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51. 发明授权

US3924195A Digital sawtooth generator 失效
标题翻译：数字锯齿发生器
公开(公告)号：US3924195A
公开(公告)日：1975-12-02
申请号：US45856274
申请日：1974-04-08
申请人： GEN MOTORS CORP
发明人： MATOUKA MICHAEL F
IPC分类号： H03K4/08 , H03K4/10 , H03K3/37
CPC分类号： H03K4/026 , H03K4/08
摘要： A digital sawtooth waveform generator is disclosed for providing a motor reference signal in a cycloconverter power supply for an induction motor. A series of clock pulses at a frequency J(Fsync) is supplied to the clock input of a binary counter where J is a constant and Fsync is the desired frequency of the input signal to the motor. Preset pulses at a frequency of 2Fsync are supplied to the binary counter whose output is applied to a variable gain digital-to-analog converter. A gain control voltage with a magnitude of VG is applied to the digital-to-analog converter whose output is a current I1 with a magnitude equal to VGK1N where K1 is a constant and N is the count of the binary counter. The current I1 is summed with a current I2 having a magnitude equal to K3VG, where K3 is a constant and where the currents I1 and I2 have opposite polarities, and a biasing current I3. The summed currents form the sawtooth waveform at the frequency 2Fsync. The current I2 establishes a point on the sawtooth waveform about which it is compressed or expanded as the magnitude VG of the gain control voltage is varied and which is independent of the magnitude of the biasing current I3.
摘要翻译：公开了一种用于在用于感应电动机的循环变频器电源中提供电动机参考信号的数字锯齿波形发生器。将频率为J（Fsync）的一系列时钟脉冲提供给二进制计数器的时钟输入，其中J是常数，Fsync是到电机的输入信号的期望频率。频率为2Fsync的预置脉冲提供给二进制计数器，其输出应用于可变增益数模转换器。将幅度为VG的增益控制电压施加到数模转换器，其数字模拟转换器的输出为等于VGK1N的电流I1，其中K1为常数，N为二进制计数器的计数。电流I1与等于K3VG的电流I2相加，其中K3是常数，电流I1和I2具有相反的极性，偏置电流I3。总和电流以2Fsync频率形成锯齿波形。电流I2在锯齿波形上建立一个点，随着增益控制电压的幅度VG的变化，它被压缩或扩展，并且与偏置电流I3的大小无关。

52. 发明授权

US3867703A Sweep generator for linear cathode ray tube display 失效
标题翻译：扫描发生器用于线性阴极射线管显示
公开(公告)号：US3867703A
公开(公告)日：1975-02-18
申请号：US38623773
申请日：1973-08-06
申请人： AMERICAN OPTICAL CORP
发明人： CAVIGELLI GEORGE A
IPC分类号： H03K4/72 , H03K4/10 , H01J29/70
CPC分类号： H03K4/725
摘要： There is disclosed a relatively simple ''''ramp'''' generator for a CRT display which generates the necessary correction current to linearize the sweep across a quasi-flat screen. As in prior art systems, an integrator develops a ramp voltage which is applied to the input of a voltage-to-current converter. However, instead of the input to the integrator being a constant current as in the prior art, the input current is constant only when the yoke current is below a predetermined positive or negative limit. Above the limit, the current at the input of the integrator is inversely proportional to the yoke current. Once the feedback becomes effective in this manner, the yoke current becomes an exponential function of time. By providing double-ended feedback, the yoke current is a symmetrical function of time with respect to its positive and negative portions, and the yoke current exhibits no discontinuities in slope.
摘要翻译：公开了一种用于CRT显示器的相对简单的“斜坡”发生器，其产生必要的校正电流以使跨越准平面屏幕的扫描线性化。与现有技术的系统一样，积分器产生施加到电压 - 电流转换器的输入端的斜坡电压。然而，如现有技术那样，代替积分器的输入为恒定电流，仅当磁轭电流低于预定的正或负极限时，输入电流才是恒定的。高于极限，积分器输入端的电流与磁轭电流成反比。一旦反馈以这种方式生效，磁轭电流就成为时间的指数函数。通过提供双端反馈，轭电流相对于它的正和负部分是对称的时间函数，并且轭电流在斜率上表现出不连续性。

53. 发明授权

US3803500A Method and apparatus for varying the frequency of an alternating voltage 失效
标题翻译：改变电压电压频率的方法和装置
公开(公告)号：US3803500A
公开(公告)日：1974-04-09
申请号：US24893172
申请日：1972-05-01
申请人： HELL R GMBH
发明人： TAUDT H , BRUCKNER W
IPC分类号： H03K6/00 , H04N1/40 , H03B19/00 , H03K4/10
CPC分类号： H04N1/40 , H03K6/00
摘要： A method and apparatus for the timed or pulsed conversion of analog voltages into step or digitalized voltages wherein the clock frequency pulses are converted into a saw-tooth voltage waveform having a statistically irregular frequency and a random variation of shape, the saw tooth voltage is superimposed onto the analog voltage at the conversion, the frequency of the resultant saw-tooth voltage is non-harmonic to the clock frequency.

54. 发明授权

US3743951A Voltage controlled up-down clock rate generator 失效
标题翻译：电压控制上升时钟发生器
公开(公告)号：US3743951A
公开(公告)日：1973-07-03
申请号：US3743951D
申请日：1972-04-26
申请人： US NAVY
发明人： CARROLL J
IPC分类号： H03K4/06 , H03K7/06 , H03K4/10
CPC分类号： H03K4/066 , H03K7/06
摘要： A voltage controlled clock rate generator having a reversible integrator in combination with an analog to digital conversion means in the output controlled by a direct current (D. C.) analog voltage input and a feedback of the digital output to produce a clock frequency directly proportional to the magnitude of the absolute value of the positive or negative D. C. voltage input with both square wave and triangular wave outputs and containing information as to whether the output frequency is a function of a positive or a negative frequency.
摘要翻译：一种电压控制时钟速率发生器，其具有可逆积分器，与由直流（DC）模拟电压输入控制的输出中的模数转换装置组合，以及数字输出的反馈以产生与幅度成正比的时钟频率具有方波和三角波输出的正或负直流电压输入的绝对值的绝对值，并且包含关于输出频率是正或负频率的函数的信息。

55. 发明授权

US3184617A High level sawtooth waveform voltage generator 失效
公开(公告)号：US3184617A
公开(公告)日：1965-05-18
申请号：US19752062
申请日：1962-05-24
申请人： GEN ELECTRIC
发明人： WOOD ROBERT F
IPC分类号： H03K4/10
CPC分类号： H03K4/10

56. 发明授权

US3184616A High level sawtooth waveform voltage generator 失效
标题翻译：高级锯齿波形电压发生器
公开(公告)号：US3184616A
公开(公告)日：1965-05-18
申请号：US19750562
申请日：1962-05-24
申请人： GEN ELECTRIC
发明人： BATES WILLIAM C , TRUE THOMAS T
IPC分类号： H03K4/10
CPC分类号： H03K4/10

57. 发明授权

US2546255A Frequency multiplier 失效
公开(公告)号：US2546255A
公开(公告)日：1951-03-27
申请号：US78210847
申请日：1947-10-25
申请人： CSF
发明人： DANIEL CHARLES
IPC分类号： H03K4/10 , H03K12/00
CPC分类号： H03K4/10 , H03K12/00

58. 发明授权

US2375966A System of television in colors 失效
标题翻译：电视系统的颜色
公开(公告)号：US2375966A
公开(公告)日：1945-05-15
申请号：US25100439
申请日：1939-01-14
申请人： GEORGES VALENSI
发明人： GEORGES VALENSI
IPC分类号： H01J31/04 , H03K4/10 , H03K12/00 , H04N3/04 , H04N3/237 , H04N5/04 , H04N5/067 , H04N9/20 , H04N11/00 , H04N11/12
CPC分类号： H01J31/04 , H03K4/10 , H03K12/00 , H04N3/04 , H04N3/237 , H04N5/04 , H04N5/067 , H04N9/20 , H04N11/00 , H04N11/12

59. 发明授权

US2178772A Two-tube deflecting circuit 失效
标题翻译：双管偏转电路
公开(公告)号：US2178772A
公开(公告)日：1939-11-07
申请号：US10117536
申请日：1936-09-16
申请人： FIRM FERNSEH AG
发明人： HERBERT BAHRING
IPC分类号： H03K4/10 , H03K4/12
CPC分类号： H03K4/10 , H03K4/12

60. 发明授权

US2176973A Cathode ray apparatus 失效
公开(公告)号：US2176973A
公开(公告)日：1939-10-24
申请号：US2447335
申请日：1935-06-01
申请人： EMI LTD
发明人： MICHAEL BOWMAN-MANIFOLD
IPC分类号： H03K4/10
CPC分类号： H03K4/10

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