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    • 82. 发明授权
    • Multistate prom and decompressor
    • 多状态和解压缩器
    • US5572462A
    • 1996-11-05
    • US510259
    • 1995-08-02
    • Peter W. Lee
    • Peter W. Lee
    • G11C11/56
    • G11C11/5692G11C11/56G11C7/1006
    • A multistate PROM and decompressor comprises a PROM array including a plurality of cells arranged to have a plurality of wordlines and a plurality of bitlines, where each cell is configured to have one of a plurality of threshold voltages (Vt0-Vtn). A Vt-detector is coupled to the PROM array and configured to receive a high voltage wordline (WLHV) signal that is ramped from a first voltage (e.g. 0V or ground) to a second voltage (e.g. Vtmax). The Vt-detector is configured to compare the WLHV signal to a plurality of predetermined thresholds and to output a detector word in response to the WLHV signal. An addressed memory cell is selected by a wordline select signal and a bitline select signal. A wordline selector is coupled to the PROM array and configured to receive the WLHV signal. The wordline selector communicates the WLHV signal to a selected wordline in response to the wordline select signal. A bitline selector is coupled to the PROM array and configured to select a selected bitline carrying a bitline signal in response to the bitline select signal. A decompressor is coupled to the Vt-detector and the bitline selector and is configured to receive the detector word and the bitline signal. When the WLHV signal voltage meets the addressed cell's voltage threshold, the addressed memory cell is turned on and the selected bitline signal is activated. Then, the detector word is latched into the decompressor and the data stored in the addressed memory cell is delivered to an output terminal. The first embodiment can be combined with a pump generator. A pump generator delivers a relatively high voltage to the WLHV signal input in order to permit a greater expanse among the operational voltage or current levels. This feature increases the range over which the selectable voltages operate. An advantage of this approach is that there is a greater chance of correct interpretation by the Vt-detector and decompressor.
    • 多状态PROM和解压缩器包括PROM阵列,其包括被布置为具有多个字线和多个位线的多个单元,其中每个单元被配置为具有多个阈值电压(Vt0-Vtn)中的一个。 Vt检测器耦合到PROM阵列并且被配置为接收从第一电压(例如0V或接地)斜坡到第二电压(例如Vtmax)的高电压字线(WLHV)信号。 Vt检测器被配置为将WLHV信号与多个预定阈值进行比较,并且响应于WLHV信号输出检测器字。 寻址的存储单元由字线选择信号和位线选择信号选择。 字线选择器耦合到PROM阵列并被配置为接收WLHV信号。 字线选择器响应于字线选择信号将WLHV信号传送到所选择的字线。 位线选择器耦合到PROM阵列并且被配置为响应于位线选择信号来选择携带位线信号的选定位线。 解压缩器耦合到Vt检测器和位线选择器,并被配置为接收检测器字和位线信号。 当WLHV信号电压满足寻址单元的电压阈值时,寻址的存储单元导通,并且所选择的位线信号被激活。 然后,检测器字被锁存到解压缩器中,并且存储在寻址的存储单元中的数据被传送到输出端。 第一实施例可以与泵发生器组合。 泵发生器向WLHV信号输入端提供相对高的电压,以便允许在工作电压或电流水平之间更大的扩展。 该功能增加了可选电压工作的范围。 这种方法的一个优点是Vt检测器和解压缩器有更正确的解释机会。
    • 86. 发明授权
    • Combination nonvolatile integrated memory system using a universal technology most suitable for high-density, high-flexibility and high-security sim-card, smart-card and e-passport applications
    • 组合非易失性集成存储系统采用通用技术,最适合高密度,高灵活性和高安全性的SIM卡,智能卡和电子护照应用
    • US07177190B2
    • 2007-02-13
    • US11025822
    • 2004-12-24
    • Peter W. Lee
    • Peter W. Lee
    • G11C11/34
    • G11C16/04
    • A combination EEPROM, NOR-type Flash and NAND-type Flash nonvolatile memory contains memory cells in which a floating gate transistor forms a NAND-type Flash nonvolatile memory cell, forms a NOR-type Flash nonvolatile memory cells and with one or two select transistors forms a two and three transistor EEPROM cell. The nonvolatile memory cells use a large positive programming voltage (+18V) applied to the word lines or select gating lines for programming the memory cells and a large negative erasing voltage (−18V) applied to the word lines or select gating lines for erasing the memory cells. The NOR-type Flash nonvolatile memory array is used to store code of embedded processor programs or application programs for smart cards. The EEPROM array is preferably used to store byte alterable data and NAND-type Flash nonvolatile memory array is used to store personalized biometric data such as Iris, DNA, facial picture and finger prints.
    • 组合EEPROM,NOR型闪存和NAND型闪存非易失性存储器包含存储单元,其中浮置晶体管形成NAND型闪存非易失性存储单元,形成NOR型闪存非易失性存储单元以及一个或两个选择晶体管 形成两个和三个晶体管EEPROM单元。 非易失性存储单元使用施加到字线的大的正编程电压(+ 18V)或选择用于编程存储器单元的选通线和施加到字线的大的负擦除电压(-18V)或选择用于擦除的行的选通线 记忆细胞 NOR型闪存非易失性存储器阵列用于存储智能卡的嵌入式处理器程序或应用程序的代码。 EEPROM阵列优选用于存储字节可变数据,并且NAND型闪存非易失性存储器阵列用于存储诸如虹膜,DNA,面部图像和指纹之类的个性化生物特征数据。
    • 89. 发明授权
    • Low voltage, low current hot-hole injection erase and hot-electron
programmable flash memory with enhanced endurance
    • 低电压,低电流热孔注入擦除和热电子可编程闪存,具有更强的耐用性
    • US5953255A
    • 1999-09-14
    • US998418
    • 1997-12-24
    • Peter W. Lee
    • Peter W. Lee
    • G11C11/56G11C16/10G11C16/16G11C11/40
    • G11C16/16G11C11/5628G11C11/5635G11C16/10G11C2211/565
    • An array of MOS memory cells having functionally symmetrical drain and source regions may be programmed and/or erased using low voltage, e.g., less than about 7V. In a NAND-type array, UV-erasure increases threshold voltage Vt to erase memory cell contents, and low voltage-low current hot-hole injection ("HHI") decreases Vt to program the memory cells. For NOR-type arrays, HHI decreases Vt to erase memory cell contents and channel-hot-electron ("CHE") injection increases Vt to program cell contents. Erase and program potentials are low (
    • 具有功能对称的漏极和源极区域的MOS存储器单元的阵列可以使用低电压(例如小于约7V)被编程和/或擦除。 在NAND型阵列中,UV擦除增加阈值电压Vt以擦除存储单元内容,而低电压 - 低电流热空穴注入(“HHI”)减小Vt以对存储单元进行编程。 对于NOR型阵列,HHI减小Vt以擦除存储单元内容,并且通道热电子(“CHE”)注入增加Vt以编程单元内容。 擦除和编程电位低(<7V),使得阵列可以在具有低压电路的公共IC上轻松制造。 由于HHI强烈收敛Vt,存储单元可能存储两个以上的数据值,这增加了单元存储密度。 电池对称性允许在电池耐久性变得太麻烦之前交换源的漏极,这种交换可以显着增加阵列的耐久寿命。 阵列可用作闪速存储器,如EPROM替换,或作为一次可编程存储器。
    • 90. 发明授权
    • Electrical drive circuit for a variable-speed switched reluctance motor
    • 用于变速开关磁阻电机的电驱动电路
    • US4731570A
    • 1988-03-15
    • US943213
    • 1986-09-08
    • Peter W. Lee
    • Peter W. Lee
    • H02P25/08H02P8/00
    • H02P25/0925
    • An electrical drive circuit for a variable-speed switched reluctance motor having a bifilar winding is provided. First, second, and third thyristor switches (5,7,10) each having respective firing circuits (6,8,11) are associated with the motor. A commutation capacitor device (9) is associated with one of the thyristor switches (5,7,10). A sensing means (33) determines the direction of current flow through the commutation capacitor device (9), and a control system (20) prevents the first and third thyristor switches (5,10) from conducting when the second thyristor switch (7) is conducting and prevents the first and second thyristor switches (5,7) from conducting when the third thyristor switch (10) is conducting.
    • PCT No.PCT / US86 / 01846 Sec。 371日期1986年9月8日第 102(e)1986年9月8日PCT PCT。1986年9月8日PCT公布。 出版物WO87 / 01530 日期为1987年3月12日。提供具有双线绕组的变速开关磁阻电动机的电驱动电路。 每个具有各自的点火电路(6,8,11)的第一,第二和第三晶闸管开关(5,7,10)与电动机相关联。 换向电容器装置(9)与晶闸管开关(5,7,10)中的一个相关联。 感测装置(33)确定通过换向电容器装置(9)的电流的方向,并且当第二晶闸管开关(7)被控制时,控制系统(20)防止第一和第三晶闸管开关(5,10)导通, 正在导通并且防止当第三晶闸管开关(10)导通时第一和第二晶闸管开关(5,7)导通。