公开(公告)号：US5774403A

公开(公告)日：1998-06-30

申请号：US873854

申请日：1997-06-12

申请人： Airell Clark, II ,  Billy E. Thayer ,  Daryl E. Anderson ,  Jeffrey A. Hintzman

发明人： Airell Clark, II ,  Billy E. Thayer ,  Daryl E. Anderson ,  Jeffrey A. Hintzman

IPC分类号： G06F1/06 ,  G11C7/22 ,  H03K5/13 ,  H03K5/135 ,  H03L7/00 ,  G11C8/00

CPC分类号： G11C7/22 ,  H03K5/131 ,  H03K5/135

摘要： An integrated circuit process, voltage and temperature fluctuation self-aligning internal delay line circuit and method of operation. A PVT related reference signal is compared to a set of reference signals generated from a system voltage. A delay line is varied based upon the comparison results, generating a delayed timing signal related to PVT fluctuations.

摘要翻译： 集成电路过程，电压和温度波动自调心内部延迟线电路和操作方法。 将PVT相关参考信号与从系统电压产生的一组参考信号进行比较。 延迟线基于比较结果而变化，产生与PVT波动相关的延迟定时信号。

公开(公告)号：US5598119A

公开(公告)日：1997-01-28

申请号：US417335

申请日：1995-04-05

申请人： Billy E. Thayer ,  Scott A. Linn

发明人： Billy E. Thayer ,  Scott A. Linn

IPC分类号： H03K17/16 ,  H03K17/687 ,  H03K19/003 ,  H03K19/0175 ,  H03K19/0944 ,  H03K3/01

CPC分类号： H03K19/00361

摘要： A load adaptive pad driver for integrated circuits provides a substantially constant speed output at the pad regardless of the load connected to the pad. A reference slope signal, based on variables such as fabrication process, and operational voltage and temperature ranges and biased to give a substantially flat response, is compared to the signal output of a resistive-based pad driver circuit. When a transition between output signal levels provided by the pad driver circuit is slower than the reference signal slope, an auxiliary driver circuit is used to compensate. Electromagnetic interference is also reduced via said load adaptive pad driver.

摘要翻译： 用于集成电路的负载自适应焊盘驱动器在焊盘上提供基本恒定的速度输出，而不管连接到焊盘的负载如何。 基于电阻式焊盘驱动器电路的信号输出，将比较例如制造工艺，工作电压和温度范围的参考斜率信号与偏置以给出基本上平坦的响应相比较。 当由焊盘驱动电路提供的输出信号电平之间的转变比参考信号斜率慢时，辅助驱动电路被用于补偿。 电磁干扰也通过所述负载自适应焊盘驱动器减小。

公开(公告)号：US5289112A

公开(公告)日：1994-02-22

申请号：US948274

申请日：1992-09-21

申请人： Charles A. Brown ,  Billy E. Thayer ,  Rajeev Badyal

发明人： Charles A. Brown ,  Billy E. Thayer ,  Rajeev Badyal

IPC分类号： H01L33/00 ,  B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G05F1/46 ,  G05F3/24 ,  G06K15/12 ,  G05F3/26

CPC分类号： G06K15/1261 ,  G05F1/468 ,  G05F3/24

摘要： A programmable power supply for driving LEDS is disclosed that includes a reference current leg and a number of output current legs. Both the reference current leg and the output current legs are further comprised of a plurality of parallel driver FET-control FET pairs, in which the driver and control FETs are connected in series. The driver FETs are biased by a reference voltage that provides a predetermined maximum output current. The control FETs are individually selected to provide a controlled output current. The individual control voltage is either a positive voltage, which disables the control FET, or a predetermined cascode voltage that places the control FET at or into the high output impedance saturation conduction region. By placing the control FETs into the saturation region, the output current is substantially insensitive to voltage fluctuations at the output

摘要翻译： 公开了一种用于驱动LEDS的可编程电源，其包括参考电流支路和多个输出电流支路。 参考电流支路和输出电流支路还包括多个并联驱动器FET控制FET对，其中驱动器和控制FET串联连接。 驱动器FET被提供预定最大输出电流的参考电压偏置。 控制FET被单独选择以提供受控的输出电流。 单独的控制电压是正电压，其禁用控制FET，或者将控制FET放置在高输出阻抗饱和导通区域中的预定的共源共栅电压。 通过将控制FET置于饱和区域中，输出电流基本上对输出端的电压波动不敏感

公开(公告)号：US5099192A

公开(公告)日：1992-03-24

申请号：US597259

申请日：1990-10-12

申请人： Billy E. Thayer ,  Charles A. Brown ,  Donald M. Reid ,  Steven Kalata

发明人： Billy E. Thayer ,  Charles A. Brown ,  Donald M. Reid ,  Steven Kalata

IPC分类号： B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G06K15/12 ,  H01L33/00

CPC分类号： G06K15/1247 ,  B41J2/45

摘要： A power supply circuit for an LED print head has a reference current source connected to a printer system reference voltage for providing a second reference voltage for an individual, integrated circuit chip. The reference current source is controlled by an operational amplifier, the output of which comprises the second reference voltage. A plurality of output driver FETs are biased by the reference voltage. Each output driver FET provides current to an associated LED responsive to a data signal. A plurality of control FETs are connected in parallel with each other and in series with each output driver FET for varying the LED output current responsive to programming data signals. A second group of control FETs is interposed in the feedback loop of the operational amplifier for varying the second reference voltage responsive to a different set of programming data signals.

公开(公告)号：US4052604A

公开(公告)日：1977-10-04

申请号：US650211

申请日：1976-01-19

申请人： David Steven Maitland ,  Billy E. Thayer

发明人： David Steven Maitland ,  Billy E. Thayer

IPC分类号： G06F7/50 ,  G06F7/503

CPC分类号： G06F7/503 ,  G06F2207/3876

摘要： A binary adder employs separate summing and carry circuitry within each digit to optimize the speed of operation of the adder. Carry bits of less significant digits are calculated independently of corresponding sum bits, thus allowing propagation of such carry bits to more significant digits before completion of the summation of the less significant digits.

公开(公告)号：US4864216A

公开(公告)日：1989-09-05

申请号：US300004

申请日：1989-01-19

申请人： Steven Kalata ,  Donald M. Reid ,  Charles A. Brown ,  Billy E. Thayer

发明人： Steven Kalata ,  Donald M. Reid ,  Charles A. Brown ,  Billy E. Thayer

IPC分类号： G05F1/56 ,  G06K15/12

CPC分类号： G05F1/561 ,  G06K15/1247

摘要： A power supply circuit for an LED print head has a reference current source connected to a printer system reference voltage for providing a second reference voltage for an individual, integrated circuit chip. A plurality of substantially similar field effect transistors have their gates connected to the chip reference voltage for providing substantially similar current to each of a plurality of light emitting diodes. The current is enabled to each such LED by the presence or absence of a data signal. A reference resistor in the reference current source permits adjustment so that each of a plurality of integrated circuit chips can provide substantially similar current to each of a plurality of LED dice, or adjust the current level, if required, to achieve similar light output from each LED.

公开(公告)号：US5781045A

公开(公告)日：1998-07-14

申请号：US706377

申请日：1996-08-30

申请人： Rajan Walia ,  Billy E. Thayer

发明人： Rajan Walia ,  Billy E. Thayer

IPC分类号： H03K17/16 ,  H03K17/687 ,  H03K19/003 ,  H03K3/00

CPC分类号： H03K17/164 ,  H03K19/00361

摘要： A predriver circuit for current switching, di/dt, noise control for high current load devices is disclosed. Parallel weak pull up and pull down circuit paths are combined with strong pull up and pull down circuit paths, respectively, to provide control over the rate of change of current through the load during predetermined turn-on and turn-off time periods. Predriver control for both NMOS driver, current sink NMOS, and PMOS driver, current source PMOS, are demonstrated. The predriver circuit provides control of the rate of current switching through the load without excessive delay in fully turning on or off the load device.

摘要翻译： 公开了一种用于大电流负载装置的电流切换，di / dt，噪声控制的预驱动电路。 并联弱上拉和下拉电路路径分别与强上拉和下拉电路路径组合，以提供在预定导通和关断时间段期间对通过负载的电流变化率的控制。 展示了NMOS驱动器，电流源NMOS和PMOS驱动器，电流源PMOS的预驱动器控制。 预驱动电路可以控制通过负载的电流切换速率，而不会在完全打开或关闭负载装置的过程中延迟。