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41. 发明授权

US4064406A Generator for producing a sawtooth and a parabolic signal 失效
标题翻译：用于产生锯齿波和抛物线信号的发生器
公开(公告)号：US4064406A
公开(公告)日：1977-12-20
申请号：US708865
申请日：1976-07-26
申请人： Robert Tiemeijer
发明人： Robert Tiemeijer
IPC分类号： H04N3/16 , H03K4/04 , H03K4/501 , H03K4/90 , H04N3/23 , H04N3/233 , H03K4/08 , H03K4/84
CPC分类号： H04N3/233 , H03K4/04
摘要： A generator suitable for producing a sawtooth and a parabolic signal for the line or field deflection in a television system. The generator is provided with two dc coupled, series-connected difference amplifiers with feedback, which are each part of an associated integrating circuit. Via a peak detection circuit the output of the second difference amplifier is connected to the non-inverting input of the first difference amplifier. The second integrating circuit has been rated in such a way that the peak-peak value of the parabolic signal is half that of the sawtooth signal, while independent of the peak-peak value adjustment the ground potential is present in both signals in the center of trace; consequently there are no centering difficulties.
摘要翻译：适合于产生用于电视系统中的线或场偏转的锯齿波和抛物线信号的发生器。发生器配有两个具有反馈的直流耦合，串联连接的差分放大器，它们是相关的积分电路的每一部分。通过峰值检测电路，第二差分放大器的输出连接到第一差分放大器的非反相输入端。第二个积分电路的额定值是这样一种方式：抛物线信号的峰值值是锯齿波信号的峰值值，而峰值峰值调整接地电位独立于两个信号的中心位置跟踪; 因此没有中心的困难。

42. 发明授权

US4002927A Complementary FET pulse control circuit 失效
标题翻译：互补FET脉冲控制电路
公开(公告)号：US4002927A
公开(公告)日：1977-01-11
申请号：US579813
申请日：1975-05-22
申请人： Hideo Nakamura , Akira Iga
发明人： Hideo Nakamura , Akira Iga
IPC分类号： H03K4/501 , H03K4/06 , H03K4/50 , H03K5/01 , H03K5/02 , H03K17/00
CPC分类号： H03K5/02 , H03K4/06 , H03K4/50 , H03K5/01 , Y10S420/901 , Y10S428/93
摘要： A pulse control circuit comprising a first FET (Field Effect Transistor), put into the conductive state in response to an input pulse signal, a first time constant circuit charged when the first FET is put in the conductive state, a second FET put into the conductive state with the charging voltage of the first time constant circuit, and a second time constant circuit discharging the charged electricity in the first time constant circuit when the second FET is put in the conductive state.
摘要翻译：一种脉冲控制电路，包括：第一FET（场效应晶体管），响应于输入脉冲信号而处于导通状态;第一时间常数电路，当第一FET被置于导通状态时被充电;第二FET放入具有第一时间常数电路的充电电压的导通状态，以及当第二FET处于导通状态时，在第一时间常数电路中放电充电电力的第二时间常数电路。

43. 发明授权

US3995232A Integrated circuit oscillator 失效
标题翻译：集成电路振荡器
公开(公告)号：US3995232A
公开(公告)日：1976-11-30
申请号：US573912
申请日：1975-05-02
申请人： Ronald C. Laugesen
发明人： Ronald C. Laugesen
IPC分类号： H03K3/354 , H03K4/501 , H03B5/12
CPC分类号： H03K3/354 , H03K3/3545 , H03K4/501
摘要： An integrated circuit oscillator includes a timing circuit and a bistable circuit for controlling the timing circuit. The timing circuit includes a capacitor and a pair of field effect transistors (FET), one of which is employed for charging the capacitor and the other of which is employed for discharging the capacitor. A first stage having a relatively low trip voltage is responsive to a low level of charge on the capacitor for actuating the bistable circuit to a first state and a second stage having a relatively high trip voltage is responsive to a high level of charge on the capacitor for actuating the bistable circuit to a second state. The charging and discharging FET's are rendered conductive in response to the first and second states, respectively, of the bistable circuit, such that the capacitor is both charged and discharged over relatively long time periods. A pair of clamping circuits connected to the charging and discharging FET's reduce frequency variations which would normally occur with variations in process parameters and variations in the voltage level of the power supply.
摘要翻译：集成电路振荡器包括定时电路和用于控制定时电路的双稳态电路。定时电路包括电容器和一对场效应晶体管（FET），其中一个用于对电容器充电，另一个用于放电电容器。具有相对低的跳闸电压的第一级响应于电容器上的低电荷电平，以将双稳态电路致动到第一状态，并且具有相对高的跳闸电压的第二级响应电容器上的高电平用于致动双稳态电路到第二状态。充电和放电FET分别响应于双稳态电路的第一和第二状态而导通，使得电容器在相对长的时间段内被充电和放电。连接到充电和放电FET的一对钳位电路降低了通常随着工艺参数的变化和电源电压电平的变化而发生的频率变化。

44. 发明授权

US3947724A Variable-frequency sweep generator circuit 失效
标题翻译：变频扫频发生电路
公开(公告)号：US3947724A
公开(公告)日：1976-03-30
申请号：US521661
申请日：1974-11-07
申请人： Erich Geiger
发明人： Erich Geiger
IPC分类号： H03K4/501 , H01J29/74
CPC分类号： H03K4/501
摘要： An improved sweep generator circuit suitable for deflection circuits in television receivers conventionally includes a condenser chargeable through a resistance to establish the sweep. A resistive voltage divider and a threshold comparator circuit are each arranged parallel to the condenser. The comparator circuit is triggerable to establish a low impedance discharge path across the condenser when the charging voltage across the condenser exceeds a normal reference voltage from the voltage divider. The frequency of the generator is made variable in response to a synchronization frequency within predetermined limits by shunting a resistance of the voltage divider by a control resistance through an electronic switch that is triggerable by the sync pulse train. Normally the minimum sync interval determins the heighest frequency of the sweep generator; if an additional (disturbance) pulse occurs within such minimum sync interval to prematurely establish the shunt connection of the control resistance, the condenser will not have had time to charge up to a value sufficient to reach the then-reduced reference voltage, and the comparator circuit will remain in its high impedance condition until the condenser voltage has attained a value equal to the normal reference voltage of the divider.
摘要翻译：适用于电视接收机中的偏转电路的改进的扫描发生器电路通常包括可通过电阻进行充电的电容器，以建立扫描。电阻分压器和阈值比较器电路每个平行于冷凝器布置。当电容器两端的充电电压超过分压器的正常参考电压时，比较器电路可触发，以建立冷凝器两端的低阻抗放电路径。通过可由同步脉冲串可触发的电子开关通过控制电阻分流分压器的电阻，使发生器的频率响应于预定限制内的同步频率而变化。通常最小同步间隔决定扫描发生器的最高频率; 如果在这样的最小同步间隔内发生额外的（干扰）脉冲，以过早建立控制电阻的分流连接，则冷凝器将不会有时间充电到足以达到减小的参考电压的值，并且比较器电路将保持其高阻抗状态，直到电容器电压达到等于分压器的正常参考电压的值。

45. 发明授权

US3718832A Apparatus for producing ramp signals and an intensity control signal in response to digital data, particularly for a crt vector generator 失效
标题翻译：用于产生RAMP信号的设备和针对数字数据的强度控制信号，特别适用于CRT矢量发生器
公开(公告)号：US3718832A
公开(公告)日：1973-02-27
申请号：US3718832D
申请日：1970-08-21
申请人： INFORMATION DISPLAYS INC
发明人： PREMRU B , NASH J
IPC分类号： G09G1/08 , H03K4/501 , H01J29/70
CPC分类号： G09G1/08 , H03K4/501
摘要： A vector generator is described operating on a constant writing speed basis for larger vectors and on a constant time basis for small vectors. The generator utilizes X,Y. Delta X, Delta Y and Delta Max digital data, Delta Max being the greater in magnitude of Delta X and Delta Y. A feedback control amplifier supplied with a constant input signal has two feedback loops. One loop includes a D/A attenuator supplied with Delta Max and the other includes a bias source which limits the output to a predetermined value for small values of Delta Max. The output of the D/A attenuator is used to produce an intensity control signal which varies with vector length in the region where limiting takes place. The control amplifier output is fed to a difference amplifier having a transistor-controlled feedback circuit to produce a current accurately proportional to the control amplifier output, and another transistor having an input circuit like that of the feedback transistor and supplied with the same input supplies charging current to a ramp capacitor. The ramp signal is compared with a reference to produce a ramp stop signal. Ramp start and stop signals are delayed and gate the intensity control signal, and the delayed stop signal is used to terminate the ramp rise. The ramp signals are supplied to D/A amplifiers controlled by the Delta X and Delta Y digital data to produce CRT deflection waves.
摘要翻译：描述了对于较大的向量以及对于小矢量的恒定时间基于恒定的写入速度的矢量发生器。发电机利用X，Y。 DELTA X，DELTA Y和DELTA Max数字数据，DELTA Max在DELTA X和DELTA Y的幅度较大。提供恒定输入信号的反馈控制放大器具有两个反馈环路。一个环路包括一个DELTA Max提供的D / A衰减器，另一个包括一个偏置源，它将输出限制为DELTA Max的较小值的预定值。 D / A衰减器的输出用于产生在发生限制的区域中随矢量长度变化的强度控制信号。控制放大器输出被馈送到具有晶体管控制的反馈电路的差分放大器，以产生与控制放大器输出精确成正比的电流，另一个晶体管具有类似于反馈晶体管的输入电路并且被提供相同的输入电源充电电流到斜坡电容。将斜坡信号与参考值进行比较以产生斜坡停止信号。斜坡启动和停止信号被延迟并且对强度控制信号进行门控，并且延迟停止信号用于终止斜坡上升。斜坡信号提供给由DELTA X和DELTA Y数字数据控制的D / A放大器，以产生CRT偏转波。

46. 发明授权

US3611176A Frequency controlled oscillator 失效
标题翻译：频率控制振荡器
公开(公告)号：US3611176A
公开(公告)日：1971-10-05
申请号：US3611176D
申请日：1970-07-31
申请人： RCA CORP
发明人： CHRISTOPHER TODD J
IPC分类号： H03K3/0231 , H03K4/06 , H03K4/501 , H03K3/282
CPC分类号： H03K3/0231 , H03K4/06 , H03K4/501
摘要： An oscillator circuit employs first and second emitter coupled transistors in a switch configuration. First and second trip voltages are developed by a voltage divider network in conjunction with a third transistor and are applied to the base of the second transistor. The third transistor regeneratively aids in switching conduction states of the second transistor and changes the trip voltage applied to the base of the second transistor as well as in the input signal to an integration network coupled to the base of the first transistor to sustain oscillations. Frequency control is effected by coupling the collector-to-emitter current path of a fourth transistor in parallel with the collector-to-emitter current path of the second transistor. An automatic frequency control (AFC) voltage is applied to the base of the fourth transistor to cause the second and third transistors to switch in response to the AFC control signal instead of the fixed lower trip voltage, thereby varying the frequency oscillation of the circuit.

47. 发明授权

US3022469A Voltage to frequency converter 失效
标题翻译：电压到变频器
公开(公告)号：US3022469A
公开(公告)日：1962-02-20
申请号：US33860
申请日：1960-01-04
申请人： BAHRS GEORGE S , MCWHORTER MALCOLM M , MARTIN DALTON W
发明人： BAHRS GEORGE S , MCWHORTER MALCOLM M , MARTIN DALTON W
IPC分类号： H03K4/501 , H03K7/06
CPC分类号： H03K7/06 , H03K4/501

48. 发明授权

US11799459B2 Oscillator circuit 有权
公开(公告)号：US11799459B2
公开(公告)日：2023-10-24
申请号：US17705813
申请日：2022-03-28
申请人： LAPIS TECHNOLOGY CO., LTD.
发明人： Seiichiro Sasaki
IPC分类号： H03K4/502 , H03K19/20 , H03K3/354 , H03K3/0231 , H03B5/24 , H03K3/03 , H03K4/501
CPC分类号： H03K4/502 , H03B5/24 , H03K3/0231 , H03K3/03 , H03K3/354 , H03K4/501 , H03K19/20
摘要： An oscillator circuit includes a first comparator that outputs a first signal indicative of a comparison result between an input potential and a threshold, a second comparator that outputs a second signal indicative of a comparison result between an input potential and the threshold, a RS flip-flop circuit that receives the first signal and the second signal and outputs first and second oscillation signals, a first charge/discharge unit that charges and discharges a first capacitor based on the first oscillation signal, a second charge/discharge unit that charges and discharges a second capacitor based on the second oscillation signal, a first dummy switch controlled to be on and off according to the second oscillation signal and adding a predetermined capacity to a first node, and a second dummy switch controlled to be on and off according to the first oscillation signal and adding a predetermined capacity to a second node.

49. 发明公开

US20230336165A1 LOW POWER CURRENT INTEGRATION DAC RAMP SETTLING ASSIST CIRCUIT 审中-公开
公开(公告)号：US20230336165A1
公开(公告)日：2023-10-19
申请号：US17659041
申请日：2022-04-13
申请人： OMNIVISION TECHNOLOGIES, INC.
发明人： Tao Sun
IPC分类号： H03K4/501 , H04N5/378 , H03K4/56
CPC分类号： H03K4/501 , H04N5/378 , H03K4/56
摘要： A ramp generator includes an operational amplifier having an output to generate a ramp signal. An integration current source is coupled to a first input and a reference voltage is coupled to a second input of the operational amplifier. A feedback capacitor and a reset switch are coupled between the first input and the output of the operational amplifier. The reset switch is turned on to reset the ramp generator. A ramp event is configured to be generated in the ramp signal at the output of the operational amplifier in response to the reset switch being turned off. An assist current source is coupled between the output of the operational amplifier and ground. The assist current source is configured to conduct an assist current from the output of the operational amplifier to ground in response to the reset switch being turned off.

50. 发明申请

US20190222204A1 AUTO-TUNED RAMP GENERATOR 审中-公开
公开(公告)号：US20190222204A1
公开(公告)日：2019-07-18
申请号：US15873270
申请日：2018-01-17
申请人： STMICROELECTRONICS S.R.L.
发明人： Alberto CATTANI , Alessandro GASPARINI , Alessandro BERTOLINI
IPC分类号： H03K4/90 , H03K4/501 , H03K3/011 , H03K3/023
CPC分类号： H03K4/90 , H03K3/011 , H03K3/023 , H03K4/501
摘要： An auto-tuned ramp generator and a method for generating a sawtooth signal are provided. In the method and apparatus, a sawtooth signal is compared to a first reference voltage and a second reference voltage. In response to determining that the sawtooth signal does not exceed the first reference voltage, the voltage level of the sawtooth signal is increased. In response to determining that the sawtooth signal exceeds the second reference voltage, the voltage level of the sawtooth signal is decreased. The voltage level the sawtooth signal is retained if the sawtooth signal remains between the first and second reference voltages.

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