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    • 51. 发明专利
    • Semiconductor integrated circuit
    • 半导体集成电路
    • JP2009188699A
    • 2009-08-20
    • JP2008025994
    • 2008-02-06
    • Renesas Technology Corp株式会社ルネサステクノロジ
    • YAMAKIDO KAZUONAKAMURA HOMARE
    • H03L7/06H03K3/03H03K3/354H03K5/135H03K19/096H03L7/081
    • H03L7/0995H03L7/085H03L7/093H03L2207/50
    • PROBLEM TO BE SOLVED: To reduce steps of storing control information to a register, which digitally controls a clock signal generating part. SOLUTION: This semiconductor integrated circuit includes a digital control signal generating part 10 to generate a clock signal CLKm, and a clock generating part equipped with a digital control part 20. The clock generating part is further equipped with a phase frequency comparator 31, and a control register 22. A reference signal CLKin and a feedback signal Mout are supplied to the comparator 31. The output signal FDout of the comparator 31 is supplied to the control resistor 22, and the control resistor 22 stores digital control information composed of a plurality of bits. The clock generating part is further equipped with a control data storage circuit 25 to store a plurality of initial setting data for a plurality of locking operations in advance. The initial setting data Sset1-Sset5 are stored in the high-order bits of the control resister 22 from the control data storage circuit 25 in response to operation selection information Min. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:减少将控制信息存储到数字控制时钟信号产生部分的寄存器的步骤。 解决方案:该半导体集成电路包括用于产生时钟信号CLKm的数字控制信号产生部分10和配备有数字控制部分20的时钟产生部分。时钟产生部分还配备有相位频率比较器31 和控制寄存器22.参考信号CLKin和反馈信号Mout被提供给比较器31.比较器31的输出信号FDout被提供给控制电阻器22,并且控制电阻器22存储由 多个位。 时钟产生部分还配备有控制数据存储电路25,用于预先存储用于多个锁定操作的多个初始设置数据。 响应于操作选择信息Min,初始设置数据Sset1-Sset5从控制数据存储电路25存储在控制寄存器22的高位中。 版权所有(C)2009,JPO&INPIT
    • 54. 发明专利
    • Delay circuit and signal generating circuit using the same
    • 延迟电路和信号发生电路
    • JP2009017151A
    • 2009-01-22
    • JP2007175709
    • 2007-07-04
    • Yokogawa Electric Corp横河電機株式会社
    • KUWABARA HIROSUKE
    • H03K5/135G01R31/3183H03L7/00H03L7/081
    • PROBLEM TO BE SOLVED: To solve the problem that an offset delay time of a programmable delay circuit changes according to circumference conditions such as ambient temperature, so that an output waveform signal of a signal generating circuit using this programmable delay circuit is unstable. SOLUTION: The programmable delay circuit is series-connected to a delay circuit to input clocks into the programmable delay circuit, a delay time of the programmable delay circuit is controlled so as to provide a constant total delay time of the two delay circuits, and also an output of the programmable delay circuit is inputted into a plurality of programmable delay circuits. Further, the signal generating circuit is configured by use of the plurality of programmable delay circuits. Even if the circumference conditions change, the delay time with respect to clocks of the plurality of programmable delay circuits does not change. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了解决可编程延迟电路的偏移延迟时间根据诸如环境温度的周围条件而变化的问题,使得使用该可编程延迟电路的信号发生电路的输出波形信号不稳定 。 解决方案:可编程延迟电路串联连接到延迟电路以将时钟输入到可编程延迟电路中,可编程延迟电路的延迟时间被控制,以便提供两个延迟电路的恒定总延迟时间 ,并且可编程延迟电路的输出也被输入到多个可编程延迟电路中。 此外,信号发生电路通过使用多个可编程延迟电路来配置。 即使圆周条件改变,相对于多个可编程延迟电路的时钟的延迟时间也不改变。 版权所有(C)2009,JPO&INPIT
    • 55. 发明专利
    • Frequency adjusting apparatus and dll circuit including same
    • 频率调整装置和DLL电路,包括它们
    • JP2008306699A
    • 2008-12-18
    • JP2008040598
    • 2008-02-21
    • Hynix Semiconductor Inc株式会社ハイニックスセミコンダクターHynix Semiconductor Inc.
    • CHO KOSHUNCHUN JUN HYUN
    • H03L7/081G06F1/10H03K5/135H03K5/156H04L7/02
    • H03L7/0814
    • PROBLEM TO BE SOLVED: To provide a frequency adjusting apparatus for reducing electromagnetic interference of a semiconductor integrated circuit, and a delay locked loop (DLL) circuit including the same. SOLUTION: A frequency adjusting apparatus of the present invention is characterized in including a frequency control signal generating section for generating a frequency control signal, with a plurality of bits, which is level-shifted bit by bit in response to a reference clock, and a frequency adjusting section which adjusts a frequency of the inputted reference clock in response to the frequency control signal with the plurality of bits. Furthermore, a frequency adjusting apparatus of another invention is characterized in including a frequency control signal generating section for generating a frequency control signal with a plurality of bits by dividing the frequency of a reference clock in a plurality of frequency dividing ratios, and a frequency adjusting section for adjusting a frequency of the inputted reference clock in response to the frequency control signal with the plurality of bits. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种用于减小半导体集成电路的电磁干扰的频率调节装置,以及包括该频率调节装置的延迟锁定环(DLL)电路。 解决方案:本发明的频率调整装置的特征在于包括频率控制信号产生部分,用于产生频率控制信号,多个比特是响应于参考时钟逐位移位 以及频率调整部,其响应于具有多个位的频率控制信号来调整输入的基准时钟的频率。 此外,另一发明的频率调整装置的特征在于包括:频率控制信号生成部,其通过以多个分频比除以参考时钟的频率,生成具有多个位的频率控制信号;频率调整 部分,用于响应于具有多个位的频率控制信号来调节输入的参考时钟的频率。 版权所有(C)2009,JPO&INPIT
    • 60. 发明专利
    • Delay circuit
    • 延时电路
    • JP2007288749A
    • 2007-11-01
    • JP2006118386
    • 2006-04-21
    • Sanyo Electric Co Ltd三洋電機株式会社
    • OTSUKA KENJIWADA ATSUSHI
    • H03K5/135
    • PROBLEM TO BE SOLVED: To solve problems of a conventional delay circuit that a configuration for controlling the number of delay stages is complicated and further there is danger to lack accuracy in precise delay control. SOLUTION: In a delay circuit 10, a first delay unit 12 includes a plurality of delay elements as an object to detect delay characteristics. A second delay unit 14 includes a plurality of delay elements for outputting signals delayed in accordance with the delay characteristics of the first delay unit 12. A detection unit 16 detects the number of delay elements used in the first delay unit 12 to delay an input signal just by a predetermined reference time. A selection unit 18 selects the number of delay elements used in the second delay unit 14 to delay the input signal in accordance with the detected number of delay elements. In the first delay unit 12 and the second delay unit 14, the ratio between each of the delay values of the delay elements included therein is equivalent to the ratio between the reference time and a desired delay time in the second delay unit 14. The delay values of the delay elements included in the second delay unit 14 are smaller than the delay values of the delay elements included in the first delay unit 12. COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题为了解决用于控制延迟级数的结构复杂的传统延迟电路的问题,进一步存在精确的延迟控制的精度不足的危险。 解决方案:在延迟电路10中,第一延迟单元12包括多个延迟元件作为检测延迟特性的对象。 第二延迟单元14包括用于输出根据第一延迟单元12的延迟特性延迟的信号的多个延迟元件。检测单元16检测在第一延迟单元12中使用的延迟元件的数量,以延迟输入信号 只是预定的参考时间。 选择单元18选择在第二延迟单元14中使用的延迟元件的数量,以根据检测到的延迟元件的数量来延迟输入信号。 在第一延迟单元12和第二延迟单元14中,其中包括的延迟元件的每个延迟值之间的比率等于第二延迟单元14中基准时间与期望延迟时间之间的比率。延迟 包括在第二延迟单元14中的延迟元件的值小于包括在第一延迟单元12中的延迟元件的延迟值。(C)2008,JPO和INPIT