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1. 发明授权

US4385326A Video disc systems with plural preemphasis/deemphasis networks 失效
标题翻译：具有多个预加重/去加重网络的视频盘系统
公开(公告)号：US4385326A
公开(公告)日：1983-05-24
申请号：US206945
申请日：1980-11-14
申请人： John G. Amery , James H. Wharton
发明人： John G. Amery , James H. Wharton
IPC分类号： H04N5/93 , G11B20/06 , H03H7/01 , H04N5/92 , H04N5/922 , H04N5/923 , H04N9/79 , H04N9/85 , H04N9/87 , H04N9/491 , H04N5/14
CPC分类号： H03H7/0115 , H04N5/923 , H04N9/79 , H04N9/85 , H04N9/87
摘要： In video recording apparatus a luminance signal is doubly preemphasized by a cascade connection of two networks prior to clipping and application to a frequency modulator. One network has a non-linear phase characteristic and an amplitude response which increases by a predetermined amount over a lower portion of the luminance band and is substantially constant otherwise. The other network has a substantially linear phase response, and a rising amplitude response within the upper portion of the luminance band. The relative amplitude responses of the networks are in a predetermined relationship such that the combination exhibits a frequency dependent variation dominated by the one network over the lower portion of the luminance band and dominated by the other network over the upper portion of the luminance band whereby the luminance signal receives an increase in preemphasis over both portions of its bandwidth and clipping distortion under transient signal conditions is reduced. In video reproducer apparatus, a combination of deemphasis networks imparts a complementary deemphasis characteristic to the preemphasized luminance signal thereby effecting a signal-to-noise ratio enhancement.
摘要翻译：在视频记录装置中，在剪切和应用于频率调制器之前，通过两个网络的级联连接来增强亮度信号。一个网络具有非线性相位特性和在亮度带的下部增加预定量的振幅响应，否则基本上是恒定的。另一个网络具有基本上线性的相位响应，以及亮度带上部的上升幅度响应。网络的相对振幅响应处于预定的关系，使得该组合呈现出在亮度带的下部由一个网络主导的频率相关变化，并且由亮度带的上部由另一个网络控制，由此，亮度信号接收到其带宽的两个部分的预加重的增加，并且减少了瞬态信号条件下的限幅失真。在视频再现装置中，去加重网络的组合对预加重的亮度信号赋予互补的去加重特性，从而实现信噪比增强。

2. 发明授权

US4761587A Multiple frequency horizontal oscillator for video apparatus 失效
标题翻译：用于视频设备的多频水平振荡器
公开(公告)号：US4761587A
公开(公告)日：1988-08-02
申请号：US942894
申请日：1986-12-17
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： H04N5/12 , H04N3/27 , H01J29/70 , H03L7/00
CPC分类号： H04N3/27
摘要： A deflection circuit for a video apparatus is capable of operating at different horizontal rate frequencies in response to the incoming video information rate. In one embodiment, the deflection oscillator input voltage is varied in a cyclical manner to vary the oscillator frequency. When the oscillator frequency corresponds to the frequency of the incoming video information, the input voltage is maintained to maintain the desired oscillator frequency. In an alternate embodiment, a frequency to voltage converter generates the desired oscillator input voltage in response to the incoming video information rate.
摘要翻译：用于视频装置的偏转电路能够响应于输入的视频信息速率在不同的水平速率频率下操作。在一个实施例中，偏转振荡器输入电压以循环方式变化以改变振荡器频率。当振荡器频率对应于输入视频信息的频率时，保持输入电压以保持所需的振荡器频率。在替代实施例中，频率对电压转换器响应于输入的视频信息速率产生期望的振荡器输入电压。

3. 发明授权

US4740877A Power supply drive circuit improvement 失效
标题翻译：电源驱动电路改进
公开(公告)号：US4740877A
公开(公告)日：1988-04-26
申请号：US879739
申请日：1986-06-27
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： H04N3/18 , H04N3/27 , H02M3/335
CPC分类号： H04N3/27
摘要： A power supply for a video display apparatus includes circuitry that produces a pulse width modulated signal in response to the selected horizontal deflection rate. The pulse width modulated signal controls the switching of an FET through a transformer to provide a load circuit operating voltage representative of the deflection frequency. A turn-off signal for the FET is provided to a turn-off transistor from the primary winding of the transformer to insure rapid turn off of the FET.
摘要翻译：用于视频显示设备的电源包括响应于所选择的水平偏转速率产生脉宽调制信号的电路。脉冲宽度调制信号控制FET通过变压器的开关，以提供代表偏转频率的负载电路工作电压。 FET的关断信号从变压器的初级绕组提供给截止晶体管，以确保FET的快速关断。

4. 发明授权

US4357628A Video disc player with burst remover 失效
标题翻译：视频光盘播放器与爆破去除器
公开(公告)号：US4357628A
公开(公告)日：1982-11-02
申请号：US190080
申请日：1980-09-23
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： H04N9/793 , H04N9/79 , H04N9/87 , H04N5/76 , H04N5/79 , H04N9/49
CPC分类号： H04N9/7908 , H04N9/87
摘要： A video disc player includes color burst responsive processing circuitry. A burst killer effectively removes burst from the player output when reproducing monochrome program material whereby an improved quality monochrome picture may be obtained from a color television monitor which may be used with the player. The burst killer is controlled on a field-by-field basis in response to an analog or digital signal manifestation of the reproduced video signal whereby the burst killer is automatically enabled and disabled during reproduction of mixed monochrome-color program material.
摘要翻译：视频光盘播放器包括颜色突发响应处理电路。突发杀手在再现单色节目素材时有效地从播放器输出中消除突发，从而可以从可以与播放器一起使用的彩色电视监视器获得改进的质量单色图像。响应于再现的视频信号的模拟或数字信号表现，逐场控制脉冲串抑制器，从而在混合的单色彩色节目素材的再现期间自动启用和禁用脉冲串抑制器。

5. 发明授权

US4761586A Linearity correction for multiple frequency video apparatus 失效
标题翻译：多频视频设备的线性校正
公开(公告)号：US4761586A
公开(公告)日：1988-08-02
申请号：US945724
申请日：1986-12-23
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： H04N3/23 , H04N3/233 , H04N3/27 , H01J29/70 , H01J29/76
CPC分类号： H04N3/233 , H04N3/27
摘要： A deflection circuit for a video apparatus that operates at multiple line rate deflection frequencies includes an S-shaping correction circuit that provides proper S-shaping of the line deflection current at any of the video apparatus line rate operating frequencies. A first S-shaping capacitor is in series with the deflection winding and also in series with a transformer primary winding. The transformer secondary winding is coupled to one or more capacitors. The secondary winding side capacitors are coupled to the secondary winding circuit in response to a line rate frequency indicative signal in order to form a series combination of the primary and secondary side capacitors. The effective capacitance of the secondary side capacitor is then equal to the actual capacitance value increased by a factor determined by the transformer secondary to primary winding turns ratio.
摘要翻译：用于以多个线路频率偏转频率工作的视频装置的偏转电路包括S形整形校正电路，其在任何视频设备线路速率工作频率下提供线偏转电流的适当的S整形。第一个S整形电容器与偏转绕组串联，也与变压器初级绕组串联。变压器次级绕组耦合到一个或多个电容器。次级绕组侧电容器响应于线路速率频率指示信号耦合到次级绕组电路，以便形成初级和次级侧电容器的串联组合。次级侧电容器的有效电容然后等于实际电容值增加由变压器次级绕组匝数比所确定的因子。

6. 发明授权

US4766390A CRT filament supply for multiple frequency video apparatus 失效
标题翻译： CRT灯丝供应多频视频设备
公开(公告)号：US4766390A
公开(公告)日：1988-08-23
申请号：US20004
申请日：1987-02-27
申请人： James H. Wharton , Peter D. Osman
发明人： James H. Wharton , Peter D. Osman
IPC分类号： H04N3/27 , H04N5/63 , H01J19/82 , H05B39/00
CPC分类号： H04N3/27 , H04N5/63
摘要： A video apparatus capable of operating at different line deflection frequencies incorporates a CRT electron gun assembly heater supply voltage circuit that maintains a constant rms voltage level independent of the line deflection frequency. The heater supply includes a transformer winding located on the line deflection driver transformer. The duty cycle of the developed AC voltage waveform remains substantially constant independent of the line deflection frequency, so that the AC voltage may be applied to the heater circuit.
摘要翻译：能够以不同的线偏转频率工作的视频装置包括CRT电子枪组件加热器电源电压电路，其保持与线偏转频率无关的恒定均方根电压电平。加热器电源包括位于线偏转驱动变压器上的变压器绕组。开发的交流电压波形的占空比与线路偏转频率无关地保持基本恒定，从而可以将AC电压施加到加热器电路。

7. 发明授权

US4677350A Raster width correction apparatus for multi scan frequency monitors 失效
标题翻译：多扫描频率监视器光栅宽度校正装置
公开(公告)号：US4677350A
公开(公告)日：1987-06-30
申请号：US897647
申请日：1986-08-18
申请人： James H. Wharton , Lawrence E. Smith
发明人： James H. Wharton , Lawrence E. Smith
IPC分类号： H03K4/68 , H04N3/223 , H04N3/23 , H04N3/233 , H04N3/27 , H01J29/56
CPC分类号： H04N3/223 , H03K4/68 , H04N3/233
摘要： In a deflection circuit that operates in any scan frequency selected from a plurality of frequencies, the supply voltage that is DC-coupled to a first terminal of a trace capacitor is increased when the scan frequency increases. The deflection circuit includes a diode modulator that is controlled by a modulation voltage having an AC component voltage that varies at a vertical rate. The increase in the supply voltage causes an increase in a DC component voltage of the modulation voltage that is coupled to a second terminal of the trace capacitor such that the voltage in the trace capacitor increases in the same proportion as the supply voltage. The proportional increase in the trace capacitor voltage maintains the raster width unchanged when the scan frequency increases.
摘要翻译：在从多个频率选择的任何扫描频率中工作的偏转电路中，当扫描频率增加时，与跟踪电容器的第一端直流耦合的电源电压增加。偏转电路包括由具有以垂直速率变化的AC分量电压的调制电压控制的二极管调制器。电源电压的增加导致与跟踪电容器的第二端子耦合的调制电压的直流分量电压的增加，使得跟踪电容器中的电压以与电源电压相同的比例增加。当扫描频率增加时，跟踪电容电压的比例增加保持光栅宽度不变。

8. 发明授权

US4316210A Video signal processing apparatus 失效
标题翻译：视频信号处理装置
公开(公告)号：US4316210A
公开(公告)日：1982-02-16
申请号：US181989
申请日：1980-08-28
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： H04N5/91 , H04N9/85 , H04N5/76
CPC分类号： H04N5/91 , H04N9/85
摘要： The luminance component of a video signal subject to overshoot is preemphasized and clipped prior to application as a modulating signal to a frequency modulator. Overshoot of the luminance signal, which tends to cause clipping distortion of the modulating signal is minimized by generating a compensating signal representative of the horizontal detail component of the luminance signal. The luminance signal is delayed relative to the compensating signal and subtractively combined therewith prior to application to the clipping circuitry such that the resultant modulating signal exhibits preshoot and reduced overshoot thereby minimizing the clipping distortion. Compensation is effectively disabled for luminance signal overshoots below the clipping level by means of an adjustable coring circuit in the compensating signal path whereby luminance signals exhibiting overshoot below the clipping level are not distorted by the compensating signal.
摘要翻译：经过调制的视频信号的亮度分量在作为调制信号施加到频率调制器之前被预加重和削波。通过产生表示亮度信号的水平细节分量的补偿信号，倾向于导致调制信号的削波失真的亮度信号的过冲被最小化。亮度信号相对于补偿信号被延迟，并且在施加到限幅电路之前与其减法地组合，使得所得到的调制信号表现出预先和减小的过冲，从而使削波失真最小化。通过补偿信号路径中的可调节的取芯电路，对削弱电平以下的亮度信号超调的补偿被有效地禁止，由此在削波电平以下表现出超调的亮度信号不被补偿信号失真。

9. 发明授权

US4658342A Dual feedback switching power supply regulator for isolated chassis 失效
标题翻译：用于隔离机箱的双反馈开关电源调节器
公开(公告)号：US4658342A
公开(公告)日：1987-04-14
申请号：US793421
申请日：1985-10-31
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： H04N5/63 , H02M3/28 , H02M3/335 , H04N3/185
CPC分类号： H04N3/185 , H02M3/33523
摘要： A regulating switched mode power supply for a video display apparatus provides electrical isolation between the load circuits and the AC line. A power transformer incorporates a regulator winding referenced to AC line ground potential. First and second feedback circuits develop first and second feedback signal components that are applied to a regulator control circuit which controls the conduction of the power supply switching transistor. The two feedback circuits have different time constants to accurately monitor load circuit loading conditions in order to maintain load circuit voltage level regulation.
摘要翻译：用于视频显示装置的调节开关模式电源在负载电路和AC线之间提供电隔离。电源变压器包含参考交流线路地电位的调节绕组。第一和第二反馈电路产生施加到控制电源开关晶体管的导通的调节器控制电路的第一和第二反馈信号分量。两个反馈电路具有不同的时间常数，以精确监测负载电路负载条件，以保持负载电路电压电平调节。

10. 发明授权

US4644231A Video data display driver stage 失效
标题翻译：视频数据显示驱动阶段
公开(公告)号：US4644231A
公开(公告)日：1987-02-17
申请号：US674989
申请日：1984-11-29
申请人： James H. Wharton
发明人： James H. Wharton
IPC分类号： G09G1/00 , H01J29/52
CPC分类号： G09G1/002
摘要： In a video monitor for display alphanumeric data on a kinescope display screen, a kinescope driver transistor receives binary video data signals at a low impedance emitter input electrode and provides high level video data output signals to the kinescope from a collector output electrode. A source of adjustable control voltage is coupled to the base electrode of the driver transistor for varying the intensity of the data display.
摘要翻译：在显像管显示屏上显示字母数字数据的视频监视器中，显像管驱动晶体管在低阻抗发射极输入电极处接收二进制视频数据信号，并从集电极输出电极向显像管提供高电平视频数据输出信号。可调控制电压源耦合到驱动晶体管的基极，以改变数据显示的强度。

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