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    • 4. 发明授权
    • Control circuit
    • 控制电路
    • US3947733A
    • 1976-03-30
    • US544499
    • 1975-01-27
    • Charles Robert ChapmanJames William Schooler
    • Charles Robert ChapmanJames William Schooler
    • F02D41/06H03H9/00
    • F02D41/064
    • A temperature-actuated circuit for controlling the application of an electronic circuit. In a typical application, the control circuit shunts a circuit which effects enrichment of the fuel mixture for the cold-starting of internal combustion engines. In a preferred embodiment, the control circuit comprises a temperature-dependent resistance, such as a thermistor, which supplies changing voltage with increasing engine temperature to the gate of an SCR. After an interval necessary to attain a predetermined engine temperature, the altered gate voltage triggers the SCR, thereby actuating a relay associated with the enrichment circuit for shunting the enrichment circuit from the fuel injection circuit. Typically, the enrichment circuit alters the width of square wave signals which control fuel delivery, so that bypassing the circuit eliminates the altered wave characteristics and provides leaner, more economical operation.The control circuit components may be selected to provide time delay operation, rather than operation controlled by an external temperature. Also, the control circuit can include features such as manual override and visual and/or audible operation displays.
    • 一种用于控制电子电路的应用的温度驱动电路。 在典型的应用中,控制电路分流电路,其实现用于内燃机冷起动的燃料混合物的浓缩。 在优选实施例中,控制电路包括温度依赖性电阻,例如热敏电阻,其将可变电压随发动机温度升高提供给SCR的栅极。 在达到预定的发动机温度所需的间隔之后,改变的栅极电压触发SCR,从而致动与富集电路相关联的继电器,以从燃料喷射回路分流富集电路。 通常,浓缩电路改变控制燃料输送的方波信号的宽度,从而绕过电路消除了改变的波特性,并提供了更精简,更经济的操作。
    • 8. 发明授权
    • Synchronizing multiple USB controllers to reduce power
    • 同步多个USB控制器以降低功耗
    • US08806100B1
    • 2014-08-12
    • US11613874
    • 2006-12-20
    • John BerendsenRobert Chapman
    • John BerendsenRobert Chapman
    • G06F13/00
    • G06F1/329G06F1/325Y02D10/24
    • Circuits, methods, and apparatus that reduce the power consumed by transactions initiated by a number of USB host controllers. Peripheral devices on a number of USB networks are accessed in a coordinated manner in order to reduce power dissipated by a CPU and other circuits when reading data needed by the host controllers. The resulting memory reads are temporally clustered. This allows the CPU to process a greater number of requests each time it leaves a low-power state. As a result, the CPU may possibly remain in a sleep state for a longer period of time, thus saving power. This is accomplished at the host controller level by synchronizing the time frames used by each host controller in a system. The synchronizing signal may be one or more bits of a frame count provided by one host controller to a number of other frame controllers.
    • 减少许多USB主机控制器发起的事务消耗的电力,电路,方法和设备。 以协调方式访问多个USB网络上的外围设备,以便在读取主机控制器所需的数据时,减少CPU和其他电路耗散的功耗。 生成的内存读取在时间上聚集。 这允许CPU在每次离开低功耗状态时处理更多数量的请求。 结果,CPU可能保持较长时间的睡眠状态,从而节省电力。 这通过同步系统中每个主机控制器使用的时间帧在主机控制器级别实现。 同步信号可以是由一个主机控制器向多个其他帧控制器提供的帧计数的一个或多个位。