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    • 92. 发明申请
    • METHOD AND APPARATUS FOR GATING A CLOCK SIGNAL
    • 评估时钟信号的方法和装置
    • WO2010029389A1
    • 2010-03-18
    • PCT/IB2008/053725
    • 2008-09-15
    • FREESCALE SEMICONDUCTOR, INC.SOFER, SergeyDABUSH, AmiPRIEL, Michael
    • SOFER, SergeyDABUSH, AmiPRIEL, Michael
    • H03K19/096G06F1/08H03L7/081H04L7/033
    • H03K19/096G06F1/08H03K19/0016
    • A semiconductor device (400) comprising clock gating logic (405). The clock gating logic (405) comprises clock freezing logic (410) arranged to receive a selected clock signal (415) and an enable signal (460). The clock freezing logic (410) is further arranged to output a gated clock signal (420) substantially corresponding to the selected clock signal (415) when the enable signal (460) comprises an inactive state, and to freeze the output gated clock signal (420) when the enable signal (460) comprises an active state. The clock gating logic (405) further comprises polarity comparison logic (425) arranged to compare polarities of an input clock signal (430) and the gated clock signal (420), and selector logic (435) arranged to select from the input clock signal (430) and an inverted input clock signal (445), based on a result (440) of a comparison of the polarities of the input clock signal (430) and the gated clock signal (420), and to provide the selected clock signal (415) to the clock freezing logic (410). The polarity comparison logic (425) and the selector logic (435) being further arranged such that, upon the enable signal (460) transitioning from an active state to an inactive state, the selected clock signal (415) provided to the clock freezing logic (410) comprises a polarity substantially equivalent to that of the gated clock signal (420).
    • 一种包括时钟选通逻辑(405)的半导体器件(400)。 时钟门控逻辑(405)包括布置成接收所选择的时钟信号(415)和使能信号(460)的时钟冻结逻辑(410)。 时钟冻结逻辑(410)还被布置成当使能信号(460)包括非活动状态时,输出基本对应于所选时钟信号(415)的门控时钟信号(420),并且将输出门控时钟信号 420)当使能信号(460)包括有效状态时。 时钟门控逻辑(405)还包括被布置为比较输入时钟信号(430)和选通时钟信号(420)的极性的极性比较逻辑(425),以及布置成从输入时钟信号 (430)和门控时钟信号(420)的极性的比较的结果(440),并且提供所选择的时钟信号(430)和反相输入时钟信号(445) (415)连接到时钟冻结逻辑(410)。 极性比较逻辑(425)和选择器逻辑(435)进一步布置成使得在使能信号(460)从激活状态转换到非活动状态时,所选择的时钟信号(415)提供给时钟冻结逻辑 (410)包括与门控时钟信号(420)的极性相当的极性。
    • 93. 发明申请
    • SYSTEM AND METHOD FOR SECURE REAL TIME CLOCKS
    • 用于保证实时时钟的系统和方法
    • WO2008139275A1
    • 2008-11-20
    • PCT/IB2007/052713
    • 2007-05-11
    • FREESCALE SEMICONDUCTOR, INC.VOORWINDEN, CorPRIEL, Michael
    • VOORWINDEN, CorPRIEL, Michael
    • G04G3/02G06F1/14G06F1/32
    • G04G3/02G06F1/14G06F1/3203G06F1/324Y02D10/126
    • A secure real time clock (RTC) system (1 ) is provided, comprising a secure RTC (3), a frequency signal generator (5, 7), and a frequency adjuster (9, 11 ) connected between the secure RTC (3) and the frequency signal generator (5,7) to receive a signal having a first frequency from the frequency signal generator (5, 7). On receipt of a first control signal the frequency adjuster outputs the signal having the first frequency to the secure RTC (3), and on receipt of a second control signal the frequency adjuster adjusts the signal having the first frequency to generate a signal having a second frequency, the second frequency being lower than the first frequency, and outputs the signal having the second frequency to the secure RTC (3). A clock line (23) transmits the signal having the first frequency and the signal having the second frequency from the frequency adjuster (9, 11 ) to the secure RTC (3), and has a first power consumption when transmitting the signal having the first frequency and a second power consumption when transmitting the signal having the second frequency, the first power consumption being greater than the second power consumption.
    • 提供安全的实时时钟(RTC)系统(1),其包括安全RTC(3),频率信号发生器(5,7)和频率调节器(9,11),连接在安全RTC(3) 和频率信号发生器(5,7),以从频率信号发生器(5,7)接收具有第一频率的信号。 在接收到第一控制信号时,频率调节器将具有第一频率的信号输出到安全RTC(3),并且在接收到第二控制信号时,频率调节器调节具有第一频率的信号以产生具有第二频率的信号 频率,第二频率低于第一频率,并将具有第二频率的信号输出到安全RTC(3)。 时钟线(23)将具有第一频率的信号和具有第二频率的信号从频率调节器(9,11)发送到安全RTC(3),并且当发送具有第一频率的信号时,具有第一功率消耗 频率和第二功率消耗,当发送具有第二频率的信号时,第一功率消耗大于第二功率消耗。
    • 94. 发明申请
    • DEVICE AND METHOD FOR MEDIA ACCESS CONTROL
    • 用于媒体访问控制的设备和方法
    • WO2006131143A1
    • 2006-12-14
    • PCT/EP2005/007886
    • 2005-06-10
    • FREESCALE SEMICONDUCTOR, INC.PRIEL, MichaelCHUN, ChristopherCHUN, ChristopherLEE, Gordon, P.VOORWINDEN, Cor
    • PRIEL, MichaelCHUN, ChristopherCHUN, ChristopherLEE, Gordon, P.VOORWINDEN, Cor
    • G06F13/40G06F13/376G06F1/08G06F1/32
    • G06F13/376G06F1/3203G06F1/324G06F1/3253G06F1/3296Y02D10/126Y02D10/151Y02D10/172
    • A method (100) for media access control, the method includes generating (180) at least one media access grant in response to at least one media access request. The method is characterized by monitoring (130) a data line, while maintaining at least a clock line in a low power mode, to detect at least one media access request generated by at least one component connected to the data line and to the clock line; and forcing (140) the at least clock line to exit the low power mode and starting a contention prevention period, when the media access controller or at least one component requests to access the data line. A device (400) including multiple components (420) that are connected to a data line (430), and adapted to transmit information over the data line at a transmission rate responsive to a first clock rate. The device (400) is characterized by further including a clock signal provider (415) that is adapted to provide a high frequency clock signal over the data line and further adapted to determine, before a completion of the transmitting and in response to the transmitted information, when to substantially reduce the clock rate.
    • 一种用于媒体访问控制的方法(100),所述方法包括响应于至少一个媒体访问请求生成(180)至少一个媒体访问许可。 该方法的特征在于,在保持低功率模式下的至少一个时钟线的同时监视(130)数据线,以检测由连接到数据线和时钟线的至少一个组件产生的至少一个媒体访问请求 ; 以及当所述媒体访问控制器或至少一个组件请求访问所述数据线时,迫使(140)所述至少时钟线退出所述低功率模式并开始争用预防时段。 一种包括连接到数据线(430)的多个组件(420)并且适于以响应于第一时钟速率的传输速率通过数据线传输信息的设备(400)。 该装置(400)的特征在于还包括时钟信号提供器(415),其适于在数据线上提供高频时钟信号,并且还适于在完成发送之前确定并且响应所发送的信息 ,何时大幅度降低时钟频率。
    • 95. 发明申请
    • METHOD AND DEVICE FOR FRAME SYNCHRONIZATION
    • 用于帧同步的方法和装置
    • WO2006131142A1
    • 2006-12-14
    • PCT/EP2005/007885
    • 2005-06-10
    • FREESCALE SEMICONDUCTOR, INC.PRIEL, MichaelCHUN, ChristopherLEE, Gordon, P.VOORWINDEN, Cor
    • PRIEL, MichaelCHUN, ChristopherLEE, Gordon, P.VOORWINDEN, Cor
    • G06F13/42
    • G06F13/4291Y02D10/14Y02D10/151
    • A method (10) for frame synchronization, the method (10) includes providing (30) a high frequency clock signal over a clock line during a transmission of information over a data line connected to a media access controller (410) and to at least one component (421); characterized by defining (20) a short synchronization period; processing (40) at least one signal conveyed over the data line during the short synchronization period to determine a presence of a synchronization error; and maintaining (70) at least the clock line in a low power mode when the data line is substantially idle. A device (400) having frame synchronization capabilities, the device includes a clock signal provider (415) and at least one component (421) connected to a data line (430). The clock signal provider (415) is adapted to provide a high frequency clock signal over a clock line during a transmission of information over the data line. The at least one component (421) is adapted to process at least one signal conveyed over the data line during a short synchronization period to determine a presence of a synchronization error. The device (400) is further adapted to maintain at least the clock line in a low power mode when the data line is substantially idle.
    • 一种用于帧同步的方法(10),所述方法(10)包括在通过连接到媒体访问控制器(410)的数据线上的信息传输期间在时钟线上提供(30)高频时钟信号,并且至少 一个组件(421); 其特征在于定义(20)短同步时段; 处理(40)在短同步周期期间通过数据线传送的至少一个信号以确定同步误差的存在; 并且当数据线基本上空闲时,至少将时钟线保持(70)为低功率模式。 一种具有帧同步能力的设备(400),该设备包括连接到数据线(430)的时钟信号提供器(415)和至少一个组件(421)。 时钟信号提供器(415)适于在数据线上的信息传输期间通过时钟线提供高频时钟信号。 所述至少一个组件(421)适于处理在短同步周期期间通过所述数据线路传送的至少一个信号,以确定存在同步错误。 所述设备(400)还适用于当所述数据线基本为空闲时,至少将所述时钟线保持在低功率模式。
    • 98. 发明申请
    • METHOD AND APPARATUS FOR AT-SPEED SCAN SHIFT FREQUENCY TEST OPTIMIZATION
    • 用于高速扫描频率测试优化的方法和装置
    • WO2014068368A1
    • 2014-05-08
    • PCT/IB2012/056019
    • 2012-10-30
    • FREESCALE SEMICONDUCTOR, INC.SOFER, SergeyBERKOVITZ, AsherPRIEL, Michael
    • SOFER, SergeyBERKOVITZ, AsherPRIEL, Michael
    • G01R31/28
    • G01R31/3177G01R31/318536G01R31/318575G01R31/318577G01R31/318594
    • There is provided an integrated circuit comprising at least one logic path, comprising a plurality of sequential logic elements operably coupled into a scan chain to form at least one scan chain under test, at least one IR drop sensor operably coupled to the integrated circuit power supply, operable to output a first logic state when a sensed supply voltage is below a first predefined value and to output a second logic state when the sensed supply voltage is above the first predefined value, at least one memory buffer operably coupled to a scan test data load-in input and a scan test data output of the at least one scan chain under test, and control logic operable to gate logic activity including the scan shift operation inside the integrated circuit for a single cycle when the at least one IR drop sensor outputs the first logic state and to allow normal scan test flow when the at least one IR drop sensor outputs the second logic state. There is also provided an associated method of performing at-speed scan testing of an integrated circuit.
    • 提供了包括至少一个逻辑路径的集成电路,其包括可操作地耦合到扫描链中以形成至少一个待测扫描链的多个顺序逻辑元件,至少一个IR压降传感器,可操作地耦合到集成电路电源 ,当所感测的电源电压低于第一预定值时,可操作以输出第一逻辑状态,并且当感测到的电源电压高于第一预定义值时输出第二逻辑状态,至少一个存储器缓冲器可操作地耦合到扫描测试数据 负载输入和待测试的至少一个扫描链的扫描测试数据输出,以及当所述至少一个IR下降传感器输出时,控制逻辑可操作以对包含集成电路内的扫描移位操作的门逻辑活动进行单个周期 所述第一逻辑状态并且当所述至少一个IR下降传感器输出所述第二逻辑状态时允许正常的扫描测试流程。 还提供了执行集成电路的高速扫描测试的相关方法。
    • 99. 发明申请
    • SYSTEM AND METHOD FOR ON-DIE VOLTAGE DIFFERENCE MEASUREMENT ON A PASS DEVICE, AND INTEGRATED CIRCUIT
    • 通用器件和集成电路上的电流差异测量的系统和方法
    • WO2014013293A1
    • 2014-01-23
    • PCT/IB2012/053682
    • 2012-07-19
    • FREESCALE SEMICONDUCTOR, INC.PRIEL, MichaelFLESHEL, LeonidSOFER, Sergey
    • PRIEL, MichaelFLESHEL, LeonidSOFER, Sergey
    • G05F1/565G05F1/10
    • G01R19/10G01R31/2856
    • A system (12) for on-die voltage difference measurement on a pass device (14) comprises a first voltage controlled oscillator circuit (16) having a first voltage control input (18) connectable to a first terminal (20) of the pass device; a second voltage controlled oscillator circuit (22) having a second voltage control input (24) connectable to a second terminal (26) of the pass device; a first counter circuit (28) arranged to count oscillation periods of a first output signal from the first voltage controlled oscillator circuit and to provide a stop signal when a predefined number of the oscillation periods of the first output signal is counted; and a second counter circuit (30) arranged to count oscillation periods of a second output signal from the second voltage controlled oscillator circuit and to stop counting depending on the stop signal.
    • 用于通过装置(14)上的片上电压差测量的系统(12)包括第一压控振荡器电路(16),其具有可连接到通过装置的第一端子(20)的第一电压控制输入端(18) ; 具有可连接到通过装置的第二端子(26)的第二电压控制输入端(24)的第二压控振荡器电路(22) 第一计数器电路(28),被布置为对来自第一压控振荡器电路的第一输出信号的振荡周期进行计数,并且当计数第一输出信号的预定数量的振荡周期时提供停止信号; 以及第二计数器电路(30),被配置为对来自第二压控振荡器电路的第二输出信号的振荡周期进行计数,并根据停止信号停止计数。