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    • 1. 发明申请
    • PROTECTION AGAINST POWER ANALYSIS ATTACKS
    • 对电力分析攻击的保护
    • WO2005073825A3
    • 2006-04-06
    • PCT/IB2005050254
    • 2005-01-21
    • KONINKL PHILIPS ELECTRONICS NVTIMMERMANS DANIEL
    • TIMMERMANS DANIEL
    • G06F7/00G06F1/00G06F21/55
    • G06F7/00G06F21/755G06F2207/7223G06F2207/7266
    • An electronic circuit for cryptographic processing, comprising a first combinatorial logical circuit, arranged to perform a first set of logical operations on input data and to produce output data, the output data having a functional relation to the input data, further comprising at least a second combinatorial logical circuit, arranged to perform a second set of logical operations on the same input data and to produce output data, the output data having an identical functional relation to the input data, wherein the first set of logical operations is different from the second set of logical operations, and wherein the electronic circuit is arranged to dynamically select one combinatorial logical circuit, of a set comprising at least the first combinatorial logical circuit and the second combinatorial logical circuit, for performing logical operations on the input data and producing output data.
    • 一种用于加密处理的电子电路,包括第一组合逻辑电路,被布置为对输入数据执行第一组逻辑运算并产生输出数据,所述输出数据与输入数据具有功能关系,还包括至少第二组 组合逻辑电路,被布置为对相同的输入数据执行第二组逻辑运算并产生输出数据,所述输出数据与所述输入数据具有相同的功能关系,其中所述第一组逻辑运算与所述第二组不同 并且其中所述电子电路被布置成动态地选择包括至少所述第一组合逻辑电路和所述第二组合逻辑电路的组的一个组合逻辑电路,以对所述输入数据执行逻辑运算并产生输出数据。
    • 2. 发明申请
    • VOLTAGE SUPPLY STRUCTURE AND METHOD
    • 电压供应结构与方法
    • WO2005013110A3
    • 2005-06-16
    • PCT/IB2004051300
    • 2004-07-27
    • KONINKL PHILIPS ELECTRONICS NVTIMMERMANS DANIEL
    • TIMMERMANS DANIEL
    • G06F1/26G06F1/32G06F17/50
    • G06F1/32G06F17/5068
    • Fig. 1c shows a logic tree l0c comprising a plurality of logic paths (27, 29, 31, 33) connected at a root 11c. The length of each path represents the delay of the path at a nominal supply voltage. The voltage supply structure for the logic tree l0c is partitioned as shown in Fig. 3c, according to the delay of each logic path. For example, logic path (29) having the worst-case delay is supplied a voltage level V1, for example the nominal supply voltage. Logic paths (27) and (31), having a shorter delay, are supplied a second voltage level V2, which is lower than the first voltage level V1. Logic path (33), having an even shorter delay, is supplied a third voltage level V3, which is lower than V2 and V1. The voltage structure enables the voltage level and hence power consumption to be reduced without increasing the overall worst-case delay of the logic tree l0c.
    • 图。 图1c示出了包括连接在根11c处的多个逻辑路径(27,29,31,33)的逻辑树l0c。 每个路径的长度表示路径在标称电源电压下的延迟。 逻辑树l0c的电压供应结构被分割,如图1所示。 3c,根据每个逻辑路径的延迟。 例如,具有最差情况延迟的逻辑路径(29)被提供电压电平V1,例如标称电源电压。 具有较短延迟的逻辑路径(27)和(31)被提供低于第一电压电平V1的第二电压电平V2。 具有更短延迟的逻辑路径(33)被提供低于V2和V1的第三电压电平V3。 电压结构使得能够降低电压电平并因此降低功耗,而不增加逻辑树10c的整体最差情况延迟。
    • 4. 发明专利
    • DE602004023127D1
    • 2009-10-22
    • DE602004023127
    • 2004-12-29
    • KONINKL PHILIPS ELECTRONICS NV
    • TIMMERMANS DANIEL
    • G06F5/06G06F5/08
    • An asynchronously operated FIFO pipe-line ( 10 a-d) comprises a plurality of handshake chains functionally in parallel. Successive data items are each passed by selecting a chain dependent on a value of the data item. The FIFO pipelines ( 10 a-d) comprise successive pipe-line stages, each pipe-line stage with respective handshake stages ( 12, 16 ) of each of the plurality of hand-shake chains. A coordination circuit ( 15 ) prevents handshakes in mutually different ones of handshake chains from overtaking one another. Preferably four phase handshake protocols are used with logic gates ( 26, 28 ) between the request line ((REQ 1 - i, REQ 0 - i) and the acknowledge line (ACK 1 - i, ACK 0 - i) at the input of a stage and a set-reset latch ( 20, 22 ) with a set input coupled to the output of the logic gate ( 26, 28 ). The latch has a data output coupled to the request line of at the output of the stage, a reset input coupled to the acknowledge line of the output of the stage, and a not-data output coupled to the coordination circuit ( 24 ). The coordination circuit ( 24 ) is arranged to disable response of the logic gates ( 26, 28 ) of all handshake stages in a pipeline stage while the not-data output of any one of the set-reset latches ( 20, 22 ) the pipeline stage indicates a set state.
    • 5. 发明专利
    • DE602005018345D1
    • 2010-01-28
    • DE602005018345
    • 2005-04-26
    • KONINKL PHILIPS ELECTRONICS NV
    • TIMMERMANS DANIEL
    • G06F13/40
    • Data is communicated between an asynchronously operating circuit ( 10 ) and a clocked operating sub-circuit ( 16, 17 ). A data signal is supplied from the asynchronously operating sub-circuit ( 10 ) accompanied by a blocking/non blocking control signal. A request signal from the asynchronously operating sub-circuit ( 10 ) when the data signal and the control signal are being supplied. The data is stored in response to the request at least if the control signal supplied with the data has a first value. The request signal is routed through a path through handshake elements in a handshake circuit ( 20, 30,40 ) that is arranged to generate an acknowledge signal in response to the request signal to the asynchronously operating sub-circuit ( 10 ). The path through the handshake elements dependent on the control signal, so that the acknowledge signal is generated upon storing the data signal that accompanies the request at the output into the storage element when the control signal supplied with the data has the first value, and the acknowledge signal is generated upon detecting a clock cycle of the clocked operating sub-circuit wherein the clocked operating sub-circuit accepts the data that accompanies the request when the control signal has a second value.
    • 6. 发明专利
    • AT452371T
    • 2010-01-15
    • AT05731772
    • 2005-04-26
    • KONINKL PHILIPS ELECTRONICS NV
    • TIMMERMANS DANIEL
    • G06F13/40
    • Data is communicated between an asynchronously operating circuit ( 10 ) and a clocked operating sub-circuit ( 16, 17 ). A data signal is supplied from the asynchronously operating sub-circuit ( 10 ) accompanied by a blocking/non blocking control signal. A request signal from the asynchronously operating sub-circuit ( 10 ) when the data signal and the control signal are being supplied. The data is stored in response to the request at least if the control signal supplied with the data has a first value. The request signal is routed through a path through handshake elements in a handshake circuit ( 20, 30,40 ) that is arranged to generate an acknowledge signal in response to the request signal to the asynchronously operating sub-circuit ( 10 ). The path through the handshake elements dependent on the control signal, so that the acknowledge signal is generated upon storing the data signal that accompanies the request at the output into the storage element when the control signal supplied with the data has the first value, and the acknowledge signal is generated upon detecting a clock cycle of the clocked operating sub-circuit wherein the clocked operating sub-circuit accepts the data that accompanies the request when the control signal has a second value.
    • 7. 发明专利
    • AT442623T
    • 2009-09-15
    • AT04806634
    • 2004-12-29
    • KONINKL PHILIPS ELECTRONICS NV
    • TIMMERMANS DANIEL
    • G06F5/06G06F5/08
    • An asynchronously operated FIFO pipe-line ( 10 a-d) comprises a plurality of handshake chains functionally in parallel. Successive data items are each passed by selecting a chain dependent on a value of the data item. The FIFO pipelines ( 10 a-d) comprise successive pipe-line stages, each pipe-line stage with respective handshake stages ( 12, 16 ) of each of the plurality of hand-shake chains. A coordination circuit ( 15 ) prevents handshakes in mutually different ones of handshake chains from overtaking one another. Preferably four phase handshake protocols are used with logic gates ( 26, 28 ) between the request line ((REQ 1 - i, REQ 0 - i) and the acknowledge line (ACK 1 - i, ACK 0 - i) at the input of a stage and a set-reset latch ( 20, 22 ) with a set input coupled to the output of the logic gate ( 26, 28 ). The latch has a data output coupled to the request line of at the output of the stage, a reset input coupled to the acknowledge line of the output of the stage, and a not-data output coupled to the coordination circuit ( 24 ). The coordination circuit ( 24 ) is arranged to disable response of the logic gates ( 26, 28 ) of all handshake stages in a pipeline stage while the not-data output of any one of the set-reset latches ( 20, 22 ) the pipeline stage indicates a set state.