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    • 42. 发明申请
    • Dynamic gain compensation and calibration
    • 动态增益补偿和校准
    • US20050248389A1
    • 2005-11-10
    • US10840724
    • 2004-05-05
    • Huy Nguyen
    • Huy Nguyen
    • H03F1/30H03G3/20H03G3/30G05F1/10
    • H03F3/45183H03F3/45632H03F2203/45048H03F2203/45484
    • Described are methods and circuits that reduce or eliminate the impact of power-supply fluctuations on circuit performance. IC dies include compensation circuitry that compares local power-supply voltages to relatively stable reference voltages, such as unloaded distributed supply voltages, to sense local supply-voltage fluctuations. Based upon this comparison, the compensation circuitry adjusts circuit characteristics that might otherwise suffer performance degradation. Receivers in accordance with some embodiments automatically tailoring their gain to the output characteristics of a number of possible transmitter types with which the receivers may be expected to communicate.
    • 描述了减少或消除电源波动对电路性能的影响的方法和电路。 IC芯片包括补偿电路,其将局部电源电压与相对稳定的参考电压(例如无负载分布式电源电压)进行比较,以感测局部电源电压波动。 基于这种比较,补偿电路调整可能会遭受性能下降的电路特性。 根据一些实施例的接收机自动地将其增益调整到接收机可以预期与之通信的多个可能的发射机类型的输出特性。
    • 43. 发明授权
    • Enclosure system for a portable electronic device
    • 便携式电子设备的外壳系统
    • US06819552B1
    • 2004-11-16
    • US10217761
    • 2002-08-12
    • Lawrence LamHuy Nguyen
    • Lawrence LamHuy Nguyen
    • H05K500
    • G06F1/1626G06F2200/1633
    • A mechanism for protecting a portable electronic device, e.g., a handheld computer system. In one embodiment, the present invention is comprised of an encasing structure having an opening and configured to receive and have disposed therewithin the handheld computer system. The present invention is further comprised of a lifting device coupled to the encasing structure. The lifting device is adapted to raise the handheld computer system above the confines of the encasing structure and further adapted to lower the handheld computer system to a disposition therewithin the encasing structure. The encasing structure can be used to protect input/output ports or slots, I/Os externally disposed on side surfaces of the handheld computer system when the handheld computer system is disposed within the encasing structure, and the lifting device enables raising the handheld computer system above the confines of the encasing structure to provide access to the I/Os. In one embodiment, a push-push hinge can be utilized as the lifting device.
    • 一种用于保护便携式电子设备(例如手持式计算机系统)的机构。 在一个实施例中,本发明包括具有开口并被配置为容纳并且设置在手持计算机系统中的封装结构。 本发明还包括联接到包装结构的提升装置。 提升装置适于将手持计算机系统升高到包围结构的限制之上,并且还适于将手持式计算机系统降低到其中的包围结构中的配置。 当手持式计算机系统设置在封装结构内时,封装结构可用于保护输入/输出端口或插槽,外部设置在手持计算机系统的侧表面上的I / O,并且提升装置能够提升手持式计算机系统 高于封装结构的限制,以提供对I / O的访问。 在一个实施例中,可以使用推 - 推铰链作为提升装置。
    • 44. 发明授权
    • Integrated keypad interface for a personal digital assistant device
    • 用于个人数字助理设备的集成键盘接口
    • US06747224B1
    • 2004-06-08
    • US09819593
    • 2001-03-27
    • Kenneth JenksTroy HulickHuy NguyenSteven Shiozaki
    • Kenneth JenksTroy HulickHuy NguyenSteven Shiozaki
    • H01H1904
    • G06F1/1698G06F1/1626G06F1/1656G06F1/1662G06F2200/1632H01H13/70H01H2207/022H01H2207/048H01H2209/002H01H2221/056H01H2223/003
    • One embodiment in accordance with the present invention includes a “plug-in” button module for a personal digital assistant (PDA). Specifically, the “plug-in” button module includes a button frame module having a membrane layer (e.g., thermo-plastic urethane or thermo-plastic elastomer) molded over it. The plug-in module can be snapped into the PDA over its button array. In this manner, the plug-in button module provides a seal for the buttons of the PDA that restricts dirt, grim, and other foreign particles from getting underneath them. Furthermore, since the plug-in button module is modular, it can be manufactured separately from the rest of the PDA in a wide variety of ways. For example, the membrane layer of the plug-in button module can be fabricated with different shapes, colors, hardnesses, decorations, textures, and opacities. In this manner, a user is able to personalize their PDA by snapping in a particular plug-in button module.
    • 根据本发明的一个实施例包括用于个人数字助理(PDA)的“插件”按钮模块。 具体来说,“插件”按钮模块包括具有模制在其上的膜层(例如,热塑性聚氨酯或热塑性弹性体)的按钮框架模块。 插件模块可以通过其按钮阵列卡入PDA。 以这种方式,插件按钮模块为PDA的按钮提供了一种密封,其限制了污垢,严酷和其他外来颗粒不在其下面。 此外,由于插件按钮模块是模块化的,所以可以以多种方式与PDA的其余部分分开制造。 例如,插件按钮模块的膜层可以制造成具有不同的形状,颜色,硬度,装饰,纹理和不透明度。 以这种方式,用户能够通过在特定的插件按钮模块中捕捉来个性化他们的PDA。
    • 45. 发明授权
    • SRAM synchronized with an optimized clock signal based on a delay and an external clock
    • SRAM与基于延迟和外部时钟的优化时钟信号同步
    • US06272067B1
    • 2001-08-07
    • US09613927
    • 2000-07-11
    • Bruce C. SunEric W. LeeHuy Nguyen
    • Bruce C. SunEric W. LeeHuy Nguyen
    • G11C800
    • G11C7/106G11C7/1012G11C7/1051G11C7/1066G11C7/1072G11C7/1078G11C7/1087G11C7/222G11C11/419
    • A synchronous SRAM chip that can increase the number of times it may be accessed within a single clock cycle. By knowing the processor's clock speed and determining a critical time, a signal optimizer may be constructed. The critical time is the longest interval of time required for a worst-case scenario memory access. A signal optimizer transforms the clock signal into a signal that has a higher frequency than the original clock signal and maintains both its high state and its low state for at least the critical time. By then allowing the synchronous SRAM chip to perform its access and pre-charge during the dips and posts of the optimized clock signal, the synchronous SRAM chip can perform multiple accesses and pre-charges during one clock cycle. The SRAM chip can be used for direct memory accesses such that the processor does not need to arbitrate access to the memory.
    • 同步SRAM芯片可以增加在单个时钟周期内访问的次数。 通过了解处理器的时钟速度并确定关键时间,可以构建信号优化器。 关键时间是最坏情况下存储器访问所需的最长时间间隔。 信号优化器将时钟信号变换成具有比原始时钟信号更高的频率的信号,并且至少在关键时刻保持其高状态和低状态。 在允许同步SRAM芯片在优化的时钟信号的下降和下降期间执行其访问和预充电,同步SRAM芯片可以在一个时钟周期内执行多次访问和预充电。 SRAM芯片可用于直接存储器访问,使得处理器不需要仲裁访问存储器。