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    • 35. 发明申请
    • Remote keyless entry system with two-way long range communication
    • 遥控无钥匙进入系统,双向远程通讯
    • US20060077037A1
    • 2006-04-13
    • US10960657
    • 2004-10-07
    • Yi LuoRiad GhabraQingfeng Tang
    • Yi LuoRiad GhabraQingfeng Tang
    • H04B1/00G05B19/00
    • B60R25/24G07C9/00309G07C2009/00793G07C2209/62H04B1/04
    • Vehicle information (e.g., status information, calibratable parameters, or diagnostic data) is transmitted from a base station mounted in a vehicle to a portable RKE fob via a radio-frequency signal within a specified average field strength limit. A multi-byte vehicle message is formed and then coded into a multi-bit coded message. The multi-bit coded message is framed into a plurality of packets. The radio-frequency signal is wirelessly transmitted from the base station with a plurality of spaced packet windows having a predetermined duty cycle, each packet window including a respective one of the plurality of packets. The radio-frequency signal within each of the packet windows has a predetermined field strength greater than the average field strength limit and a substantially zero field strength between the packet windows. The predetermined duty cycle results in an actual average field strength for transmitting all of the packets not exceeding the average field strength limit.
    • 车辆信息(例如,状态信息,可校准参数或诊断数据)经由指定平均场强限度内的射频信号从安装在车辆中的基站发送到便携式RKE FOB。 形成多字节车辆消息,然后编码成多位编码消息。 多比特编码消息被构成多个分组。 射频信号是从具有预定占空比的多个间隔分组窗口从基站无线发送的,每个分组窗口包括多个分组中的相应一个分组。 每个分组窗口内的射频信号具有大于平均场强限度的预定场强和分组窗口之间基本为零的场强。 预定的占空比导致实际的平均场强,用于传送不超过平均场强极限的所有分组。
    • 38. 发明授权
    • Shared program memory for use in multicore DSP devices
    • 用于多核DSP设备的共享程序存储器
    • US06691216B2
    • 2004-02-10
    • US10004492
    • 2001-10-24
    • Kenneth C. KellyIrvinderpal S. GhaiJay B. ReimerTai Huu NguyenHarland Glenn HopkinsYi LuoJason A. T. JonesDan K. BuiPatrick J. SmithKevin A. McGonagle
    • Kenneth C. KellyIrvinderpal S. GhaiJay B. ReimerTai Huu NguyenHarland Glenn HopkinsYi LuoJason A. T. JonesDan K. BuiPatrick J. SmithKevin A. McGonagle
    • G06F1578
    • G06F9/3802G06F9/3877G06F9/3879G06F9/3891G06F15/786Y02D10/13
    • A multi-core DSP device includes a shared program memory to eliminate redundancy and thereby reduce the size and power consumption of the DSP device. Because each of the program cores typically executes the same software program, memory requirements may be reduced by having multiple processor cores share only a single copy of the software. Accordingly, a program memory couples to each of the processor cores by a corresponding instruction bus. Preferably the program memory services two or more instruction requests in each clock cycle. Data is preferably stored in separate memory arrays local to the processor core subsystems and accessible by the processor cores via a dedicated data bus. In one specific implementation, the program memory includes a wrapper that can perform one memory access in the first half of each clock cycle and a second memory access in the second half of each clock cycle. A designated set of instruction buses is allowed to arbitrate for only the first access, and the remaining instruction buses are allowed to arbitrate for only the second access. In this manner, a reduction in on-board memory requirements and associated power consumption may be advantageously reduced.
    • 多核DSP设备包括共享程序存储器以消除冗余,从而减小DSP设备的尺寸和功耗。 由于每个程序内核通常执行相同的软件程序,因此可以通过使多个处理器核心共享该软件的单个副本来减少内存需求。 因此,程序存储器通过相应的指令总线耦合到每个处理器核心。 优选地,程序存储器在每个时钟周期中服务两个或更多个指令请求。 数据优选地存储在处理器核心子系统本地的分开的存储器阵列中,并且可经由专用数据总线由处理器核心访问。 在一个具体实现中,程序存储器包括一个包装器,其可以在每个时钟周期的前半部分中执行一个存储器访问,并且在每个时钟周期的后半部分中执行第二存储器访问。 允许指定的一组指令总线仅对第一次访问进行仲裁,并且允许剩余的指令总线仅对第二次访问进行仲裁。 以这种方式,可以有利地减少车载存储器要求的降低和相关联的功率消耗。