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    • 53. 发明申请
    • Clock Tree Planning for an ASIC
    • 时钟树规划ASIC
    • US20120304136A1
    • 2012-11-29
    • US13478272
    • 2012-05-23
    • Liang GeSuoming PuChen XuBo Yu
    • Liang GeSuoming PuChen XuBo Yu
    • G06F17/50
    • G06F17/5068G06F2217/62
    • The present invention discloses a method and system for clock tree planning for an ASIC, the method comprising: determining a netlist and a timing constraint file of the ASIC; creating a sequential device undirected graph for sequential devices in the netlist according to connection relationships of the sequential devices in the netlist and timing constraint relationships of the sequential devices in the timing constraint file; grouping the sequential devices in the netlist according to the sequential device undirected graph, such that the sequential devices in one group do not have a timing constraint relationship with the sequential devices in another group. The ASIC design method improved by using this method will reduce the design cycle from weeks to days, and enable designer to quickly plan the clock tree, thus reducing the design time and improving the design efficiency.
    • 本发明公开了一种用于ASIC的时钟树规划方法和系统,所述方法包括:确定所述ASIC的网表和定时约束文件; 根据网表中的顺序设备的连接关系和时序约束文件中的顺序设备的时序约束关系,为网表中的顺序设备创建顺序设备无向图; 根据顺序设备无向图对网表中的顺序设备进行分组,使得一组中的顺序设备不具有与另一组中的顺序设备的时序约束关系。 通过使用这种方法改进的ASIC设计方法可以将设计周期从几周缩短到几天,使设计人员能够快速规划时钟树,从而缩短设计时间,提高设计效率。
    • 54. 发明授权
    • Systems and methods for compressing data and controlling data compression in borehole communication
    • 用于在井眼通信中压缩数据和控制数据压缩的系统和方法
    • US08305243B2
    • 2012-11-06
    • US12828262
    • 2010-06-30
    • Bo YuHan Yu
    • Bo YuHan Yu
    • H03M7/00
    • H03M7/30
    • Systems and methods compress data and control data compression in borehole communication. The systems and methods convert original data collected by a sensor from a first domain into a second domain, wherein the original data is associated with one or more properties of an underground formation. A predetermined number of significant coefficients is selected from components of the second domain, wherein the predetermined number of significant coefficients are components of the second domain with largest amplitudes. The selected predetermined number of significant coefficients is quantized via an quantization technique and the selected predetermined number of significant coefficients is encoded into compressed data via an encoder.
    • 系统和方法在井眼通信中压缩数据和控制数据压缩。 系统和方法将由传感器收集的原始数据从第一域转换成第二域,其中原始数据与地下地层的一个或多个属性相关联。 从第二域的组件中选择预定数量的有效系数,其中预定数量的有效系数是具有最大幅度的第二域的分量。 所选择的预定数量的有效系数经由量化技术被量化,并且所选择的预定数量的有效系数经由编码器被编码成压缩数据。