform is generated by varying the number supplied to the pulse reduction circuit during the repetition period. Consequently, the pulse reduction circuit supplies a number of desired output pulses, which number varies in time corresponding to the varying number. For example, when a lower number is inputted to the pulse reduction circuit during a sub-period of the repetition period, a corresponding lower number of output pulses will be generated. Consequently, a lower number of increment values will be summed or integrated during this sub-period and the waveform changes less steeply.
    • 在根据本发明的第一方面的波形发生器中,通过改变在重复周期期间提供给脉冲降低电路的数量来产生重复非线性波形。 因此,脉冲降低电路提供多个期望的输出脉冲,该数量对应于变化数量而在时间上变化。 例如,当在重复周期的子周期期间将更少的数字输入到脉冲降低电路时,将产生相应较少数量的输出脉冲。 因此,在该子周期期间将较少数量的增量值相加或积分,并且波形不太陡峭地变化。
    • 7. 发明公开
    • Character font display systems
    • Zeichensatzanzeigeeinrichtung。
    • EP0102750A2
    • 1984-03-14
    • EP83304381.3
    • 1983-07-28
    • THE BABCOCK & WILCOX COMPANY
    • Keyes, Marion A.IV
    • G09G1/12
    • G09G5/225
    • A system for producing a cathode ray tube display comprising programmable character fonts utilizes a random access memory (18) in addition to a read only memory (16) for the storage of character fonts. The random access memory (18) is programmable via a microprocessor (12) for the entry of the desired character fonts therein. The microprocessor (12) can access either the read only memory (16) or the random access memory (18), via a display memory (20), for the retrieval of the proper character font for display on a cathode ray tube (38).
    • 用于制造包括可编程字符字体的阴极射线管显示器的系统除了用于存储字符字体的只读存储器(16)之外还使用随机存取存储器(18)。 随机存取存储器(18)可通过微处理器(12)进行编程,以便在其中输入所需字符字体。 微处理器(12)可以经由显示存储器(20)访问只读存储器(16)或随机存取存储器(18),以检索用于在阴极射线管(38)上显示的适当字符字体, 。
    • 9. 发明专利
    • Waveform generator for correcting deflection
    • 用于校正偏差的波形发生器
    • JP2005278208A
    • 2005-10-06
    • JP2005120515
    • 2005-04-19
    • Thomson Consumer Electronics Incトムソン コンシユーマ エレクトロニクス インコーポレイテツドThomson Consumer Electronics,Incorporated
    • GEORGE JOHN BARRETFERNSLER RONALD EUGENETRUSKALO WALTER
    • H04N3/23G09G1/00G09G1/04G09G1/12G09G1/28H04N3/233H04N5/68H04N9/28
    • H04N3/233H04N9/28
    • PROBLEM TO BE SOLVED: To provide a generator for waveform deflection correcting which is capable of generating a deflection corrected waveform with high stability for a CRT display device. SOLUTION: A deflection waveform correction signal generator comprises a multiplication circuit U2 for generating a pincushion correction signal I COR , and a horizontal frequency ramp R is generated by a retrace pulse H ZC which is clipped. Each ramp generator Q2, C2 has an output R coupled to an integration circuit U1 and generates a parabolic shaped signal P. The ramp generators Q2, C2 and the ramp integrator U1 are reset by reset pulses of different durations and a signal P having a region of a non-parabolic shape is obtained. The signal P is coupled to an input of the multiplying circuit U2. A control circuit 300 is coupled to the signal P for maintaining a peak amplitude thereof by being coupled to the ramp generator so as to be controllable. A control loop 400 is coupled to the integrator U1 for controlling an integrator input bias current IT, to generate the signals P at predetermined time intervals. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够为CRT显示装置产生具有高稳定性的偏转校正波形的波形偏转校正发生器。 解决方案:偏转波形校正信号发生器包括用于产生枕形校正信号I COR 的乘法电路U2,并且通过回扫脉冲H ZC产生水平频率斜坡R, / SB>被剪辑。 每个斜坡发生器Q2,C2具有耦合到积分电路U1并且产生抛物线形信号P的输出R.斜坡发生器Q2,C2和斜坡积分器U1由不同持续时间的复位脉冲复位,并且具有区域 获得非抛物线形状。 信号P耦合到乘法电路U2的输入端。 控制电路300耦合到信号P,以通过耦合到斜坡发生器来维持其峰值振幅,从而是可控的。 控制回路400耦合到积分器U1,用于控制积分器输入偏置电流IT,以预定的时间间隔产生信号P. 版权所有(C)2006,JPO&NCIPI