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    • 2. 发明授权
    • Memory access buffer and reordering apparatus using priorities
    • 使用优先级的存储器访问缓冲器和重新排序装置
    • US6145065A
    • 2000-11-07
    • US67899
    • 1998-04-29
    • Satoshi TakahashiHiroyuki YamauchiHironori AkamatsuKeiichi KusumotoToru IwataYutaka TeradaTakashi Hirata
    • Satoshi TakahashiHiroyuki YamauchiHironori AkamatsuKeiichi KusumotoToru IwataYutaka TeradaTakashi Hirata
    • G06F13/16G06F12/02
    • G06F13/1631
    • A current problem is that when a DRAM is to be accessed through a data bus, the DRAM is accessed independently of a bank, a row address, etc., and therefore, is inefficient. To solve this problem, an address bus and a data bus are connected to a main memory part independently of each other, a temporary memory part for holding a plurality of addresses in advance is disposed on the address bus side and holds addresses for every access to the main memory part regardless of transfer of data, thereby pipelining address inputting cycles. Further, for the purpose of an effective operation of the main memory part, using the addresses which are held, the addresses are rearranged in such a manner that addresses with the same row addresses become continuous to each other, or when there are not addresses with the same row addresses, addresses different banks from each other become continuous to each other, and the memory is thereafter accessed. This reduces the number of precharges, shortens a standby period which is necessary for a precharge, and realizes accessing while reducing a wasteful use of time.
    • 目前的问题在于,当通过数据总线访问DRAM时,独立于存储体,行地址等访问DRAM,因此是低效的。 为了解决这个问题,地址总线和数据总线彼此独立地连接到主存储器部分,预先存储多个地址的临时存储器部分设置在地址总线侧,并且保存地址以进行每次访问 主存储部分不管数据传输,从而流水线地址输入周期。 此外,为了主存储器部分的有效操作,使用所保存的地址,地址被重新排列,使得具有相同行地址的地址彼此连续,或者当没有地址与 相同的行地址,彼此不同的存储体彼此变得连续,并且此后访问存储器。 这减少了预充电次数,缩短了预充电所需的待机时间,并实现了访问,同时减少了浪费时间的使用。
    • 5. 发明授权
    • Time counting circuit and counter circuit
    • 计时电路和计数器电路
    • US5828717A
    • 1998-10-27
    • US624960
    • 1996-03-27
    • Keiichi KusumotoShiro DoshoYutaka TeradaAkira Matsuzawa
    • Keiichi KusumotoShiro DoshoYutaka TeradaAkira Matsuzawa
    • G01R29/027G01C21/00
    • G01R29/0273
    • There is provided a time counting circuit for measuring a pulse spacing of a pulse signal with high accuracy and with low power consumption. An inverter ring composed of an odd number of inverters connected in a ring oscillates and one signal transition occurs after another as though seemingly circulating around the inverter ring. Holding circuits connected to respective output terminals of the inverters composing the inverter ring output, on the rising edge of a pulse signal to be measured, signals outputted from the inverters at the same time. The outputted signals are then converted by a signal converting circuit to numeric data. A counter circuit connected to the output terminal of one of the inverters composing the inverter ring counts the number of circulations of signal transition. A time-difference operating circuit corrects the numeric data outputted from the signal converting circuit based on the number of circulations of signal transition outputted from the counter circuit to provide time data, while calculating and outputting the pulse spacing of the pulse signal to be measured.
    • 提供了一种用于以高精度和低功耗测量脉冲信号的脉冲间隔的时间计数电路。 由连接在环上的奇数个反相器组成的逆变器环振荡,并且一个信号转换发生在似乎在逆变器环周围似乎循环。 连接到构成逆变器环的逆变器的各个输出端子的保持电路在待测脉冲信号的上升沿同时输出从逆变器输出的信号。 然后,输出的信号由信号转换电路转换成数字数据。 连接到构成逆变器环的逆变器之一的输出端的计数器电路对信号转换的循环数进行计数。 时差操作电路根据从计数器电路输出的信号转换的循环数来校正从信号转换电路输出的数字数据,以提供时间数据,同时计算并输出要测量的脉冲信号的脉冲间隔。
    • 6. 发明授权
    • Time counting circuit, pulse converting circuit and FM demodulating
circuit
    • 时间计数电路,脉冲转换电路和FM解调电路
    • US5982841A
    • 1999-11-09
    • US747180
    • 1996-11-12
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • G01R29/027H03D3/04H03K9/06H03M1/50G01M3/00
    • G04F10/005G01R29/027H03D3/04H03K9/06
    • Provided is a time counting circuit which can measure the time taken from the rising edge to the falling edge of a pulse signal and the time from the falling edge to the rising edge thereof. The time counting circuit according to the present invention comprises a measuring circuit for measuring the time between either of the rising and falling edges of the pulse signal, and a pulse converting circuit for converting a pulse signal to be measured to a pulse signal having either of the edges in accordance with the rising edge of the pulse signal to be measured and having either of the edges in accordance with the falling edge of the pulse signal to be measured. The time between either of the edges of the pulse signal converted by the pulse converting circuit is measured by the measuring circuit. The time obtained by measurement is the time taken from the rising edge to the falling edge of the pulse signal to be measured or the time taken from the falling edge to the rising edge thereof.
    • 提供了一种时间计数电路,其可以测量从脉冲信号的上升沿到下降沿的时间以及从下降沿到上升沿的时间。 根据本发明的计时电路包括:测量脉冲信号的上升沿和下降沿之间的时间的测量电路;以及脉冲转换电路,用于将要测量的脉冲信号转换成具有 根据要测量的脉冲信号的上升沿的边缘,并根据要测量的脉冲信号的下降沿具有任一边缘。 由脉冲转换电路转换的脉冲信号的任一边之间的时间由测量电路测量。 通过测量获得的时间是从要测量的脉冲信号的上升沿到下降沿或从下降沿到其上升沿的时间所花费的时间。
    • 7. 发明授权
    • Analog memory circuit and method for recording analog signal
    • 模拟记忆电路和记录模拟信号的方法
    • US5717624A
    • 1998-02-10
    • US739867
    • 1996-10-31
    • Keiichi KusumotoKenji MurataYutaka TeradaAkira Matsuzawa
    • Keiichi KusumotoKenji MurataYutaka TeradaAkira Matsuzawa
    • G11C27/02G11C27/00
    • G11C27/026
    • An analog memory circuit of the present invention includes: a recording circuit for recording and holding an input analog signal as a charge and for reading out the analog signal after deterioration of the analog signal caused by leakage of the charge in a holding operation is eliminated; a selecting circuit for controlling an operation of the recording circuit; and a driving circuit for supplying a predetermined constant voltage to the recording circuit, wherein the recording circuit includes: an input/output terminal for inputting and outputting the analog signal; a first capacitor having a first electrode and a second electrode, for recording and holding the analog signal as the charge; and a second capacitor connected between the second electrode of the first capacitor and a reference potential, for holding a charge leaked from the first capacitor, and wherein an amount of charge corresponding to an amount of leaked charge held in the second capacitor is restored to the first capacitor with predetermined timing.
    • 本发明的模拟存储器电路包括:记录电路,用于记录和保持作为电荷的输入模拟信号,并且用于在由保持操作中的电荷泄漏引起的模拟信号劣化后读出模拟信号; 用于控制记录电路的操作的选择电路; 以及用于向所述记录电路提供预定的恒定电压的驱动电路,其中所述记录电路包括:用于输入和输出所述模拟信号的输入/输出端子; 具有第一电极和第二电极的第一电容器,用于记录和保持模拟信号作为电荷; 以及连接在第一电容器的第二电极和参考电位之间的第二电容器,用于保持从第一电容器泄漏的电荷,并且其中对应于保持在第二电容器中的泄漏电荷量的电荷量恢复到 具有预定定时的第一电容器。
    • 8. 发明授权
    • Time counting circuit and pulse signal generating method
    • 时间计数电路和脉冲信号产生方法
    • US5999586A
    • 1999-12-07
    • US795907
    • 1997-03-04
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • G01D3/00
    • G01D3/00
    • There is provided a small-size time counting circuit which measures time with high accuracy and low power consumption. Around a differential inverter ring composed of an odd number of differential inverters of identical structure connected in a ring configuration, signal transition is caused to circulate by oscillation. A first signal group is composed of normal output signals from the odd-numbered differential inverters and inverted output signals from the even-numbered differential inverters, which rise and fall sequentially at equal time intervals corresponding to delay times in the individual differential inverters. A second signal group is composed of inverted output signals from the odd-numbered differential inverters and normal output signals from the even-numbered differential inverters, which similarly rise and fall sequentially at equal time intervals. Accordingly, even when the rise time of an output signal from each of the differential inverters composing the differential inverter ring is different from the fall time thereof, the use of the first and second signal groups provides equal increments of time for time measurement.
    • 提供了一种小型时间计数电路,以高精度和低功耗测量时间。 围绕由具有相同结构的奇数差分逆变器组成的差动逆变器环以环形结构连接,使信号转变通过振荡循环。 第一信号组由来自奇数编号的差分逆变器的正常输出信号和来自偶数编号的差分逆变器的反相输出信号组成,其以与各个差分逆变器中的延迟时间相对应的等时间间隔顺序上升和下降。 第二信号组由来自奇数编号的差分逆变器的反相输出信号和来自偶数编号差动逆变器的正常输出信号组成,其类似地以相等的时间间隔顺序地上升和下降。 因此,即使来自构成差分逆变器环的各差分逆变器的输出信号的上升时间与其下降时间不同,所以使用第一和第二信号组提供相等的时间测量时间。
    • 10. 发明授权
    • Time counting circuit, pulse converting circuit and FM demodulating circuit
    • 时间计数电路,脉冲转换电路和FM解调电路
    • US06172557B2
    • 2001-01-09
    • US09398817
    • 1999-09-20
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • H03D300
    • G04F10/005G01R29/027H03D3/04H03K9/06
    • Provided is a time counting circuit which can measure the time taken from the rising edge to the falling edge of a pulse signal and the time from the falling edge to the rising edge thereof. The time counting circuit according to the present invention comprises a measuring circuit for measuring the time between either of the rising and falling edges of the pulse signal, and a pulse converting circuit for converting a pulse signal to be measured to a pulse signal having either of the edges in accordance with the rising edge of the pulse signal to be measured and having either of the edges in accordance with the falling edge of the pulse signal to be measured. The time between either of the edges of the pulse signal converted by the pulse converting circuit is measured by the measuring circuit. The time obtained by measurement is the time taken from the rising edge to the falling edge of the pulse signal to be measured or the time taken from the falling edge to the rising edge thereof.
    • 提供了一种时间计数电路,其可以测量从脉冲信号的上升沿到下降沿的时间以及从下降沿到上升沿的时间。 根据本发明的计时电路包括:测量脉冲信号的上升沿和下降沿之间的时间的测量电路;以及脉冲转换电路,用于将要测量的脉冲信号转换成具有 根据要测量的脉冲信号的上升沿的边缘,并根据要测量的脉冲信号的下降沿具有任一边缘。 由脉冲转换电路转换的脉冲信号的任一边之间的时间由测量电路测量。 通过测量获得的时间是从要测量的脉冲信号的上升沿到下降沿或从下降沿到其上升沿的时间所花费的时间。