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    • 1. 发明授权
    • Circuit and method for determining multiplicative inverses with a
look-up table
    • 用查找表确定乘法反转的电路和方法
    • US5818744A
    • 1998-10-06
    • US191564
    • 1994-02-02
    • Roger L. MillerThomas P. Harper
    • Roger L. MillerThomas P. Harper
    • B60T8/1761B60T8/66G06F7/52
    • B60T8/17616
    • Digital circuits determine multiplicative inverses using look-up tables which, in response to an address signal, provide a signal indicating a multiplicative inverse. The look-up tables store values indicating inverses for numbers between 1 and 2. The circuit factors a value to be inverted as product a power of two and a factor between 1 and 2. An address signal indicating the factor is applied to the look-up table, and the look-up table provides a signal which indicates the inverse of the factor. The signal provided by the look-up table is then converted to the proper scale for the exponent N. Factoring and conversion may be accomplished with logical shifts so that no multiplier is required. The look-up table may be compressed by not storing bits of inverses, which are constant or only change once within the range of the look-up table and by only storing look-up values for every other number within the range of the look-up table. A code bit in each look-up table value permits generation of correct inverses for values not stored.
    • 数字电路使用查找表来确定乘法反转,所述查询表响应于地址信号提供指示乘法反相的信号。 查找表存储指示在1和2之间的数字的反转的值。该电路将要反转的值作为乘积为2的幂和1和2之间的因子。将表示因子的地址信号应用于查找表, 查找表提供一个指示因子相反的信号。 然后,由查询表提供的信号被转换成用于指数N的适当标度。可以用逻辑移位来完成保理和转换,从而不需要乘法器。 可以通过不存储反转的位来压缩查找表,该比特是恒定的,或者仅在查找表的范围内改变一次,并且仅通过在查找表的范围内存储每隔一个数字的查找值, 桌子。 每个查找表值中的代码位允许为未存储的值生成正确的反转。
    • 2. 发明授权
    • Anti-lock braking system containing look-up table for determining wheel
velocity and acceleration
    • 包含用于确定车轮速度和加速度的查找表的防抱死制动系统
    • US5491634A
    • 1996-02-13
    • US319206
    • 1994-10-06
    • Roger L. MillerThomas P. Harper
    • Roger L. MillerThomas P. Harper
    • B60T8/1761B60T8/66B60T17/00
    • B60T8/17616
    • An anti-lock braking system includes a mechanism for releasing a brake and a digital circuit for determining a wheel velocity and controlling the mechanism to prevent the brake from locking. The digital circuit uses a look-up table which, in response to an address signal, provides a signal indicating a multiplicative inverse of a number between 1 and 2. The circuit receives a measured time for a wheel to move a fixed distance and factors the time as product a power of two and a factor between 1 and 2. An address signal indicating the factor is applied to the look-up table, and the look-up table provides a signal which indicates the inverse of the factor. The signal from the look-up table is then converted to the proper scale for the time. Factoring and conversion may be accomplished with logical shifts so that no multiplier is required. The look-up table may be compressed by not storing bits of inverses, which are constant or only change once within the range of the look-up table and by only storing look-up values for every other number within the range of the look-up table. A code bit in each look-up table value permits generation of correct inverses for values not stored.
    • 防抱死制动系统包括用于释放制动器的机构和用于确定车轮速度的数字电路并且控制机构以防止制动器锁定。 数字电路使用查找表,该查找表响应于地址信号提供指示1和2之间的数字的乘法反相的信号。该电路接收用于轮移动固定距离的测量时间, 时间作为产品的功率为2,因子介于1和2之间。指示因子的地址信号被施加到查找表,并且查找表提供指示因子的倒数的信号。 然后,来自查表的信号被转换成适当的时间。 保理和转换可以通过逻辑移位来实现,因此不需要乘数。 可以通过不存储反转的位来压缩查找表,该比特是恒定的,或者仅在查找表的范围内改变一次,并且仅通过在查找表的范围内存储每隔一个数字的查找值, 桌子。 每个查找表值中的代码位允许为未存储的值生成正确的反转。
    • 3. 发明授权
    • Anti-lock braking system
    • 防抱死制动系统
    • US5372410A
    • 1994-12-13
    • US190811
    • 1994-02-02
    • Roger L. MillerThomas P. Harper
    • Roger L. MillerThomas P. Harper
    • B60T8/40B60T8/88B60T8/32
    • B60T8/404B60T8/885Y10S303/09
    • An anti-lock braking system includes three integrated circuits (an integrated voltage regulator and two different microcontrollers) which perform different functions but share the tasks of detecting malfunctions and shutting down the system when malfunctions are detected. The two different microcontrollers perform different functions, have different circuitry, and execute different software. Typically, a first microcontroller receives wheel sensor signals, calculates wheel velocities and accelerations, and operates mechanical devices which control braking. A second microcontroller executes the main anti-lock braking software and determines from the velocities and accelerations when brakes should be released. All of the integrated circuits monitor each other and the other elements of the anti-lock braking system to detect malfunctions. Multiple shut down methods are provided so that a single chip failure can be safely handled. The three integrated circuits can be fabricated using different device technologies and design rules so that the operating environment of the anti-lock braking system is less likely to cause simultaneous failures in multiple integrated circuits.
    • 防抱死制动系统包括执行不同功能的三个集成电路(集成稳压器和两个不同的微控制器),但共享检测到故障时检测故障和关闭系统的任务。 两个不同的微控制器执行不同的功能,具有不同的电路,并执行不同的软件。 通常,第一微控制器接收车轮传感器信号,计算车轮速度和加速度,并且操作控制制动的机械装置。 第二个微控制器执行主防抱死制动软件,并确定当制动器应释放时的速度和加速度。 所有的集成电路都可以互相监视和防抱死制动系统的其他元件来检测故障。 提供多重关闭方法,以便可以安全地处理单个芯片故障。 可以使用不同的设备技术和设计规则来制造三个集成电路,使得防抱死制动系统的操作环境不太可能导致多个集成电路中的同时故障。
    • 7. 发明申请
    • LIGHT BAR
    • 灯条
    • US20100073948A1
    • 2010-03-25
    • US12566017
    • 2009-09-24
    • Paul L. SteinTimothy B. MurrayRoger L. Miller
    • Paul L. SteinTimothy B. MurrayRoger L. Miller
    • B60Q1/26F21V21/00F21V5/00F21V1/00
    • F21V21/00B60Q1/2611F21V5/04
    • A light bar may include a light head with chip-on-board (COB) light emitting diode (LED) and an optic component mounted adjacent to the COB LED. The light bar may comprise short and long center modules. The light bar may include a plurality of housing modules where each housing module includes a light head and a lens cover having a top portion that is substantially impervious to ultraviolet radiation, and a lens portion extending downward from the top portion in generally opposing relationship with the light head. The light bar may include a circuit board including a wire-to-board connector, and a light head including a wire-to-board connector mated with the wire-to-board connector on the circuit board to electrically connect the light head to the circuit board. The light head may include a holographic diffuser.
    • 灯条可以包括具有芯片上(COB)发光二极管(LED)的光头和安装在COB LED附近的光学部件。 灯条可以包括短和长的中心模块。 灯条可以包括多个壳体模块,其中每个壳体模块包括光头和具有基本上不透紫外线辐射的顶部的透镜盖,以及从顶部向下延伸的透镜部分,与大致相对的关系 光头。 灯条可以包括电路板,其包括线对板连接器,以及包括与电路板上的线对板连接器配合的线对板连接器的光头,用于将光头电连接到 电路板。 光头可以包括全息漫射器。
    • 9. 发明授权
    • Skid control system
    • 防滑控制系统
    • US4143926A
    • 1979-03-13
    • US831770
    • 1977-09-09
    • Roger L. Miller
    • Roger L. Miller
    • B60T8/17B60T8/1761B60T8/88B60T8/02
    • B60T8/1708B60T8/17613B60T8/885
    • A low cost skid control system is disclosed that incorporates a skid detector circuit for detecting a skid condition in combination with a hold capacitor ramp circuit that maintains the brake release signal beyond the termination of the skid signal from the output of the detector circuit when a severe skid condition is encountered. The level of charge on the hold capacitor ramp circuit is adapted to relate to the severity of the wheel speed departure from the approximated vehicle speed. In one embodiment, this is accomplished indirectly by providing a peak acceleration circuit which stores the maximum wheel acceleration value attained during wheel spin-up when brake pressure is relieved. The peak acceleration value is then utilized to vary the charge rate of the hold-on capacitor during the succeeding braking period. In addition, another circuit is provided that is adapted to rapidly dissipate any remaining charge on the hold-on capacitor when the acceleration of the wheels during wheel spin-up begins to decrease. This helps minimize stopping distance by preventing the release of brake pressure beyond that necessary to complete wheel spin-up.
    • 公开了一种低成本滑动控制系统,其包括用于检测滑行条件的滑动检测器电路,其与保持电容器斜坡电路相结合,当保持电容器斜坡电路严重时保持制动释放信号超过防止信号终止从检测器电路的输出 遇到滑坡条件。 保持电容斜坡电路上的电荷电平适用于车速离近似车速的严重程度。 在一个实施例中,这通过提供一个峰值加速度电路来间接实现,峰值加速电路存储当制动压力被释放时在车轮启动期间获得的最大车轮加速度值。 然后利用峰值加速度值来改变随后制动期间保持电容器的充电速率。 此外,提供另一电路,其适于在轮驱动期间车轮的加速开始减小时快速耗散保持电容器上的任何剩余电荷。 这有助于通过防止制动压力释放超过完成车轮旋转所需的压力来最小化停止距离。